- Discuss - lists.centos.org

halt versus shutdown
by Leon Fauster 15 Jun '20

15 Jun '20

Working with different OSs can be quite challenging (mentally :-)). I wonder why the command "halt" has not same result between EL6 and EL8. To shutdown the vm or workstation in EL8 i must use "shutdown now". Who mandates this behavior in terms of configuration file? -- Leon

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Modifying username
by Jay Hart 15 Jun '20

15 Jun '20

I modified a users name on my system. From ABCLast, to ALast (used as an example). I modified the username, then the group name of the user (to align with the new name), and then I moved the users home directory from /home/ABCLast, to /home/ALast. Then using vipw, edited the home directory to use /home/ALast. When I got finished editing the passwd file, I got the following message: You have modified /etc/passwd. You may need to modify /etc/shadow for consistency. I don't know what to do here. Need some guidance please. lastly, did I miss anything here? Any other steps I need to do to get this user squared away due to the name change? Thanks, Jay

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pppoe
by Joe 12 Jun '20

12 Jun '20

Hello, CentOS 8 dropped the rp-pppoe package. My attempts with NetworkManager-ppp already failed because it seems that it is not possible to use a VLAN as a device. Please, how does it work under C8 to set up a pppoe connection (German Telekom, VDSL (VLAN 7 required), ZTE modem). Thanks. Joe

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Minicom and Ncurses
by Nicolas Kovacs 12 Jun '20

12 Jun '20

Hi, I have to do some maintenance on a CentOS 7 proxy installed on a routerboard without a video card. The only way to access this machine directly is via Minicom and serial port. I'm using NetworkManager TUI (nmtui) to configure network interfaces, but Ncurses rendering in Minicom works in the sense that chickens fly and horses swim. What you get is a forest of question marks with a few barely recognizable options lost in between. Is there some magical trick to render Ncurses interfaces correctly in Minicom ? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12

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CentOS-announce Digest, Vol 184, Issue 5
by centos-announce-request＠centos.org 12 Jun '20

12 Jun '20

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2020:2530 Important CentOS 7 tomcat Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Thu, 11 Jun 2020 21:13:08 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2530 Important CentOS 7 tomcat Security Update Message-ID: <20200611211308.GA14121(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2530 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2530 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 1a682ecdfdca8179b910e4ad1364c7ea7af6484572fa4c0bf786d78a32b2352f tomcat-7.0.76-12.el7_8.noarch.rpm 3fbf1ba29d42285e346eea1daf56195b30a3e94182dc36be98483cd12cbd21cc tomcat-admin-webapps-7.0.76-12.el7_8.noarch.rpm 0e0d2a192959f0e924276b1a404f1696e4c8f489e745d0f759efae4b2e712533 tomcat-docs-webapp-7.0.76-12.el7_8.noarch.rpm 150fbb8d578feb9baac913edd690284b9723f51a4ef734cb834bd87b19eb6110 tomcat-el-2.2-api-7.0.76-12.el7_8.noarch.rpm 919467bef774bb63bf51ec63c3758c1b0a98fed3d3ba41eaf9da630bc7e7932a tomcat-javadoc-7.0.76-12.el7_8.noarch.rpm 4119baf0bb201bf72b2e037b2df5af8a2f03d88341a41e6af7310429daded8f4 tomcat-jsp-2.2-api-7.0.76-12.el7_8.noarch.rpm 1c864d58ea8b2a77959443e02fd45cd9424414ac02881ae7db8fb1f7abee126c tomcat-jsvc-7.0.76-12.el7_8.noarch.rpm 6d203bb8a91bda83c4ec3973e3bc72f428675e7c3a0f33363e535c92f56c5395 tomcat-lib-7.0.76-12.el7_8.noarch.rpm b02d127bdaef8b0e305453b6bdf3479008875b1f574b172429d5ead159591733 tomcat-servlet-3.0-api-7.0.76-12.el7_8.noarch.rpm d307e0fd8ecc96b206c97fe1e7003080cfc6a4d5f90d73a4aecbafd14f48c023 tomcat-webapps-7.0.76-12.el7_8.noarch.rpm Source: d18613ee3eff59b1223761f5843b528d137200f7ee6e7d66e4dde770fb164115 tomcat-7.0.76-12.el7_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 184, Issue 5 ***********************************************

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CentOS-announce Digest, Vol 184, Issue 4
by centos-announce-request＠centos.org 11 Jun '20

11 Jun '20

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2020:2433 Moderate CentOS 6 microcode_ctl Security Update (Johnny Hughes) 2. CESA-2020:2430 Moderate CentOS 6 kernel Security Update (Johnny Hughes) 3. CESA-2020:2432 Moderate CentOS 7 microcode_ctl Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 10 Jun 2020 17:17:14 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2433 Moderate CentOS 6 microcode_ctl Security Update Message-ID: <20200610171714.GA3446(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2433 Moderate Upstream details at : https://access.redhat.com/errata/RHSA-2020:2433 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: bc2910c9f73fe13f75c2921410c368230698ad20c41c6bc8f2b077e875bc5ecb microcode_ctl-1.17-33.26.el6_10.i686.rpm x86_64: d61387797006fdb5af23de80a5751ff3769dbdbb53d89839809dc98359b58125 microcode_ctl-1.17-33.26.el6_10.x86_64.rpm Source: 29a7a32919a8d60ce03d01075170f32614032b89bd9bf8b3e46b76525018c082 microcode_ctl-1.17-33.26.el6_10.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Wed, 10 Jun 2020 17:19:46 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2430 Moderate CentOS 6 kernel Security Update Message-ID: <20200610171946.GA3787(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2430 Moderate Upstream details at : https://access.redhat.com/errata/RHSA-2020:2430 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 11bf519a323e41b66b238dc14e924b0b5d3b6d637dc4d8f5e866a566545ea7f0 kernel-2.6.32-754.30.2.el6.i686.rpm 2502bbcf915834aae1634c2ece36bafb9a3348fef2b9232e147477d81874c853 kernel-abi-whitelists-2.6.32-754.30.2.el6.noarch.rpm 15f96d91bfc8fe4a00f5ec978233cbc05167bfe7734ec2c1b6ed071e68566406 kernel-debug-2.6.32-754.30.2.el6.i686.rpm e7e5ffa9c22ed9d43fcf4e98e08dafdd1be3a308824a60103843540a0b1456d5 kernel-debug-devel-2.6.32-754.30.2.el6.i686.rpm 4fff97920b1df19e4b2ae0af5e2a3f0cfca8853858e7c892bfbfe112507cb6b6 kernel-devel-2.6.32-754.30.2.el6.i686.rpm 921d611a19b98c2f04f9981edf3324b27b869f8a1d327adb60061ff71a912aaf kernel-doc-2.6.32-754.30.2.el6.noarch.rpm bf7722b27bd32467a52cf669295c683070fba5151ee297a33f7718dd7dd16107 kernel-firmware-2.6.32-754.30.2.el6.noarch.rpm a29ac2d4a39828bc7c5a18c9f728b0695b35d33ffb11c3dbcd8dc2b0f4621f21 kernel-headers-2.6.32-754.30.2.el6.i686.rpm 86a91237241b6d70a7ef40118609a192095ebc6867b6dde631eb935f6301d794 perf-2.6.32-754.30.2.el6.i686.rpm 54ab43ad2015f540fa658ea87ef5c7b7e24d411150aa1d58398be71af04d8c6e python-perf-2.6.32-754.30.2.el6.i686.rpm x86_64: 921bf8f31a14a20b2ae2c729af200cac547e18d5459bdf68c2fd13e76c08f83e kernel-2.6.32-754.30.2.el6.x86_64.rpm 2502bbcf915834aae1634c2ece36bafb9a3348fef2b9232e147477d81874c853 kernel-abi-whitelists-2.6.32-754.30.2.el6.noarch.rpm 2c3fe628af77d70d17d4df1f409e693dad07100ae1394473258422a785403cc4 kernel-debug-2.6.32-754.30.2.el6.x86_64.rpm e7e5ffa9c22ed9d43fcf4e98e08dafdd1be3a308824a60103843540a0b1456d5 kernel-debug-devel-2.6.32-754.30.2.el6.i686.rpm 403bc658ff35b9fafb243d94d6cf6fa028b2530b2c31164e776f4b1a95995679 kernel-debug-devel-2.6.32-754.30.2.el6.x86_64.rpm 22d0199606b0ffa91d4981ffeafe3bf14eddb4176ebd1afe76e01e2dac46806f kernel-devel-2.6.32-754.30.2.el6.x86_64.rpm 921d611a19b98c2f04f9981edf3324b27b869f8a1d327adb60061ff71a912aaf kernel-doc-2.6.32-754.30.2.el6.noarch.rpm bf7722b27bd32467a52cf669295c683070fba5151ee297a33f7718dd7dd16107 kernel-firmware-2.6.32-754.30.2.el6.noarch.rpm 59b69f6865b2598236fd7f1062321e8cfba8562f8f6f03533a88a0d1234d6543 kernel-headers-2.6.32-754.30.2.el6.x86_64.rpm fe5f89cc7d77d68ded0aea3d056408e5405b90b1ecaea31e174ad600e17ff7e0 perf-2.6.32-754.30.2.el6.x86_64.rpm 5439d7ca2bbf1686b75f1209436985aaee824e9c188359f5e5dae1c1b10183dd python-perf-2.6.32-754.30.2.el6.x86_64.rpm Source: b23d189769ca45756cbf8dac9fdfd11b507414a2c64f5e8973fd8540aa2ba211 kernel-2.6.32-754.30.2.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 3 Date: Wed, 10 Jun 2020 17:22:53 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2432 Moderate CentOS 7 microcode_ctl Security Update Message-ID: <20200610172253.GA4100(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2432 Moderate Upstream details at : https://access.redhat.com/errata/RHSA-2020:2432 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: e60f84fe58d8f960f14241fc1c21ad0053213bad8ba294fc3c5f727d37076e4c microcode_ctl-2.1-61.6.el7_8.x86_64.rpm Source: 42a0ea626d8554d7d25af8a383010f11fd791f7689f8943c7b97646db5550acc microcode_ctl-2.1-61.6.el7_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 184, Issue 4 ***********************************************

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virt-manager guest and sound
by Jerry Geis 10 Jun '20

10 Jun '20

I am running C7 host and pulse audio. I have a Win 10 guest with ICH9 audio. It works - but I hear artifacts. Anything to do to help audio be flawless under guest VM ? Currently I was just on youtube and playing a song. nothing special. Plenty of resources on the host. The guest has 8G ram and 8 CPU. Thanks Jerry

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In CentOS 8 new install, old /home, .desktop opens in gedit
by Lamar Owen 10 Jun '20

10 Jun '20

Ok, hoping someone has seen this or at least knows where to look. I have been waiting around a bit to upgrade my system to CentOS 8, and actually wanted to wait on 8.2, but had an opportunity this week to actually do the work, so took the opportunity. Here was my process: 1.) Installed CentOS 8.1.1911 on a spare mSATA SSD in my spare M6700 laptop. Installed the RPMfusion nVidia drivers, the PowerTools repo, set up the extensions for Places, Applications, etc, and got it prepped to accept my /home disk. 2.) After complete backups, physically moved my /home disk from the CentOS 7 M6700 to the CentOS 8 M6700. /home is on a LUKS LVM lv; got all the mount options and encryption options setup to start on boot. All of that now works, even though it took a bit of wrangling (if the filesystem mount is set to start up at boot without the nofail option BUT the encryption option is left at the User Default setting, it will not work!). Did a complete SELinux relabel (touch /.autorelabel and reboot). Moved the default GNOME config dirs over to the old /home; don't want a lot of cruft left over from the C7 install (which has been upgraded over the years from C6, Fedora 14, and earlier, and it was time to get rid of some cruft, I'm sure). After booting back up with the old /home in place, verified the GNOME extensions settings I had set up after the new install. All looks good, and working like it's supposed to so far. 3.) Moved over the Win10 and Win7 virtual machines, all of that works fine. 4.) Started installing my everyday programs, beginning with Harrison Mixbus. The program put its menu entry in place; all good. However, when I go to double click on the .desktop shortcut, it opens in gedit. Hmm, this ain't quite right. This worked fine on C7 in GNOME Standard mode. So, at this point, the Mixbus_6.0.702.desktop file is on my desktop, it's in ~/Desktop with executable permissions and is owned by the correct user, but right-clicking on it does not bring up the choice to 'Allow Launching.' The GNOME Extension 'Desktop Icons' is installed and is active. I've tried a whole lot of suggestions, but wanted to see if anyone here had seen this before and has solved the problem to allow launching of the .desktop file as it is supposed to do. Just knowing that 'it works for you' actually is helpful, especially if we can figure out what is different from my install to yours (SELinux context, permissions, etc). Just knowing where to look would be helpful; and I'm going to diff my old GNOME config from my /home backup to the fresh as-installed config.... gnome-shell-extension-desktop-icons-3.32.1-10.el8.noarch is installed.

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CentOS-announce Digest, Vol 184, Issue 3
by centos-announce-request＠centos.org 10 Jun '20

10 Jun '20

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2020:2414 Important CentOS 7 unbound Security Update (Johnny Hughes) 2. CESA-2020:2414 Important CentOS 7 unbound Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 9 Jun 2020 15:58:30 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2414 Important CentOS 7 unbound Security Update Message-ID: <20200609155830.GA14423(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2414 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2414 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) Source: 23ffc6fc5c3340e4e55cb79b8da3f80361bd4adcac8215c0cf561dd83738560a unbound-1.6.6-4.el7_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Tue, 9 Jun 2020 17:13:01 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2414 Important CentOS 7 unbound Security Update Message-ID: <20200609171301.GA16717(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2414 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2414 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: d7c7de939c7a3dbec81adf688ae2557ca2fc3f18498eb9c09b8896d3b73dd071 unbound-1.6.6-4.el7_8.x86_64.rpm d253cd8566f10e05e7bbaba91b8985b224760bd9bc95d7be1236a61a2a300846 unbound-devel-1.6.6-4.el7_8.i686.rpm e08699d98dc4bdc6e3b0420111f4c7a54fd21233dfe55c8b0a966c770023e54f unbound-devel-1.6.6-4.el7_8.x86_64.rpm 75c67d364ea5de70c161e35d62955896b31edafb1314e1338b5ff4d265ec23e4 unbound-libs-1.6.6-4.el7_8.i686.rpm 84862fc5e25c9431d1c50a088469c311a471ecf1f475906b2758ccb65ffe2f20 unbound-libs-1.6.6-4.el7_8.x86_64.rpm da25fe4519d413260c142ca775e23133ce865ed79ceeb4e60448c1fea9b1ecd0 unbound-python-1.6.6-4.el7_8.x86_64.rpm Source: 23ffc6fc5c3340e4e55cb79b8da3f80361bd4adcac8215c0cf561dd83738560a unbound-1.6.6-4.el7_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 184, Issue 3 ***********************************************

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C8 install problems
by ejm 10 Jun '20

10 Jun '20

Hi all, I am trying to install C8 from a DVD I made onto a 1Tb disc partitioned into 2 ext4 partitions. The first partition contains C7 which I installed via a DVD. Trying to install C8 yields an error indicating the file /dev/root is missing. I've checked the SHA256 sum for the ISO for CentOS 8.1 1911 and it checks out fine. I've burned a couple of different DVDs and get the same error about /dev/root missing from both. I burned both DVDs using the PC app PowerISO. Is that potentially a problem ? Looking at the log file of the C8 install I see before the message about /dev/root, that the file /etc/iscsi/initiatorname.iscsi is missing --and /sbin/modprobe -bv sg failed w/ exit code 1 I am doing the install with the target 1Tb disc attached, via a USB cable from a SATA docking station, to a ASUS PC running Windows 7. I boot up via the DVD just fine on the PC, but I've not been able to get past the errors from iSCSI and /dev/root. I do see a message at the very beginning of the install that the hardware family 12h is "not supported upstream". I'm not sure if that message is important, or a red herring. Is it possible that the Orico SATA docking station (model 6619) has been dropped in C8 ? Any tips or suggestions would be greatly appreciated. Thanks, --Ed

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yum/dnf diff
by Kenneth Porter 10 Jun '20

10 Jun '20

I'm used to using "git diff" and "svn diff" to view changes in my development system. Is there a similar thing that works with changes between a repository package and the installed RPM? Ie. something that shows the changes in /etc hinted at by "rpm -V". I'm already using etckeeper+git but that would combine changes from updates with my own modifications. The only thing I've found so far is a rather manual procedure: <https://serverfault.com/questions/378439/getting-diffs-for-file-changes-det…>

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Disabling fips mode in Centos 7.6
by Akshar Kanak 10 Jun '20

10 Jun '20

Dear team if i need to disable FIPS on Centos 7.6 , then setting fips=0 in kernel parameter should be more then sufficient . Why should we remove the dracut-fips package and regenerate the initramfs? Thanks and regards Akshar

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Switching between keyboards in CentOS 7 using the MATE desktop
by H 09 Jun '20

09 Jun '20

I switch between three keyboards, two western ones and Chinese Pinyin entry. I have fcitx installed to switch between Pinyin and standard entry and use the keyboard switching in MATE to switch between keyboards. While I originally believed there was a bug in fcitx since switching between entry fields in firefox, chromium and thunderbird using the non-default keyboard always switched me back to the default keyboard, this even when hitting ENTER in a Chromium entryfield, I now believe the problem might lie in MATE or CentOS. There is no problem remembering whether a particular program is configured by me to use Pinyin input or not so that seems to work fine. Can anyone else confirm this issue? Might it be a configuration issue on my end? By the way, I use CTRL-SHIFT+RIGHT-SHIFT to switch between keyboards.

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firewalld / iptables / nftables
by Leon Fauster 09 Jun '20

09 Jun '20

Despite that the migration of our applications comes with a significant workload. It seems that also every aspect of common services had changed with EL8. In EL8 firewalld uses nftables as backend. I wonder why iptables does not list any rules while also configured to use nftables as backend. # iptables -V iptables v1.8.2 (nf_tables) # firewall-cmd --list-all |egrep -o '22|ssh' ssh # nft list ruleset | egrep -o '22|ssh' ssh # iptables -L -n | egrep -o '22|ssh' <EMPTY> Any hints? -- Leon

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Trying to get bride network on CentOS 7 working with virt-manager
by Jerry Geis 09 Jun '20

09 Jun '20

I have these interfaces listed. eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.8 netmask 255.255.252.0 broadcast 192.168.3.255 inet6 fe80::e2d5:5eff:fe63:abe5 prefixlen 64 scopeid 0x20<link> ether e0:d5:5e:63:ab:e5 txqueuelen 1000 (Ethernet) RX packets 42411243 bytes 4701898681 (4.3 GiB) RX errors 0 dropped 156 overruns 0 frame 0 TX packets 78372982 bytes 34946337897 (32.5 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 16 memory 0x92f00000-92f20000 virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255 ether 52:54:00:fc:34:af txqueuelen 1000 (Ethernet) RX packets 132792 bytes 337411780 (321.7 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 138593 bytes 742263806 (707.8 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 virbr1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 192.168.100.1 netmask 255.255.255.0 broadcast 192.168.100.255 ether 52:54:00:9c:39:02 txqueuelen 1000 (Ethernet) RX packets 206217 bytes 132308800 (126.1 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 105448 bytes 197008661 (187.8 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 virbr0-nic: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether 52:54:00:fc:34:af txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 When I bring up virt-manager, got settings for my VM, and for "Network Source" I select "Specify Shared Device Name" and I have tried the virbr0 and clicked apply and boot the machine. I get networking but not bridged networking - not a 192.168.1.X address. Is there something I missed ? Thanks, Jerry

2 2

Postfix restrictions
by Nicolas Kovacs 09 Jun '20

09 Jun '20

Hi, I'm currently fine-tuning my mail server (Postfix and Dovecot on CentOS 7). SPF, DKIM and DMARC work fine, now I'd like to limit the spam tsunami. Besides the official Postfix documentation, I've read a few articles about Postfix spam restrictions, namely these : https://www.linuxbabe.com/mail-server/block-email-spam-postfix https://wiki.centos.org/HowTos/postfix_restrictions After some experimenting, here's what I currently have on my test server: --8<----- /etc/postfix/main.cf ----------------------------- ... smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, check_helo_access hash:/etc/postfix/helo_access reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_unknown_helo_hostname smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated, check_sender_access hash:/etc/postfix/sender_access, reject_unknown_sender_domain, reject_unknown_reverse_client_hostname, reject_unknown_client_hostname smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, check_client_access hash:/etc/postfix/rbl_override, reject_rhsbl_helo dbl.spamhaus.org, reject_rhsbl_reverse_client dbl.spamhaus.org, reject_rhsbl_sender dbl.spamhaus.org, reject_rbl_client zen.spamhaus.org --8<-------------------------------------------------------- Before committing this configuration to my main server, I thought I'd share this configuration on the list. Maybe the Postfix gurus among you have the odd comment to make. My aim is simply to eliminate as much spam as possible (that is, before adding SpamAssassin) while keeping false positives to a minimum. Any suggestions ? Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12

6 6

EPEL repository: Failure to download metadata
by Jay Hart 08 Jun '20

08 Jun '20

Trying to install certbot, for Lets Encrypt certificate installation. How do I fix the below repo issue? I have not been successful tracking down this issue using google. [root@dream postfix]# yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm CentOS-8 - AppStream 0.0 B/s | 0 B 00:10 Failed to download metadata for repo 'AppStream' Error: Failed to download metadata for repo 'AppStream' [root@dream postfix]# ^C [root@dream postfix]# ls /etc/yum.repos.d/ CentOS-AppStream.repo CentOS-CR.repo CentOS-Extras.repo CentOS-Media.repo CentOS-Vault.repo CentOS-Base.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo CentOS-PowerTools.repo CentOS-centosplus.repo CentOS-Devel.repo CentOS-HA.repo CentOS-Sources.repo [root@dream postfix]# dnf repolist CentOS-8 - AppStream 0.0 B/s | 0 B 00:25 Failed to download metadata for repo 'AppStream' Error: Failed to download metadata for repo 'AppStream' Thanks, Jay

1 2

Logitech webcam for use with CentOS 7
by H 08 Jun '20

08 Jun '20

I am thinking of buying a Logitech C920S Pro HD or C922 webcam for the necessary video conferencing. Is anyone using that with Zoom or perhaps with Jitsi? Do I need drivers? Any issues? Thank you.

7 6

live centos 8?
by Michael Hennebry 07 Jun '20

07 Jun '20

Is there a live centos 8? If so, where? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

2 3

perl-Curses in C8?
by Mike McCarthy, W1NR 06 Jun '20

06 Jun '20

Are there any repos that would have perl-Curses for CentOS 8? It was always available in epel but not anymore. Thanks, Mike

2 1

How to disable dhcpv6-client on Centos 8
by Jay Hart 06 Jun '20

06 Jun '20

Machine is an internal server with zero need to provide or receive ip addresses using dhcp (all IPs are hard coded). Question: how do I disable dhcpv6-client on this box? [user@boxname user]# firewall-cmd --list-all public (active) target: default icmp-block-inversion: no interfaces: enp2s0 sources: services: cockpit dhcpv6-client http https ssh ports: protocols: masquerade: no forward-ports: source-ports: icmp-blocks: rich rules: Thanks, Jay

2 2

Bridge network for virt-manager
by Jerry Geis 05 Jun '20

05 Jun '20

Hello. I desire to get bridge network working using virt-manager. Centos 7 and centos 7 guest. >From researching I think I need to have a ifcfg-br0 file like this ? cat ifcfg-br0 DEVICE=nm-bridge0 STP=no TYPE=Bridge BOOTPROTO=none IPADDR=192.168.1.8 PREFIX=32 GATEWAY=192.168.1.1 IPV6INIT=no NAME=br0 ONBOOT=yes DELAY=0 Is that for sure needed ? The use that nm-bridge0 as the network name? I dont want to mess up my current setup. Thanks, Jerry

6 7

Re: [CentOS] migrating from sendmail to postfix, centos 6 to centos 8
by Pete Biggs 05 Jun '20

05 Jun '20

On Fri, 2020-06-05 at 07:32 -0500, Chuck Campbell wrote: > On 6/4/2020 8:58 AM, Pete Biggs wrote: > > > Fair enough, and I now understand the issues with root receiving and > > > handling emails. The problem with the alias is that ALL emails are being > > > sent out to my ISP, and on to the particular user. > > Even for local users that are in /etc/passwd? > Yes, I only have two local users, and email I send on the box ends up at > the outside ISP, then comes back via fetchmail, and procmail. I can read > it with IMAP from outside. I guess I'll live with this. So even if you do something like mail chuck at the command line (with whatever user has a local account) it still gets sent to the ISP? > I'm sure it is the RelayHost or RelayDomains that forwards the email > outbound to my ISP. relay_host is the host that mail is sent to if it can't be delivered elsewhere. relay_domains is a list of domains the host will relay mail to. > If I set up a local only account, those emails try > to go outbound as well, but are rejected as there is no registered user > of that name at my ISP. In /etc/postfix/main.cf what is 'local_recipient_maps' set to? Also, what about 'mydestination' If you look in /var/log/maillog what does a message log for a local user look like when sent using the mail command? P.

1 0

CentOS-announce Digest, Vol 184, Issue 2
by centos-announce-request＠centos.org 05 Jun '20

05 Jun '20

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2020:2355 CentOS 7 kernel BugFix Update (Johnny Hughes) 2. CESA-2020:2381 Important CentOS 7 firefox Security Update (Johnny Hughes) 3. CESA-2020:2378 Important CentOS 6 firefox Security Update (Johnny Hughes) 4. CESA-2020:2383 Important CentOS 6 bind Security Update (Johnny Hughes) 5. CESA-2020:2406 Important CentOS 6 freerdp Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Thu, 4 Jun 2020 15:57:04 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2020:2355 CentOS 7 kernel BugFix Update Message-ID: <20200604155704.GA1900(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2020:2355 Upstream details at : https://access.redhat.com/errata/RHBA-2020:2355 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 90880fda5382cdfbb3a8efa5819aaeaf432beb87f41cced03d0d4315d9b56f4f bpftool-3.10.0-1127.10.1.el7.x86_64.rpm 0a62bf26f4dcc406c7e93ba64113b5951bf0e3417e4048bf1eb9f692ce9fcba6 kernel-3.10.0-1127.10.1.el7.x86_64.rpm 4dedd65ef61d1267bfbdcba08bac83d9daed745dae3f319836ef815de867c644 kernel-abi-whitelists-3.10.0-1127.10.1.el7.noarch.rpm 872bbf427084610609bc1ca50c0c0125bc0288b94021a784af01e603b10ff6b7 kernel-debug-3.10.0-1127.10.1.el7.x86_64.rpm 9a61082cc7739fb979a4f89c427e9a56f877f4f212a6662d5bccf5dc53c85951 kernel-debug-devel-3.10.0-1127.10.1.el7.x86_64.rpm ffbc0b342b3c57411f7f20e8d472a77a721c43f48e533f0d2c1668c1ecff518c kernel-devel-3.10.0-1127.10.1.el7.x86_64.rpm 2bd013eb1697677f9335f62400cf661db0bfdd380672f17eab7201a82c89e239 kernel-doc-3.10.0-1127.10.1.el7.noarch.rpm 83cf78d1eb99f7d18f7b2d961c53d65fb2754c1f9cc6b4c4c19a7949313979e7 kernel-headers-3.10.0-1127.10.1.el7.x86_64.rpm 4b5f2447521ce65ad55a344e2329d4d678bdc4e3ab6a3de5ac71e97ec03ccf83 kernel-tools-3.10.0-1127.10.1.el7.x86_64.rpm 2d8e03ebf9b5396f0bc9807c65f0635f0cbb0df22322bfa76c003caf529b4b7b kernel-tools-libs-3.10.0-1127.10.1.el7.x86_64.rpm c3e80c27f04a07625e285675ea6ae47a0d8bf5ce869afdf32cc5cc0ed7be5816 kernel-tools-libs-devel-3.10.0-1127.10.1.el7.x86_64.rpm 88e6e25aee0c99313e5eef30a51de25b053641461ca9ab2dcc90befec3f1a4ec perf-3.10.0-1127.10.1.el7.x86_64.rpm 12e13fac92eecf8e55c6285409d046106a54d99c106a633c597b9e152b608bcb python-perf-3.10.0-1127.10.1.el7.x86_64.rpm Source: 0f6c8513b3a00d46c499d1db35acf54ebd1e3ff01d9d3da6d8eb51fd14e897b7 kernel-3.10.0-1127.10.1.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Thu, 4 Jun 2020 16:00:43 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2381 Important CentOS 7 firefox Security Update Message-ID: <20200604160043.GA2192(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2381 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2381 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: f74ffc53ad50103bb632597f34f8ad2d978d4833674d4bf50d49fd9d2c6f4f1c firefox-68.9.0-1.el7.centos.i686.rpm 2d5253ea7beff9a7ccb052d056d3eaf35a6a03a5d59551d67f3dfacf82bae124 firefox-68.9.0-1.el7.centos.x86_64.rpm Source: d64c5d0af07830f0acd90798f0fc722ab66bf0440a9be3422ac0e7d190afb8cb firefox-68.9.0-1.el7.centos.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 3 Date: Thu, 4 Jun 2020 16:02:07 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2378 Important CentOS 6 firefox Security Update Message-ID: <20200604160207.GA2361(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2378 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2378 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 856df97cac6587dfbbda84b3d1228a2a4a029e905eaf7e2d91510a1419c8d1d1 firefox-68.9.0-1.el6.centos.i686.rpm x86_64: 856df97cac6587dfbbda84b3d1228a2a4a029e905eaf7e2d91510a1419c8d1d1 firefox-68.9.0-1.el6.centos.i686.rpm 93a67e36a0ac83a9132b6f30657627561094abd81fad3547e6a536274f36a38e firefox-68.9.0-1.el6.centos.x86_64.rpm Source: f0bb0aaeaed1191848fee0a2bec55e2b9079aa5fa9b7baf932513047f9caf108 firefox-68.9.0-1.el6.centos.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 4 Date: Thu, 4 Jun 2020 16:10:05 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2383 Important CentOS 6 bind Security Update Message-ID: <20200604161005.GA2776(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2383 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2383 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 38e6935a774d6bf23e64738e47bd210b99e2ca71a8b4be858e4f38468f90f09c bind-9.8.2-0.68.rc1.el6_10.7.i686.rpm 38ab4c3d80d5ba490935027e9dac352f2a6500674fa38d94c7db4ad6ceaf65b2 bind-chroot-9.8.2-0.68.rc1.el6_10.7.i686.rpm 42e976e219a8fd5e3e55208df3535e54ed60c3902746b4620f5f919f9f8de34e bind-devel-9.8.2-0.68.rc1.el6_10.7.i686.rpm 2be485965db6cf9fe724fc16f772bfe15bf6dc4e4516f94f9697549f8e8b38ec bind-libs-9.8.2-0.68.rc1.el6_10.7.i686.rpm feb19898a3da1423604d5b7eedf261c47d648afcb907e18cdba3396d86da7b5c bind-sdb-9.8.2-0.68.rc1.el6_10.7.i686.rpm 757c6a9b10575ae842779e66e2e87dba2f353c13ba3fcdc88bf55243962c8e2b bind-utils-9.8.2-0.68.rc1.el6_10.7.i686.rpm x86_64: 043b382da00b5da9191d0fed17280757f70bde12b9f48730f0c2926245c9097b bind-9.8.2-0.68.rc1.el6_10.7.x86_64.rpm 1704dc77fb9c35475accbadc35176644c61d3989de04543093f2c760bad3252e bind-chroot-9.8.2-0.68.rc1.el6_10.7.x86_64.rpm 42e976e219a8fd5e3e55208df3535e54ed60c3902746b4620f5f919f9f8de34e bind-devel-9.8.2-0.68.rc1.el6_10.7.i686.rpm e8e129aa45200ede187103445d37e27ded0922accaf12c0551af3c253d51ee9d bind-devel-9.8.2-0.68.rc1.el6_10.7.x86_64.rpm 2be485965db6cf9fe724fc16f772bfe15bf6dc4e4516f94f9697549f8e8b38ec bind-libs-9.8.2-0.68.rc1.el6_10.7.i686.rpm c83ea96bcec6a7ce68266a5b5ba7681038c7c115e0d642747409bee518db7f03 bind-libs-9.8.2-0.68.rc1.el6_10.7.x86_64.rpm 7e745c2d513daf40a440027265a5c966cfc6e8e9a1cd39e9804a0eae40ce00fa bind-sdb-9.8.2-0.68.rc1.el6_10.7.x86_64.rpm 1d8b16ab1bf34e51ac160ba0c27afeb050639c37f0bed6ad68a06bf77bdb591b bind-utils-9.8.2-0.68.rc1.el6_10.7.x86_64.rpm Source: 452bb4f0ab96c2fec8012499a79fbac64703504888ce1896f427b69ab599ee3b bind-9.8.2-0.68.rc1.el6_10.7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 5 Date: Thu, 4 Jun 2020 20:08:00 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2406 Important CentOS 6 freerdp Security Update Message-ID: <20200604200800.GA11486(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2406 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2406 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 40052c3b9715a48e1c9af9e95e7a6066e0ec0ed6608657324f3fe355e9c1b8f5 freerdp-1.0.2-7.el6_10.i686.rpm 0df0853d13fc8d3dfc3c993ef2113eea6cc09943032ef6fc9efa04af8911edc7 freerdp-devel-1.0.2-7.el6_10.i686.rpm 464c929ecb74502cbf75b962255982726981f146606c08bc84f14b8d5dd60c48 freerdp-libs-1.0.2-7.el6_10.i686.rpm 08de995c79b51a1e8d0bce2e35a9e2098589f539ac2710edb4c1886c64d4bda5 freerdp-plugins-1.0.2-7.el6_10.i686.rpm x86_64: 84e0e22103a6f530bf3c3542f32b2cad958f1034405521dc76242e3a55609764 freerdp-1.0.2-7.el6_10.x86_64.rpm 0df0853d13fc8d3dfc3c993ef2113eea6cc09943032ef6fc9efa04af8911edc7 freerdp-devel-1.0.2-7.el6_10.i686.rpm 3ce674caf8c636d8c54a86ffcc210c50e2c5599d553edcc29ce39771d62f05c1 freerdp-devel-1.0.2-7.el6_10.x86_64.rpm 464c929ecb74502cbf75b962255982726981f146606c08bc84f14b8d5dd60c48 freerdp-libs-1.0.2-7.el6_10.i686.rpm 72def2a742c6b8b1d28a81a99d042d2b4646ce169908dcaf47e5b067e6e6b7af freerdp-libs-1.0.2-7.el6_10.x86_64.rpm f4e577036c923c1f84f11ae1310043f44260d4cc51b2857060099e40ab150895 freerdp-plugins-1.0.2-7.el6_10.x86_64.rpm Source: 28cbed327abc58d60686810bbba51cc577d10516d3ef77f361830ba2964005bf freerdp-1.0.2-7.el6_10.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 184, Issue 2 ***********************************************

1 0

Google authenticator on C8
by Patrick DERWAEL 05 Jun '20

05 Jun '20

Hi folks I have installed Google authenticator on a few C8 boxes This is working fine on all of them except one... - google-authenticator is installed and the box is added to my Android app - /etc/pam.d/sshd contains auth sufficient pam_google_authenticator.so - /etc/ssh/sshd_config contains ChallengeResponseAuthentication yes - sshd restarted When logging in, I'm prompted with the password (i.e. no request OTP request) I have already uninstalled/reinstalled/rebooted and compared the config files across boxes... but I can't see what I have done wrong Any clue about what I could have missed? Thanks! -- Patrick Derwael

1 0

Re: [CentOS] How to rebuild the kernel
by Harsh chopra 04 Jun '20

04 Jun '20

Hi everyone, I cloned and installed the 5.7 kernel from git. Also how do I analyze the system logs with journalctl and implement changes to recover my 3.10 kernel

2 1

Re: [CentOS] migrating from sendmail to postfix, centos 6 to centos 8
by Pete Biggs 04 Jun '20

04 Jun '20

> > Fair enough, and I now understand the issues with root receiving and > handling emails. The problem with the alias is that ALL emails are being > sent out to my ISP, and on to the particular user. Even for local users that are in /etc/passwd? > > I would like to make this user receive emails locally only, obviously > not root (for all the very good reasons you pointed out), but some other > non-privileged user. I don't know how to get a user setup only for local > only delivery to the machine in question, not sent out of the local network. > So something in the postfix configuration is telling it to send mail elsewhere. Have you changed the postfix config at all? Because usually it is happy to deliver local mail for local users. The aliases file should have something like root: chuck where 'chuck' is the local user; that will put the message in /var/mail/chuck. There's a postfix config variable called 'local_recipient_maps' that determines what is a local recipient - but the default uses, amongst other things, the standard unix passwd file. P.

1 0

migrating from sendmail to postfix, centos 6 to centos 8
by Chuck Campbell 04 Jun '20

04 Jun '20

I have an email server/aggregator which delivers locally for root, and all other emails in my domain. It sends outbound email to my isp (networksolutins) masquerading as my domain via smtp. This is with sendmail. It does not receive email from the internet via smtp. I use fetchmail to get incoming mail from multiple email/isp's. I use procmail for local delivery and serve emails using dovecot/imap. These all work fine. I am getting new hardware for this machine, and plan to setup centos 8, which uses postfix, not sendmail. I've been trying to provision a vm with the proper configuration, but cannot get any emails delivered to root. Is there a pointer to a configuration guide that will help me do what I want? I have googled about 100 setups, none of which are what I'm trying to achieve. They all suggest using an alias for root to a normal user, but them that user gets all of the cron, fail2ban, etc emails, instead of delivering them to root on the local machine. Thanks, -chuck --

2 1

How to rebuild the kernel
by Harsh chopra 03 Jun '20

03 Jun '20

Hi everyone, I am using Centos 7.8.2003 kernel 3.10 . I was trying to build and install the latest linux stable kernel i.e. 5.7, I successfully did the process but accidentally messed it up by copying the .config file again in 5.7 kernel src,I tried to rebuild the 5.7 kernel but got make error as I was still on 5.7 kernel. Then I changed to 3.10 and tried to rebuild 5.7 but was not successful. I tried to reboot the system but this time I was in the maintenance mode. So if anyone could suggest any help in recovering the 3.10 kernel.

2 1

Help needed for installing MT7601U Linux driver
by Harsh chopra 02 Jun '20

02 Jun '20

Hi everyone, My PC don't have an integrated WLAN card, so I bought an USB WIFI device which use the MediaTek MT7601U chip(image 'dongle.jpg'). ------------------------------------------------------------------------------------------------------ My PC specification- OS = CentOS 7.8.2003. Processor = AMD Ryzen 5 1600. Mother-Board = GA-Gigabyte A320M-S2H ------------------------------------------------------------------------------------------------------- The lsusb lists devices- It is in the attachments below (ls_usb) Under /lib/modules/3.10.0-1127.el7.x86_64/kernel/driver/net/wireless/ - It is in the attachments below (wireless_list) Under /lib/modules/3.10.0-1127.el7.x86_64/kernel/driver/net/wireless/ralink/rt2x00 - It is in the attachments below (ralink_list) lsmod list - It is in the attachments below (ls_mod) ---------------------------------------------------------------------------------------------------------- I found the github page for installing MT7601U Linux driver "https://github.com/imZack/mt7601" I am having trouble in building the driver as the installation process requires Synology toolchain <http://sourceforge.net/projects/dsgpl/files/DSM%205.1%20Tool%20Chains/> and kernel source <http://sourceforge.net/projects/dsgpl/files/Synology%20NAS%20GPL%20Source/5…> But I don't know which toolchain and Kernel source to install also I had to manually load the modules rt2800usb.So if anyone have any suggestion please let me know.

3 2

CentOS-announce Digest, Vol 184, Issue 1
by centos-announce-request＠centos.org 02 Jun '20

02 Jun '20

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2020:2334 Important CentOS 7 freerdp Security Update (Johnny Hughes) 2. CESA-2020:2337 Important CentOS 7 git Security Update (Johnny Hughes) 3. CESA-2020:2344 Important CentOS 7 bind Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 1 Jun 2020 17:27:23 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2334 Important CentOS 7 freerdp Security Update Message-ID: <20200601172723.GA12461(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2334 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2334 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: e9e31d04292b8a74dd0059fa677993199d6560901e05d899bff523292e396433 freerdp-2.0.0-4.rc4.el7_8.x86_64.rpm 9525ccd52c4cff879c9c875be6e7639f7928305e3fb45e6b110f51768ad3435e freerdp-devel-2.0.0-4.rc4.el7_8.i686.rpm 03bbcd326f47c1b9b7e4b2fc2b01eabbfd5e237529c04985fc68035a3470b5e8 freerdp-devel-2.0.0-4.rc4.el7_8.x86_64.rpm a8fe2f06e27066efae184329614a8574dd3dd7117f1ba4b55ea500e63334ad37 freerdp-libs-2.0.0-4.rc4.el7_8.i686.rpm aad00478548f2a342ed111ae27ad492942c6890b7bd9de1f58954eaca05c7c4a freerdp-libs-2.0.0-4.rc4.el7_8.x86_64.rpm 9e6df1358ba37d30cd7a6e0db76a6ee242bdc0aed0c1a5e039035ec963814555 libwinpr-2.0.0-4.rc4.el7_8.i686.rpm 32cbd21c213f11009dc3fd3b9dc85e74c8f6a32e136f558bcf0101f9b0137b0f libwinpr-2.0.0-4.rc4.el7_8.x86_64.rpm 96d53bb2a1ff0cc5d2545052eafac0ddd3f6bbeab1df28ee2c59fbb53380f88a libwinpr-devel-2.0.0-4.rc4.el7_8.i686.rpm c20c8eb83a977c474a71e3058f67afc3d6734043bc4e2c47cda817ffe6504466 libwinpr-devel-2.0.0-4.rc4.el7_8.x86_64.rpm Source: fec5dcb3b0acb6a41a8b1941355df873663e1e0e135757c003edbaf152b84bd3 freerdp-2.0.0-4.rc4.el7_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Mon, 1 Jun 2020 17:28:40 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2337 Important CentOS 7 git Security Update Message-ID: <20200601172840.GA12832(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2337 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2337 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 86ddd0d6b71eadfc635da7932798cec7d018eb7a72fc85dee5b92b713daf4e81 emacs-git-1.8.3.1-23.el7_8.noarch.rpm 7836a795983d8a8be333000a71c5abe8a208ba0f908627725f359708070a37d6 emacs-git-el-1.8.3.1-23.el7_8.noarch.rpm e92952c8a62037ba2d78ad57e7c97e66966e22bf66be12fd2591036b5e73245a git-1.8.3.1-23.el7_8.x86_64.rpm 5ae5dc45141c8736d8c9c4f700f0bb300d2d61c344ea47581f532df7ecac2169 git-all-1.8.3.1-23.el7_8.noarch.rpm 6c646fcbc52ef489c8a27a633497002fcad39c11df5ced2709b3511e175f1011 git-bzr-1.8.3.1-23.el7_8.noarch.rpm 1501ff27d796808aa9b64303f421351dd1fbaf4af0c5c196d6f49e5fee03466b git-cvs-1.8.3.1-23.el7_8.noarch.rpm 93a299387958200cff00127fbdcda934af34bf9a624d3a6a34589f39e3428eab git-daemon-1.8.3.1-23.el7_8.x86_64.rpm 0b36556188fbc5cbfd60ac5100672460dcd28b9c315b9615aa3213c580df9297 git-email-1.8.3.1-23.el7_8.noarch.rpm b33d482116e336c7c32aaaf54821c5bdd0b6327f6ffdb937c1406759507d1987 git-gnome-keyring-1.8.3.1-23.el7_8.x86_64.rpm c7d920286ca5a71baa0c6635e80944336da4fdfdc044e40ef0316a183be01fea git-gui-1.8.3.1-23.el7_8.noarch.rpm 36029dffe4ada0b402292298587c4a0e648ce6060bf824a23c72d13ccd517447 git-hg-1.8.3.1-23.el7_8.noarch.rpm eefcbca59152d3d20409a503ad6302a2012e14f16e880a42fc947576e596800e git-instaweb-1.8.3.1-23.el7_8.noarch.rpm 4472d40bb16b4c2fdbe6868a7b44430aecd49c5cf43c04f554d88695426b66b3 gitk-1.8.3.1-23.el7_8.noarch.rpm ac0bffc0baf7ee51bb73e97bde043081f313cc15d12a4cb080f282ac50c40a0d git-p4-1.8.3.1-23.el7_8.noarch.rpm 130ba8568e95838fee878b2dc4d467a9bfb94ec4f27a425daaab2cebf1104067 git-svn-1.8.3.1-23.el7_8.x86_64.rpm 2e616300637e132bfab013e3edc9d8fcafaa63f169022d2012bdd108278956ac gitweb-1.8.3.1-23.el7_8.noarch.rpm e5ebcc9bd42d06dae2da84d0328a9806be288ad726e00f86691be5e08cee1ee7 perl-Git-1.8.3.1-23.el7_8.noarch.rpm 9bafb4b8c6e850c7cb3111d5c5603489e48162e77ffaabe6f4f65e3a34c673c0 perl-Git-SVN-1.8.3.1-23.el7_8.noarch.rpm Source: 08be03369653e145408cf54b836dcdeae06abd558c11decd0b00bfcfdc5f37fe git-1.8.3.1-23.el7_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 3 Date: Mon, 1 Jun 2020 17:29:59 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2020:2344 Important CentOS 7 bind Security Update Message-ID: <20200601172959.GA13139(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2020:2344 Important Upstream details at : https://access.redhat.com/errata/RHSA-2020:2344 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 7d441e8126dd927899c78af78ffd1f1e460afef943e27596cacb4fd917cdf708 bind-9.11.4-16.P2.el7_8.6.x86_64.rpm b2636b99596138a3eb6f29f55d40506dbb8f9c8d98bafea6eae1dad0220ee26c bind-chroot-9.11.4-16.P2.el7_8.6.x86_64.rpm b6684c4a2a9341e877cf1766d21d75f47af5dede5138c5eeccc8814aab9e7b6d bind-devel-9.11.4-16.P2.el7_8.6.i686.rpm 7426c0203ca23e864c4e4de8164d583a68bc03dc721e44362670eb32eaa431bd bind-devel-9.11.4-16.P2.el7_8.6.x86_64.rpm 28fe7d1ef023376eaae5f1acbcc67b7e4a7b7072ef647871f5d554de9e5a3455 bind-export-devel-9.11.4-16.P2.el7_8.6.i686.rpm 2c810c025cc0045c4376c0b6600757d5cdb6348e47ddb8b8c9edbbcdf2097073 bind-export-devel-9.11.4-16.P2.el7_8.6.x86_64.rpm ea5d207bd67c2b037ed570a580848774a896650225a0afa308782bbba6b8ea0b bind-export-libs-9.11.4-16.P2.el7_8.6.i686.rpm 34952d49a47be7d5ceb00f1ccd399a11a752189d5aec601a77d93f3149888f9b bind-export-libs-9.11.4-16.P2.el7_8.6.x86_64.rpm 471c9492025d23abaa228be48ca0bfc3167bcbe58830c781e6176b6ffc46ff50 bind-libs-9.11.4-16.P2.el7_8.6.i686.rpm 94ff4f96c5baf7497561bdab1c460ca770705c8361928a9006c0659d05f8bba3 bind-libs-9.11.4-16.P2.el7_8.6.x86_64.rpm 959292b622b74c6771b234fd384e5824e05e42178e8c8d909af68707525f86c0 bind-libs-lite-9.11.4-16.P2.el7_8.6.i686.rpm b346000d2a94267f3d4e450da340ee8899118e147309f222866f8e92f2eec991 bind-libs-lite-9.11.4-16.P2.el7_8.6.x86_64.rpm d412f3d546e61dceadb365a0330e05e39f3f17a34fa498282f8185b30873d13a bind-license-9.11.4-16.P2.el7_8.6.noarch.rpm 7d84f1efafe000a200cc69c19745ec7160b367816960d4d9b68b74dbd958587f bind-lite-devel-9.11.4-16.P2.el7_8.6.i686.rpm a4f5b9133a0f7a61ecb39821447653dd74a0e566d550a07419a74a6987f5f6a2 bind-lite-devel-9.11.4-16.P2.el7_8.6.x86_64.rpm 89c63dc7c96ed48abafd2f47d8d136386e748bf4b18fdde1542b5fe6d2026972 bind-pkcs11-9.11.4-16.P2.el7_8.6.x86_64.rpm 849903c6ebad979c99eacfda2da0a163278f96c71391c70dacbe37d02cb49cff bind-pkcs11-devel-9.11.4-16.P2.el7_8.6.i686.rpm 18a0eeb4fccdbe2e7461e887f1b706c7a5c15829ddbd10be58d425e8d8cf8977 bind-pkcs11-devel-9.11.4-16.P2.el7_8.6.x86_64.rpm 73a2af6e7bc4b18900736aac2169075cae1d6ba1c8ad66edc7ab35c55e314c7f bind-pkcs11-libs-9.11.4-16.P2.el7_8.6.i686.rpm 3bbfd7a6839cc3212ce64dea5783ba902179b22db4d92cf645187f6d30a4bcaa bind-pkcs11-libs-9.11.4-16.P2.el7_8.6.x86_64.rpm 7c168b20b00c0448d9f8b328255887fe1b56cdef945b685a1c8a01ab18c484bc bind-pkcs11-utils-9.11.4-16.P2.el7_8.6.x86_64.rpm bf935560405dec5ad9ef7cc57f375e872b41cccab0fd485485ad00bcf33c1dac bind-sdb-9.11.4-16.P2.el7_8.6.x86_64.rpm 62d0e11eba7a5abf23ce990fcaf995a7577911d7d03523c67ebd414563116026 bind-sdb-chroot-9.11.4-16.P2.el7_8.6.x86_64.rpm 54fcca52cf394832615bb650b2f51a9eca3135c38c2e94081996012f56e7bcae bind-utils-9.11.4-16.P2.el7_8.6.x86_64.rpm Source: 3ba83af739659dabac74d8ab36962632fb890fb826a28ea969719f2cf3d9efd7 bind-9.11.4-16.P2.el7_8.6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 184, Issue 1 ***********************************************

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user names
by Jerry Geis 02 Jun '20

02 Jun '20

How can I define a local use with "@" in the name useradd "bob@myname" gives error. I "need" to have the @ sign in the name -is that possible. Silly reason - the system I am trying to send emails to the linux server has a bug. I'm trying to get around it. Thanks, Jerry

8 13

Where can I find centos-release-8.1-1.1911.0.9.el8.src.rpm
by me＠tdiehl.org 01 Jun '20

01 Jun '20

Hi, I am looking for centos-release-8.1-1.1911.0.9.el8.src.rpm. Does anyone know where to find it. The only thing I see in vault is centos-release-8.1-1.1911.0.8.el8.src.rpm. Regards, -- Tom me(a)tdiehl.org

3 2

docker-firewalld
by Thomas Stephen Lee 31 May '20

31 May '20

Hi, https://fedoraproject.org/wiki/Changes/firewalld_default_to_nftables mentions a docker-firewalld where can I find that package or source code? thanks --- Lee

3 5

looking for ideas about how to create a constant data stream
by hw＠gc-24.de 30 May '20

30 May '20

Hi, I'm looking for a good way to create a constant data stream that will occupy a bandwidth of about 2--5Mbit/sec between two remote hosts over the internet. I have full access to the hosts involved. My first attempt to use scp to copy data from /dev/null on host A to /dev/null on host B, but scp says '/dev/null: not a regular file'. If something like that would work, I would be able to limit the bandwidth of this transfer in the router(s) involved so that it won't occupy all the bandwidth. Of course, it would be better if I could limit the bandwidth on the sending side rather than dropping packages. I could probably write some program to do that, but since I have never programmed such a kind of network application, it would be rather time consuming. Maybe there's already a kind of tool around that can do this. I need this to work around whatever settings my ISP has made 3 days ago that block my VPN connection so that I effectively can't reasonably work anymore. I do know what the problem with the connection is and that occupying some bandwidth would unblock the VPN; only there doesn't seem to be anything else I could about it.

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Re: [CentOS] Recover from an fsck failure
by James B. Byrne 29 May '20

29 May '20

On Thu, May 28, 2020 19:38, Robert Nichols wrote: > What output do you get from: > > file -s /dev/mapper/vg_voinet01-lv_log > lsblk -f /dev/mapper/vg_voinet01-lv_log > file -s /dev/mapper/vg_voinet01-lv_log /dev/mapper/vg_voinet01-lv_log: symbolic link TO '../DM-5' dm-f lsblk -f /dev/mapper/vg_voinet01-lv_log NAME FSTYPE LABEL UUID MOUNTPOINT vg_voinet01-lv_log (dm-5) The cloned source is a CentOS-6.6 based FreePBSX appliance using lvm. It has a single 500GB HDD. The source host is running and testing of its HDD shows no errors from the test. However, the number of recoverable read and write errors are abnormally high indicating that the HDD is approaching the end of its service life. I wish to replace it without having to rebuild the entire PBX system from scratch. All of the LVMs on the cloned HDD are ext4 file systems. The only one that failed is the log partition /var/log. If I cannot fix this then I wish to replace it with an empty fs and simply rsync the contents of /var/log from the running system to it. I need to do this anyway just prior to replacement as the PBX is running. However, it is about six years since I last had to do this and while I have my notes I would appreciate a short precis of the steps involved. This is the file system layout. /etc/fstab /dev/mapper/vg_voinet01-lv_root / ext4 defaults 1 1 UUID=302ab0fo-f985-4903-86e2-e218b1345e0 /boot ext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_home /home ext4 defaults 1 2 /dev/mapper/vg_voinet01-LogVol04 /var ext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_log /var/log ext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_spool /var/spool ext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_swap swap swap defaults 0 0 tmpfs /dev/shm tmpfs defaults,nodev,. . . parted -l Model: ATA WDC WD1002FAEX-0 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1094kB 525MB 524MB primary ext4 boot 2 525MB 500GB 500GB primary lvm Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_spool: 68.7GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size Type File system Flags 1 0.00B 68.7GB 68.7GB primary ext4 Error: /dev/mapper/vg_voinet01-lv_log: unrecognized disk label Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_home: 3355MB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size Type File system Flags 1 0.00B 3355MB 3355MB primary ext4 Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-LogVol04: 336GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size Type File system Flags 1 0.00B 336GB 336GB primary ext4 Error: /dev/mapper/vg_voinet01-lv_swap: unrecognized disk label Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_spool: 67.1GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size Type File system Flags 1 0.00B 67.1GB 67.1GB primary ext4 I will have to do this from a live cd I presume as the shell that the failed boot process dropped me into give a "File-based locking initialisation failed." when I try to run vgdisplay or vgs. Any guidance appreciated. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Re: [CentOS] network disconnection after several hours
by Thomas Poty 29 May '20

29 May '20

I will check with firewall-cmd. Regarding hardware problem I have doubt as we use VMWare (but I keep in a corner of my mind).At this moment, we have compiled kernel and have installed it and have tried 4 restore passed.We need to do more tests and understand why 4 restores passed. Thanks Thomas Poty Le jeudi 28 mai 2020 à 23:58:22 UTC+2, hw <hw(a)adminart.net> a écrit : On Tuesday, May 26, 2020 2:42:13 PM CEST Thomas Poty via CentOS wrote: > Hi,We have tried : > - with and without NetworkManager-config-server- with and without > NetworkManagerbut result is still the same : we get disconnection :-/ We > will try with the last kernel. > anybody has a track to explore ? > Thanks > Have you enabled logging with firewall-cmd to see if there are packets being dropped while the dump is being restored? Besides that, one of the first things I'd try is changing out the network card, replace the network cable and use a different port on the switch. Keep in mind that two machines are involved. Even stupid network cables can "switch" between working and non-working for no reason at all like you wouldn't believe ... until you plug them into a PoE switch by mistake after which they suddenly no longer work at all.

1 0

Recover from an fsck failure
by James B. Byrne 28 May '20

28 May '20

This is CentOS-6x. I have cloned the HDD of a CentOS-6 system. I booted a host with that drive and received the following error: checking filesystems /dev/mapper/vg_voinet01-lv_root: clean, 128491/4096000 files, 1554114/16304000 blocks /dev/sda1: clean, 47/120016 files, 80115/512000 blocks /dev/mapper/vg_voinet01-lv_home: clean, 7429/204800 files, 90039/819200 blocks /dev/mapper/vg_voinet01-LogVol04: clean, 770219/20480000 files, 34881086/8102000 blocks fsck.ext4: Bad magic number in super-block while trying to open /dev/mapper/vg_voinet01-lv_log /dev/mapper/vg_voinet01-lv_log The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsk -b 8193 <device> /dev/mapper/vg_voinet-lv_spool: clean, 372/614400 files, 171186/2457600 blocks *** An error occurred during the file system check. *** Dropping you to a shell; the system will reboot *** when you leave the shell. Give root password for maintenance (or type Control-D to continue): I ran mke2fs to locate the backup superblocks: mke2fs -n /dev/mapper/vg_voinet01-lv_log . . . Superblock backups stored on blocks: 32768, 90304, 163840, 229376, 294912, 819200, 884736, 1605632 and ran: e2fsck -b 32768 /dev/mapper/vg_voinet01-lv_log The superblock could not be read or does not describe a correct ext2 The same thing happened for the next backup superblock addrees. And all the rest reported an invalid argument error from e2fsck. Is this recoverable? How? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

3 2

xinetd custom service - perl - remote address
by Gary Stainburn 28 May '20

28 May '20

Hi all, I can't believe that I can't find the answer to this one. I have a perl script which is called by xinetd. I want that perl script to be able to detect the remote IP address of the caller. I presumed that it would be an environment variable but I could be wrong. I've found reference to the ENV and PASSENV arguments for xinetd.conf but no examples, and no indication of what auguments to use. In my script I have the following code: foreach (keys %ENV) { print "$_=$ENV{$_}\n";} but the only line I get back is: XINETD_LANG=en_US

5 5

Adobe digital editions?
by mark 28 May '20

28 May '20

I had it installed, running under WINE on CentOS 6. Bought a ebook, it insisted it needed ADE, I d/l from the sellers site... setup.exe won't run. Tried d/l 4.5 and 3 from Adobe, neither installer works, The one from their website: file setup.exe setup.exe: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive Anyone run into this yet? I have books I *bought*, and I want them.... mark

6 15

IPv6 inbound routing
by Kenneth Porter 26 May '20

26 May '20

I see my ISP's gateway sending me neighbor solicitations to my external WAN interface for LAN clients on my internal LAN interface. How do I get the box to tell the ISP gateway that my box will route those addresses? I've been assigned a /56 and I'm using a /63 for the DMZ and a /64 for the LAN. The outbound packets seem to reach the destination server but nothing comes back. I'm assuming it's because the ISP router doesn't know to give my box the packets for the LAN clients. I'm using "tcpdump icmp6 -i em2" to watch the exchange. (For outbound routing, I have radvd configured to send router announcements to the LAN, and that seems to work, based on the packets I recieve from the LAN and from watching it with Wireshark on a Win10 client.)

1 0

Re: [CentOS] ip6tables equivalent for NAT?
by John Pierce 26 May '20

26 May '20

with ipv6, you just allow the specific ports destined to the specific local machine(s) in on your WAN side, they don't need translating. same sort of rule as if you had a internet-facing service running on the routing system On Tue, May 26, 2020 at 11:55 AM Kenneth Porter <shiva(a)sewingwitch.com> wrote: > I finally got an ISP connection with working IPv6 and now I need to add > firewall rules for forwarding connections from my LAN to the WAN. I'm > using > firewalld to handle the high-level description that gets translated to > iptables/ip6tables on CentOS 7. > > Of course, with IPv6, one doesn't do NAT, so the usual masquerade target > doesn't make sense. But I want similar connection logic, with no inbound > connections allowed to LAN clients and all outbound connections allowed. > How does one express this in either firewalld or its ip6tables "direct > rules"? > > I don't currently need port-forwarding to internal servers but, for > completeness, what would such rules look like? > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > https://lists.centos.org/mailman/listinfo/centos > -- -john r pierce recycling used bits in santa cruz

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ip6tables equivalent for NAT?
by Kenneth Porter 26 May '20

26 May '20

I finally got an ISP connection with working IPv6 and now I need to add firewall rules for forwarding connections from my LAN to the WAN. I'm using firewalld to handle the high-level description that gets translated to iptables/ip6tables on CentOS 7. Of course, with IPv6, one doesn't do NAT, so the usual masquerade target doesn't make sense. But I want similar connection logic, with no inbound connections allowed to LAN clients and all outbound connections allowed. How does one express this in either firewalld or its ip6tables "direct rules"? I don't currently need port-forwarding to internal servers but, for completeness, what would such rules look like?

1 0

network disconnection after several hours
by Thomas Poty 26 May '20

26 May '20

Hello, Here is the context during the problem occurs : We have a new machine running on centos 8.From this machine, we restore a postgresql dump on an other machine runnning on centos 7.After several hoursof running, restore fails due to a disconnection (no route to host).But, if we disable the firewall on centos 8, restore succeed. Before having this new centos 8 machine, we had a centos 7 machine and all worked fine with firewall activated. Has anyboby an ideas, clues or something else? Thanks, Thomas Poty

2 4

Thunderbird Revision Issues
by Mark LaPierre 25 May '20

25 May '20

Hey all, CentOS 6 has Thunderbird 68.8.0 CentOS 8 has Thunderbird 68.7.0 When I rsync my .thunderbird folder from my CentOS 6 machine to my CentOS 8 machine and start Thunderbird it says: "A newer version of Thunderbird may have made changes to your profile which are no longer compatible with this older version. Use this profile only with that newer version, or create a new profile for this installation of Thunderbird. Creating a new profile requires setting up your accounts, calendars and add-ons again." Needless to say, this is not an acceptable choice. I have several email accounts that would have to be set up. That's not such a big issue, but I have many local folders set up that I can't duplicate on the new installation if I can't use my previous profile. Does anyone know when CentOS 8 will catch up with CentOS 6 so that I can start using my new CentOS 8 box? Perhaps there is another work around. I've tried many of the solution provided on the mozilla web site to no avail. I even tried to install Thunderbird 68.8.0 on my CentOS 8 box. That didn't make it happy either. What now brown cow? -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

4 5

mkfs.fat Device or resource busy
by Michael Hennebry 25 May '20

25 May '20

I'm trying to format a 16 GB SD card to FAT32. Either it won't find the device or it gives me the titular error message. mkfs.fat /dev/sdc I have tried "ejecting" the drive and reinserting the card. I have tried inserting another card, checking to insure that I could see its file, ejecting that card and inserting the target card. If I do not umount it, busy, if I don't, not found. What is the incantation for formatting an SD card. BTW I am using Centos 7 and a USB adapter. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

2 2

authconfig vs authselect
by Leon Fauster 24 May '20

24 May '20

I had the habit to use authconfig --passalgo=sha512 --update but in EL8 its not supported anymore. The authselect-compat package is installed (and it says "not supported anymore and have no effect). Whats the equivalent call using the new tool "authselect"? -- Thanks Leon

2 1

Re: [CentOS] ether-wake
by Rich Greenwood 23 May '20

23 May '20

Some switch hardware can generate the packets directly, negating the need for a box on every VLAN. Meraki hardware can do it, but you have to go through the dashboard so automating it isn't currently possible. Here is some documentation on forwarding WoL on catalyst 3750 switches from Cisco: https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-sw… -- Rich Greenwood Network Engineer Shasta County Office of Education 530-225-0161

4 4

External Array Data Migration
by Xinhuan Zheng 23 May '20

23 May '20

Dear All, Below question has been puzzled me for a while, and don’t know if anyone has experienced such puzzle: You have an external array attached to a physical hardware. The operating system is CentOS 5. The file system is created on top of LVM on external array & mounted. The CentOS 5 can see the array controller, and manage all LVM configuration, etc. There is data stored in that external array. At some point, you want to upgrade the operating system to higher version, CentOS 7. Is there a fast way to migrate the external array data volume to new hardware with CentOS 7 without doing machine-to-machine rsync the whole external array data volume? In another words, can I detach external array from old hardware, and attach it to new hardware, then re-configure LVM, so new operating system can recognize the external array file system? Thanks, - Xinhuan

2 1

Re: [CentOS] How to Load Custom CentOS 7 Image
by Xinhuan Zheng 21 May '20

21 May '20

Dear All, > It seems like kickstart is what you are looking for.? > Is this what you were trying to do? Yes, kickstart is what I’m looking for. Let me detail my provisioning process: * Provision a VM with standard CentOS 7 NetInstall ISO & my post script. The file system is created on top of LVM * Export entire VM as custom ISO image to be loaded into physical hardware * Kickstart physical hardware using above exported custom image & different grub/isolinux configuration Although I could just use the same CentOS 7 NetInstall ISO & run all my post script to the physical HW, it may take a few hours, since post script is long, and I wonder if above process will speed up, since the VM has everything needed. If that process isn’t feasible, then I’ll just do the same thing for physical hardware. Thanks, - Xinhuan

2 1

how does autofs deal with stuck NFS mounts and suspending to RAM?
by hw 21 May '20

21 May '20

Hi, after trying sshfs to mount a remote file system on a server with the result that sshfs will sooner or later get stuck and require a reboot of the client, I'm fed up with it and am looking for alternatives. So next I would like to use NFS over a VPN connection instead. To minimize the instances of the NFS mount getting stuck, it might be helpful to use autofs. What happens when the mount is stuck because the connection is down and autofs figures the idle timeout has expired and tries to unmount the remote file system? What happens when I put the client to sleep by suspending to RAM? Will autofs automatically unmount first, or will the server have to deal with a client that has apparently gone away and might re-appear later in unexpected ways? Is there a way to tell NFS to retry an operation _now_ after the connection went down and came back, rather than having to wait for a possibly rather long time? Is there a better alternative for mounting remote file systems over unreliable connections?

5 7

Re: [CentOS] How to Load Custom CentOS 7 Image
by Xinhuan Zheng 20 May '20

20 May '20

Dear Earl Ramirez, >I created a custom ISO a couple of years ago [0], you can use it as >your base of one of the following links[1-4], should be sufficient to >get you started. >[0] https://github.com/EarlRamirez/snipeit_iso In above github project, in https://github.com/EarlRamirez/snipeit_iso/blob/master/isolinux/grub.conf file, there is ‘@‘ symbol for splashimage, and for kernel, @KERNELPATH@, @ROOT@, etc. Will those be replaced by actual values? Where do actual values come from? How does actual values substitute those variables? Thanks again, - Xinhuan

2 1

Transparent Squid and FirewallD : fine-tuning question
by Nicolas Kovacs 19 May '20

19 May '20

Hi, I just setup a very basic HTTP proxy with Squid on a router running CentOS 7. Up until early 2020 I've been using a bone-headed shell script with iptables to configure my firewall. But I decided to follow advice from a few gurus on this list, and I've since moved my configurations to FirewallD, which works nicely. There's one configuration left to tackle, that's port redirection for the Squid proxy server. Which also works fine, though I'd like to figure out a little detail. Here goes. My router has two network interfaces, which I've aptly named WAN and LAN in the NetworkManager configuration: $ nmcli con show NAME UUID TYPE DEVICE WAN 9574b606-8f6d-3edc-95ad-8165df0f3fce ethernet enp2s0 LAN c726b168-1fcd-4dc5-a01d-8ad8a1ba38ee ethernet enp3s1 Squid is acting as a transparent proxy server: $ sudo grep http_port /etc/squid/squid.conf http_port 3128 transparent In my firewall configuration, all requests to port 80 (HTTP) are redirected to port 3128: $ sudo firewall-cmd --permanent --add-forward-port=port=80:proto=tcp:toport=3128:toaddr=192.168.3.1 $ sudo firewall-cmd --reload $ sudo firewall-cmd --list-all internal (active) target: default icmp-block-inversion: no interfaces: enp3s1 sources: services: dhcp dns http squid ssh ports: protocols: masquerade: no forward-ports: port=80:proto=tcp:toport=3128:toaddr=192.168.3.1 source-ports: icmp-blocks: rich rules: In the current state, this configuration works as expected. When a client desktop in the 192.168.3.0/24 network browses HTTP sites on the web, it appears in the Squid log on the server in /var/log/squid/access.log. And here comes the question. How can I redirect all HTTP requests to port 3128 EXCEPT THOSE THAT ARE DIRECTLY AIMED AT THE PROXY SERVER? Here's the thing. The proxy server (amandine.sandbox.lan) is also running httpd to display a static information page for the local network. Now client desktops can access http://amandine.sandbox.lan in a web browser just fine. But this still goes through the proxy, and I'd like these requests to rather be handled directly. In iptables syntax this would vaguely look like this: $ iptables -A PREROUTING -t nat -i 192.168.3.1 -p tcp \ ! -d 192.168.3.1 --dport 80 -j REDIRECT --to-port 3128 How can I translate the "! -d 192.168.3.1" part into some FirewallD-specific syntax ? Cheers from the sunny South of France, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12

7 11

Centos8.1 Plymouthd crash 913: ply_event_loop_watch_for_timeout: Assertion `seconds > 0.0' failed.
by LAHAYE Olivier 18 May '20

18 May '20

Hi, I’m running a special initrd generated for SystemImager with a special dracut module that relies on plyouth scripted theme. It works perfectly on CentOS-6, CentOS-7, OpenSUSE-42.3, Fedora-29 (not tested later) and used to work on CentOS-8.0 Since CentOS-8.1 was released, IT chrashes with the following error: Plymouthd crash 913: ply_event_loop_watch_for_timeout: Assertion `seconds > 0.0' failed. I’m running quemu 5.0.0 with tianocore UEFI bios on MacOS (using accel=none or accel=hvf) (Bug also occurs with standard 256k bios) When I strace, I see multiple reasons but I can’t tell wich one is fatal. 1/ plymouthd reads /etc/Plymouth/plymouthd.conf (ok), then tries to read them from /var/run/plymouth/themes/<themename> instead of /usr/share/plymouth/themes/<themename>/ . As it fails it tries to read /var/run/plymouth/plymouthd.defaults (fails) then /usr/share/plymouth//plymouthd.defaults (ok) then it tries to read the theme /var/run/plymouth/themes/<themename>/<themename>.plymouth (fails) but never tries to read in from /usr/share/plymouth/themes/<themename>/<themename.plymouth> ??? It still continues 2/ After a few things, it tries to read /sys/devices/virtual/drm/ttm/uevent (ok) and the it tries to read /run/dev/data/+drm:ttm (fail). Is it expectable or does this means a problem like a missing udev rule or a boch driver bug or something else? 3/ Same as step 2 4/ Crash with @lymouthd: ply-event-loop.c:913: ply_event_loop_watch_for_timeout: Assertion `seconds > 0.0' failed. I’ve reported this in Centos-8.1 with no return and then RedHat-8.1 today. RedHat 8.1 bug report: https://bugzilla.redhat.com/show_bug.cgi?id=1836828 CentOS-8.1 bug report: https://bugs.centos.org/view.php?id=17140 Any idea where I could look for? More likely a plymouth bug or an udev missing rule or something else? (full dmesg and strace log in bug reports) Thanks a lot for any tips. PS: looking at google results, the only things I can find are very old bugs without resolution (not fixed and obsoleted due to new OS release) -- Olivier LAHAYE

1 0

Live Patching Upgrade CentOS 7
by Xinhuan Zheng 18 May '20

18 May '20

Dear All, Does anyone know how to to live patching upgrade of CentOS 7 without rebuilding the whole boot volume? I have enough disk space in Boot volume. I don’t want to go through creating a new VM and install CentOS 7 patch release. Thanks, - Xinhuan

1 0

kvm: C8 as guest on C6 host / huge delay while booting
by Leon Fauster 18 May '20

18 May '20

Since C8.1 kvm guests have a huge delay while booting on a kvm host based on C6. This delay was not present with C8.0. The "pause" happend direct after the grub step. The VNC session shows only a "_" character. Any ideas what changes? -- Leon

3 4

Missing announcement for the latest kernel
by David Hrbáč 18 May '20

18 May '20

Hi, It seems that kernel-2.6.32-754.29.2 has not been announced on the maillist. https://access.redhat.com/errata/RHSA-2020:2103 Regards, DH

1 0

Stuck Centos 7 to 8 upgrade
by Frank M. Ramaekers Jr. 16 May '20

16 May '20

Four problems below: # dnf -y groupupdate "Core" "Minimal Install" bintray-tvheadend-stable 0.0 B/s | 0 B 00:00 Failed to synchronize cache for repo 'bintray-tvheadend-stable', ignoring this repo. Last metadata expiration check: 0:03:11 ago on Sat 16 May 2020 12:30:47 PM CDT. Error: Problem 1: package python3-hawkey-0.35.1-9.el8_1.x86_64 requires librpm.so.8()(64bit), but none of the providers can be installed - package python3-hawkey-0.35.1-9.el8_1.x86_64 requires librpmio.so.8()(64bit), but none of the providers can be installed - package python3-dnf-plugins-core-4.0.8-3.el8.noarch requires python3-hawkey >= 0.34.0, but none of the providers can be installed - cannot install both rpm-libs-4.14.2-26.el8_1.x86_64 and rpm-libs-4.11.3-43.el7.x86_64 - package dnf-plugins-core-4.0.8-3.el8.noarch requires python3-dnf-plugins-core = 4.0.8-3.el8, but none of the providers can be installed - package deltarpm-3.6-3.el7.x86_64 requires librpm.so.3()(64bit), but none of the providers can be installed - package deltarpm-3.6-3.el7.x86_64 requires librpmio.so.3()(64bit), but none of the providers can be installed - conflicting requests - problem with installed package deltarpm-3.6-3.el7.x86_64 Problem 2: package python3-rhn-client-tools-2.8.16-13.module_el8.1.0+211+ad6c0bc7.x86_64 requires libgudev, but none of the providers can be installed - package python3-dnf-plugin-spacewalk-2.8.5-11.module_el8.1.0+211+ad6c0bc7.noarch requires python3-rhn-client-tools >= 2.8.4, but none of the providers can be installed - package libgudev-232-4.el8.i686 obsoletes libgudev1 < 230 provided by libgudev1-219-73.el7_8.6.x86_64 - package libgudev-232-4.el8.x86_64 obsoletes libgudev1 < 230 provided by libgudev1-219-73.el7_8.6.x86_64 - package dnf-plugin-spacewalk-2.8.5-11.module_el8.1.0+211+ad6c0bc7.noarch requires python3-dnf-plugin-spacewalk = 2.8.5-11.module_el8.1.0+211+ad6c0bc7, but none of the providers can be installed - package libgudev1-devel-219-73.el7_8.6.x86_64 requires libgudev1 = 219-73.el7_8.6, but none of the providers can be installed - conflicting requests - problem with installed package libgudev1-devel-219-73.el7_8.6.x86_64 Problem 3: package python3-dnf-4.2.7-7.el8_1.noarch requires dnf-data = 4.2.7-7.el8_1, but none of the providers can be installed - package dnf-4.2.7-7.el8_1.noarch requires python3-dnf = 4.2.7-7.el8_1, but none of the providers can be installed - cannot install both dnf-data-4.2.7-7.el8_1.noarch and dnf-data-4.0.9.2-1.el7_6.noarch - package yum-4.2.7-7.el8_1.noarch requires dnf = 4.2.7-7.el8_1, but none of the providers can be installed - package python2-dnf-4.0.9.2-1.el7_6.noarch requires dnf-data = 4.0.9.2-1.el7_6, but none of the providers can be installed - conflicting requests - problem with installed package python2-dnf-4.0.9.2-1.el7_6.noarch Problem 4: problem with installed package ipa-client-4.6.6-11.el7.centos.x86_64 - package ipa-client-4.6.6-11.el7.centos.x86_64 requires libcollection.so.2()(64bit), but none of the providers can be installed - package ipa-client-4.8.0-10.module_el8.1.0+255+aa2bdb39.x86_64 requires libxmlrpc_util.so.4()(64bit), but none of the providers can be installed - cannot install both libcollection-0.7.0-39.el8.x86_64 and libcollection-0.7.0-32.el7.x86_64 - cannot install both xmlrpc-c-1.51.0-5.el8.x86_64 and xmlrpc-c-1.32.5-1905.svn2451.el7.x86_64 - package sssd-kcm-2.2.0-19.el8_1.1.x86_64 requires libcollection.so.4()(64bit), but none of the providers can be installed - package libreport-plugin-mantisbt-2.1.11-53.el7.centos.x86_64 requires libxmlrpc_util.so.3()(64bit), but none of the providers can be installed - conflicting requests - problem with installed package libreport-plugin-mantisbt-2.1.11-53.el7.centos.x86_64 - package ipa-client-4.8.0-11.module_el8.1.0+253+3b90c921.x86_64 is excluded - package ipa-client-4.8.0-13.module_el8.1.0+265+e1e65be4.x86_64 is excluded (try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages) Ideas? -Frank

2 1

CentOS 7 - xfs shrink & expand
by Frank M. Ramaekers Jr. 16 May '20

16 May '20

I'm having some difficulty finding a method to shrink my /home to expand my /. They both correspond to LVMs. It is my understanding that one cannot shrink a xfs filesystem. One must back it up (xfsdump), remove (lvremove) redefine it and then restore it back (xfsrestore). Okay, I'm running into a problem where /home needs to be "unused". If tried going in to "maintance mode", but I ran into a problem with the mount command (after issuing a 'chroot /sysroot'). I then tried using SystemRescueCD to boot to, but it wouldn't mount my 32TB RAID USB drive (something about too big). Any thoughts or suggestions? -Frank

5 8

CentOS 8 latest sssd src RPM
by Juan Jose Villaplana Querol 16 May '20

16 May '20

Hi, I can find latest sssd RPM at http://mirror.centos.org/centos/8.1.1911/BaseOS/x86_64/os/Packages/sssd-2.2…, but I can't find his source RPM at http://vault.centos.org/8.1.1911/BaseOS/Source/SPackages/ ( https://centos.pkgs.org/8/centos-baseos-x86_64/sssd-2.2.0-19.el8_1.1.x86_64… ) Is there something wrong with latest sssd src RPM? I have also noticed that retrieving src rpms via 'dnf download --source' doesn't work with the default CentOS-Sources.repo configuration. This has been reported here: https://bugs.centos.org/view.php?id=17120 Best regards, Juanjo -- Juan José Villaplana Querol/Servei d'Informàtica/Universitat Jaume I

1 0

Create Virtualbox image from running system?
by Frank Cox 16 May '20

16 May '20

I see that Microsoft has a utility that (apparently) can read a running system and create an image that can then be imported and run on Virtualbox. https://docs.microsoft.com/en-us/sysinternals/downloads/disk2vhd "You can even have Disk2vhd create the VHDs on local volumes, even ones being converted (though performance is better when the VHD is on a disk different than ones being converted)." Is there anything that does the same thing for Linux, and can image a system like that while it's actually running? -- Can we uninstall 2020 and install it again? This one has a virus. MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

2 1

Ailing MATE desktop
by Robert G (Doc) Savage 16 May '20

16 May '20

I need some C8 troubleshooting help with MATE. I'm building a ZFS storage server with a SuperMicro H11SSL motherboard, EPYC 7232 CPU, and 32 GB ECC SDRAM. I installed CentOS 8.1.1911 from the iso as soon as it was released. I'm using the on-board ASPEED VGA video. I installed MATE v1.22 from https://copr.fedorainfracloud.org/coprs/stenstorp/MATE/. The following packages are installed: libmateweather-data-1.24.0-2.el8.noarch libmatemixer-1.24.0-1.el8.x86_64 mate-desktop-libs-1.24.0-3.el8.x86_64 mate-terminal-1.24.0-2.el8.x86_64 mate-themes-3.22.21-1.el8.noarch mate-panel-libs-1.22.2-1.el8.x86_64 mate-desktop-1.24.0-3.el8.x86_64 mate-settings-daemon-1.22.1-2.el8.x86_64 mate-polkit-1.24.0-2.el8.x86_64 mate-notification-daemon-1.22.1-1.el8.x86_64 mate-media-1.24.0-2.el8.x86_64 mate-power-manager-1.22.2-1.el8.x86_64 mate-system-log-1.22.2-2.el8.x86_64 libmateweather-1.24.0-2.el8.x86_64 libmatekbd-1.24.0-1.el8.x86_64 mate-utils-common-1.22.2-2.el8.noarch mate-disk-usage-analyzer-1.22.2-2.el8.x86_64 mate-user-guide-1.24.0-1.el8.noarch mate-menus-preferences-category-menu-1.24.0-2.el8.x86_64 mate-dictionary-1.22.2-2.el8.x86_64 mate-menus-1.24.0-2.el8.x86_64 mate-session-manager-1.24.0-1.el8.x86_64 mate-backgrounds-1.24.0-1.el8.noarch mate-search-tool-1.22.2-2.el8.x86_64 mate-panel-1.22.2-1.el8.x86_64 mate-system-monitor-1.24.0-1.el8.x86_64 mate-applets-1.24.0-2.el8.x86_64 mate-control-center-1.22.2-2.el8.x86_64 mate-icon-theme-1.24.0-1.el8.noarch mate-control-center-filesystem-1.22.2-2.el8.x86_64 mate-menus-libs-1.24.0-2.el8.x86_64 mate-user-admin-1.5.1-3.el8.x86_64 mate-calc-1.24.0-2.el8.x86_64 mate-screenshot-1.22.2-2.el8.x86_64 mate-screensaver-1.24.0-2.el8.x86_64 About two weeks ago following a reset, after a normal login an incomplete MATE desktop appeared. The background is black. There is no visible mouse, although there is some ghostly pixel movement in the top toolbar when what should be the mouse cursor floats over each of those toolbar icons. I can hit Enter and start whatever app the ghost cursor is over, and the mouse works only within that app's window. I'm a long-time user of MATE ever since GNOME3 was released, but until now I've never had any problems with it. I have no idea where to start troubleshooting. I've looked in journalctl, systemctl, and dmesg, but found nothing obvious. There's nothing in the MATE wiki to help. I'm open to any suggestions where to start looking. --Doc Savage Fairview Heights, IL

5 10

Can't move to Centos 8
by david 15 May '20

15 May '20

Folks I've been trying to convert my systems to Centos 8, seeing the EOL on the horizon a few years away. One of my systems is a Mac-Mini, and support for that has been discontinued. I'm wondering what the community suggests among these alternatives: 1) Stay with Centos 7 even after EOL hoping market pressures will add Mac-Mini support 2) Spend a few hundred dollars on a small, **quiet** replacement (ugh) 3) Convert to the Debian/Ubuntu distro. 4) Hope someone figures out a solution. By the way, the same issue exists, I believe, also for other Mac products, such as the newer laptops and servers. David

9 9

CentOS 8 Client to Windows file share SSO Active Directory
by DHilsbos＠performair.com 15 May '20

15 May '20

All; My Google foo is failing me, and searching through the last 10 months on this mailing list hasn't helped either. We have an existing Active Directory domain set up, and I'd like to add a CentOS 8 Workstation to it. I have experience using both realmd and manual configuration to allow local login with AD accounts to various Linux distribution, and have this working on my test system. I used realmd this time, and it configured sssd. I have one problem that I've never been able to solve; when I attempt to connect to a remote file server, while logged on to the CentOS 8 system using a domain account, it asks for credentials. Theoretically, this should work as it's just Kerberos. Can anyone point me at resources on what is needed for SSO to domain resources to work properly? This may be related to another issue that I'm seeing; I don't see the CentOS 8 user logon event (event ID 4624) on the Domain Controller. I see lots of logon events for the computer account, but none for the user account. Thank you, Dominic L. Hilsbos, MBA Director - Information Technology Perform Air International Inc. DHilsbos(a)PerformAir.com www.PerformAir.com

2 1

Re: [CentOS] Can't move to Centos 8
by Mauricio Tavares 15 May '20

15 May '20

On Thu, May 14, 2020 at 1:46 AM Kenneth Porter <shiva(a)sewingwitch.com> wrote: > > --On Wednesday, May 13, 2020 8:22 PM -0400 Mauricio Tavares > <raubvogel(a)gmail.com> wrote: > > > 1) Have you considered moving the storage business to another host so > > not to have a single point of failure? > > 2) Would a $60 Raspberry Pi 4GB be a good replacement? 2 USB3 ports > > and 1 GB ether port. My Synology storage appliance thingie is much > > dumber than that and has not missed a beat in years. > > I'm using CentOS 7 and 8 for internal servers but use OpenWrt on a consumer > router to do the fancy traffic balancing with the "cake" traffic control > module, something the old kernel in CentOS 7 lacks. > Funny you mentioned the OpenWrt: I have been using one as access point and realized I not only forgot how to but cannot find info (I remember seeing it years ago) on how to run the 2.4 and 5GHz as separate networks. Well, I can't even get the internal dhcp to work, having to forward all that to my bind/dhcp vm guest. Shame on me, as if I get that working I can then think on putting a vpn between wireless and internal networks which is something I really should be doing. > I'm running an email server with Dovecot IMAP, Spamassassin, and ClamAV and > that's a bit of a load so I suspect a Pi would be underpowered for that. > I really think it depends on the load, and only you have access to the performance info to answer that. There are people running all that in docker containers (I could swear I read about an "official" or "officially blessed" postfix container in the postfix mailing list).

2 1

How to Load Custom CentOS 7 Image
by Xinhuan Zheng 14 May '20

14 May '20

Dear All, I want to create a CentOS 7 VMWARE VM. I need to install various Runtime libraries, e.g., Tomcat, into the VM. Once all looks good, then I want to make a Custom Image of the entire VM. Later I want to load this Custom Image to a physical HW, so that I don’t need to go through all kinds Runtime installation. Does anyone know how to handle creating a Custom Image and Load to physical HW process? How does boot loader work when VM vs Physical HW has different devices? Thank you, - Xinhuan

2 1

Default ACL inheritance question
by James Pearson 14 May '20

14 May '20

A bit of a minor off-topic issue, but on the off-chance that someone understands how ACLs work ... I've been trying to see if using default ACLs would help with the following issue: I have a third party application that is running as a non-root user ('user-a') and creating log files with mode 0600 (read/write only to the owner) in a log directory I have another application that runs as another non-root user ('user-b') that needs to read the log files created by 'user-a' I can't change the mode of the log files generated by 'user-a', but I thought I could add a default ACL to the log file's parent directory that gave read access to 'user-b' - i.e. something like: % sudo setfacl -d -m u:user-b:r logdir % getfacl logdir # file: logdir # owner: user-a # group: user-a user::rwx group::r-x other::r-x default:user::rwx default:user:user-b:r-- default:group::rwx default:mask::rwx default:other::r-x Now when new log files are created in logdir, the default ACL is inherited, but 'user-b' still can't read the files - i.e. % getfacl logdir/logfile # file: logdir/logfile # owner: user-a # group: user-a user::rw- user:user-b:r-- #effective:--- group::rwx #effective:--- mask::--- other::--- i.e. the effective access for 'user-b' is '---' - which is no access to read for 'user-b' I'm not sure where 'effective' comes from? If I now explicitly add a read ACL for user-b to logdir/logfile: % sudo setfacl -m u:user-b:r logdir/logfile % getfacl logdir/logfile # file: logdir/logfile # owner: user-a # group: user-a user::rw- user:user-b:r-- group::rwx mask::rwx other::--- and 'user-b' can read logdir/logfile I guess I'm missing something on how default ACLs are meant to work - can anyone explain what is happening here or point me in the right direction ? I've actually 'solved' the issue with a suitable sudoers rule that allows 'user-b' to run the required command as 'user-a', but I would like to find out why this default ACL method doesn't work Thanks James Pearson

2 2

CentOS 8 updates
by Bill Maidment 13 May '20

13 May '20

Hi Is it my imagination/impatience, but I don't seem to have received any updates to CentOS 8 recently. I'm thinking particularly of firefox which was updated in CentOS 7 for a critical security update. Is there a backlog of CentOS 8 updates behind the 8.2 release? I noticed on a few occasions that my local mirroring had picked up and later deleted a lot of "tmp" files for CentOS 8, is that an indication that something is on the way? I understand that everyone is struggling with Covid19 restrictions, so just tell me to get back into my isolation if I'm just a bit too impatient. -- Cheers Bill

3 2

How to get CentOS 8 on AWS
by Thomas Stephen Lee 13 May '20

13 May '20

Hi, I am user of CentOS 8. When can we expect an image on AWS? I am just learning AWS and would like to use CentOS 8 for that. thanks --- Lee

3 3

Jitsi Meet on CentOS 7 ?
by Nicolas Kovacs 13 May '20

13 May '20

Hi, Anyone here managed to run Jitsi Meet on a CentOS 7 server ? As far as I can tell, it's one of the nicer open source videoconferencing solutions out there. I gave it a spin on https://suricate.tv and now I'd like to install it on one of my servers. Unfortunately the Jitsi developers only provide documentation for Debian/Ubuntu. Well, there is some sort of guide for CentOS around. As far as I can tell, the purpose of this guide is to encourage CentOS users to switch to Debian/Ubuntu. :o) Anyway, if you have a pointer to some comprehensible docs, I'd be grateful. Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12

5 12

Monitoring network traffic to a host
by Ian Pilcher 13 May '20

13 May '20

Background - I am having an issue with occassional pauses when streaming high-bitrate media across my home network to my smart TV. I *suspect* that the root cause is the (incredibly lame) 100 Mbps Ethernet interface in the TV. In order to confirm that the peak bitrate really does max out the 100 Mbps connection, I'd like to monitor the communication between my NAS and the TV. The two devices are on separate VLANs, with routing performed by a CentOS 7 system, so it should theoretically be relatively simple to use an appropriate utility on the "router" to monitor and, if possible, graph the network traffic going to the TV. Ideally, I could run said utility for the entire time that the media file is playing and then look at its pretty graph to check if/when the bitrate hit 100 Mbps. Being able to watch the pretty graph in real time through a web interface would be nice as well, but is not required. Is any such program included in CentOS 7 or EPEL 7? The closest thing that I've found thus far is iftop (despite its lack of pretty). Unfortunately, it won't allow me to see the peak bitrate over the whole period in which the media is playing. Thanks for any suggestions! -- ======================================================================== In Soviet Russia, Google searches you! ========================================================================

3 3

xvidtune powertools CentOS 8
by Jerry Geis 13 May '20

13 May '20

Hi All - I was looking all over for xvidtune on Centos 8. could not find it. tried yum provides "*/xvidtune" tried yum search xvidtune Google pointed me to: https://centos.pkgs.org/8/centos-powertools-x86_64/xorg-x11-apps-7.7-21.el8… So I installed the apps and of course xvidtune is part of that. However just curious why the provides or search did not point me there ? Should it have? Thanks, Jerry

2 1

CentOS 7 disable the the hot corner
by Jerry Geis 12 May '20

12 May '20

I have loaded the gnome-shell-extension-no-hot-corner-3.28.1-11.el7.noarch and also the gnome-tweaks. When I run gnome-tweaks no where in there do I find the disable hot corner. where is that ? Its annoying when the mouse goes to the upper left and all the windows shrink. I wish to disable it. Thanks. Jerry

2 1

no images from www.imdb.com
by Michael Hennebry 12 May '20

12 May '20

For some reason, I no longer seem to get images from www.imdb.com , i.e. Internet Movie DataBase. The effect is really weird. I get from Firefox, Konqueror and Chromium. I'm running Centos 7. It's been happening for a few months now, so I really cannot tell what changed that mioght have caused it. How do I debug and fix this? Chromium still asks me for passwords a lot. I expect that is a separate issue. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

3 3

XFS problem
by Gestió Servidors 11 May '20

11 May '20

Hello, My server is running kernel 3.10.0-1062.12.1 in a CentOS Linux release 7.7.1908. Since some weeks ago, server is restarting after XFS errors. Logs in /var/crash reported this information: [...] [443804.295916] sd 0:0:0:0: [sda] FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK [443804.295919] sd 0:0:0:0: [sda] CDB: Read(10) 28 00 04 53 e8 b0 00 00 28 00 [443804.295922] blk_update_request: I/O error, dev sda, sector 72607920 [443804.295969] sd 0:0:0:0: rejecting I/O to offline device [443804.296245] sd 0:0:0:0: rejecting I/O to offline device [443804.296288] systemd-journal[946]: segfault at 55f73081c820 ip 000055f73081c820 sp 00007fffb3c0f558 error 15 [443804.321330] sd 0:0:1:0: [sdb] tag#35 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_TIMEOUT [443804.321335] sd 0:0:1:0: [sdb] tag#35 CDB: Write(16) 8a 00 00 00 00 02 67 e3 f5 f8 00 00 02 00 00 00 [443804.321338] blk_update_request: I/O error, dev sdb, sector 10332927480 [443804.321376] sd 0:0:0:0: rejecting I/O to offline device [443804.321384] XFS (dm-2): metadata I/O error: block 0xf00001 ("xfs_trans_read_buf_map") error 5 numblks 1 [443804.321390] XFS (dm-2): xfs_do_force_shutdown(0x1) called from line 239 of file fs/xfs/libxfs/xfs_defer.c. Return address = 0xffffffffc073a90b [443804.321421] sd 0:0:0:0: rejecting I/O to offline device [443804.321431] XFS (dm-2): metadata I/O error: block 0x1e04cee ("xlog_iodone") error 5 numblks 64 [443804.321433] XFS (dm-2): xfs_do_force_shutdown(0x2) called from line 1238 of file fs/xfs/xfs_log.c. Return address = 0xffffffffc077b210 [443804.321442] XFS (dm-2): Log I/O Error Detected. Shutting down filesystem [443804.321443] XFS (dm-2): Please umount the filesystem and rectify the problem(s) [443804.351688] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [...] It seems problem are hard disk or XFS module, but physical RAID controller reports all hard disks are OK, so I suppose problem is XFS module. Also, I have read in this forum (https://bugs.centos.org/view.php?id=16960) something similar. Could someone say me is lastest kernel version for CentOS-7 (3.10.0-1127) solves this problem? Thanks.

2 1

CentOS 8 installer bug
by isdtor 11 May '20

11 May '20

CentOS 8.1.1911 has a bug in the installer. It is not possible to use more than one NFS repo via kickstart repo directive as the installer tries to mount all of them on /run/install/.nfs. You get this DBG payload: /run/install/.nfs already has something mounted on it message for all but the first one. The problem was reported for Fedora 29/30. https://bugzilla.redhat.com/show_bug.cgi?id=1669711 Do we know if this is fixed in RHEL 8.2?

1 0

DND Issues in Gnome (GTK3 regression)
by Leon Fauster 11 May '20

11 May '20

Does someone uses EL8 as a workstation (GUI) here? This bug is super annoying https://bugzilla.redhat.com/show_bug.cgi?id=1808900 and it seems not to get addressed in the current branch. How could a developer work with a forced delay in the UI (since a year now). Solution maybe in 8.3 ETA end of the year? Seems that all RH employees uses OSX as workstation (my impression of the summit) :-) This bug is located in gtk3 and should also hit non-GNOME users. Am I the only one here? Is CentOS Stream the workplace to address this bug? -- Leon

2 1

FAX
by Mark LaPierre 11 May '20

11 May '20

Hey All, Has anyone out there figured out how to send a FAX from a computer, sans FAX machine? -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

3 2

Zoom....
by mark 10 May '20

10 May '20

Hi, folks, Updated CentOS 7 the other day. Updated zoom last night. Ancient (15 yr old) USB camera, Logitech QuickCam Express. If I run LD_PRELOAD=/usr/lib64/libv4l/v4l2convert.so cheese, I get video. Zoom, with or without the LD_PRELOAD - no video. I've tried stracing zoom, and created a file /etc/ld.so.preload, with the contents of /usr/lib64/libv4l/v4l2convert.so, and in strace, I see it loading it, but still no video. Anyone got any clues? Being a free end user, all zoom offers is the knowledge base.... mark

7 12

discord: things to do to run it.
by mark 10 May '20

10 May '20

Hi, folks, Installed discord last night, everything, including video worked, but not voice. As usual, I logged out last night before bed, and voice seems to work. Used the tgz, of course. HOWEVER, note that you *do* need to install libatomic for it to work properly, otherwise when it comes up, it says "the installation is corrupt", and the only button there, for help, is *ONLY* for Windows. I found through searching that it did need this. Install that, and no error message. mark

1 0

CentOS8 and proftpd with quota file module enable
by Dario Lesca 10 May '20

10 May '20

Hi, someone can help me on this follow problem? I have also write to proftpd ML and if someone give me some suggest I let you know. Many thanks for your reply. Dario ------- Messaggio inoltrato ------- Da: Dario Lesca <d.lesca(a)solinos.it> Rispondi a: proftp-user(a)lists.sourceforge.net A: proftp-user(a)lists.sourceforge.net Oggetto: [Proftpd-user] proftpd-1.3.6c on centos8: When mod_quotatab_file is enable, the get command give "get: Access failed: 550 aa.sh: No such file or directory" Data: Sat, 09 May 2020 11:51:00 +0200 Hello every body! this is my first post on this ML I have install (via dnf) and configure proftpd-1.3.6c on centos 8.1 up to date without modify the basic configuration file and add my modules configuration file under include folder /etc/proftpd/conf.d/ Then I have enable the mod_quotatab_file, configure it and initialize the Quota*Table file QuotaLimitTable file:/etc/proftpd/ftpquota.limittab QuotaTallyTable file:/etc/proftpd/ftpquota.tallytab All work fine except get command, when I try get a existent file uploaded, i obtain this error: "get: Access failed: 550 aa.sh: No such file or directory" The aa.sh file exist and it have the right access, see this example session: $ lftp -uftpste:mypass ftp://localhost -e 'site quota;ls aa.sh;lcd /tmp;get aa.sh;exit' 200-The current quota for this session are [current/limit]: Name: ftpste Quota Type: User Per Session: False Limit Type: Hard Uploaded Mb: 0.69/5000.00 Downloaded Mb: unlimited Transferred Mb: unlimited Uploaded files: unlimited Downloaded files: unlimited Transferred files: unlimited 200 Please contact root@localhost if these entries are inaccurate -rw-r--r-- 1 ftpste gftpste 33 Dec 3 14:31 aa.sh lcd ok, local cwd=/tmp get: Access failed: 550 aa.sh: No such file or directory I have investigate with debug enable and "strace -p" during get session and I have realize that when this modules is enable (if it's disable get work fine), the file is searched under / (/aa.sh) rather than into folder in which it is located: theuser's home in this case lstat("/aa.sh", 0x7ffe6dce9ed0) = -1 ENOENT (No such file or directory) If I create a empty file under / (touch /aa.sh) the get command work and the file obtained is the right file present into home folder. Is this a bug or there is some misconfiguration in my files? Many thanks for reply. -- Dario Lesca (inviato dal mio Linux Fedora 32 Workstation) _______________________________________________ ProFTPD Users List <proftpd-users(a)proftpd.org> Unsubscribe problems? http://www.proftpd.org/list-unsub.html -- Dario Lesca (inviato dal mio Linux Fedora 32 Workstation)

1 0

CentOS 8 CD Ripper
by Mark LaPierre 10 May '20

10 May '20

Hey all, Does anyone know of a CD ripper that will work with CentOS 8? I've found a great many that will work CentOS 6 and 7 but nothing that will build for CentOS 8. -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

4 5

CentOS 7, zoom, and discord... konqueror
by mark 10 May '20

10 May '20

Firerox is my default browser, but both zoom and Discord pull up konqueror. Any idea why? mark

1 0

CentOS 8 and xvidtune and Nouveau
by Jerry Geis 09 May '20

09 May '20

I have an old laptop W530 I put CentOS 8 on. I was trying to install xvidtune - seems to not be available ? Thought that was part of X. Also trying to get Nouveau to be a higher resolution than 1024x768. I found the wiki, but adding video= to the kernel command line and regen grub did not do anything. Other documentation there seemed OLD. Anyone know how to correctly get Nouveau in 1920x1080? Thanks, Jerry

2 2

CentOS 8 installation
by isdtor 08 May '20

08 May '20

Are there still a lot of rough edges in this area? There are some things I simply can't get to work. This is about kickstart installations. Finding the right stuff for the %packages sections is lucky dip at best. The RHEL manual points to the comps file, really? This file isn't meant to be parsed by humans. Specifying an environment - the example "Infrastructure Server" doesn't exist. Is this one of the areas where CentOS deviates from RHEL? I did find server-product-environment, custom-environment, minimal-environment. I followed the link in the documentation to the kickstart file generator. The generated file isn't usable as is, specifically the %packages section - anaconda says there is no group dns-server, for instance. Which dnf later confirms. The group list in dnf also seems to be a lot shorter than it used to be under 7? Specifying %packages --multilib, this is where it breaks down completely. For the chosen group/package mix, which works perfectly without multilib, anaconda complains about conflicts for files provided by both the i686 and the x86_64 version of, in this case, gdb-headless and sssd-common. Attempting to fix this with -gdb-headless.i686 -sssd-common.i686 fails, these lines are being ignored. Excluding gdb-headless altogether fails also because the main gdb package pulls it in. Honestly, I'm not sure where to go from here.

2 3

libQt5Core.so ver 5.12
by cristiantorres110＠hotmail.com 08 May '20

08 May '20

Hello, For the last few days, 'dnf upgrade' on my Centos 8 installation has been showing problems saying that it cannot install the best update candidates for packages (kf5-*) because nothing provides libQtCore.so.5(Qt_5.12). My system shows that it presently has libQtCore.so.5(Qt_5.11). I've been keeping the system up to date using the --nobest option in dnf. I could download 'libqt5-core-5.12.8-alt3.x86_64.rpm ' from here and install it but I haven't dared to try. Is there an expectation for when version Qt_5.12 will be in the official repos? BR --Cristian

2 2

Chrony
by Jerry Geis 08 May '20

08 May '20

I just happened to notice this morning in /var/log/messages: chronyd[1299]: Selected source 207.244.103.95 host 207.244.103.95 95.103.244.207.in-addr.arpa domain name pointer dns-e.wdc-us.hosts.301-moved.de. Just curious why my machine in Indiana (USA) is asking for time in Germany. Wouldn't it use something closer ? Thanks, jerry

2 1

video problems
by mark 07 May '20

07 May '20

I've got an ancient USB videocam (QuickCam Express, yes, 15 years old). I got it working under C7, after I removed the default loaded gspca_spca561, and replaced it with the previous driver, gspca_spca508. It also needed zc3xx. Then I updated and rebooted my system a couple of days ago, and now no /dev/video, no errors.... Any clues? mark "other than waiting for a camera to arrive from China somewhere in June or July?"

1 2

repomd.xml.asc BAD signature in CentOS-7-x86_64-Minimal-2003.iso
by Pany 07 May '20

07 May '20

Hi list, I downloaded the CentOS-7-x86_64-Minimal-2003.iso ( sha256sum 659691c28a0e672558b003d223f83938f254b39875ee7559d1a4a14c79173193 ) and mount it on /mnt Unfortunately, It returned "BAD signature" when I verified the repodata/repomd.xml.asc So should I continue to use this ISO? Below is my procedure: # gpg --import /mnt/RPM-GPG-KEY-CentOS-7 gpg: key F4A80EB5: public key "CentOS-7 Key (CentOS 7 Official Signing Key) <security(a)centos.org>" imported gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1) # gpg --fingerprint /root/.gnupg/pubring.gpg ------------------------ pub 4096R/F4A80EB5 2014-06-23 Key fingerprint = 6341 AB27 53D7 8A78 A7C2 7BB1 24C6 A8A7 F4A8 0EB5 uid CentOS-7 Key (CentOS 7 Official Signing Key) <security(a)centos.org> # gpg --verify /mnt/repodata/repomd.xml.asc gpg: Signature made Wed 22 Apr 2020 07:37:54 AM CST using RSA key ID F4A80EB5 gpg: BAD signature from "CentOS-7 Key (CentOS 7 Official Signing Key) <security(a)centos.org>"

1 0

du hung, wild display in ps
by Fred Smith 07 May '20

07 May '20

Hi! On Centos-7: $ cat /etc/centos-release CentOS Linux release 7.8.2003 (Core) Was running du to examine the sizes of my backups and found du hung, running "ps -eLf /mnt/backup/backups" shows this: # ps -eLf | grep du root 1185 1 1185 0 1 May01 ? 00:00:00 /usr/bin/abrt-watch-log -F Backtrace /var/log/Xorg.0.log -- /usr/bin/abrt-dump-xorg -xD root 1281 1 1281 0 1 May01 ? 00:00:01 /usr/bin/abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detected ernel BUG at list_del corruption list_add corruption do_IRQ: stack overflow: ear stack overflow (cur: eneral protection fault nable to handle kernel ouble fault: RTNL: assertion failed eek! page_mapcount(page) went negative! adness at NETDEV WATCHDOG ysctl table check failed : nobody cared IRQ handler type mismatch Kernel panic - not syncing: Machine Check Exception: Machine check events logged divide error: bounds: coprocessor segment overrun: invalid TSS: segment not present: invalid opcode: alignment check: stack segment: fpu exception: simd exception: iret exception: /var/log/messages -- /usr/bin/abrt-dump-oops -xtD root 11090 1 11090 11 1 15:08 pts/1 00:01:10 du -s /mnt/backup/backups even after killing the du. there were two DUs shown, I killed the parent (presumably the one I started) but the one that remains seems to be un-killable. This is what the output looked like before I killed du: # ps -eLf | grep du root 1185 1 1185 0 1 May01 ? 00:00:00 /usr/bin/abrt-watch-log -F Backtrace /var/log/Xorg.0.log -- /usr/bin/abrt-dump-xorg -xD root 1281 1 1281 0 1 May01 ? 00:00:01 /usr/bin/abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detected ernel BUG at list_del corruption list_add corruption do_IRQ: stack overflow: ear stack overflow (cur: eneral protection fault nable to handle kernel ouble fault: RTNL: assertion failed eek! page_mapcount(page) went negative! adness at NETDEV WATCHDOG ysctl table check failed : nobody cared IRQ handler type mismatch Kernel panic - not syncing: Machine Check Exception: Machine check events logged divide error: bounds: coprocessor segment overrun: invalid TSS: segment not present: invalid opcode: alignment check: stack segment: fpu exception: simd exception: iret exception: /var/log/messages -- /usr/bin/abrt-dump-oops -xtD root 11078 18627 11078 0 1 15:08 pts/1 00:00:00 sudo du -s /mnt/backup/backups root 11090 11078 11090 12 1 15:08 pts/1 00:01:10 du -s /mnt/backup/backups root 12125 19449 12125 0 1 15:17 pts/0 00:00:00 grep --color=auto du Oh, and I never did get the du out put I expected. Anyone got a clue? Thanks in advance! Fred -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- "For the word of God is living and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart." ---------------------------- Hebrews 4:12 (niv) ------------------------------

2 2

Odd permissions
by mark 07 May '20

07 May '20

I've posted a couple times in the last month, that for some reason, since I rebuilt to CentOS 7 from 6 (same home directory, another partition, of course), when I log out, it restarts with me logged in, and only the second time I log out does it actually log me out. Still debugging that. I have logged in as root, and don't have the problem, so I'm assuming that it's something incompatible, or somehow mis-set in ~/.<whatever>. Looking in ~/.cache, I found something weird: ~/.cache/gnome-control-center, which had permissions of d-w-rwxr-T Say *what*? Anyone got a clue as to why? And while I'm looking for clues, does anyone have any thoughts as to where my issue might lie? mark

2 1

rpm command option
by Chris Olson 06 May '20

06 May '20

We located an application recommended by one of customers for sharing certain data. It was available for installation using a few different methods. Using yum was also recommended for the installation. The install instructions began with what appeared to be a fairly typical command as indicated below (with the URL slightly altered). sudo rpm --import https://rpm.xxxxx.com/rpmrepo.key To our junior employee assigned to perform the install on a test system, it seemed like a good idea to do some checking on the rpm option --import indicated in those instructions. They did not find the --import in any of the 14 pages of the CentOS 7 man page for rpm. Some Google searches indicated that the --import option does exist. The repo setup and application installation all went well and took only about three minutes. The app is also working as intended. Is there some good reason for --import being left out of the manual page?

5 4

Custom ISO
by Jerry Geis 06 May '20

06 May '20

Hi All, I am trying to make a customer ISO. When I run this command: mkisofs -o $DESTINATION_FILE -b isolinux/isolinux.bin -c boot.cat \ -no-emul-boot -boot-info-table \ -V "$NAME" -boot-load-size 4 -boot-info-table -R -J -v -T \ -eltorito-alt-boot -e images/efiboot.img \ $DESTINATION_DIR it tells me: Size of boot image is 4 sectors -> No emulation Size of boot image is 17408 sectors -> genisoimage: Error - boot image 'images/efiboot.img' has not an allowable size. This is the exact same file that is on the Everything ISO image. What am I missing ? I also want to make the ISO boot with UEFI. I think I have the right parameters but getting this error. Thoughts? Thanks, Jerry

3 6

Samba update to 4.10 (with c7.8) - broken -?
by lejeczek 05 May '20

05 May '20

hi guys I've just let the system to get big update to 7.8 and with it came new Samba(4.10.4-10.el7.x86_64), a version with now fails on my boxes for no apparent reasons. My Samba uses LDAP backend but I can see no errors related to that neither. ... [2020/05/05 15:53:37.093041, 0] ../../lib/util/become_daemon.c:136(daemon_ready) daemon_ready: daemon 'smbd' finished starting up and ready to serve connections [2020/05/05 15:53:37.106797, 2] ../../source3/smbd/server.c:1415(smbd_parent_loop) waiting for connections [2020/05/05 15:53:37.108770, 3] ../../source3/smbd/server_exit.c:236(exit_server_common) Server exit (termination signal) Failed to start Samba SMB Daemon. Unit smb-ccnr-biotec.service entered failed state. smb-ccnr-biotec.service failed. Are you seeing anything weir with your Sambas? many thanks, L.

1 1

Understanding VDO vs ZFS
by david 04 May '20

04 May '20

Folks I'm looking for a solution for backups because ZFS has failed on me too many times. In my environment, I have a large amount of data (around 2tb) that I periodically back up. I keep the last 5 "snapshots". I use rsync so that when I overwrite the oldest backup, most of the data is already there and the backup completes quickly, because only a small number of files have actually changed. Because of this low change rate, I have used ZFS with its deduplication feature to store the data. I started using a Centos-6 installation, and upgraded years ago to Centos7. Centos 8 is on my agenda. However, I've had several data-loss events with ZFS where because of a combination of errors and/or mistakes, the entire store was lost. I've also noticed that ZFS is maintained separately from Centos. At this moment, the Centos 8 update causes ZFS to fail. Looking for an alternate, I'm trying VDO. In the VDO installation, I created a logical volume containing two hard-drives, and defined VDO on top of that logical volume. It appears to be running, yet I find the deduplication numbers don't pass the smell test. I would expect that if the logical volume contains three copies of essentially identical data, I should see deduplication numbers close to 3.00, but instead I'm seeing numbers like 1.15. I compute the compression number as follows: Use df and extract the value for "1k blocks used" from the third column use vdostats --verbose and extract the number titled "1K-blocks used" Divide the first by the second. Can you provide any advice on my use of ZFS or VDO without telling me that I should be doing backups differently? Thanks David

8 10

perl Net::Interface module on CentOS 8
by sthustfo 04 May '20

04 May '20

We have received a perl program that makes use of "Net::Interface" module which I am trying to run on CentOS 8. However, running into issues as this module is not found. use Net::Interface; I could use cpan to install the same, but currently using the rpm packages for all the needs. Any idea which rpm package provides this perl module? Thanks.

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Re: [CentOS] Understanding VDO vs ZFS
by david 03 May '20

03 May '20

0At 08:07 PM 5/2/2020, you wrote: >My two cents: >1- Do you have an encrypted filesystem on top of VDO? If yes, you will see >no benefit from dedupe. >2- can you post the stats of vdostats verbose /dev/mapper/xxxxx (replace >with your device) > >you can do something like: "vdostats -verbose /dev/mapper/xxxxxxxx | grep >-B6 'save percentage' > > > > >On Sat, May 2, 2020 at 9:54 PM david <david(a)daku.org> wrote: > > > Folks > > > > I'm looking for a solution for backups because ZFS has failed on me > > too many times. In my environment, I have a large amount of data > > <snip> BTW: I think the 'saving percent' of 13 is consistent with my computation of 1.16 if one takes into account the overhead blocks. Is that true?

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systemctl restart changes permission.
by Kaushal Shriyan 02 May '20

02 May '20

Hi, I am running CentOS Linux release 7.8.2003 (Core) with php72u-fpm-7.2.30-1.el7.ius.x86_64 version. I am facing the below permission denied issue. I also did the below steps #cd /run #chown -Rc nginx.nginx php-fpm changed ownership of ‘php-fpm/php-fpm.pid’ from root:root to nginx:nginx changed ownership of ‘php-fpm’ from root:root to nginx:nginx #systemctl restart php-fpm again changes it from nginx.nginx to root.root user. nginx error logs > 2020/04/30 03:09:28 [crit] 17175#0: *154570 connect() to > unix:/run/php-fpm/www.sock failed (13: *Permission denied*) while > connecting to upstream, client: 49.207.54.161, server: _, request: "GET / > HTTP/1.1", upstream: "fastcgi://unix:/run/php-fpm/www.sock:", host: > "35.128.212.112" > 2020/04/30 03:09:28 [error] 17175#0: *154570 open() > "/var/www/drupal/web/50x.html" failed (2: No such file or directory), > client: 49.207.54.161, server: _, request: "GET / HTTP/1.1", upstream: > "fastcgi://unix:/run/php-fpm/www.sock", host: "35.128.212.112" > 2020/04/30 03:09:35 [crit] 17176#0: *154573 connect() to > unix:/run/php-fpm/www.sock failed (13: Permission denied) while connecting > to upstream, client: 49.207.54.161, server: _, request: "GET / HTTP/1.1", > upstream: "fastcgi://unix:/run/php-fpm/www.sock:", host: "35.128.212.112" > 2020/04/30 03:09:35 [error] 17176#0: *154573 open() > "/var/www/drupal/web/50x.html" failed (2: No such file or directory), > client: 49.207.54.161, server: _, request: "GET / HTTP/1.1", upstream: > "fastcgi://unix:/run/php-fpm/www.sock", host: "35.128.212.112" > 2020/04/30 03:09:49 [crit] 17175#0: *154575 connect() to > unix:/run/php-fpm/www.sock failed (13: Permission denied) while connecting > to upstream, client: 14.98.153.6, server: _, request: "GET / HTTP/1.1", > upstream: "fastcgi://unix:/run/php-fpm/www.sock:", host: "35.128.212.112" > 2020/04/30 03:09:49 [error] 17175#0: *154575 open() > "/var/www/drupal/web/50x.html" failed (2: No such file or directory), > client: 14.98.153.6, server: _, request: "GET / HTTP/1.1", upstream: > "fastcgi://unix:/run/php-fpm/www.sock", host: "35.128.212.112" > 2020/04/30 03:09:50 [crit] 17175#0: *154575 connect() to > unix:/run/php-fpm/www.sock failed (13: Permission denied) while connecting > to upstream, client: 14.98.153.6, server: _, request: "GET / HTTP/1.1", > upstream: "fastcgi://unix:/run/php-fpm/www.sock:", host: "35.128.212.112" > 2020/04/30 03:09:50 [error] 17175#0: *154575 open() > "/var/www/drupal/web/50x.html" failed (2: No such file or directory), > client: 14.98.153.6, server: _, request: "GET / HTTP/1.1", upstream: > "fastcgi://unix:/run/php-fpm/www.sock", host: "35.128.212.112" > 2020/04/30 03:10:46 [crit] 17176#0: *154578 connect() to > unix:/run/php-fpm/www.sock failed (13: Permission denied) while connecting > to upstream, client: 184.22.107.148, server: _, request: "GET / HTTP/1.1", > upstream: "fastcgi://unix:/run/php-fpm/www.sock:", host: "35.128.212.112" > 2020/04/30 03:10:46 [error] 17176#0: *154578 open() > "/var/www/drupal/web/50x.html" failed (2: No such file or directory), > client: 184.22.107.148, server: _, request: "GET / HTTP/1.1", upstream: > "fastcgi://unix:/run/php-fpm/www.sock", host: "35.128.212.112" Please let me know if you need any additional information. Thanks in Advance. Best Regards, Kaushal

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fcitx and switching between keyboards
by H 01 May '20

01 May '20

This is an old issue for me running CentOS 7, latest update. I am using fcitx to switch between keyboards, two western ones and Chinese pinyin keyboard. Ever since I installed CentOS 7 over two years ago, I have been unable to resolve issues where I can maintain keyboard setting within one application, notably chromium, and/or between applications. fcitx has a setting for allowing the keyboard choice to remain across applications but it does not work - so far. Further, in chromium, even when within an IME, every time I hit ENTER, the keyboard resets back to the default (EN_US). Needless to say, this makes for some very tedious typing using an alternative keyboard. I do not have this problem remaining within a single IME in Thunderbird, nor in Firefox, nor in LibreOffice. I can switch back and forth between one of these apps and the keyboard switches back to what I last used in that app when switching back to the app - /provided I have used Chinese/. It does not work when I use different western keyboards in the various apps. Is anyone using fcitx switching between different keyboards and can confirm the above - or refute it?

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dhcpd: Not searching LDAP
by Frank Cox 01 May '20

01 May '20

Whenever my dhcp server is restarted it always puts this entry into /var/log/messages: dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file This isn't earth-shattering news since I don't have a ldap server and there's no mention of ldap in /etc/dhcp/dhcpd.conf either. So is this an error message? If it's just an informational message then that's one thing, but if it's an error message then what's the problem that it's telling me about and how do I solve it? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

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