MySQL server PID file could not be found! [FAILED] or service mysql restart. These types of server failure errors occurs, when my.cnf file is not perfectly defined. In that case you can have following types of errors:

• MySQL server PID file could not be found! [FAILED]
• Starting MySQL. The server quit without updating PID file (/var/lib/mysql/xxxxxx.pid).

Now, as we have identified the cause of error, we will have to locate the ' my.cnf ' file by using the following command.

locate *.cnf

and create my.cnf as given below.

cp /usr/share/mysql/my-small.cnf /etc/my.cnf

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