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 slave1@10.64.5.170；
从库server-3上测试连接主库
mysql -h10.64.5.167 -uslave2 -p123456
mysql> show grants for slave2@10.64.5.172；
（5）设置slave复制
查询master的position值
mysql> SHOW MASTER STATUSG;
1. row **
File: mysql-bin.000001
Position: 120
Binlog_Do_DB: cattle
AI 代码解读
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 STATUSG;
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:
AI 代码解读
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
AI 代码解读
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
AI 代码解读
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
AI 代码解读
1 row in set (0.00 sec)
验证master
mysql> SHOW PROCESSLISTG;
1. row **
Id: 14
AI 代码解读
User: system user
Host:
db: NULL
AI 代码解读
Command: Connect
Time: 63424
State: Connecting to master
Info: NULL
2. row **
Id: 15
AI 代码解读
User: system user
Host:
db: NULL
AI 代码解读
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
AI 代码解读
User: slave1
Host: 10.64.5.170:47139
db: NULL
AI 代码解读
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
AI 代码解读
User: slave2
Host: 10.64.5.172:45629
db: NULL
AI 代码解读
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)
