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suryanarayanan_'s avatar
suryanarayanan_
Icon for Nimbostratus rankNimbostratus
Mar 25, 2019

Virtual server status is "Unknown" | URL not loading

A virtual server is configured with service port 80 and there are few servers called under it with a pool created. The status of the virtual server is shown as below.

 

"Unknown (Enabled) - The children pool member(s) either don't have service checking enabled, or service check results are not available yet"

 

Policy is applied in the virtual server with URI redirection. issue here is URL is not accessible now. However i am able to see current connection counts in the backend server statistics

 

Please help here. Is the reason of unknown status is causing the issue ?

 

application delivery
BIG-IP
LTM

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  • RaghavendraSY's avatar
    RaghavendraSY
    Icon for Altostratus rankAltostratus
    Mar 26, 2019

    Unknown enabled means monitors are not assigned to pool. Can you please reverify irule and SNAT settings. If you are ok can you provide your virtual server and irule configurations.

     

  • Sekhar's avatar
    Sekhar
    Icon for Nimbostratus rankNimbostratus
    Mar 26, 2019

    Is it possible for you to paste current virtual server settings and policy settings here?

     

    Thanks

     

  • youssef1's avatar
    youssef1
    Icon for Cumulonimbus rankCumulonimbus
    Mar 27, 2019

    Hi,

    Can you validate the following point:

    • You set an HTTP profile.
    • You set Source Address Translation to "Automap". If F5 is not in inline mode or If F5 is not the default GW of your backend server.
    • If you have multiple backend and your backend is session mode (you authenticate in this server) don't forge to set an persistance profile (Cookie if you enable http profile or source address).

    Last point connect to your F5 in cli mode and try to reach your backend server using curl:

    curl -i -k https://backendIP/myuri -H "Host: myhost.domain.com"

    Regards