nixos/prometheus-redis-exporter: init

nixos/modules/services/monitoring/prometheus/exporters.nix

@@ -39,6 +39,7 @@ let
     "node"
     "postfix"
     "postgres"
+    "redis"
     "rspamd"
     "snmp"
     "surfboard"

nixos/modules/services/monitoring/prometheus/exporters/redis.nix

@@ -0,0 +1,19 @@
+{ config, lib, pkgs, options }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.exporters.redis;
+in
+{
+  port = 9121;
+  serviceOpts = {
+    serviceConfig = {
+      ExecStart = ''
+        ${pkgs.prometheus-redis-exporter}/bin/redis_exporter \
+          -web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
+          ${concatStringsSep " \\\n  " cfg.extraFlags}
+      '';
+    };
+  };
+}

nixos/tests/prometheus-exporters.nix

@@ -475,6 +475,20 @@ let
       '';
     };
 
+    redis = {
+      exporterConfig = {
+        enable = true;
+      };
+      metricProvider.services.redis.enable = true;
+      exporterTest = ''
+        wait_for_unit("redis.service")
+        wait_for_unit("prometheus-redis-exporter.service")
+        wait_for_open_port(6379)
+        wait_for_open_port(9121)
+        wait_until_succeeds("curl -sSf localhost:9121/metrics | grep -q 'redis_up 1'")
+      '';
+    };
+
     rspamd = {
       exporterConfig = {
         enable = true;