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Newsletter feedback
by Geerd-Dietger Hoffmann 26 Oct '09

26 Oct '09

Hey We have now published the sixth version of the Newsletter and I think it is time to ask YOU ( the reader ) what we can improve. The current trend is away from really technical details more to a light read and entertaining stuff. Is this a good way to go. Or should we focus more on the technical side again*. Or is the balance right? What do you want to read about? What sections do you want? Or just comment. I am happy about any constructive criticism. I hope you are enjoying the Newsletter. Cheers Didi *Of course the we will not become a only fun Newsletter. ---- My www page: www.ribalba.de Email / Jabber: ribalba(a)gmail.com Skype : ribalba

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Upgrading CentOS 5.3 from local mirror
by Jonathan Moore 26 Oct '09

26 Oct '09

Good afternoon folks. Earlier today, I started upgrading a few of our servers to 5.4 based on input from the list. So far, all has gone well. I have about 6 servers (not very many, but still) that need to be upgraded. Instead of taking precious bits from the mirrors for each upgrade, I was curious if I could rsync the 5.4 directory from a local mirror, and configure yum to use that repo, if it would upgrade without issues? Would I need anything other than the 5.4 folders to do the upgrade? -jonathan

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CentOS-announce Digest, Vol 56, Issue 7
by centos-announce-request＠centos.org 26 Oct '09

26 Oct '09

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-2009:1522 Moderate CentOS 4 i386 kernel - security and bug fix update (Tru Huynh) 2. CESA-2009:1522 Moderate CentOS 4 x86_64 kernel - security and bug fix update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Mon, 26 Oct 2009 15:31:26 +0100 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2009:1522 Moderate CentOS 4 i386 kernel - security and bug fix update To: centos-announce(a)centos.org Message-ID: <20091026143126.GA2862(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2009:1522 kernel security update for CentOS 4 i386: https://rhn.redhat.com/errata/RHSA-2009-1522.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/kernel-2.6.9-89.0.15.EL.i586.rpm updates/i386/RPMS/kernel-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-devel-2.6.9-89.0.15.EL.i586.rpm updates/i386/RPMS/kernel-devel-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-hugemem-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-hugemem-devel-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-smp-2.6.9-89.0.15.EL.i586.rpm updates/i386/RPMS/kernel-smp-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-smp-devel-2.6.9-89.0.15.EL.i586.rpm updates/i386/RPMS/kernel-smp-devel-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-xenU-2.6.9-89.0.15.EL.i686.rpm updates/i386/RPMS/kernel-doc-2.6.9-89.0.15.EL.noarch.rpm source: updates/SRPMS/kernel-2.6.9-89.0.15.EL.src.rpm You may update your CentOS-4 i386 installations by running the command: yum update kernel\* Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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mismatch_cnt after 5.3 -> 5.4 upgrade
by Devin Reade 26 Oct '09

26 Oct '09

Saturday I did an upgrade from 5.3 (original install) to 5.4. Saturday night, /etc/cron.weekly reported the following: /etc/cron.weekly/99-raid-check: WARNING: mismatch_cnt is not 0 on /dev/md0 md0 holds /boot and resides, mirrored, on sda1 and sdb1. md1 holds an LVM volume containing the remaining filesytems, including swap. The underlying hardware is just a few months hold, has passed the usual memtest stuff, and has been running 5.3 well for a few months. I'm *guessing* that due to the timing, this is related to the upgrade. I have to admit that I forgot myself and instead of doing the glibc updates as recommended, I only did: yum clean all yum update yum rpm -e --nodeps perl-5.8.8-18.el5_3.1.i386 (see today's perl thread) yum update perl.x86_64 yum update shutdown -r now I've taken a backup of /boot dump after the upgrade, but have not yet reenabled normal backups. My hunch is that something in the upgrade process touched sda1 but not sdb1, and that removing sdb1 from the mirror and reattaching it for resync would be sufficient, however I was looking for comments on this from anyone with experience or opinion on the matter. Googling the issue doesn't seem to turn up any recent related results. Also, could the upgrade have touched the bootblock on sda1 but not sdb1 and thus trigger this problem? Devin -- A zygote is a gamete's way of producing more gametes. This may be the purpose of the universe. - Robert Heinlein

6 7

Help! i want to clone my Centos machine to another box..
by RoLaNd RoLaNd 26 Oct '09

26 Oct '09

Hello all, i've spent the last week trying to find something that will clone my existing Centos server to a more powerful box. i've used clonezilla though that resulted in a complete failure.. can anyone please guide me in the right direction? all i want to do is to clone my entire server and all of it's directories to a more powerful server so i start using it instead.. i dont want to get rid of the current server as i want both of them to run in parallel with the same backed up services/data on each of them.. can anyone please help! im honestly desperate!! best, Roland _________________________________________________________________ Windows Live Hotmail: Your friends can get your Facebook updates, right from Hotmail®. http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/so…

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FYI: centos 5.4 and xen not working
by Farkas Levente 26 Oct '09

26 Oct '09

hi, i just let you know that xen not working properly in centos 5.4 there are upstream fix for this, but for those who use xen it's better to wait until centos release updates for 5.4 otherwise xen's domU won't start. -- Levente "Si vis pacem para bellum!"

4 4

weird mac address
by Janez Kosmrlj 26 Oct '09

26 Oct '09

Hi, I have an interesting problem. I have a centos server connected to our dmz zone. For security reasons our network department limited the number of mac addresses that can connect to the port on the switch. And since we are running vmware server on top on centos and a windows virtual machine inside of it, the number of mac addresses that can connect to this port is two or the switch blocks all traffic on this port. And now comes the problem. The port blocks almost immediately. After some investigation we found out, that we have actually 3 addresses communicating from this port. One that belongs to eth-0 and is ibm specific (the server is an IBM x3550 and every mac starts with the vendor code), one that belongs to the virtual machine and is Vmware specific and then we have another mac address that is IBM specific. I can't find where this traffic comes from. I traced the traffic with Wireshark and found, that this mac address creates a DHCP discover every 64 seconds. I first checked if this mac adress could be from the second network card, that is not connected with a cable nor is the device enabled, but it doesn't and the mystery mac is completely different from the network cards macs on the last 6 characters (the two on-board cards macs are different only on the last character). Then I tried searching the logs and /etc for any occurrence of this mac address, but I can't find anything. Then we tried to isolate the server, so I connected it directly to my laptop and run the trace again to see if this packet comes from outside and is then redirected back out on Vmware's virtual switch (since it's a broadcast packet, this could be somehow possible). But everything indicates that this packets are generated on this server. In the meantime we increased the number of mac addresses to 3, but after a while we got a packet from a fourth IBM mac address, that again doesn't belong anywhere. It was similar to the mystery mac (it was only different on the last two characters) and the switch blocked the port in the middle of the night. but this was a one-time occurrence for now. Does anyone have an idea what is happening or where i should look for the mystery mac address. thanx Janez

1 0

XFS might be available for i686 from the CentOS Plus repository.
by Rainer Traut 26 Oct '09

26 Oct '09

Hi, the topic is an excerpt of the 5.4 release notes and raises a question. I have a i386 server here, that has been running for nearly two years with xfs module from extras repo. When lookin at the module it was build against 2.6.18-92.1.13.el5. Question is, is it still safe to use this module with 5.4? Or should I switch back to a CentosPlus kmod and an older kernel? Rainer

2 2

OT: pager pay
by Alan McKay 26 Oct '09

26 Oct '09

Hey folks, I'm trying to compare my small company's policy against other companies out there. We pay 10% of your per-hour salary equivalent per every hour you carry it, whether it goes off or not. So for example someone making $55K/year works out to about $27 / hour (I think), so they'd get $2.70 for every hour they carry the pager outside of regular work hours. We are a company of about 25 people. My old employer Nortel still does it this way : - $27.50 for every 8 hour shift you carry it, outside of regular work hours. - any page is billed at time-and-a-half, minimum 1 hour billed - any page requiring you to go into work, is billed at time-and-a-half with a 3 hour min I have a buddy at IBM and while it varies by group, his group does this : - $30/day for carrying it, whether it goes off or not - every page gets billed at time-and-a-half, minimum 30 minutes Anyone else want to share theirs? thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

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CentOS DS Transition Issue
by Camron W. Fox 26 Oct '09

26 Oct '09

Alle, We are looking to transition from OpenLDAP to CentOS DS. We currently using OpenLDAP V2.3.43-3 with both RHEL 5.4 and Solaris10 clients (auth/netgroup/automount). We restrict user login access to the RHEL and Solaris machines using netgroups. After configuring the CentOS DS, we noticed that while the RHEL restrictions using the /etc/pam.d/system-auth-ac and /etc/security/access.conf configurations worked correctly, the Solaris clients using +@netgroup in /etc/passwd, passwd_compat in /etc/nsswitch.conf and the appropriate /etc/pam.conf configs do not respect the restrictions. The client configurations have not changed, only the LDAP server. I know this is a long shot, but has anyone else come across this issue? Best Regards, Camron -- Camron W. Fox Hilo Office High Performance Computing Group Fujitsu Management Services of America, Inc. E-mail: cwfox(a)us.fujitsu.com

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