1[Unit] 2Description=MySQL database server 3 4[Service] 5ExecStartPre=/bin/sh -c 'test "`ls -1 /var/lib/mysql | wc -l`" != "0" || mysql_install_db --basedir=/usr --datadir=/var/lib/mysql && chown -R mysql:mysql /var/lib/mysql' 6ExecStartPre=install -d -o mysql -g root -m 0755 /var/log/mysql 7ExecStart=/usr/bin/mysqld_safe --log-error=/var/log/mysql/mysqld.log 8Restart=always 9User=mysql 10RuntimeDirectory=mysql 11RuntimeDirectoryMode=0755 12 13[Install] 14WantedBy=multi-user.target 15