feat(rhdh): add lifecycleHooks, priorityClassName, terminationGracePeriodSeconds

charts/rhdh/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: redhat-developer-hub
 type: application
-version: 3.3.0
+version: 3.4.0
 appVersion: 2.1.0
 annotations:
   artifacthub.io/category: integration-delivery

charts/rhdh/README.md

@@ -1,7 +1,7 @@
 
 # RHDH Helm Chart for OpenShift and Kubernetes
 
-![Version: 3.3.0](https://img.shields.io/badge/Version-3.3.0-informational?style=flat-square)
+![Version: 3.4.0](https://img.shields.io/badge/Version-3.4.0-informational?style=flat-square)
 ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square)
 
 A Helm chart for deploying Red Hat Developer Hub, which is a Red Hat supported version of Backstage.
@@ -36,7 +36,7 @@ For the **Generally Available** version of this chart, see:
 helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo add redhat-developer https://redhat-developer.github.io/rhdh-chart
 
-helm install my-rhdh redhat-developer/redhat-developer-hub --version 3.3.0
+helm install my-rhdh redhat-developer/redhat-developer-hub --version 3.4.0
 ```
 
 ## Introduction
@@ -276,6 +276,7 @@ Kubernetes: `>= 1.31.0-0`
 | intelligentAssistant.plugins | Intelligent Assistant dynamic plugin packages. | list | `[{"enabled":true,"package":"ref://red-hat-developer-hub-backstage-plugin-intelligent-assistant"},{"enabled":true,"package":"ref://red-hat-developer-hub-backstage-plugin-intelligent-assistant-backend"}]` |
 | intelligentAssistant.runtimeVolume | Writable scratch volume for the sidecar (/tmp). | object | `{"emptyDir":{},"persistentVolumeClaim":{},"type":"emptyDir"}` |
 | intelligentAssistant.runtimeVolume.type | Volume type: "emptyDir" or "persistentVolumeClaim". | string | `"emptyDir"` |
+| lifecycleHooks | Lifecycle hooks for the main RHDH container. Ref: https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/ | object | `{}` |
 | livenessProbe | Liveness probe configuration. | object | `{"failureThreshold":3,"httpGet":{"path":"/.backstage/health/v1/liveness","port":"backend","scheme":"HTTP"},"periodSeconds":10,"successThreshold":1,"timeoutSeconds":4}` |
 | metrics | Prometheus metrics configuration. | object | `{"serviceMonitor":{"annotations":{},"enabled":false,"interval":"","labels":{},"path":"/metrics","port":"http-metrics"}}` |
 | nameOverride | Override the chart name used in resource naming. | string | `"developer-hub"` |
@@ -301,6 +302,7 @@ Kubernetes: `>= 1.31.0-0`
 | podSecurityContext | Pod-level security context. | object | `{}` |
 | postgresql | Built-in PostgreSQL database (bitnami subchart). | object | `{"auth":{"secretKeys":{"adminPasswordKey":"postgres-password","userPasswordKey":"password"}},"enabled":true,"image":{"digest":"","registry":"quay.io","repository":"fedora/postgresql-18","tag":"latest"},"postgresqlDataDir":"/var/lib/pgsql/data/userdata","primary":{"containerSecurityContext":{"allowPrivilegeEscalation":false,"capabilities":{"drop":["ALL"]},"enabled":false},"extraEnvVars":[{"name":"POSTGRESQL_ADMIN_PASSWORD","valueFrom":{"secretKeyRef":{"key":"{{- include \"rhdh.postgresql.adminPasswordKey\" . }}","name":"{{- include \"rhdh.postgresql.secretName\" . }}"}}}],"networkPolicy":{"enabled":false},"persistence":{"enabled":true,"mountPath":"/var/lib/pgsql/data","size":"1Gi"},"podSecurityContext":{"enabled":false},"resources":{"limits":{"cpu":"250m","ephemeral-storage":"20Mi","memory":"1024Mi"},"requests":{"cpu":"250m","memory":"256Mi"}}},"readReplicas":{"networkPolicy":{"enabled":false}},"serviceBindings":{"enabled":true}}` |
 | preInitContainers | Init containers to run BEFORE the system init containers (e.g. inject auth credentials before install-dynamic-plugins runs). | list | `[]` |
+| priorityClassName | Priority class name for pod scheduling. Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/ | string | `""` |
 | readinessProbe | Readiness probe configuration. | object | `{"failureThreshold":3,"httpGet":{"path":"/.backstage/health/v1/readiness","port":"backend","scheme":"HTTP"},"periodSeconds":10,"successThreshold":2,"timeoutSeconds":4}` |
 | replicaCount | Number of desired pods. | int | `1` |
 | resources | Resource requests and limits for the main RHDH container. | object | `{"limits":{"cpu":"1000m","ephemeral-storage":"5Gi","memory":"2.5Gi"},"requests":{"cpu":"250m","memory":"1Gi"}}` |
@@ -315,6 +317,7 @@ Kubernetes: `>= 1.31.0-0`
 | serviceAccount.name | The name of the service account to use. If not set and create is true, a name is generated using the fullname template. | string | `""` |
 | startupProbe | Startup probe configuration. Gives the application time to start before liveness/readiness probes kick in. | object | `{"failureThreshold":3,"httpGet":{"path":"/.backstage/health/v1/liveness","port":"backend","scheme":"HTTP"},"initialDelaySeconds":30,"periodSeconds":20,"successThreshold":1,"timeoutSeconds":4}` |
 | strategy | Deployment update strategy. | object | `{}` |
+| terminationGracePeriodSeconds | Duration in seconds the pod needs to terminate gracefully before being force killed. Ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#pod-termination | string | `nil` |
 | test | Test pod configuration for `helm test`. | object | `{"enabled":true,"image":{"digest":"","pullPolicy":"IfNotPresent","registry":"quay.io","repository":"curl/curl","tag":"8.22.0"},"securityContext":{"allowPrivilegeEscalation":false,"capabilities":{"drop":["ALL"]},"readOnlyRootFilesystem":true}}` |
 | tolerations | Tolerations for pod assignment. | list | `[]` |
 | topologySpreadConstraints | Topology spread constraints for pod scheduling. | list | `[]` |

charts/rhdh/templates/_backstage-pod-template.tpl

@@ -45,6 +45,12 @@ spec:
   hostAliases:
     {{- include "common.tplvalues.render" (dict "value" . "context" $) | nindent 4 }}
   {{- end }}
+  {{- with .Values.priorityClassName }}
+  priorityClassName: {{ . | quote }}
+  {{- end }}
+  {{- if not (kindIs "invalid" .Values.terminationGracePeriodSeconds) }}
+  terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }}
+  {{- end }}
   volumes:
     # --- System volumes (hardcoded, never replaced) ---
     - name: dynamic-plugins-root
@@ -249,6 +255,10 @@ spec:
       securityContext:
         {{- include "common.tplvalues.render" (dict "value" . "context" $) | nindent 8 }}
       {{- end }}
+      {{- with .Values.lifecycleHooks }}
+      lifecycle:
+        {{- include "common.tplvalues.render" (dict "value" . "context" $) | nindent 8 }}
+      {{- end }}
       {{- if .Values.commandOverride }}
       command:
         {{- include "common.tplvalues.render" (dict "value" .Values.commandOverride "context" $) | nindent 8 }}

charts/rhdh/templates/deployment.yaml

@@ -28,4 +28,4 @@ spec:
       {{- include "rhdh.selectorLabels" . | nindent 6 }}
   template:
     {{- include "rhdh.backstagePodTemplate" . | nindent 4 }}
-{{- end }}
+{{- end }}

charts/rhdh/values.schema.json

@@ -1813,6 +1813,12 @@
             "title": "Built-in Intelligent Assistant feature configuration.",
             "type": "object"
         },
+        "lifecycleHooks": {
+            "default": {},
+            "description": "Ref: https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/",
+            "title": "Lifecycle hooks for the main RHDH container.",
+            "type": "object"
+        },
         "livenessProbe": {
             "default": {
                 "failureThreshold": 3,
@@ -2332,6 +2338,12 @@
             "title": "Init containers to run BEFORE the system init containers (e.g. inject auth credentials before install-dynamic-plugins runs).",
             "type": "array"
         },
+        "priorityClassName": {
+            "default": "",
+            "description": "Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/",
+            "title": "Priority class name for pod scheduling.",
+            "type": "string"
+        },
         "readinessProbe": {
             "default": {
                 "failureThreshold": 3,
@@ -2528,6 +2540,16 @@
             "title": "Deployment update strategy.",
             "type": "object"
         },
+        "terminationGracePeriodSeconds": {
+            "default": null,
+            "description": "Ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#pod-termination",
+            "minimum": 0,
+            "title": "Duration in seconds the pod needs to terminate gracefully before being force killed.",
+            "type": [
+                "integer",
+                "null"
+            ]
+        },
         "test": {
             "additionalProperties": false,
             "properties": {

charts/rhdh/values.schema.tmpl.json

@@ -392,6 +392,25 @@
             "type": "array",
             "default": []
         },
+        "priorityClassName": {
+            "title": "Priority class name for pod scheduling.",
+            "description": "Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/",
+            "type": "string",
+            "default": ""
+        },
+        "terminationGracePeriodSeconds": {
+            "title": "Duration in seconds the pod needs to terminate gracefully before being force killed.",
+            "description": "Ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#pod-termination",
+            "type": ["integer", "null"],
+            "default": null,
+            "minimum": 0
+        },
+        "lifecycleHooks": {
+            "title": "Lifecycle hooks for the main RHDH container.",
+            "description": "Ref: https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/",
+            "type": "object",
+            "default": {}
+        },
         "deploymentAnnotations": {
             "title": "Annotations for the Deployment resource (not the pod).",
             "type": "object",

charts/rhdh/values.yaml

@@ -352,6 +352,23 @@ topologySpreadConstraints: []
 # -- Host aliases for /etc/hosts entries.
 hostAliases: []
 
+# -- Priority class name for pod scheduling.
+# Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/
+priorityClassName: ""
+
+# -- Duration in seconds the pod needs to terminate gracefully before being force killed.
+# Ref: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#pod-termination
+# @default -- `nil`
+terminationGracePeriodSeconds:
+
+# -- Lifecycle hooks for the main RHDH container.
+# Ref: https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/
+lifecycleHooks: {}
+# lifecycleHooks:
+#   preStop:
+#     exec:
+#       command: ["/bin/sh", "-c", "sleep 10"]
+
 # -- Annotations for the Deployment resource (not the pod).
 deploymentAnnotations: {}