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how to use my rpm to replace default old version rpm in centos?
by ma qiang 07 Jul '10

07 Jul '10

Hi all, I have installed a software using "yum install ...", but the version of rpm in centos is too old. I have made a new rpm from source, and now I'd like to use this to replace the old version rpm in centos cd. So, When I install centos for my computer, I can choose to install it automaticly. In my guess, I have to replace the rpm at first. After that, I need to edit something such as dependencies. Who can tell me how? Thanks a lot. Best Wishes! Qiang Ma

3 3

disable dvd write
by grace rante 07 Jul '10

07 Jul '10

hi, does anybody know how to disable dvd/cd write access in centos 5.3? thanks

3 2

Ext4 safe for production use?
by Emmanuel Noobadmin 07 Jul '10

07 Jul '10

As part of my current research for upcoming setup, I started reading up on filesystems (was actually looking up fencing which leds to node crash and file integrity on different fs) to see if there would be any significant improvement to using a different filesystem for networked storage. e.g. glusterfs on top of ext4 nodes. Initially, the reading suggested that ext4 would provide a significant performance boost. Quite possibly since it delays write longer, latencies of the network storage is hidden even better especially for temporary files. After subsequent reading, it seems that the cost of the massive delay allocation that could blow up really bad in the event the system crash. However, this may also be limited to poorly written applications, i.e. since some massive arguments last year over Firefox 3.0, sqlite and ext4 problems, ext4 now detects situations where it should flush to disk immediately to avoid zero length files on crash. Assuming I'm using the most likely disk writing applications I'm using is KVM, exim, dovecot, mysql and postgresql, would ext4 be safe for production use or should I stick to ext3?

1 0

DNS or firewall problem
by Thomas Dukes 07 Jul '10

07 Jul '10

Been working this for over a month now and I'm stumped. Everything was working until the 'crash'. Backup was no good so I did a fresh install of centos 5.5. Trying to get things back like they were but its been a really long time since I had to set things up from scratch, Redhat 2.0. My centos server acts as a gateway/firewall/router for my home network. Internal machines can access the internet. The server can access the internet. I can access my server/services from outside the local network but internal machines cannot. Any ideas/suggestions? Thanks, --Eddie

8 22

test
by mattias jonsson 07 Jul '10

07 Jul '10

2 2

Problem with Gnome (or nautilus)
by Basil Kurian 06 Jul '10

06 Jul '10

I have upgraded form 5.4 to 5.5 . after that i 'm having problem with nautilus .... some strange errors like "not on the same file system" occurs during file operation like moving deleting etc..... after that i did a fresh installation of 5.5 . then aslo same problem .. does anyone experienced such a problem ?? Now i'm using 5.3 . Also the Bind DNS server in 5.4 and 5.5 seems to be buggy . I don't have any problem with BIND on 5.3

2 4

why i can not put my swap files in /dev?
by Tang Jianwei 06 Jul '10

06 Jul '10

I tried to create some swap files in /dev directory for my desktop. the dd and mkswap were ok. but when I try to swapon it, i get this: # swapon /dev/myswap swapon: /dev/myswap: Invalid argument but when I mv the file to some other directory like /mnt or /, the swapon works. could sb. tell me why? -- Tang Jianwei

7 11

CentOS Cluster
by Torintino T 06 Jul '10

06 Jul '10

Dear All, I am newbie to Linux Clustering, i have 2 standalone CentOS servers, i want to setup a cluster on those servers, to synchronize between each other, and to make a one as standby to the other, if a one fails the other will switchover. I will mostly use Apache, Mysql, and PHP. I have read the "Cluster Administration" document, i found that there are multiple methods to setup the cluster, actually i want to ask expert people in the clustering, which method is the most proper one, and should i have use a fence device, which one i will preferably use. Thanks for assistance. _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. https://signup.live.com/signup.aspx?id=60969

6 10

setuproot: moving /dev/failed:No such file or directory
by Bernard Lheureux 06 Jul '10

06 Jul '10

Since my upgrade of the CentOS 5.4 to 5.5, it is impossible to boot from kernel 2.6.18-194.xx but older kernel (2.6.18-164-xx) boots perfectly The message I get is: setuproot: moving /dev/failed:No such file or directory* *And I get a Kernel Panic... It seems like the system was unable to mount /dev in ram, then it cannot find it... How is it possible and how to solve this ?* *-- (°- Bernard Lheureux Gestionnaire des MailingLists ML, TechML, LinuxML //\ http://www.bbsoft4.org/Mailinglists.htm ** MailTo:root@bbsoft4.org v_/_ http://www.bbsoft4.org/<<<<<< *>>>>>> http://www.portalinux.org/ ------------------------------------------------------------------------

2 1

DRBD update
by Daniel Bruno 05 Jul '10

05 Jul '10

Hello, Someone had some problem recently with DRBD updates? Thanks, -- Daniel Bruno http://danielbruno.eti.br

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