nixos/alertmanager: provide example of envsubst usage

2020-01-24 18:07:24 +01:00
parent 23d5d9bbe9
commit ed6e4a936c
1 changed files with 4 additions and 2 deletions
--- a/nixos/modules/services/monitoring/prometheus/alertmanager.nix
+++ b/nixos/modules/services/monitoring/prometheus/alertmanager.nix
@@ -133,8 +133,10 @@ in {
        default = null;
        example = "/root/alertmanager.env";
        description = ''
-          File to load as environment file. Useful to insert secrets
-          into the configuration (via envsubst).
+          File to load as environment file. Environment variables
+          from this file will be interpolated into the config file
+          using envsubst with this syntax:
+          <literal>$ENVIRONMENT ''${VARIABLE}</literal>
        '';
      };
    };