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Mayurtester's avatar
Mayurtester
Icon for Altostratus rankAltostratus
Jul 25, 2019

HTTP: retry technical questions

Hello, I am reading the wiki article for HTTP: retry where I have few questions on "Re-sends a request to a server. Can be either the same or a different request, to the same or a different server."...
application delivery
BIG-IP
devops
iRules
Mayurtester's avatar
Mayurtester
Icon for Altostratus rankAltostratus
Jul 25, 2019

 

Thank you for your reply and providing the insights. Please address my follow up question.

  • "if you want to interfere with the pool member selection you will need to code it in the iRules" So May I know if the service will be skipped (removed from the pool) if it is sending the 5xx error
  • I want to know what will happen to the service which has sent the 5xx error, will that remains in the server pool or will it be removed from the pool for some interval so that next request should not select this service. I am referring to LB:FAILED event (https://devcentral.f5.com/s/feed/0D51T00006i7ZpISAU)

 

Yoann_Le_Corvi1's avatar
Yoann_Le_Corvi1
Icon for Cumulonimbus rankCumulonimbus
Jul 25, 2019

Hi

 

That will depend of your monitor. If your monitor requires a 200 response status to be up, then the pool member sending a 500 should be marked down, and not be selected again in the load balancing decision.

 

Sincerely