Jun 25 2009

[Linux] Automated RPMForge Repository Installation

Category: Articles,Linux administrationFractalizeR @ 12:28 pm

Actually, I am using CentOS on production servers. CentOS native repository is very small and contains very necessary packages. If you need something more, you should consider using RPMForge repository as I do 😉 But to add this repository to CentOS you need to do several annoying actions. And this is annoyng when you do so on each new server you are asked to setup. So, I wrote small script to automate the job which I like to share with you now.

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Jun 01 2009

[Solution] Apache: No space left on device: Couldn’t create accept lock

Category: Articles,Linux administrationFractalizeR @ 3:31 pm

My friend asked me to check the server with this problem. I did and of course first I checked free space on disk using ‘df -h’, but free space was ok. Googling around I found the reason. Unclean shutdown of Apache left many semaphores opened. So, I cleaned them with

for i in `ipcs -s | awk '/nobody/ {print $2}'`; do (ipcrm -s $i); done

You should replace “nobody” in the command with the name of the user Apache is running on your system under. Also I increased semaphore limit in /etc/sysctl.conf by adding to the end of this file

kernel.msgmni = 1024
kernel.sem = 250 256000 32 1024

No system restart is needed to apply changes. Just issue 'sysctl -p‘ command. The solution was found here.

You may also want to switch to another SSLMutex implementation.

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