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安装mariadb
修改配置文件
vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
server-id=1
log-bin=mysql-bin
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
重启数据库
systemctl restart mariadb
记得关闭防火墙
systemctl stop firewalld
在数据库可视化工具中操作
/*从库*/
show master status;
记住master_log_file和master_log_pos
/*从库操作挂载*/
change master to master_host="主库IP",
master_port=3306,
master_user="用户名",
master_password="用户密码",
master_log_file="mysql-bin.000001",
master_log_pos=245;
/*启动*/
start slave;
/*检查*/
show slave status;
/*停止*/
stop slave;
数据库双主操作（高可用）
再主库挂载从即可双主：
/*从库*/
show master status;
记住master_log_file和master_log_pos
/*主库操作挂载*/
change master to master_host="从库IP",
master_port=3306,
master_user="用户名",
master_password="用户密码",
master_log_file="mysql-bin.000001",
master_log_pos=245;
/*启动*/
start slave;
/*检查*/
show slave status;
/*停止*/
stop slave;
本文地址：https://blog.csdn.net/super_yun/article/details/108573684
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