判断MySQL是否已经开启binlog

SHOW VARIABLES LIKE 'log_bin';

mysql> SHOW VARIABLES LIKE 'log_bin';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin       | OFF   |
+---------------+-------+
5 rows in set (0.00 sec)

进入my.cnf 配置 Mysql

#一个随机的id
server-id=1

#/data/mysql_data3307/具有路径作用，mysql-bin生成文件的前缀
log-bin=/data/mysql_data3307/mysql-bin
binlog-format=ROW

重启 Mysql

# CentOS 6
service mysqld restart 
 
# CentOS 7
systemctl restart mysqld

若增加后无法启动MySQL，考虑SELinux问题。

Job for mysqld.service failed because the control process exited with error code. 
See "systemctl status mysqld.service" and "journalctl -xe" for details.

不需要重启Linux，输入命令：

setenforce 0