mysql AB复制

master 192.168.0.9

slave 192.168.0.10

1主备都安装mysql软件

2编辑master /etc/my.conf

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
log-bin=mysql-bin
server-id=1
innodb_flush_log_at_trx_commit=1
sync_binlog=1
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

3授权slave

[root@localhost mysql]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.0.45-log Source distribution
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> grant replication slave,reload,super on *.* to 'slave'@'192.168.0.10' identified by '10086';
mysql> flush privilegges;

从库登陆测试

mysql -uslave -p10086 -h 192.168.0.9

出现OK成功

4编辑slave /etc/my.cnf文件

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
server-id=2
master-host=192.168.0.9
master-user=slave
master-password=10086
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

5、在master上查看主库状态

mysql> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |     7156 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

6、查看从库状态

mysql> slave stop;
mysql> change master to master_host='192.168.0.9',master_user='slave',master_password='10086',master_log_file='mysql-bin.000001',master_log_pos=7156;
mysql> slave start
mysql> show slave status\G
*************************** 1. row ***************************
             Slave_IO_State: Waiting for master to send event
                Master_Host: 192.168.0.9
                Master_User: slave
                Master_Port: 3306
              Connect_Retry: 60
            Master_Log_File: mysql-bin.000001
        Read_Master_Log_Pos: 7156
             Relay_Log_File: mysqld-relay-bin.000002
              Relay_Log_Pos: 7068
      Relay_Master_Log_File: mysql-bin.000001
           Slave_IO_Running: Yes
          Slave_SQL_Running: Yes
            Replicate_Do_DB:
        Replicate_Ignore_DB:
         Replicate_Do_Table:
     Replicate_Ignore_Table:
    Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
                 Last_Errno: 0
                 Last_Error:
               Skip_Counter: 0
        Exec_Master_Log_Pos: 7156
            Relay_Log_Space: 7068
            Until_Condition: None
             Until_Log_File:
              Until_Log_Pos: 0
         Master_SSL_Allowed: No
         Master_SSL_CA_File:
         Master_SSL_CA_Path:
            Master_SSL_Cert:
          Master_SSL_Cipher:
             Master_SSL_Key:
      Seconds_Behind_Master: 0
1 row in set (0.00 sec)

7、测试master建立test10测试库，创建一个abc表，插入数据，查看是否同步到slave上

mysql> create database test10;
Query OK, 1 row affected (0.00 sec)
mysql> use test10;
Database changed
mysql> create table abc (name char,age int);
Query OK, 0 rows affected (0.01 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.01 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.02 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.01 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.02 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.01 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.01 sec)
mysql> insert into abc (name,age) values ('zhang',22);
Query OK, 1 row affected, 1 warning (0.01 sec)
mysql> insert into abc (name,age) values ('zhang',22);

查看slave是否有相同的信息

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| test               |
| test1              |
| test10             |
+--------------------+
5 rows in set (0.00 sec)
mysql> use test10
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select * from abc;
+------+------+
| name | age  |
+------+------+
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
| z    |   22 |
+------+------+

成功