غیرفعال شدن خود به خود MySQL سرور و عدم Run مجدد

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mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/var/lib/mysql/mysql                   .sock' (2)'
Check that mysqld is running and that the socket: '/var/lib/mysql/mysql.sock' ex                   ists!