High Availability Guide : Watchdog sample : Failure situations and Watchdog actions
  
Failure situations and Watchdog actions
This section describes how a typical watchdog program should work in specific failure scenarios that are commonly encountered.
The scenarios are in the context of either a server failure or a broken communication link between the Primary and Secondary server, or between one of the servers and the watchdog.
Although these commands may be issued by either a human administrator or a software program, for simplicity it is assumed that the commands are issued by the Watchdog sample.
See also
Primary is down
Secondary is down
Watchdog is down
Communication link between Primary and Secondary is down
Communication link between the Watchdog and Primary is down
Communication link between the Watchdog and Secondary is down
Communication links between the Watchdog and Primary, and between the Primary and Secondary, are down Scenario
Communication links between the Watchdog and Secondary, and between the Primary and Secondary, are down
Watchdog sample