MySQL主从状态检查的实现

MySQL> show slave status\G;

MySQL > show processlist\G

mysql> show processlist\G;
 1. row 
省略
 2. row 
   Id: 22
  User: system user
  Host: connecting host
   db: NULL
Command: Connect
  Time: 938775
 State: Waiting for master to send event
  Info: NULL
 3. row 
   Id: 23
  User: system user
  Host: 
   db: NULL
Command: Query
  Time: 748608
 State: Slave has read all relay log; waiting for more updates
  Info: NULL
 4. row 
   Id: 3691
  User: slave
  Host: 1.2.3.3:54244
   db: NULL
Command: Binlog Dump
  Time: 70515
 State: Master has sent all binlog to slave; waiting for more updates
  Info: NULL