MySQL高可用群集
mysql> grant replication slave on *.* to 'replication'@'192.168.32.%'>Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> change master to master_host='192.168.32.151',master_user='replication',master_password='123456',master_log__file='mysql_bin.000004',master_log_pos=154;Query OK, 0 rows affected, 2 warnings (0.02 sec)
#开启同步功能
mysql> start slave;
Query OK, 0 rows affected (0.03 sec)
#查看IO线程和SQL线程是否都已经开启是否显示为yes
mysql>show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.32.151
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000005
Read_Master_Log_Pos: 154
Relay_Log_File: localhost-relay-bin.000011
Relay_Log_Pos: 367
Relay_Master_Log_File: mysql-bin.000005
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: 154
Relay_Log_Space: 625
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
Master_UUID: 111eb6e9-78dd-11e8-9337-000c2940c252
Master_Info_File: /usr/local/mysql/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all> 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
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
如果只开启了SQL线程而IO线程没有开启
那么检查防火墙有无关闭 增强性安全模块有没有关闭
再执行下列语句
mysql>stop slave; #先停止slave
mysql>reset slave; #刷新slave同步功能
mysql>start slave; #最后再开启然后查看
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