Centos7下配置安装mysql5.5主从复制(一主两从)

1:安装mysql5.5数据库

规划:

主:server-1---10.64.5.167    

从:server-2---10.64.5.170

从:server-3---10.64.5.172

数据目录:/var/lib/mysql


下载mysql5.5

#wget   http://cdn.mysql.com//Downloads/MySQL-5.5/MySQL-client-5.5.46-1.el7.x86_64.rpm
#wget   http://cdn.mysql.com//Downloads/MySQL-5.5/MySQL-server-5.5.46-1.el7.x86_64.rpm

安装

#rpm -ivh    MySQL-server-5.5.46-1.el7.x86_64.rpm
#rpm -ivh    MySQL-client-5.5.46-1.el7.x86_64.rpm



拷贝配置文件

#cp /usr/share/mysql/my-medium.cnf /etc/my.cnf


自启动:

#systemctl enable mysqld

2:配置mysql主库


主:server-1 10.64.5.167        

 

(1)配置创建需要同步的数据库cattle。

#mysql
mysql>CREATEDATABASE IF NOT EXISTS cattle COLLATE='utf8_general_ci' CHARACTER SET='utf8';
mysql>GRANT ALL ON cattle.*TO 'cattle'@'%' IDENTIFIED BY 'cattle';
mysql>GRANT ALL ON cattle.*TO 'cattle'@'localhost' IDENTIFIED BY 'cattle';


(2)创建用户

mysql> GRANT REPLICATION SLAVE,RELOAD,SUPER ON *.* TO slave1@'10.64.5.170' IDENTIFIED BY '123456';
mysql> GRANT REPLICATION SLAVE,RELOAD,SUPER ON *.* TO slave2@'10.64.5.172' IDENTIFIED BY '123456';
mysql> flush  privileges;


(3)配置文件

#vim /etc/my.cnf     
添加
server-id = 1
log-bin=mysql-bin
log-slave-updatesbinlog-do-db=cattle
binlog-ignore-db=mysql

重启mysql


(4)锁主库表

mysql> FLUSH TABLES WITH READ LOCK;


(4)显示主库信息

mysql> SHOW MASTER STATUS;


(5)另开一个终端,打包主库

#cd /var/lib/mysql
#tar czvf  cattle.tar.gz cattle



(6)解锁主库表

mysql> UNLOCK TABLES;



3:配置mysql从库


从:server-2 10.64.5.170    

从:server-3 10.64.5.172

   

(1)将cattle.tar.gz 传输到slav机器

#mv cattle.tar.gz /var/lib/mysql/
#cd /var/lib/mysql/
#tar xf cattle.tar.gz

(2)查看修改cattle文件夹权限

#chown -R mysql:mysql cattle


(3)配置文件

#vim /etc/my.cnf
------------server-2 添加
server-id =2
log_bin  = mysql-bin
relay_log  = mysql-relay-bin
read-only=1
replicate-do-db=cattle
log-slave-updates=1
------------server-3 添加
server-id =3
log_bin  = mysql-bin
relay_log  = mysql-relay-bin
read-only=1
replicate-do-db=cattle
log-slave-updates=1

重启slave的mysql


(4)验证连接

从库server-2上测试连接主库

#mysql -h10.64.5.167 -uslave1 -p123456
mysql> show grants for [email protected]


从库server-3上测试连接主库

# mysql -h10.64.5.167 -uslave2 -p123456
mysql> show grants for [email protected]

(5)设置slave复制

查询master的position值

mysql> SHOW  MASTER STATUS\G;
*************************** 1. row ***************************
            File: mysql-bin.000001
        Position: 120
    Binlog_Do_DB: cattle
Binlog_Ignore_DB: mysql
1 row in set (0.00 sec)
ERROR: 
No query specified
server-2配置
mysql>CHANGE MASTER TO MASTER_HOST='10.64.5.167',         
-> MASTER_USER='slave1',         
-> MASTER_PASSWORD='123456',         
-> MASTER_LOG_FILE='mysql-bin.000001',         
-> MASTER_LOG_POS=120;     -------MASTER_LOG_POS为主库的Position
server-3配置
mysql>CHANGE MASTER TO MASTER_HOST='10.64.5.167',         
-> MASTER_USER='slave2',         
-> MASTER_PASSWORD='123456',        
-> MASTER_LOG_FILE='mysql-bin.000001',         
-> MASTER_LOG_POS=120;


(6)slave启动

mysql> START SLAVE;
Query OK, 0 rows affected, 1 warning (0.00 sec)

运行SHOW SLAVE STATUS查看输出结果:

主要查看

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

mysql> SHOW SLAVE STATUS\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.64.5.167
                  Master_User: slave1
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 120
               Relay_Log_File: mysql-relay-bin.000002
                Relay_Log_Pos: 178995708
        Relay_Master_Log_File: mysql-bin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: cattle
          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: 178995562
              Relay_Log_Space: 178995864
              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)

验证master

mysql> SHOW  PROCESSLIST\G;
*************************** 1. row ***************************
     Id: 14
   User: system user
   Host: 
     db: NULL
Command: Connect
   Time: 63424
  State: Connecting to master
   Info: NULL
*************************** 2. row ***************************
     Id: 15
   User: system user
   Host: 
     db: NULL
Command: Connect
   Time: 63424
  State: Slave has read all relay log; waiting for the slave I/O thread to update it
   Info: NULL
*************************** 3. row ***************************
     Id: 25
   User: slave1
   Host: 10.64.5.170:47139
     db: NULL
Command: Binlog Dump
   Time: 62967
  State: Master has sent all binlog to slave; waiting for binlog to be updated
   Info: NULL
*************************** 4. row ***************************
     Id: 244
   User: slave2
   Host: 10.64.5.172:45629
     db: NULL
Command: Binlog Dump
   Time: 53898
  State: Master has sent all binlog to slave; waiting for binlog to be updated
   Info: NULL
16 rows in set (0.00 sec)
ERROR: 
No query specified

4:验证主从同步

在主库server-1中创建一个表

mysql> USE cattle;
Database changed
mysql> CREATE TABLE `test` (`name`  varchar(10) NULL ,`old`  char(10) NULL );
Query OK, 0 rows affected (0.00 sec)
mysql> DESC test;     
+-------+-------------+------+-----+---------+-------+
| Field | Type        | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| name  | varchar(10) | YES  |     | NULL    |       |
| old   | char(10)    | YES  |     | NULL    |       |
+-------+-------------+------+-----+---------+-------+
2 rows in set (0.00 sec)


从库查询是否有这个新表

mysql> USE cattle;
Database changed
mysql> DESC test;
+-------+-------------+------+-----+---------+-------+
| Field | Type        | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| name  | varchar(10) | YES  |     | NULL    |       |
| old   | char(10)    | YES  |     | NULL    |       |
+-------+-------------+------+-----+---------+-------+
2 rows in set (0.01 sec)



至此,mysql的主从复制完成。




你可能感兴趣的:(数据库,mysql)