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Specification

Property Type Description

apiVersion

string

APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources

kind

string

Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

metadata

ObjectMeta

Standard object’s metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

spec

object

ExtensionConfigSpec is the desired state of the ExtensionConfig

status

object

ExtensionConfigStatus is the current state of the ExtensionConfig

.spec

Description

ExtensionConfigSpec is the desired state of the ExtensionConfig

Type

object

Required
  • clientConfig

Property Type Description

clientConfig

object

ClientConfig defines how to communicate with the Extension server.

namespaceSelector

object

NamespaceSelector decides whether to call the hook for an object based on whether the namespace for that object matches the selector. Defaults to the empty LabelSelector, which matches all objects.

settings

object (string)

Settings defines key value pairs to be passed to all calls to all supported RuntimeExtensions. Note: Settings can be overridden on the ClusterClass.

.spec.clientConfig

Description

ClientConfig defines how to communicate with the Extension server.

Type

object

Property Type Description

caBundle

string

CABundle is a PEM encoded CA bundle which will be used to validate the Extension server’s server certificate.

service

object

Service is a reference to the Kubernetes service for the Extension server. Note: Exactly one of url or service must be specified.

If the Extension server is running within a cluster, then you should use service.

url

string

URL gives the location of the Extension server, in standard URL form (scheme://host:port/path). Note: Exactly one of url or service must be specified.

The scheme must be "https".

The host should not refer to a service running in the cluster; use the service field instead.

A path is optional, and if present may be any string permissible in a URL. If a path is set it will be used as prefix to the hook-specific path.

Attempting to use a user or basic auth e.g. "user:password@" is not allowed. Fragments ("#…​") and query parameters ("?…​") are not allowed either.

.spec.clientConfig.service

Description

Service is a reference to the Kubernetes service for the Extension server. Note: Exactly one of url or service must be specified.

If the Extension server is running within a cluster, then you should use service.

Type

object

Required
  • name

  • namespace

Property Type Description

name

string

Name is the name of the service.

namespace

string

Namespace is the namespace of the service.

path

string

Path is an optional URL path and if present may be any string permissible in a URL. If a path is set it will be used as prefix to the hook-specific path.

port

integer

Port is the port on the service that’s hosting the Extension server. Defaults to 443. Port should be a valid port number (1-65535, inclusive).

.spec.namespaceSelector

Description

NamespaceSelector decides whether to call the hook for an object based on whether the namespace for that object matches the selector. Defaults to the empty LabelSelector, which matches all objects.

Type

object

Property Type Description

matchExpressions

array

matchExpressions is a list of label selector requirements. The requirements are ANDed.

matchExpressions[]

object

A label selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

matchLabels

object (string)

matchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels map is equivalent to an element of matchExpressions, whose key field is "key", the operator is "In", and the values array contains only "value". The requirements are ANDed.

.spec.namespaceSelector.matchExpressions

Description

matchExpressions is a list of label selector requirements. The requirements are ANDed.

Type

array

.spec.namespaceSelector.matchExpressions[]

Description

A label selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

Type

object

Required
  • key

  • operator

Property Type Description

key

string

key is the label key that the selector applies to.

operator

string

operator represents a key’s relationship to a set of values. Valid operators are In, NotIn, Exists and DoesNotExist.

values

array (string)

values is an array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. This array is replaced during a strategic merge patch.

.status

Description

ExtensionConfigStatus is the current state of the ExtensionConfig

Type

object

Property Type Description

conditions

array

Conditions define the current service state of the ExtensionConfig.

conditions[]

object

Condition defines an observation of a Cluster API resource operational state.

handlers

array

Handlers defines the current ExtensionHandlers supported by an Extension.

handlers[]

object

ExtensionHandler specifies the details of a handler for a particular runtime hook registered by an Extension server.

.status.conditions

Description

Conditions define the current service state of the ExtensionConfig.

Type

array

.status.conditions[]

Description

Condition defines an observation of a Cluster API resource operational state.

Type

object

Required
  • lastTransitionTime

  • status

  • type

Property Type Description

lastTransitionTime

string

Last time the condition transitioned from one status to another. This should be when the underlying condition changed. If that is not known, then using the time when the API field changed is acceptable.

message

string

A human readable message indicating details about the transition. This field may be empty.

reason

string

The reason for the condition’s last transition in CamelCase. The specific API may choose whether or not this field is considered a guaranteed API. This field may not be empty.

severity

string

Severity provides an explicit classification of Reason code, so the users or machines can immediately understand the current situation and act accordingly. The Severity field MUST be set only when Status=False.

status

string

Status of the condition, one of True, False, Unknown.

type

string

Type of condition in CamelCase or in foo.example.com/CamelCase. Many .condition.type values are consistent across resources like Available, but because arbitrary conditions can be useful (see .node.status.conditions), the ability to deconflict is important.

.status.handlers

Description

Handlers defines the current ExtensionHandlers supported by an Extension.

Type

array

.status.handlers[]

Description

ExtensionHandler specifies the details of a handler for a particular runtime hook registered by an Extension server.

Type

object

Required
  • name

  • requestHook

Property Type Description

failurePolicy

string

FailurePolicy defines how failures in calls to the ExtensionHandler should be handled by a client. Defaults to Fail if not set.

name

string

Name is the unique name of the ExtensionHandler.

requestHook

object

RequestHook defines the versioned runtime hook which this ExtensionHandler serves.

timeoutSeconds

integer

TimeoutSeconds defines the timeout duration for client calls to the ExtensionHandler. Defaults to 10 is not set.

.status.handlers[].requestHook

Description

RequestHook defines the versioned runtime hook which this ExtensionHandler serves.

Type

object

Required
  • apiVersion

  • hook

Property Type Description

apiVersion

string

APIVersion is the group and version of the Hook.

hook

string

Hook is the name of the hook.

API endpoints

The following API endpoints are available:

  • /apis/runtime.cluster.x-k8s.io/v1alpha1/extensionconfigs

    • DELETE: delete collection of ExtensionConfig

    • GET: list objects of kind ExtensionConfig

    • POST: create an ExtensionConfig

  • /apis/runtime.cluster.x-k8s.io/v1alpha1/extensionconfigs/{name}

    • DELETE: delete an ExtensionConfig

    • GET: read the specified ExtensionConfig

    • PATCH: partially update the specified ExtensionConfig

    • PUT: replace the specified ExtensionConfig

  • /apis/runtime.cluster.x-k8s.io/v1alpha1/extensionconfigs/{name}/status

    • GET: read status of the specified ExtensionConfig

    • PATCH: partially update status of the specified ExtensionConfig

    • PUT: replace status of the specified ExtensionConfig

/apis/runtime.cluster.x-k8s.io/v1alpha1/extensionconfigs

HTTP method

DELETE

Description

delete collection of ExtensionConfig

Table 1. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

401 - Unauthorized

Empty

HTTP method

GET

Description

list objects of kind ExtensionConfig

Table 2. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfigList schema

401 - Unauthorized

Empty

HTTP method

POST

Description

create an ExtensionConfig

Table 3. Query parameters
Parameter Type Description

dryRun

string

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

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 4. Body parameters
Parameter Type Description

body

ExtensionConfig schema

Table 5. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

201 - Created

ExtensionConfig schema

202 - Accepted

ExtensionConfig schema

401 - Unauthorized

Empty

/apis/runtime.cluster.x-k8s.io/v1alpha1/extensionconfigs/{name}

Table 6. Global path parameters
Parameter Type Description

name

string

name of the ExtensionConfig

HTTP method

DELETE

Description

delete an ExtensionConfig

Table 7. Query parameters
Parameter Type Description

dryRun

string

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

Table 8. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

202 - Accepted

Status schema

401 - Unauthorized

Empty

HTTP method

GET

Description

read the specified ExtensionConfig

Table 9. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update the specified ExtensionConfig

Table 10. Query parameters
Parameter Type Description

dryRun

string

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

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 11. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace the specified ExtensionConfig

Table 12. Query parameters
Parameter Type Description

dryRun

string

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

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 13. Body parameters
Parameter Type Description

body

ExtensionConfig schema

Table 14. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

201 - Created

ExtensionConfig schema

401 - Unauthorized

Empty

/apis/runtime.cluster.x-k8s.io/v1alpha1/extensionconfigs/{name}/status

Table 15. Global path parameters
Parameter Type Description

name

string

name of the ExtensionConfig

HTTP method

GET

Description

read status of the specified ExtensionConfig

Table 16. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update status of the specified ExtensionConfig

Table 17. Query parameters
Parameter Type Description

dryRun

string

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

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 18. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace status of the specified ExtensionConfig

Table 19. Query parameters
Parameter Type Description

dryRun

string

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

fieldValidation

string

fieldValidation instructs the server on how to handle objects in the request (POST/PUT/PATCH) containing unknown or duplicate fields. Valid values are: - Ignore: This will ignore any unknown fields that are silently dropped from the object, and will ignore all but the last duplicate field that the decoder encounters. This is the default behavior prior to v1.23. - Warn: This will send a warning via the standard warning response header for each unknown field that is dropped from the object, and for each duplicate field that is encountered. The request will still succeed if there are no other errors, and will only persist the last of any duplicate fields. This is the default in v1.23+ - Strict: This will fail the request with a BadRequest error if any unknown fields would be dropped from the object, or if any duplicate fields are present. The error returned from the server will contain all unknown and duplicate fields encountered.

Table 20. Body parameters
Parameter Type Description

body

ExtensionConfig schema

Table 21. HTTP responses
HTTP code Reponse body

200 - OK

ExtensionConfig schema

201 - Created

ExtensionConfig schema

401 - Unauthorized

Empty