目录
继上篇文章继续
配置/etc/my.cnf文件
[mysqld_multi]
mysqld=/usr/local/mysql8.0.30/bin/mysqld_safe
mysqladmin=/usr/local/mysql8.0.30/bin/mysqladmin
log=/home/mysql8/data30/mysqld_multi.log
[mysqld]
user=mysql8
port=3306
server_id=3306
basedir=/usr/local/mysql8.0.30/
datadir=/home/mysql8/data30/
socket=/home/mysql8/data30/mysql.sock
character-set-server=UTF8MB4
lower_case_table_names=1
log_error=/var/log/mysqld.log
[mysqld3307]
user=mysql8
datadir=/home/mysql8/3307/data
port=3307
server_id=3307
socket=/home/mysql8/3307/data/mysql_3307.sock
log-bin=/home/mysql8/3307/binlog/mysql3307_bin
log_error=/home/mysql8/3307/data/mysqld.log
[mysqld3308]
user=mysql8
datadir=/home/mysql8/3308/data
port=3308
server_id=3308
socket=/home/mysql8/3308/data/mysql_3308.sock
log-bin=/home/mysql8/3308/binlog/mysql3308_bin
log_error=/home/mysql8/3308/data/mysqld.log
[client]
socket=/home/mysql8/data30/mysql.sock创建数据目录和日志目录
su - mysql8
mkdir 3307 3308
mkdir 3307/binlog
mkdir 3307/data
mkdir 3308/binlog
mkdir 3308/data
exit编译安装
mysqld --user=mysql8 \
--basedir=/usr/local/mysql8.0.30/ \
--datadir=/home/mysql8/3307/data \
--lower-case-table-names=1 \
--initialize
mysqld --user=mysql8 \
--basedir=/usr/local/mysql8.0.30/ \
--datadir=/home/mysql8/3308/data \
--lower-case-table-names=1 \
--initialize 
查看全部实例的状态
su - mysql8
mysqld_multi report
#这里可能需要配置下mysql8的环境变量
su - mysql8
vim .bash_profile /添加下述内容
export MYSQL_HOME=/usr/local/mysql8.0.30
export PATH=$MYSQL_HOME/bin:$PATH
#设置mysqld_multi.log文件的属主和属组
su - root
chown mysql8.mysql8 /home/mysql8/data30/mysqld_multi.log
启动单个实例
mysqld_multi start 3307
关闭单个实例
mysqld_multi stop 3307
关闭失败了，查看mysqld_multi.log日志，发现'root'@'localhost' 连接被拒绝了
那么就在关闭的时候指定用户和密码，但是要重置实例密码，不然密码是过期状态
mysqld_multi --user=root --password='123456' stop 3307
重置密码
mysqladmin -S 3307/data/mysql_3307.sock -P 3307 -uroot -p'M>_2k3fXO&g7' password '123456'
mysqladmin -S 3308/data/mysql_3308.sock -P 3308 -uroot -p'CriDygysI3*H' password '123456'
最后再尝试关闭，已经OK
mysqld_multi --user=root --password='123456' stop 3308
启动多个实例
mysqld_multi start
关闭多个实例
mysqld_multi stop
su - root
vim /etc/my.cnf
#[mysqld_multi]模块中添加
user=root
pass=123456
#如果每个MySQL服务器的密码不一样，只需要在[mysqld_multi]中添加多个密码即可
user=root
pass=123456
pass=123457
