一）双主环境配置

MairDB1 192.168.1.122 mariadb-10.0.10.tar.gz
maridb2 192.168.1.120 mariadb-10.0.10.tar.gz

二）操作系统版本

[root@localhost ~]# cat /etc/issue
CentOS release 6.4 (Final)
Kernel \r on an \m
Mage Education Learning Services
http://www.magedu.com
[root@localhost ~]# uname -r
2.6.32-358.el6.x86_64

三）主服务器1配置

1）修改不同的ID

2）双主各都启动二进制日志和中继日志

3）双主各自建立授权账号

4）确定双主的位置一样

vim /etc/my.cnf
thread_concurrency = 8
datadir = /mydata/data数据存放目录
log-bin=/mydata/binlogs/mysql-bin二进制目录
server-id       = 1
relay_log = /mydata/relaylogs/relay-bin中继日志目录
auto_increment_increment = 1自动增长步长
auto_increment_offset = 1自动增长类型的初始值

授权账号

MariaDB [(none)]> grant replication slave,replication client on *.* to 'Andy'@'192.168.%.%' identified by 'Andy.com';
MariaDB [(none)]> flush privileges;

查看服务器的起始位置

MariaDB [(none)]> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000002 |      636 |              |                  |
+------------------+----------+--------------+------------------+

四）主服务器2的配置

thread_concurrency = 2
datadir = /mydata/data
log-bin=/mydata/binlogs/mysql-bin
server-id       = 10
relay-log = /mydata/relaylogs/relay-bin
auto_increment_increment = 2
auto_increment_offset = 2

授权账号

MariaDB [(none)]> grant replication slave,replication client on *.* to 'Andy'@'192.168.%.%' identified by 'Andy.com';
Query OK, 0 rows affected (0.18 sec)
MariaDB [(none)]> flush privilges;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'privilges' at line 1
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.04 sec)
MariaDB [(none)]> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000002 |      636 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

 五）各服务器分别建立连接

主一建立连接

MariaDB [(none)]> change master to master_host='192.168.1.120',master_user='Andy',master_password='Andy.com',master_log_file='mysql-bin.000002',master_log_pos=636;
Query OK, 0 rows affected (0.08 sec)

主二建立连接

MariaDB [(none)]> change master to master_host='192.168.1.122',master_user='Andy',master_password='Andy.com',master_log_file='mysql-bin.000002',master_log_pos=636;
Query OK, 0 rows affected (0.11 sec)

六）测试

主1上创建数据库，主2查看是否同步
mysql> create database Andy;
Query OK, 1 row affected (0.08 sec)
mysql> show databases;
+---------------------+
| Database            |
+---------------------+
| information_schema  |
| Andy                |
| benet               |
| #mysql50#lost+found |
| mysql               |
| performance_schema  |
| test                |
+---------------------+
主2查看发现已同步
mysql> show databases;
+---------------------+
| Database            |
+---------------------+
| information_schema  |
| Andy                |
| #mysql50#lost+found |
| mysql               |
| performance_schema  |
| test                |
+---------------------+
主2创建，去主1查看
mysql> create database benet;
Query OK, 1 row affected (0.12 sec)
mysql> show databases;
+---------------------+
| Database            |
+---------------------+
| information_schema  |
| Andy                |
| benet               |
| #mysql50#lost+found |
| mysql               |
| performance_schema  |
| test                |
mysql> show databases;
+---------------------+
| Database            |
+---------------------+
| information_schema  |
| Andy                |
| benet               |
| #mysql50#lost+found |
| mysql               |
| performance_schema  |
| test                |
+---------------------+

PS：

    同步完成，需要注意的地方，二进制文件目录需要设置权限，不然启动服务会报错。