这里详细介绍一下各个参数意思：
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: #mysql 从库io状··
Master_Host: 192.168.0.116 #mysql 主节··
Master_User: wordpress_slave #从库使用用户
Master_Port: 3306 #主库的端··
Connect_Retry: 60 #连接超时重试间隔
Master_Log_File: mysql-bin.012602 #同步主库的binlog日志
Read_Master_Log_Pos: 19091467 #主库读取到的pos
Relay_Log_File: web-node1-relay-bin.000358 #读取的延时日志文··
Relay_Log_Pos: 114046814 #从库执行到延时日志pos
Relay_Master_Log_File: mysql-bin.012598 #从库执行到延时日志所在的binlog文件
Slave_IO_Running: No #从库的IO进程
Slave_SQL_Running: No #从库的sql执行进程
Replicate_Do_DB: #同步的数据库
Replicate_Ignore_DB: #忽略同步的数据库
Replicate_Do_Table: #同步的表
Replicate_Ignore_Table: #忽略同步的表
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error: 0
Exec_Master_Log_Pos: 114046644
Relay_Log_Space: 1092700446
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 1594
Last_SQL_Error: 0
Replicate_Ignore_Server_Ids:
Master_Server_Id: 633306
Master_UUID: 629ea5e6-93f4-11e4-8cfa-b82a72dd31d0
Master_Info_File: /usr/local/mysql-5.6.21-linux-glibc2.5-x86_64/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp: 160229 21:18:27
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 619ea5e6-93f4-11e4-8cfa-b82a72dd31d0:2271219917-2291736581:2291736708-2292305169
Executed_Gtid_Set: 619ea5e6-93f4-11e4-8cfa-b82a72dd31d0:2271219917-2291736582
Auto_Position: 0
1 row in set (0.00 sec)