add wpa config (#21641)

Signed-off-by: Ahmed Mezghani <ahmed.mezghani@outlook.com>

stable/datadog/CHANGELOG.md

@@ -1,5 +1,9 @@
 # Datadog changelog
 
+## 2.1.1
+
+* Add option to enable WPA in the Cluster Agent.
+
 ## 2.1.0
 
 * Changed the default for `processAgent.enabled` to `true`.

stable/datadog/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: datadog
-version: 2.1.0
+version: 2.1.1
 appVersion: "7"
 description: Datadog Agent
 keywords:

stable/datadog/ci/cluster-agent-wpa.yaml

@@ -0,0 +1,11 @@
+datadog:
+  apiKey: "00000000000000000000000000000000"
+  appKey: "0000000000000000000000000000000000000000"
+
+clusterAgent:
+  enabled: true
+
+  metricsProvider:
+    enabled: true
+
+    wpaController: true

stable/datadog/templates/agent-rbac.yaml

@@ -71,6 +71,16 @@ rules:
   - "/healthz"
   verbs:
   - get
+{{- if and .Values.clusterAgent.metricsProvider.enabled .Values.clusterAgent.metricsProvider.wpaController }}
+- apiGroups:
+  - "datadoghq.com"
+  resources:
+  - "watermarkpodautoscalers"
+  verbs:
+  - "list"
+  - "get"
+  - "watch"
+{{- end }}
 ---
 apiVersion: {{ template "rbac.apiVersion" . }}
 kind: ClusterRoleBinding

stable/datadog/templates/cluster-agent-deployment.yaml

@@ -95,6 +95,8 @@ spec:
             value: {{ .Values.clusterAgent.metricsProvider.enabled | quote }}
           - name: DD_EXTERNAL_METRICS_PROVIDER_PORT
             value: {{ .Values.clusterAgent.metricsProvider.service.port | quote }}
+          - name: DD_EXTERNAL_METRICS_PROVIDER_WPA_CONTROLLER
+            value: {{ .Values.clusterAgent.metricsProvider.wpaController | quote }}
           {{- end }}
           {{- if .Values.datadog.clusterChecks.enabled }}
           - name: DD_CLUSTER_CHECKS_ENABLED

stable/datadog/values.yaml

@@ -411,6 +411,11 @@ clusterAgent:
   metricsProvider:
     enabled: false
 
+    ## @param wpaController - boolean - optional
+    ## Enable informer and controller of the watermark pod autoscaler
+    #
+    wpaController: false
+
     ## Configuration for the service for the cluster-agent metrics server
     #
     service: