chart(feature): add support for revisionHistoryLimit and dnsConfig

DrFaust92 · claude · DrFaust92 · commit 63892a663a57 · 2026-04-25T21:05:18.000-04:00
Expose Deployment revisionHistoryLimit and pod dnsPolicy/dnsConfig
across all Selenium Grid components (hub, router, distributor, event
bus, session map, session queue, and chrome/edge/firefox nodes including
KEDA ScaledJob pods). Values can be set globally via
global.seleniumGrid.{revisionHistoryLimit,dnsPolicy,dnsConfig} and
overridden per component, mirroring the existing affinity pattern.

Co-Authored-By: Claude Opus 4.7 (1M context) &lt;noreply@anthropic.com&gt;
diff --git a/charts/selenium-grid/templates/_helpers.tpl b/charts/selenium-grid/templates/_helpers.tpl
@@ -514,6 +514,13 @@ template:
   {{- with .node.affinity }}
     affinity: {{- toYaml . | nindent 6 }}
   {{- end }}
+  {{- if or $.Values.global.seleniumGrid.dnsPolicy .node.dnsPolicy }}
+    dnsPolicy: {{ default $.Values.global.seleniumGrid.dnsPolicy .node.dnsPolicy }}
+  {{- end }}
+  {{- if or $.Values.global.seleniumGrid.dnsConfig .node.dnsConfig }}
+    {{- $dnsConfigYaml := default $.Values.global.seleniumGrid.dnsConfig .node.dnsConfig }}
+    dnsConfig: {{- toYaml $dnsConfigYaml | nindent 6 }}
+  {{- end }}
   {{- with .node.tolerations }}
     tolerations:
       {{ toYaml . | nindent 4 }}
diff --git a/charts/selenium-grid/templates/chrome-node-deployment.yaml b/charts/selenium-grid/templates/chrome-node-deployment.yaml
@@ -18,6 +18,7 @@ spec:
   {{- if and (not .Values.autoscaling.enabled) (not .Values.autoscaling.enableWithExistingKEDA) }}
   replicas: {{ .Values.chromeNode.replicas }}
   {{end}}
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.chromeNode.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.chromeNode.fullname" . }}
diff --git a/charts/selenium-grid/templates/distributor-deployment.yaml b/charts/selenium-grid/templates/distributor-deployment.yaml
@@ -13,6 +13,7 @@ metadata:
     {{- end }}
 spec:
   replicas: 1
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.components.distributor.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.distributor.fullname" . }}
@@ -170,7 +171,14 @@ spec:
     {{- if or .Values.global.seleniumGrid.affinity .Values.components.distributor.affinity }}
       {{- $affinityYaml := default .Values.global.seleniumGrid.affinity .Values.components.distributor.affinity }}
       affinity: {{- toYaml $affinityYaml | nindent 8 }}
-    {{- end }}     
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsPolicy .Values.components.distributor.dnsPolicy }}
+      dnsPolicy: {{ default .Values.global.seleniumGrid.dnsPolicy .Values.components.distributor.dnsPolicy }}
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsConfig .Values.components.distributor.dnsConfig }}
+      {{- $dnsConfigYaml := default .Values.global.seleniumGrid.dnsConfig .Values.components.distributor.dnsConfig }}
+      dnsConfig: {{- toYaml $dnsConfigYaml | nindent 8 }}
+    {{- end }}
     {{- with .Values.components.distributor.tolerations }}
       tolerations: {{ toYaml . | nindent 6 }}
     {{- end }}
diff --git a/charts/selenium-grid/templates/edge-node-deployment.yaml b/charts/selenium-grid/templates/edge-node-deployment.yaml
@@ -18,6 +18,7 @@ spec:
   {{- if and (not .Values.autoscaling.enabled) (not .Values.autoscaling.enableWithExistingKEDA) }}
   replicas: {{ .Values.edgeNode.replicas }}
   {{end}}
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.edgeNode.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.edgeNode.fullname" . }}
diff --git a/charts/selenium-grid/templates/event-bus-deployment.yaml b/charts/selenium-grid/templates/event-bus-deployment.yaml
@@ -13,6 +13,7 @@ metadata:
     {{- end }}
 spec:
   replicas: 1
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.components.eventBus.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.eventBus.fullname" . }}
@@ -81,7 +82,14 @@ spec:
     {{- if or .Values.global.seleniumGrid.affinity .Values.components.eventBus.affinity }}
       {{- $affinityYaml := default .Values.global.seleniumGrid.affinity .Values.components.eventBus.affinity }}
       affinity: {{- toYaml $affinityYaml | nindent 8 }}
-    {{- end }}      
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsPolicy .Values.components.eventBus.dnsPolicy }}
+      dnsPolicy: {{ default .Values.global.seleniumGrid.dnsPolicy .Values.components.eventBus.dnsPolicy }}
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsConfig .Values.components.eventBus.dnsConfig }}
+      {{- $dnsConfigYaml := default .Values.global.seleniumGrid.dnsConfig .Values.components.eventBus.dnsConfig }}
+      dnsConfig: {{- toYaml $dnsConfigYaml | nindent 8 }}
+    {{- end }}
     {{- with .Values.components.eventBus.tolerations }}
       tolerations: {{ toYaml . | nindent 6 }}
     {{- end }}
diff --git a/charts/selenium-grid/templates/firefox-node-deployment.yaml b/charts/selenium-grid/templates/firefox-node-deployment.yaml
@@ -18,6 +18,7 @@ spec:
   {{- if and (not .Values.autoscaling.enabled) (not .Values.autoscaling.enableWithExistingKEDA) }}
   replicas: {{ .Values.firefoxNode.replicas }}
   {{end}}
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.firefoxNode.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.firefoxNode.fullname" . }}
diff --git a/charts/selenium-grid/templates/hub-deployment.yaml b/charts/selenium-grid/templates/hub-deployment.yaml
@@ -16,6 +16,7 @@ metadata:
     {{- end }}
 spec:
   replicas: 1
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.hub.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.hub.fullname" . }}
@@ -170,7 +171,14 @@ spec:
     {{- if or .Values.global.seleniumGrid.affinity .Values.hub.affinity }}
       {{- $affinityYaml := default .Values.global.seleniumGrid.affinity .Values.hub.affinity }}
       affinity: {{- toYaml $affinityYaml | nindent 8 }}
-    {{- end }}      
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsPolicy .Values.hub.dnsPolicy }}
+      dnsPolicy: {{ default .Values.global.seleniumGrid.dnsPolicy .Values.hub.dnsPolicy }}
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsConfig .Values.hub.dnsConfig }}
+      {{- $dnsConfigYaml := default .Values.global.seleniumGrid.dnsConfig .Values.hub.dnsConfig }}
+      dnsConfig: {{- toYaml $dnsConfigYaml | nindent 8 }}
+    {{- end }}
     {{- with .Values.hub.tolerations }}
       tolerations: {{ toYaml . | nindent 6 }}
     {{- end }}
diff --git a/charts/selenium-grid/templates/router-deployment.yaml b/charts/selenium-grid/templates/router-deployment.yaml
@@ -13,6 +13,7 @@ metadata:
     {{- end }}
 spec:
   replicas: 1
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.components.router.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.router.fullname" . }}
@@ -154,7 +155,14 @@ spec:
     {{- if or .Values.global.seleniumGrid.affinity .Values.components.router.affinity }}
       {{- $affinityYaml := default .Values.global.seleniumGrid.affinity .Values.components.router.affinity }}
       affinity: {{- toYaml $affinityYaml | nindent 8 }}
-    {{- end }}      
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsPolicy .Values.components.router.dnsPolicy }}
+      dnsPolicy: {{ default .Values.global.seleniumGrid.dnsPolicy .Values.components.router.dnsPolicy }}
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsConfig .Values.components.router.dnsConfig }}
+      {{- $dnsConfigYaml := default .Values.global.seleniumGrid.dnsConfig .Values.components.router.dnsConfig }}
+      dnsConfig: {{- toYaml $dnsConfigYaml | nindent 8 }}
+    {{- end }}
     {{- with .Values.components.router.tolerations }}
       tolerations: {{ toYaml . | nindent 6 }}
     {{- end }}
diff --git a/charts/selenium-grid/templates/session-map-deployment.yaml b/charts/selenium-grid/templates/session-map-deployment.yaml
@@ -13,6 +13,7 @@ metadata:
     {{- end }}
 spec:
   replicas: 1
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.components.sessionMap.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.sessionMap.fullname" . }}
@@ -80,7 +81,14 @@ spec:
     {{- if or .Values.global.seleniumGrid.affinity .Values.components.sessionMap.affinity }}
       {{- $affinityYaml := default .Values.global.seleniumGrid.affinity .Values.components.sessionMap.affinity }}
       affinity: {{- toYaml $affinityYaml | nindent 8 }}
-    {{- end }}      
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsPolicy .Values.components.sessionMap.dnsPolicy }}
+      dnsPolicy: {{ default .Values.global.seleniumGrid.dnsPolicy .Values.components.sessionMap.dnsPolicy }}
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsConfig .Values.components.sessionMap.dnsConfig }}
+      {{- $dnsConfigYaml := default .Values.global.seleniumGrid.dnsConfig .Values.components.sessionMap.dnsConfig }}
+      dnsConfig: {{- toYaml $dnsConfigYaml | nindent 8 }}
+    {{- end }}
     {{- with .Values.components.sessionMap.tolerations }}
       tolerations: {{ toYaml . | nindent 6 }}
     {{- end }}
diff --git a/charts/selenium-grid/templates/session-queue-deployment.yaml b/charts/selenium-grid/templates/session-queue-deployment.yaml
@@ -13,6 +13,7 @@ metadata:
     {{- end }}
 spec:
   replicas: 1
+  revisionHistoryLimit: {{ default .Values.global.seleniumGrid.revisionHistoryLimit .Values.components.sessionQueue.revisionHistoryLimit }}
   selector:
     matchLabels:
       app: {{ template "seleniumGrid.sessionQueue.fullname" . }}
@@ -77,7 +78,14 @@ spec:
     {{- if or .Values.global.seleniumGrid.affinity .Values.components.sessionQueue.affinity }}
       {{- $affinityYaml := default .Values.global.seleniumGrid.affinity .Values.components.sessionQueue.affinity }}
       affinity: {{- toYaml $affinityYaml | nindent 8 }}
-    {{- end }}      
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsPolicy .Values.components.sessionQueue.dnsPolicy }}
+      dnsPolicy: {{ default .Values.global.seleniumGrid.dnsPolicy .Values.components.sessionQueue.dnsPolicy }}
+    {{- end }}
+    {{- if or .Values.global.seleniumGrid.dnsConfig .Values.components.sessionQueue.dnsConfig }}
+      {{- $dnsConfigYaml := default .Values.global.seleniumGrid.dnsConfig .Values.components.sessionQueue.dnsConfig }}
+      dnsConfig: {{- toYaml $dnsConfigYaml | nindent 8 }}
+    {{- end }}
     {{- with .Values.components.sessionQueue.tolerations }}
       tolerations: {{ toYaml . | nindent 6 }}
     {{- end }}
diff --git a/charts/selenium-grid/values.yaml b/charts/selenium-grid/values.yaml
@@ -27,6 +27,12 @@ global:
     defaultComponentLivenessProbe: exec
     # probe logs output can be retrieved using `kubectl logs`
     stdoutProbeLog: false
+    # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Can be overridden per component.
+    revisionHistoryLimit: 10
+    # DNS policy for all pods (see https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy). Can be overridden per component.
+    dnsPolicy: ""
+    # DNS config for all pods (see https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-dns-config). Can be overridden per component.
+    dnsConfig: {}
 
 tls:
   # Name of external secret containing the TLS certificate and key
@@ -337,6 +343,12 @@ components:
     nodeSelector: {}
     # Priority class name for router pods
     priorityClassName: ""
+    # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+    revisionHistoryLimit:
+    # DNS policy for router pods. Defaults to global.seleniumGrid.dnsPolicy.
+    dnsPolicy: ""
+    # DNS config for router pods. Defaults to global.seleniumGrid.dnsConfig.
+    dnsConfig: {}
 
   # Configuration for distributor component
   distributor:
@@ -399,6 +411,12 @@ components:
     nodeSelector: {}
     # Priority class name for Distributor pods
     priorityClassName: ""
+    # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+    revisionHistoryLimit:
+    # DNS policy for Distributor pods. Defaults to global.seleniumGrid.dnsPolicy.
+    dnsPolicy: ""
+    # DNS config for Distributor pods. Defaults to global.seleniumGrid.dnsConfig.
+    dnsConfig: {}
 
   # Configuration for Event Bus component
   eventBus:
@@ -438,6 +456,12 @@ components:
     nodeSelector: {}
     # Priority class name for Event Bus pods
     priorityClassName: ""
+    # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+    revisionHistoryLimit:
+    # DNS policy for Event Bus pods. Defaults to global.seleniumGrid.dnsPolicy.
+    dnsPolicy: ""
+    # DNS config for Event Bus pods. Defaults to global.seleniumGrid.dnsConfig.
+    dnsConfig: {}
 
   # Configuration for Session Map component
   sessionMap:
@@ -469,6 +493,12 @@ components:
     nodeSelector: {}
     # Priority class name for Session Map pods
     priorityClassName: ""
+    # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+    revisionHistoryLimit:
+    # DNS policy for Session Map pods. Defaults to global.seleniumGrid.dnsPolicy.
+    dnsPolicy: ""
+    # DNS config for Session Map pods. Defaults to global.seleniumGrid.dnsConfig.
+    dnsConfig: {}
 
   # Configuration for Session Queue component
   sessionQueue:
@@ -501,6 +531,12 @@ components:
     nodeSelector: {}
     # Priority class name for Session Queue pods
     priorityClassName: ""
+    # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+    revisionHistoryLimit:
+    # DNS policy for Session Queue pods. Defaults to global.seleniumGrid.dnsPolicy.
+    dnsPolicy: ""
+    # DNS config for Session Queue pods. Defaults to global.seleniumGrid.dnsConfig.
+    dnsConfig: {}
 
   # Custom sub path for all components
   subPath: ""
@@ -621,6 +657,12 @@ hub:
   nodeSelector: {}
   # Priority class name for selenium-hub pods
   priorityClassName: ""
+  # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+  revisionHistoryLimit:
+  # DNS policy for selenium-hub pods. Defaults to global.seleniumGrid.dnsPolicy.
+  dnsPolicy: ""
+  # DNS config for selenium-hub pods. Defaults to global.seleniumGrid.dnsConfig.
+  dnsConfig: {}
 
 tracing:
   enabled: false
@@ -788,6 +830,12 @@ chromeNode:
   dshmVolumeSizeLimit: ""
   # Priority class name for chrome-node pods
   priorityClassName: ""
+  # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+  revisionHistoryLimit:
+  # DNS policy for chrome-node pods. Defaults to global.seleniumGrid.dnsPolicy.
+  dnsPolicy: ""
+  # DNS config for chrome-node pods. Defaults to global.seleniumGrid.dnsConfig.
+  dnsConfig: {}
 
   # Wait for pod startup
   startupProbe:
@@ -949,6 +997,12 @@ firefoxNode:
   dshmVolumeSizeLimit: "2Gi"
   # Priority class name for firefox-node pods
   priorityClassName: ""
+  # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+  revisionHistoryLimit:
+  # DNS policy for firefox-node pods. Defaults to global.seleniumGrid.dnsPolicy.
+  dnsPolicy: ""
+  # DNS config for firefox-node pods. Defaults to global.seleniumGrid.dnsConfig.
+  dnsConfig: {}
 
   # Wait for pod startup
   startupProbe:
@@ -1108,6 +1162,12 @@ edgeNode:
   dshmVolumeSizeLimit: ""
   # Priority class name for edge-node pods
   priorityClassName: ""
+  # specify how many old ReplicaSets for this Deployment you want to retain. The rest will be garbage-collected in the background. Defaults to global.seleniumGrid.revisionHistoryLimit.
+  revisionHistoryLimit:
+  # DNS policy for edge-node pods. Defaults to global.seleniumGrid.dnsPolicy.
+  dnsPolicy: ""
+  # DNS config for edge-node pods. Defaults to global.seleniumGrid.dnsConfig.
+  dnsConfig: {}
 
   # Wait for pod startup
   startupProbe:
