1.啟動命令
systemctl start mysqld.service 或者 /etc/init.d/mysqld start 結果同樣的錯誤
2.錯誤是:
job for mysqld.service failed. see 'systemctl status mysqld.service' and 'journalctl -xn' for details.
3.按照提示輸入命令
systemctl status mysqld.service 或者 journalctl -xn
mysqld.service - sysv: mysql database server.
loaded: loaded (/etc/rc.d/init.d/mysqld)
active: failed (result: exit-code) since tue 2017-03-14 09:00:45 cst; 9s ago
process: 2550 execstart=/etc/rc.d/init.d/mysqld start (code=exited, status=1/failure)
starting sysv: mysql database server....
mysql daemon failed to start.
starting mysqld: [failed]
mysqld.service: control process exited, code=exited status=1
failed to start sysv: mysql database server..
unit mysqld.service entered failed state.
4.進一步檢視日誌:
vi /var/log/mysqld.log
如下:[error] /usr/sbin/mysqld: can't create/write to file '/var/run/mysqld/mysqld.pid' (errcode: 2 - no such file or directory)
[error] can't start server: can't create pid file: no such file or directory
5.建立該目錄
mkdir -p /var/run/mysqld/
6.啟動mysql服務
/etc/init.d/mysqld start
錯誤和原來一致
7.檢視日誌:
如下:[error] /usr/sbin/mysqld: can't create/write to file '/var/run/mysqld/mysqld.pid' (errcode: 13 - permission denied)
[error] can't start server: can't create pid file: permission denied
8.授權
chown mysql.mysql /var/run/mysqld/
9.啟動
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