mysql 簡單主從
阿新 • • 發佈:2017-05-19
.cn 虛擬機克隆 sql stop keyword ttr mysqld nlog mysq
主服務器master
[[email protected] ~]# vim /etc/my.cnf
[mysqld]
log-bin=mysql-bin #必須開啟log-bin
server-id=129 #服務器ID
從服務器slave
[[email protected] ~]# vim /etc/my.cnf
[mysqld]
log-bin=mysql-bin #開啟log-bin(可選)
server-id=129 #服務器ID
[root@localhost ~]# systemctl restart mysqld #主從服務器
mysql> GRANT REPLICATION SLAVE ON *.* to ‘mysync‘@‘%‘ identified by ‘123456‘; #主服務器授權賬號
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 439 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
#查看master狀態
mysql> stop slave;
mysql>change master to master_host=‘192.168.100.129‘,master_user=‘mysync‘,master_password=‘123456‘, master_log_file=‘mysql-bin.000004‘,master_log_pos=308;
mysql> stop slave;
mysql> show slave status\G #查看slave狀態
Slave_IO_Running: Yes #必須為Yes
Slave_SQL_Running: Yes #必須為Yes
如果在master 也配置 slave 架構就成了主主模式 需要註意數據一致性的問題
虛擬機克隆需要重新生成auto.cnf
[root@localhost ~]# mv /var/lib/mysql/auto.cnf /tmp
[root@localhost ~]# systemctl restart mysqld
mysql 簡單主從