Revert "remove etcd monitoring"

This reverts commit fb5cfe4fd1898e362fbf599c48b46118fe0fcc03.

dezendorf/homelab/k3s/monitoring/prometheus.yaml

@@ -43722,6 +43722,36 @@ spec:
   - port: http-metrics
     bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
 ---
+# Source: kube-prometheus-stack/templates/exporters/kube-etcd/servicemonitor.yaml
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: prometheus-kube-prometheus-kube-etcd
+  namespace: monitoring
+  labels:
+    app: kube-prometheus-stack-kube-etcd
+    
+    app.kubernetes.io/managed-by: Helm
+    app.kubernetes.io/instance: prometheus
+    app.kubernetes.io/version: "44.3.0"
+    app.kubernetes.io/part-of: kube-prometheus-stack
+    chart: kube-prometheus-stack-44.3.0
+    release: "prometheus"
+    heritage: "Helm"
+spec:
+  jobLabel: jobLabel
+    
+  selector:
+    matchLabels:
+      app: kube-prometheus-stack-kube-etcd
+      release: "prometheus"
+  namespaceSelector:
+    matchNames:
+      - "kube-system"
+  endpoints:
+  - port: http-metrics
+    bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
+---
 # Source: kube-prometheus-stack/templates/exporters/kube-proxy/servicemonitor.yaml
 apiVersion: monitoring.coreos.com/v1
 kind: ServiceMonitor