Method: nodeGroups.list

Retrieves a list of node groups available to the specified project. Note: use nodeGroups.listNodes for more details about each group.

HTTP request

GET https://compute.googleapis.com/compute/beta/projects/{project}/zones/{zone}/nodeGroups

The URL uses gRPC Transcoding syntax.

Path parameters

Parameters
project

string

Project ID for this request.
zone

string

The name of the zone for this request.

Query parameters

Parameters
maxResults

integer (uint32 format)

The maximum number of results per page that should be returned. If the number of available results is larger than maxResults, Compute Engine returns a nextPageToken that can be used to get the next page of results in subsequent list requests. Acceptable values are 0 to 500, inclusive. (Default: 500)
pageToken

string

Specifies a page token to use. Set pageToken to the nextPageToken returned by a previous list request to get the next page of results.
filter

string

A filter expression that filters resources listed in the response. Most Compute resources support two types of filter expressions: expressions that support regular expressions and expressions that follow API improvement proposal AIP-160. These two types of filter expressions cannot be mixed in one request.

If you want to use AIP-160, your expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either =, !=, >, <, <=, >= or :.

For example, if you are filtering Compute Engine instances, you can exclude instances named example-instance by specifying name != example-instance.

The :* comparison can be used to test whether a key has been defined. For example, to find all objects with owner label use:

labels.owner:*

You can also filter nested fields. For example, you could specify scheduling.automaticRestart = false to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels.

To filter on multiple expressions, provide each separate expression within parentheses. For example:

(scheduling.automaticRestart = true)
(cpuPlatform = "Intel Skylake")

By default, each expression is an AND expression. However, you can include AND and OR expressions explicitly. For example:

(cpuPlatform = "Intel Skylake") OR
(cpuPlatform = "Intel Broadwell") AND
(scheduling.automaticRestart = true)

If you want to use a regular expression, use the eq (equal) or ne (not equal) operator against a single un-parenthesized expression with or without quotes or against multiple parenthesized expressions. Examples:

fieldname eq unquoted literal fieldname eq 'single quoted literal' fieldname eq "double quoted literal" (fieldname1 eq literal) (fieldname2 ne "literal")

The literal value is interpreted as a regular expression using Google RE2 library syntax. The literal value must match the entire field.

For example, to filter for instances that do not end with name "instance", you would use name ne .*instance.

You cannot combine constraints on multiple fields using regular expressions.
orderBy

string

Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name.

You can also sort results in descending order based on the creation timestamp using orderBy="creationTimestamp desc". This sorts results based on the creationTimestamp field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.

Currently, only sorting by name or creationTimestamp desc is supported.
returnPartialSuccess

boolean

Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.

For example, when partial success behavior is enabled, aggregatedList for a single zone scope either returns all resources in the zone or no resources, with an error code.

Request body

The request body must be empty.

Response body

Contains a list of nodeGroups.

If successful, the response body contains data with the following structure:

JSON representation 
{
  "kind": string,
  "id": string,
  "items": [
    {
      "kind": string,
      "id": string,
      "creationTimestamp": string,
      "name": string,
      "description": string,
      "nodeTemplate": string,
      "zone": string,
      "selfLink": string,
      "status": enum,
      "size": integer,
      "autoscalingPolicy": {
        "mode": enum,
        "minNodes": integer,
        "maxNodes": integer
      },
      "maintenancePolicy": enum,
      "locationHint": string,
      "fingerprint": string,
      "maintenanceWindow": {
        "startTime": string,
        "maintenanceDuration": {
          "seconds": string,
          "nanos": integer
        }
      },
      "shareSettings": {
        "shareType": enum,
        "projects": [
          string
        ],
        "projectMap": {
          string: {
            "projectId": string
          },
          ...
        }
      },
      "maintenanceInterval": enum
    }
  ],
  "nextPageToken": string,
  "selfLink": string,
  "warning": {
    "code": enum,
    "message": string,
    "data": [
      {
        "key": string,
        "value": string
      }
    ]
  }
}
Fields
kind

string

[Output Only] Type of resource.Always compute#nodeGroupList for lists of node groups.
id

string

[Output Only] Unique identifier for the resource; defined by the server.
items[]

object

A list of NodeGroup resources.
items[].kind

string

[Output Only] The type of the resource. Always compute#nodeGroup for node group.
items[].id

string (uint64 format)

[Output Only] The unique identifier for the resource. This identifier is defined by the server.
items[].creationTimestamp

string

[Output Only] Creation timestamp in RFC3339 text format.
items[].name

string

The name of the resource, provided by the client when initially creating the resource. The resource name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
items[].description

string

An optional description of this resource. Provide this property when you create the resource.
items[].nodeTemplate

string

URL of the node template to create the node group from.
items[].zone

string

[Output Only] The name of the zone where the node group resides, such as us-central1-a.
items[].selfLink

string

[Output Only] Server-defined URL for the resource.
items[].status

enum
items[].size

integer

[Output Only] The total number of nodes in the node group.
items[].autoscalingPolicy

object

Specifies how autoscaling should behave.
items[].autoscalingPolicy.mode

enum

The autoscaling mode. Set to one of: ON, OFF, or ONLY_SCALE_OUT. For more information, see Autoscaler modes.
items[].autoscalingPolicy.minNodes

integer

The minimum number of nodes that the group should have.
items[].autoscalingPolicy.maxNodes

integer

The maximum number of nodes that the group should have. Must be set if autoscaling is enabled. Maximum value allowed is 100.
items[].maintenancePolicy

enum

Specifies how to handle instances when a node in the group undergoes maintenance. Set to one of: DEFAULT, RESTART_IN_PLACE, or MIGRATE_WITHIN_NODE_GROUP. The default value is DEFAULT. For more information, see Maintenance policies.
items[].locationHint

string

An opaque location hint used to place the Node close to other resources. This field is for use by internal tools that use the public API. The location hint here on the NodeGroup overrides any locationHint present in the NodeTemplate.
items[].fingerprint

string (bytes format)

A base64-encoded string.
items[].maintenanceWindow

object
items[].maintenanceWindow.startTime

string

Start time of the window. This must be in UTC format that resolves to one of 00:00, 04:00, 08:00, 12:00, 16:00, or 20:00. For example, both 13:00-5 and 08:00 are valid.
items[].maintenanceWindow.maintenanceDuration

object

[Output only] A predetermined duration for the window, automatically chosen to be the smallest possible in the given scenario.
items[].maintenanceWindow.maintenanceDuration.seconds

string (int64 format)

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years
items[].maintenanceWindow.maintenanceDuration.nanos

integer

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 seconds field and a positive nanos field. Must be from 0 to 999,999,999 inclusive.
items[].shareSettings

object

Share-settings for the node group
items[].shareSettings.shareType

enum

Type of sharing for this shared-reservation
items[].shareSettings.projects[]

string

A nodeGroups.list of Project names to specify consumer projects for this shared-reservation. This is only valid when shareType's value is SPECIFIC_PROJECTS.
items[].shareSettings.projectMap[]

map (key: string, value: object)

A map of project id and project config. This is only valid when shareType's value is SPECIFIC_PROJECTS.
items[].shareSettings.projectMap[].projectId

string

The project ID, should be same as the key of this project config in the parent map.
items[].maintenanceInterval

enum

Specifies the frequency of planned maintenance events. The accepted values are: AS_NEEDED and RECURRENT.
nextPageToken

string

[Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than maxResults, use the nextPageToken as a value for the query parameter pageToken in the next list request. Subsequent list requests will have their own nextPageToken to continue paging through the results.
warning

object

[Output Only] Informational warning message.
warning.code

enum

[Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
warning.message

string

[Output Only] A human-readable description of the warning code.
warning.data[]

object

[Output Only] Metadata about this warning in key: value format. For example: 

"data": [  {  "key": "scope",  "value": "zones/us-east1-d"  }
warning.data[].key

string

[Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
warning.data[].value

string

[Output Only] A warning data value corresponding to the key.

Authorization scopes

Requires one of the following OAuth scopes:

  • https://www.googleapis.com/auth/compute.readonly
  • https://www.googleapis.com/auth/compute
  • https://www.googleapis.com/auth/cloud-platform

For more information, see the Authentication Overview.

IAM Permissions

In addition to any permissions specified on the fields above, authorization requires one or more of the following IAM permissions:

  • compute.nodeGroups.list

To find predefined roles that contain those permissions, see Compute Engine IAM Roles.