I have a server that I have had for a little while now that was runnning perfectly fine. All of the sudden it started just using up a ton of the memory and started using up swap. This has caused the server to slow down and e-mail to stop working. I would upgrade to more memory but I suspect it is someone on the server doing something they shouldn't be. My only reasoning for this is due to the fact that this problem just suddenly arised. I cannot for the life of me determine where this ram usage is coming from.
Here are a few of the errors I have recently got just while logging in..
RIGHT after logging in...
id: cannot find name for group ID 0
id: cannot find name for user ID 0
[[email protected] root]# top
top: Unknown terminal "xterm" in $TERM
[[email protected] root]# killall -9 spamd
bash: /usr/bin/killall: Too many open files in system
I have added 2 screen shots as well. First one (top1) is what happens once I can get the command "top" to actually run (normally takes quite a few tries). Second attachement (top2) is after I sorted by mem usage.
About the server:
Control Panel (Plesk)
SMTP Server (QMail)
IMAP/POP3 Server (Courier-IMAP)
O.S. (Linux 2.4.9-e.68smp)