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12장. Endpoints [v1]

Description

Endpoints is a collection of endpoints that implement the actual service. Example: 

 Name: "mysvc",
 Subsets: [
   {
     Addresses: [{"ip": "10.10.1.1"}, {"ip": "10.10.2.2"}],
     Ports: [{"name": "a", "port": 8675}, {"name": "b", "port": 309}]
   },
   {
     Addresses: [{"ip": "10.10.3.3"}],
     Ports: [{"name": "a", "port": 93}, {"name": "b", "port": 76}]
   },
]

Endpoints is a legacy API and does not contain information about all Service features. Use discoveryv1.EndpointSlice for complete information about Service endpoints.

Deprecated: This API is deprecated in v1.33+. Use discoveryv1.EndpointSlice.

Type
object

12.1. Specification
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Expand
PropertyTypeDescription

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

subsets

array

The set of all endpoints is the union of all subsets. Addresses are placed into subsets according to the IPs they share. A single address with multiple ports, some of which are ready and some of which are not (because they come from different containers) will result in the address being displayed in different subsets for the different ports. No address will appear in both Addresses and NotReadyAddresses in the same subset. Sets of addresses and ports that comprise a service.

subsets[]

object

EndpointSubset is a group of addresses with a common set of ports. The expanded set of endpoints is the Cartesian product of Addresses x Ports. For example, given:

{ Addresses: [{"ip": "10.10.1.1"}, {"ip": "10.10.2.2"}], Ports: [{"name": "a", "port": 8675}, {"name": "b", "port": 309}] }

The resulting set of endpoints can be viewed as:

a: [ 10.10.1.1:8675, 10.10.2.2:8675 ], b: [ 10.10.1.1:309, 10.10.2.2:309 ]

Deprecated: This API is deprecated in v1.33+.

12.1.1. .subsets
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Description
The set of all endpoints is the union of all subsets. Addresses are placed into subsets according to the IPs they share. A single address with multiple ports, some of which are ready and some of which are not (because they come from different containers) will result in the address being displayed in different subsets for the different ports. No address will appear in both Addresses and NotReadyAddresses in the same subset. Sets of addresses and ports that comprise a service.
Type
array

12.1.2. .subsets[]
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Description

EndpointSubset is a group of addresses with a common set of ports. The expanded set of endpoints is the Cartesian product of Addresses x Ports. For example, given: 

{
  Addresses: [{"ip": "10.10.1.1"}, {"ip": "10.10.2.2"}],
  Ports:     [{"name": "a", "port": 8675}, {"name": "b", "port": 309}]
}

The resulting set of endpoints can be viewed as: 

a: [ 10.10.1.1:8675, 10.10.2.2:8675 ],
b: [ 10.10.1.1:309, 10.10.2.2:309 ]

Deprecated: This API is deprecated in v1.33+.

Type
object
Expand
PropertyTypeDescription

addresses

array

IP addresses which offer the related ports that are marked as ready. These endpoints should be considered safe for load balancers and clients to utilize.

addresses[]

object

EndpointAddress is a tuple that describes single IP address. Deprecated: This API is deprecated in v1.33+.

notReadyAddresses

array

IP addresses which offer the related ports but are not currently marked as ready because they have not yet finished starting, have recently failed a readiness check, or have recently failed a liveness check.

notReadyAddresses[]

object

EndpointAddress is a tuple that describes single IP address. Deprecated: This API is deprecated in v1.33+.

ports

array

Port numbers available on the related IP addresses.

ports[]

object

EndpointPort is a tuple that describes a single port. Deprecated: This API is deprecated in v1.33+.

12.1.3. .subsets[].addresses
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Description
IP addresses which offer the related ports that are marked as ready. These endpoints should be considered safe for load balancers and clients to utilize.
Type
array

12.1.4. .subsets[].addresses[]
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Description
EndpointAddress is a tuple that describes single IP address. Deprecated: This API is deprecated in v1.33+.
Type
object
Required
  • ip
Expand
PropertyTypeDescription

hostname

string

The Hostname of this endpoint

ip

string

The IP of this endpoint. May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10), or link-local multicast (224.0.0.0/24 or ff02::/16).

nodeName

string

Optional: Node hosting this endpoint. This can be used to determine endpoints local to a node.

targetRef

object

ObjectReference contains enough information to let you inspect or modify the referred object.

12.1.5. .subsets[].addresses[].targetRef
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Description
ObjectReference contains enough information to let you inspect or modify the referred object.
Type
object
Expand
PropertyTypeDescription

apiVersion

string

API version of the referent.

fieldPath

string

If referring to a piece of an object instead of an entire object, this string should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2]. For example, if the object reference is to a container within a pod, this would take on a value like: "spec.containers{name}" (where "name" refers to the name of the container that triggered the event) or if no container name is specified "spec.containers[2]" (container with index 2 in this pod). This syntax is chosen only to have some well-defined way of referencing a part of an object.

kind

string

Kind of the referent. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

namespace

string

Namespace of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/

resourceVersion

string

Specific resourceVersion to which this reference is made, if any. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#concurrency-control-and-consistency

uid

string

UID of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#uids

12.1.6. .subsets[].notReadyAddresses
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Description
IP addresses which offer the related ports but are not currently marked as ready because they have not yet finished starting, have recently failed a readiness check, or have recently failed a liveness check.
Type
array

12.1.7. .subsets[].notReadyAddresses[]
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Description
EndpointAddress is a tuple that describes single IP address. Deprecated: This API is deprecated in v1.33+.
Type
object
Required
  • ip
Expand
PropertyTypeDescription

hostname

string

The Hostname of this endpoint

ip

string

The IP of this endpoint. May not be loopback (127.0.0.0/8 or ::1), link-local (169.254.0.0/16 or fe80::/10), or link-local multicast (224.0.0.0/24 or ff02::/16).

nodeName

string

Optional: Node hosting this endpoint. This can be used to determine endpoints local to a node.

targetRef

object

ObjectReference contains enough information to let you inspect or modify the referred object.

12.1.8. .subsets[].notReadyAddresses[].targetRef
링크 복사

Description
ObjectReference contains enough information to let you inspect or modify the referred object.
Type
object
Expand
PropertyTypeDescription

apiVersion

string

API version of the referent.

fieldPath

string

If referring to a piece of an object instead of an entire object, this string should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2]. For example, if the object reference is to a container within a pod, this would take on a value like: "spec.containers{name}" (where "name" refers to the name of the container that triggered the event) or if no container name is specified "spec.containers[2]" (container with index 2 in this pod). This syntax is chosen only to have some well-defined way of referencing a part of an object.

kind

string

Kind of the referent. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

namespace

string

Namespace of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/

resourceVersion

string

Specific resourceVersion to which this reference is made, if any. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#concurrency-control-and-consistency

uid

string

UID of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#uids

12.1.9. .subsets[].ports
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Description
Port numbers available on the related IP addresses.
Type
array

12.1.10. .subsets[].ports[]
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Description
EndpointPort is a tuple that describes a single port. Deprecated: This API is deprecated in v1.33+.
Type
object
Required
  • port
Expand
PropertyTypeDescription

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

The name of this port. This must match the 'name' field in the corresponding ServicePort. Must be a DNS_LABEL. Optional only if one port is defined.

port

integer

The port number of the endpoint.

protocol

string

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.

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