Discuss August 2012

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190 participants
169 discussions

Strange issue with system time being off
by Russell Jones 15 Aug '12

15 Aug '12

Hi all, I am having an issue with some older CentOS 5.3 servers. Every time the server boots, it gives the error "Cannot access the hardware clock by any known method", and then promptly sets the time 5 hours behind the hardware clock, down to the second. After the system is up. "hwclock" works fine. hwclock --debug does not show any error at all. The hardware clock is configured in local time. /etc/sysconfig/clock is set to UTC=false and ZONE="America/Chicago". /etc/localtime is a copy of Chicago's zone file. /etc/adjtime is configured with "LOCAL" as the third row. I am at a loss as to what is causing this. Any assistance is appreciated! Thanks!

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how best to rollback from a yum update?
by Jon Detert 15 Aug '12

15 Aug '12

Suppose I want to upgrade a bunch of packages on a system, but in case the upgrade produces unexpected, undesired results, I want to be able to rollback the system to its original state. What is the best way to do that? Often, I won't have, or be able to find, packages for the current installed versions. I.e. If I haven't upgraded postgres for 2 years, it may be that I can no longer find a package for the version I am currently running. The 'rollback' feature of rpm and yum [1] looks promising, but I have a few concerns with it: a) why isn't the --rolback switch described in either the man page for rpm or the output from --help? This makes me think the --rollback switch is deprecated or otherwise unofficial. b) how can I trim/purge the 'repackaged' rpms that by default go in /var/spool/repackage [2]? I don't want to just leave them there forever, but if I trim/purge/delete them, how will the rpm database be updated to know that it can no longer rollback to the date that they were installed? AtDhVaAnNkCsE [1] http://www.freedomit.co.nz/kb-centos/enabling-yum/rpm-rollback [2] http://www.linuxjournal.com/article/7034?page=0,1 -- Jon Detert Sr. Systems Administrator Infinity Healthcare Milwaukee, Wisconsin 414-290-6759

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Re: [CentOS] Eth1 problem on CentOS-6.3
by James B. Byrne 15 Aug '12

15 Aug '12

On Wed, August 15, 2012 09:26, m.roth(a)5-cent.us wrote: > > My eyes uncrossed, and I saw, buried in there, the firstlink, above, > and the last. You might want to see if a) the 8168d firmware patch > will work on that card; b) vhost - it's a virtual host? perhaps it's > trying to load the firmware patch to the real NIC, and as a guest > VM, it doesn't have rights? > vhost is a kvm host system, not a virtualized guest. As I wrote elsewhere, I installed the kmod package from elrepo that handles this device, which solution I believe you may have originally suggested to me. In any case, that seems to have solved the problem (fingers crossed). Thanks for the help. I appreciate it very much. Sorry about your eyes. But when things are totally unfamiliar to me I hesitate to trim error logs lest out of ignorance I remove what is really important. -- *** E-Mail is NOT a SECURE channel *** 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] [SOLVED] (maybe) Eth1 problem on CentOS-6.3
by James B. Byrne 15 Aug '12

15 Aug '12

I seem to have resolved this issue by installing the alternate kernel module for this chip set available from elrepo. # /sbin/lspci -nn | grep -i net . . . 01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 03) . . . # /sbin/lspci -n | grep '01:00.0' 01:00.0 0200: 10ec:8168 (rev 03) Using the the device id (10ec:8168) to search: http://elrepo.org/tiki/DeviceIDs shows that this matches: r8168.ko pci 10EC:8168 kmod-r8168 # yum whatprovides kmod-r8168 . . . kmod-r8168-8.031.00-1.el6.elrepo.x86_64 : r8168 kernel module(s) Repo : elrepo Matched from: . . . # yum install kmod-r8168 . . . Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package kmod-r8168.x86_64 0:8.031.00-1.el6.elrepo will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: kmod-r8168 x86_64 8.031.00-1.el6.elrepo elrepo 73 k Transaction Summary ================================================================================ Install 1 Package(s) Total size: 73 k Installed size: 533 k Is this ok [y/N]: y Downloading Packages: . . . This seems to have cleared up the problem on both hosts but, only time will tell. -- *** E-Mail is NOT a SECURE channel *** 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-announce Digest, Vol 90, Issue 9
by centos-announce-request＠centos.org 15 Aug '12

15 Aug '12

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://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-2012:1156 Moderate CentOS 6 kernel Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 15 Aug 2012 04:21:07 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2012:1156 Moderate CentOS 6 kernel Update To: centos-announce(a)centos.org Message-ID: <20120815042107.GA19050(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2012:1156 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-1156.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 401fe56789a69f3ca2c7f327dca1bedbe3e122b86233f178f7bd47f778c0adb1 kernel-2.6.32-279.5.1.el6.i686.rpm f7f4959375076ce578db837cff336b5ddcdeed1f72ee5e4dbf1475a8f5fad4af kernel-debug-2.6.32-279.5.1.el6.i686.rpm 4902e0cf5cee8c2fa7314db34498d612abe5e3db22d76cd6e02755f21f0d41ef kernel-debug-devel-2.6.32-279.5.1.el6.i686.rpm 780a2a8ab3b0d2b559179e171edcb1f6c58d15b7c6ce514273699dcdf1ecb19f kernel-devel-2.6.32-279.5.1.el6.i686.rpm 14aa1fc5cfa421605236ebb4e79aa4ef0b4dde974255398dd3b50932f581c1a6 kernel-doc-2.6.32-279.5.1.el6.noarch.rpm 4e4bc121b137cc83dfe9c9ca5497f7fbf1daca41e2668128accd06cc550fe04e kernel-firmware-2.6.32-279.5.1.el6.noarch.rpm f2d9d272cb1bcf13f821b0b1be2943753a135c33c43cb92642f38c05db461b50 kernel-headers-2.6.32-279.5.1.el6.i686.rpm 71daaf6e22b7f5a71c0d836875c3a1101b5d071c7cebed79b73b5a8244f98ec9 perf-2.6.32-279.5.1.el6.i686.rpm f00d8c073dfe7b88e9f7caded9be261f8ebc45356c35692554624b8fa713bd98 python-perf-2.6.32-279.5.1.el6.i686.rpm x86_64: fdfb26523bcc4ca77ecdd182d31d78d83b866d1283b3dfc624c34e70f69bd61b kernel-2.6.32-279.5.1.el6.x86_64.rpm bdf821479037c870f2a926fd55509af7ad88cd5c2d312497e61530d0d43f2438 kernel-debug-2.6.32-279.5.1.el6.x86_64.rpm 2c9c0a7d50378f70ac80582cb5636d2b36d9fb8615b4b72ea2fc2df889b5656e kernel-debug-devel-2.6.32-279.5.1.el6.x86_64.rpm 6ad2ed5933e22186c4e97c64ffd0ddfbded48dea2ba5f3291e47963127c56a34 kernel-devel-2.6.32-279.5.1.el6.x86_64.rpm 29319bb3c31c5ee6d370d0da82a51851f24e54688136104c2694b8b0365adcc6 kernel-doc-2.6.32-279.5.1.el6.noarch.rpm 1e144afd01a3be84b9e698dedbe4cd95fc99025f23e583ac7498ac3568dc86b6 kernel-firmware-2.6.32-279.5.1.el6.noarch.rpm f5bc0117e4371037084181e899b40b6da53e0666d932ba9aacf0950a400cda8d kernel-headers-2.6.32-279.5.1.el6.x86_64.rpm 2394f7b0fa0de3b86d21e9903f6886323fd42ce7ab1f8f3f3a8a52723eb37c75 perf-2.6.32-279.5.1.el6.x86_64.rpm d9702f2bf017d839e9923df390b31e3e75bca11613672d8c620fe19eb8971f16 python-perf-2.6.32-279.5.1.el6.x86_64.rpm Source: 2dbace349e15081cbd991c5890958e6a4efcc544de2a04eb7cf5b4cb58d614fe kernel-2.6.32-279.5.1.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 90, Issue 9 **********************************************

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Re: [CentOS] Eth1 problem on CentOS-6.3
by James B. Byrne 15 Aug '12

15 Aug '12

On Wed, August 15, 2012 09:15, Reindl Harald wrote: > did you read the output you posted? > http://lmgtfy.com/?q=unable+to+load+firmware+patch+rtl_nic%2Frtl8168d-1.fw r8169 0000:01:00.0: eth1: invalid firwmare > r8169 0000:01:00.0: eth1: unable to load firmware patch > rtl_nic/rtl8168d-1.fw (-22) I cannot seem to find a fix for this even given the references provided. However, I have discovered that eth1 has problems on the second host as well, it just does not generate the same messages: [root@vhost02 ~]# grep eth /var/log/messages Aug 13 17:10:18 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 13 17:16:19 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 14 11:23:39 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 14 11:23:41 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 14 11:37:42 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 14 11:37:44 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 14 11:38:51 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 14 11:38:53 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 14 11:40:17 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 14 11:40:19 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 14 11:40:50 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 14 11:40:52 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 14 15:26:20 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 14 15:26:22 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 05:28:39 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 05:28:42 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 05:40:32 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 05:40:34 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 05:47:34 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 05:47:36 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 05:48:21 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 05:48:23 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:16:53 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:16:54 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:18:35 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:18:37 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:22:27 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:22:29 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:31:36 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:31:38 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:40:27 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:40:29 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:41:40 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:41:42 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 06:49:39 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 06:49:41 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:01:59 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:02:01 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:04:08 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:04:10 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:07:28 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:07:30 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:09:54 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:09:56 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:12:07 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:12:09 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:13:58 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:14:00 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:17:04 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:17:06 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:20:14 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:20:16 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 07:29:28 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 07:29:30 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 09:31:56 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 09:31:58 vhost02 kernel: r8169 0000:01:00.0: eth1: link up Aug 15 09:33:18 vhost02 kernel: r8169 0000:01:00.0: eth1: link down Aug 15 09:33:20 vhost02 kernel: r8169 0000:01:00.0: eth1: link up So, my questions are: What is the problem and how do I fix it for both hosts? -- *** E-Mail is NOT a SECURE channel *** 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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Trying to change subscription optin
by Ed Gurski 15 Aug '12

15 Aug '12

I am trying to change my subscription option to a daily digest but am unable to log in to change my options.... -- Ed Gurski (ed(a)gurski.com) Registered Linux User 458454

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iscsi storage, LACP or Multipathing | Migration or rebuild?
by Götz Reinicke 15 Aug '12

15 Aug '12

Hi, I do have one iscsi storage with 4 GBit nics of which currently only one is configured with an ip and which is in productive use by one cent os 6.3 server. Doing some research brought me to the idea to use some nic bonding or multipathing for that storage, but multipathing I did about four or five years ago only once :) Furthormore I can't find the ultimate answer (may be there is not such) what will be better for us: bonding or multipathing. The storage is used for backup; it's connected to an backupserver which pulls data from different servers ... may be at the same time or one after an other. The server uses two bonded nics to the LAN. My question regarding the setup is, what might be good or better: bonding or multipathing. We'd like to increase performance and nic failover if one link breaks. If multipathing is to be preferred, is it possible to preserve the data currently saved on the storages ext4? And googling shows up a lot of different how tos and the redhat doc; but I din not found one describing a straight forward setup. So thanks a lot for any suggestion or comments! Regards . Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 82 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Jürgen Walter MdL Staatssekretär im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt

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Re: [CentOS] Eth1 problem on CentOS-6.3
by James B. Byrne 15 Aug '12

15 Aug '12

On Mon, August 13, 2012 18:48, Ned Slider wrote: > On 13/08/12 19:50, James B. Byrne wrote: >> >> On Mon, August 13, 2012 10:37, Ned Slider wrote: >> >>> Faulty hardware maybe? Try a reboot and see if it reappears. If >>> it's >>> located on a card try reseating the card (although I suspect this >>> is >>> an integrated NIC on the motherboard?). >>> >>> The chipset is not necessarily the same in the second example >>> (different revision); RTL8111/8168B is not RTL8168d/8111d. They >>> probably do use the same driver but I'd need to see the >>> Vendor:Device ID pairing to know for sure. >> >> >> Eth1 is an xpci card sold by StarTech. A system with an identical >> card reports this: >> > > OK, I'd definitely try reseating the card and if you still get no joy > I'd swap it out for a replacement. > >> for BUSID in $(/sbin/lspci | awk '{ IGNORECASE=1 } /net/ { print $1 >> }'); do /sbin/lspci -s $BUSID -m; /sbin/lspci -s $BUSID -n; done I swapped the suspect card and rebooted the host. After some fussing about with udev I managed to get the new card recognized as eth1 (vice eth2 as udev kept insisting). I will do a transfer test later today and see if it stays up. The original failed in the midst of an sftp transfer. -- *** E-Mail is NOT a SECURE channel *** 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] Good Anti-virus for Linux desktops and servers
by Adam Tauno Williams 15 Aug '12

15 Aug '12

On Wed, 2012-08-15 at 12:47 +0100, Nux! wrote: > On 14.08.2012 14:06, Adam Tauno Williams wrote: > > On Tue, 2012-08-14 at 07:28 +0100, Nux! wrote: > >> On 13.08.2012 22:46, Gregory Machin wrote: > >> > Hi. > >> > Thanks for the feed back. > >> Why not Clamav? > >> It has othe n-access thingy as well. > >> http://www.clamav.net/doc/latest/html/node21.html > > "you shouldn't run Dazuko on production systems" > > But, if your clients are Windows boxes via Samba, you can perform > > on-demand file access via Samba + CLAMAV using a VFS module. This > > works > > very well. Then files detected to contain malware cannot be read or > > saved, and the administrator can be notified. > > I don't think that really helps the LINUX desktop however. > Thanks for the tip with the VFS. Not much of a Samba user here, but > definitely good advice for the future. > Searching a bit reveals multiple ways of using this VFS feature; do you > have a recommended way of doing it? The examples are pretty straight-forward. Just make sure you are looking at docs for samba-virusfilter and not the older docs for samba-vscan. <http://www.whitemiceconsulting.com/2011/11/samba-vscan-is-dead-long-live-sa…> <http://www.whitemiceconsulting.com/2011/11/samba-virusfilter-013-released.h…>

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Discuss August 2012