Forum Discussion

Thiyagu_163984's avatar
Thiyagu_163984
Icon for Nimbostratus rankNimbostratus
Jul 16, 2014

Virtual is unable to access using the health check URL configured on the backend server

Hello All, We have recently migrated our applications to F5 from ACE. I need your expertise help to troubleshoot application access issue.

 

Issue: Webpage is not getting loaded if we try access the URL using the virtual server IP followed by the health URL configured at the back end server. Example: www.yyy.com/index.html

 

We are able to able to ping the url and we are able to do telnet on port 80 but if we try to access through the browser the page is not getting loaded.

 

Any help on troubleshooting this issue is accessible.

 

Regards, Thiyagu

 

APM
application delivery
deployment
design
LTM
security

2 Replies

Sort By
  • Kevin_Stewart's avatar
    Kevin_Stewart
    Icon for Employee rankEmployee
    Jul 16, 2014

    There are a number of reasons why this could be happening, but to know for sure you have to do a client side capture via some tool like HTTPWatch, Fiddler, etc. You may find with the capture that you're accessing the application VIP, but that some part of the response is missing or that the client is getting silently redirected to a URL that the client cannot access.

     

  • The_Bhattman's avatar
    The_Bhattman
    Icon for Nimbostratus rankNimbostratus
    Jul 16, 2014

    Hi Thiyagu,

     

    Pinging the URL and doing a telnet on the port only tells you that you have a route and the VS is listening on the VS.

     

    Did you make sure the address and port translation are turned on on the VS? Is the webserver gateway pointing to the F5 load balancer?

     

    -=Bhattman=-