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glib update problems
by Jason Welsh 20 Sep '17

20 Sep '17

any idea how to get out of this pickle? [root@oem /home/jason]$yum update glibc Loaded plugins: product-id, rhnplugin, search-disabled-repos, security This system is receiving updates from RHN Classic or Red Hat Satellite. Setting up Update Process Resolving Dependencies --> Running transaction check ---> Package glibc.x86_64 0:2.12-1.209.el6_9.1 will be updated ---> Package glibc.x86_64 0:2.12-1.209.el6_9.2 will be an update --> Processing Dependency: glibc-common = 2.12-1.209.el6_9.2 for package: glibc-2.12-1.209.el6_9.2.x86_64 --> Running transaction check ---> Package glibc-common.x86_64 0:2.12-1.209.el6_9.1 will be updated --> Processing Dependency: glibc-common = 2.12-1.209.el6_9.1 for package: glibc-2.12-1.209.el6_9.1.i686 ---> Package glibc-common.x86_64 0:2.12-1.209.el6_9.2 will be an update --> Finished Dependency Resolution Error: Package: glibc-2.12-1.209.el6_9.1.i686 (@rhel-6-server-rpms) Requires: glibc-common = 2.12-1.209.el6_9.1 Removing: glibc-common-2.12-1.209.el6_9.1.x86_64 (@rhel-6-server-rpms) glibc-common = 2.12-1.209.el6_9.1 Updated By: glibc-common-2.12-1.209.el6_9.2.x86_64 (rhel6xbase) glibc-common = 2.12-1.209.el6_9.2 Available: glibc-common-2.12-1.166.el6_7.8.x86_64 (rhel6xupdates) glibc-common = 2.12-1.166.el6_7.8 ********************************************************************** yum can be configured to try to resolve such errors by temporarily enabling disabled repos and searching for missing dependencies. To enable this functionality please set 'notify_only=0' in /etc/yum/pluginconf.d/search-disabled-repos.conf ********************************************************************** Error: Package: glibc-2.12-1.209.el6_9.1.i686 (@rhel-6-server-rpms) Requires: glibc-common = 2.12-1.209.el6_9.1 Removing: glibc-common-2.12-1.209.el6_9.1.x86_64 (@rhel-6-server-rpms) glibc-common = 2.12-1.209.el6_9.1 Updated By: glibc-common-2.12-1.209.el6_9.2.x86_64 (rhel6xbase) glibc-common = 2.12-1.209.el6_9.2 Available: glibc-common-2.12-1.166.el6_7.8.x86_64 (rhel6xupdates) glibc-common = 2.12-1.166.el6_7.8 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest [root@oem /home/jason]$ Jason --

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Re: [CentOS] Block internet access for some users on the LAN ?
by James B. Byrne 20 Sep '17

20 Sep '17

On Monday, September 18, 2017 1:04 PM, Nicolas Kovacs wrote" > > This year the school's director wants to completely block Internet > access for all the student's personal devices. > The silent premise in this request is that all student Internet access occurs through the school's gateway. Which is of course false. If the objective is to prevent misuse of school resources for non-education purposes then the premise, while faulty, is fine. If the objective is to restrict students' Internet access in its entirety then this is doomed to fail. Have you clarified with the director that only access through your gateway can be affected by this policy and that student devices with cellular data plans will still have access? -- *** 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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CentOS, PHP & OwnCloud/Nextcloud: the version dilemma
by Nicolas Kovacs 20 Sep '17

20 Sep '17

Hi, I'm currently experimenting with OwnCloud and Nextcloud on a sandbox CentOS 7 server. I've been using OwnCloud for the last two years for my own purposes on a Slackware server, and I'm quite happy with it. In my humble opinion, every admin who wants to host OwnCloud or Nextcloud on a RHEL/CentOS server is confronted with a version dilemma. 1. CentOS 7 sports PHP 5.4, which has been officially EOL for quite some time, but Red Hat will provide security update backports until 2024. Which is fine. 2. Currently supported versions of Nextcloud (namely the 11.x and 12.x branch) require a minimum of PHP 5.6. Which seems reasonable. But if I pull in PHP 5.6 from Webtatic, for example, I only get the "official" PHP support, which will end in 2018 for the 5.6 branch. And no security backports. 3. The solution would be to go with Nextcloud 10, which only requires PHP 5.4, and which is also provided in package form by EPEL. 'yum info nextcloud' shows that the current EPEL version is 10.0.4... but a peek on the Nextcloud homepage shows me that this version is officially unsupported. Uh oh. 4. Some of the stuff I'm hosting on my CentOS 7 server (like CMSMS) is not compatible with PHP 7.x versions. So right now I don't see a solution for this. As far as I can see, the "least evil" solution would be to pull in PHP 5.6 from Webtatic and go for Nextcloud 11.x, and have an EOL for both around next summer. I'd be curious if some of you are familiar with this sort of dilemma (I guess so) and how you manage it. Cheers, Niki Kovacs -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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Block internet access for some users on the LAN ?
by Nicolas Kovacs 19 Sep '17

19 Sep '17

Hi, In our local school we have two servers and roughly 80 clients. The network is 192.168.10.0/255.255.255.0, and DHCP+DNS is managed by Dnsmasq. School PCs (teachers and management) are registered via MAC address and get an IP address in a specific range: 192.168.10.2 - 192.168.10.50 - management + teachers 192.168.10.201 - 192.168.10.220 - computer room 192.168.10.246 - 192.168.10.247 - printers 192.168.10.251 - 192.168.10.253 - wireless access points If a client (like a student's laptop, tablet or smartphone) is not registered, it gets an IP address in the range between 192.168.10.100 and 192.168.10.200. Up until recently I've been using a combination of Squid and Squidguard to filter Internet access. This year the school's director wants to completely block Internet access for all the student's personal devices. The Linux server acts as a transparent gateway. Unfortunately with Squid I can only filter/block HTTP connections, but not HTTPS (well, I could, but this is way too complicated to setup). The firewall is managed by a simple Iptables script. Now I *think* the easiest way to block a certain IP range from Internet access would be through Iptables (correct me if I'm wrong). If this is the case, what would that look like? Any suggestions? Niki Kovacs -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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KVM SSL with wget
by MOKRANI Rachid 19 Sep '17

19 Sep '17

Hi, I installed KVM on a CentOS 7.4 host. The guest is also installed in CentOS 7.4, the network works perfectly. Both Host and Guest machines have the same OS. I do not understand why I have an SSL error on the guest and not on the host while the two computers have the same OS installation. The firewalld, selinux, fail2ban services are not installed on host and guest. Is there an extra manipulation that I have forgotten to do? Many thanks. Below my log on Host and Guest. Host /usr/bin/wget --version GNU Wget 1.14 built on linux-gnu. wget https://www.google.com --2017-09-19 16:15:44-- https://www.google.com/ Resolving www.google.com<http://www.google.com> (www.google.com<http://www.google.com>)... 2a00:1450:4009:809::2004, 216.58.198.164 Connecting to www.google.com<http://www.google.com> (www.google.com<http://www.google.com>)|2a00:1450:4009:809::2004|:443... connected. HTTP request sent, awaiting response... 302 Found Location: https://www.google.fr/?gfe_rd=cr&dcr=0&ei=kCbBWe-fOMnU8gfBmLmABA [following] --2017-09-19 16:15:44-- https://www.google.fr/?gfe_rd=cr&dcr=0&ei=kCbBWe-fOMnU8gfBmLmABA Resolving www.google.fr<http://www.google.fr> (www.google.fr<http://www.google.fr>)... 2a00:1450:4009:814::2003, 216.58.204.3 Connecting to www.google.fr<http://www.google.fr> (www.google.fr<http://www.google.fr>)|2a00:1450:4009:814::2003|:443... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: 'index.html.10' [ <=> ] 10,853 --.-K/s in 0s 2017-09-19 16:15:45 (41.9 MB/s) - 'index.html.10' saved [10853] Guest VM ping www.google.com<http://www.google.com> return OK /usr/bin/wget --version GNU Wget 1.14 built on linux-gnu. My Pb on the guest : wget https://www.google.com --2017-09-19 16:16:03-- https://www.google.com/ Resolving www.google.com<http://www.google.com> (www.google.com<http://www.google.com>)... 216.58.198.164, 2a00:1450:4009:809::2004 Connecting to www.google.com<http://www.google.com> (www.google.com<http://www.google.com>)|216.58.198.164|:443... connected. OpenSSL: error:1408D07B:SSL routines:ssl3_get_key_exchange:bad signature Unable to establish SSL connection. __________________________ Avant d'imprimer, pensez à l'environnement ! Please consider the environment before printing ! Ce message et toutes ses pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation non conforme à sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. IFP Energies nouvelles décline toute responsabilité au titre de ce message. This message and any attachments are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. IFP Energies nouvelles should not be liable for this message. __________________________

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JRE 8.1 for CentOS6
by Larry Martell 18 Sep '17

18 Sep '17

I have some software that says it requires JRE 8.1 or higher. If I go to http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133… and install jre-8u144-linux-x64.rpm I get jrel.8.0_144. Anyone know where I can get 8.1?

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Update from 7.3 to 7.4 failing because of architecture change from PPC64 to PPC
by Armin Kunaschik 18 Sep '17

18 Sep '17

Hello, I'm having problems updating from 7.3 to 7.4 on my ppc64 (IBM Power7 p770) installation. yum update stops with Error: Multilib version problems found. [..] Protected multilib versions: systemd-libs-219-42.el7.ppc != systemd-libs-219-42.el7_4.1.ppc64 When I scroll back through the transaction check I see various package dependencies for *.ppc instead of *.ppc64. First appearance in the check is glibc.ppc and then everything goes nuts: [..] --> Running transaction check ---> Package boost-date-time.ppc64 0:1.53.0-27.el7 will be installed ---> Package elfutils-default-yama-scope.noarch 0:0.168-8.el7 will be installed ---> Package glibc.ppc 0:2.17-196.el7 will be installed --> Processing Dependency: libfreebl3.so(NSSRAWHASH_3.12.3) for package: glibc-2.17-196.el7.ppc --> Processing Dependency: libfreebl3.so for package: glibc-2.17-196.el7.ppc ---> Package grub2-common.noarch 1:2.02-0.64.el7.centos will be installed ---> Package grub2-ppc64.ppc64 1:2.02-0.64.el7.centos will be installed --> Processing Dependency: grub2-ppc64-modules = 1:2.02-0.64.el7.centos for package: 1:grub2-ppc64-2.02-0.64.el7.centos.ppc64 ---> Package gtk-update-icon-cache.ppc64 0:3.22.10-4.el7 will be installed ---> Package libfastjson.ppc64 0:0.99.4-2.el7 will be installed ---> Package libseccomp.ppc64 0:2.3.1-3.el7 will be installed ---> Package nss-pem.ppc64 0:1.0.3-4.el7 will be installed ---> Package python-linux-procfs.noarch 0:0.4.9-3.el7 will be installed ---> Package python-schedutils.ppc64 0:0.4-6.el7 will be installed ---> Package stix-fonts.noarch 0:1.1.0-5.el7 will be installed ---> Package systemd-libs.ppc 0:219-42.el7 will be installed --> Processing Dependency: libselinux.so.1 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libpam_misc.so.0(LIBPAM_MISC_1.0) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libpam_misc.so.0 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libpam.so.0(LIBPAM_MODUTIL_1.0) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libpam.so.0(LIBPAM_EXTENSION_1.0) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libpam.so.0(LIBPAM_1.0) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libpam.so.0 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: liblzma.so.5(XZ_5.0) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: liblzma.so.5 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libgpg-error.so.0 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libgcrypt.so.11(GCRYPT_1.2) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libgcrypt.so.11 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libgcc_s.so.1(GCC_3.3.1) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libgcc_s.so.1(GCC_3.0) for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libgcc_s.so.1 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libdw.so.1 for package: systemd-libs-219-42.el7.ppc --> Processing Dependency: libcap.so.2 for package: systemd-libs-219-42.el7.ppc --> Running transaction check ---> Package elfutils-libs.ppc 0:0.168-8.el7 will be installed --> Processing Dependency: elfutils-libelf(ppc-32) = 0.168-8.el7 for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libz.so.1(ZLIB_1.2.2.3) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libz.so.1 for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.7) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.6) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.5) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.4) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.3) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.1.1) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1(ELFUTILS_1.0) for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libelf.so.1 for package: elfutils-libs-0.168-8.el7.ppc --> Processing Dependency: libbz2.so.1 for package: elfutils-libs-0.168-8.el7.ppc [..] The current 7.3 has no .ppc at all installed. All filesets are ppc64 or noarch. Is it possible, that the repo is damaged somehow? How can I create additional info? Any idea how to fix it? Regards, Armin

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audio flaky
by Michael Hennebry 18 Sep '17

18 Sep '17

I'm running CentOS 6. The audio goes in and out a lot. With vlc, I can sometimes get the audio back by turning the audio track off and on again. I have similar issues with a/v embedded in html. Any suggestions on how to diagnose this? -- 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

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Re: [CentOS] Centos 7.4.1708 dependency problems
by Lamar Owen 18 Sep '17

18 Sep '17

Greg, according to the release notes "Known Issues" section ( https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7?action=show&redirect=M… ) you need to run "yum downgrade libgpod" first. I have updated a dozen or so machines to 7.4.1708, and several needed this.

2 1

keepalived segfault after upgrade to 7.4
by Phil Manuel 17 Sep '17

17 Sep '17

Prior to upgrading to CentOS 7.4 everything was fine, after upgrade I'm seeing /etc/keepalived# keepalived -f /etc/keepalived/keepalived.conf --dont-fork --log-console --log-detail --dump-conf -m -v Starting VRRP child process, pid=17224 Registering Kernel netlink reflector Registering Kernel netlink command channel Registering gratuitous ARP shared channel Opening file '/etc/keepalived/keepalived.conf'. VRRP_Instance(VI_1) removing protocol VIPs. Keepalived_vrrp exited due to segmentation fault (SIGSEGV). Please report a bug at https://github.com/acassen/keepalived/issues and include this log from when keepalived started, what happened immediately before the crash, and your configuration file. KLeepalived just respawns, segfaults, respawns ... Someone else has reported a similar issue, https://github.com/acassen/keepalived/issues/650 Regards Phil

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