.. ts:cv:: CONFIG proxy.config.http.down_server.cache_time INT 60
:reloadable:
:overridable:

Specifies how long (in seconds) Traffic Server remembers that an origin
server was unreachable.

.. ts:cv:: CONFIG proxy.config.http.down_server.abort_threshold INT 10
:reloadable:
:overridable:

The number of seconds before Traffic Server marks an origin server as
unavailable after a client abandons a request
because the origin server was too slow in sending the response header.


So with default values, if ATS doesn't get a response from the origin
within 10 seconds, it will not send any request to that origin for the next
60 seconds.
This is triggered when the connection errors or times out more than 10
seconds after the first attempt to connect to the origin.
Does that answer your question?



On Sat, Apr 20, 2019 at 5:59 PM Steve Malenfant <smalenf...@gmail.com>
wrote:

> Hello,
>
> I've been looking through the code although I can't find what's triggering
> an Origin Down.
>
> Specifically, I'd like to know what causes the this to be triggered:
>
> proxy.config.http.down_server.abort_threshold
> proxy.config.http.down_server.cache_time
>
> What are the error status codes or conditions triggering a "down server".
>
> Thanks,
>
> Steve
>

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