Discuss February 2011

discuss@lists.centos.org

267 participants
208 discussions

mount the wrong device after system recovery
by Xinhuan Zheng 09 Feb '11

09 Feb '11

Hi, I am recovering a CentOS 5.4 system. I've copied all partitions into the recovery system. I've installed grub boot loader. However, the original system is using /dev/sdb1 for root (/), while the recovery system is using LVM (/dev/vg0/lv1) for root (/). When recovery system boots, I got the panic error: * Mounting /dev/sdb1 on /sysroot * Mount: mounting /dev/sdb1 on /sysroot failed: No such file or directory * Mount: mounting /dev on /sysroot/dev failed: No such file or directory * * switching / to /sysroot * Switch_root: bad newroot /sysroot * Kernel panic - not syncing: Attempted to kill init! I've changed the recovery system fstab to use the correct devices. I deleted recovery system etc/lvm/cache/.cache file. But it still doesn't work. What am I missing? Thanks, - xinhuan

5 8

iptables nat table rules
by Carlos S 09 Feb '11

09 Feb '11

I am forwarding traffic on port 8080 to port 80 with following rule. # iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 8080 -j REDIRECT --to-port 80 # iptables-save However, I am unable to add it directly in /etc/sysconfig/iptables. I think it is used only for filter table and not nat table. So where do nat table rules go? Any help? - cs.

4 5

iSCSI disk preperation
by Jason Brown 09 Feb '11

09 Feb '11

I am currently going through the process of installing/configuring an iSCSI target and cannot find a good write up on how to prepare the disks on the server. I would like to mirror the two disks and present them to the client. Mirroring isn't the question, its how I go about it is the problem. When I partitioned the two drives and mirrored them together, then presented them to the client, it showed to the client as a disk out no partion on it. Should I partition the drive again and then lay the file system down on top of that? Or should I delete the partitions on the target server and just have sda and sdb mirrored, then when the client attaches the disk, then partion it (/dev/sdc1) and write the file system. Thanks

7 18

rsync permission denied , without changing apache user and group setting
by Agnello George 09 Feb '11

09 Feb '11

Hi i got two server webserver1 and webserver2 i want to rsync some data form webserver1 to webserver2 using a user called syncuser ( syncuser is added to the group apache : adduser -G apache syncuser ) here is my command : [root@web1 projects]# rsync -avzh /var/www/projects/beta-website1 syncuser@web2server:/var/www/projects syncuser@web2server password: building file list ... done beta-website1 rsync: failed to set times on "/var/www/projects/beta-website1": Operation not permitted (1) beta-website1/index.html rsync: mkstemp "/var/www/projects/beta-website1/.index.html.ZW9de8" failed: Permission denied (13) rsync: failed to set times on "/var/www/projects/beta-website1": Operation not permitted (1) sent 219 bytes received 54 bytes 60.67 bytes/sec total size is 57 speedup is 0.21 rsync error: some files could not be transferred (code 23) at main.c(892) [sender=2.6.8] on webserver2 my permission are as follows ( i dont not want to change the permissions, i want user and group to be apache ) [root@web6 projects]# ll total 20 drwxr-xr-x 2 apache apache 4096 Feb 7 15:54 beta-website1 Can some one help me understand how to sync thses files . -- Regards Agnello D'souza

2 1

Printer-Problems
by Timothy Kesten 09 Feb '11

09 Feb '11

Hi Folks, fresh CentOS 5.5 x86_64. One USB-printer connected (HP Business Inkjet 1200) Printing from localhost:631 (Testpage) works. But no from any application. From OO only the message: printer-problem - no more. Second printer is from far (Cupsd) in the network. Works well. But what's about the local printer? Any hints? Thx Timothy

2 8

Re: [CentOS] Fan speed control on Supermicro X8DAL board with CentOS
by Chuck Munro 09 Feb '11

09 Feb '11

On 02/07/11 20:42, RedShift wrote: > > Actually it's possible a hardware monitoring module is interfering with the FAN speed control duties. Try preventing any hardware monitoring related modules get modprobed. See modprobe.conf how to blacklist modules. > > > Glenn Interesting thought Glenn, thanks. I've since gone back to CentOS-5.5 on the box (since it's not fully built anyway) and added the SuperoDoctor monitoring utility after resolving a couple of dependencies like SNMP and the correct kernel driver. I sent an enquiry to the Supermicro support folks, and they jumped on it right away, which impressed me. They wanted a screenshot of SuperoDoctor to try to analyze the problem. I don't think it's a case of a kernel module getting in the way because this issue crops up even during the BIOS boot process, and happens randomly if I run memtest86 as well. Sometimes the fans jump to light speed, other times not. I'm beginning to think it's either a bug in the latest BIOS or a sensor chip problem. Even when the CPU temperatures are reported as "Low", the fans run full speed most of the time. The exhaust air leaving the box is almost cool, so ambient temperature is ok. I'll give the Supermicro support folks some time to sort this out, since I'm still waiting for CentOS-6 anyway. Chuck

1 0

Ken Olsen od DEC, 1927-2011
by m.roth＠5-cent.us 09 Feb '11

09 Feb '11

A lot of us wouldn't be here without him. DEC made good, really reliable hardware. mark <http://www.networkworld.com/news/2011/020711-kenneth-olsen-dec-obit.html>

9 10

yum is b0rked
by Tim Dunphy 09 Feb '11

09 Feb '11

hello centos.. my yum is b0rked... [root@VIRTCENT03:~] #yum repolist Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 309, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 178, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 349, in doCommands return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds) File "/usr/share/yum-cli/yumcommands.py", line 781, in doCommand base.repos.populateSack() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 232, in populateSack self.doSetup() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 79, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 179, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 164, in postreposetup_hook read_timedhosts() File "/usr/lib/yum-plugins/fastestmirror.py", line 233, in read_timedhosts host, time = line.split() ValueError: too many values to unpack rm -rf /var/lib/rpm/*_db.* I have tried rm -rf rm -rf /var/lib/rpm/*_db.* and rebuilt my rpm package database but that didn't move the needle on this problem And here is the contents of timedhosts.txt [root@VIRTCENT03:~] #cat /var/cache/yum/timedhosts.txt <?xml version="1.0" encoding="UTF-8"?> <repomd xmlns="http://linux.duke.edu/metadata/repo"> <data type="other_db"> <location href="repodata/other.sqlite.bz2"/> <checksum type="sha">952fa417bd3a2d464ac1e4b0a324019a9e0d6827</checksum> <timestamp>1297028257</timestamp> <open-checksum type="sha">dac0d202c11a546909943ed2f8722f29b3183a31</open-che cksum> <database_version>10</database_version> </data> <data type="other"> <location href="repodata/other.xml.gz"/> <checksum type="sha">5993a19c31dbd33c125efe3a1355eee2bf6456ab</checksum> <timestamp>1297028256</timestamp> <open-checksum type="sha">0c9f4d594d743233b2b955102b254d0a960a3824</open-che cksum> </data> <data type="filelists_db"> <location href="repodata/filelists.sqlite.bz2"/> <checksum type="sha">5c9ff9f0ffa1b528040054940366e1a1f2e7f330</checksum> <timestamp>1297028257</timestamp> <open-checksum type="sha">427720aeb56f0b481accf6679925784214cb941a</open-che cksum> <database_version>10</database_version> </data> <data type="filelists"> <location href="repodata/filelists.xml.gz"/> <checksum type="sha">588ab33cce8e860a122d65a41732e0ec64211b0e</checksum> <timestamp>1297028256</timestamp> <open-checksum type="sha">9900ba15e9ee404a39f5c79667f9218d58785762</open-che cksum> </data> <data type="primary_db"> <location href="repodata/primary.sqlite.bz2"/> <checksum type="sha">28cf50779cf9980daf65c30c701c15bc273fa718</checksum> <timestamp>1297028258</timestamp> <open-checksum type="sha">4d8ffe4996007cba9524f4921a070961c6b9f6dd</open-checksum> <database_version>10</database_version> </data> <data type="primary"> <location href="repodata/primary.xml.gz"/> <checksum type="sha">3cfa26f5045b5f686a9c435af8f4ce76ed5c2721</checksum> <timestamp>1297028256</timestamp> <open-checksum type="sha">c5dc522811bdcccf1262a676114f6c874ab8b2ad</open-checksum> </data> <data type="group"> <location href="repodata/yumgroups.xml"/> <checksum type="sha">94bb5d121e662e57176131dfabd9db1e1b8335fa</checksum> <timestamp>1296125151</timestamp> </data> </repomd> thanks in advance!! -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

2 1

Configuring a cluster
by Johnny H 08 Feb '11

08 Feb '11

Dear Centos users, I am not sure if this the correct place to post but it seems sensible. I have an 8 node cluster which I want to install/configure Centos. As I am not a sys-admin, can anyone advise me on what I should do? Any suggestions appreciated. Thank you.

10 13

SSH AllowUser WildCard
by Stephen Cox 08 Feb '11

08 Feb '11

Is it possible to allow a user to login from an changing hostname like: username(a)*hoststringfixed.com -- Stephen Cox

5 12

← Newer
1
...
12
13
14
15
16
17
18
...
21
Older →

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss February 2011