linux学习笔记-第二十八课-MySQL主从复制，读写分离配置

MySQL主从配置

配置准备将要配置的数据库进行主从同步，主从的服务器上都要有同一个数据库

一、配置mysql主服务器

[[email protected] ~]# vim /etc/my.cnf
....................................
log-bin=mysql-bin     <== 打开日志格式
....................................
server-id=1           <== 主从标记
...............................
可选添加配置，筛选库
binlog-do-db=db1,db2 #需要同步的库
binlog-ignore-db=db1,db2 #忽略不同步的库
.............................
[[email protected] backup]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.42-log MySQL Community Server (GPL)

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

mysql> grant replication slave on *.* to ‘repl‘@‘192.168.1.13‘ identified by ‘123‘;
Query OK, 0 rows affected (0.00 sec)

mysql>mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)

mysql> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000014 |      332 |              |                  |
+------------------+----------+--------------+------------------+

二、配置mysql从服务器

# 修改从mysql的配置文件
[[email protected] ~]# vim /etc/my.cnf
...............................
server-id=2     修改id号，用来区分主从服务器标识
...............................
[[email protected] tmp]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 5.5.43-log MySQL Community Server (GPL)

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

mysql> slave stop;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> change master to master_host=‘192.168.1.11‘, master_port=3306, master_user=‘repl‘,
 master_password=‘123‘, master_log_file=‘mysql-bin.000014‘, master_log_pos=332;
Query OK, 0 rows affected (0.08 sec)

mysql> slave start;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.11
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000014
          Read_Master_Log_Pos: 332
               Relay_Log_File: slave-relay-bin.000003
                Relay_Log_Pos: 253
        Relay_Master_Log_File: mysql-bin.000014
        # 这部分提示为，YES
             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: 332
              Relay_Log_Space: 409
              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

# 这部分没有错误提示，OK
                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)

ERROR:
No query specified

接下来就可以测试主从服务器了