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From Josh Gitlin <jgit...@pinnacle21.com>
Subject Re: Remap causing parent servers to not have a match
Date Thu, 07 May 2020 19:05:23 GMT
The more I dig into this, the more I realize I have gone horribly wrong somewhere, as I seem
to have just created an infinite parent proxy loop. So I may need to RTFM again to fix this
broken design! :)

Josh Gitlin
Principal DevOps Engineer
jgitlin@pinnacle21.com<mailto:jgitlin@pinnacle21.com>

PINNACLE 21
www.pinnacle21.com

On May 7, 2020, at 1:51 PM, Josh Gitlin <jgitlin@pinnacle21.com<mailto:jgitlin@pinnacle21.com>>
wrote:

Hello,

Apologies if this was covered in the docs or a previous message; I couldn't find an answer
in my search.

I am having an issue with remapping and parent caching. I have two Apache Traffic Server instances
for HA, and each one has the other configured as its parent cache. The goal being a shared
cache, because the two instances are behind a load balancer with leastconn distribution.

I am seeing an issue where cache misses on server B get forwarded to server A with the remapped
URL and server A refuses to serve because it does not recognize the URL in it's remap config.
(Error "ERR_INVALID_URL") I know I can resolve this by simply adding the original URL to the
remap config, but that felt like the wrong fix.

Contents of remap.config now:

map http://www.proxy.example.com<http://www.proxy.example.com/> http://www.example.com/
map https://www.proxy.example.com<https://www.proxy.example.com/> https://www.example.com/


Proposed fix to my config:

map http://www.proxy.example.com<http://www.proxy.example.com/> http://www.example.com/
map https://www.proxy.example.com<https://www.proxy.example.com/> https://www.example.com/
map http://www.example.com<http://www.example.com/> http://www.example.com/
map https://www.example.com<https://www.example.com/> https://www.example.com/

Is this the "right" way to fix this issue? The duplication feels like there must be a better
way...

Josh Gitlin
Principal DevOps Engineer
jgitlin@pinnacle21.com<mailto:jgitlin@pinnacle21.com>

PINNACLE 21
www.pinnacle21.com<http://www.pinnacle21.com>



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