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34753 discussions

Trying to justify CentOS vs. RHEL
by Bidwell, Christopher 08 May '13

08 May '13

Hi all, I'm in the process of moving all of my RHEL systems over to CentOS but the argument that fires back at me is for critical vulnerabilities for items such as zero-day exploits and such. >From what I've been reading, RHEL releases critical patches much quicker than CentOS which makes sense since CentOS is simply a copy and when changes occur they propagate down to the RHEL clones. My question is what kind of time frame are we looking at when a vulnerability (critical or high) is announced and a patch has been released for RHEL does it get implemented into CentOS? Thanks! Chris

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ECC memory errors
by Peter Peltonen 07 May '13

07 May '13

I started to receive this kind of messages a few days ago on one of my servers: Message from syslogd@ at Mon Apr 29 08:02:55 2013 ... server1 kernel: EDAC MC0: UE row 0, channel-a= 0 channel-b= 1 labels "-": (Branch=0 DRAM-Bank=0 RDWR=Read RAS=0 CAS=0, UE Err=0x2 (Aliased Uncorrectable Non-Mirrored Demand Data ECC)) I've never had ECC memory to fail on me before, so now I am wondering the following: * The server is running CentOS 5.7 and is acting as Xen dom0. Is there any possibility this could be a kernel issue and upgrading would help, or would upgrading at this point just cause more trouble? * Is there now a possibility that my data can get corrupt: should I shutdown the server as soon as possible or can I keep running until I replace the memories? * This server has been running for several years in a datacenter without problems: what are your experiences, are these kind of problems most likely caused by a failing motherboard or the memories? Regards, Peter

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dual head on centos 5 and ancient Nvidia Quadro NVS280SD card
by Fred Smith 07 May '13

07 May '13

I was just handed a 2nd monitor for my system at work, and using Centos 5 (latest) can't make dual head work. a good bit of googling isn't being particularly helpful either. It's a HP workstation xw4100, with Nvidia Quadro NVS280SD graphics card. Enabling dual head in the "display" app simply configures X so that it (i.e., X) won't start. I haven't found the x log file in /var/log to be helpful, either. This is using the legacy 96.x.x driver from Nvidia. the NvidiaDetect app (from epel) says it should be using a newer driver than the 96.x.x (forgot which one, exactly) but when attempting to install it I get a msg that the card requires a 96.x.x driver. browsing to nvidia.com and entering the model numbers into their driver finder app gives another newer version that also gives the same result. So it looks like I'm stuck with the 96.x.x driver. some googling indicates a few people have made it work, but none of their methods are working for me. I was beginning to wonder if the hardware even supported dual head, so I booted up a Fedora 17 LIVE CD. it initializes both monitors with no action from me at all, with a desktop spanning the two screens, just fine. It must be using the Nouveau driver (which, AFAIK, can't be used on Centos 5), so still the issue could either be spanning/dual head doesn't work with the ancient nvidia driver, or we (neither me, nor the tools on Centos) knows how to configure it. Clues would be appreciated. thanks in advance! -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- The Lord detests the way of the wicked but he loves those who pursue righteousness. ----------------------------- Proverbs 15:9 (niv) -----------------------------

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deleting Cyrus mailbox with empty name
by Tilman Schmidt 07 May '13

07 May '13

A junior administrator of mine mistakenly created a mailbox with an empty name, by typing into cyradm the commands: createmailbox user/$lb setquota user/$lb 10000 He will of course shortly receive an extra lesson on shell variables, but meanwhile I find myself confronted with the problem how to get rid of the mailbox he created. So far all attempts have failed: [cyrus@posthamster ~]$ /usr/lib/cyrus-imapd/quota Quota % Used Used Root 0 user/ 0 user/ 10000 [...] [cyrus@posthamster ~]$ ls -l /var/spool/imap/user/ total 2180 drwx------. 2 cyrus mail 4096 Oct 1 2012 drwx------. 2 cyrus mail 4096 May 7 08:53 10000 [...] [cyrus@posthamster ~]$ cyradm -u cyrus localhost IMAP Password: localhost> sq user/$lb localhost> dm user/$lb deletemailbox: Permission denied localhost> lam user/$lb "" lrswipkxtecda localhost> sam user/$lb cyrus all usage: setaclmailbox mailbox id rights [id rights ...] localhost> sam user/"" cyrus all setaclmailbox: cyrus: lrswipkxtea: Mailbox does not exist localhost> sam user/ cyrus all setaclmailbox: cyrus: lrswipkxtea: Mailbox does not exist localhost> lam user/ Mailbox does not exist localhost> lam user/"" Mailbox does not exist localhost> ^D [cyrus@posthamster ~]$ ls -l /var/spool/imap/user/ total 2180 drwx------. 2 cyrus mail 4096 Oct 1 2012 drwx------. 2 cyrus mail 4096 May 7 08:53 10000 [...] Obviously the handling of undefined variable substitution in cyradm is somewhat inconsistent, preventing me from deleting the mailbox the same way it was created. Any ideas? TIA T.

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CentOS-announce Digest, Vol 99, Issue 2
by centos-announce-request＠centos.org 07 May '13

07 May '13

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. CEBA-2013:0787 CentOS 5 clustermon Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 6 May 2013 17:40:06 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2013:0787 CentOS 5 clustermon Update To: centos-announce(a)centos.org Message-ID: <20130506174006.GA28090(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:0787 Upstream details at : http://rhn.redhat.com/errata/RHBA-2013-0787.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 94f5bb46931c91f24023399c7e9777b2ee925551f4fb46f955e7b96c5457759a cluster-cim-0.12.1-8.el5.centos.i386.rpm 870063f68260224d91d8069f4b44e8b26b2d8a40e00abb37236bc36ac6b07476 cluster-snmp-0.12.1-8.el5.centos.i386.rpm 8560b82eae19c25ac680be41570062251ac665dbdd75fbe381a53e8405ef54cf modcluster-0.12.1-8.el5.centos.i386.rpm x86_64: 15b2f7c058b5f7ce67fed194599c76d7f0f89240c81a8b965561b9fd50694456 cluster-cim-0.12.1-8.el5.centos.x86_64.rpm c015b6ecf416a588c54e93bc2878de8ae574bf9af15e4689fec6256921f9dd06 cluster-snmp-0.12.1-8.el5.centos.x86_64.rpm b0211985abb13c626325b4f312656905d1e10bcfaa399ec6d54d06770632e939 modcluster-0.12.1-8.el5.centos.x86_64.rpm Source: 2cfd50156a9e7ef39fff24cfb5f394623c60cd37689c65284fba53dfdf737af3 clustermon-0.12.1-8.el5.centos.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 99, Issue 2 **********************************************

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Strange Postfix problem
by tdukes＠palmettoshopper.com 06 May '13

06 May '13

Hello, Was trying to setup postfix on my home PC. Running Centos 6.4. I don't have a static IP and use zoneedit and ddclient to keep my installation of zoneminder current. So I decided I wanted to get zoneminder to send me email alerts. Sent some test messages but none were sent. I went to webdnstools website thinking maybe there is a dns or network problem. When it checks my dns setup, everything is fine except the mail server is has the wrong IP address. The A record and the www A record have the correct IP. The IP address its reporting is one that belongs to my ISP. TIA

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mplug.org repo is down
by Emiliano Mariño 06 May '13

06 May '13

Hello dear list, Does anybody know if mplug.org will be back? That was the only k21linux repo I know about, and it is down since last week :S Regards, Emiliano

1 0

unprivileged users rebooting at console
by Joseph Spenner 06 May '13

06 May '13

I'm curious why any user logged in at the console can issue the 'reboot' command and reboot the system. I've tested/verified this to work, and read some older posts about this. If it were a bug, I suspect it would be fixed by now. Also, if a user is logged into the console, and then logs in via ssh from another system, that user can also reboot the system from that ssh connection. It would seem that once a user authenticates on the console, and remains on the console, they can reboot from any other/new tty. Once they drop off the console, the ssh connections can no longer reboot. If this is by design, why? Thanks! Regards, Joseph Spenner --- If life gives you lemons, keep them-- because hey.. free lemons. "~heart~ Sticker" fixer: http://microflush.org/stuff/stickers/heartFix.html

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CentOS 5 netinstall problem
by Phil Dobbin 06 May '13

06 May '13

Hi, all. I'm attempting to install CentOS 5 via netinstall from <mirror.centos.org/centos/5/os/i386> & it gets as far as formatting the disk but when it gets to: 'Starting install process. This may take take several minutes...' it hangs forever (well, a couple of hours). Dropping down in a console I see it's telling me: 'Preparing to install' then nothing. 'top' shows activity for Anaconda but very little. This is on an old Poweredge 650 with 3GB's of RAM on a secondary drive. The primary drive has CentOS 6.4 running on it quite happily so the hardware's up to it. I chose to install the 'Server GUI' packages because I was curious. Maybe herein lies my problem? Any help appreciated. Cheers, Phil... -- currently (ab)using CentOS 5.9 & 6.4, Debian Squeeze & Wheezy, Fedora Beefy, Spherical & That Damn Cat, Lubuntu 12.10, OS X Snow Leopard & Ubuntu Precise, Quantal & Raring GnuPG Key : http://www.horse-latitudes.co.uk/publickey.asc

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Problem with D-BUS Centos 6.4
by AJH 06 May '13

06 May '13

Hello, I hope anyone at the list could help me... I like to open a notify by using "/usr/bin/notify-send" in my .procmailrc. Should show a notify if a new mail arrive. My script which creates that notify-send is working and if I test it everything works fine. So I inserted it into my .procmailrc, i looks like that: | perl /opt/sbin/mailnotify.pl I like to grep my mail into my script which creates the notify-send... If procmail triggers that script this messages comes up into the logfile of procmail: --- process 6975: D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/var/lib/dbus/machine-id": Permission denied See the manual page for dbus-uuidgen to correct this issue. D-Bus not built with -rdynamic so unable to print a backtrace --- OK..I searched in the internet about that problem and found out that: http://www.torkwrench.com/2011/12/16/d-bus-library-appears-to-be-incorrectl… But if i do that and insert: "dbus-uuidgen > /var/lib/dbus/machine-id" this is not the solution of my problem...the same happens again. so my question: could anyone tell my what I do wrong? -- thanks + bye ajh

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