MYSQL双机热备配置(主-主)

MYSQL双机热备配置(主-主)

1. 安装MYSQL

   省略

   修改root密码：

UPDATE user SET password=PASSWORD('utl413') WHERE user='root';

FLUSH PRIVILEGES;

1. 分别使用root用户登录mysql

   创建需要同步的数据库（略）

   创建需要同步的用户：

CREATE USER 'cbc1'@'%' IDENTIFIED BY 'cbc123';

grant all privileges on CBC.* to cbc1@'%';

flush privileges;

分配同步权限

GRANT REPLICATION SLAVE,REPLICATION CLIENT,RELOAD,SUPER ON *.* TO 'cbc1'@'192.168.1.111' IDENTIFIED BY 'cbc123';

GRANT REPLICATION SLAVE,REPLICATION CLIENT,RELOAD,SUPER ON *.* TO 'cbc1'@'192.168.1.154' IDENTIFIED BY 'cbc123';

 

 

1. 配置my.cnf 文件

   Server A：

   [mysqld]

   datadir=/data/mysql

   socket=/data/mysql/mysql.sock

   user=mysql

   # Disabling symbolic-links is recommended to prevent assorted security risks

   symbolic-links=0

   #skip-grant-tables

    

   character-set-server=utf8

   collation-server=utf8_general_ci

   lower_case_table_names = 0

    

   server-id=1

   log-bin=/var/log/mysql/mysql-bin.log

   binlog-do-db=cbc

   replicate-do-db=cbc

   binlog-ignore-db=mysql

   lower_case_table_names=1

   log-slave-updates

   sync_binlog=1

   auto_increment_offset=1

   auto_increment_increment=2

   replicate-ignore-db=mysql,information_schema

    

   [client]

   port = 3306

   socket = /data/mysql/mysql.sock

   default-character-set=utf8

    

   [mysql]

   socket=/data/mysql/mysql.sock

   [mysqladmin]

   socket=/data/mysql/mysql.sock

   [mysqldump]

   socket=/data/mysql/mysql.sock

   [mysqld_safe]

   socket=/data/mysql/mysql.sock

   log-error=/var/log/mysqld.log

   pid-file=/var/run/mysqld/mysqld.pid

    

    

   Server B：

   [mysqld]

   datadir=/data/mysql

   socket=/data/mysql/mysql.sock

   user=mysql

   # Disabling symbolic-links is recommended to prevent assorted security risks

   symbolic-links=0

   #skip-grant-tables

    

   character-set-server=utf8

   collation-server=utf8_general_ci

   lower_case_table_names = 0

    

   server-id=2

   log-bin=/var/log/mysql/mysql-bin.log

   binlog-do-db=cbc

   replicate-do-db=cbc

   binlog-ignore-db=mysql

   replicate-ignore-db=mysql,information_schema,performance_schema

   log-slave-updates

   sync_binlog=1

   auto_increment_offset=2

   auto_increment_increment=2

    

   [client]

   port = 3306

   socket = /data/mysql/mysql.sock

   default-character-set=utf8

    

   [mysql]

   socket=/data/mysql/mysql.sock

   [mysqladmin]

   socket=/data/mysql/mysql.sock

   [mysqldump]

   socket=/data/mysql/mysql.sock

   [mysqld_safe]

   socket=/data/mysql/mysql.sock

   log-error=/var/log/mysqld.log

   pid-file=/var/run/mysqld/mysqld.pid

    

2. 配置完my.cnf文件后，重启两台服务器
3. 各自设置主从关系

   登陆主服务器：

   Show slave status\G

   

    

   登陆从服务器

   执行 stop slave

   设置主服务器关系

change master to

master_host='172.0.0.200',master_user='cbcsyn',master_password='utl@413',master_log_file='mysql-bin.000013',master_log_pos=106;

注意master_log_file 要对应 主服务器状态显示的File

Master_log_pos对应从主服务器的 Position

 

Show slave status\G