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EK1113_231252's avatar
EK1113_231252
Icon for Nimbostratus rankNimbostratus
Nov 07, 2017

About HTTP monitor

Hello All,   I use the Get method in the health check.   However, the health monitor was green when the server was down. Has a similar event occurred?   Parameters: GET /lbchk/apchk.asp （Oth...
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Jinshu's avatar
Jinshu
Icon for Cirrus rankCirrus
Nov 08, 2017

Hello,

 

Depends on what 's your receive string configured.

 

If you kept it as blank, F5 will mark server up unless thers's a time out. This means the application is down and giving you 404 or 500 error, still your pools will be active.

 

You can change the recieve string to 200 OK so that F5 will mark pool member offline if the response is no 200 OK.

 

Also check the status of your health monitor running curl from F5 if server is down and make sure that there are no surprises.

 

curl -v http://yourserverip.com/lbchk/apchk.asp

 

Hope this helps.

 

-Jinshu