add promtail log shipping

nixos/components/monitor/default.nix

@@ -14,6 +14,7 @@ with types;
     ./netdata.nix
     ./opentelemetry.nix
     ./prometheus.nix
+    ./promtail.nix
     ./telegraf.nix
   ];
 

nixos/components/monitor/opentelemetry.nix

@@ -62,9 +62,9 @@ in
           pipelines.metrics = {
             exporters = [ "otlp" ];
           };
-          #pipelines.logs = {
+          pipelines.logs = {
-          #  exporters = [ "otlp" ];
+            exporters = [ "otlp" ];
-          #};
+          };
         };
       };
     })
@@ -77,9 +77,9 @@ in
           pipelines.metrics = {
             receivers = [ "otlp" ];
           };
-          #pipelines.logs = {
+          pipelines.logs = {
-          #  exporters = [ "otlp" ];
+            receivers = [ "otlp" ];
-          #};
+          };
         };
       };
     })

nixos/components/monitor/promtail.nix

@@ -0,0 +1,67 @@
+{ config, lib, ... }:
+with lib;
+with types;
+let
+  cfg = config.components.monitor.promtail;
+in
+{
+  options.components.monitor.promtail = {
+    enable = mkOption {
+      type = lib.types.bool;
+      default = config.components.monitor.enable;
+    };
+    port = mkOption {
+      type = int;
+      default = 3500;
+      description = "port to provide promtail export";
+    };
+  };
+
+  config = mkMerge [
+
+    (mkIf config.components.monitor.promtail.enable {
+
+      services.opentelemetry-collector.settings = {
+        receivers.loki = {
+          protocols.http.endpoint = "127.0.0.1:${toString cfg.port}";
+          use_incoming_timestamp = true;
+        };
+        service.pipelines.logs.receivers = [ "loki" ];
+      };
+
+      services.promtail = {
+        enable = true;
+        configuration = {
+          server = {
+            http_listen_port = 28183;
+            grpc_listen_port = 0;
+          };
+
+          positions.filename = "/tmp/positions.yaml";
+          clients = [
+            { url = "http://127.0.0.1:${toString cfg.port}/loki/api/v1/push"; }
+          ];
+
+          scrape_configs = [
+            {
+              job_name = "journal";
+              journal = {
+                max_age = "12h";
+              };
+              relabel_configs = [
+                {
+                  source_labels = [ "__journal__systemd_unit" ];
+                  target_label = "unit";
+                }
+                {
+                  source_labels = [ "__journal__transport" ];
+                  target_label = "transport";
+                }
+              ];
+            }
+          ];
+        };
+      };
+    })
+  ];
+}

nixos/machines/chungus/cache.nix

@@ -1,7 +1,8 @@
 { ... }:
 {
+  # port 5000 already in use.
   services.nix-serve = {
-    enable = true;
+    enable = false;
 
     # needed if i want to trust my own build packages and dirivations
     # nix-store --generate-binary-cache-key key-name secret-key-file public-key-file

nixos/machines/chungus/configuration.nix

@@ -35,14 +35,14 @@
     ./media-syncthing.nix
 
     # logging
-    ./loki.nix
-    ./loki-promtail.nix
     ./grafana.nix
 
     ./telemetry/telegraf-smart.nix
     ./telemetry/telegraf.nix
     #./telemetry/opentelemetry-hass.nix
     ./telemetry/prometheus.nix
+    ./telemetry/loki.nix
+    #./telemetry/promtail.nix
 
     #./home-display.nix
 

nixos/machines/chungus/telemetry/loki.nix

@@ -1,6 +1,14 @@
 { config, pkgs, ... }:
 {
 
+
+  services.opentelemetry-collector.settings = {
+    exporters.loki = {
+      endpoint = "http://127.0.0.1:3100/loki/api/v1/push";
+    };
+    service.pipelines.logs.exporters = [ "loki" ];
+  };
+
   services.loki = {
     enable = true;
     configuration = {

nixos/machines/chungus/telemetry/promtail.nix

@@ -1,5 +1,14 @@
 { config, ... }:
 {
+
+  services.opentelemetry-collector.settings = {
+    receivers.loki = {
+      protocols.http.endpoint = "127.0.0.1:3500";
+      use_incoming_timestamp = true;
+    };
+    service.pipelines.logs.receivers = [ "loki" ];
+  };
+
   services.promtail = {
     enable = true;
     configuration = {
@@ -7,9 +16,10 @@
         http_listen_port = 28183;
         grpc_listen_port = 0;
       };
+
       positions.filename = "/tmp/positions.yaml";
       clients = [
-        { url = "http://127.0.0.1:3100/loki/api/v1/push"; }
+        { url = "http://127.0.0.1:3500/loki/api/v1/push"; }
       ];
 
       scrape_configs = [
@@ -17,10 +27,10 @@
           job_name = "journal";
           journal = {
             max_age = "12h";
-            labels = {
+            #labels = {
-              job = "systemd-journal";
+            #  job = "systemd-journal";
-              host = config.networking.hostName;
+            #  host = config.networking.hostName;
-            };
+            #};
           };
           relabel_configs = [
             {
@@ -34,8 +44,6 @@
           ];
         }
       ];
-
     };
-
   };
 }