MySQL主从复制配置

配置主数据库：
my.cnf：
server-id       = 1
log-bin 
重启数据库
登录并查看：
[root@Mysql-server ~]# mysql -uroot -p199429
mysql> show variables like 'log_bin';  
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin       | ON    |
+---------------+-------+
mysql> show variables like 'server_id';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id     | 1     |
+---------------+-------+
建立主从复制账号：
mysql> grant replication slave on *.* to 'rep'@'192.1.1.%' identified by '199429';
mysql> select user,host from mysql.user;
+-----------+-----------+
| user      | host      |
+-----------+-----------+
| root      | 127.0.0.1 |
| bbs       | 192.1.1.% |
| keer      | 192.1.1.% |
| rep       | 192.1.1.% |
| wordpress | 192.1.1.% |
| root      | localhost |
+-----------+-----------+
实现对主数据库锁表只读：
mysql> flush table with read lock;
Query OK, 0 rows affected (0.00 sec)

mysql> show variables like '%timeout%';
+----------------------------+----------+
| Variable_name              | Value    |
+----------------------------+----------+
| connect_timeout            | 10       |
| delayed_insert_timeout     | 300      |
| innodb_lock_wait_timeout   | 50       |
| innodb_rollback_on_timeout | OFF      |
| interactive_timeout        | 28800    |#####
| lock_wait_timeout          | 31536000 |
| net_read_timeout           | 30       |
| net_write_timeout          | 60       |
| slave_net_timeout          | 3600     |
| wait_timeout               | 28800    |#####
+----------------------------+----------+
10 rows in set (0.00 sec)
查看主库状态：
mysql> show master status;
+-------------------------+----------+--------------+------------------+
| File                    | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------------+----------+--------------+------------------+
| Mysql-server-bin.000001 |      962 |              |                  |
+-------------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
新开窗口备份导出数据：
[root@Mysql-server ~]# mkdir -p /server/backup/ 
[root@Mysql-server ~]# mysqldump -uroot -p199429 --events -A -B |gzip >/server/backup/mysql_bak.$(date +%F).sql.gz
在此查看主库状态是否变化：
mysql> show master status;
+-------------------------+----------+--------------+------------------+
| File                    | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------------+----------+--------------+------------------+
| Mysql-server-bin.000001 |      962 |              |                  |
+-------------------------+----------+--------------+------------------+
1 row in set (0.00 sec)



从数据库：
配置文件my.cnf
server-id       = 2  ####保证唯一性
重启从数据库
登录从数据库：
[root@Mysql-server_02 backup]# mysql -uroot -p199429 -S /data/3306/mysql.sock 
mysql> show variables like 'log_bin';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin       | OFF   |
+---------------+-------+
1 row in set (0.00 sec)
mysql> show variables like 'server_id';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id     | 3     |
+---------------+-------+
恢复MySQLdump的数据
[root@Mysql-server_02 backup]# cd /server/backup/
[root@Mysql-server_02 backup]# gzip -d mysql_bak.2017-03-23.sql.gz
[root@Mysql-server_02 backup]# mysql -uroot -p'199429' -S /data/3306/mysql.sock <mysql_bak.2017-03-23.sql 

登录数据库配置复制参数
[root@Mysql-server_02 backup]# mysql -uroot -p'199429' -S /data/3306/mysql.sock
mysql> CHANGE MASTER TO
    -> MASTER_HOST='192.1.1.11',
    -> MASTER_PORT=3306,
    -> MASTER_USER='rep',
    -> MASTER_PASSWORD='199429',
    -> MASTER_LOG_FILE='Mysql-server-bin.000001',
    -> MASTER_LOG_POS=962;
费登录状态执行方法：
[root@Mysql-server_02 backup]# mysql -uroot -p'199429' -S /data/3306/mysql.sock<< EOF
CHANGE MASTER TO
    MASTER_HOST='192.1.1.11',
    MASTER_PORT=3306,
    MASTER_USER='rep',
    MASTER_PASSWORD='199429',
    MASTER_LOG_FILE='Mysql-server-bin.000001',
    MASTER_LOG_POS=962;
EOF
实际修改从库中的master.info文件
[root@Mysql-server_02 backup]# cat /data/3306/data/master.info 
18
mysql-server-bin.000001
962
192.1.1.11
rep
199429
3306
60
0
，。。。。。。。。

启动主从复制：
mysql> start slave;                                               
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.1.1.11
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: Mysql-server-bin.000001
          Read_Master_Log_Pos: 962
               Relay_Log_File: relay-bin.000002
                Relay_Log_Pos: 260
        Relay_Master_Log_File: Mysql-server-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: 962
              Relay_Log_Space: 410
              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
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 0
               Last_SQL_Error: 
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 1
1 row in set (0.00 sec)


测试主从复制功能（省略）