mysql 主从配置流程

说明：mysql主从都是二进制安装

mysql主：192.168.8.118

mysql从：192.168.8.125

1，修改mysql主的配置文件

[root@mastermysql mysql]#grep -in server-id /data/mysql/mysql3317/conf/my3317.cnf

11:#server-id = 3317

50:server-id=1

修改完mysql的配置文件后需要重新启动mysql

2,关掉mysql服务重启

[root@mastermysql mysql]# pwd

/usr/local/mysql

[root@mastermysql mysql]# ./bin/mysqladmin -S /data/mysql/mysql3317/run/mysql3317.sock shutdown

1. 设置别名    

[root@mastermysql mysql]# tail -5 /etc/profile

alias my3317stop='cd/usr/local/mysql && ./bin/mysqladmin -S /data/mysql/mysql3317/run/mysql3317.sock shutdown '

使设置的别名生效 

[root@mastermysql mysql]# source /etc/profile

3，启动mysql服务

[root@mastermysql mysql]# ./bin/mysqld_safe --defaults-file=/data/mysql/mysql3317/conf/my3317.cnf &

4，进入数据库，创建repl用户，密码为Ron_master_1，192.168.8网段都可登录

[root@mastermysql mysql]# /usr/local/mysql/bin/mysql -S /data/mysql/mysql3317/run/mysql3317.sock --prompt='mysqlmaster3317> '

mysqlmaster3317> CREATE USER 'repl'@'192.168.8.%' IDENTIFIED WITH mysql_native_password BY 'Ron_master_1';

5，赋予repl用户所有权限，并且该网段的所有ip都可登录

mysqlmaster3317> GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.8.%';

flush privileges;

6，查看binlog日志

mysqlmaster3317> SHOW MASTER STATUS;

+------------------+----------+--------------+------------------+-------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+------------------+----------+--------------+------------------+-------------------+

| mysql-bin.000002 |      157 |              |                  |                   |

+------------------+----------+--------------+------------------+-------------------+

1 row in set, 1 warning (0.00 sec)

7,修改mysql从的配置文件

[root@slavemysql mysql]# grep -in server-id /data/mysql/mysql3316/conf/my3316.cnf

11:#server-id = 3316

50:server-id=2

8,关掉mysql服务重启

[root@slavemysql mysql]# ./bin/mysqladmin -S /data/mysql/mysql3316/run/mysql3316.sock shutdown

（1）设置别名

[root@slavemysql mysql]# tail -3 /etc/profile

alias my3316stop='cd /usr/local/mysql && ./bin/mysqladmin -S /data/mysql/mysql3316/run/mysql3316.sock shutdown '

root@slavemysql mysql]# source /etc/profile

9,启动mysql从服务

[root@slavemysqlmysql]# ./bin/mysqld_safe --defaults-file=/data/mysql/mysql3316/conf/my3316.cnf &

10，进入mysql从的数据库

[root@slavemysql mysql]# /usr/local/mysql/bin/mysql -S /data/mysql/mysql3316/run/mysql3316.sock

11，与主库建立关联关系

mysql> change master to

    -> master_host='192.168.8.118',   # nysql主服务器IP地址

    -> master_user='repl',               # nysql主服务器用户名称  

    -> master_password='Ron_master_1',         # nysql主服务器用户密码

    -> master_port=3317,

    -> master_log_file='mysql-bin.000002',

    -> master_log_pos=157;

Query OK, 0 rows affected, 9 warnings (0.02 sec)

mysql> start slave;

mysql> flush privileges;

12，查看从节点的状态

show slave status\G;

出现双Yes

13，测试登录repl用户在从mysql上

[root@slavemysql mysql]# mysql -h192.168.8.118 -urepl -p'Ron_master_1' -P3317