koordlet: Add koordlet servicemonitor with control (#59)

Signed-off-by: Guanglu Guo <guoguanglu@qiyi.com>
Signed-off-by: songtao98 <songtao2603060@gmail.com>
Co-authored-by: Guanglu Guo <guoguanglu@qiyi.com>

versions/v1.1.0/templates/koordlet-service.yaml

@@ -0,0 +1,20 @@
+{{- if .Values.koordlet.enableServiceMonitor }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    koord-app: koordlet
+  name: koordlet-service
+  namespace: {{ .Values.installation.namespace }}
+spec:
+  clusterIP: None
+  ports:
+  # TODO: Support port in values
+  - name: http
+    port: 9316
+    targetPort: 9316
+  selector:
+    koord-app: koordlet
+
+{{- end }}

versions/v1.1.0/templates/koordlet-servicemonitor.yaml

@@ -0,0 +1,27 @@
+{{- if .Values.koordlet.enableServiceMonitor }}
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    koord-app: koordlet
+  name: koordlet-service-monitor
+  namespace: {{ .Values.installation.namespace }}
+spec:
+  endpoints:
+  - interval: 30s
+    port: http
+    relabelings:
+    - action: replace
+      regex: (.*)
+      replacement: $1
+      sourceLabels:
+      - __meta_kubernetes_pod_node_name
+      targetLabel: node
+    scheme: http
+  jobLabel: koord-app
+  selector:
+    matchLabels:
+      koord-app: koordlet
+
+{{- end }}

versions/v1.1.0/values.yaml

@@ -35,6 +35,7 @@ koordlet:
     kubeletLibDir: /var/lib/kubelet/
     koordProxyRegisterDir: /etc/runtime/hookserver.d/
     koordletSockDir: /var/run/koordlet
+  enableServiceMonitor: false
 
 
 manager: