I have a webserver with CPanel installed. The partition that holds the log files is too small and rapidly fills up before the end of the month.

How can I allocate more space to that partiion?

OR

Is there another solution?

This is a very active web server and I would prefer to not have any downtime in solving this problem, or minimal down time at best.

You can use GTKParted or parted to resize a partition but you probably just need to optimize logrotate for the webserver. Are you using Apache?

Yes, I'm using Apache 1.3.29

/dev/hda2 3.9G 3.7G 116M 97% /usr

This is my dilema... at this rate that partition should be 10G

I'm a newbie, but this might be an easy answer for you:
Remember that you can mount partitions anywhere, not just at / or /mnt.
Suppose your big log files are going in /var/biglogs/ and that directory is on a partition that is too small.
Find a new, big partition somewhere (maybe install a new hdd?), make a filesystem on it and then mount it as /var/biglogs.
Alternatively, you could mount your new partition as /ServerLogs and then tell your server that it should put its logs there, not wherever it is currently putting them (this information will probably be in a config file somewhere).

Hope this helps.

http://httpd.apache.org/docs/programs/rotatelogs.html
http://httpd.apache.org/docs/logs.html

Hey Maistre ! I want to installe CPANEL on my mandrake machine but I don't know how ? Can you give me a hand by email or direct chat ? I would really appreciate it. Thank