Discuss January 2011

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276 participants
289 discussions

LiveCD System recovery - Mounting LVM?
by Johan Martinez 05 Feb '11

05 Feb '11

Hi, I am trying to recover data from my old system which had LVM. The disk had two partitions - /dev/sda1 (boot, Linux) and /dev/sda2 (Linux LVM). I had taken a backup of both partitions using dd. Now I am booting of CentOS live cd for system restore. I recreated partitions like previous system using fdisk and then used dd to dump all the data onto it. I would like to mount sda2 as LVM, but I don't know how to do that. Any steps or howto mount LVM manually would be really helpful. I think I can recover the system once I am able to access sda1 and sda2. Any help? jM.

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Does anybody know a PeerGuardian like app?
by S Mathias 04 Feb '11

04 Feb '11

Are there any programs blocking ip, and has frequently updated lists, like the peerguardian on windows? sorry for the question, but i looking for this kind of application :O Thank you, and a happy christmas!

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Re: [CentOS] how to move forward/undo/revert/fix re: a failed CentOS 5.5 to SL 5.5 migration ... [SOLVED?]
by Larry Vaden 02 Feb '11

02 Feb '11

On Wed, Jan 26, 2011 at 11:25 AM, Larry Vaden <vaden(a)texoma.net> wrote: > For various reasons which seemingly fail the necessary/sufficient > tests with the benefit of hindsight, I attempted to migrate a shell > machine which is the beach front from which I work (not a production > server) from CentOS 5.5 to Scientific Linux 5.5 yesterday. > > Karanbir is quoted on this list as having said something like: > > "All that you should need to do is install centos-release, remove > redhat-release rpms and just yum update the machine, which should > bring in all packages changed by CentOS ( since they will have a > slightly higher E-V-R )." > > In other words, is there a get out of jail card based on Karanbir's > stanza which will return the machine to a consistent state without a > fresh install? With apologies for replying to my own post, the final solution (possibly regarded as draconian and puerile by others) which seemed to work to return to a consistent state was to download Oracle R5U6 and invoke 'rpm -ivh' following some rpm which must be set aside in order to avoid "can not coexist." (e.g., bind vs. bind97 et al). My thoughts are that it would work as well once CentOS and Scientific Linux R5U6 are released. It was necessary to pay special attention to the output of updatedb; locate .rpm | egrep ".rpmnew$|.rpmorig$|.rpmsave$" No data was lost, but I watch some Dennis Miller, and like him at the end of a rant, "I could be wrong about that" :) kind regards/ldv

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what pkg contains libstdc++-libc6.2-2.so.3
by Fong Vang 02 Feb '11

02 Feb '11

In CentOS 4.1/2, what package contains this library: libstdc++-libc6.2-2.so.3? I installed a couple of the compat- packages, but this library is still missing.

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Squid and SELinux
by Marcos Lois Bermúdez 02 Feb '11

02 Feb '11

Hi. I'm trying to setup squid with SELinux, the problem i encounter is taht i want to add another directory for cache, in this system we have a home partition with huge space, i create a squid dir and add the path with semanage: semanage fcontext -a -t squid_cache_t '/home/squid(/.*)?' i check the files and are in the good context: drwxr-xr-x squid squid user_u:object_r:squid_cache_t . drwxr-xr-x squid squid system_u:object_r:home_root_t .. drwxr-x--- squid squid user_u:object_r:squid_cache_t 00 drwxr-x--- squid squid user_u:object_r:squid_cache_t 01 ... But when i want start it i get this: type=AVC msg=audit(1296442326.932:739661): avc: denied { search } for pid=30924 comm="squid" name="/" dev=sda3 ino=2 scontext=user_u:system_r:squid_t:s0 tcontext=system_u:object_r:home_root_t:s0 tclass=dir I know that the solution is to mount the huge partition on /var/spool/squid, i'm a newbie to SELinux, and want to know if it's posible to archive this. Regards.

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How to relocate $HOME directory
by Soo-Hyun Choi 01 Feb '11

01 Feb '11

Hi there, As you know, $HOME is generally located at "/home/$username" by default. I would like to re-locate all users' $HOME directories to something like "/export/home/$username" without having a hassle/trouble. Initially, I've thought of just copying them to the new directory (under /export/home/xxx), but guessed it might trouble for the normal use (I'm pretty new to CentOS, although many experiences with Debian/Ubuntu). Is there any good tricks (or caveats) when moving users' home directory cleanly with CentOS? (I'm with CentOS 5.5 x86_64) Cheers, Soo-Hyun

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sshd problem
by Yang Yang 01 Feb '11

01 Feb '11

my server is on centos 5.5,it is just a new reinstall system i build a php depend on server and used nginx,php,mysql ssh is default 22 port The system perfomance good a few time.but it is always happen a problem only need hardware reboot to solve.the server is on idc.so i can not see the local screen information. the appearance is: 1.it can not use ssh to connect,it show server is down or rebooting 2.ping is ok 3.http can show nginx's information(nginx/0.8.46),but can not load right page,and it show 403 forbiden page i use another server use ssh -vv xxx.xxx.xxx.xxx,and the responce is: SSH2_MSG_KEXINIT sent close sshd hangs after SSH2_MSG_KEXINIT sent i do not know what happen,please give me a good answer thanks erverbody

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OT: Recommendations for a virtual storage server
by carlopmart 01 Feb '11

01 Feb '11

Hi all, I need to install a virtual machine acting as a virtual storage server under CentOS 5.x (using kvm, xen, virtualbox or vmware). This virtual storage machine needs to server storage to another ESXi server and at the same time to the host where is installed. This is due to the limitations of hardware I have available. Both hosts needs to server several machines. It is very important that the virtual machine consumes the least resources possible (host has 5GB RAM and i need to run three virtual machines minimum, including this storage server as a virtual machine). What can be better solution: CentOS, NexentaStor, openfiler ...?? Many thaks. -- CL Martinez carlopmart {at} gmail {d0t} com

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Groups
by Jason S-M 01 Feb '11

01 Feb '11

Hi All, On one of my servers I have a personal account and root. I disable root for ssh logins and run ssh on an alternative port. When 'scp'ing files I usually scp them up, then ssh in 'su' root and move them to /var/www/html. I can sftp I realize, but what group can I add my personal account to, but not root, so I can sftp in and put the files in /var/www/html? Secondarily /var/www/html/<my website> is owned by root:root, can I change this to something else so my sftp'ing is easier? apache:apache as owner? -Jason

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Re: [CentOS] RAID support in kernel?
by Les Bell 31 Jan '11

31 Jan '11

Kenni Lund <kenni(a)kelu.dk> wrote: >> Fakeraid is a proprietary software RAID solution, so if your motherboard suddently decides to die, how will you then get access to your data? << Obviously, you restore it from a backup. RAID is not a substitute for backups. Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144

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Discuss January 2011