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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

MachineSpec defines the desired state of Machine.

status

object

MachineStatus defines the observed state of Machine.

.spec

Description

MachineSpec defines the desired state of Machine.

Type

object

Required
  • bootstrap

  • clusterName

  • infrastructureRef

Property Type Description

bootstrap

object

Bootstrap is a reference to a local struct which encapsulates fields to configure the Machine’s bootstrapping mechanism.

clusterName

string

ClusterName is the name of the Cluster this object belongs to.

failureDomain

string

FailureDomain is the failure domain the machine will be created in. Must match a key in the FailureDomains map stored on the cluster object.

infrastructureRef

object

InfrastructureRef is a required reference to a custom resource offered by an infrastructure provider.

nodeDeletionTimeout

string

NodeDeletionTimeout defines how long the controller will attempt to delete the Node that the Machine hosts after the Machine is marked for deletion. A duration of 0 will retry deletion indefinitely. Defaults to 10 seconds.

nodeDrainTimeout

string

NodeDrainTimeout is the total amount of time that the controller will spend on draining a node. The default value is 0, meaning that the node can be drained without any time limitations. NOTE: NodeDrainTimeout is different from kubectl drain --timeout

nodeVolumeDetachTimeout

string

NodeVolumeDetachTimeout is the total amount of time that the controller will spend on waiting for all volumes to be detached. The default value is 0, meaning that the volumes can be detached without any time limitations.

providerID

string

ProviderID is the identification ID of the machine provided by the provider. This field must match the provider ID as seen on the node object corresponding to this machine. This field is required by higher level consumers of cluster-api. Example use case is cluster autoscaler with cluster-api as provider. Clean-up logic in the autoscaler compares machines to nodes to find out machines at provider which could not get registered as Kubernetes nodes. With cluster-api as a generic out-of-tree provider for autoscaler, this field is required by autoscaler to be able to have a provider view of the list of machines. Another list of nodes is queried from the k8s apiserver and then a comparison is done to find out unregistered machines and are marked for delete. This field will be set by the actuators and consumed by higher level entities like autoscaler that will be interfacing with cluster-api as generic provider.

version

string

Version defines the desired Kubernetes version. This field is meant to be optionally used by bootstrap providers.

.spec.bootstrap

Description

Bootstrap is a reference to a local struct which encapsulates fields to configure the Machine’s bootstrapping mechanism.

Type

object

Property Type Description

configRef

object

ConfigRef is a reference to a bootstrap provider-specific resource that holds configuration details. The reference is optional to allow users/operators to specify Bootstrap.DataSecretName without the need of a controller.

dataSecretName

string

DataSecretName is the name of the secret that stores the bootstrap data script. If nil, the Machine should remain in the Pending state.

.spec.bootstrap.configRef

Description

ConfigRef is a reference to a bootstrap provider-specific resource that holds configuration details. The reference is optional to allow users/operators to specify Bootstrap.DataSecretName without the need of a controller.

Type

object

Property Type Description

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. TODO: this design is not final and this field is subject to change in the future.

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

.spec.infrastructureRef

Description

InfrastructureRef is a required reference to a custom resource offered by an infrastructure provider.

Type

object

Property Type Description

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. TODO: this design is not final and this field is subject to change in the future.

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

.status

Description

MachineStatus defines the observed state of Machine.

Type

object

Property Type Description

addresses

array

Addresses is a list of addresses assigned to the machine. This field is copied from the infrastructure provider reference.

addresses[]

object

MachineAddress contains information for the node’s address.

bootstrapReady

boolean

BootstrapReady is the state of the bootstrap provider.

certificatesExpiryDate

string

CertificatesExpiryDate is the expiry date of the machine certificates. This value is only set for control plane machines.

conditions

array

Conditions defines current service state of the Machine.

conditions[]

object

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

failureMessage

string

FailureMessage will be set in the event that there is a terminal problem reconciling the Machine and will contain a more verbose string suitable for logging and human consumption.

This field should not be set for transitive errors that a controller faces that are expected to be fixed automatically over time (like service outages), but instead indicate that something is fundamentally wrong with the Machine’s spec or the configuration of the controller, and that manual intervention is required. Examples of terminal errors would be invalid combinations of settings in the spec, values that are unsupported by the controller, or the responsible controller itself being critically misconfigured.

Any transient errors that occur during the reconciliation of Machines can be added as events to the Machine object and/or logged in the controller’s output.

failureReason

string

FailureReason will be set in the event that there is a terminal problem reconciling the Machine and will contain a succinct value suitable for machine interpretation.

This field should not be set for transitive errors that a controller faces that are expected to be fixed automatically over time (like service outages), but instead indicate that something is fundamentally wrong with the Machine’s spec or the configuration of the controller, and that manual intervention is required. Examples of terminal errors would be invalid combinations of settings in the spec, values that are unsupported by the controller, or the responsible controller itself being critically misconfigured.

Any transient errors that occur during the reconciliation of Machines can be added as events to the Machine object and/or logged in the controller’s output.

infrastructureReady

boolean

InfrastructureReady is the state of the infrastructure provider.

lastUpdated

string

LastUpdated identifies when the phase of the Machine last transitioned.

nodeInfo

object

NodeInfo is a set of ids/uuids to uniquely identify the node. More info: https://kubernetes.io/docs/concepts/nodes/node/#info

nodeRef

object

NodeRef will point to the corresponding Node if it exists.

observedGeneration

integer

ObservedGeneration is the latest generation observed by the controller.

phase

string

Phase represents the current phase of machine actuation. E.g. Pending, Running, Terminating, Failed etc.

.status.addresses

Description

Addresses is a list of addresses assigned to the machine. This field is copied from the infrastructure provider reference.

Type

array

.status.addresses[]

Description

MachineAddress contains information for the node’s address.

Type

object

Required
  • address

  • type

Property Type Description

address

string

The machine address.

type

string

Machine address type, one of Hostname, ExternalIP, InternalIP, ExternalDNS or InternalDNS.

.status.conditions

Description

Conditions defines current service state of the Machine.

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.nodeInfo

Description

NodeInfo is a set of ids/uuids to uniquely identify the node. More info: https://kubernetes.io/docs/concepts/nodes/node/#info

Type

object

Required
  • architecture

  • bootID

  • containerRuntimeVersion

  • kernelVersion

  • kubeProxyVersion

  • kubeletVersion

  • machineID

  • operatingSystem

  • osImage

  • systemUUID

Property Type Description

architecture

string

The Architecture reported by the node

bootID

string

Boot ID reported by the node.

containerRuntimeVersion

string

ContainerRuntime Version reported by the node through runtime remote API (e.g. containerd://1.4.2).

kernelVersion

string

Kernel Version reported by the node from 'uname -r' (e.g. 3.16.0-0.bpo.4-amd64).

kubeProxyVersion

string

KubeProxy Version reported by the node.

kubeletVersion

string

Kubelet Version reported by the node.

machineID

string

MachineID reported by the node. For unique machine identification in the cluster this field is preferred. Learn more from man(5) machine-id: http://man7.org/linux/man-pages/man5/machine-id.5.html

operatingSystem

string

The Operating System reported by the node

osImage

string

OS Image reported by the node from /etc/os-release (e.g. Debian GNU/Linux 7 (wheezy)).

systemUUID

string

SystemUUID reported by the node. For unique machine identification MachineID is preferred. This field is specific to Red Hat hosts https://access.redhat.com/documentation/en-us/red_hat_subscription_management/1/html/rhsm/uuid

.status.nodeRef

Description

NodeRef will point to the corresponding Node if it exists.

Type

object

Property Type Description

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. TODO: this design is not final and this field is subject to change in the future.

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

API endpoints

The following API endpoints are available:

  • /apis/cluster.x-k8s.io/v1beta1/machines

    • GET: list objects of kind Machine

  • /apis/cluster.x-k8s.io/v1beta1/namespaces/{namespace}/machines

    • DELETE: delete collection of Machine

    • GET: list objects of kind Machine

    • POST: create a Machine

  • /apis/cluster.x-k8s.io/v1beta1/namespaces/{namespace}/machines/{name}

    • DELETE: delete a Machine

    • GET: read the specified Machine

    • PATCH: partially update the specified Machine

    • PUT: replace the specified Machine

  • /apis/cluster.x-k8s.io/v1beta1/namespaces/{namespace}/machines/{name}/status

    • GET: read status of the specified Machine

    • PATCH: partially update status of the specified Machine

    • PUT: replace status of the specified Machine

/apis/cluster.x-k8s.io/v1beta1/machines

HTTP method

GET

Description

list objects of kind Machine

Table 1. HTTP responses
HTTP code Reponse body

200 - OK

MachineList schema

401 - Unauthorized

Empty

/apis/cluster.x-k8s.io/v1beta1/namespaces/{namespace}/machines

HTTP method

DELETE

Description

delete collection of Machine

Table 2. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

401 - Unauthorized

Empty

HTTP method

GET

Description

list objects of kind Machine

Table 3. HTTP responses
HTTP code Reponse body

200 - OK

MachineList schema

401 - Unauthorized

Empty

HTTP method

POST

Description

create a Machine

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

Machine schema

Table 6. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

201 - Created

Machine schema

202 - Accepted

Machine schema

401 - Unauthorized

Empty

/apis/cluster.x-k8s.io/v1beta1/namespaces/{namespace}/machines/{name}

Table 7. Global path parameters
Parameter Type Description

name

string

name of the Machine

HTTP method

DELETE

Description

delete a Machine

Table 8. 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 9. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

202 - Accepted

Status schema

401 - Unauthorized

Empty

HTTP method

GET

Description

read the specified Machine

Table 10. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update the specified Machine

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

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 12. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace the specified Machine

Table 13. 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 14. Body parameters
Parameter Type Description

body

Machine schema

Table 15. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

201 - Created

Machine schema

401 - Unauthorized

Empty

/apis/cluster.x-k8s.io/v1beta1/namespaces/{namespace}/machines/{name}/status

Table 16. Global path parameters
Parameter Type Description

name

string

name of the Machine

HTTP method

GET

Description

read status of the specified Machine

Table 17. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

401 - Unauthorized

Empty

HTTP method

PATCH

Description

partially update status of the specified Machine

Table 18. 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 19. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

401 - Unauthorized

Empty

HTTP method

PUT

Description

replace status of the specified Machine

Table 20. 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 21. Body parameters
Parameter Type Description

body

Machine schema

Table 22. HTTP responses
HTTP code Reponse body

200 - OK

Machine schema

201 - Created

Machine schema

401 - Unauthorized

Empty