I have my dedicated server (P4 3.0 1gbram) and when i get many visits my site always crashes and mysql just starts working when i restart it. Now, i just checked error logs, by /var/log/httpd/error_log and what i get is : [notice] caugh sigterm, shutting down. what is that? please if u have any suggestion it would help. im having really bad problems
sigterm is a signal send to a program with the instruction to terminate. It usually comes from the OS.
might be reaching maximum socket usage or overloading the process.. could be a good idea to put mysql server on a different machine or load balance it across a couple of machines. not too keen on this area
I think you need better cpu (dual core?) and more ram. Adding more RAM will surely help in your case.
Here's a list of the Linux signals: http://www.comptechdoc.org/os/linux/programming/linux_pgsignals.html Also check the entries for the same time in your /var/log/messages file