mysql啟動失敗“MySQL Daemon failed to start”

CentOS上，用命令：service mysqld restart 啟動mysql報錯：

# service mysqld restart
Stopping mysqld:                                           [  OK  ]
MySQL Daemon failed to start.
Starting mysqld:                                           [FAILED]

進入mysql相關目錄查看：

# cd /var/lib/mysql/
# ls 
hhw_global  ibdata1  ib_logfile0  ib_logfile1  localhost.localdomain.err  mysql  mysql.sock  test

查看服務器啟動日志：

# tail localhost.localdomain.err 
190610 20:16:57 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
190610 20:16:57 [ERROR] You need to use --log-bin to make --binlog-format work.
190610 20:16:57 [ERROR] Aborting

190610 20:16:57 [Note] /usr/libexec/mysqld: Shutdown complete

190610 20:16:57 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended

可用看到，兩行報錯說的是，開了--binlog-format選項卻沒有開啟bin log，因此mysql進程開不起來。使用如下命令，查看一下配置的位置：

# mysqld --verbose --help|grep -A 1 'Default options'

或者是：

# mysql --verbose --help|grep -A 1 'Default options'

查詢結果：

# mysql --verbose --help|grep -A 1 'Default options'
Default options are read from the following files in the given order:
/etc/mysql/my.cnf /etc/my.cnf ~/.my.cnf 

找到相應的my.cnf，修改相應配置項，重啟mysqld服務即可。