MySql主从复制实验
浏览数：20 /
时间：2015年06月12日
实验环境准备：
| IP | 主机名 | 角色 |
| 133.72.24.201 | hadoop001 | master |
| 133.72.24.202 | hadoop002 | slave |
| Mysql数据库软件版本 | MySQL-server-5.6.23-1.el6.x86_64 |
| 操作系统 | CentOS release 6.4 (Final) |
| 内核版本 | 2.6.32-358.el6.x86_64 |
1、卸载原有 系统的mysql组件
[root@hadoop001 Downloads]# rpm -qa | grep -i mysql
mysql-libs-5.1.66-2.el6_3.x86_64
[root@hadoop001 Downloads]# rpm -e mysql-libs-5.1.66-2.el6_3.x86_64 --nodeps
2、安装mysql
[root@hadoop001 Downloads]# rpm -ivh MySQL-server-5.6.23-1.el6.x86_64
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in ‘/root/.mysql_secret‘.
You must change that password on your first connect,
no other statement but ‘SET PASSWORD‘ will be accepted.
[root@hadoop001 Downloads]# rpm -ivh MySQL-client-5.6.23-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-client ########################################### [100%]
3、修改配置文件启动mysql服务！
[root@hadoop001 Downloads]# echo ‘explicit_defaults_for_timestamp=true‘ >> /usr/my.cnf
[root@hadoop001 Downloads]# service mysql start
Starting MySQL... SUCCESS!
4、登录mysql数据库并修改密码
[root@hadoop001 Downloads]# cat /root/.mysql_secret
# The random password set for the root user at Thu Mar 5 23:07:44 2015 (local time): 60MhiIwDfYxoNOEA
[root@hadoop001 Downloads]# mysql -u root -p60MhiIwDfYxoNOEA
修改密码：
mysql> SET PASSWORD FOR ‘root‘@‘localhost‘ = PASSWORD(‘mysql123‘);
Query OK, 0 rows affected (0.00 sec)
mysql> SET PASSWORD FOR ‘root‘@‘::1‘ = PASSWORD(‘mysql123‘);
Query OK, 0 rows affected (0.00 sec)
mysql> SET PASSWORD FOR ‘root‘@‘127.0.0.1‘ = PASSWORD(‘mysql123‘);
Query OK, 0 rows affected (0.00 sec)
mysql> SET PASSWORD FOR ‘root‘@‘hadoop001‘ = PASSWORD(‘mysql123‘);
Query OK, 0 rows affected (0.00 sec)
mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘mysql123‘WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)
mysql> flush PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
5、master设置
5.1、停止mysql服务
service mysql stop
5.2、vi /usr/my.cnf
1 # log_bin,必须开启bin日志. 2 log_bin=master-bin.log 3 # server_id = .....必须设置server_id,保证集群内的唯一性.可以用ip地址最后3位 4 server_id=201 5 log-slave-updates 6 #所有事务提交必须写入硬盘 7 innodb_flush_log_at_trx_commit=1 8 #必须同步bin日志 9 sync_binlog=1 10 binlog_format=mixed 11 max_connections=1000 12 relay-log=master-relay-bin 13 master-info-repository=table 14 relay-log-info-repository=table 15 relay-log-recovery=1
6、slave设置
6.1、停止mysql服务
service mysql stop
6.2、vi /usr/my.cnf
1 # log_bin,slave节点也需要开启bin日志 2 log_bin=slave-bin.log 3 # server_id = .....必须设置server_id,保证集群内的唯一性.可以用ip地址最后3位 4 server_id=202 5 #保证slave节点也能同步刷新master发送bin日志. 6 log-slave-updates 7 binlog_format=mixed 8 max_connections=1000 9 relay-log=slave-relay-bin 10 master-info-repository=table 11 relay-log-info-repository=table 12 relay-log-recovery=1
7、master节点创建复制权限用户
mysql>GRANT REPLICATION SLAVE,reload,super ON *.* TO repl_user@hadoop002 IDENTIFIED BY ‘repl_password‘;
mysql>flush PRIVILEGES;
8、全库备份
8.1、master节点执行全量备份
8.1.1、先设置全局表锁
mysql>FLUSH TABLES WITH READ LOCK;
8.1.2、记录当前日志与位置
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master-bin.000001 | 425 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
8.1.3、执行备份命令
[root@hadoop001 ~]# mysqldump -uroot -pmysql123 test > test.sql
8.1.4、执行命令释放锁
mysql>UNLOCK TABLES;
##退出mysqlclient端之后才能真正释放锁
mysql>exit
8.1.5、把备份脚本传递到slave节点
[root@hadoop001 ~]#scp test.sql root@hadoop002:/root/test.sql
8.2、slave节点执行恢复全库
[root@hadoop002 ~]#mysql -uroot -pmysql123 -D test < /root/test.sql
8.3、slave节点创建replication连接
mysql>CHANGE MASTER TO MASTER_HOST=‘133.72.24.201‘,MASTER_USER=‘repl_user‘,MASTER_PASSWORD=‘repl_password‘,MASTER_LOG_FILE=‘master-bin.000001‘,MASTER_LOG_POS= 425;
mysql>start slave;
9、检测replication状态
9.1、master节点检测从节点
mysql> show slave hosts;
+-----------+------+------+-----------+--------------------------------------+
| Server_id | Host | Port | Master_id | Slave_UUID |
+-----------+------+------+-----------+--------------------------------------+
| 202 | | 3306 | 201 | aa5ba5ed-c5ff-11e4-934f-000c29dbb4c6 |
+-----------+------+------+-----------+--------------------------------------+
1 row in set (0.00 sec)
9.2、slave节点检测replication状态
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 133.72.24.201
Master_User: repl_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000001
Read_Master_Log_Pos: 1426
Relay_Log_File: slave-relay-bin.000002
Relay_Log_Pos: 1285
Relay_Master_Log_File: master-bin.000001
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: 1426
Relay_Log_Space: 1458
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: 201
Master_UUID: 3ff67e00-c3d0-11e4-850f-000c29c0a8e2
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)
10、验证
10.1、检测数据是否同步
从master建表并插入数据,然后查看slave节点是否同步.
10.2、检测binlog是否同步
查看master进行更新是,slave的binlog是否也在同步更新.
mysqlbinlog命令可以查看二进制文件.
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