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Femi_132696's avatar
Femi_132696
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Jul 30, 2015

Debugging Health Monitor - Node being randomly marked down and then up.

Hi,   I have a strange situation where 2 nodes in a pool are being randomly marked down and then up. But the server logs show no evidence that there were any errors.   The monitor URL always re...
Femi_132696's avatar
Femi_132696
Icon for Nimbostratus rankNimbostratus
Aug 07, 2015

Thanks Kevin,

 

I am tailing the access log files for the server, I could see request from the monitor returning a 200 response. But every so often, there was a http 0 status.

 

I also noted that the monitor requests are using HTTP/0.9. I will update it to HTTP/1.1 after seeing the document below.

 

https://support.f5.com/kb/en-us/solutions/public/3000/200/sol3224.htmlhttp : suggests that When an HTTP 0.9 request is sent to an HTTP 1.1 server, the server may not respond as expected.

 

Hopefully that will help.