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Forum Discussion

Ankitk_265377's avatar
Ankitk_265377
Icon for Nimbostratus rankNimbostratus
Jun 17, 2016

Is there any way to configure health monitor in below scenerio ?

Is there any way to monitor the Applications server through f5 which are not immediate behind the f5 device ?

 

Scenerio :

 

Client ------------> F5--------->Webservers -----------> Application server

 

Client : User machine, f5 : LTM, Webserver : Backend server which configured on f5 with ports, Application server : Not directly connect with F5, directly connect with Webservers

 

So is there way to monitor both Webservers & Applications through f5, if any one goes down completely f5 will come to know & change the status of their VIP ?

 

Thanks Ankit Katyal

 

devops
iRules
LTM

2 Replies

  • tatmotiv's avatar
    tatmotiv
    Icon for Cirrostratus rankCirrostratus
    Jun 17, 2016

    Best way would probably be to monitor some resource on the webserver that indirectly contains the status of the application server, for example (if application is a java server like tomcat) some custom jsp page that checks the availabilty of the tomcat and returns something like "all OK" via the webserver.

     

  • Vijay_E's avatar
    Vijay_E
    Icon for Cirrus rankCirrus
    Jun 21, 2016

    Use something like this for "Send String":

    GET /index.html HTTP/1.1\r\nHost: host.domain.com\r\nConnection: Close\r\n

    "Response String" should be a unique value in the content. If the "Response String" somehow depends on your application performance/uptime, you will end up monitoring the application availability.

    Reference link.