chore(prometheus): enable etcd prometheus service monitor

prometheus/values.yaml

@@ -157,6 +157,8 @@ prometheus:
       enabled: true
       prefix: prometheus
   prometheusSpec:
+    secrets:
+      - etcd-client-cert
     remoteWrite:
       - url: http://receiver-write.thanos.svc.cluster.local:10908/api/v1/receive
         name: thanos
@@ -193,3 +195,20 @@ customRules:
 crds:
   upgradeJob:
     enabled: true
+kubeEtcd:
+  enabled: true
+  endpoints:
+    - 78.47.196.191 # master1
+    - 116.202.28.33 # master2
+    - 162.55.35.186 # master3
+  service:
+    enabled: true
+    port: 2379
+    targetPort: 2381
+  serviceMonitor:
+    enabled: true
+    scheme: https
+    caFile: /etc/prometheus/secrets/etcd-client-cert/etcd-ca
+    certFile: /etc/prometheus/secrets/etcd-client-cert/etcd-client
+    keyFile: /etc/prometheus/secrets/etcd-client-cert/etcd-client-key
+    insecureSkipVerify: true