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F5 health check logs no response or bad response

cathy_123
Cirrus
Cirrus

Hello Guys,

 

Would like to ask regarding the health check. so we have client wanted to know if our node wasnt able to reply or it did reply but a bad response. so this is the logs

 

sample: 01070638:5: Pool /Common/ member /Common/server_name:443 monitor status down. [ /Common/: down; last error: /Common/: Unable to connect; No successful responses received before deadline. @2016/12/01 09:58:35. ] [ was up for 22hrs:39mins:24sec ]

 

Thanks!

 

1 REPLY 1

Kai_Wilke
MVP
MVP

Hi Cathy,

if the problem persists, you may check the connectivity of the individual nodes via

curl
.

 curl -vk https://172.217.168.227/ 

... combine the

curl
command with
rdexec $rd_id
if the the backend system is only reachable via a given route domain.

 rdexec 1 curl -vk https://172.217.168.227/ 

... if you need to perform a forensic analysis for your given case. Then "Unable to connect - for whatever reason" is all you can say to your client.

You would need to enable "Monitor Logging" for the LTM monitors to get much more detailed information. But keep in mind that "Monitor Logging" have to become enabled on each LTM cluster unit seperately and must be re-enabled after each reboot of your units...

K12531: Troubleshooting health monitors

https://support.f5.com/csp/article/K12531

Cheers, Kai


iRule can do… 😉