I'd like my conf file to handle a configurable resolver. I attempted to do this with an environment variable passed in at runtime via -e, then using set_by_lua to retrieve the value and eventually use in the resolver directive. I am using other environment variables for other purposes so I am confident I have the right syntax for defining and retrieving the variables.

I can hardcode an IP with the resolver directive and it works ok.

But when I try something like
resolver $resolver_value;
I get an error saying "host not found in resolver $resolver_value"

Am I trying to do something that's an unsupported use case?

This question is better placed here:
https://groups.google.com/forum/#!forum/openresty-en

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nginx for Windows http://nginx-win.ecsds.eu/

Thank you! Have posted to openresty-en at https://groups.google.com/forum/#!topic/openresty-en/wU0wAvoSklM