一 基礎環境

二 實際部署

2.1 安裝MySQL

  1 [root@Master ~]# yum list installed | grep mysql	#查看是否存在其他MySQL組件
  2 [root@Master ~]# yum -y remove mysql-libs.x86_64	#為避免沖突引發報錯，卸載已存在的組件
  3
 
 [root@Master ~]# wget http://repo.mysql.com/mysql-community-release-el6-7.noarch.rpm
  4 [root@Master ~]# rpm -ivh mysql-community-release-el6-7.noarch.rpm
  5 [root@Master ~]# yum install mysql-community-server -y
  6 [root@Master ~]# chkconfig --list | grep mysqld		#查看MySQL是否加入啟動項
  7 [root@Master ~]# chkconfig mysqld on

2.2 初始化MySQL

  1 [root@Master ~]# service mysqld start
  2 [root@Master ~]# mysql_secure_installation
  3 [root@Master ~]# service iptables stop
  4 [root@Master ~]# chkconfig iptables off
  5 [root@Master ~]# vi /etc/sysconfig/selinux
  6 SELINUX=disabled

2.3 master my.cf配置

  1 [root@Master ~]# vi /etc/my.cnf
  2 [mysqld]
  3 ……
  4 server-id=1			#設置主服務器master的id
  5 log-bin=mysql-bin		#配置二進制變更日誌命名格式

  1 # 不同步哪些數據庫
  2 binlog-ignore-db = mysql
  3 binlog-ignore-db = test
  4 binlog-ignore-db = information_schema
  5 # 只同步哪些數據庫，除此之外，其他不同步
  6 binlog-do-db = mysqltest

2.4 創建賬號

  1 [root@Master ~]# mysql -uroot -p
  2 Enter password:
  3 mysql> grant replication slave on *.* to ‘repl_user‘@‘172.24.8.11‘ identified by ‘x12345678‘;
  4 mysql> flush privileges;
  5 [root@Master ~]# service mysqld restart
  6 [root@Master ~]# mysql -uroot -p
  7 Enter password:
  8 mysql> show master status;

2.5 slave my.cf配置

  1 [root@Master ~]# vi /etc/my.cnf
  2 [mysqld]
  3 server-id=2			#設置從服務器slave的id
  4 log-bin=mysql-bin		#如果此slave是其他slave的master，則此項也必須開啟
  5 relay_log=mysql-relay-bin	#配置二進制relay日誌命名格式
  6 log_slave_updates=1		#表示slave將復制事件寫進自己的二進制日誌
  7 read_only=1

2.6 啟動slave

  1 [root@Slave01 ~]# service mysqld restart
  2 [root@Slave01 ~]# mysql -uroot -p
  3 Enter password:
  4 mysql> change master to master_host=‘172.24.8.10‘,
  5     -> master_user=‘repl_user‘,
  6     -> master_password=‘x12345678‘,
  7     -> master_log_file=‘mysql-bin.000001‘,
  8     -> master_log_pos=120;
  9 mysql> show slave status\G			#查看slave狀態
 10 ……
 11 Slave_IO_State:
 12 Master_Host: 172.24.8.10
 13 Master_User: repl_user
 14 Master_Port: 3306
 15 Connect_Retry: 60
 16 Master_Log_File: mysql-bin.000001
 17 Read_Master_Log_Pos: 120
 18 Relay_Log_File: =mysql-relay-bin.000001
 19 Relay_Log_Pos: 4
 20 Relay_Master_Log_File: mysql-bin.000001
 21 Slave_IO_Running: No
 22 Slave_SQL_Running: No
 23 ……
 24 Exec_Master_Log_Pos: 120
 25 Relay_Log_Space: 120
 26 ……
 27 Seconds_Behind_Master: NULL
 28 Master_SSL_Verify_Server_Cert: No
 29 Master_Info_File: /var/lib/mysql/master.info
 30 SQL_Delay: 0
 31 SQL_Remaining_Delay: NULL
 32 Slave_SQL_Running_State:
 33 Master_Retry_Count: 86400
 34 ……

2.7 手動同步

三 啟動主從

3.1 Slave啟動主從服務

  1 [root@Slave01 ~]# service mysqld restart
  2 [root@Slave01 ~]# mysql -uroot -p
  3 Enter password:
  4 mysql> start slave;
  5 mysql> show slave status\G			#查看slave狀態
  6 ……
  7 Slave_IO_State: Waiting for master to send event
  8 Master_Host: 172.24.8.10
  9 Master_User: repl_user
 10 Master_Port: 3306
 11 Connect_Retry: 60
 12 Master_Log_File: mysql-bin.000001
 13 Read_Master_Log_Pos: 120
 14 Relay_Log_File: =mysql-relay-bin.000001
 15 Relay_Log_Pos: 283
 16 Relay_Master_Log_File: mysql-bin.000002
 17 Slave_IO_Running: YES
 18 Slave_SQL_Running: YES
 19 ……
 20 Exec_Master_Log_Pos: 120
 21 Relay_Log_Space: 120
 22 ……
 23 Master_Info_File: /var/lib/mysql/master.info

3.2 驗證主從

  1 [root@Master ~]# mysql -uroot -p
  2 Enter password:
  3 mysql> create database mysqltest;
  4 mysql> use mysqltest;
  5 mysql> create table user(id int(5),name char(10));
  6 mysql> insert into user values (00001,‘zhangsan‘);
  7 在Slave從服務器上進行驗證：
  8 [root@Master ~]# mysql -uroot -p
  9 Enter password:
 10 mysql> show databases;
 11 mysql> select * from mysqltest.user;

  1 mysql> reset slave；

002.MySQL高可用主從復制部署