0、背景
本实验为3节点架构,ip及主机名,且都安装了MySQL
Host | Port | Hostname |
---|---|---|
172.16.215.201 | 3306 | db201 |
172.16.215.202 | 3306 | db202 |
172.16.215.203 | 3306 | db203 |
1、主机配置(3个节点均操作)
vim /etc/hosts
127.0.0.1 localhost
172.16.215.201 db201
172.16.215.202 db202
172.16.215.203 db203
2、数据库配置(3个节点均操作)
set sql_log_bin=0;
set global super_read_only=0;
set global read_only=0;
alter user current_user() identified by 'a';
create user 'repl'@'%' identified by 'a';
grant replication slave on . to 'repl'@'%';
set sql_log_bin=1;
3、在主节点创建MGR(我的环境是db201已安装mysqlshell)
[root@db201 ~]# mysqlsh -urepl -pa -P3306
var c = dba.createCluster('myCluster')
c.addInstance('repl@db202:3306')
c.addInstance('repl@db203:3306')
c.status()
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