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Deprecated API Migration Guide | Kubernetes

As the Kubernetes API evolves, APIs are periodically reorganized or upgraded. When APIs evolve, the old API is deprecated and eventually removed. This page contains information you need to know when migrating from deprecated API versions to newer and more stable API versions.

The v1.32 release stopped serving the following deprecated API versions:

The flowcontrol.apiserver.k8s.io/v1beta3 API version of FlowSchema and PriorityLevelConfiguration is no longer served as of v1.32.

• Migrate manifests and API clients to use the flowcontrol.apiserver.k8s.io/v1 API version, available since v1.29.
• All existing persisted objects are accessible via the new API
• Notable changes in flowcontrol.apiserver.k8s.io/v1:
  • The PriorityLevelConfiguration spec.limited.nominalConcurrencyShares field only defaults to 30 when unspecified, and an explicit value of 0 is not changed to 30.

The v1.29 release stopped serving the following deprecated API versions:

The flowcontrol.apiserver.k8s.io/v1beta2 API version of FlowSchema and PriorityLevelConfiguration is no longer served as of v1.29.

• Migrate manifests and API clients to use the flowcontrol.apiserver.k8s.io/v1 API version, available since v1.29, or the flowcontrol.apiserver.k8s.io/v1beta3 API version, available since v1.26.
• All existing persisted objects are accessible via the new API
• Notable changes in flowcontrol.apiserver.k8s.io/v1:
  • The PriorityLevelConfiguration spec.limited.assuredConcurrencyShares field is renamed to spec.limited.nominalConcurrencyShares and only defaults to 30 when unspecified, and an explicit value of 0 is not changed to 30.
• Notable changes in flowcontrol.apiserver.k8s.io/v1beta3:
  • The PriorityLevelConfiguration spec.limited.assuredConcurrencyShares field is renamed to spec.limited.nominalConcurrencyShares

The v1.27 release stopped serving the following deprecated API versions:

The storage.k8s.io/v1beta1 API version of CSIStorageCapacity is no longer served as of v1.27.

• Migrate manifests and API clients to use the storage.k8s.io/v1 API version, available since v1.24.
• All existing persisted objects are accessible via the new API
• No notable changes

The v1.26 release stopped serving the following deprecated API versions:

The flowcontrol.apiserver.k8s.io/v1beta1 API version of FlowSchema and PriorityLevelConfiguration is no longer served as of v1.26.

• Migrate manifests and API clients to use the flowcontrol.apiserver.k8s.io/v1beta2 API version.
• All existing persisted objects are accessible via the new API
• No notable changes

The autoscaling/v2beta2 API version of HorizontalPodAutoscaler is no longer served as of v1.26.

• Migrate manifests and API clients to use the autoscaling/v2 API version, available since v1.23.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • targetAverageUtilization is replaced with target.averageUtilization and target.type: Utilization. See Autoscaling on multiple metrics and custom metrics.

The v1.25 release stopped serving the following deprecated API versions:

The batch/v1beta1 API version of CronJob is no longer served as of v1.25.

• Migrate manifests and API clients to use the batch/v1 API version, available since v1.21.
• All existing persisted objects are accessible via the new API
• No notable changes

The discovery.k8s.io/v1beta1 API version of EndpointSlice is no longer served as of v1.25.

• Migrate manifests and API clients to use the discovery.k8s.io/v1 API version, available since v1.21.
• All existing persisted objects are accessible via the new API
• Notable changes in discovery.k8s.io/v1:
  • use per Endpoint nodeName field instead of deprecated topology["kubernetes.io/hostname"] field
  • use per Endpoint zone field instead of deprecated topology["topology.kubernetes.io/zone"] field
  • topology is replaced with the deprecatedTopology field which is not writable in v1

The events.k8s.io/v1beta1 API version of Event is no longer served as of v1.25.

• Migrate manifests and API clients to use the events.k8s.io/v1 API version, available since v1.19.
• All existing persisted objects are accessible via the new API
• Notable changes in events.k8s.io/v1:
  • type is limited to Normal and Warning
  • involvedObject is renamed to regarding
  • action, reason, reportingController, and reportingInstance are required when creating new events.k8s.io/v1 Events
  • use eventTime instead of the deprecated firstTimestamp field (which is renamed to deprecatedFirstTimestamp and not permitted in new events.k8s.io/v1 Events)
  • use series.lastObservedTime instead of the deprecated lastTimestamp field (which is renamed to deprecatedLastTimestamp and not permitted in new events.k8s.io/v1 Events)
  • use series.count instead of the deprecated count field (which is renamed to deprecatedCount and not permitted in new events.k8s.io/v1 Events)
  • use reportingController instead of the deprecated source.component field (which is renamed to deprecatedSource.component and not permitted in new events.k8s.io/v1 Events)
  • use reportingInstance instead of the deprecated source.host field (which is renamed to deprecatedSource.host and not permitted in new events.k8s.io/v1 Events)

The autoscaling/v2beta1 API version of HorizontalPodAutoscaler is no longer served as of v1.25.

• Migrate manifests and API clients to use the autoscaling/v2 API version, available since v1.23.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • targetAverageUtilization is replaced with target.averageUtilization and target.type: Utilization. See Autoscaling on multiple metrics and custom metrics.

The policy/v1beta1 API version of PodDisruptionBudget is no longer served as of v1.25.

• Migrate manifests and API clients to use the policy/v1 API version, available since v1.21.
• All existing persisted objects are accessible via the new API
• Notable changes in policy/v1:
  • an empty spec.selector ({}) written to a policy/v1 PodDisruptionBudget selects all pods in the namespace (in policy/v1beta1 an empty spec.selector selected no pods). An unset spec.selector selects no pods in either API version.

PodSecurityPolicy in the policy/v1beta1 API version is no longer served as of v1.25, and the PodSecurityPolicy admission controller will be removed.

Migrate to Pod Security Admission or a 3rd party admission webhook. For a migration guide, see Migrate from PodSecurityPolicy to the Built-In PodSecurity Admission Controller. For more information on the deprecation, see PodSecurityPolicy Deprecation: Past, Present, and Future.

RuntimeClass in the node.k8s.io/v1beta1 API version is no longer served as of v1.25.

• Migrate manifests and API clients to use the node.k8s.io/v1 API version, available since v1.20.
• All existing persisted objects are accessible via the new API
• No notable changes

The v1.22 release stopped serving the following deprecated API versions:

The admissionregistration.k8s.io/v1beta1 API version of MutatingWebhookConfiguration and ValidatingWebhookConfiguration is no longer served as of v1.22.

• Migrate manifests and API clients to use the admissionregistration.k8s.io/v1 API version, available since v1.16.
• All existing persisted objects are accessible via the new APIs
• Notable changes:
  • webhooks[*].failurePolicy default changed from Ignore to Fail for v1
  • webhooks[*].matchPolicy default changed from Exact to Equivalent for v1
  • webhooks[*].timeoutSeconds default changed from 30s to 10s for v1
  • webhooks[*].sideEffects default value is removed, and the field made required, and only None and NoneOnDryRun are permitted for v1
  • webhooks[*].admissionReviewVersions default value is removed and the field made required for v1 (supported versions for AdmissionReview are v1 and v1beta1)
  • webhooks[*].name must be unique in the list for objects created via admissionregistration.k8s.io/v1

The apiextensions.k8s.io/v1beta1 API version of CustomResourceDefinition is no longer served as of v1.22.

• Migrate manifests and API clients to use the apiextensions.k8s.io/v1 API version, available since v1.16.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • spec.scope is no longer defaulted to Namespaced and must be explicitly specified
  • spec.version is removed in v1; use spec.versions instead
  • spec.validation is removed in v1; use spec.versions[*].schema instead
  • spec.subresources is removed in v1; use spec.versions[*].subresources instead
  • spec.additionalPrinterColumns is removed in v1; use spec.versions[*].additionalPrinterColumns instead
  • spec.conversion.webhookClientConfig is moved to spec.conversion.webhook.clientConfig in v1
  • spec.conversion.conversionReviewVersions is moved to spec.conversion.webhook.conversionReviewVersions in v1
  • spec.versions[*].schema.openAPIV3Schema is now required when creating v1 CustomResourceDefinition objects, and must be a structural schema
  • spec.preserveUnknownFields: true is disallowed when creating v1 CustomResourceDefinition objects; it must be specified within schema definitions as x-kubernetes-preserve-unknown-fields: true
  • In additionalPrinterColumns items, the JSONPath field was renamed to jsonPath in v1 (fixes #66531)

The apiregistration.k8s.io/v1beta1 API version of APIService is no longer served as of v1.22.

• Migrate manifests and API clients to use the apiregistration.k8s.io/v1 API version, available since v1.10.
• All existing persisted objects are accessible via the new API
• No notable changes

The authentication.k8s.io/v1beta1 API version of TokenReview is no longer served as of v1.22.

• Migrate manifests and API clients to use the authentication.k8s.io/v1 API version, available since v1.6.
• No notable changes

The authorization.k8s.io/v1beta1 API version of LocalSubjectAccessReview, SelfSubjectAccessReview, SubjectAccessReview, and SelfSubjectRulesReview is no longer served as of v1.22.

• Migrate manifests and API clients to use the authorization.k8s.io/v1 API version, available since v1.6.
• Notable changes:
  • spec.group was renamed to spec.groups in v1 (fixes #32709)

The certificates.k8s.io/v1beta1 API version of CertificateSigningRequest is no longer served as of v1.22.

• Migrate manifests and API clients to use the certificates.k8s.io/v1 API version, available since v1.19.
• All existing persisted objects are accessible via the new API
• Notable changes in certificates.k8s.io/v1:
  • For API clients requesting certificates:
    • spec.signerName is now required (see known Kubernetes signers), and requests for kubernetes.io/legacy-unknown are not allowed to be created via the certificates.k8s.io/v1 API
    • spec.usages is now required, may not contain duplicate values, and must only contain known usages
  • For API clients approving or signing certificates:
    • status.conditions may not contain duplicate types
    • status.conditions[*].status is now required
    • status.certificate must be PEM-encoded, and contain only CERTIFICATE blocks

The coordination.k8s.io/v1beta1 API version of Lease is no longer served as of v1.22.

• Migrate manifests and API clients to use the coordination.k8s.io/v1 API version, available since v1.14.
• All existing persisted objects are accessible via the new API
• No notable changes

The extensions/v1beta1 and networking.k8s.io/v1beta1 API versions of Ingress is no longer served as of v1.22.

• Migrate manifests and API clients to use the networking.k8s.io/v1 API version, available since v1.19.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • spec.backend is renamed to spec.defaultBackend
  • The backend serviceName field is renamed to service.name
  • Numeric backend servicePort fields are renamed to service.port.number
  • String backend servicePort fields are renamed to service.port.name
  • pathType is now required for each specified path. Options are Prefix, Exact, and ImplementationSpecific. To match the undefined v1beta1 behavior, use ImplementationSpecific.

The networking.k8s.io/v1beta1 API version of IngressClass is no longer served as of v1.22.

• Migrate manifests and API clients to use the networking.k8s.io/v1 API version, available since v1.19.
• All existing persisted objects are accessible via the new API
• No notable changes

The rbac.authorization.k8s.io/v1beta1 API version of ClusterRole, ClusterRoleBinding, Role, and RoleBinding is no longer served as of v1.22.

• Migrate manifests and API clients to use the rbac.authorization.k8s.io/v1 API version, available since v1.8.
• All existing persisted objects are accessible via the new APIs
• No notable changes

The scheduling.k8s.io/v1beta1 API version of PriorityClass is no longer served as of v1.22.

• Migrate manifests and API clients to use the scheduling.k8s.io/v1 API version, available since v1.14.
• All existing persisted objects are accessible via the new API
• No notable changes

The storage.k8s.io/v1beta1 API version of CSIDriver, CSINode, StorageClass, and VolumeAttachment is no longer served as of v1.22.

• Migrate manifests and API clients to use the storage.k8s.io/v1 API version
  • CSIDriver is available in storage.k8s.io/v1 since v1.19.
  • CSINode is available in storage.k8s.io/v1 since v1.17
  • StorageClass is available in storage.k8s.io/v1 since v1.6
  • VolumeAttachment is available in storage.k8s.io/v1 v1.13
• All existing persisted objects are accessible via the new APIs
• No notable changes

The v1.16 release stopped serving the following deprecated API versions:

The extensions/v1beta1 API version of NetworkPolicy is no longer served as of v1.16.

• Migrate manifests and API clients to use the networking.k8s.io/v1 API version, available since v1.8.
• All existing persisted objects are accessible via the new API

The extensions/v1beta1 and apps/v1beta2 API versions of DaemonSet are no longer served as of v1.16.

• Migrate manifests and API clients to use the apps/v1 API version, available since v1.9.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • spec.templateGeneration is removed
  • spec.selector is now required and immutable after creation; use the existing template labels as the selector for seamless upgrades
  • spec.updateStrategy.type now defaults to RollingUpdate (the default in extensions/v1beta1 was OnDelete)

The extensions/v1beta1, apps/v1beta1, and apps/v1beta2 API versions of Deployment are no longer served as of v1.16.

• Migrate manifests and API clients to use the apps/v1 API version, available since v1.9.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • spec.rollbackTo is removed
  • spec.selector is now required and immutable after creation; use the existing template labels as the selector for seamless upgrades
  • spec.progressDeadlineSeconds now defaults to 600 seconds (the default in extensions/v1beta1 was no deadline)
  • spec.revisionHistoryLimit now defaults to 10 (the default in apps/v1beta1 was 2, the default in extensions/v1beta1 was to retain all)
  • maxSurge and maxUnavailable now default to 25% (the default in extensions/v1beta1 was 1)

The apps/v1beta1 and apps/v1beta2 API versions of StatefulSet are no longer served as of v1.16.

• Migrate manifests and API clients to use the apps/v1 API version, available since v1.9.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • spec.selector is now required and immutable after creation; use the existing template labels as the selector for seamless upgrades
  • spec.updateStrategy.type now defaults to RollingUpdate (the default in apps/v1beta1 was OnDelete)

The extensions/v1beta1, apps/v1beta1, and apps/v1beta2 API versions of ReplicaSet are no longer served as of v1.16.

• Migrate manifests and API clients to use the apps/v1 API version, available since v1.9.
• All existing persisted objects are accessible via the new API
• Notable changes:
  • spec.selector is now required and immutable after creation; use the existing template labels as the selector for seamless upgrades

The extensions/v1beta1 API version of PodSecurityPolicy is no longer served as of v1.16.

• Migrate manifests and API client to use the policy/v1beta1 API version, available since v1.10.
• Note that the policy/v1beta1 API version of PodSecurityPolicy will be removed in v1.25.

You can test your clusters by starting an API server with specific API versions disabled to simulate upcoming removals. Add the following flag to the API server startup arguments:

--runtime-config=<group>/<version>=false

For example:

--runtime-config=admissionregistration.k8s.io/v1beta1=false,apiextensions.k8s.io/v1beta1,...

Use client warnings, metrics, and audit information available in 1.19+ to locate use of deprecated APIs.

• Update custom integrations and controllers to call the non-deprecated APIs

• Change YAML files to reference the non-deprecated APIs

  You can use the kubectl convert command to automatically convert an existing object:

  kubectl convert -f <file> --output-version <group>/<version>.

  For example, to convert an older Deployment to apps/v1, you can run:

  kubectl convert -f ./my-deployment.yaml --output-version apps/v1

  This conversion may use non-ideal default values. To learn more about a specific resource, check the Kubernetes API reference.

  Note:

  The kubectl convert tool is not installed by default, although in fact it once was part of kubectl itself. For more details, you can read the deprecation and removal issue for the built-in subcommand.

  To learn how to set up kubectl convert on your computer, visit the page that is right for your operating system: Linux, macOS, or Windows.

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