hosts/monitoring-3: split host config to multiple files

hosts/monitoring-3/alertmanager.nix

@@ -0,0 +1,70 @@
+{ ... }:
+{
+  services.prometheus.xmpp-alerts = {
+    enable = true;
+    settings = {
+      jid = "feuer@fem-net.de";
+      password_command = "cat /var/src/secrets/xmpp-alert/password";
+      listen_address = "::1";
+      listen_port = 9199;
+      to_jid = "clerie@fem-net.de";
+      format = "short";
+    };
+  };
+
+  services.prometheus.alertmanager = {
+    enable = true;
+    listenAddress = "[::1]";
+    port = 9093;
+    configuration = {
+      route = {
+        receiver = "xmpp-receiver";
+        repeat_interval = "4h";
+        group_by = [ "instance" ];
+        routes = [
+          {
+            matchers = [
+              ''severity = "muted"''
+            ];
+            receiver = "muted";
+          }
+          {
+            receiver = "xmpp-receiver";
+            matchers = [
+              ''severity = "warning"''
+            ];
+            repeat_interval = "70h";
+          }
+        ];
+      };
+      receivers = [
+        {
+          name = "muted";
+        }
+        {
+          name = "xmpp-receiver";
+          webhook_configs = [
+            {
+              url = "http://[::1]:9199/alert";
+            }
+          ];
+        }
+      ];
+      inhibit_rules = [
+        {
+          # Mute all alerts for an instance which also has an alert starting with MuteInstanceOn
+          target_matchers = [
+            ''alertname =~ ".+"''
+          ];
+          source_matchers = [
+            ''mute = "instance"''
+          ];
+          equal = [
+            "instance"
+          ];
+        }
+      ];
+    };
+  };
+
+}