vi /etc/yum.repos.d/MariaDB.repo

[mariadb]
name = MariaDB
baseurl = https://mirrors.aliyun.com/mariadb/yum/10.5/centos7-amd64/
gpgkey=https://mirrors.aliyun.com/mariadb/yum/RPM-GPG-KEY-MariaDB
gpgcheck=1

yum install mariadb mariadb-server

vim /etc/my.cnf.d/server.cnf

在mysqld下添加以下内容
server_id = 1
log_bin = mysql-bin

systemctl restart mariadb

grant replication slave on *.* to 'slave'@'192.168.59.%' identified by '123';

停止slave，停止同步，开始修改信息
stop slave;
写master的信息
CHANGE MASTER TO
  -> MASTER_HOST='192.168.59.143',
  -> MASTER_USER='slave',
  -> MASTER_PASSWORD='123',
  -> MASTER_PORT=3306,
  -> MASTER_USE_GTID = current_pos;

 开启从，开始同步
start slave;

show slave status \G;