feat: allow waitForMongodb init container resources to be specified

.changeset/waitformongodb-resources.md

@@ -0,0 +1,5 @@
+---
+"helm-charts": minor
+---
+
+Allow resources to be specified for the wait-for-mongodb init container via `hyperdx.deployment.waitForMongodb.resources` (empty by default). Required in clusters that enforce namespace resource quotas, where containers without requests/limits are rejected. Also documents how to set MongoDB container resources through the MongoDBCommunity `statefulSet` spec override. Ports ClickHouse/ClickStack-helm-charts#187 to the current chart layout.

charts/clickstack/templates/hyperdx/deployment.yaml

@@ -71,6 +71,10 @@ spec:
           securityContext:
             {{- toYaml . | nindent 12 }}
           {{- end }}
+          {{- with .Values.hyperdx.deployment.waitForMongodb.resources }}
+          resources:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
           command: ['sh', '-c', 'until nc -z {{ include "clickstack.mongodb.svc" . }} 27017; do echo waiting for mongodb; sleep 2; done;']
         {{- end }}
         {{- with .Values.hyperdx.deployment.initContainers }}

charts/clickstack/tests/hyperdx-deployment_test.yaml

@@ -241,6 +241,42 @@ tests:
           path: spec.template.spec.initContainers[0].imagePullPolicy
           value: Always
 
+  - it: should not set resources on the wait-for-mongodb initContainer by default
+    set:
+      mongodb:
+        enabled: true
+    asserts:
+      - isNull:
+          path: spec.template.spec.initContainers[0].resources
+
+  - it: should render resources on the wait-for-mongodb initContainer when set
+    set:
+      mongodb:
+        enabled: true
+      hyperdx:
+        deployment:
+          waitForMongodb:
+            resources:
+              requests:
+                memory: 100Mi
+                cpu: 100m
+              limits:
+                memory: 200Mi
+                cpu: 500m
+    asserts:
+      - equal:
+          path: spec.template.spec.initContainers[0].resources.requests.memory
+          value: 100Mi
+      - equal:
+          path: spec.template.spec.initContainers[0].resources.requests.cpu
+          value: 100m
+      - equal:
+          path: spec.template.spec.initContainers[0].resources.limits.memory
+          value: 200Mi
+      - equal:
+          path: spec.template.spec.initContainers[0].resources.limits.cpu
+          value: 500m
+
   - it: should not include initContainers when mongodb is disabled and no user init containers are provided
     set:
       mongodb:

charts/clickstack/values.yaml

@@ -144,6 +144,16 @@ hyperdx:
     waitForMongodb:
       image: "busybox@sha256:1fcf5df59121b92d61e066df1788e8df0cc35623f5d62d9679a41e163b6a0cdb"
       pullPolicy: IfNotPresent
+      # Resources for the wait-for-mongodb init container. Useful in clusters
+      # that enforce namespace resource quotas.
+      resources: {}
+        # Example:
+        # requests:
+        #   memory: "100Mi"
+        #   cpu: "100m"
+        # limits:
+        #   memory: "200Mi"
+        #   cpu: "500m"
     # Default connections and sources (ENABLED BY DEFAULT)
     # Set to empty string to disable: defaultConnections: "" or defaultSources: ""
     # To use an existing secret, set useExistingConfigSecret: true
@@ -334,6 +344,16 @@ mongodb:
   # Full MongoDBCommunity CRD spec -- rendered verbatim into the CR.
   # See https://github.com/mongodb/mongodb-kubernetes/tree/master/docs/mongodbcommunity
   # for all available fields. Add persistence, nodeSelector, tolerations, etc. here.
+  # Container resources can be set via the operator's statefulset override, e.g.:
+  #   statefulSet:
+  #     spec:
+  #       template:
+  #         spec:
+  #           containers:
+  #             - name: mongod
+  #               resources:
+  #                 requests: { memory: "512Mi", cpu: "500m" }
+  #                 limits: { memory: "2Gi", cpu: "2" }
   spec:
     members: 1
     type: ReplicaSet