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RuntimeClass [node.k8s.io/v1] - Node <strong>api</strong>s | <strong>api</strong> reference | OKD 4.15
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RuntimeClass [node.k8s.io/v1]

Description

RuntimeClass defines a class of container runtime supported in the cluster. The RuntimeClass is used to determine which container runtime is used to run all containers in a pod. RuntimeClasses are manually defined by a user or cluster provisioner, and referenced in the PodSpec. The Kubelet is responsible for resolving the RuntimeClassName reference before running the pod. For more details, see https://kubernetes.io/docs/concepts/containers/runtime-class/

Type

object

Required

  • handler

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

handler

string

handler specifies the underlying runtime and configuration that the CRI implementation will use to handle pods of this class. The possible values are specific to the node & CRI configuration. It is assumed that all handlers are available on every node, and handlers of the same name are equivalent on every node. For example, a handler called "runc" might specify that the runc OCI runtime (using native Linux containers) will be used to run the containers in a pod. The Handler must be lowercase, conform to the DNS Label (RFC 1123) requirements, and is immutable.

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

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

overhead

object

Overhead structure represents the resource overhead associated with running a pod.

scheduling

object

Scheduling specifies the scheduling constraints for nodes supporting a RuntimeClass.

.overhead

Description

Overhead structure represents the resource overhead associated with running a pod.

Type

object

Property Type Description

podFixed

object (Quantity)

podFixed represents the fixed resource overhead associated with running a pod.

.scheduling

Description

Scheduling specifies the scheduling constraints for nodes supporting a RuntimeClass.

Type

object

Property Type Description

nodeSelector

object (string)

nodeSelector lists labels that must be present on nodes that support this RuntimeClass. Pods using this RuntimeClass can only be scheduled to a node matched by this selector. The RuntimeClass nodeSelector is merged with a pod’s existing nodeSelector. Any conflicts will cause the pod to be rejected in admission.

tolerations

array (Toleration)

tolerations are appended (excluding duplicates) to pods running with this RuntimeClass during admission, effectively unioning the set of nodes tolerated by the pod and the RuntimeClass.

api endpoints

The following api endpoints are available:

  • /apis/node.k8s.io/v1/runtimeclasses

    • DELETE: delete collection of RuntimeClass

    • GET: list or watch objects of kind RuntimeClass

    • POST: create a RuntimeClass

  • /apis/node.k8s.io/v1/watch/runtimeclasses

    • GET: watch individual changes to a list of RuntimeClass. deprecated: use the 'watch' parameter with a list operation instead.

  • /apis/node.k8s.io/v1/runtimeclasses/{name}

    • DELETE: delete a RuntimeClass

    • GET: read the specified RuntimeClass

    • PATCH: partially update the specified RuntimeClass

    • PUT: replace the specified RuntimeClass

  • /apis/node.k8s.io/v1/watch/runtimeclasses/{name}

    • GET: watch changes to an object of kind RuntimeClass. deprecated: use the 'watch' parameter with a list operation instead, filtered to a single item with the 'fieldSelector' parameter.

/apis/node.k8s.io/v1/runtimeclasses

HTTP method

DELETE

Description

delete collection of RuntimeClass

Table 1. 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 2. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

401 - Unauthorized

Empty
HTTP method

GET

Description

list or watch objects of kind RuntimeClass

Table 3. HTTP responses
HTTP code Reponse body

200 - OK

RuntimeClassList schema

401 - Unauthorized

Empty
HTTP method

POST

Description

create a RuntimeClass

Table 4. 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 5. Body parameters
Parameter Type Description

body

RuntimeClass schema
Table 6. HTTP responses
HTTP code Reponse body

200 - OK

RuntimeClass schema

201 - Created

RuntimeClass schema

202 - Accepted

RuntimeClass schema

401 - Unauthorized

Empty

/apis/node.k8s.io/v1/watch/runtimeclasses

HTTP method

GET

Description

watch individual changes to a list of RuntimeClass. deprecated: use the 'watch' parameter with a list operation instead.

Table 7. HTTP responses
HTTP code Reponse body

200 - OK

WatchEvent schema

401 - Unauthorized

Empty

/apis/node.k8s.io/v1/runtimeclasses/{name}

Table 8. Global path parameters
Parameter Type Description

name

string

name of the RuntimeClass
HTTP method

DELETE

Description

delete a RuntimeClass

Table 9. 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 10. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

202 - Accepted

Status schema

401 - Unauthorized

Empty
HTTP method

GET

Description

read the specified RuntimeClass

Table 11. HTTP responses
HTTP code Reponse body

200 - OK

RuntimeClass schema

401 - Unauthorized

Empty
HTTP method

PATCH

Description

partially update the specified RuntimeClass

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. HTTP responses
HTTP code Reponse body

200 - OK

RuntimeClass schema

201 - Created

RuntimeClass schema

401 - Unauthorized

Empty
HTTP method

PUT

Description

replace the specified RuntimeClass

Table 14. 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 15. Body parameters
Parameter Type Description

body

RuntimeClass schema
Table 16. HTTP responses
HTTP code Reponse body

200 - OK

RuntimeClass schema

201 - Created

RuntimeClass schema

401 - Unauthorized

Empty

/apis/node.k8s.io/v1/watch/runtimeclasses/{name}

Table 17. Global path parameters
Parameter Type Description

name

string

name of the RuntimeClass
HTTP method

GET

Description

watch changes to an object of kind RuntimeClass. deprecated: use the 'watch' parameter with a list operation instead, filtered to a single item with the 'fieldSelector' parameter.

Table 18. HTTP responses
HTTP code Reponse body

200 - OK

WatchEvent schema

401 - Unauthorized

Empty