1 files changed, 49 insertions, 0 deletions
diff --git a/modules/nixos/traits/promtail.nix b/modules/nixos/traits/promtail.nix
new file mode 100644
index 0000000..5e08b25
--- /dev/null
+++ b/modules/nixos/traits/promtail.nix
@@ -0,0 +1,49 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  cfg = config.traits.promtail;
+  inherit (lib) types;
+in {
+  options.traits.promtail = {
+    enable = lib.mkEnableOption "Promtail";
+
+    clients = lib.mkOption {
+      type = types.listOf types.attrs;
+      default = [{}];
+      description = "clients for promtail";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.promtail = {
+      enable = true;
+      configuration = {
+        inherit (cfg) clients;
+        server.disable = true;
+
+        scrape_configs = [
+          {
+            job_name = "journal";
+
+            journal = {
+              max_age = "12h";
+              labels = {
+                job = "systemd-journal";
+                host = "${config.networking.hostName}";
+              };
+            };
+
+            relabel_configs = [
+              {
+                source_labels = ["__journal__systemd_unit"];
+                target_label = "unit";
+              }
+            ];
+          }
+        ];
+      };
+    };
+  };
+}