mysql主从复制
说明：
master:192.168.124.101
slave:192.168.124.102
slave上pd数据库从master上同步。
一、master开启二进制日志文件：
vi /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-bin=mysql-bin binlog-do-db=pd server-id=1 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid
#service mysqld restart #service iptables stop |
二、master上创建同步账号：
mysql> create user 'slave_cp'@'192.168.124.102' IDENTIFIED BY 'salve_cp_123'; Query OK, 0 rows affected (0.01 sec)
mysql> GRANT REPLICATION SLAVE ON *.* TO 'slave_cp'@'192.168.124.102' ; Query OK, 0 rows affected (0.00 sec)
mysql>flush privileges; Query OK, 0 rows affected (0.00 sec)
mysql> show master status; +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000004 | 446 | pd | | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec)
mysql>\q
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三、设置从服务器上server-id
vi /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 server-id=2 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid #service mysqld restart #service iptables stop
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四、slave上开启主从连接并验证
mysql> stop slave; Query OK, 0 rows affected (0.00 sec)
mysql> CHANGE MASTER TO MASTER_HOST='192.168.124.101',MASTER_USER='slave_cp',MASTER_PASSWORD='salve_cp_123',MASTER_LOG_FILE='mysql-bin.000004',MASTER_LOG_POS=446; Query OK, 0 rows affected (0.26 sec)
mysql> start slave; Query OK, 0 rows affected (0.00 sec)
mysql> show slave status \G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.124.101 Master_User: slave_cp Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000004 Read_Master_Log_Pos: 446 Relay_Log_File: mysqld-relay-bin.000002 Relay_Log_Pos: 251 Relay_Master_Log_File: mysql-bin.000004 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: 446 Relay_Log_Space: 407 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: 1 row in set (0.00 sec)
ERROR: No query specified mysql>\q |
说明：
锁表 | FLUSH TABLES WITH READ LOCK; |
解锁 | UNLOCK TABLES; |