Discuss March 2008

discuss@lists.centos.org

300 participants
373 discussions

portmap not answering
by Kai Schaetzl 27 Mar '08

27 Mar '08

CentOS 5 updated, Xen host. The portmap on this machine is somehow "stuck" and I can't figure out why. I enabled it to be able to mount a remote nfs share. The first hurdle was that "portmap" didn't appear in the chkconfig list, it was installed with the initial packages but not added to chkconfig. Took me a while to figure this out. Adding and starting it up is no problem. But nfs still doesn't work and when I try rpcinfo -p that just hangs until it finally times out after a long while (rpcinfo to another machine is fine). An strace at that time indeed shows that it is stuck trying to connect to port 111 on localhost. Same when I try to connect with telnet. Port 111 shows up on lsof UDP and TCP and there's no error when portmap starts up. There's nothing in iptables or hosts.deny that could prevent a connect. SELinux is permissive. What could block those connects? Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com

3 7

how do I create a custom CD from an existing CD?
by Rudi Ahlers 27 Mar '08

27 Mar '08

Hi all This may sound funny, but I can't get onto any websites right now, so I can't even google. I want to customize the contents of my CentOS 5.1 x64 CD, and re-create the ISO to write to CD again and install on a server. I know it's got something todo with mkisofs, but I'm not 100% sure what the commands should look like Can someone please give me a sample of the whole command needed for such an operation? -- Kind Regards Rudi Ahlers CEO, SoftDux Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stugg

4 6

Postfix - Maildir - MySQL - Cyrus Imap - Sieve
by Tom Brown 27 Mar '08

27 Mar '08

I would like to use the above config, i think. Can cyrus-imap work nicely with Maildir ? If so is there one available thats configured with msql support? In the past i have used courier-imap but ideally i want to use sieve thanks

4 8

Commands failing silently?
by Dan Bongert 27 Mar '08

27 Mar '08

Hello all: I have a couple CentOS 4 servers (all up-to-date) that are having strange command failures. I first noticed this with a perl script that uses lots of system calls. Basically, sometimes a command just won't run: thoth(52) /tmp> ls thoth(53) /tmp> ls thoth(54) /tmp> ls thoth(55) /tmp> ls learner lost+found/ thoth(56) /tmp> ls learner lost+found/ thoth(57) /tmp> ls learner lost+found/ thoth(58) /tmp> ls learner lost+found/ thoth(59) /tmp> ls learner lost+found/ thoth(60) /tmp> ls learner lost+found/ thoth(61) /tmp> ls learner lost+found/ thoth(62) /tmp> ls thoth(63) /tmp> ls thoth(64) /tmp> ls thoth(65) /tmp> ls thoth(66) /tmp> uname -a Linux thoth.ssc.wisc.edu 2.6.9-67.0.7.ELsmp #1 SMP Sat Mar 15 06:54:55 EDT 2008 i686 i686 i386 GNU/Linux Nothing in either dmesg or /var/log/messages seems to indicate any problems. It also doesn't seem to matter what the command is -- ls is the quickest test, but sshd will sometimes to fail to spawn children, etc. There aren't a large amount of processes on the machine either -- only 122 at the moment. Has anyone seen this behavior before? Have I been hit with some sort of cunning rootkit? This machine shouldn't be publicly accessible; it's behind our firewall. Thanks. -- Dan Bongert dbongert(a)wisc.edu

8 16

Should I update to DRBD 82?
by Amos Shapira 27 Mar '08

27 Mar '08

Hello, This morning I noticed the following output from "yum update": Installing: drbd82 x86_64 8.2.5-1.el5.centos extras 209 k replacing drbd.x86_64 8.0.11-1.el5.centos As far as I'm aware DRBD works fine for me. Is there a way I can find out about the new release and weather I should upgrade? I can't figure out the CentOS issue tracking system at bugs.centos.org but a google site search came up with http://bugs.centos.org/print_bug_page.php?bug_id=2657 (a DRBD 82 tracker bug with empty reports), which makes me feel like this version of the package is not 100% trusted. So - should I upgrade it or not? Generally, I try to stick to the "standard" as much as I can, but the text in http://wiki.centos.org/Repositories gives an impression that "if it's in Extras, it's well tested". Thanks, --Amos

4 7

Anyone still uses "MO drive"?
by Fajar Priyanto 27 Mar '08

27 Mar '08

Hi all, I'm trying to use an old MO drive in Centos5.0. It's connected to an adaptec scsi card. From dmesg, the card seems to be recognized, but it doesn't "create" the sda device from the MO drive. Is there any more steps I must do? From Yahoo search (since it has older archive than google), it seems that Linux should be automatically recognize and setting up the scsi card and the MO drive. So, I'm clueless here. Any pointer is great. Thanks. -- Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial http://linux2.arinet.org 09:37:09 up 2:02, 2.6.22-14-generic GNU/Linux Let's use OpenOffice. http://www.openoffice.org The real challenge of teaching is getting your students motivated to learn.

1 1

Widescreen monitor with Intel G965 graphics chipset
by Joseph L. Casale 26 Mar '08

26 Mar '08

I just migrated my working Fedora Core 8 desktop to CentOS 5.1 and went from my nice 1680x1050 resolution to 1280x1024. I have made all the possible xorg.conf changes I found on the net to no avail. I tried system-config-display –reconfig and it allows me to pick the resolution but reverts back to 1280x1024 in X? Anyone know what might need to be done in CentOS for this to work? The skewed aspect ratio drives me nuts☺ Thanks! jlc

2 5

Two Internet connections...
by Frank Cox 26 Mar '08

26 Mar '08

I do some occasional tech work for a cable TV/Internet service provider. They have now offered me free services, including cable Internet. I currently have a DSL service through the telephone company and, for several reasons including the fact that it is really unlimited service with no cap and it comes with newsgroup access (neither of which the cable service has), I'm not really prepared to give that up. However, since I can get a free cable Internet service too I would like to be able to put that to use. Does anyone have any good ideas for what to do with an extra cable Internet service? Is there, say, a way to somehow "shotgun" two Internet services like you used to be able to do with dial-up modems to increase your transmission speed? -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

7 14

RE: [CentOS] System Rebooted by 2.6.18-8.1.8.el5
by Bowie Bailey 26 Mar '08

26 Mar '08

Greg Bailey wrote: > > Is there any chance someone could have hit the ctrl-alt-delete key > combination on the console to trigger the reboot? I've had people do > that inadvertently thinking they were on a Windows machine... After rebooting servers 3 or 4 times that way myself, I now disable this function in /etc/inittab on all of my servers. I don't see any point in allowing a hot-key to reboot a server. -- Bowie

1 0

Monitor connections?
by Niki Kovacs 26 Mar '08

26 Mar '08

Hi, I just setup a dedicated server on OVH, and I wonder: what's the best way to monitor connection attempts? Like: folks trying to connect on various ports? Cheers, Niki

1 0

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Discuss March 2008