The server suddenly seems to be very busy and not responding to anything: ssh or web requests.
It's automatically happened several times so apparently something's wrong with my system.
After reboot everything's back to normal and websites are fast and responsive. But approx 24 hours later, it suddenly goes into the same trouble again - very busy and occupied, not responding to anything, took dozens of minutes to just reboot.
I've no idea what may be the trigger of this. Misconfiguration? My PHP code? But all my websites have been fine on the previous host.
My distro is Debian 5.0. Things I've installed:
- apache, mysql, php
- rsnapshot (some cron jobs)
- vsftpd (though automatically stopped)
Anyone have any clue? What could be the problem? What logs do I need to see to find out which php script may have caused the problem?