services: nginx: Use a fixed location for the nginx configuration file.

The motivation is twofold:

 1. We can ensure the presence of the nginx default configuration fragments in
    the configuration file directory;
 2. 'herd reload nginx' can now be used to reload an updated configuration
    file.

Before this change, 'include fastcgi_params;', for example, would fail with
error:

  nginx: [emerg] open() "/gnu/store/fastcgi_params" failed
  (2: No such file or directory) in /gnu/store/...-nginx.conf:50

* gnu/services/web.scm (%nginx-configuration-file): New variable.
(nginx-activation): Delay configuration file check to...
(nginx-shepherd-service): ... a new one-shot 'nginx-init' service.  Adjust to
use the %nginx-configuration-file variable for the configuration file.
<actions>: Add a new 'configuration' action.
(nginx-conf-files, nginx-etc-directory): New procedures.
(nginx-service-type): Extend etc-service-type with nginx-service-type.
* gnu/tests/web.scm (%nginx-servers): Add an include directive to test config
to ensure it now works.

Merges: !8811
Change-Id: I26882ab01288ec4dd374e9f282e95ffa33dfa3cc

0 files changed, 0 insertions, 0 deletions