AWS RDS MySQL 双活

2024年5月21日 182次阅读 来源: Davy

是的，可以在RDS MySql Engine中进行Master-Master复制。但它需要一些操作与实例。先决条件：1）为启用二进制日志记录创建两个实例的只读副本。2）如果不需要，删除它们的只读副本。3）按照下面提到的主从设置说明进行操作。

在Master1上创建复制用户

grant replication slave on *.* to 'admin'@'%' identified by 'admin';
Query OK, 0 rows affected (0.00 sec)
请注意以下命令的输出
show server status
; + ---------------------------- + ---------- + --------- ----- + ------------------ + ------------------- + | 文件| 位置| Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | + ---------------------------- + ---------- + --------- ----- + ------------------ + ------------------- + | mysql-bin-changelog.000007 |120 | |  | | + ---------------------------- + ---------- + --------- ----- + ------------------ + ------------------- + 1 row in set（ 0.00秒）

在Master2上

mysql> call mysql.rds_set_external_master('master1.endpoint.amazonaws.com',3306,'admin','admin','**mysql-bin-changelog.000007**',**120**,0);
Query OK, 0 rows affected (0.05 sec)

mysql> call mysql.rds_start_replication; 
+-------------------------+ 
| Message                 |
+-------------------------+ 
| Slave running normally. | 
+-------------------------+ 

1 row in set (1.01 sec)

mysql -u admin123 -padmin123 -h master2.endpoint.amazonaws.com -e "show slave status\G;" | grep Running
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
================================================== ====================

在Master2上

grant replication slave on *.* to 'admin'@'%' identified by 'admin';
Query OK, 0 rows affected (0.00 sec)

show master status; 
+----------------------------+----------+--------------+------------------+-------------------+ 
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | 
+----------------------------+----------+--------------+------------------+-------------------+ 
| **mysql-bin-changelog.000007** | **120** | 

| | | +----------------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)
在Master1上
mysql> call mysql.rds_set_external_master('master2.endpoint.amazonaws.com',3306,'admin','admin','**mysql-bin-changelog.000007**',**120**,0);
Query OK, 0 rows affected (0.05 sec)

mysql> call mysql.rds_start_replication; +-------------------------+ | Message                 | +-------------------------+ | Slave running normally. | +-------------------------+ 1 row in set (1.01 sec)

mysql -u admin123 -padmin123 -h master1.endpoint.amazonaws.com -e "show slave status\G;" | grep Running
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it

    原文作者：Davy
    原文地址: https://zhuanlan.zhihu.com/p/32034770
    本文转自网络文章，转载此文章仅为分享知识，如有侵权，请联系博主进行删除。
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