Allow configuration of topologySpreadConstraints for flagger deployment

Resolves: fluxcd#1765
frittentheke · Feb 20, 2025 · 5a29a7f · 5a29a7f
1 parent 660ed74
commit 5a29a7f
Show file tree

Hide file tree

Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/charts/flagger/templates/deployment.yaml b/charts/flagger/templates/deployment.yaml
@@ -49,6 +49,10 @@ spec:
       affinity:
         {{- tpl (toYaml .Values.affinity) . | nindent 8 }}
       {{- end }}
+      {{- if .Values.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- tpl (toYaml .Values.topologySpreadConstraints) . | nindent 8 }}
+      {{- end }}
       {{- if .Values.image.pullSecret }}
       imagePullSecrets:
         - name: {{ .Values.image.pullSecret }}
@@ -64,7 +68,7 @@ spec:
         {{- end }}
       {{- if .Values.podPriorityClassName }}
       priorityClassName: {{ .Values.podPriorityClassName }}
-      {{- end }}                  
+      {{- end }}
       containers:
         - name: flagger
           {{- if .Values.securityContext.enabled }}

diff --git a/charts/flagger/values.yaml b/charts/flagger/values.yaml
@@ -167,6 +167,19 @@ affinity:
               app.kubernetes.io/instance: '{{ .Release.Name }}'
           topologyKey: kubernetes.io/hostname
 
+topologySpreadConstraints:
+  - labelSelector:
+      matchLabels:
+        app.kubernetes.io/name: '{{ template "flagger.name" . }}'
+        app.kubernetes.io/instance: '{{ .Release.Name }}'
+    matchLabelKeys:
+      - pod-template-hash
+    topologyKey: topology.kubernetes.io/zone
+    maxSkew: 1
+    whenUnsatisfiable: ScheduleAnyway
+
+
+
 prometheus:
   # to be used with ingress controllers
   install: false