Mysql报错解决Can't connect to local MySQL server through socket | PID file could not be found

Problem Description

After landing mysql restart the machine being given as follows:
of Can not Connect to local MySQL Server through socket '/var/lib/mysql/mysql.sock' (111)
to restart the mysql service being given as follows:
! ERROR MySQL (Percona Server) could not PID File be found!

Solution

mkdir -p /var/run/mysqld/
chown -R mysql:mysql /var/run/mysqld/