Bagatur (baskaryan) · Jul 30, 2026 · Jul 27, 2026 · Jul 27, 2026 · Jul 27, 2026 · Jul 27, 2026
diff --git a/charts/langgraph-cloud/README.md b/charts/langgraph-cloud/README.md
@@ -375,6 +375,7 @@ If you are upgrading from a chart revision that used the old flat MongoDB values
 | mongo.external.enabled | bool | `false` | Use an external MongoDB deployment instead of the chart-managed MongoDB instance. |
 | mongo.external.existingSecretName | string | `""` | Existing secret name containing the MongoDB connection URL. |
 | mongo.statefulSet.persistence.size | string | `"8Gi"` | Persistent volume size for the bundled MongoDB instance. |
+| mongo.statefulSet.priorityClassName | string | `""` | Optional priority class for the in-chart MongoDB pod. |
 | mongo.statefulSet.resources | object | `{"limits":{"cpu":"2000m","memory":"4Gi"},"requests":{"cpu":"500m","memory":"1Gi"}}` | Resource requests and limits for the bundled MongoDB pod. |
 | mongo.statefulSet.updateStrategy | object | `{}` | Optional StatefulSet update strategy for the in-chart MongoDB instance. Leave unset to keep the Kubernetes default RollingUpdate behavior. |
 | nameOverride | string | `""` | Provide a name in place of `langgraph-cloud` for the chart |

diff --git a/charts/langgraph-cloud/templates/mongo/stateful-set.yaml b/charts/langgraph-cloud/templates/mongo/stateful-set.yaml
@@ -28,6 +28,9 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- if .Values.mongo.statefulSet.priorityClassName }}
+      priorityClassName: {{ .Values.mongo.statefulSet.priorityClassName }}
+      {{- end }}
       terminationGracePeriodSeconds: 30
       {{- include "langGraphCloud.dnsConfig" . | nindent 6 }}
       containers:

diff --git a/charts/langgraph-cloud/tests/priority_class_name_test.yaml b/charts/langgraph-cloud/tests/priority_class_name_test.yaml
@@ -0,0 +1,19 @@
+suite: StatefulSet priorityClassName rendering
+templates:
+  - mongo/stateful-set.yaml
+tests:
+  - it: does not render MongoDB priorityClassName by default
+    set:
+      mongo.enabled: true
+    asserts:
+      - notExists:
+          path: spec.template.spec.priorityClassName
+
+  - it: renders a configured MongoDB priorityClassName
+    set:
+      mongo.enabled: true
+      mongo.statefulSet.priorityClassName: database-priority
+    asserts:
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: database-priority
diff --git a/charts/langgraph-cloud/values.yaml b/charts/langgraph-cloud/values.yaml
@@ -412,6 +412,8 @@ mongo:
     # -- Existing secret name containing the MongoDB connection URL.
     existingSecretName: ""
   statefulSet:
+    # -- Optional priority class for the in-chart MongoDB pod.
+    priorityClassName: ""
     # -- Optional StatefulSet update strategy for the in-chart MongoDB instance.
     # Leave unset to keep the Kubernetes default RollingUpdate behavior.
     updateStrategy: {}

diff --git a/charts/langgraph-dataplane/README.md b/charts/langgraph-dataplane/README.md
@@ -63,6 +63,7 @@ You can find the guide to deploy a LangGraph Dataplane [here](https://langchain-
 | operator.deployment.lifecycle | object | `{}` |  |
 | operator.deployment.nodeSelector | object | `{}` |  |
 | operator.deployment.podSecurityContext | object | `{}` |  |
+| operator.deployment.priorityClassName | string | `""` |  |
 | operator.deployment.replicas | int | `1` |  |
 | operator.deployment.resources.limits.cpu | string | `"2000m"` |  |
 | operator.deployment.resources.limits.memory | string | `"4Gi"` |  |
@@ -140,6 +141,7 @@ You can find the guide to deploy a LangGraph Dataplane [here](https://langchain-
 | listener.deployment.livenessProbe.timeoutSeconds | int | `60` |  |
 | listener.deployment.nodeSelector | object | `{}` |  |
 | listener.deployment.podSecurityContext | object | `{}` |  |
+| listener.deployment.priorityClassName | string | `""` |  |
 | listener.deployment.readinessProbe.failureThreshold | int | `6` |  |
 | listener.deployment.readinessProbe.httpGet.path | string | `"/health"` |  |
 | listener.deployment.readinessProbe.httpGet.port | int | `8080` |  |
@@ -188,6 +190,7 @@ You can find the guide to deploy a LangGraph Dataplane [here](https://langchain-
 | operator.deployment.lifecycle | object | `{}` |  |
 | operator.deployment.nodeSelector | object | `{}` |  |
 | operator.deployment.podSecurityContext | object | `{}` |  |
+| operator.deployment.priorityClassName | string | `""` |  |
 | operator.deployment.replicas | int | `1` |  |
 | operator.deployment.resources.limits.cpu | string | `"2000m"` |  |
 | operator.deployment.resources.limits.memory | string | `"4Gi"` |  |
@@ -266,6 +269,7 @@ You can find the guide to deploy a LangGraph Dataplane [here](https://langchain-
 | redis.statefulSet.persistence.storageClassName | string | `""` |  |
 | redis.statefulSet.persistentVolumeClaimRetentionPolicy | object | `{}` |  |
 | redis.statefulSet.podSecurityContext | object | `{}` |  |
+| redis.statefulSet.priorityClassName | string | `""` | Optional priority class for the in-chart Redis pod. |
 | redis.statefulSet.readinessProbe.exec.command[0] | string | `"/bin/sh"` |  |
 | redis.statefulSet.readinessProbe.exec.command[1] | string | `"-c"` |  |
 | redis.statefulSet.readinessProbe.exec.command[2] | string | `"exec redis-cli ping"` |  |

diff --git a/charts/langgraph-dataplane/templates/listener/deployment.yaml b/charts/langgraph-dataplane/templates/listener/deployment.yaml
@@ -64,6 +64,9 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- if .Values.listener.deployment.priorityClassName }}
+      priorityClassName: {{ .Values.listener.deployment.priorityClassName }}
+      {{- end }}
       securityContext:
         {{- toYaml .Values.listener.deployment.podSecurityContext | nindent 8 }}
       serviceAccountName: {{ include "listener.serviceAccountName" . }}

diff --git a/charts/langgraph-dataplane/templates/operator/deployment.yaml b/charts/langgraph-dataplane/templates/operator/deployment.yaml
@@ -44,6 +44,9 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- if .Values.operator.deployment.priorityClassName }}
+      priorityClassName: {{ .Values.operator.deployment.priorityClassName }}
+      {{- end }}
       {{- with .Values.operator.deployment.podSecurityContext }}
       securityContext:
         {{- toYaml . | nindent 8 }}

diff --git a/charts/langgraph-dataplane/templates/redis/stateful-set.yaml b/charts/langgraph-dataplane/templates/redis/stateful-set.yaml
@@ -46,6 +46,9 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- if .Values.redis.statefulSet.priorityClassName }}
+      priorityClassName: {{ .Values.redis.statefulSet.priorityClassName }}
+      {{- end }}
       terminationGracePeriodSeconds: {{ .Values.redis.statefulSet.terminationGracePeriodSeconds }}
       securityContext:
         {{- toYaml .Values.redis.statefulSet.podSecurityContext | nindent 8 }}

diff --git a/charts/langgraph-dataplane/tests/deployment_priority_class_name_test.yaml b/charts/langgraph-dataplane/tests/deployment_priority_class_name_test.yaml
@@ -0,0 +1,29 @@
+suite: Deployment priorityClassName rendering
+templates:
+  - listener/deployment.yaml
+  - operator/deployment.yaml
+  - operator/config-map.yaml
+tests:
+  - it: does not render listener priorityClassName by default
+    template: listener/deployment.yaml
+    asserts:
+      - notExists:
+          path: spec.template.spec.priorityClassName
+
+  - it: renders a configured listener priorityClassName
+    template: listener/deployment.yaml
+    set:
+      listener.deployment.priorityClassName: workload-priority
+    asserts:
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: workload-priority
+
+  - it: renders a configured operator priorityClassName
+    template: operator/deployment.yaml
+    set:
+      operator.deployment.priorityClassName: workload-priority
+    asserts:
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: workload-priority
diff --git a/charts/langgraph-dataplane/tests/priority_class_name_test.yaml b/charts/langgraph-dataplane/tests/priority_class_name_test.yaml
@@ -0,0 +1,16 @@
+suite: StatefulSet priorityClassName rendering
+templates:
+  - redis/stateful-set.yaml
+tests:
+  - it: does not render Redis priorityClassName by default
+    asserts:
+      - notExists:
+          path: spec.template.spec.priorityClassName
+
+  - it: renders a configured Redis priorityClassName
+    set:
+      redis.statefulSet.priorityClassName: database-priority
+    asserts:
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: database-priority
diff --git a/charts/langgraph-dataplane/values.yaml b/charts/langgraph-dataplane/values.yaml
@@ -105,6 +105,7 @@ listener:
     podSecurityContext: {}
     securityContext: {}
     lifecycle: {}
+    priorityClassName: ""
     resources:
       limits:
         cpu: 2000m
@@ -185,6 +186,7 @@ operator:
     podSecurityContext: {}
     securityContext: {}
     lifecycle: {}
+    priorityClassName: ""
     resources:
       limits:
         cpu: 2000m
@@ -389,6 +391,8 @@ redis:
     existingSecretName: ""
   containerPort: 6379
   statefulSet:
+    # -- Optional priority class for the in-chart Redis pod.
+    priorityClassName: ""
     # -- Optional StatefulSet update strategy for the in-chart Redis instance.
     # Leave unset to keep the Kubernetes default RollingUpdate behavior.
     updateStrategy: {}

diff --git a/charts/langsmith-auth-proxy/README.md b/charts/langsmith-auth-proxy/README.md
@@ -93,6 +93,7 @@ Control which phases are sent to the transformer via `processingMode`:
 | authProxy.deployment.livenessProbe.timeoutSeconds | int | `1` |  |
 | authProxy.deployment.nodeSelector | object | `{}` |  |
 | authProxy.deployment.podSecurityContext | object | `{}` |  |
+| authProxy.deployment.priorityClassName | string | `""` |  |
 | authProxy.deployment.readinessProbe.failureThreshold | int | `6` |  |
 | authProxy.deployment.readinessProbe.httpGet.path | string | `"/healthz"` |  |
 | authProxy.deployment.readinessProbe.httpGet.port | int | `10000` |  |

diff --git a/charts/langsmith-auth-proxy/templates/auth-proxy/deployment.yaml b/charts/langsmith-auth-proxy/templates/auth-proxy/deployment.yaml
@@ -50,6 +50,9 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- if .Values.authProxy.deployment.priorityClassName }}
+      priorityClassName: {{ .Values.authProxy.deployment.priorityClassName }}
+      {{- end }}
       securityContext:
         {{- include "authProxy.podSecurityContext" (dict "Values" .Values "componentSecurityContext" .Values.authProxy.deployment.podSecurityContext) | nindent 8 }}
       serviceAccountName: {{ include "authProxy.serviceAccountName" . }}

diff --git a/charts/langsmith-auth-proxy/tests/priority_class_name_test.yaml b/charts/langsmith-auth-proxy/tests/priority_class_name_test.yaml
@@ -0,0 +1,33 @@
+suite: Deployment priorityClassName rendering
+templates:
+  - auth-proxy/config-map.yaml
+  - auth-proxy/deployment.yaml
+values:
+  - common-values.yaml
+tests:
+  - it: does not render auth proxy priorityClassName by default
+    template: auth-proxy/deployment.yaml
+    asserts:
+      - notExists:
+          path: spec.template.spec.priorityClassName
+
+  - it: renders a configured auth proxy priorityClassName
+    template: auth-proxy/deployment.yaml
+    set:
+      authProxy.deployment.priorityClassName: workload-priority
+    asserts:
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: workload-priority
+
+  - it: renders priorityClassName for an auth proxy Rollout
+    template: auth-proxy/deployment.yaml
+    set:
+      authProxy.rollout.enabled: true
+      authProxy.deployment.priorityClassName: workload-priority
+    asserts:
+      - isKind:
+          of: Rollout
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: workload-priority
diff --git a/charts/langsmith-auth-proxy/values.yaml b/charts/langsmith-auth-proxy/values.yaml
@@ -160,6 +160,7 @@ authProxy:
     podSecurityContext: {}
     securityContext: {}
     lifecycle: {}
+    priorityClassName: ""
     resources:
       limits:
         cpu: 500m

diff --git a/charts/langsmith-observability/README.md b/charts/langsmith-observability/README.md
@@ -161,6 +161,7 @@ Values for Loki Single Binary: `https://github.com/grafana/loki/blob/main/produc
 | mimir.persistence.storageClass | string | `""` |  |
 | mimir.podAnnotations | object | `{}` |  |
 | mimir.podSecurityContext | object | `{}` |  |
+| mimir.priorityClassName | string | `""` | Optional priority class for the Mimir pod. |
 | mimir.readinessProbe.failureThreshold | int | `3` |  |
 | mimir.readinessProbe.httpGet.path | string | `"/ready"` |  |
 | mimir.readinessProbe.httpGet.port | string | `"http"` |  |

diff --git a/charts/langsmith-observability/templates/mimir/stateful-set.yaml b/charts/langsmith-observability/templates/mimir/stateful-set.yaml
@@ -25,6 +25,9 @@ spec:
         {{- toYaml .Values.mimir.podAnnotations | nindent 8 }}
         {{- end }}
     spec:
+      {{- if .Values.mimir.priorityClassName }}
+      priorityClassName: {{ .Values.mimir.priorityClassName }}
+      {{- end }}
       containers:
         - name: mimir
           image: {{ .Values.mimir.image.registry }}/{{ .Values.mimir.image.repository }}{{ if .Values.mimir.image.tag }}:{{ .Values.mimir.image.tag }}{{ end }}

diff --git a/charts/langsmith-observability/tests/priority_class_name_test.yaml b/charts/langsmith-observability/tests/priority_class_name_test.yaml
@@ -0,0 +1,22 @@
+suite: StatefulSet priorityClassName rendering
+templates:
+  - mimir/stateful-set.yaml
+  - mimir/config-map.yaml
+tests:
+  - it: does not render Mimir priorityClassName by default
+    template: mimir/stateful-set.yaml
+    set:
+      mimir.enabled: true
+    asserts:
+      - notExists:
+          path: spec.template.spec.priorityClassName
+
+  - it: renders a configured Mimir priorityClassName
+    template: mimir/stateful-set.yaml
+    set:
+      mimir.enabled: true
+      mimir.priorityClassName: observability-priority
+    asserts:
+      - equal:
+          path: spec.template.spec.priorityClassName
+          value: observability-priority
diff --git a/charts/langsmith-observability/values.yaml b/charts/langsmith-observability/values.yaml
@@ -159,6 +159,8 @@ loki:
 
 mimir:
   enabled: false
+  # -- Optional priority class for the Mimir pod.
+  priorityClassName: ""
   image:
     registry: docker.io
     repository: grafana/mimir

diff --git a/charts/langsmith/Chart.yaml b/charts/langsmith/Chart.yaml
@@ -5,5 +5,5 @@ maintainers:
     email: ankush@langchain.dev
 description: Helm chart to deploy the langsmith application and all services it depends on.
 type: application
-version: 0.16.0-rc.16
-appVersion: "0.16.21rc1"
+version: 0.16.0-rc.22
+appVersion: "0.16.25rc1"