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  1. Documentation
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ClusterAutoscaler [autoscaling.openshift.io/v1]

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

Desired state of ClusterAutoscaler resource

status

object

Most recently observed status of ClusterAutoscaler resource

.spec

Description

Desired state of ClusterAutoscaler resource

Type

object

Property Type Description

balanceSimilarNodeGroups

boolean

BalanceSimilarNodeGroups enables/disables the --balance-similar-node-groups cluster-autoscaler feature. This feature will automatically identify node groups with the same instance type and the same set of labels and try to keep the respective sizes of those node groups balanced.

balancingIgnoredLabels

array (string)

BalancingIgnoredLabels sets "--balancing-ignore-label <label name>" flag on cluster-autoscaler for each listed label. This option specifies labels that cluster autoscaler should ignore when considering node group similarity. For example, if you have nodes with "topology.ebs.csi.aws.com/zone" label, you can add name of this label here to prevent cluster autoscaler from spliting nodes into different node groups based on its value.

ignoreDaemonsetsUtilization

boolean

enables/Disables --ignore-daemonsets-utilization CA feature flag. Should CA ignore DaemonSet pods when calculating resource utilization for scaling down. false by default

logVerbosity

integer

Sets the autoscaler log level. Default value is 1, level 4 is recommended for DeBUGGING and level 6 will enable almost everything. This option has priority over log level set by the CLUSTeR_AUTOSCALeR_VeRBOSITY environment variable.

maxNodeProvisionTime

string

Maximum time CA waits for node to be provisioned

maxPodGracePeriod

integer

Gives pods graceful termination time before scaling down

podPriorityThreshold

integer

To allow users to schedule "best-effort" pods, which shouldn’t trigger Cluster Autoscaler actions, but only run when there are spare resources available, More info: https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#how-does-cluster-autoscaler-work-with-pod-priority-and-preemption

resourceLimits

object

Constraints of autoscaling resources

scaleDown

object

Configuration of scale down operation

skipNodesWithLocalStorage

boolean

enables/Disables --skip-nodes-with-local-storage CA feature flag. If true cluster autoscaler will never delete nodes with pods with local storage, e.g. emptyDir or HostPath. true by default at autoscaler

.spec.resourceLimits

Description

Constraints of autoscaling resources

Type

object

Property Type Description

cores

object

Minimum and maximum number of cores in cluster, in the format <min>:<max>. Cluster autoscaler will not scale the cluster beyond these numbers.

gpus

array

Minimum and maximum number of different GPUs in cluster, in the format <gpu_type>:<min>:<max>. Cluster autoscaler will not scale the cluster beyond these numbers. Can be passed multiple times.

gpus[]

object

maxNodesTotal

integer

Maximum number of nodes in all node groups. Cluster autoscaler will not grow the cluster beyond this number.

memory

object

Minimum and maximum number of gigabytes of memory in cluster, in the format <min>:<max>. Cluster autoscaler will not scale the cluster beyond these numbers.

.spec.resourceLimits.cores

Description

Minimum and maximum number of cores in cluster, in the format <min>:<max>. Cluster autoscaler will not scale the cluster beyond these numbers.

Type

object

Required

  • max

  • min

Property Type Description

max

integer

min

integer

.spec.resourceLimits.gpus

Description

Minimum and maximum number of different GPUs in cluster, in the format <gpu_type>:<min>:<max>. Cluster autoscaler will not scale the cluster beyond these numbers. Can be passed multiple times.

Type

array

.spec.resourceLimits.gpus[]

Description
Type

object

Required

  • max

  • min

  • type

Property Type Description

max

integer

min

integer

type

string

The type of GPU to associate with the minimum and maximum limits. This value is used by the Cluster Autoscaler to identify Nodes that will have GPU capacity by searching for it as a label value on the Node objects. For example, Nodes that carry the label key cluster-api/accelerator with the label value being the same as the Type field will be counted towards the resource limits by the Cluster Autoscaler.

.spec.resourceLimits.memory

Description

Minimum and maximum number of gigabytes of memory in cluster, in the format <min>:<max>. Cluster autoscaler will not scale the cluster beyond these numbers.

Type

object

Required

  • max

  • min

Property Type Description

max

integer

min

integer

.spec.scaleDown

Description

Configuration of scale down operation

Type

object

Required

  • enabled

Property Type Description

delayAfterAdd

string

How long after scale up that scale down evaluation resumes

delayAfterDelete

string

How long after node deletion that scale down evaluation resumes, defaults to scan-interval

delayAfterFailure

string

How long after scale down failure that scale down evaluation resumes

enabled

boolean

Should CA scale down the cluster

unneededTime

string

How long a node should be unneeded before it is eligible for scale down

utilizationThreshold

string

Node utilization level, defined as sum of requested resources divided by capacity, below which a node can be considered for scale down

.status

Description

Most recently observed status of ClusterAutoscaler resource

Type

object

API endpoints

The following API endpoints are available:

  • /apis/autoscaling.openshift.io/v1/clusterautoscalers

    • DeLeTe: delete collection of ClusterAutoscaler

    • GeT: list objects of kind ClusterAutoscaler

    • POST: create a ClusterAutoscaler

  • /apis/autoscaling.openshift.io/v1/clusterautoscalers/{name}

    • DeLeTe: delete a ClusterAutoscaler

    • GeT: read the specified ClusterAutoscaler

    • PATCH: partially update the specified ClusterAutoscaler

    • PUT: replace the specified ClusterAutoscaler

  • /apis/autoscaling.openshift.io/v1/clusterautoscalers/{name}/status

    • GeT: read status of the specified ClusterAutoscaler

    • PATCH: partially update status of the specified ClusterAutoscaler

    • PUT: replace status of the specified ClusterAutoscaler

/apis/autoscaling.openshift.io/v1/clusterautoscalers

HTTP method

DeLeTe

Description

delete collection of ClusterAutoscaler

Table 1. HTTP responses
HTTP code Reponse body

200 - OK

Status schema

401 - Unauthorized

empty
HTTP method

GeT

Description

list objects of kind ClusterAutoscaler

Table 2. HTTP responses
HTTP code Reponse body

200 - OK

ClusterAutoscalerList schema

401 - Unauthorized

empty
HTTP method

POST

Description

create a ClusterAutoscaler

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

ClusterAutoscaler schema
Table 5. HTTP responses
HTTP code Reponse body

200 - OK

ClusterAutoscaler schema

201 - Created

ClusterAutoscaler schema

202 - Accepted

ClusterAutoscaler schema

401 - Unauthorized

empty

/apis/autoscaling.openshift.io/v1/clusterautoscalers/{name}

Table 6. Global path parameters
Parameter Type Description

name

string

name of the ClusterAutoscaler
HTTP method

DeLeTe

Description

delete a ClusterAutoscaler

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 ClusterAutoscaler

Table 9. HTTP responses
HTTP code Reponse body

200 - OK

ClusterAutoscaler schema

401 - Unauthorized

empty
HTTP method

PATCH

Description

partially update the specified ClusterAutoscaler

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

ClusterAutoscaler schema

401 - Unauthorized

empty
HTTP method

PUT

Description

replace the specified ClusterAutoscaler

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

ClusterAutoscaler schema
Table 14. HTTP responses
HTTP code Reponse body

200 - OK

ClusterAutoscaler schema

201 - Created

ClusterAutoscaler schema

401 - Unauthorized

empty

/apis/autoscaling.openshift.io/v1/clusterautoscalers/{name}/status

Table 15. Global path parameters
Parameter Type Description

name

string

name of the ClusterAutoscaler
HTTP method

GeT

Description

read status of the specified ClusterAutoscaler

Table 16. HTTP responses
HTTP code Reponse body

200 - OK

ClusterAutoscaler schema

401 - Unauthorized

empty
HTTP method

PATCH

Description

partially update status of the specified ClusterAutoscaler

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

ClusterAutoscaler schema

401 - Unauthorized

empty
HTTP method

PUT

Description

replace status of the specified ClusterAutoscaler

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

ClusterAutoscaler schema
Table 21. HTTP responses
HTTP code Reponse body

200 - OK

ClusterAutoscaler schema

201 - Created

ClusterAutoscaler schema

401 - Unauthorized

empty