PLEASE help: MySQL server problems through socket '/var/lib/mysql/mysql.sock' (2).
I am a novice hosting reseller and I woke this morning to find ALL the websites i'm hosting that require MySQL to run have suddenly gone down and showing variants of the below phrase:
Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
What has happened here? All sites have been installed using auto-installer Softaculous and have been running perfectly for a few months until now, its almost as if someone has turned off MySQL over night. I obviously have some very angry customers at the moment, could somebody please advise me on (a preferably simple way) how to turn it back on? Will their data be lost?
I'm panicking a fair bit here. Any help would be greatly appreciated.