mysql 主主环境搭建,MySQL双主环境搭建
一、安装MySQL-server
二、环境描述
console1： 1.1.1.1/24
console2： 1.1.1.2/24
三、创建授权账户
console1 作为 console2 的master，console1要允许console2的接入
console1 --> mysql
grant replication slave on *.* to 'shdbreplicate'@'1.1.1.2' identified by 'db_console2';console2 作为 console1 的master，console2要允许console1的接入
console2 --> mysql
grant replication slave on *.* to 'shdbreplicate'@'1.1.1.1' identified by 'db_console1';四、修改/etc/my.cnf文件并
重启数据库：service mysqld restart
console1
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# modified by zhongmou.llp
bind-address = 0.0.0.0
server-id = 1
auto-increment-increment = 2
auto-increment-offset = 1
log-bin = master-bin
log-bin-index = master-bin.index
binlog-do-db = project
binlog-do-db = project_console
binlog-ignore-db = mysql
binlog-ignore-db = test
slave-skip-errors=1062
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pidconsole2
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# modified by zhongmou.llp
bind-address = 0.0.0.0
server-id = 2
auto-increment-increment = 2
auto-increment-offset = 2
log-bin = master-bin
log-bin-index = master-bin.index
binlog-do-db = project
binlog-do-db = project_console
binlog-ignore-db = mysql
binlog-ignore-db = test
slave-skip-errors=1062
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid五、查看数据库master状态
File和position可能随时会变，在使用时以实际的为准
console1 --> mysql
show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000006 | 107 | | |
+------------------+----------+--------------+------------------+
1 row in setconsole2 --> mysql
show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000008 | 201 | | |
+------------------+----------+--------------+------------------+
1 row in set六、互为备用数据库的配置
console1 --> mysql
stop slave;
change master to master_host='1.1.1.2',master_user='shdbreplicate',master_password='db_console1',
master_log_file='mysql-bin.000008',master_log_pos=201;
start slave;console2 --> mysql
stop slave;
change master to master_host='1.1.1.1',master_user='shdbreplicate',master_password='db_console2',
master_log_file='mysql-bin.000006',master_log_pos=107;
start slave;七、验证双主建立成功
检查Slave_IO_Running，Slave_SQL_Running都为Yes,与Errno相关的参数都为空或者为0
console1和console2--> mysql
show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes八、功能验证
在双主环境下增删改数据，看对方数据库是否能同步。