custom http monitor

Does the pool member respond with a 200 to a normal monitor request? Does it respond with a 200 when it sends the service unavailable message? The service unavailable message is typically sent with a 503 status code. If your app uses a 200 response for service unavailable, you could configure one monitor that makes a request and looks for "200 OK" in the response and a second "reverse" monitor which marks the pool member up if the response does not contain "service unavailable":

 

 

 
 monitor reverse_monitor { 
    defaults from http 
    reverse 
    recv "service unavailable" 
    send "GET /monitor_page.html HTTP/1.1\r\nHost: \r\nConnection: Close\r\n" 
 } 
 monitor reverse_monitor { 
    defaults from http 
    recv "200 OK" 
    send "GET /monitor_page.html HTTP/1.1\r\nHost: \r\nConnection: Close\r\n" 
 } 
 

 

 

If the app responds with a 503 status for service unavailable you can just use a single monitor which sends a monitor request and expects a 200 OK response back in order to mark the pool member up.

 

 

Aaron

 

Aaron