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Another MySQL daemon already running with the same unix socket

The error when I try to start MySQL server in the VPS.

Another MySQL daemon already running with the same unix socket

I googled it and found the solution.

Since I am working on CentOS, enter the following command in console

service mysqld stop
mv /var/lib/mysql/mysql.sock /var/lib/mysql/mysql.sock.bak
service mysqld start

I think the problem is due to hard power off. The server is not shutdown properly. So the mysql.sock is not deleted on rebooting.

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