一、master01\master02\slave01\slave02都需要安装MYSQL数据库
配置ALI云源，然后安装epel-release源。
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum -y install epel-release
yum clean all && yum makecache
二、搭建本地YUM源----下面直接做
yum -y install mariadb-server mariadb
systemctl stop firewalld
setenforce 0
systemctl start mariadb
user = mysql
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
character_set_server=utf8
pid-file = /usr/local/mysql/mysqld.pid
socket = /usr/local/mysql/mysql.sock
server-id = 1
log-error=/usr/local/mysql/data/mysql_error.log
general_log=ON
general_log_file=/usr/local/mysql/data/mysql_general.log
slow_query_log=ON
slow_query_log_file=mysql_slow_query.log
long_query_time=1
binlog-ignore-db=mysql,information_schema
log_bin=mysql_bin
log_slave_updates=true
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=1
三、修改m1主配置文件
vi /etc/my.cnf //
[mysqld]
log_error=/var/lib/mysql/mysql.err
log=/var/lib/mysql/mysql_log.log
log_slow_queries=/var/lib/mysql_slow_queris.log
binlog-ignore-db=mysql,information_schema
character_set_server=utf8
log_bin=mysql_bin
server_id=1
log_slave_updates=true
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=1
systemctl start mariadb
netstat -anpt | grep 3306
-------没有问题后，把配置文件复制到其它3台数据库服务器上并启动服务器-----
scp /etc/my.cnf [email protected]:/etc/
-----注意：配置文件中的server_id 要修改-----
------------配置主主复制----两台主服务器相互复制------
show master status; //记录日志文件名称和 位置值，在两台主上查看。