mysql主主同步MMM

搭建阿里云yum仓库：
vi ali.repo //建立阿里云仓库

[Ali]
name=CentOS-$releasever - Base
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

四台服务器安装以下程序：

yum install -y wget //安装下载wget软件

wget -O /etc/yum.repos.d/ali.repo http://mirrors.aliyun.com/repo/Centos-7.repo

mysql主主同步MMM

yum -y install epel-release //下载epel源

mysql主主同步MMM

yum clean all //清楚缓存
yum makecache //建立数据库缓存

yum -y install mariadb-server mariadb //安装数据库

在主服务器上
[[email protected] ~]# systemctl start mariadb
vi /etc/my.cnf //进入数据库配置文件中

[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
sync_binlog=1
auto_increment_increment=2
auto_increment_offset=1
datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sock

mysql主主同步MMM

service mariadb restart && systemctl enable mariadb //开启数据库并设置开机自启

netstat -anpt | grep 3306 //查看数据库端口

mysql主主同步MMM

-------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-----
[[email protected] ~]# scp /etc/my.cnf [email protected]:/etc/
[[email protected] ~]# scp /etc/my.cnf [email protected]:/etc/
[[email protected] ~]# scp /etc/my.cnf [email protected]:/etc/

mysql_secure_installation //数据库安装配置

mysql -uroot -pabc123 //进入数据库

grant replication slave on *.* to 'replication'@'192.168.80.%' identified by '123456';
flush privileges;
show master status \G

mysql主主同步MMM

在备用服务器上：
[[email protected] ~]# vi /etc/my.cnfvi /etc/my.cnf
修改一下Server-id ,其他从服务器也要修改

mysql主主同步MMM

[[email protected] ~]# service mariadb restart
[[email protected] ~]# mysql_secure_installation
[[email protected] ~]# mysql -uroot -pabc123

MariaDB [(none)]> grant replication slave on *.* to 'replication'@'192.168.80.%' identified by '123456';
MariaDB [(none)]> change master to master_host='192.168.80.100',master_user='replication',master_password='123456',master_log_file='mysql_bin.000001',master_log_pos=490;
MariaDB [(none)]> start slave;
MariaDB [(none)]> show slave status \G

mysql主主同步MMM

在主服务器master1中：

change master to master_host='192.168.80.101',master_user='replication',master_password='123456',master_log_file='mysql_bin.000003',master_log_pos=1430;
start slave;
show slave status \G