MySQL的组复制如何获得主节点的IP地址

我们可以使用下面的SQL中找到此主当组复制部署在单模式时的节点主机名：

mysql> SELECT * FROM performance_schema.replication_group_members WHERE MEMBER_ID = (SELECT VARIABLE_VALUE FROM performance_schema.global_status WHERE VARIABLE_NAME= 'group_replication_primary_member'); 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
| CHANNEL_NAME    | MEMBER_ID       | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
| group_replication_applier | 9176f4d3-c7f6-11e6-bcf7-fa163ee40410 | myhost  |  24801 | ONLINE  | 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
1 row in set (0.00 sec)

问题是：如何获取ip地址而不是主机名？

来源

2016-12-28 CrazyPig

您无法获取任何主机名的IP地址。如果你连接到某个主机，那么你知道该主机名的IP地址。这是在MySQL论坛上的mailing list，这将有助于你。

来源

2016-12-28 06:08:52 karman

好了，我们可以使用一个名为report_host的属性指向我们的IP地址，例如：

在我自己的机器，我部署三个节点的（S1，S2，S3），形成一个复制组，在所有my.cnf，定义它（10.202.7.88是我的IP地址）：

report_host=10.202.7.88

然后重新启动所有节点，并重新配置三个结而形成复制组，然后查询：

mysql> select * from performance_schema.replication_group_members; 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
| CHANNEL_NAME    | MEMBER_ID       | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
| group_replication_applier | 933a5345-d321-11e6-b971-fa163ee40410 | 10.202.7.88 |  24801 | ONLINE  | 
| group_replication_applier | 9abe6249-d321-11e6-bb5c-fa163ee40410 | 10.202.7.88 |  24802 | ONLINE  | 
| group_replication_applier | a1c89c34-d321-11e6-bbbc-fa163ee40410 | 10.202.7.88 |  24803 | ONLINE  | 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
3 rows in set (0.00 sec)

然后我们可以使用我们上面提到的sql获取主节点的ip地址：

mysql> SELECT * FROM performance_schema.replication_group_members WHERE MEMBER_ID = (SELECT VARIABLE_VALUE FROM performance_schema.global_status WHERE VARIABLE_NAME= 'group_replication_primary_member'); 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
| CHANNEL_NAME    | MEMBER_ID       | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
| group_replication_applier | 933a5345-d321-11e6-b971-fa163ee40410 | 10.202.7.88 |  24801 | ONLINE  | 
+---------------------------+--------------------------------------+-------------+-------------+--------------+ 
1 row in set (0.00 sec)

来源

2017-02-17 03:02:01 CrazyPig

MySQL的组复制如何获得主节点的IP地址

回答

相关问题