Discuss October 2015

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CentOS-announce Digest, Vol 128, Issue 3
by centos-announce-request＠centos.org 13 Oct '15

13 Oct '15

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-2015:1889 Important CentOS 6 spice-server Security Update (Johnny Hughes) 2. CESA-2015:1890 Important CentOS 7 spice Security Update (Johnny Hughes) 3. CentOS Linux 7 for 32-bit x86 (i386) Architecture (Johnny Hughes) 4. Release for CentOS Linux 7 Rolling media Sept 2015 (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Mon, 12 Oct 2015 23:26:07 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2015:1889 Important CentOS 6 spice-server Security Update Message-ID: <20151012232607.GA38879(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2015:1889 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-1889.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 48643f342673588b60585bde6ee2f6267c7efb4aca58f5d22d8dafcfee2dc77f spice-server-0.12.4-12.el6_7.3.x86_64.rpm be05fbaa5cab61394106aafe500f342fc0ec2164807c8e46d9f59d31520738a3 spice-server-devel-0.12.4-12.el6_7.3.x86_64.rpm Source: 085674b2a16790d3debe759958f2a430ff3aaa18b01088c5bc1e7b29b56d9b26 spice-server-0.12.4-12.el6_7.3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Tue, 13 Oct 2015 00:01:21 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2015:1890 Important CentOS 7 spice Security Update Message-ID: <20151013000121.GA46539(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2015:1890 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-1890.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 2438f62fb457d22d95b6ca40e68743fc1765e9e34c1966eb30aa605f34e468a2 spice-server-0.12.4-9.el7_1.3.x86_64.rpm 37030fca2cc111cd73bf4ae8c233d30f75db887e8103eb8b91428b0777c61f50 spice-server-devel-0.12.4-9.el7_1.3.x86_64.rpm Source: 10eefd09b96d5184be8b9c3addfcabbf37382b9dfc587260c2ebdf09913872ba spice-0.12.4-9.el7_1.3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Mon, 12 Oct 2015 11:07:17 -0500 From: Johnny Hughes <johnny(a)centos.org> To: CentOS-Announce <centos-announce(a)centos.org> Subject: [CentOS-announce] CentOS Linux 7 for 32-bit x86 (i386) Architecture Message-ID: <561BDAB5.5000300(a)centos.org> Content-Type: text/plain; charset="utf-8" We would like to announce the general availability of CentOS Linux 7 for the 32-bit x86 (i386) architecture. This is the first major release of the 32 bit x86 by the AltArch Special Interest Group. This release is based on the Source Code from the CentOS 7 (1503) x86_64 architecture and includes all current updates from the main CentOS 7 tree. Installation ============ Install ISOs are available here: http://mirror.centos.org/altarch/7/isos/i386/ sha256sums: CentOS-7-i386-DVD-1503.iso: 8973b31b45878b2277c19465b0260aab4efb86126033ee0909fafa47ace5c3af CentOS-7-i386-Everything-1503.iso: 1c016cd95aaa8fe9bc68376f388c03c704eacd3f303e7f37f026e6aed4f78b77 CentOS-7-i386-Minimal-1503.iso: 4b71900eda2e863234e2edee9b2c3753f83bc9a0912551d26f69ff1e202ca979 CentOS-7-i386-NetInstall-1503.iso: cea236c94a26e62330acbbf8fe0e1aefa75f282fdbaab7f169213e8fb33d2cc4 The install process is identical to CentOS 7 x86_64 via kickstart or ISO installers. Known Issues ============ 1. If installing on a QEMU (kvm) i386 VM, you must modify the VM cpu to use "copy host cpu" http://bugs.centos.org/view.php?id=8748 2. The gnome desktop will not exit or log out from the menu. http://bugs.centos.org/view.php?id=8834 More Information ================ More information is available on the i386 AltArch page: https://wiki.centos.org/SpecialInterestGroup/AltArch/i386 -- Johnny Hughes CentOS Project { https://www.centos.org/ } irc: hughesjr, #centos at irc.freenode.net

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Fwd: oVirt - High Availability
by Indunil Jayasooriya 13 Oct '15

13 Oct '15

Hi users, I have setup OVIRT 3.5 with* 2 CENTOS 7.1 hosts. Everything is ok other than HA ( High Availability). *To test HA, Documentation says, *Power Management is needed. * Could you pls let me know if this Power Management is a separate Device or does it come with a BRANDED Server such as HP, IBM or Dell? I have seen a* ILO* port in HP servers. Can I use it for HA ( High Availability) in ovirt? If *power management* is *present in Branded Servers*, Could you pls let me know some *Branded RHEL 7.1/CentOS 7.1 supported servers?* Then, I can use it for Production use. Have you guys* DONE HA in CENTOS with ovirt 3.5? * *This is an YOU TUBE video for HA.* https://www.youtube.com/watch?v=uHCnXGUMaS0 Is this a correct video for HA? HOPE TO hear from you? -- cat /etc/motd Thank you Indunil Jayasooriya http://www.theravadanet.net/ http://www.siyabas.lk/sinhala_how_to_install.html - Download Sinhala Fonts

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mount: unknown filesystem type '(null)' error
by Tim Dunphy 13 Oct '15

13 Oct '15

Hey guys, I'm trying to mount a disk volume on aws under CentOS 7. And when I try I get this result: [root@repo:~] #mount /dev/xvdf1 /opt/repo mount: /dev/xvdf1 is write-protected, mounting read-only mount: unknown filesystem type '(null)' The only thing I can see in dmesg that seems to relate is: [ 2481.434610] EXT4-fs (xvdf1): VFS: Can't find ext4 filesystem [ 2509.883144] EXT4-fs (xvdf1): VFS: Can't find ext4 filesystem What can I do to get around this poblem? Thanks, Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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Centos 6.7 on Tyan Tiger MPX, Graphics and eArrayDirector
by H 13 Oct '15

13 Oct '15

I am a newcomer to Centos and could benefit from some help. I am repurposing an older server and installed Centos 6.7 on a Tyan Tiger MPX 2466 motherboard. The installation went flawlessly but the graphics chip on the motherboard is obviously quite old, a Matrix Millennium MGA 2064W, and the slow default driver (VESA?) was installed. Is a faster video driver available? It would be nice to be able to run the desktop more smoothly... The graphics chip has 8 MB of memory. I Googled but did not find a driver. Is this VESA driver the reason the monitor, an Acer S230HL, is not identified but shown as Unknown in the monitor setup? This machine will be hosting the LSI eArrayDirector client and server for two DF4000 fiber channel diskarrays. Unfortunately this Java application cannot be installed on Centos 6.7 but I am hoping there might be some user who have been able to work around this limitation by installing eArrayDirector on another system and then moving the installation to a later Centos version. Comments and suggestions welcome! Thank you.

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Annoying license at install
by david 12 Oct '15

12 Oct '15

Folks I have several remotely-located servers, donated by folks not all of whom are computer geeks, let-alone Linux aware. In earlier versions of Centos, I directed them to perform a minimal NetInstall (not too difficult to direct over the phone), and then issue two commands after the first boot. One was a 'curl' to download a script of mine, and the second was a dot-command to run it. A few reboots followed in close succession, and I directed them to logon as root, and issue a simple dot-command. The personal intervention ended usually within an hour, since I had ssh access to the system and root, and could complete the installation and tailoring completely remotely. I would only need their intervention in the case of problems. In many cases, I've not needed to invoke that help for a year or more. This scheme worked well until I decided to add support of graphical desktops on the systems in Centos 7, as I had in Centos 6. Once those packages were installed, further non-intuitive on-site intervention was required at next reboot to approve licenses. Remote ssh logins didn't work until that was done. These licenses needed to be approved on the local console. This is quite annoying and places more demands upon my remote friend. In some cases, the console and keyboard had been removed and the box had been placed in the closet. I am seeking a way to reduce or eliminate this annoyance. The best would be to find some way to 'pre-approve' the license agreement in my customizing scripts. Failing that, it would be nice to be able to approve these scripts from a remote ssh logon. I am reluctant to deploy Centos 7 without GUI support (I use x2go sometimes), and am thus reluctant to deploy centos 7 at this point. Advice and comments welcome David San Francisco

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problem on exceptional quit
by Hua Wang 12 Oct '15

12 Oct '15

Dear Centos Users: I installed Centos 7 on my server a few months ago. While using ssh, there is always a strange message "Write failed: Broken pipe”. It forces quit of SSH. It’s really annoying as it happens very often with irregular time interval - from a couple of minutes to a few hours. I have been working using Linux (Red Hat, Fedora and Centos) over 15 years. This didn’t happen for me even under centos 6.6. I have tried the following approaches, but none of them can help. I wonder if it can be solved by reinstall the system again. But it’s time consuming to reinstall a lot of softwares. 1. Login via Mac, Windows, Linux systems from different computers. 2. Modify sshd_config on the server as suggested by many posts: TCPKeepAlive yes ClientAliveInterval 60 3. Modify ~/.ssh/config file on my local computer: Host * ServerAliveInterval 60 4. Login ssh using -Y instead of -X. 5. add ‘unset autologout’ in my .cshrc. 6. I checked IP address with the internet administrator, and it works well. 7. add a file named autologout.csh with ‘set autologout=0’. Do you know a good solution? Thanks! Cheers, Hua ----------------------------- Hua Wang, Ph.D. in Geodesy Department of Surveying Engineering, Guangdong University of Technology, 100 Waihuan Xi Rd., Panyu District, Guangzhou, 510006, China. Tel: +86-13570019257 Email: ehwang(a)163.com Homepage: http://homepages.see.leeds.ac.uk/~earhw

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Dnsmasq
by Gabby Soberano 12 Oct '15

12 Oct '15

Looking for some feedback. Anybody using dnsmasq for dns/dhcp in enterprise level (300-500) users and machines? We have a mix of osx and linux machines. Have AWS instances as well (compute farm). Thanks -g

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Clustering and ha planning
by Leandro 11 Oct '15

11 Oct '15

Hello , Centos users: My name is Leandro, I have been using Centos for 4 years and this is the first post in this mail list. I would like to study and introduce myself in clustering and high availability for Centos, currently I have not experience at all about it. I would like to ask about the newest method to achieve high availability , load balancing on linux / Centos. So far I have seen the Clustering docs writen for Centos 5 and the HA documentation from www.linux-ha.org that have been published in 2010. So, I would like to ask to comunity, which are the new methods for clustering and get HA and where to get updated documentation. Regards, Leandro.

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filesystem mounting fails at boot
by Imre Gergely 10 Oct '15

10 Oct '15

Hi I have an IBM blade with internal harddisks, in hardware RAID1. I've installed a CentOS 6 64bit on it, everything works just fine. After the installation, I've presented a vdisk to the blade from an external SAN (an HP EVA4000), connected through FiberChannel. I've partitioned the disk, formatted it and mounted it under /store, then added it to fstab. Everything was fine, until I rebooted. At boot I'm getting the following error for /store: Mounting local filesystems: mount: special device UUID=2a587e95-4a6c-4336-bb8b-f0d066905bc5 does not exist It just goes on to boot without mounting this filesystem. After it boots, I can log in and give the command "mount -a", and it gets mounted without problems. As far as I can tell, the reason for this is that CentOS doesn't wait for the external disk to get initialized fully and it just doesn't find it at boot time. I have other CentOS blades, installed and booting from the same SAN and they work without problems, but I noticed that they wait a little bit longer at boot. Am I missing some stuff from initrd? What can I do to make it wait for the block device a bit longer before it tries mounting it ? Thanks! -- Imre Gergely http://havaz.net gpg --keyserver subkeys.pgp.net --recv-keys 0x34525305

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CentOS 7 CUPS: where queue defaults are stored?
by Valeri Galtsev 10 Oct '15

10 Oct '15

Dear Experts, CentOS 7 outsmarted me (again...). Could someone tell me where cups print queues' default settings are stored? In the past I was doing rather trivial thing: I was setting up prototype machine (making kickstart file based on it), then I was configuring all printers on prototype machine. After which (with cups daemon stopped) I was just packing /etc/cups (and maybe /usr/share/cups/model if extra ppd's were added). Then as a post-install I was just moving /etc/cups off the way, and unpacking /etc/cups, and all my printer configuration was there on newly built machine. Not anymore! After done what is described above I indeed have all printers, but queue defaults a weird: "double sided short edge" instead of "double sided long edge" as was configured on the prototype machine. What is more setting off is: recursive grep of /etc does not reveal files containing these settings (OK, OK, I know, I'm stupid, I don't know what pattern to grep for, but they are definitely not in /etc/cups AFAIK, or at leas not as ASCII...). Any insight into the system with - *cough* *cough* - binary configuration files? Incidentally, how do _you_ replicate CUPS configuration on CentOS 7 ? Thanks a lot for your help ! Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++

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Discuss October 2015