1、主库配置
1）vim /etc/my.cnf
[mysqld]
server-id=1 #服务器唯一ID，每个服务器必须不一样，不然会报错
log-bin=master-bin #开启binlog日志功能，可以指定绝对路径，不指定默认在datadir指定目录下
binlog-ignore-db = mysql
binlog-ignore-db = information_schema
binlog-do-db = mysqldb
binlog_format = Row/Statement/Mixed
systemctl restart mysqld #重启mysql
2）创建用于主从的用户以及权限，数据库中执行
grant replication slave on *.* to 'sms'@'%' identified by "密码";
grant replication slave on *.* to 'sms'@'%';
show master status; #查看主库信息（binlong名称和位置，用于节点同步开始位置）
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master-bin.000004 | 891 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
2、从库配置
[mysqld]
server-id=2
relay-log=mysql-relay #开启中继日志，可以指定绝对路径，不指定默认在datadir指定目录下
master_info_repository = TABLE
relay_log_info_repository = TABLE
relay_log_recovery = ON
systemctl restart mysqld #重启数据库
2）配置从库的主机信息，数据库中执行
change master to
master_host='192.168.118.133',
master_user='root',
master_password='[email protected]',
master_log_file='master-bin.000004',
master_log_pos= 891;
start slave； #启动
show slave status\G; 查看主从状态 #Slave_IO_Running: Yes Slave_SQL_Running: Yes 都为Yes则主从成功