Hello!

On Wed, Apr 14, 2021 at 01:19:08PM -0400, kay wrote:

> Here is an example of the proxy_pass config, we don't use IP's
>
> proxy_pass https://example.com;
>
> When "example.com" changes the IP address, it is not reflected in nginx.
> We're using k8s pods. Sometime one or two pods have stale DNS cache. Other
> pods work fine...

That's exactly how it is expected to work: names in the
configuration are resolved during configuration parsing. If you
want to re-resolve names, you have to reload the configuration.

Alternatively, you can configure proxy_pass using variables. As
documented in http://nginx.org/r/proxy_pass:

: Parameter value can contain variables. In this case, if an
: address is specified as a domain name, the name is searched among
: the described server groups, and, if not found, is determined
: using a resolver.

Hope this helps.

--
Maxim Dounin
http://mdounin.ru/
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