feat(argo-rollouts): Support HA mode for controller with multiple replicas (#1016)

Signed-off-by: Tung Huynh <31434093+huynhsontung@users.noreply.github.com>

Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

charts/argo-rollouts/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "v1.1.0"
 description: A Helm chart for Argo Rollouts
 name: argo-rollouts
-version: 2.6.0
+version: 2.7.0
 icon: https://argoproj.github.io/argo-rollouts/assets/logo.png
 home: https://github.com/argoproj/argo-helm
 maintainers:
@@ -11,4 +11,4 @@ maintainers:
   - name: jessesuen
 annotations:
   artifacthub.io/changes: |
-    - "[Added]: Ability to set the type of Service on the dashboard Service"
+    - "[Added]: Support high availability (HA) mode for controller with multiple replicas"

charts/argo-rollouts/templates/controller/deployment.yaml

@@ -12,6 +12,7 @@ spec:
       {{- include "argo-rollouts.selectorLabels" . | nindent 6 }}
   strategy:
     type: Recreate
+  replicas: {{ .Values.controller.replicas }}
   template:
     metadata:
       {{- with .Values.podAnnotations }}
@@ -36,6 +37,9 @@ spec:
         {{- if not .Values.clusterInstall }}
         - --namespaced
         {{- end }}
+        {{- if gt .Values.controller.replicas 1.0 }}
+        - --leader-elect
+        {{- end }}
         {{- with .Values.controller.extraArgs }}
         {{- toYaml . | nindent 8 }}
         {{- end }}

charts/argo-rollouts/values.yaml

@@ -11,6 +11,7 @@ controller:
   nodeSelector: {}
   tolerations: []
   affinity: {}
+  replicas: 1
   image:
     registry: quay.io
     repository: argoproj/argo-rollouts