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Pulseaudio
by Adrian van Bloois 17 Apr '17

17 Apr '17

Hi, I get this error message: ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused It does not say connection to what, ?????? And is this a matter of permission??? This is C7 latest and greatest. Any ideas??? Adrian -- Adri P. van Bloois "Elegance is not a dispensable luxury but a factor that decides between success and failure." Edsger W. Dijkstra

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Help w/Error #14 in grub legacy in CentOS 6.8
by ejm 16 Apr '17

16 Apr '17

Hi all, I am getting Error #14 from grub version 0.97 when trying to boot for the first time into a newly installed partition with Scientific Linux 6.7 and need help resolving the error. The setup: MacPro with 2 HDs HD #1: ESP partition has rEFInd installed and running 2nd partition: Mac OSX 10.7.5 (lion) installed HD #2: 1st partition: Centos 6.8 (uses grub version 0.97) filesystem = ext4 2nd partition: Debian 8.7 (uses grub 2.0.2 beta). filesystem = ext4 3rd partition: Scientific Linux 6.7 (uses grub version 0.97). filesystem = ext4 The grub.conf in the CentOS partition has the following entries: title CentOS 6.8 (2.6.32-696.el6.x86_64) root (hd0,0) kernel /boot/vmlimuz-2.6.32-696.el6.x86_64 ro root=UUID=531c3b86-dc7e-4d14-9505-6df970dc8495 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_no_MD SYSFONT=latarcyrheb=sun16 crashkernel=128M KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet initrd /boot/initramfs-2.6.32-696.el6.x86_64.img title Debian 8.7 root (hd0,1) chainloader +1 title Scientific Linux 6.7 (Carbon) root(hd0,2) kernel /boot/vmlinuz-2.6.32-573.el6.x86_64 ro root=UUID=af382492-c826-4cf8-b134-9456fe5c100c initrd /boot/initramfs-2.6.32-573.el6.x86_64.img chainloader +1 I can boot fine into the Mac OSX from rEFInd. When I boot from rEFInd into the CentOS partition I get the Grub version 0.97 menu list with the 3 OSs listed above. I can then boot fine into CentOS 6.8 or Debian 8.7 just fine. I just added Scientific Linux 6.7 (SL) from a downloaded ISO image to the 3rd partition. SL installed fine. The installation itself was done using a PC (AMD64) running Windows 7 and the HD connected via USB and a mobile SATA dock. But using the above grub config for SL I get Error #14. If I comment-out the kernel and initrd lines in the SL entry I get Error #13. I confirmed that the kernel and the initramfs files both are in /boot in SL. I also checked the UUID for the 3rd partition with blkid and that is correct too. If I replace the kernel line for SL with the same one in the SL parititon I still get Error #14. The only difference with the full CentOS and SL kernel entries are the UUIDs of the partition and the minor version # (696 vs 573). I haven't seen anything specific to Error #14 in the blog entries I've seen. Everything I've tried results in either Error #14 or 13. I do think the SL partition will boot if given the correct grub conf to start with. Any tips or ideas would be greatly appreciated! Thanks, --Ed

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OT: Controlling Chrome via policy
by C. L. Martinez 15 Apr '17

15 Apr '17

Hi all, I have installed Google Chrome in two CentOS7 workstations. I would like to setup some extensions by default and install automatically. Reading Chrome/Chromium docs, it is possible to accomplish this using master_preferences or via policy. According to Chromium's docs, policy files needs to be installed under /etc/opt/chrome/policies/managed/ (for Chrome) or /etc/chromium/policies/managed/ (for Chromium). I have tried to create a JSON file (custom.json) with my options, but no go. What am I doing wrong? On the other side, according to Chromium's docs, master_preferences needs to be placed under dir where chrome binary is. Tried and no go. Any light on this? Thanks. -- Greetings, C. L. Martinez

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Primary DNS server with BIND on a public machine running CentOS 7
by Nicolas Kovacs 15 Apr '17

15 Apr '17

Hi, I just installed CentOS 7 on a public server. I'd like to setup BIND as a primary DNS server for a few domains. Until now, all my public machines were running Slackware Linux, and setting up BIND on a Slackware machine is relatively easy. In its out of the box configuration, it has a bone-headed caching nameserver role, which is quite easy to expand to a primary nameserver. Here's my documentation. It's in French, but the *nix bits are universal. http://blog.microlinux.fr/bind-slackware/ On my server running CentOS, I notice things are more complicated in the default configuration. The problem here is not so much documentation, but more like the wealth of information on the subject of BIND on CentOS, with often contradicting information. Is there a *reliable* more or less quick & dirty tutorial on how to get BIND up and running as a primary public nameserver, with the default configuration as a starting point? Think "recipe for pasta" and not "degree in food chemistry". :o) Cheers, Niki -- 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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Possible bug with latest 7.3 installer, md RAID1, and SATADOM.
by David C. Miller 15 Apr '17

15 Apr '17

I'm seeing a problem that I think maybe a bug with the mdraid software on the latest CentOS installer. I have a couple of new supermicro servers and each system has two innodisk 32GB SATADOM's that are experiencing the same issue. I used the latest CentOS-7-x86_64-1611 to install to the two SATADOM's a simple RAID1 for the root. The install goes just fine but when I boot off the new install I see one of two behaviours. It either hangs at boot, or boots fine but I start getting errors when using the system. For example it will give me the following error if I try to run yum update. error: rpmdb: damaged header #6 retrieved -- skipping. It will just hang giving that error over and over. I have to use a different login session to kill it or reboot. It doesn't even log anything to journelctl or /var/log/messages. At first I thought either the hardware was the issue(sata port, controller, SATADOM, etc). However, I do not see any issues if I don't try to raid the disks. Setting either of the SATADOM's up as a single system drive works just fine. It does not matter if I choose xfs or ext4 for the filesystem when I try to RAID them either. Making an md RAID1 out of the two disks with 7.3 installer is the only combination I see this issue with. If I use the previous 7.2 installer(CentOS-7-x86_64-1511) I don't see the problem at all. I can run yum update, reboot, and everything is still ok. I should also point out that I tested the CentOS 7.3 installer creating a md RAID1 system drive using two regular spinning hard drives and that worked just fine. I was wondering if anyone else has seen something similar or can confirm this problem before I submit it as a real bug.. TL/DR. Two different supermicro servers, both using innodisk 32GB SATADOM's and latest CentOS 7.3 installer to create a RAID1 system results in freezes and weird errors. Using the CentOS 7.2 installer works fine. David Miller.

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email subject length issue
by Jerry Geis 13 Apr '17

13 Apr '17

Hello all I seem to be running into a subject length issue on email. Is there any way to increase that ? Thanks, jerry

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bind vs. bind-chroot
by Nicolas Kovacs 13 Apr '17

13 Apr '17

Hi, On my public servers, I usually run BIND for DNS. I see CentOS offers a preconfigured (sort of) bind-chroot package. I wonder what's the effective benefit of this vs. a "normal" BIND setup without chroot. On my Slackware servers, I have a rather Keep-It-Simple approach to all things security, e. g. run no unneed services, open only needed ports etc. but I don't run the extra mile (and haven't been bitten so far). Any suggestions? (No flamefest please.) Niki -- 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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Excel shared spreadsheets on Samba share
by Dante F. B. Colò 13 Apr '17

13 Apr '17

Hello everyone I 'm trying to find what it happens on my Samba AD servers especially with shared spreadsheets, my personal opinion this feature on Excel is crap and unreliable but many people use it, how does Samba currently behave with this ? Is someone experienced any problem with this ? Frequently happens changes made by other user are lost the spreadsheet opens as read only , the shares are all using vfs_acl_xattr module to mimic NTFS permissions, clients are all windows machines versions 7 and 10 , i upgraded samba 4.3.11 to 4.5.7 but both have the same behavior. Any ideas ? Regards Dante

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OT apology
by Jon LaBadie 13 Apr '17

13 Apr '17

Sorry for those two Unix reminisces that made it to the list. I meant to send them to the poster. jon -- Jon H. LaBadie jon(a)jgcomp.com 11226 South Shore Rd. (703) 787-0688 (H) Reston, VA 20190 (703) 935-6720 (C)

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Enterprise Linux Slack
by Andrew Holway 12 Apr '17

12 Apr '17

Hallo, Considering the relative decline of IRC (sorry folks) I have set up a Slack for Enterprise Linux. I've been using "pythondev.slack.com" and honestly, its a fantastic tool for community support with really nice features for computer centric discussion. https://enterpriselinux.slack.com/shared_invite/MTY4MTM5NjQ2NTc5LTE0OTE5OTk… My hope is that those running Rhel and Centos can have a common place to flame war about SystemD, what to do when FreeIPA replication breaks and how to give your network interfaces sensible names without having to use a pastebin. Thoughts? Experiances? Cheers, Andrew

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Re CentOS and Intel graphics
by Mark (Netbook) 12 Apr '17

12 Apr '17

Hello, I have an Intel NUC7i3 with 620 graphics and an Intel NUC7i7 with 640 graphics. I have loaded CentOS 6.9 and the graphics is not fully working. I believe that I need a driver. Does CentOS support the Intel 620 and 640 graphics and if not, can someone please point me in the direction of the drivers, with install instructions. Regards, Mark Woolfson

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Ignoring /run/user/X
by Cameron Smith 12 Apr '17

12 Apr '17

We are running into an issue relating to snmpd and the temporary partitions created in /run/user/ so any insight by someone with magical net-snmp skills would be much appreciated. Our monitoring app walks all our servers. We modify /etc/snmp/snmpd.conf on all our servers to just have one line: rocommunity ourcommnuityname monitor.ing.app.ip This has worked just fine for almost 10 years. Since the release of CentOS 7 we are getting alerts for partitions not being found during walks and these are the temporary partitions that are ephemeral while a user is logged in: /run/user/0 /run/user/65000 Seems if the partition is there when the monitor is set or is added while the monitor is active the monitor will keep looking for it and these are meant to go away. We thought "OK we can just ignore those" so we added a line to /etc/snmpd.conf : ignoredisk /run/user/* but that has not helped :( Does anybody have a recommendation on how we can stop those partitions from being seen on walks so we can stop being alerted about partitions for which we are not interested in monitoring their available space? Thanks, Cameron

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Network Manager / CentOS 7 / local unbound
by Alice Wonder 12 Apr '17

12 Apr '17

Hello list - http://unix.stackexchange.com/questions/90035/how-to-set-dns-resolver-in-fe… That says it works for CentOS 5 and I *suspect* the methods there (3 listed) would work, but what is the best way with NetworkManager to set it up to use the localhost for DNS ? I'm paranoid about DNS spoofing and really prefer to have a local instance of DNSSEC enforcing unbound running on my CentOS 7 virtual machines (e.g. linode) Currently I just use a cron job that runs once a minute to over-write was it is /etc/resolv.conf so they don't use the DHCP assigned nameservers, but that does leave a short window every time the network is restarted. I'd like to know the proper way to set up Network Manager to just create nameserver 127.0.0.1 nameserver ::1 in /etc/resolv.conf Via google, it seems every distro approaches it differently and most instructions I have seen involve a GUI. I did not see how to do it in the CentOS documentation but it might be there and I just did not figure out how to search it for what I wanted. Those stackexchange methods look like they might work but they reference CentOS 5 and I know some NetworkManager stuff changed even just between 7.2 and 7.3 as I experienced incorrect IPv6 address after update as a result of those changes. Is there an "official" way to tell NetworkManager what I want in /etc/resolv.conf ? Or better yet, a way to just tell it to leave that file alone?

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CentOS 6 and pxeboot
by m.roth＠5-cent.us 12 Apr '17

12 Apr '17

Hi, folks, We've been using pxeboot to pull up a menu, to build or rebuild machines for years. We have this new server, and it fails. Times out. What's happening is that it tries in this order .../pxelinux.cfg/b8945908-d6a6-41a9-611d-74a6ab80b83d .../pxelinux.cfg/01-88-99-aa-bb-cc-dd .../pxelinux.cfg/C0A8025B .../pxelinux.cfg/C0A8025 .../pxelinux.cfg/C0A802 .../pxelinux.cfg/C0A80 .../pxelinux.cfg/C0A8 .../pxelinux.cfg/C0A .../pxelinux.cfg/C0 .../pxelinux.cfg/C .../pxelinux.cfg/default The first are MAC addresses, etc. I want it to pull default. It takes *minutes* to time out each option, so after a dozen or 15 min, when it gets to defaul, tftp has timed it out. Now, our dhcpd config has this for pxeboot: group { allow booting; allow bootp; filename "gpxelinux.0"; option-209 = "pxelinux.cfg/default"; option subnet-mask 255.255.254.0; option routers <our router>; default-lease-time 172800; # 2 days. max-lease-time 432000; # 5 days. I added that option-209, but it didn't take. I've been looking at the docs, but if someone's can tell me off the top of their head what I need to do, I'd appreciate it. This has become a high priority today.... mark

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jave-1.5.0 on centos 7...
by Ian Diddams 11 Apr '17

11 Apr '17

Curring a long story short... we had a centos 5 server running jboss 6 and jboss 4.2.3GA because of centois 5 EOL TPTB have decreed this server needs migratiung to a Centos 7 server But... the hboss 4.2.3GA jboss app uses java 1.5.0 (_22 FTWT). I can't *(unsurprisingly!) find java 1.5.0 under yum. anyone got it in an rpm or know where it can found? (At his stage it is merely a guess that it will run under centos 7 anyway!) cheers ian

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Re: [CentOS] OT: systemd Poll
by James B. Byrne 11 Apr '17

11 Apr '17

On Sun, April 9, 2017 00:39, Anthony K wrote: > According to "Arthur Schopenhauer": > > "All truth passes through three stages. > First, it is ridiculed. > Second, it is violently opposed. > Third, it is accepted as being self-evident." > > I must admit that I skipped through the first and second stages - I > never found creating init scripts a joy and instead opted to write my > own scripts that I launched via inittab. As such, I welcomed the > simplicity systemd's service files without fuss. > > So, at which stage are you in w/ regards to adopting systemd? Are you > still ridiculing it, violently opposed to it, or have you mellowed to > it? > A. FreeBSD-11. -- *** 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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Fwd: Obsolete NSA exploit for Postfix 2.0 - 2.2
by Robert Moskowitz 10 Apr '17

10 Apr '17

This was just posted on the Postfix list. Centos 7 ships with: postfix-2.10.1-6.el7 Has this cert advisory been applied to the Centos build of Postfix? thank you -------- Forwarded Message -------- Subject: Obsolete NSA exploit for Postfix 2.0 - 2.2 Date: Sun, 9 Apr 2017 16:18:06 -0400 (EDT) From: Wietse Venema <wietse(a)porcupine.org> To: Postfix users <postfix-users(a)postfix.org> CC: Postfix announce <postfix-announce(a)postfix.org> A recent twitter post reveals the existence of an exploit for Postfix, in a collection of what appear to be NSA tools. https://twitter.com/JulianAssange/status/850870683831648256 This is an exploit for Postfix 2.0 - 2.2, for a bug that was fixed 11 years ago in Postfix 2.2.11 and later. There was a memory corruption bug in a Postfix workaround for a Sendmail bug (CERT advisory CA-2003-07, remote buffer overflow when message headers contain lots of comment text before an email address). Technical details: the Postfix strip_address() function, which removes large comments from a mail header, called the printable() function on a string that wasn't null-terminated. This caused the printable() function to scribble past the end of malloc()ed memory, corrupting the memory heap. Running the exploit against Postfix versions less than 11 years old results in odd-looking email messages in the super-user's mailbox, and warning messages in the maillog file (warning: stripping too many comments from address: <long character string>). Wietse

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logwatch customization question
by Robert Moskowitz 09 Apr '17

09 Apr '17

Logwatch is installed, and I am assuming by how empty /etc/logwatch is that it is running from defaults, which I find in /usr/share/logwatch/default.conf/services I want to customize ONE service. dovecot. Do I copy /usr/share/logwatch/default.conf/services/dovecot.conf to /etc/logwatch/conf/services and edit it there, or do I have to copy ALL default.conf/services/* there and modify /etc/logwatch/conf/logwatch.conf to look there? The README is rather not helpful on this. How do I modify ONE service (and not just make the changes in default.conf that I have seen in a couple howtos. thanks

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Network configuration: desktop vs. laptop
by Nicolas Kovacs 09 Apr '17

09 Apr '17

Hi, I'm just migrating some stuff from Slackware Linux to CentOS, and I have a question about the orthodox way of configuring a network connection. On a desktop or workstation, I usually get rid of NetworkManager: # systemctl stop NetworkManager # yum remove NetworkManager Then I edit the /etc/sysconfig/network-scripts/ifcfg-XXXXX file corresponding to my network interface. Here's a working example: # /etc/sysconfig/network-scripts/ifcfg-enp2s0 DEVICE=enp2s0 TYPE=Ethernet ONBOOT=yes BOOTPROTO=dhcp Now I wonder how I should configure things on a laptop, where I usually keep NetworkManager. On a Slackware system, it's usually just a matter of leaving a pristine /etc/rc.d/rc.inet1.conf file, and then activate /etc/rc.d/rc.networkmanager. Starting from there, when there's a wireless connection available, I can connect using the little NetworkManager applet on the desktop. And when I switch to cable, NetworkManager will prefer that connection automagically. On a default installation (I went for the KDE version), NetworkManager is active, so I'll keep that. 'ifconfig' shows me that the cabled connection is up and running via enp3s0 on the laptop. Wireless doesn't seem to work, but 'ifconfig -a' shows me a wlp2s0 interface, which means there's a chance it will work. First thing I did was edit ifcfg-enp3s0 like this: DEVICE="enp3s0" TYPE="Ethernet" NM_CONTROLLED="yes" Then I edited ifcfg-wlp2s0 from scratch, since there's nothing present: DEVICE="wlp2s0" TYPE="Wireless" NM_CONTROLLED="yes" I rebooted (just to be on the safe side), and I have a partial success. I can connect via KDE's NetworkManager applet. But when I plug in an Ethernet cable, the wireless connection stays up and is not replaced by the cabled connection. 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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centos-release srpm for 6.9
by me＠tdiehl.org 08 Apr '17

08 Apr '17

Hi, Is the centos-release srpm available anywhere? I do not see any srpms in vault. Regards, -- Tom me(a)tdiehl.org Spamtrap address me123(a)tdiehl.org

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how to use livecd-creator to create my own livecd iso as same as offical release iso？
by 王强 08 Apr '17

08 Apr '17

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How to remove or disable xhci driver in images/pxeboot/vmlinuz in livecd iso
by 王强 08 Apr '17

08 Apr '17

Hello list, Is there an easy way to remove or disable xhci driver in images/pxeboot/vmlinuz? I need to avoid USB 3.0 controller to work in xhci mode when thn ananconda is working.

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Centos7-arm mailserver guide
by Robert Moskowitz 07 Apr '17

07 Apr '17

Three months in development! (well a couple hours a day) I am 99% complete! http://medon.htt-consult.com/Centos7-mailserver.html Virtual Mail Hosting on Centos7 Using Postfix MariaDB Dovecot PostfixAdmin Amavisd-new Spamassassin and Clamav The server is running in test right now. I will later go through this again to build the production unit. I welcome all reviews and comments.

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HP USB printer accepts jobs, but won't print
by Michael Hennebry 07 Apr '17

07 Apr '17

My HP USB C3180 All-in-one printer accepts jobs, but does not print. A job simply sits in the queue. I haven't used it on this computer for a while. It will print a test page when I connect it. The last line from hp-info -i is 04/07/17 13:26:21 5012 Device communication error hennebry 0 (I've removed some blanks.) Any ideas 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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CentOS 6, apcupsd
by m.roth＠5-cent.us 07 Apr '17

07 Apr '17

Hi, folks, Anyone know what apcupsd is no longer in the EPEL repo for CentOS/RHEL 6? It's still in for 7. mark

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howto install yumex
by geo.inbox.ignored 07 Apr '17

07 Apr '17

greetings. trying to install yumex, but obviously have forgotten what i did previously to install packages. sudo yum install yumex* errors out with; No package yumex* available. please inform my chemo brain what is correct. tia. -- peace out. CentOS GNU/Linux 7.1511 tc,hago. g . =+= Tired of having your microsoft os hacked? Change to Linux os, used by microsoft hackers. =+= in a world with out fences, who needs gates. =+=

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Lock Screen in Gnome and using keyboard
by Daniel Ruiz Molina 06 Apr '17

06 Apr '17

Hello, I need to reconfigure Gnome in CentOS for avoiding that a normal user could lock screen using task bar option and/or "Super L" key (Windows Key + L). How could I configure Gnome? I need to do that in several computers, so I can't do "login" in X environment of each computer, but I need to reconfigure executing from command line (multiple SSH connections). Thanks.

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CentOS-announce Digest, Vol 146, Issue 2
by centos-announce-request＠centos.org 06 Apr '17

06 Apr '17

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. Release for CentOS Linux 6.9 i386 and x86_64 (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 5 Apr 2017 08:02:53 -0500 From: Johnny Hughes <johnny(a)centos.org> To: CentOS-Announce <centos-announce(a)centos.org> Subject: [CentOS-announce] Release for CentOS Linux 6.9 i386 and x86_64 Message-ID: <b6e412e7-cab4-1dce-2a9c-2e7536aef70a(a)centos.org> Content-Type: text/plain; charset="utf-8" We are pleased to announce the immediate availability of CentOS Linux 6.9 and install media for i386 and x86_64 Architectures. Release Notes for 6.9 are available at: http://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.9 CentOS Linux 6.9 is derived from source code released by Red Hat, Inc. for Red Hat Enterprise Linux 6.9. All upstream variants have been placed into one combined repository to make it easier for end users. Workstation, server, and minimal installs can all be done from our combined repository. All of our testing is only done against this combined distribution. There are many fundamental changes in this release, compared with the past CentOS Linux 6 releases, and we highly recommend everyone study the upstream Release Notes as well as the upstream Technical Notes about the changes and how they might impact your installation. (See the 'Further Reading' section if the CentOS release notes link above). All updates since the upstream 6.9 release are also on the CentOS mirrors as zero day updates. When installing CentOS-6.9 (or any other version) from any of our media, you should always run 'yum update' after the install to apply these. Users consuming our CentOS-CR repositories will already be running most of the packages that make up CentOS-6.9, and all updates released since. They will notice only the centos-release, anaconda, curl, tzdata, and oracleasm updates today when moving to CentOS Linux 6.9. For more information on the CR repository for future updates, see this link: http://wiki.centos.org/AdditionalResources/Repositories/CR Release Announcements for all updated packages are available here: http://bit.ly/2n1H8Bf +++++++++++++++++++++++ Upgrading From Prior Major CentOS Versions: We recommend everyone perform a fresh reinstall rather than attempt an inplace upgrade from other major CentOS versions (CentOS-2.1, CentOS-3.x, CentOS-4.x, CentOS-5.x). +++++++++++++++++++++++ Upgrading from CentOS-6.0 / 6.1 / 6.2 / 6.3 / 6.4 / 6.5 / 6.6 / 6.7 / 6.8 CentOS Linux is designed to automatically upgrade between releases within a major version (in this case, CentOS-6). Unless you have edited your yum default configuration, a 'yum update' should move your machines seamlessly from any previous CentOS Linux 6.x release to 6.9. We also test this in our QA cycles and have noticed no problems, any issues would be mentioned in the Release Notes. +++++++++++++++++++++++ Downloading CentOS Linux 6.9 for new installs: When possible, consider using torrents to obtain our ISOs. Usually it is also the fastest means to download the distro. The install media is split into various formats. We have made efforts to ensure that most install types and roles can be done from DVD-1 itself, and the minimal install ISO is only tested to deliver a minimal install set, when used as an ISO format ( either on cd or usb ). While other forms of installs ( eg. pxe delivered ) might work from the minimal ISO, they are neither tested not supported. The only format where we support the entire set of install options and delivery mechanisms is via the complete CentOS Linux 6.9 tree, which can also be created by consolidating all content from DVD1 and DVD2. We no longer produce CD size images for the entire CentOS Linux 6 distribution, however the minimal install and netinstall iso images are small enough to fit on all CD grade media. Torrent files for the DVD's are available at : i386: http://bit.ly/2nDOzh8 x86_64: http://bit.ly/2naL2eY If you download an ISO via torrent, leave it up for a couple hours to share with other users who are downloading. You can also use a mirror close to you to get any of our ISOs: http://mirror.centos.org/centos/6.9/isos/ If you need to update a local mirror, you can choose from our mirror network ( http://www.centos.org/download/mirrors/ ). Most mirrors will allow downloads over http, ftp and rsync. Note: The x86_64 ISOs (minimal, netinstall, DVD1) should install on UEFI machines. Secure Boot must be disabled to install CentOS 6. The Live ISOs and i386 ISOs will not boot with UEFI. +++++++++++++++++++++++ sha256sum for the CentOS-6.9 ISOS: x86_64: CentOS-6.9-x86_64-bin-DVD1.iso: d27cf37a40509c17ad70f37bc743f038c1feba00476fe6b69682aa424c399ea6 CentOS-6.9-x86_64-bin-DVD2.iso: 631b8640460f46a8139a6a7cbbac5f3594d08c32945449b6bbd65234929ce7a4 CentOS-6.9-x86_64-minimal.iso: 422af57b493b8af49d485885a730c5a1d955f803fac85aa51311c393168b9080 CentOS-6.9-x86_64-netinstall.iso: 6b2cbec908708476389b143841a8e73462506de0744bda8b4192d3655d5bb8d2 CentOS-6.9-x86_64-LiveDVD.iso ae56f677786673ad476477ed2df84ce80cf5f9b90a44e25146e69ef3cfd02602 i386: CentOS-6.9-i386-bin-DVD1.iso: 0724a468ec0c4ac46ac6a1daba0273be697a37bb7f4e9fed8ad84ad270cdee2f CentOS-6.9-i386-bin-DVD2.iso d95e427ca39588f4287f3bfdb080110c8dcbbfff76e1a6394395ec06858c8275 CentOS-6.9-i386-minimal.iso e104b3bc2261e40c020e4047d31a4454a00435787c54fb0a376261f9348382b7 CentOS-6.9-i386-netinstall.iso c498a47b5ec47ecc8423c96bb80e5dd530e4d98bb839c60476cf113d1e4de0d6 CentOS-6.9-i386-LiveDVD.iso 4f7cd0be1c223b22427830b101e3e1765a93d27ed668047d8183976247a8a427 +++++++++++++++++++++++ Cloud Images: Images for various on-premise and off-premise Cloud environments are currently under development for CentOS Linux 6.9 and will be released in the coming days. Everyone looking to join and help with the CentOS Cloud efforts is encouraged to join the CentOS-devel list where such issues are discussed ( http://lists.centos.org/mailman/listinfo/centos-devel ). +++++++++++++++++++++++ Getting Help: The best place to start when looking for help with CentOS is at the wiki ( http://wiki.centos.org/GettingHelp ) which lists various options and communities who might be able to help. If you think there is a bug in the system, do report it at http://bugs.centos.org/ - but keep in mind that the bugs system is *not* a support mechanism. If you need supported software with Support Level Agreements, people to call and response times then we recommend Red Hat Enterprise Linux. If you have questions you would like to field at us in real time, come join the office hours on Wed or Thu of every week. You can find details on these at http://wiki.centos.org/OfficeHours +++++++++++++++++++++++ Meet-ups and Events: If you would like to get involved in helping organize, run, present or sponsor a CentOS Dojo or even just want more details then join the CentOS Promo list: http://lists.centos.org/mailman/listinfo/centos-promo and drop an email introducing yourself. We are very keen to find help to run events around the world, and also to find people who can represent CentOS at various community events around the world. (Current Events List: https://wiki.centos.org/Events ) +++++++++++++++++++++++ Contributing and joining the project: We are always looking for people to join and help with various things in the project. If you are keen to help out a good place to start is the wiki page at http://wiki.centos.org/Contribute . If you have questions or a specific area you would like to contribute towards that is not covered on that page, feel free to drop in on #centos-devel at irc.freenode.net for a chat or email the centos-devel list (http://lists.centos.org) +++++++++++++++++++++++ Thanks to everyone who contributed towards making CentOS Linux 6.9, especially the effort put in, as always, by the QA (http://wiki.centos.org/QaGroup) and Build teams. A special shout out to all the donors who have contributed hardware, network connectivity, hosting and resources over the years. The CentOS project now has a fairly well setup resource pool, solely thanks to the donors. Enjoy! -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos at irc.freenode.net Twitter: @JohnnyCentOS

1 0

Re: [CentOS] [CentOS-announce] Release for CentOS Linux 6.9 i386 and x86_64
by Leon Fauster 06 Apr '17

06 Apr '17

Am 05.04.2017 um 15:02 schrieb Johnny Hughes <johnny(a)centos.org>: > > We are pleased to announce the immediate availability of CentOS Linux > 6.9 and install media for i386 and x86_64 Architectures. Release Notes > for 6.9 are available at: > > http://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.9 > > CentOS Linux 6.9 is derived from source code released by Red Hat, Inc. > for Red Hat Enterprise Linux 6.9. All upstream variants have been placed > into one combined repository to make it easier for end users. > Workstation, server, and minimal installs can all be done from our > combined repository. All of our testing is only done against this > combined distribution. Thank you very much! Just a hint: the new /6/ repo tree misses a signed repomd.xml for the cr/fasttrack subtrees. local config: # grep -R repo_gpg /etc/yum.repos.d/ /etc/yum.repos.d/CentOS-CR.repo:repo_gpgcheck=1 /etc/yum.repos.d/CentOS-Base.repo:repo_gpgcheck=1 /etc/yum.repos.d/CentOS-Base.repo:repo_gpgcheck=1 /etc/yum.repos.d/CentOS-Base.repo:repo_gpgcheck=1 /etc/yum.repos.d/CentOS-fasttrack.repo:repo_gpgcheck=1 Again, thanks for your great effort! -- LF

3 2

Roundcubemail 1.1.8 possible bug?
by Robert Moskowitz 06 Apr '17

06 Apr '17

I am installing Roundcubemail on Centos7-arm roundcubemail-1.1.8-1.el7.noarch The installer web app creates a config.inc.php to save within the /etc/roundcubemail/ directory. It warns that: "Make sure that there are no characters outside the <?php ?> brackets when saving the file." Thing is there is no ?> at the end of this. It is left out. So I got to add that myself. I should be able to just copy the content of the text box, and paste it into a cat > /etc/roundcubemail/config.inc.php, but I am left having to at least having to add the ending ?>

2 2

CentOS 7, systemd,, and message floods
by m.roth＠5-cent.us 05 Apr '17

05 Apr '17

I've just updated a couple of servers, latest 7.3, and systemd is flooding dmesg, journalctl with info level messages... or maybe debug level 1. Examples: [ 478.258571] systemd[1]: Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/unit/httpd_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=436 reply_cookie=0 error=n/a [ 478.258971] systemd[1]: Got notification message for unit systemd-logind.service [ 478.258980] systemd[1]: systemd-logind.service: Got notification message from PID 821 (WATCHDOG=1) [ 478.258985] systemd[1]: systemd-logind.service: got WATCHDOG=1 What *is* all that garbage, and is there some way to turn it down to WARN and ERR messages? mark

3 3

Timezone and date
by Jerry Geis 05 Apr '17

05 Apr '17

When I do the date +%Z I get the timezone. Which currently is EDT. I am sending information to another system, that says EDT is not a valid timezone. I have no way to modify the other system. My question is - is there a way to get the non-day-lite savings time zone ? For example EST is valid - EDT is not. Just curious if there is an easy way already present to get a standard time zone. Thanks, - I know weird situation the other end not supported EDT. Jerry

6 8

Re: [CentOS] Timezone and date
by James B. Byrne 05 Apr '17

05 Apr '17

On Tue, April 4, 2017 21:22, Jerry Geis wrote: > When I do the date +%Z I get the timezone. Which currently is EDT. > > I am sending information to another system, that says EDT is not a > valid > timezone. I have no way to modify the other system. > > My question is - is there a way to get the non-day-lite savings time > zone ? > For example EST is valid - EDT is not. > date -u Wed Apr 5 20:18:45 UTC 2017 -- *** 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

1 0

Xorg problem
by Rosenthal, Shoshana 05 Apr '17

05 Apr '17

I updated to Centos 6.8. Every thing is working, except Xorg does not startup. When I look at top, it seems that Xorg keeps trying but not succeeding to start. Any idea what the problem might be? Thanks Shoshana Rosenthal srosenthal(a)cfa.harvard.edu

4 7

Compiling custom "vmlinuz" PXE kernel?
by Locane 05 Apr '17

05 Apr '17

Hello CentOS list, I still need help. Does anyone know how I would go about creating my own "vmlinuz" PXE kernel? I'm still trying to get the NUC6CAYH to load to a LiveCD, and I'm getitng nowhere with Intel. My company wants to do hundreds of these per month; we're not above paying for professional help at this point. My current line of reasoning is to get whatever specialized memory and CPU drivers the NUC6CAYH requires to recognize properly and bake them in to a custom vmlinuz PXE kernel that loads the initial ramdisk image. This kernel is located in a regular CentOS 7.3 DVD at CentOS-7-x86_64-DVD-1611/images/pxeboot/vmlinuz. Has anyone done this before? Is there documentation online?

4 3

sound problems... config?
by ken 05 Apr '17

05 Apr '17

The www has failed me with this, so I'm trying you guys. Sound worked great out of the box when I installed 7.2... Yay! I could watch all kinds of videos, like on facebook and youtube. And I could listen to most podcasts too. But then something happened. It was either a kernel upgrade or that I installed vlc (for watching videos on DVD) and the whole stack of codecs for it... I don't know exactly when, but at some point I no longer had sound with youtube and other web videos. The videos played fine, just no sound. Note that using vlc, both video and the audio with it play just fine. I need to select the audio driver (from a list in a vlc menu), however, else the sound won't work in vlc either. If I go into the Applications menu, then System Tools -> Settings -> Sound, under "Choose a device for sound output:" there are no devices listed. There used to be. If I run "aplayer file.wav", nothing plays (no sound at all) and I get the error "main:786: audio open error: No such file or directory". If, on the other hand, I run "aplay file.wav -D plughw:0" (i.e., specify the/a device), I do get sound, the file does play. I ran alsa-info.sh and it posted tons of info from it on my setup at http://www.alsa-project.org/db/?f=1dba91886be054df4816000768a0f5b109947a48. Yet it still doesn't tell me what's missing. Anyone here have an idea...? or thoughts about where to look next? tia, ken

5 14

libreoffice vs. PDF fillable forms
by Michael Hennebry 05 Apr '17

05 Apr '17

On centos 6, I've been trying to use LibreOffice to fill in entries of a PDF with fillable forms. In addition to all my other problems, the font size is stuck on 24. I can change it, but whenever I so much a take a deep breath, it's back to 24 again. How do I stop this? So far, all my searches have given me stuff about making fillable forms, but nothing about dealing with existing ones. -- 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 1

M.2 PCI-E card
by Alice Wonder 04 Apr '17

04 Apr '17

Hello list, My instinct says the vast majority will "just work" but I'll ask anyway. I need a low profile PCI-E card that allows for up to 2 M.2 SSD drives that is known to work with the stock kernel in CentOS 7. Can anyone recommend one? Thanks

6 6

CentOS-announce Digest, Vol 146, Issue 1
by centos-announce-request＠centos.org 04 Apr '17

04 Apr '17

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. CentOS Linux 5 EOL (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 3 Apr 2017 07:12:27 -0500 From: Johnny Hughes <johnny(a)centos.org> To: CentOS-Announce <centos-announce(a)centos.org> Subject: [CentOS-announce] CentOS Linux 5 EOL Message-ID: <4e6a4cf7-e532-ad53-a775-95bef831e1be(a)centos.org> Content-Type: text/plain; charset="utf-8" CentOS Linux 5 has reached End of Life, as of 31 March 2017. Please note that the latest version of CentOS Linux 5 (version 5.11 with updates) will remain available here (archived): http://vault.centos.org/5.11/ Please also note that this directory will not be maintained as there are no more public source code releases for upstream RHEL-5. That means there will be no more security updates for CentOS Linux 5. The CentOS team does not recommend using CentOS Linux 5 for any purpose. If you have workloads that can not be moved from the EL5 code base, you can obtain paid extended support from Red Hat for RHEL-5. See ELS (Extended Life-cycle Support) from this link: https://access.redhat.com/support/policy/updates/errata Thanks, Johnny Hughes

1 0

Using environment variables in mariadb
by Robert Moskowitz 04 Apr '17

04 Apr '17

I want to script a rather simple create database operation. Thing is, I have to provide the password for that database. I would like to do this with an environment variable, but the simple approach dose not work: mailpswd=charlie mysql -u root -p CREATE DATABASE mailfix; CREATE USER 'mailfix'@'localhost' IDENTIFIED BY $mailpswd; GRANT ALL PRIVILEGES ON `mailfix` . * TO 'mailfix'@'localhost'; Of course the mysql command needs the mysql root password, but that is as expected. But mysql will not process $mailpswd, not surprisingly. I know I could create a file with these commands, sed the password into the file, then pipe thr file into mysql. I would rather do this directly without a temp file. thanks

3 3

Realtime repo
by Tim 04 Apr '17

04 Apr '17

Hello, is there an easy way to activate/install the realtime-repo under http://mirror.centos.org/centos/7/rt/ or do I have to write the repo-file manually? Thanks in advance Tim

2 1

NFS Client with quota
by koji.morikawa 04 Apr '17

04 Apr '17

Hello. I am "koji". I have a question. Can I mount a NFS with quota? (Not Server side) I understand quota is set NFS server. But I must client side. (Is rquota only report?) Does anyone know a good solution? Best regard. koji

3 6

CentOS Linux 5 End of Life
by Johnny Hughes 03 Apr '17

03 Apr '17

CentOS Linux 5 has reached End of Life, as of 31 March 2017. Please note that the latest version of CentOS Linux 5 (version 5.11 with updates) will remain available here (archived): http://vault.centos.org/5.11/ Please also note that this directory will not be maintained as there are no more public source code releases for upstream RHEL-5. That means there will be no more security updates for CentOS Linux 5. The CentOS team does not recommend using CentOS Linux 5 for any purpose. If you have workloads that can not be moved from the EL5 code base, you can obtain paid extended support from Red Hat for RHEL-5. See ELS (Extended Life-cycle Support) from this link: https://access.redhat.com/support/policy/updates/errata Thanks, Johnny Hughes

1 0

How to enable the svm cpu flag inside a vm?
by Leonard den Ottolander 03 Apr '17

03 Apr '17

Hello, I'm trying to get the Android Emulator to run inside a kvm vm on CentOS-6. Apparently the latest Android Emulators cannot run without hardware acceleration so I am trying to get the vm to see the svm cpu flag. Host: $ grep model\ name /proc/cpuinfo | sort -u model name : AMD Phenom(tm) II X4 965 Processor $ grep svm /proc/cpuinfo | sort -u flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save $ cat /sys/module/kvm_amd/parameters/nested 1 I have tried copying the cpu options (Opteron_G3) in the host cpu configuration and setting the svm flag to either "model", "required" or "force" to no avail: $ ps waux | grep qemu qemu 7962 7.2 21.9 3722092 2680668 ? Rl 13:23 6:36 /usr/libexec/qemu-kvm -name C7-Android -S -M rhel6.6.0 -cpu Opteron_G3,+invtsc,+wdt,+skinit,+ibs,+osvw,+3dnowprefetch,+cr8legacy, +extapic,+cmp_legacy,+3dnow,+3dnowext,+pdpe1gb,+fxsr_opt,+mmxext,+ht, +vme -enable-kvm -m 3072 -realtime mlock=off -smp <snip> So the question is: How do I enable the svm flag in the guest? Regards, Leonard. -- mount -t life -o ro /dev/dna /genetic/research

4 7

DNAT Internet gate problem on centos
by Andreas Benzler 02 Apr '17

02 Apr '17

Hello Guys, I got trouble to get vserver work as gate: GATE=XX.XX.XX.XX YY_PORT=YY echo "1" > /proc/sys/net/ipv4/ip_forward iptables -F -t nat iptables -t nat -A PREROUTING -p tcp -i venet0:0 --dport $YY_PORT \ -j DNAT --to-destination $GATE:$YY_PORT iptables -t nat -A POSTROUTING -p tcp --dport $YY_PORT \ -j MASQUERADE iptables -L -t nat Any suggestion? I got it in the past, but now I'm completely confused. Thanks for help. Sincerely Andy

1 2

Sendmail is considered deprecated
by Xinhuan Zheng 02 Apr '17

02 Apr '17

Hello, Today I searched redhat official portal and learned that Sendmail is considered deprecated. By default, CentOS 7 will use postfix as MTA. I need good advise on what it means to us. We are CentOS customers. We use that operating system for quite a few years. We rely on Sendmail for years for us to relay large quantity of emails to our customers for marketing purpose. We build our additional fallback servers as well for fallback relays. We build our customized configuration for Sendmail too. I really need help to figure out if we can continue using Sendmail (even deprecated) for future long term and what implication would be doing so. Thanks, - xinhuan

7 11

Best practices for docker setup on Centos 7?
by Rafał Radecki 31 Mar '17

31 Mar '17

Hi All. I am currently running docker 1.13 on Centos 7 boxes with devicemapper storage plugin. I would like to know what are your experiences in regard to: - storage plugins - kernel versions - stability I consider upgrade to docker 17.03.1 and would like to choose most stable combination of kernel/storage plugin. Thanks for all info! BR, Rafal.

2 1

firewalld management on a headless server
by Robert Moskowitz 31 Mar '17

31 Mar '17

Is there an Apache tool to manage firewalld on a headless server? I am looking forward to my next Centos project which is to replace my Juniper SSG5 firewall... And along that line, what overlap, if any between firewalld and Suricata? thank you

12 17

have udev to ignore/hide a scsi disk - but how?
by lejeczek 30 Mar '17

30 Mar '17

hi everyone I've been playing and trying to tell udev to ignore and not create symlinks in /dev but I fail. Hoping this is the one: ENV{ID_SERIAL}== I've tried: ENV{SYSTEMD_READY}:="0" OPTIONS+="last_rule" even ENV{UDISKS_IGNORE}="1" but udev tests would still show: ACTION=add and symlinks created. Would share an advice? many thanks, L.

1 0

Python 3.x on Centos 7
by Matt 29 Mar '17

29 Mar '17

Is there a way to install Python 3.x on Centos 7.x without breaking anything that depends on an older version of Python? This server is a minimal Centos 7 install that primarily runs a simple LAMP setup.

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