Discuss December 2006

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209 participants
192 discussions

Copying my system to another drive
by Christophe 24 Dec '06

24 Dec '06

Hi, I'm trying to copy my CentOS install to a new drive. - old drive is /dev/hda and had hda1 : /boot hda2 : swap hda3 lvm hda5 : lvm hda4 : /usr/local - new drive is /dev/hdb hdb1 : /boot hdb2 : swap hdb3 : / I decided to get rid of lvm which is useless to me. I've created and formated the new partitions and copied anything from the old drive to the new one excepted the /dev entries by issuing some cp -a With grub I did root (hd1,0) then setup (hd1) I've also modified the content of hdb1 /boot/grub/grub.conf and passed param root=/dev/hdb3 to the kernel I didn't find how to created all the /dev entries but I read somewhere that 2.6 kernels create them at boot time. So, what is the problem ? (I boot my server by selecting the new drive from the BIOS boot devices menu) : boot goes until 'checking root filesystem', then complains about something really wrong on /dev/hdb3 and send me to a kind of rescue shell. I did a fsck on /dev/hdb3 which says the volume is clean Don't know what I've missed and what I have to fix... just in case, cat /proc/mounts gives me rootfs / rootfs rw 0,0 /proc /proc proc rw,nodiratime 0 0 none /dev tmpfs rw 0 0 /proc /proc proc rw,nodirattime 0 0 /proc/bus/usb /proc/bus/usb usbfs rw 0 0 /sys /sys sysfs rw 0 0 none /dev/pts devpts rw 0 0 Thanks and merry Christmas to all ! ___________________________________________________________________________ Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses http://fr.answers.yahoo.com

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CentOS-announce Digest, Vol 22, Issue 3
by centos-announce-request＠centos.org 23 Dec '06

23 Dec '06

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-2006:0749 Moderate CentOS 4 ia64 tar - security update (Pasi Pirhonen) 2. CESA-2006:0749 Moderate CentOS 4 s390(x) tar - security update (Pasi Pirhonen) 3. CESA-2006:0749 Moderate CentOS 3 ia64 tar - security update (Pasi Pirhonen) 4. CESA-2006:0749 Moderate CentOS 3 s390(x) tar - security update (Pasi Pirhonen) 5. CESA-2006:0759 Critical CentOS 3 ia64 seamonkey - security update (Pasi Pirhonen) 6. CESA-2006:0759 Critical CentOS 3 s390(x) seamonkey - security update (Pasi Pirhonen) 7. CESA-2006:0749 Moderate CentOS 4 i386 tar - security update (Johnny Hughes) 8. CESA-2006:0749 Moderate CentOS 4 x86_64 tar - security update (Johnny Hughes) 9. CESA-2006:0759-01 Critical CentOS 3 s390(x) seamonkey - security update (Pasi Pirhonen) 10. CESA-2006:0759 Critical CentOS 4 x86_64 seamonkey - security update (Johnny Hughes) 11. CESA-2006:0759 Critical CentOS 4 i386 seamonkey - security update (Johnny Hughes) 12. CESA-2006:0758 Critical CentOS 4 x86_64 Firefox - security update (Johnny Hughes) 13. CESA-2006:0760 Critical CentOS 4 x86_64 Thunderbird - security update (Johnny Hughes) 14. CESA-2006:0758 Critical CentOS 4 i386 Firefox - security update (Johnny Hughes) 15. CESA-2006:0760 Critical CentOS 4 i386 Thunderbird - security update (Johnny Hughes) 16. CESA-2006:0759 Critical CentOS 4 ia64 seamonkey - security update (Pasi Pirhonen) 17. CESA-2006:0758 Critical CentOS 4 ia64 firefox - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Fri, 22 Dec 2006 23:47:12 +0200 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2006:0749 Moderate CentOS 4 ia64 tar - security update To: centos-announce(a)centos.org Message-ID: <20061222214711.GF12634(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2006:0749 https://rhn.redhat.com/errata/RHSA-2006-0749.html The following updated files have been uploaded and are currently syncing to the mirrors: files: updates/ia64/RPMS/tar-1.14-12.RHEL4.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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recommneded tape drives
by Dustin Krysak 23 Dec '06

23 Dec '06

Hi there, I am pricing out a dell 840 (low end file server) that will run latest centos. Can anyone recommend a good tape drive/card combo with centos? The drives (to be backed up) in it will be a raid 0 - 500gb. Thanks in advance! Dustin

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How to connect to a Windows PC in LAN
by Ha Thai Duong 22 Dec '06

22 Dec '06

Hi I am a new bee to Linux in general. Please accept my apologies if the question is not appropriate. I have a LAN with 2 computers: One is CentOS and one is Windows XP. I am trying to transfer file between 2 computers using LAN. Can you please tell me how to do it? I have tried Samba from the Applications menu. Add a directory in there. Set it to Read only and Allow access to everyone. I couldn't see the CentOS from Windows computer. I have tried the Network Servers. There is Windows Network there. When i click to see inside that, there is nothing. I tried to see the all the services are running. The winbind status is winbindd dead but subsys locked. Thanks a lot for your help. I do appreciate that.

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Slightly OT: DNS -force client always use authoritative
by Karl R. Balsmeier 22 Dec '06

22 Dec '06

Is there a specific way to set a name server so that clients are always *forced* to use an autoritative name server? UltraDNS and some others have mentioned little features they have, but it only hints at the possibility that somewhere in the DNS spec. -karlski

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Upgrading Server Motherboard
by Matt 22 Dec '06

22 Dec '06

I have a server running CentOS 4.2 that works as a web/email with very heavy load. It runs Directadmin web gui which is like Cpanel. It runs on a cheapy mATX motherboard(ECS 741GX-M) with socket A 2800+ CPU and 2Gbyte DDR. The OS and data are on a 300Gbyte PATA maxtor drive and data backups are run weekly to another PATA drive. The server is overwelmed and data backups take over 5 hours to complete. I have a Tyan(K8E) server board now that is socket 939 with SATA support. Maxtor makes a utillity that will copy there drives so I bought a second identical PATA drive and plan on copying it so if I screw something up it will be a backup copy and not the critical original. >My first question is can I simply plug this drive into the new faster motherboard and have it just boot up and run? >Next, should I get a dual core CPU or just a fast single core? Most of the load on this server is due to Spamassassin dealing with about 2000 email accounts. Although it also serves up websites that is pretty minor load I beleive since they do not get all that many hits. >I was told up2date will update this server too 4.4. Problem is that the Directadmin GUI is a bit touchy. Any modifications to the services its married to could be bad. I really need to talk to there tech support on this. >My new server motherboard is socket 939 and supports DDR 400. It was a bargin off ebay but appears to work fine. Would I be better off getting a socket AM2 that supports DDR2 or will that make much difference in performance? The 939 motherboard supports a max of 4Gbyte DDR too. >I also purchased a Seagate SATA 500Gbyte drive. The 300G PATA drive is just under half full. I imagine mostly email. Mailboxes for the most part have 50M cap but there alot of them and still adding more. Is there anyway to copy the OS installed on the PATA to a larger and faster SATA drive? I am doubting this since the drives place/mnt in /dev will change. I know the best solution is to install CentOS 4.4 on new box, install Directadmin, and then backup and restore to new server but that will result in substantial downtime that I am trying to get out off. Plus a lot of work. The Directadmin install has been heavilly customized and I will need to remember what I all did to it. Actually I may still do that but I would like to move to a faster motherboard first so just maybe the backups run faster. Thanks for any help or advice. Matthew

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Centos 4.0 (Final) and Dell 1950 with SAS controller
by Glenn MacGregor 22 Dec '06

22 Dec '06

Hi All, I have an "appliance" cd which uses CentOS 4.0 (Final) which I am trying to load on a new Dell 1950 server with a SAS driver controller. During the install it fails to find any disks to load to. I got the drivers from Dell and dd the correct one to a floppy, boot from the appliance cd and enter linux dd at the prompt. I load the driver in the install and it still fails to find any disks. I have looked at the virtual consoles after the module disk and I see some strange information: failed to open /tmp/drivers/modules.pcimap: no such file or directory failed to open /tmp/drviers/pci.ids: no such file or directory ..... modules to insert mptbase mptscsih mptsas module(s) mptbase mptscsih mptsas not found So the driver disk is loading but....it can't find the modules. So I went on looking at the driver disk and found: -rw-r--r-- 1 root root 48 Dec 20 2005 disk-info drwx------ 2 root root 12288 Dec 20 2005 lost+found -rw-r--r-- 1 root root 330 Dec 20 2005 modinfo -rw-r--r-- 1 root root 817645 Dec 20 2005 modules.cgz -rw-r--r-- 1 root root 116 Dec 20 2005 modules.dep -rw-r--r-- 1 root root 52852 Dec 20 2005 packages.py -rw-r--r-- 1 root root 993 Dec 20 2005 pcitable -rw-r--r-- 1 root root 32 Dec 20 2005 rhdd So I figured out that modules.cgz is zip and cpio'd, I undid it and this is what is in that archive: drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-11.EL drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-11.ELhugemem drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-11.ELsmp drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-22.EL drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-22.ELhugemem drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-22.ELsmp drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-5.EL drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-5.ELhugemem drwxr-xr-x 3 root root 4096 Dec 21 14:22 2.6.9-5.ELsmp -rwxr-xr-x 1 root root 3850 Dec 20 2005 fusion.mptctl This seemed strange to me because CentOS 4.0 uses kernel 2.6.9-5.0.3.EL. So my question is could that be why the modules can not be found? If so what changes do I need to make to this driver disk to get working on CentOS 4.0? The controller is LSISAS1068 Sorry for the long post and thanks for the help. Glenn -- Glenn MacGregor HighStreet Networks

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Printer job control
by Ted Miller 22 Dec '06

22 Dec '06

What do I have to change to allow ANY user to control ANY print job? Having this locked on a workstation with a local printer attached just makes me want to take Centos and throw it across the room, especially when I can't even stop my own print jobs when something goes wrong. This has already cost me considerable money in wasted ink. This should be a check-box somewhere, or else a simple .rpm to download and run that would take care of this. Ted Miller Indiana

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Understanding cpuspeed/cpufreq
by James Pearson 22 Dec '06

22 Dec '06

[I sent this to the RHEL4 list - but maybe someone on this list knows more] I have a number of dual CPU and dual CPU/dual core Opteron systems that are used as compute servers. In an effort to reduce power consumption and reduce heat output, I would like to make use of the PowerNow! capabilities to clock back the CPUs when the machines are idle. These machines are running a 2.6.9-42 RHEL4 kernel However, in my tests so far in using the cpuspeed daemon or setting the kernel cpufeq governor to 'ondemand', the CPU will clock back their frequencies in situations where one or more CPUs are being heavily used i.e not what I want. Having a look through the cpuspeed daemon src (there is no man page), it forks a separate process to monitor each CPU - however, AFAIK it is not possible to runs these CPUs at different speeds - so it appears that when one of the daemons decides it should clock back 'its' CPU, all the CPUs are clocked back ... regardless of the fact that one or more of the other CPUs may be busy. Something similar seems to be happening using the various cpufreq governors - configuration is available for all CPUs separately (under /sys/devices/system/cpu/cpuN/cpufreq). i.e. it appears you can configure settings for each CPU independently, but in reality all CPUs must run at the same speed. Essentially what I want to achieve is something like: if _any_ CPU is 'busy' (usage over some threshold over some sampling period), then run at full speed and if _all_ CPUs are 'idle' (all below some threshold over some sampling period) then clock back the CPUs. Is there something/some setting(s) that can do this? Thanks James Pearson

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chkrootkit reporting possible LKM trojan
by Leonardo Vilela Pinheiro 22 Dec '06

22 Dec '06

How can I be sure if it is LKM or not? Today I've run chkrootkit and it gave me: Checking `lkm'... You have 179 process hidden for readdir command You have 179 process hidden for ps command chkproc: Warning: Possible LKM Trojan installed Checking `chkutmp'... The tty of the following user process(es) were not found in /var/run/utmp ! ! RUID PID TTY CMD ! root 3206 tty1 /sbin/mingetty tty1 ! root 3285 tty2 /sbin/mingetty tty2 ! root 3337 tty3 /sbin/mingetty tty3 ! root 3388 tty4 /sbin/mingetty tty4 ! root 3439 tty5 /sbin/mingetty tty5 Those hidden tty can be "su -" sessions that I have just started. The computer has just been restarted, and I have just opened those su sessions. There are also some "hidden files", all of them named .packlist and .exists. Everything else is fine. rkhunter looks fine. " rpm -Va kernel* " looks fine. Remote users access are being controlled through /etc/ssh/sshd_config in a user-host fashion. Thanks in advance. -- Vilela

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Discuss December 2006