标签:bin 检查网络 两台 复制 更改 row 一个 with 地址
两台CentOS-7主机:node1(主):192.168.137.128,node2(从):192.168.137.129
两台主机均已安装MySQL5.7.31 ,且网络互通
主从原理大致有三个步骤:
配置文件确定
配置主库:
修改my.cnf 文件,在[mysqld] 段下添加:
# 服务id
server-id = 1
# 开启mysql binlog功能
log-bin = mysql-bin
# binlog模式
binlog_format = MIXED
配置好后重启mysql服务
[root@swarm-node1 mysql]# cd support-files/ [root@swarm-node1 support-files]# ls magic mysqld_multi.server mysql-log-rotate mysql.server [root@swarm-node1 support-files]# ./mysql.server restart
检查data目录是否有binlog日志生成
登录主数据库,新建一个复制账号
[root@swarm-node1 bin]# ./mysql -S/usr/local/mysql/mysql.sock -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.31-log MySQL Community Server (GPL) Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement. mysql> mysql> grant replication slave on *.* to ‘cpp‘@‘%‘ identified by ‘123.com‘; Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql>
配置从库:
修改my.cnf 文件,在[mysqld] 段下添加:
# 服务id
server-id = 2
# 开启mysql 启动中继日志
relay-log=relay-log
修改完后重启MySQL
登录从数据库,配置主从
在从库上指定主库地址,以及 同步账号、密码,并启动同步
mysql> mysql> mysql> change master to master_host=‘192.168.137.128‘,master_user=‘cpp‘,master_password=‘123.com‘; Query OK, 0 rows affected, 2 warnings (0.01 sec) mysql> start slave; Query OK, 0 rows affected (0.00 sec) mysql> mysql>
show slave status\G; 查看从库状态,查看Slave_IO_Running: Yes和 Slave_SQL_Running: Yes 为yes主从配置完成
如果启动同步后,第一个为Connecting,第二个为Yes,大部分为连接问题,请检查网络是否通,配置的用户名密码是否正确
标签:bin 检查网络 两台 复制 更改 row 一个 with 地址
原文地址:https://www.cnblogs.com/chenppp/p/13350921.html