Add optional pdb for control plane and metastore (quickwit-oss#137)

* add optional pdb for control plane and metastore

* add version

Author: katlim-br

charts/quickwit/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: quickwit
 description: Sub-second search & analytics engine on cloud storage.
 type: application
-version: 0.7.17
+version: 0.7.18
 appVersion: v0.8.2
 keywords:
   - quickwit

charts/quickwit/templates/control-plane-pdb.yaml

@@ -0,0 +1,13 @@
+{{- if .Values.control_plane.podDisruptionBudget -}}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "quickwit.fullname" . }}-control-plane
+  labels:
+    {{- include "quickwit.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "quickwit.control_plane.selectorLabels" . | nindent 6 }}
+  {{- toYaml .Values.control_plane.podDisruptionBudget | nindent 2 }}
+{{- end -}}

charts/quickwit/templates/metastore-pdb.yaml

@@ -0,0 +1,13 @@
+{{- if .Values.metastore.podDisruptionBudget -}}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "quickwit.fullname" . }}-metastore
+  labels:
+    {{- include "quickwit.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "quickwit.metastore.selectorLabels" . | nindent 6 }}
+  {{- toYaml .Values.metastore.podDisruptionBudget | nindent 2 }}
+{{- end -}}

charts/quickwit/values.yaml

@@ -274,6 +274,11 @@ metastore:
     #   cpu: 100m
     #   memory: 128Mi
 
+  ## Pod distruption budget
+  podDisruptionBudget: {}
+    # maxUnavailable: 1
+    # minAvailable: 2
+
   updateStrategy: {}
     # type: RollingUpdate
 
@@ -342,6 +347,11 @@ control_plane:
     #   cpu: 100m
     #   memory: 128Mi
 
+  ## Pod distruption budget
+  podDisruptionBudget: {}
+    # maxUnavailable: 1
+    # minAvailable: 2
+
   startupProbe:
     httpGet:
       path: /health/livez