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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
安装
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| #rpm -ivh MySQL-server-5.5.46-1.el7.x86_64.rpm
#rpm -ivh MySQL-client-5.5.46-1.el7.x86_64.rpm
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拷贝配置文件
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| #cp /usr/share/mysql/my-medium.cnf /etc/my.cnf
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自启动： 1
| #systemctl enable mysqld
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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。 1
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| #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';
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（2）创建用户 1
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| 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;
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（3）配置文件
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| #vim /etc/my.cnf
添加
server-id = 1
log-bin=mysql-bin
log-slave-updatesbinlog-do-db=cattle
binlog-ignore-db=mysql
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重启mysql
（4）锁主库表 1
| mysql> FLUSH TABLES WITH READ LOCK;
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（4）显示主库信息 1
| mysql> SHOW MASTER STATUS;
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（5）另开一个终端，打包主库
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| #cd /var/lib/mysql
#tar czvf cattle.tar.gz cattle
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（6）解锁主库表
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 1
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| #mv cattle.tar.gz /var/lib/mysql/
#cd /var/lib/mysql/
#tar xf cattle.tar.gz
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（2）查看修改cattle文件夹权限 1
| #chown -R mysql:mysql cattle
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（3）配置文件 1
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| #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
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| ------------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
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重启slave的mysql
（4）验证连接 从库server-2上测试连接主库
从库server-3上测试连接主库
（5）设置slave复制 查询master的position值 1
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| 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
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| 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
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| 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;
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（6）slave启动 1
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| mysql> START SLAVE;
Query OK, 0 rows affected, 1 warning (0.00 sec)
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运行SHOW SLAVE STATUS查看输出结果： 主要查看 Slave_IO_Running: Yes
Slave_SQL_Running: Yes
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| 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)
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验证master 1
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| 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
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4：验证主从同步 在主库server-1中创建一个表 1
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| 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)
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从库查询是否有这个新表 1
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| 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)
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至此，mysql的主从复制完成。
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