add pod disruption budgets to chart

charts/wave/templates/poddisruptionbudget.yaml

@@ -0,0 +1,12 @@
+{{- if .Values.pdb.enabled }}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "wave-fullname" . }}
+  namespace: {{ .Release.Namespace }}
+spec:
+  selector:
+    matchLabels:
+      {{ include "wave.selectorLabels" . | nindent 6}}
+  maxUnavailable: 1
+{{- end }}

charts/wave/values.yaml

@@ -20,6 +20,10 @@ nodeSelector: {}
 # Replicas > 1 will enable leader election
 replicas: 1
 
+# Add PodDisruptionBudget which should be enabled for replicas > 1
+pdb:
+  enabled: false
+
 # Additional volumes to use in the pod.
 extraVolumes: []
 # - name: tmp