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这篇文章给大家介绍如何进行MySQL多实例配置管理，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
MySQL 多实例配置管理
配置多实例my.cnf：
[root@open_source 3309]# cat /mysql/3307/my.cnf [mysqld] user=mysql basedir=/usr/local/mysql datadir=/mysql/3307/data socket=/tmp/mysql3307.sock port=3307 server_id=7 [root@open_source 3309]# cat /mysql/3308/my.cnf [mysqld] user=mysql basedir=/usr/local/mysql datadir=/mysql/3308/data socket=/tmp/mysql3308.sock port=3308 server_id=8 [root@open_source 3309]# cat /mysql/3309/my.cnf [mysqld] user=mysql basedir=/usr/local/mysql datadir=/mysql/3309/data socket=/tmp/mysql3309.sock port=3309 server_id=9
初始化多实例
mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/3307/data/ mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/3308/data/ mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/3309/data/
启动多实例：
[root@open_source 3309]# mysqld_safe --defaults-file=/mysql/3307/my.cnf & [root@open_source 3309]# mysqld_safe --defaults-file=/mysql/3308/my.cnf & [root@open_source 3309]# mysqld_safe --defaults-file=/mysql/3309/my.cnf & [root@open_source 3309]# ps -ef|grep mysql |grep -v grep root 10251 7511 0 18:57 pts/1 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/mysql/3307/my.cnf mysql 10428 10251 0 18:57 pts/1 00:00:00 /usr/local/mysql/bin/mysqld --defaults-file=/mysql/3307/my.cnf --basedir=/usr/local/mysql --datadir=/mysql/3307/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=open_source.err --pid-file=open_source.pid --socket=/tmp/mysql3307.sock --port=3307 root 10464 7511 0 18:59 pts/1 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/mysql/3308/my.cnf mysql 10641 10464 0 18:59 pts/1 00:00:01 /usr/local/mysql/bin/mysqld --defaults-file=/mysql/3308/my.cnf --basedir=/usr/local/mysql --datadir=/mysql/3308/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=open_source.err --pid-file=open_source.pid --socket=/tmp/mysql3308.sock --port=3308 root 10672 7511 0 19:00 pts/1 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/mysql/3309/my.cnf mysql 10849 10672 0 19:00 pts/1 00:00:01 /usr/local/mysql/bin/mysqld --defaults-file=/mysql/3309/my.cnf --basedir=/usr/local/mysql --datadir=/mysql/3309/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=open_source.err --pid-file=open_source.pid --socket=/tmp/mysql3309.sock --port=3309 [root@open_source 3309]# netstat -anlt |grep 33 tcp6 0 0 :::3307 :::* LISTEN tcp6 0 0 :::3308 :::* LISTEN tcp6 0 0 :::3309 :::* LISTEN
登录多实例server_id：
[root@open_source 3309]# mysql -S /tmp/mysql3307.sock -e "select @@server_id" +-------------+ | @@server_id | +-------------+ | 7 | +-------------+ [root@open_source 3309]# mysql -S /tmp/mysql3308.sock -e "select @@server_id" +-------------+ | @@server_id | +-------------+ | 8 | +-------------+ [root@open_source 3309]# mysql -S /tmp/mysql3309.sock -e "select @@server_id" +-------------+ | @@server_id | +-------------+ | 9 | +-------------+
停止多实例:
[root@open_source ~]# mysqladmin -S /tmp/mysql3307.sock shutdown 2020-03-10T00:04:36.491980Z mysqld_safe mysqld from pid file /mysql/3307/data/open_source.pid ended [1] Done mysqld_safe --defaults-file=/mysql/3307/my.cnf (wd: /mysql/3309) (wd now: ~) [root@open_source ~]# mysqladmin -S /tmp/mysql3308.sock shutdown 2020-03-10T00:04:45.304744Z mysqld_safe mysqld from pid file /mysql/3308/data/open_source.pid ended [2]- Done mysqld_safe --defaults-file=/mysql/3308/my.cnf (wd: /mysql/3309) (wd now: ~) [root@open_source ~]# mysqladmin -S /tmp/mysql3309.sock shutdown 2020-03-10T00:04:54.383289Z mysqld_safe mysqld from pid file /mysql/3309/data/open_source.pid ended [3]+ Done mysqld_safe --defaults-file=/mysql/3309/my.cnf (wd: /mysql/3309) (wd now: ~)
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