并行復制監(jiān)控

復制的監(jiān)控依舊可以通過SHOW SLAVE STATUS\G，但是MySQL 5.7在performance_schema架構下多了以下這些元數(shù)據(jù)表，用戶可以更細力度的進行監(jiān)控：

mysql> show tables like 'replication%';
+---------------------------------------------+
| Tables_in_performance_schema (replication%) |
+---------------------------------------------+
| replication_applier_configuration           |
| replication_applier_status                  |
| replication_applier_status_by_coordinator   |
| replication_applier_status_by_worker        |
| replication_connection_configuration        |
| replication_connection_status               |
| replication_group_member_stats              |
| replication_group_members                   |
+---------------------------------------------+
8 rows in set (0.00 sec)