Discuss August 2010

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250 participants
191 discussions

CENTOS DHCP Server and windows computer/host name ISSUE
by linux-crazy 26 Aug '10

26 Aug '10

Hi list, We are running few Centos5.4 and windows 2003 instance on CENTOS XEN virtualized environment , all the guest are getting the IP/NETWORK/GATEWAY setting from the DHCP Server running on CENTOS 5 server and the DNS configured on the windows 2003 server. All of the CENTOS Guests are getting the IP and the host name as per the DNS forward look up configured. For example If the CENTOS guest1 get x.y.z.1 as an IP and it gets the host name as machine1.example.com and so on . But none of the windows guest is getting the hostname or computer name from the DHCP server even though its getting the ip from the centos DHCP server properly , instead all the windows guest are setting up the hostname or computername as ORGNAME-withsomenumbers . eg: techsoft-342156 as a computer name . See at present we are not doing any static mapping of IP/HOSTNAME based on windows GUEST MAC address. So statically mapping the hostname/ip with guest MAC address is out of question now. Is there is any configuration to be tuned on dhcpd.conf or any files or parameter to be tuned on windows 2003 guests to get the hostname from the DHCP/DNS . i heard about some option like "*dhcpd opt 12*" on windows regisrty level will do the job , But am blank how to get things done . Also is there is a way to tune CENTOS DHCP Server to lease the ip to the dhcp client in uniform order rather it leases randomly . If any one throws me some light on how to get this done it will be really great full for me . Regards, Lingu

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Help with Linux offline cached credentials on a Windows domain
by Scott Ehrlich 26 Aug '10

26 Aug '10

I have modified the native config files both Ubuntu and CentOS systems (laptops) to allow them to be added to a genuine Windows Active Directory domain. When on the network logins work fine. Take the systems off the network, and the user, even though their credentials are cached, cannot log in. There are several documented bugs on this for both Ubuntu and RedHat. Some people have posted various fixes. I tried one, the user was able to log in offline, but then could no longer log back into the network. Insights would be most appreciated. I plan to set up a test system to try various of fixes until I either a) find something that works; b) determine the problem still needs fixing with no known good solution yet found. Thanks. Scott

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Updates offered annoyance
by Aleksandar Stoisavljevic 26 Aug '10

26 Aug '10

Hi all, I downloaded latest CentOS 5.5 DVD i386 image from one of FTP's in a list. I've burned that image to DVD and created new DVD to use for fresh installations. Now when I install fresh CentOS 5.5 (in VM) I am getting info that there are 50 packages updates. This is ok when I have good internet speed (@work) but when I am home, this update takes a lot of time. I guess I can skip updates but I wasn't experiencing such annoyance with CentOS 5.4. My gues is that when CentOS 5.4 was finalized there is no updates to that DVD. Is there any suggestions ? -- Aleksandar dipl. ing. Stoisavljevic Software Developer mobile: +381 (0) 64 211 50 40 Web: http://www.staleksit.in.rs E-mail:staleks@gmail.com <E-mail%3Astaleks(a)gmail.com> SkypeId: staleks_ns Mail: Branislava Nusica 10, 21000 Novi Sad, Serbia

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process eggcups
by Jerry Geis 26 Aug '10

26 Aug '10

hi all, Just wondering how starts the process eggcups? I have done a "service cups stop" but eggcups is still running. I then do "chkconfig cups off" and reboot and its still running. How do I stop it from running? Thanks, Jerry

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System beeps in kernel 2.6.18-194
by Glenn Eychaner 26 Aug '10

26 Aug '10

Akemi Yagi amyagi at gmail.com wrote: > On Wed, Aug 25, 2010 at 2:39 PM, Glenn Eychaner <geychaner at mac.com> wrote: >> So, just today I noticed a problem with kernel 2.6.18-194 (CentOS 5.5) on several Intel DP965LT systems; the system beeps (such as terminal beeps) are no longer passed through to the external speakers. This is a problem because in our situation the boxes are distant from their monitor/keyboard, the system speaker on this motherboard is extremely weak, and there are no system speaker header pins on the motherboard. The problem goes away if I revert the system to 2.6.18-164 with no other changes. >> I looked through the list archives and searched the web for other people who have encountered this, but it's pretty specific (and hard to search for "system beep"!) > > Does it have Nvidia controllers? If so, it may be related to: > http://bugs.centos.org/view.php?id=4335 Nope. It has a PCI NVidia graphics card, but the tech specs for the board (page 12) show Intel chipsets (as expected). http://downloadmirror.intel.com/15049/eng/DP965LT_TechProdSpec.pdf Besides, I tried adding the "enable_msi=0" to that line of modprobe.conf, and it didn't make any difference. >> Is there someplace can I find *detailed* release notes on the differences between -164 and -194 kernels to help in looking for the problem, pinning it down, and submitting a patch (and/or building my own kernel), or should I just download the SRPMS and dig in? > > You can find kernel changelog diffs here (maintaind by Alan Bartlett): > http://www.centos.toracat.org/ajb/kernel-clog-diff/ Wow. Considering I need to look at everything from 164-15 to 194-3, that's a lot of heavy reading and searching. -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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System beeps in kernel 2.6.18-194
by Glenn Eychaner 26 Aug '10

26 Aug '10

So, just today I noticed a problem with kernel 2.6.18-194 (CentOS 5.5) on several Intel DP965LT systems; the system beeps (such as terminal beeps) are no longer passed through to the external speakers. This is a problem because in our situation the boxes are distant from their monitor/keyboard, the system speaker on this motherboard is extremely weak, and there are no system speaker header pins on the motherboard. The problem goes away if I revert the system to 2.6.18-164 with no other changes. I looked through the list archives and searched the web for other people who have encountered this, but it's pretty specific (and hard to search for "system beep"!) Is there someplace can I find *detailed* release notes on the differences between -164 and -194 kernels to help in looking for the problem, pinning it down, and submitting a patch (and/or building my own kernel), or should I just download the SRPMS and dig in? Thanks, -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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CentOS-announce Digest, Vol 66, Issue 7
by centos-announce-request＠centos.org 25 Aug '10

25 Aug '10

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-2010:0643 Important CentOS 3 i386 openoffice.org - security update (Tru Huynh) 2. CESA-2010:0643 Important CentOS 3 x86_64 openoffice.org - security update (Tru Huynh) 3. CESA-2010:0643 Important CentOS 4 i386 openoffice.org - security update (Tru Huynh) 4. CESA-2010:0643 Important CentOS 4 x86_64 openoffice.org - security update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Wed, 25 Aug 2010 15:52:49 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2010:0643 Important CentOS 3 i386 openoffice.org - security update To: centos-announce(a)centos.org Message-ID: <20100825135249.GA25806(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2010:0643 openoffice.org security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2010-0643.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/openoffice.org-1.1.2-48.2.0.EL3.i386.rpm updates/i386/RPMS/openoffice.org-i18n-1.1.2-48.2.0.EL3.i386.rpm updates/i386/RPMS/openoffice.org-libs-1.1.2-48.2.0.EL3.i386.rpm source: updates/SRPMS/openoffice.org-1.1.2-48.2.0.EL3.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update openoffice.org 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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i can't install centos on my poweredge 2950
by Eric Doutreleau 25 Aug '10

25 Aug '10

hi i m trying to install centos5 on my poweredge 2950 with no luck. the raid controler is LSI Logic / Symbios Logic MegaRAID SAS 1078 (rev 04) indeed all is going fine during the installation but when i reboot the server panic the first error i got is this one error mounting /dev/root on /sysroot as ext3: block device required it seems that it can't find the /dev/root devices. but when i boot in rescue mode the / partition is found without any problem. i can chroot in it i have tried with 5.5 and 5.4 x86_64 but i always got the problem. i m really stuck with that :( Does someone has an idea of what could happened?

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Re: [CentOS] Updates offered annoyance
by Lamar Owen 25 Aug '10

25 Aug '10

> My 'work' is at home (dialup). The local library is only good for > about 1.5mbits/sec (about 150kbytes/sec). I don't have enough free > disk space for a full repo on either my laptop or my desktop. While not currently supported by the main CentOS project (AFAIK), there are presto repos out there for CentOS 5. Yum presto, using deltarpms, is the solution to your problem; OpenOffice.org and KDE, in particular, delta very well indeed; I've seen (on Fedora, which has presto enabled on the main repos) 90% reductions (that is, if an update set is 500MB, you only have to download 25MB of deltarpms) and even greater in updates of these. The savings in bandwidth are substantial, and I could not imagine tracking Fedora updates on dialup without presto. See http://www.centos.org/modules/newbb/viewtopic.php?topic_id=8349

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Dovecot attack
by Timothy Murphy 25 Aug '10

25 Aug '10

It seems there was some kind of attack against dovecot on my server (CentOS-5.5) with a hundred or so logwatch entries like: ========================================= **Unmatched Entries** dovecot-auth: pam_succeed_if(dovecot:auth): error retrieving information about user admin dovecot-auth: pam_succeed_if(dovecot:auth): error retrieving information about user webmaster ========================================= I googled for this, and it seems quite a common occurrence. Basically, I'm wondering whether this is best met at the dovecot level, or at my firewall? I'm running shorewall, and I see advice to impose a time-interval between successive attempts like these, but I'm not sure of the best way to do this? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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Discuss August 2010