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  • [转载]MGR变量group_replication_primary_member

    组复制的状态变量只有一个,目前在8.0.17这个版本上还是存在的,未来会被废弃掉,我们在单主的模式下,可以用来查看哪个节点是读写节点。

    mysql: [Warning] Using a password on the command line interface can be insecure.
    Welcome to the MySQL monitor.  Commands end with ; or g.
    Your MySQL connection id is 2087
    Server version: 8.0.17 MySQL Community Server - GPL
    
    Copyright (c) 2009-2019 Percona LLC and/or its affiliates
    Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
    
    Oracle is a registered trademark of Oracle Corporation and/or its
    affiliates. Other names may be trademarks of their respective
    owners.
    
    Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
    
    mysql> show status like 'group_replication_primary_member';
    +----------------------------------+--------------------------------------+
    | Variable_name                    | Value                                |
    +----------------------------------+--------------------------------------+
    | group_replication_primary_member | 1fb894d8-e752-11e9-a0a1-00505687032a |
    +----------------------------------+--------------------------------------+
    1 row in set (0.00 sec)
    
    group_replication_primary_member
    
    Shows the primary member's UUID when the group is operating in single-primary mode. If the group is operating in multi-primary mode, shows an empty string.
    
    The group_replication_primary_member status variable has been deprecated and is scheduled to be removed in a future version.
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  • 原文地址:https://www.cnblogs.com/aiaitie/p/11806187.html
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