Discuss October 2006

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260 participants
296 discussions

Moving the Home dir to new server
by Todd Cary 28 Feb '07

28 Feb '07

I have a new Centos installation that has an empty /home dir and there are no users...just root. I want to move the home directory from another server to the new one. At this time the old /home directory has been tarred with "-prf". That will keep permissions which could be a problem. Is there a simple way to move the /home directory? And the non-system users in the password and group files? Todd -- Ariste Software 200 D Street Ext Petaluma, CA 94952 (707) 773-4523

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firefox 2.0
by Jerry Geis 02 Feb '07

02 Feb '07

Has anyone downloaded firefox 2.0 and tried it? I just did. I am very confused. I download the firefox-2.0.tar.gz Untared it and the readme.txt was one sentence. nothing useful. There is no install**** anything. The URL the readme.txt mentions to the release notes, does have a "install" link, but it doesnt say anything about actually installing. All it says in one sentence is "install firefox 2 will overwrite your existing install". I am stuck.... Has anyone else installed firefox 2 and can share. I know there is seamonkey now but it is broken for the functionality I need. I was hoping it is fixed in firefox 2.0. Thanks, Jerry

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nscd crashes
by Josh Kelley 25 Jan '07

25 Jan '07

I've had problems with nscd crashing every few days on my CentOS 4 mail server for a while now. The problems started maybe around CentOS 4.2, although I don't remember for sure. My debugging efforts let me to disable nscd's persistent cache, and that seemed to work for a while, but since upgrading to CentOS 4.4, the crashes have started again. When nscd crashes, the rest of the system becomes unreliable. Dovecot hangs when new users attempt to log in (fixed or worked around by switching Dovecot versions), and MIMEDefang (which we use for mail filtering) starts failing when it tries to process mail. A bit more information about our configuration: We use nss_ldap and pam_ldap against a failover pair of Fedora Directory Servers. nscd is also crashing on another of our servers (a fileserver) but with less regularlity; on our other servers, it works fine, even without disabling the persistent cache. Has anyone seen similar problems with nscd? Any tips for debugging it? I can use gdb, strace, etc. if I have to, but that can be time consuming, and it's hard to take the time to do that when people are yelling about the mail server being down. (Does CentOS provide debuginfo RPMs?) Thanks. Josh Kelley

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hard drive failing in linux raid
by Joseph Cheng 15 Nov '06

15 Nov '06

Hello all. I have a server with a linux software raid1 setup between two drives of the same model....one hard drive as primary ide master and second hard drive as secondary master. Now primary master hard drive is displaying a lot of SMART errors so I would like to remove it and replace with another drive....different brand but same size. Partitions are /dev/md0 till /dev/md5. I think I know what to do based on mdadm man page and this list's archives but there is no harm in confirming right? ;) From this post http://lists.centos.org/pipermail/centos/2006-April/063076.html I plan on removing the old partitions from the array like this..... mdadm /dev/mdx -r /dev/hdax. Then I will shut down the server, replace the hard drive, make the server boot from second IDE drive and hopefully boot into Centos. From there do I have to manually create each /dev/mdx partition and then re-add them like this....mdadm /dev/mdx -a /dev/hdax ? That is what I am not sure about whether I have to partiton the drive exactly like the old one or if Centos mdadm can do some magic for me with a blank drive. TIA!!

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Problem rkhunter v. 1.2.8 - CENTOS 4
by Adriano Frare 08 Nov '06

08 Nov '06

Dear Friends, I am using CENTOS 4.3 - kernel 2.6.9-42.0.2.EL with rkhunter version 1.2.8, but the rkhunter program show me problem on file /bin/kill. I compare files /bin/kill with other CENTOS 4 and it has same size. ====================== SHOE LOG =========================== Rootkit Hunter 1.2.8 is running Mon, 30 Oct 2006 12:56:44 -0200 Determining OS... Ready Checking binaries * Selftests Strings (command) [ OK ] * System tools Info: prelinked files found Performing 'known good' check... /bin/cat [ OK ] /bin/chmod [ OK ] /bin/chown [ OK ] /bin/date [ OK ] /bin/dmesg [ OK ] /bin/env [ OK ] /bin/grep [ OK ] /bin/kill [ BAD ] /bin/login [ OK ] /bin/ls [ OK ] /bin/more [ OK ] /bin/mount [ OK ] /bin/netstat [ OK ] /bin/ps [ OK ] /bin/su [ OK ] =========================================================== I guess problem is rkhunter. Thanks for help. Adriano Frare

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files in a directory limitation
by Jerry Geis 07 Nov '06

07 Nov '06

Just curious but is there a limitation on the number of files in a directory? I am using ext3. I'm not concerned about file size just the number of files. Thanks, Jerry

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CentOS on Dell Inspiron 640m laptop
by techlists＠comcast.net 04 Nov '06

04 Nov '06

I ordered and just received today a new Dell Inspiron 640m laptop (it also goes by the name E1405). Anyone tried installing CentOS on this laptop? It's the wireless drivers I'm most concerned about; it's got the Dell 1390 internal wireless card (not the Intel wireless). Anyone have some feedback, on the wireless or any other issues, on running CentOS on this laptop? Thanks Paul

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RE: [CentOS] Best backup software for linux
by Mark Schoonover 03 Nov '06

03 Nov '06

Matt Hyclak wrote: > On Tue, Oct 24, 2006 at 04:01:45PM +0100, Peter Crighton enlightened > us: >>> We are running backup softwares for incrementals/differentials and >>> full backups with variouse softwares currently using dirvish >>> scripts + amanda .. what is everyones views on other opensourced >>> backup software? is there anything better or other options we have >>> missed? We are looking at backula as an option? any thoughts? >> >> I am looking for the answer to the same question. I have got amanda >> going (but not used in anger - just doing my first Centos install for >> my home server). Just today got amanda to write and restore some >> data. >> >> So my requirements: >> >> * cheap/free >> * multiple backups per tape >> * fully automated backup each day >> * easy recovery (happy with either a Kdat type GUI or amanda type) - >> needs to know which tape to recover the latest (or chosen) version. >> * ideal for a home network (mixed Linux Windows) >> >> >> >> The only thing I don't like about amanda (so far) is that it needs a >> new tape each backup, mainly because I'd like it to be a completely >> automatic backup, only requiring the tape to be changed when full >> (or maybe each month). >> >> I typically don't backup much data each day (because it's a home >> network), so I'd like to be able to store multiple backups on each >> tape. I have 20GB Travan tape drive, so that's enough for a complete >> full backup and several incremental's. >> > > If you have enough holding disk, just leave the tape out until you > hit about 20GB worth of data. I do this here at work on a weekly > basis - holding disk is a pair of RAID 1 disks, then once a week I > pop a tape in and it flushes the entire week's worth of data. > > Matt If you have 20GB of data, using tapes is OK. In my case, I have about 3TB of data that needs to be backed up, and taken offsite. So, the only real option is rsync going out to disks. We started out with using one of the recipes from the Linux Server Hacks book, #38, #41 & #42 to essentially build up a poor man's SAN. Using CentOS installed on systems with 3Ware cards, I have 2 onsite 4 TB NAS. The first one is for network use, the second is for hourly, daily and weekly snapshots of the main NAS. There's a third 4TB NAS that's located offsite in a colo facility that's fed with dual T1s. We can have anywhere from 2-5 GB of data change every day. We're a company of about 50 employees, and we do legal work - so nothing can be thrown away. This system runs 7 days a week, and it's fully automated with email alerts, etc. The big benefit is restores. We've had our graphics dept accidently delete 250GB of data, and it was trivial to scp the missing data back to the main NAS. It all happened at network speeds, over a GB switch. All the NASes have dual NICS in them, and the second NICS are connected to their own private GB switch - hence the poor man's SAN. When hourly snapshots run, all the data that changes has a seperate GB network to move the data, leaving the office network alone. No user can tell that backups are happening throughout the day. Maybe this is something I should write up in more detail. The entire system runs on just a couple of shell scripts, rsync, and Perl program to mail out logs.... HTH Mark Mark

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Trouble syncing Palm via USB
by Marc D. Field 02 Nov '06

02 Nov '06

Hi, I'm having trouble getting my Palm to sync with jpilot on my Centos system via USB. When I sync, I get this error in jpilot: pi_accept Illegal seek Exiting with status SYNC_ERROR_PI_ACCEPT Finished I have jpilot syncing fine with this Palm over the network, BTW. For USB, I set things up for udev as described on various websites. Here are the relevant ports & symlink (created and deleted automatically with each sync attempt): lrwxrwxrwx 1 root root 7 Oct 17 09:09 /dev/pilot -> ttyUSB1 crw-rw---- 1 root uucp 188, 0 Oct 17 09:09 /dev/ttyUSB0 crw------- 1 marc uucp 188, 1 Oct 17 09:09 /dev/ttyUSB1 I added myself to the uucp group. It doesn't look like this is a permissions issue, does it? (I saw a message in the list's archives indicating that one must start jpilot as root in order to sync, but this doesn't make sense to me.) Any ideas as to what's going wrong? Are others syncing Palm devices to their Centos boxes via USB (and from normal user accounts)? I have tried other things, such as using a different USB port on the PC, and having jpilot sync to /dev/ttyUSB0 and /dev/ttyUSB1 instead of the /dev/pilot symlink. I've also searched the jpilot mailing list archives, and the web in general, and still no solution. I'm running an up to date Centos 4 system, pilot-link-0.11.8-8, and self-compiled jpilot 0.99.9. Thanks for any help! Marc

3 2

Centos and Network Attached Storage
by Alexandru Asofie 02 Nov '06

02 Nov '06

Hello, I need to setup a NAS server on Centos. The machine will be: Dual xeon/Dual Opteron 4GB memory 13x 320GB SATA + 1 hotspare 1x 320GB SATA for OS The server can do RAID5,6,or 10. Has anyone installed such a software and can you recommand a specific product? Thank you.

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Discuss October 2006