概述
MySQL 5.7 MGR单主确定主节点是哪个,我们可以通过成员ID来判断,然后结合read_only参数来确认。
[root@localhost ~]# mysql -uroot -p -P 3306 -h 127.0.0.1
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 857246
Server version: 5.7.26-29-log Percona 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> status
--------------
mysql Ver 14.14 Distrib 5.7.26-29, for Linux (x86_64) using EditLine wrapper
Connection id:
最后
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