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BrianG_11931's avatar
BrianG_11931
Icon for Nimbostratus rankNimbostratus
Mar 19, 2014

HTTP Health Monitor Issue

Hello, I tried creating a Health Monitor to test server-specific content returned from a web server query, but it's currently not working and my servers are in an "Offline (Enabled)" state. From a ...
application delivery
availability
AWS
cloud
ihealth
LTM
management
  • Cory_50405's avatar
    Cory_50405
    Mar 19, 2014

    That tcpdump command I listed above should have created a capture file in/var/tmp. You can SCP the file down to your workstation and open it in Wireshark. Let it run for about 30 seconds and then press Ctrl-c to stop the capture.

     

Cory_50405's avatar
Cory_50405
Icon for Noctilucent rankNoctilucent
Mar 19, 2014

I'd recommend doing a tcpdump on the LTM to analyze the HTTP traffic and see what may be happening. Capture it to a file for viewing in Wireshark:

 

tcpdump -nni 0.0 host 172.24.48.9 -s0 -w /var/tmp/httpmonitor.pcap

 

Verify that the host is responding as expected (with a 200) to the GET request.

 

  • BrianG_11931's avatar
    BrianG_11931
    Icon for Nimbostratus rankNimbostratus
    Mar 19, 2014
    Can you elaborate on how I use the tcpdump command? I've never used it before and after running it, it was just sitting there and then I lost my Wi-Fi connection to the terminal session and I don't know if the command is still running or not and if I need to do anything else? Thanks