chore(grafana): support ha (#110)

Author: EamonZhang

addons/grafana/10/chart/grafana/templates/configmap-ini.yaml

@@ -13,6 +13,13 @@ metadata:
   {{- end }}
 data:
   grafana.ini: |
+    [unified_alerting]
+      enabled = true
+      ha_listen_address = "${POD_IP}:9094"
+      ha_peers = "{{ include "common.names.fullname" . }}:9094"
+      ha_advertise_address = "${POD_IP}:9094"
+      ha_peer_timeout = 15s
+      ha_reconnect_timeout = 2m
     [database]
       type = postgres
       url = {{ .Values.pg_url | quote }}

addons/grafana/10/chart/grafana/templates/deployment.yaml

@@ -128,6 +128,10 @@ spec:
                 name: {{ include "common.tplvalues.render" (dict "value" .Values.grafana.extraEnvVarsSecret "context" $) }}
             {{- end }}
           env:
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
             - name: GF_SECURITY_ADMIN_PASSWORD
               valueFrom:
                 secretKeyRef:
@@ -217,6 +221,12 @@ spec:
             - name: dashboard
               containerPort: {{ .Values.grafana.containerPorts.grafana }}
               protocol: TCP
+            - name: gossip-tcp
+              containerPort: {{ .Values.grafana.containerPorts.gossipTCP }}
+              protocol: TCP
+            - name: gossip-udp
+              containerPort: {{ .Values.grafana.containerPorts.gossipUDP }}
+              protocol: UDP
           {{- if .Values.grafana.customLivenessProbe }}
           livenessProbe: {{- include "common.tplvalues.render" (dict "value" .Values.grafana.customLivenessProbe "context" $) | nindent 12 }}
           {{- else if .Values.grafana.livenessProbe.enabled }}

addons/grafana/10/chart/grafana/templates/service.yaml

@@ -45,6 +45,14 @@ spec:
       targetPort: dashboard
       protocol: TCP
       name: http
+    - port: {{ .Values.service.ports.gossipTCP }}
+      targetPort: gossip-tcp
+      protocol: TCP
+      name: gossip-tcp
+    - port: {{ .Values.service.ports.gossipUDP }}
+      targetPort: gossip-udp
+      protocol:  UDP
+      name: gossip-udp
       {{- if and (or (eq .Values.service.type "NodePort") (eq .Values.service.type "LoadBalancer")) (not (empty .Values.service.nodePorts.grafana)) }}
       nodePort: {{ .Values.service.nodePorts.grafana }}
       {{- else if eq .Values.service.type "ClusterIP" }}

addons/grafana/10/chart/grafana/values.yaml

@@ -318,6 +318,8 @@ grafana:
   ##
   containerPorts:
     grafana: 3000
+    gossipTCP: 9094
+    gossipUDP: 9094
   ## Node affinity preset
   ## Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#node-affinity
   ## @param grafana.nodeAffinityPreset.type Node affinity preset type. Ignored if `affinity` is set. Allowed values: `soft` or `hard`
@@ -586,6 +588,8 @@ service:
   ##
   ports:
     grafana: 3000
+    gossipTCP: 9094
+    gossipUDP: 9094
   ## @param service.nodePorts.grafana Specify the nodePort value for the LoadBalancer and NodePort service types
   ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
   ##
@@ -733,7 +737,7 @@ ingress:
 metrics:
   ## @param metrics.enabled Enable the export of Prometheus metrics
   ##
-  enabled: false
+  enabled: true
   ## Prometheus Operator ServiceMonitor configuration
   ## @param metrics.service.annotations [object] Annotations for Prometheus metrics service
   ##

addons/grafana/10/meta.yaml

@@ -13,7 +13,7 @@ tags: grafana
 bindable: true
 instances_retrievable: true
 bindings_retrievable: true
-plan_updateable: false
+plan_updateable: true
 allow_parameters:
 - name: "networkPolicy.allowNamespaces"
   required: false