So I was trying to run a backup process in Plesk 8.1 and the whole panel froze up on me (it's happened numerous times before).
Anyway, since the panel was all frozen up I just went into SSH and did a simple "reboot" (also, as done before many times). Only problem is, this time after I did the reboot the server never actually came back online... it seems to be locked up or something, I have no idea what.
I called my host and they are looking into it but they have no idea what's going on either and it's taking them forever to figure it out all the meanwhile my sites are down.... this isn't good.
Does anyone have any suggestions or advice as to why this could be occuring?
Someone/something corrupted the kernel, or something was writing to critical system files when it froze (that may even be the cause of the freezing), or newly installed software/hardware problems caused a kernel panic.
I turns our that an old installation of APF was still stuck in the boot routine of the server.... so when we rebooted, all the IP tables got trashed and everyone had their access blocked to the server.