Discuss

discuss@lists.centos.org

5 participants
34752 discussions

CentOS 4 and multi TB storage solutions
by Avtar Gill 09 Apr '06

09 Apr '06

Hi, I am currently searching for storage solutions to use in an environment with two CentOS servers. Both are web/MySQL servers hosting several web applications that forward HTTP requests for files to storage servers (all with 3ware cards offering RAID5 arrays) that collectively serve 10TB of images. The data grows by 2TB every year. This has been working so far but this current implementation is facing growing pains so I'm looking at more scalable options. Something that will offer 12TB of storage and room to grow by adding more storage as needed. Currently the Apple Xserve RAID 7TB offerings connected to a QLogic SANbox 5200 fibre switch looks very appealing. Especially considering the Xserve RAIDs are listed in Red Hat's RHEL HCL and Google searches have revealed successful RHEL & Xserve implementations . But since this is still preliminary research having more options for comparison would be nice. Has anyone here had previous experience with the following two products (with CentOS servers of course): http://www.storcase.com/infostation/16bay3u_scsi.asp http://www.aberdeeninc.com/ABCATG/KITX525.htm Any opinions about these vendors and/or products would be greatly appreciated. Also feel free to suggest similar products. Thanks, Avtar Gill

1 0

RE: [CentOS] redirecting some addresses with sendmail
by Mike Kercher 09 Apr '06

09 Apr '06

centos-bounces(a)centos.org <> scribbled on Sunday, April 09, 2006 3:14 PM: > I have a fully working cyrus+sendmail mail server hosting all > users for foo.com. Company foo has been acquired by company > bar and it has been decided that bar.com is the new domain of > choice. The administrator of bar.com has added a pile of > redirects to send various user(a)bar.com addresses so they come > up to my server at foo.com. My users have changed their From: > addresses to user(a)bar.com and we have a basic working system. > > However, if one user in former company foo mails another user > in the same office their mail now goes offsite to bar.com's > mail server and is then redirected back in again, which works > but is bad for bandwidth. > > Ideally I'd like to teach sendmail that a subset of bar.com > users are now local. However if I try this in the > /etc/aliases file, I get the warning "cannot alias non-local names". > > Has anyone got any better ideas how to do this- or a better > suggestion as to where I should ask this question again? Did you try the virtusertable instead of aliases yet? Mike

1 0

RE: [CentOS] Several problems upgrading CentOS 4.1 to 4.3
by Mike Kercher 09 Apr '06

09 Apr '06

centos-bounces(a)centos.org <> scribbled on Sunday, April 09, 2006 12:43 AM: > I had a CentOS 4.1 installation (LVM over RAID1), and tried > to do an update to the 4.3 release. > Nothing too fancy, I did all the partitions with the > graphical installer for the > 4.1 Version. %<-----snip > > I'm not a newbie, I have quite a while working with linux, > and I just want to aware people who are going to perform an > update, skipping some version in between or perhaps moving to > 4.3 to be very carefull in the process. > I think this was a experience that was worth telling and > researching to find out what really happend. > Why did you not just 'yum upgrade' to go from 4.1 to 4.3? Mike

4 5

Warm reboot failure
by Tarun Reddy 09 Apr '06

09 Apr '06

I recently bought a new Compaq Presario sr1710nx with 64-bit Sempron and last week installed Centos 4.3 64-bit on it. Worked like a champ until I attempted a reboot (using "init 6") and the computer hung after finishing the shutdown. Rebooting from cold worked, but without a warm reboot I was hesitant to use Centos. Since FC5 (64-bit as well) came out recently, I tried it and warm reboots work great. So it would seem that it is a kernel/driver issue, but I have no idea where to begin. Also I'm not if additional grub boot parameters might help. I won't be in front of the machine until this weekend, but since everyone else will be gone by them, I'd thought I'd ask you guys if you had any ideas. I really would like to get back the package stability of Centos. Fedora 5's updates are driving me nuts (too many, too often and too major). Any suggestions? (I'm going to try 32-bit Centos this weekend first) Thanks ahead of time, Tarun

1 1

DUP! on ping reply
by Matt Arnilo S. Baluyos (Mailing Lists) 09 Apr '06

09 Apr '06

Hello List, I'm running a ping command to monitor our connection to the Internet. Around yesterday, I was getting a lot of (DUP!) text on the replies. Would anyone know what that means? -- Stand before it and there is no beginning. Follow it and there is no end. Stay with the ancient Tao, Move with the present.

3 2

Several problems upgrading CentOS 4.1 to 4.3
by Ale Feltes Quenhan 09 Apr '06

09 Apr '06

I had a CentOS 4.1 installation (LVM over RAID1), and tried to do an update to the 4.3 release. Nothing too fancy, I did all the partitions with the graphical installer for the 4.1 Version. First, the installer did not find the previos installation, then I tried with the "upgradeany" option to the kernel, and from there the update ran apparently with no problem. When the boot loader section came, the setup was not able to find the previous working grub configuration, and the "update boot loader" option was disabled, so I marked the "new boot loader configuration" (don't remember the exact string. Then the installation process ended, and I did reboot. The "classic" "Error 15: File not found", from grub came. The description line was indeed, for the 2.6.9-34 (centos 4.3's relase), but I could not boot the system. I went into the "linux rescue" and from there, I started to find out some more weird stuff. First, the kernel package was not installed correctly, the files. /boot/* and /lib/modules/* weren't there, there was no entry on the rpm database, in fact the only probe that the kernel was "installed" was the grub entry. I tried to rebuild my old grub configuration, and boot with the previous kernel version I had. (The rescue disk, did not let me mount the cdrom, and I was without Internet to find out how to enable de /dev entry to acomplish the task). With the old kernel config, I could start my server, but I could not login from the console (tty*). Then I had to reboot in single mode, and from there perform the kernel installation from the 4.3's cdrom. /var/log/messages had this line for every login attempt: login [1234]: Module unknown. As this is a production server, I checked for all the services (ldap, samba, mysql, apache, etc.) and there where all working fine. I could log in from sshd without any problem (besides the bunch I'm writing here of course). Finally, when I checked on all the services and the console login problem, the rest was working as before. I went then to the "yum check-update", and found some "pam-*" update, so I did the corresponding "yum update". After pam's update, I could login again from the console, by the way "crond" tasks weren't working either, when console login was not working. That is not the end of this Crypt's Tale :( Now I have the system, running 4.3, yum does not report any update, but I have several duplicated rpm installed. :( I'm willing to try all this again, in a VMware, just to convince myself that I'm not crazy, and that ghosts does not exist :) upgrade.log has several lines like this: Upgrading kernel-2.6.9-34.EL.i686. error: %pre(kernel-2.6.9-34.EL.i686) scriptlet failed, exit status 255 error: install: %pre scriptlet failed (2), skipping kernel-2.6.9-34.EL Upgrading kernel-smp-2.6.9-34.EL.i686. error: %pre(kernel-smp-2.6.9-34.EL.i686) scriptlet failed, exit status 255 error: install: %pre scriptlet failed (2), skipping kernel-smp-2.6.9-34.EL where the pre-install script fail, but how come the installer did not reported any problem during installation? I'm not a newbie, I have quite a while working with linux, and I just want to aware people who are going to perform an update, skipping some version in between or perhaps moving to 4.3 to be very carefull in the process. I think this was a experience that was worth telling and researching to find out what really happend. Best Regards Ale

1 0

Some quick mrtg help
by Joe Klemmer 09 Apr '06

09 Apr '06

Ok, I'm having a major brain hemorrhage or something. I just can't get mrtg setup on my box. I've done it before and it's not like it's brain surgery but there's a mental block or something that I just can't get around. All I want to do is have a nice, simple graph of the traffic on the box and the gateway in the standard day/week/month/year thing. I've got the mrtg rpm installed and it's all there. Could someone just give me a quick kickstart on this? Just something to dislodge the blockage. I'd be forever in your debt. Thank you, Joe

4 4

Webcam software
by Thomas E Dukes 08 Apr '06

08 Apr '06

Hello, I have a wireless webcam, Linksys WVC11B, that has its own internal network ip address. Is there any CentOS/Linux software that will allow me to capture the image and view it from the outside? TIA

1 0

Updated Yum Docs
by Mike Stankovic 08 Apr '06

08 Apr '06

The docs in http://mirror.centos.org/centos/4/docs/ do not reflect yum of today ie the yum plugins. Where can updated yum docs be found? By browsing lists such as fedora-devel, centos one can see how the plugins have "stumbled in" but newbies/anyone wanting to pickup on the new features has nothing to read. Note there are yumex docs at the above location but my query relates to yum $ grep yum /var/log/rpmpkgs centos-yumconf-4-4.5.noarch.rpm yum-2.4.2-2.centos4.noarch.rpm yum-plugin-fastestmirror-0.2.4-3.c4.noarch.rpm yum-plugin-protectbase-1.1-1.c4.noarch.rpm yum-utils-0.5-1.c4.noarch.rpm yumex-0.99.11-1.0.c4.noarch.rpm ----------------------------------------------- Improve the mailing list by performing a simple search before posting and reading the faq/etiquette. Thank you!! __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

6 8

SELINUX?
by Chris Peikert 08 Apr '06

08 Apr '06

While downloading almost all the guilds I came across a SELINUX Guide. Whats that for?

8 9

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