Add air quality external monitor

cluster/apps/monitoring/external-monitors/air-quality.yaml

@@ -0,0 +1,57 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: air-quality-external
+  namespace: monitoring
+  labels:
+    app: air-quality-external
+spec:
+  type: ClusterIP
+  ports:
+  - name: metrics
+    port: 80
+    targetPort: 80
+---
+kind: Endpoints
+apiVersion: v1
+metadata:
+  name: air-quality-external
+  namespace: monitoring
+subsets:
+- addresses:
+  - ip: 192.168.2.1
+  ports:
+  - name: metrics
+    port: 80
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: air-quality-external
+  namespace: monitoring
+  labels:
+    release: kube-prometheus-stack
+spec:
+  selector:
+    matchLabels:
+      app: air-quality-external
+  endpoints:
+  - interval: 60s
+    port: metrics
+
+#kind: Probe
+#apiVersion: monitoring.coreos.com/v1
+#metadata:
+#  name: air-quality-prober
+#  namespace: monitoring
+#  labels:
+#    release: kube-prometheus-stack
+#spec:
+#  jobName: air-quality
+#  interval: 60s
+#  prober:
+#    url: 192.168.2.1:80/metrics
+#  targets:
+#    staticConfig:
+#      static:
+#      - https://www.google.com

cluster/apps/monitoring/external-monitors/kustomization.yaml

@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ./air-quality.yaml

cluster/apps/monitoring/kustomization.yaml

@@ -8,4 +8,5 @@ resources:
 - ./alertmanager-gotify-bridge
 - ./victoria-metrics
 - ./varken
-- ./proxmoxve-exporter
+- ./proxmoxve-exporter
+- ./external-monitors