MySQL Daemon Lock issue

Question

Last night, my MySQL server went down unexpectedly. On attempting to restart (with service mysql restart - I\'m root) it merely hangs. With the mysql -u r

Answer 1

I had following error

[ERROR] Unix socket lock file is empty /var/lib/mysql/mysql.sock.lock.

This error came up as a result that my server was lacking space 100% use (see below)

Filesystem     1K-blocks     Used Available Use% Mounted on
/dev/xvda1      41153856 28531384  12187364  100% /

Make sure the folder exists with the proper permissions

chown mysql:mysql /var/lib/mysql/

And make sure to delete the file so the mysql server could generate a new one

rm /var/lib/mysql/mysql.sock.lock