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kismiss's avatar
kismiss
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Sep 19, 2023

Failed to connect via GTM/LTM

Hi All, We have vertical kubernetes cluster and put F5 (GTM/LTM) in front of the cluster. Service to service call will be go to GTM/LTM before go to micro service (workload/pod): service A -> GTM/L...
application delivery
GTM LTM
kismiss's avatar
kismiss
Icon for Altostratus rankAltostratus
Sep 20, 2023

Dear PSFletchTheTek Amr_Ali Paulius Thanks for your quick response,

Sorry, I need to clarify that this connection problem happened intermittently. Connection from service A to service B actually has already established and many of them has connected successfully. However, there are some failed connection founded in the service log which is what I meant in the previous question. Therefore, I want to ask how to log/trace from F5.

 

Thanks

 

 

  • Amr_Ali's avatar
    Amr_Ali
    Icon for MVP rankMVP
    Sep 20, 2023

    kismiss which type of virtual server that you configure to make service A reach to service B ,

    and you can use this command to check the connection between A and B

     tcpdump -envi 0.0:nnnp -s0 host < ip of service a or ip of service B >

    or you can run this command to tack the packet capture file

    tcpdump -envi 0.0:nnnp -s0 -w /var/tmp/filename.pcap host < ip of service a or IP of service B > and thin use Winscp program to connect on LTM and check the capture file