Dynamic config options from ENV

[Jonathan Matthews]

On 5 June 2014 17:00, Maximilian Schulz <namxam at gmail.com> wrote:
> Hi everybody,
>
> is it possible to set a nginx config variable from an ENV variable? I tried
> several thing, but none of them worked. The most promising was specifying
> "env MY_VAR;" at the top of the nginx.conf and then using its value via
> "my_option $ENV{"MY_VAR"};". But it didn't work. I always got an error about
> the line not being terminated.
>
> 1. Is it possible to set a config option via ENV varaibles
> 2. If so, does it have any performance implications? (The ENV wont change
> during run time)

You can't do this nicely with nginx. Your best option is to
pre-process the config file each time you reload/etc, interpolating
the envvars so that nginx itself sees static values.