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Nikson_M's avatar
Nikson_M
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Aug 16, 2019

GTM not detecting the service as up.

Folks, We have recently provisioned the GTM module in one of our VE device. We wanted to configure a test environment here. The VE had the valid licenses for the GTM.   However, the server show...
application delivery
BIG-IP DNS
  • DanS92's avatar
    DanS92
    Aug 29, 2019

    You can't just have anything as the Prober Pool Member. It has to be the server for the GTM. Do these steps exactly:

     

    • Create Server for the GTM. So the device that you sent this screenshot from, we'll pretend it's called f5gtm1.com. You'd create a server named f5gtm1. This server will be BIG-IP System (Single). You need to give it an Address, Translation, and Data Center. Leave Virtual Server Discover Disabled.
    • Then create Prober Pool.
DanS92's avatar
DanS92
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This could be due to a large number of reasons... Two of the more common reasons are:

  1. Port TCP 4353 is blocked on a Firewall from the GTM Self IP to the IP of the remote device
  2. Remote device's Device Certificate hasn't been imported on the GTM under DNS > GSLB > Servers > Trusted Server Certificates

 

You should see some error logs in System > Logs > GSLB that will point you in the right direction

Nikson_M's avatar
Nikson_M
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Aug 20, 2019

Thanks Dan!!

 

port TCP 4353, I believe is the iQuery port which we should not be concerned here about. The reason is that all we are doing is adding Generic hosts to this DNS.

 

In System -> Logs --> GSLB we are not able to see any logs.

 

I do feel that there is some basic steps that we have not setup, just not able to understand what else could be needed.