CustomResourceDefinition [apiextensions.k8s.io/v1]
CustomResourceDefinition represents a resource that should be exposed on the API server. Its name MUST be in the format <.spec.name>.<.spec.group>.
Type
Required
spec
.spec
Description
CustomResourceDefinitionSpec describes how a user wants their resource to appear
Type
object
Required
group
names
scope
versions
Property | Type | Description |
---|---|---|
|
| CustomResourceConversion describes how to convert different versions of a CR. |
|
| group is the API group of the defined custom resource. The custom resources are served under |
|
| CustomResourceDefinitionNames indicates the names to serve this CustomResourceDefinition |
|
| preserveUnknownFields indicates that object fields which are not specified in the OpenAPI schema should be preserved when persisting to storage. apiVersion, kind, metadata and known fields inside metadata are always preserved. This field is deprecated in favor of setting |
|
| scope indicates whether the defined custom resource is cluster- or namespace-scoped. Allowed values are |
|
| versions is the list of all API versions of the defined custom resource. Version names are used to compute the order in which served versions are listed in API discovery. If the version string is “kube-like”, it will sort above non “kube-like” version strings, which are ordered lexicographically. “Kube-like” versions start with a “v”, then are followed by a number (the major version), then optionally the string “alpha” or “beta” and another number (the minor version). These are sorted first by GA > beta > alpha (where GA is a version with no suffix such as beta or alpha), and then by comparing major version, then minor version. An example sorted list of versions: v10, v2, v1, v11beta2, v10beta3, v3beta1, v12alpha1, v11alpha2, foo1, foo10. |
|
| CustomResourceDefinitionVersion describes a version for CRD. |
.spec.conversion
Description
CustomResourceConversion describes how to convert different versions of a CR.
Type
object
Required
strategy
Property | Type | Description |
---|---|---|
|
| strategy specifies how custom resources are converted between versions. Allowed values are: - |
|
| WebhookConversion describes how to call a conversion webhook |
.spec.conversion.webhook
Description
WebhookConversion describes how to call a conversion webhook
Type
object
Required
conversionReviewVersions
Property | Type | Description |
---|---|---|
|
| WebhookClientConfig contains the information to make a TLS connection with the webhook. |
|
| conversionReviewVersions is an ordered list of preferred |
.spec.conversion.webhook.clientConfig
Description
WebhookClientConfig contains the information to make a TLS connection with the webhook.
Type
object
Property | Type | Description |
---|---|---|
|
| caBundle is a PEM encoded CA bundle which will be used to validate the webhook’s server certificate. If unspecified, system trust roots on the apiserver are used. |
|
| ServiceReference holds a reference to Service.legacy.k8s.io |
|
| url gives the location of the webhook, in standard URL form ( The Please note that using The scheme must be “https”; the URL must begin with “https://“. A path is optional, and if present may be any string permissible in a URL. You may use the path to pass an arbitrary string to the webhook, for example, a cluster identifier. Attempting to use a user or basic auth e.g. “user:password@” is not allowed. Fragments (“#…”) and query parameters (“?…”) are not allowed, either. |
.spec.conversion.webhook.clientConfig.service
Description
ServiceReference holds a reference to Service.legacy.k8s.io
Type
object
Required
namespace
Property | Type | Description |
---|---|---|
|
| name is the name of the service. Required |
|
| namespace is the namespace of the service. Required |
|
| path is an optional URL path at which the webhook will be contacted. |
|
| port is an optional service port at which the webhook will be contacted. |
.spec.names
Description
CustomResourceDefinitionNames indicates the names to serve this CustomResourceDefinition
Type
object
Required
plural
kind
Property | Type | Description |
---|---|---|
|
| categories is a list of grouped resources this custom resource belongs to (e.g. ‘all’). This is published in API discovery documents, and used by clients to support invocations like |
|
| kind is the serialized kind of the resource. It is normally CamelCase and singular. Custom resource instances will use this value as the |
|
| listKind is the serialized kind of the list for this resource. Defaults to “ |
|
| plural is the plural name of the resource to serve. The custom resources are served under |
|
| shortNames are short names for the resource, exposed in API discovery documents, and used by clients to support invocations like |
|
| singular is the singular name of the resource. It must be all lowercase. Defaults to lowercased |
.spec.versions
Description
versions is the list of all API versions of the defined custom resource. Version names are used to compute the order in which served versions are listed in API discovery. If the version string is “kube-like”, it will sort above non “kube-like” version strings, which are ordered lexicographically. “Kube-like” versions start with a “v”, then are followed by a number (the major version), then optionally the string “alpha” or “beta” and another number (the minor version). These are sorted first by GA > beta > alpha (where GA is a version with no suffix such as beta or alpha), and then by comparing major version, then minor version. An example sorted list of versions: v10, v2, v1, v11beta2, v10beta3, v3beta1, v12alpha1, v11alpha2, foo1, foo10.
Type
array
.spec.versions[]
Description
CustomResourceDefinitionVersion describes a version for CRD.
Type
object
Required
name
served
storage
Property | Type | Description |
---|---|---|
|
| additionalPrinterColumns specifies additional columns returned in Table output. See for details. If no columns are specified, a single column displaying the age of the custom resource is used. |
|
| CustomResourceColumnDefinition specifies a column for server side printing. |
|
| deprecated indicates this version of the custom resource API is deprecated. When set to true, API requests to this version receive a warning header in the server response. Defaults to false. |
|
| deprecationWarning overrides the default warning returned to API clients. May only be set when |
| name is the version name, e.g. “v1”, “v2beta1”, etc. The custom resources are served under this version at | |
|
| CustomResourceValidation is a list of validation methods for CustomResources. |
|
| served is a flag enabling/disabling this version from being served via REST APIs |
|
| storage indicates this version should be used when persisting custom resources to storage. There must be exactly one version with storage=true. |
|
| CustomResourceSubresources defines the status and scale subresources for CustomResources. |
.spec.versions[].additionalPrinterColumns
additionalPrinterColumns specifies additional columns returned in Table output. See https://kubernetes.io/docs/reference/using-api/api-concepts/#receiving-resources-as-tables for details. If no columns are specified, a single column displaying the age of the custom resource is used.
Type
array
.spec.versions[].additionalPrinterColumns[]
Description
CustomResourceColumnDefinition specifies a column for server side printing.
Type
object
Required
name
type
jsonPath
Property | Type | Description |
---|---|---|
|
| description is a human readable description of this column. |
|
| format is an optional OpenAPI type definition for this column. The ‘name’ format is applied to the primary identifier column to assist in clients identifying column is the resource name. See for details. |
|
| jsonPath is a simple JSON path (i.e. with array notation) which is evaluated against each custom resource to produce the value for this column. |
|
| name is a human readable name for the column. |
|
| priority is an integer defining the relative importance of this column compared to others. Lower numbers are considered higher priority. Columns that may be omitted in limited space scenarios should be given a priority greater than 0. |
|
| type is an OpenAPI type definition for this column. See https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#data-types for details. |
.spec.versions[].schema
Description
CustomResourceValidation is a list of validation methods for CustomResources.
Type
object
Property | Type | Description |
---|---|---|
| `` | openAPIV3Schema is the OpenAPI v3 schema to use for validation and pruning. |
.spec.versions[].subresources
Description
CustomResourceSubresources defines the status and scale subresources for CustomResources.
Type
object
Property | Type | Description |
---|---|---|
|
| CustomResourceSubresourceScale defines how to serve the scale subresource for CustomResources. |
|
| CustomResourceSubresourceStatus defines how to serve the status subresource for CustomResources. Status is represented by the |
.spec.versions[].subresources.scale
Description
CustomResourceSubresourceScale defines how to serve the scale subresource for CustomResources.
Type
object
Required
specReplicasPath
statusReplicasPath
Property | Type | Description |
---|---|---|
|
| labelSelectorPath defines the JSON path inside of a custom resource that corresponds to Scale |
|
| specReplicasPath defines the JSON path inside of a custom resource that corresponds to Scale |
|
| statusReplicasPath defines the JSON path inside of a custom resource that corresponds to Scale |
.spec.versions[].subresources.status
Description
CustomResourceSubresourceStatus defines how to serve the status subresource for CustomResources. Status is represented by the .status
JSON path inside of a CustomResource. When set, * exposes a /status subresource for the custom resource * PUT requests to the /status subresource take a custom resource object, and ignore changes to anything except the status stanza * PUT/POST/PATCH requests to the custom resource ignore changes to the status stanza
Type
object
.status
Description
CustomResourceDefinitionStatus indicates the state of the CustomResourceDefinition
Type
object
Property | Type | Description |
---|---|---|
|
| CustomResourceDefinitionNames indicates the names to serve this CustomResourceDefinition |
|
| conditions indicate state for particular aspects of a CustomResourceDefinition |
|
| CustomResourceDefinitionCondition contains details for the current condition of this pod. |
|
| storedVersions lists all versions of CustomResources that were ever persisted. Tracking these versions allows a migration path for stored versions in etcd. The field is mutable so a migration controller can finish a migration to another version (ensuring no old objects are left in storage), and then remove the rest of the versions from this list. Versions may not be removed from |
.status.acceptedNames
Description
CustomResourceDefinitionNames indicates the names to serve this CustomResourceDefinition
Type
object
Required
plural
kind
Property | Type | Description |
---|---|---|
|
| categories is a list of grouped resources this custom resource belongs to (e.g. ‘all’). This is published in API discovery documents, and used by clients to support invocations like |
|
| kind is the serialized kind of the resource. It is normally CamelCase and singular. Custom resource instances will use this value as the |
|
| listKind is the serialized kind of the list for this resource. Defaults to “ |
|
| plural is the plural name of the resource to serve. The custom resources are served under |
|
| shortNames are short names for the resource, exposed in API discovery documents, and used by clients to support invocations like |
|
| singular is the singular name of the resource. It must be all lowercase. Defaults to lowercased |
.status.conditions
Description
conditions indicate state for particular aspects of a CustomResourceDefinition
Type
array
.status.conditions[]
Description
CustomResourceDefinitionCondition contains details for the current condition of this pod.
Type
object
Required
type
Property | Type | Description |
---|---|---|
| lastTransitionTime last time the condition transitioned from one status to another. | |
|
| message is a human-readable message indicating details about last transition. |
|
| reason is a unique, one-word, CamelCase reason for the condition’s last transition. |
|
| status is the status of the condition. Can be True, False, Unknown. |
|
| type is the type of the condition. Types include Established, NamesAccepted and Terminating. |
API endpoints
The following API endpoints are available:
/apis/apiextensions.k8s.io/v1/customresourcedefinitions
DELETE
: delete collection of CustomResourceDefinitionGET
: list or watch objects of kind CustomResourceDefinitionPOST
: create a CustomResourceDefinition
/apis/apiextensions.k8s.io/v1/customresourcedefinitions/{name}
DELETE
: delete a CustomResourceDefinitionGET
: read the specified CustomResourceDefinitionPATCH
: partially update the specified CustomResourceDefinitionPUT
: replace the specified CustomResourceDefinition
/apis/apiextensions.k8s.io/v1/customresourcedefinitions/{name}/status
GET
: read status of the specified CustomResourceDefinitionPATCH
: partially update status of the specified CustomResourceDefinitionPUT
: replace status of the specified CustomResourceDefinition
HTTP method
DELETE
Description
delete collection of CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| The continue option should be set when retrieving more results from the server. Since this value is server defined, clients may only use the continue value from a previous query result with identical query parameters (except for the value of continue) and the server may reject a continue value it does not recognize. If the specified continue value is no longer valid whether due to expiration (generally five to fifteen minutes) or a configuration change on the server, the server will respond with a 410 ResourceExpired error together with a continue token. If the client needs a consistent list, it must restart their list without the continue field. Otherwise, the client may send another list request with the token received with the 410 error, the server will respond with a list starting from the next key, but from the latest snapshot, which is inconsistent from the previous list results - objects that are created, modified, or deleted after the first list request will be included in the response, as long as their keys are after the “next key”. This field is not supported when watch is true. Clients may start a watch from the last resourceVersion value returned by the server and not miss any modifications. |
|
| When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed |
|
| A selector to restrict the list of returned objects by their fields. Defaults to everything. |
|
| The duration in seconds before the object should be deleted. Value must be non-negative integer. The value zero indicates delete immediately. If this value is nil, the default grace period for the specified type will be used. Defaults to a per object value if not specified. zero means delete immediately. |
|
| A selector to restrict the list of returned objects by their labels. Defaults to everything. |
| limit is a maximum number of responses to return for a list call. If more items exist, the server will set the The server guarantees that the objects returned when using continue will be identical to issuing a single list call without a limit - that is, no objects created, modified, or deleted after the first request is issued will be included in any subsequent continued requests. This is sometimes referred to as a consistent snapshot, and ensures that a client that is using limit to receive smaller chunks of a very large result can ensure they see all possible objects. If objects are updated during a chunked list the version of the object that was present at the time the first list result was calculated is returned. | |
|
| Deprecated: please use the PropagationPolicy, this field will be deprecated in 1.7. Should the dependent objects be orphaned. If true/false, the “orphan” finalizer will be added to/removed from the object’s finalizers list. Either this field or PropagationPolicy may be set, but not both. |
|
| Whether and how garbage collection will be performed. Either this field or OrphanDependents may be set, but not both. The default policy is decided by the existing finalizer set in the metadata.finalizers and the resource-specific default policy. Acceptable values are: ‘Orphan’ - orphan the dependents; ‘Background’ - allow the garbage collector to delete the dependents in the background; ‘Foreground’ - a cascading policy that deletes all dependents in the foreground. |
|
| resourceVersion sets a constraint on what resource versions a request may be served from. See https://kubernetes.io/docs/reference/using-api/api-concepts/#resource-versions for details. Defaults to unset |
|
| resourceVersionMatch determines how resourceVersion is applied to list calls. It is highly recommended that resourceVersionMatch be set for list calls where resourceVersion is set See for details. Defaults to unset |
|
| Timeout for the list/watch call. This limits the duration of the call, regardless of any activity or inactivity. |
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
GET
Description
list or watch objects of kind CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| allowWatchBookmarks requests watch events with type “BOOKMARK”. Servers that do not implement bookmarks may ignore this flag and bookmarks are sent at the server’s discretion. Clients should not assume bookmarks are returned at any specific interval, nor may they assume the server will send any BOOKMARK event during a session. If this is not a watch, this field is ignored. If the feature gate WatchBookmarks is not enabled in apiserver, this field is ignored. |
|
| The continue option should be set when retrieving more results from the server. Since this value is server defined, clients may only use the continue value from a previous query result with identical query parameters (except for the value of continue) and the server may reject a continue value it does not recognize. If the specified continue value is no longer valid whether due to expiration (generally five to fifteen minutes) or a configuration change on the server, the server will respond with a 410 ResourceExpired error together with a continue token. If the client needs a consistent list, it must restart their list without the continue field. Otherwise, the client may send another list request with the token received with the 410 error, the server will respond with a list starting from the next key, but from the latest snapshot, which is inconsistent from the previous list results - objects that are created, modified, or deleted after the first list request will be included in the response, as long as their keys are after the “next key”. This field is not supported when watch is true. Clients may start a watch from the last resourceVersion value returned by the server and not miss any modifications. |
|
| A selector to restrict the list of returned objects by their fields. Defaults to everything. |
|
| A selector to restrict the list of returned objects by their labels. Defaults to everything. |
|
| limit is a maximum number of responses to return for a list call. If more items exist, the server will set the The server guarantees that the objects returned when using continue will be identical to issuing a single list call without a limit - that is, no objects created, modified, or deleted after the first request is issued will be included in any subsequent continued requests. This is sometimes referred to as a consistent snapshot, and ensures that a client that is using limit to receive smaller chunks of a very large result can ensure they see all possible objects. If objects are updated during a chunked list the version of the object that was present at the time the first list result was calculated is returned. |
|
| resourceVersion sets a constraint on what resource versions a request may be served from. See https://kubernetes.io/docs/reference/using-api/api-concepts/#resource-versions for details. Defaults to unset |
|
| resourceVersionMatch determines how resourceVersion is applied to list calls. It is highly recommended that resourceVersionMatch be set for list calls where resourceVersion is set See for details. Defaults to unset |
|
| Timeout for the list/watch call. This limits the duration of the call, regardless of any activity or inactivity. |
|
| Watch for changes to the described resources and return them as a stream of add, update, and remove notifications. Specify resourceVersion. |
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
POST
Description
create a CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed |
|
| fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by . |
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |
Parameter | Type | Description |
---|---|---|
|
| name of the CustomResourceDefinition |
Parameter | Type | Description |
---|---|---|
|
| If ‘true’, then the output is pretty printed. |
HTTP method
DELETE
Description
delete a CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed |
|
| The duration in seconds before the object should be deleted. Value must be non-negative integer. The value zero indicates delete immediately. If this value is nil, the default grace period for the specified type will be used. Defaults to a per object value if not specified. zero means delete immediately. |
|
| Deprecated: please use the PropagationPolicy, this field will be deprecated in 1.7. Should the dependent objects be orphaned. If true/false, the “orphan” finalizer will be added to/removed from the object’s finalizers list. Either this field or PropagationPolicy may be set, but not both. |
|
| Whether and how garbage collection will be performed. Either this field or OrphanDependents may be set, but not both. The default policy is decided by the existing finalizer set in the metadata.finalizers and the resource-specific default policy. Acceptable values are: ‘Orphan’ - orphan the dependents; ‘Background’ - allow the garbage collector to delete the dependents in the background; ‘Foreground’ - a cascading policy that deletes all dependents in the foreground. |
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
GET
Description
read the specified CustomResourceDefinition
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
PATCH
Description
partially update the specified CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
PUT
Description
replace the specified CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed |
|
| fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by . |
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |
Parameter | Type | Description |
---|---|---|
|
| name of the CustomResourceDefinition |
Parameter | Type | Description |
---|---|---|
|
| If ‘true’, then the output is pretty printed. |
HTTP method
GET
Description
read status of the specified CustomResourceDefinition
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
PATCH
Description
partially update status of the specified CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed |
|
| fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by . This field is required for apply requests (application/apply-patch) but optional for non-apply patch types (JsonPatch, MergePatch, StrategicMergePatch). |
|
| Force is going to “force” Apply requests. It means user will re-acquire conflicting fields owned by other people. Force flag must be unset for non-apply patch requests. |
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |
HTTP method
PUT
Description
replace status of the specified CustomResourceDefinition
Parameter | Type | Description |
---|---|---|
|
| When present, indicates that modifications should not be persisted. An invalid or unrecognized dryRun directive will result in an error response and no further processing of the request. Valid values are: - All: all dry run stages will be processed |
|
| fieldManager is a name associated with the actor or entity that is making these changes. The value must be less than or 128 characters long, and only contain printable characters, as defined by https://golang.org/pkg/unicode/#IsPrint. |
Parameter | Type | Description |
---|---|---|
|
HTTP code | Reponse body |
---|---|
200 - OK |