endpointSlice [discovery.k8s.io/v1] - Network APIs | API reference

Specification
API endpoints

Description

endpointSlice represents a set of service endpoints. Most endpointSlices are created by the endpointSlice controller to represent the Pods selected by Service objects. For a given service there may be multiple endpointSlice objects which must be joined to produce the full set of endpoints; you can find all of the slices for a given service by listing endpointSlices in the service’s namespace whose kubernetes.io/service-name label contains the service’s name.

Type

object

Required

addressType
endpoints

Specification

Property Type Description

Property	Type	Description
`addressType`	`string`	addressType specifies the type of address carried by this endpointSlice. All addresses in this slice must be the same type. This field is immutable after creation. The following address types are currently supported: * IPv4: Represents an IPv4 Address. * IPv6: Represents an IPv6 Address. * FQDN: Represents a Fully Qualified Domain Name. (Deprecated) The endpointSlice controller only generates, and kube-proxy only processes, slices of addressType "IPv4" and "IPv6". No semantics are defined for the "FQDN" type. Possible enum values: - `"FQDN"` represents a FQDN. - `"IPv4"` represents an IPv4 Address. - `"IPv6"` represents an IPv6 Address.
`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
`endpoints`	`array`	endpoints is a list of unique endpoints in this slice. each slice may include a maximum of 1000 endpoints.
`endpoints[]`	`object`	endpoint represents a single logical "backend" implementing a service.
`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.
`ports`	`array`	ports specifies the list of network ports exposed by each endpoint in this slice. each port must have a unique name. each slice may include a maximum of 100 ports. Services always have at least 1 port, so endpointSlices generated by the endpointSlice controller will likewise always have at least 1 port. endpointSlices used for other purposes may have an empty ports list.
`ports[]`	`object`	endpointPort represents a Port used by an endpointSlice

addressType

string

addressType specifies the type of address carried by this endpointSlice. All addresses in this slice must be the same type. This field is immutable after creation. The following address types are currently supported: * IPv4: Represents an IPv4 Address. * IPv6: Represents an IPv6 Address. * FQDN: Represents a Fully Qualified Domain Name. (Deprecated) The endpointSlice controller only generates, and kube-proxy only processes, slices of addressType "IPv4" and "IPv6". No semantics are defined for the "FQDN" type.

Possible enum values: - "FQDN" represents a FQDN. - "IPv4" represents an IPv4 Address. - "IPv6" represents an IPv6 Address.

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

endpoints

array

endpoints is a list of unique endpoints in this slice. each slice may include a maximum of 1000 endpoints.

endpoints[]

object

endpoint represents a single logical "backend" implementing a service.

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.

ports

array

ports specifies the list of network ports exposed by each endpoint in this slice. each port must have a unique name. each slice may include a maximum of 100 ports. Services always have at least 1 port, so endpointSlices generated by the endpointSlice controller will likewise always have at least 1 port. endpointSlices used for other purposes may have an empty ports list.

ports[]

object

endpointPort represents a Port used by an endpointSlice

.endpoints

Description: endpoints is a list of unique endpoints in this slice. each slice may include a maximum of 1000 endpoints.
Type: array

.endpoints[]

Description

endpoint represents a single logical "backend" implementing a service.

Type

object

Required

addresses

Property Type Description

Property	Type	Description
`addresses`	`array (string)`	addresses of this endpoint. For endpointSlices of addressType "IPv4" or "IPv6", the values are IP addresses in canonical form. The syntax and semantics of other addressType values are not defined. This must contain at least one address but no more than 100. endpointSlices generated by the endpointSlice controller will always have exactly 1 address. No semantics are defined for additional addresses beyond the first, and kube-proxy does not look at them.
`conditions`	`object`	endpointConditions represents the current condition of an endpoint.
`deprecatedTopology`	`object (string)`	deprecatedTopology contains topology information part of the v1beta1 API. This field is deprecated, and will be removed when the v1beta1 API is removed (no sooner than kubernetes v1.24). While this field can hold values, it is not writable through the v1 API, and any attempts to write to it will be silently ignored. Topology information can be found in the zone and nodeName fields instead.
`hints`	`object`	endpointHints provides hints describing how an endpoint should be consumed.
`hostname`	`string`	hostname of this endpoint. This field may be used by consumers of endpoints to distinguish endpoints from each other (e.g. in DNS names). Multiple endpoints which use the same hostname should be considered fungible (e.g. multiple A values in DNS). Must be lowercase and pass DNS Label (RFC 1123) validation.
`nodeName`	`string`	nodeName represents the name of the Node hosting this endpoint. This can be used to determine endpoints local to a Node.
`targetRef`	`ObjectReference`	targetRef is a reference to a Kubernetes object that represents this endpoint.
`zone`	`string`	zone is the name of the Zone this endpoint exists in.

addresses

array (string)

addresses of this endpoint. For endpointSlices of addressType "IPv4" or "IPv6", the values are IP addresses in canonical form. The syntax and semantics of other addressType values are not defined. This must contain at least one address but no more than 100. endpointSlices generated by the endpointSlice controller will always have exactly 1 address. No semantics are defined for additional addresses beyond the first, and kube-proxy does not look at them.

conditions

object

endpointConditions represents the current condition of an endpoint.

deprecatedTopology

object (string)

deprecatedTopology contains topology information part of the v1beta1 API. This field is deprecated, and will be removed when the v1beta1 API is removed (no sooner than kubernetes v1.24). While this field can hold values, it is not writable through the v1 API, and any attempts to write to it will be silently ignored. Topology information can be found in the zone and nodeName fields instead.

hints

object

endpointHints provides hints describing how an endpoint should be consumed.

hostname

string

hostname of this endpoint. This field may be used by consumers of endpoints to distinguish endpoints from each other (e.g. in DNS names). Multiple endpoints which use the same hostname should be considered fungible (e.g. multiple A values in DNS). Must be lowercase and pass DNS Label (RFC 1123) validation.

nodeName

string

nodeName represents the name of the Node hosting this endpoint. This can be used to determine endpoints local to a Node.

targetRef

ObjectReference

targetRef is a reference to a Kubernetes object that represents this endpoint.

zone

string

zone is the name of the Zone this endpoint exists in.

.endpoints[].conditions

Description: endpointConditions represents the current condition of an endpoint.
Type: object

Property Type Description

Property	Type	Description
`ready`	`boolean`	ready indicates that this endpoint is ready to receive traffic, according to whatever system is managing the endpoint. A nil value should be interpreted as "true". In general, an endpoint should be marked ready if it is serving and not terminating, though this can be overridden in some cases, such as when the associated Service has set the publishNotReadyAddresses flag.
`serving`	`boolean`	serving indicates that this endpoint is able to receive traffic, according to whatever system is managing the endpoint. For endpoints backed by pods, the endpointSlice controller will mark the endpoint as serving if the pod’s Ready condition is True. A nil value should be interpreted as "true".
`terminating`	`boolean`	terminating indicates that this endpoint is terminating. A nil value should be interpreted as "false".

ready

boolean

ready indicates that this endpoint is ready to receive traffic, according to whatever system is managing the endpoint. A nil value should be interpreted as "true". In general, an endpoint should be marked ready if it is serving and not terminating, though this can be overridden in some cases, such as when the associated Service has set the publishNotReadyAddresses flag.

serving

boolean

serving indicates that this endpoint is able to receive traffic, according to whatever system is managing the endpoint. For endpoints backed by pods, the endpointSlice controller will mark the endpoint as serving if the pod’s Ready condition is True. A nil value should be interpreted as "true".

terminating

boolean

terminating indicates that this endpoint is terminating. A nil value should be interpreted as "false".

.endpoints[].hints

Description: endpointHints provides hints describing how an endpoint should be consumed.
Type: object

Property Type Description

Property	Type	Description
`forNodes`	`array`	forNodes indicates the node(s) this endpoint should be consumed by when using topology aware routing. May contain a maximum of 8 entries. This is an Alpha feature and is only used when the PreferSameTrafficDistribution feature gate is enabled.
`forNodes[]`	`object`	ForNode provides information about which nodes should consume this endpoint.
`forZones`	`array`	forZones indicates the zone(s) this endpoint should be consumed by when using topology aware routing. May contain a maximum of 8 entries.
`forZones[]`	`object`	ForZone provides information about which zones should consume this endpoint.

forNodes

array

forNodes indicates the node(s) this endpoint should be consumed by when using topology aware routing. May contain a maximum of 8 entries. This is an Alpha feature and is only used when the PreferSameTrafficDistribution feature gate is enabled.

forNodes[]

object

ForNode provides information about which nodes should consume this endpoint.

forZones

array

forZones indicates the zone(s) this endpoint should be consumed by when using topology aware routing. May contain a maximum of 8 entries.

forZones[]

object

ForZone provides information about which zones should consume this endpoint.

.endpoints[].hints.forNodes

Description: forNodes indicates the node(s) this endpoint should be consumed by when using topology aware routing. May contain a maximum of 8 entries. This is an Alpha feature and is only used when the PreferSameTrafficDistribution feature gate is enabled.
Type: array

.endpoints[].hints.forNodes[]

Description

ForNode provides information about which nodes should consume this endpoint.

Type

object

Required

name

Property Type Description

Property	Type	Description
`name`	`string`	name represents the name of the node.

name

string

name represents the name of the node.

.endpoints[].hints.forZones

Description: forZones indicates the zone(s) this endpoint should be consumed by when using topology aware routing. May contain a maximum of 8 entries.
Type: array

.endpoints[].hints.forZones[]

Description

ForZone provides information about which zones should consume this endpoint.

Type

object

Required

name

Property Type Description

Property	Type	Description
`name`	`string`	name represents the name of the zone.

name

string

name represents the name of the zone.

.ports

Description: ports specifies the list of network ports exposed by each endpoint in this slice. each port must have a unique name. each slice may include a maximum of 100 ports. Services always have at least 1 port, so endpointSlices generated by the endpointSlice controller will likewise always have at least 1 port. endpointSlices used for other purposes may have an empty ports list.
Type: array

.ports[]

Description: endpointPort represents a Port used by an endpointSlice
Type: object

Property Type Description

Property	Type	Description
`appProtocol`	`string`	The application protocol for this port. This is used as a hint for implementations to offer richer behavior for protocols that they understand. This field follows standard Kubernetes label syntax. Valid values are either: * Un-prefixed protocol names - reserved for IANA standard service names (as per RFC-6335 and https://www.iana.org/assignments/service-names). * Kubernetes-defined prefixed names: * 'kubernetes.io/h2c' - HTTP/2 prior knowledge over cleartext as described in https://www.rfc-editor.org/rfc/rfc9113.html#name-starting-http-2-with-prior- * 'kubernetes.io/ws' - WebSocket over cleartext as described in https://www.rfc-editor.org/rfc/rfc6455 * 'kubernetes.io/wss' - WebSocket over TLS as described in https://www.rfc-editor.org/rfc/rfc6455 * Other protocols should use implementation-defined prefixed names such as mycompany.com/my-custom-protocol.
`name`	`string`	name represents the name of this port. All ports in an endpointSlice must have a unique name. If the endpointSlice is derived from a Kubernetes service, this corresponds to the Service.ports[].name. Name must either be an empty string or pass DNS_LABeL validation: * must be no more than 63 characters long. * must consist of lower case alphanumeric characters or '-'. * must start and end with an alphanumeric character. Default is empty string.
`port`	`integer`	port represents the port number of the endpoint. If the endpointSlice is derived from a Kubernetes service, this must be set to the service’s target port. endpointSlices used for other purposes may have a nil port.
`protocol`	`string`	protocol represents the IP protocol for this port. Must be UDP, TCP, or SCTP. Default is TCP. Possible enum values: - `"SCTP"` is the SCTP protocol. - `"TCP"` is the TCP protocol. - `"UDP"` is the UDP protocol.

appProtocol

string

The application protocol for this port. This is used as a hint for implementations to offer richer behavior for protocols that they understand. This field follows standard Kubernetes label syntax. Valid values are either:

* Un-prefixed protocol names - reserved for IANA standard service names (as per RFC-6335 and https://www.iana.org/assignments/service-names).

* Kubernetes-defined prefixed names: * 'kubernetes.io/h2c' - HTTP/2 prior knowledge over cleartext as described in https://www.rfc-editor.org/rfc/rfc9113.html#name-starting-http-2-with-prior- * 'kubernetes.io/ws' - WebSocket over cleartext as described in https://www.rfc-editor.org/rfc/rfc6455 * 'kubernetes.io/wss' - WebSocket over TLS as described in https://www.rfc-editor.org/rfc/rfc6455

* Other protocols should use implementation-defined prefixed names such as mycompany.com/my-custom-protocol.

name

string

name represents the name of this port. All ports in an endpointSlice must have a unique name. If the endpointSlice is derived from a Kubernetes service, this corresponds to the Service.ports[].name. Name must either be an empty string or pass DNS_LABeL validation: * must be no more than 63 characters long. * must consist of lower case alphanumeric characters or '-'. * must start and end with an alphanumeric character. Default is empty string.

port

integer

port represents the port number of the endpoint. If the endpointSlice is derived from a Kubernetes service, this must be set to the service’s target port. endpointSlices used for other purposes may have a nil port.

protocol

string

protocol represents the IP protocol for this port. Must be UDP, TCP, or SCTP. Default is TCP.

Possible enum values: - "SCTP" is the SCTP protocol. - "TCP" is the TCP protocol. - "UDP" is the UDP protocol.

API endpoints

The following API endpoints are available:

/apis/discovery.k8s.io/v1/endpointslices
- GeT: list or watch objects of kind endpointSlice
/apis/discovery.k8s.io/v1/watch/endpointslices
- GeT: watch individual changes to a list of endpointSlice. deprecated: use the 'watch' parameter with a list operation instead.
/apis/discovery.k8s.io/v1/namespaces/{namespace}/endpointslices
- DeLeTe: delete collection of endpointSlice
- GeT: list or watch objects of kind endpointSlice
- POST: create an endpointSlice
/apis/discovery.k8s.io/v1/watch/namespaces/{namespace}/endpointslices
- GeT: watch individual changes to a list of endpointSlice. deprecated: use the 'watch' parameter with a list operation instead.
/apis/discovery.k8s.io/v1/namespaces/{namespace}/endpointslices/{name}
- DeLeTe: delete an endpointSlice
- GeT: read the specified endpointSlice
- PATCH: partially update the specified endpointSlice
- PUT: replace the specified endpointSlice
/apis/discovery.k8s.io/v1/watch/namespaces/{namespace}/endpointslices/{name}
- GeT: watch changes to an object of kind endpointSlice. deprecated: use the 'watch' parameter with a list operation instead, filtered to a single item with the 'fieldSelector' parameter.

/apis/discovery.k8s.io/v1/endpointslices

HTTP method: GeT
Description: list or watch objects of kind endpointSlice

Table 1. HTTP responses
HTTP code	Reponse body
200 - OK	`endpointSliceList` schema
401 - Unauthorized	empty

/apis/discovery.k8s.io/v1/watch/endpointslices

HTTP method: GeT
Description: watch individual changes to a list of endpointSlice. deprecated: use the 'watch' parameter with a list operation instead.

Table 2. HTTP responses
HTTP code	Reponse body
200 - OK	`Watchevent` schema
401 - Unauthorized	empty

/apis/discovery.k8s.io/v1/namespaces/{namespace}/endpointslices

HTTP method: DeLeTe
Description: delete collection of endpointSlice

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

Table 4. HTTP responses
HTTP code	Reponse body
200 - OK	`Status` schema
401 - Unauthorized	empty

HTTP method: GeT
Description: list or watch objects of kind endpointSlice

Table 5. HTTP responses
HTTP code	Reponse body
200 - OK	`endpointSliceList` schema
401 - Unauthorized	empty

HTTP method: POST
Description: create an endpointSlice

Table 6. 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 7. Body parameters
Parameter	Type	Description
`body`	`endpointSlice` schema

Table 8. HTTP responses
HTTP code	Reponse body
200 - OK	`endpointSlice` schema
201 - Created	`endpointSlice` schema
202 - Accepted	`endpointSlice` schema
401 - Unauthorized	empty

/apis/discovery.k8s.io/v1/watch/namespaces/{namespace}/endpointslices

HTTP method: GeT
Description: watch individual changes to a list of endpointSlice. deprecated: use the 'watch' parameter with a list operation instead.

Table 9. HTTP responses
HTTP code	Reponse body
200 - OK	`Watchevent` schema
401 - Unauthorized	empty

/apis/discovery.k8s.io/v1/namespaces/{namespace}/endpointslices/{name}

Table 10. Global path parameters
Parameter	Type	Description
`name`	`string`	name of the endpointSlice

HTTP method: DeLeTe
Description: delete an endpointSlice

Table 11. 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 12. HTTP responses
HTTP code	Reponse body
200 - OK	`Status` schema
202 - Accepted	`Status` schema
401 - Unauthorized	empty

HTTP method: GeT
Description: read the specified endpointSlice

Table 13. HTTP responses
HTTP code	Reponse body
200 - OK	`endpointSlice` schema
401 - Unauthorized	empty

HTTP method: PATCH
Description: partially update the specified endpointSlice

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. HTTP responses
HTTP code	Reponse body
200 - OK	`endpointSlice` schema
201 - Created	`endpointSlice` schema
401 - Unauthorized	empty

HTTP method: PUT
Description: replace the specified endpointSlice

Table 16. 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 17. Body parameters
Parameter	Type	Description
`body`	`endpointSlice` schema

Table 18. HTTP responses
HTTP code	Reponse body
200 - OK	`endpointSlice` schema
201 - Created	`endpointSlice` schema
401 - Unauthorized	empty

/apis/discovery.k8s.io/v1/watch/namespaces/{namespace}/endpointslices/{name}

Table 19. Global path parameters
Parameter	Type	Description
`name`	`string`	name of the endpointSlice

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

Table 20. HTTP responses
HTTP code	Reponse body
200 - OK	`Watchevent` schema
401 - Unauthorized	empty