Method: regionInstanceGroupManagers.createInstances

Creates instances with per-instance configurations in this regional managed instance group. Instances are created using the current instance template. The create instances operation is marked DONE if the createInstances request is successful. The underlying actions take additional time. You must separately verify the status of the creating or actions with the listmanagedinstances method.

HTTP request

POST https://compute.googleapis.com/compute/beta/projects/{project}/regions/{region}/instanceGroupManagers/{instanceGroupManager}/createInstances

The URL uses gRPC Transcoding syntax.

Path parameters

Parameters
project

string

Project ID for this request.
region

string

The name of the region where the managed instance group is located. It should conform to RFC1035.
instanceGroupManager

string

The name of the managed instance group. It should conform to RFC1035.

Authorization requires the following IAM permission on the specified resource instanceGroupManager:

  • compute.instanceGroupManagers.update

Query parameters

Parameters
requestId

string

An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed.

For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request.

The request ID must be a valid UUID with the exception that zero UUID is not supported (00000000-0000-0000-0000-000000000000).

Request body

The request body contains data with the following structure:

JSON representation 
{
  "instances": [
    {
      "name": string,
      "preservedState": {
        "disks": {
          string: {
            "source": string,
            "mode": enum,
            "autoDelete": enum
          },
          ...
        },
        "metadata": {
          string: string,
          ...
        },
        "internalIPs": {
          string: {
            "autoDelete": enum,
            "ipAddress": {
              "literal": string,
              "address": string
            }
          },
          ...
        },
        "externalIPs": {
          string: {
            "autoDelete": enum,
            "ipAddress": {
              "literal": string,
              "address": string
            }
          },
          ...
        }
      },
      "status": enum,
      "fingerprint": string
    }
  ]
}
Fields
instances[].name

string

The name of a per-instance configuration and its corresponding instance. Serves as a merge key during regionInstanceGroupManagers.updatePerInstanceConfigs operations, that is, if a per-instance configuration with the same name exists then it will be updated, otherwise a new one will be created for the VM instance with the same name. An attempt to create a per-instance configconfiguration for a VM instance that either doesn't exist or is not part of the group will result in an error.
instances[].preservedState.disks[]

map (key: string, value: object)

Preserved disks defined for this instance. This map is keyed with the device names of the disks.
instances[].preservedState.disks[].source

string

The URL of the disk resource that is stateful and should be attached to the VM instance.
instances[].preservedState.disks[].mode

enum

The mode in which to attach this disk, either READ_WRITE or READ_ONLY. If not specified, the default is to attach the disk in READ_WRITE mode.
instances[].preservedState.disks[].autoDelete

enum

These stateful disks will never be deleted during autohealing, update, instance recreate operations. This flag is used to configure if the disk should be deleted after it is no longer used by the group, e.g. when the given instance or the whole MIG is deleted. Note: disks attached in READ_ONLY mode cannot be auto-deleted.
instances[].preservedState.metadata

map (key: string, value: string)

Preserved metadata defined for this instance.
instances[].preservedState.internalIPs[]

map (key: string, value: object)

Preserved internal IPs defined for this instance. This map is keyed with the name of the network interface.
instances[].preservedState.internalIPs[].autoDelete

enum

These stateful IPs will never be released during autohealing, update or VM instance recreate operations. This flag is used to configure if the IP reservation should be deleted after it is no longer used by the group, e.g. when the given instance or the whole group is deleted.
instances[].preservedState.internalIPs[].ipAddress

object

Ip address representation
instances[].preservedState.internalIPs[].ipAddress.literal

string

An IPv4 internal network address to assign to the instance for this network interface.
instances[].preservedState.internalIPs[].ipAddress.address

string

The URL of the reservation for this IP address.
instances[].preservedState.externalIPs[]

map (key: string, value: object)

Preserved external IPs defined for this instance. This map is keyed with the name of the network interface.
instances[].preservedState.externalIPs[].autoDelete

enum

These stateful IPs will never be released during autohealing, update or VM instance recreate operations. This flag is used to configure if the IP reservation should be deleted after it is no longer used by the group, e.g. when the given instance or the whole group is deleted.
instances[].preservedState.externalIPs[].ipAddress

object

Ip address representation
instances[].preservedState.externalIPs[].ipAddress.literal

string

An IPv4 internal network address to assign to the instance for this network interface.
instances[].preservedState.externalIPs[].ipAddress.address

string

The URL of the reservation for this IP address.
instances[].status

enum

The status of applying this per-instance configuration on the corresponding managed instance.
instances[].fingerprint

string (bytes format)

Fingerprint of this per-instance config. This field can be used in optimistic locking. It is ignored when inserting a per-instance config. An up-to-date fingerprint must be provided in order to update an existing per-instance configuration or the field needs to be unset.

A base64-encoded string.

Response body

Represents an Operation resource.

Google Compute Engine has three Operation resources:

You can use an operation resource to manage asynchronous API requests. For more information, read Handling API responses.

Operations can be global, regional or zonal.

  • For global operations, use the globalOperations resource.
  • For regional operations, use the regionOperations resource.
  • For zonal operations, use the zoneOperations resource.

For more information, read Global, Regional, and Zonal Resources.

Note that completed Operation resources have a limited retention period.

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

JSON representation 
{
  "kind": string,
  "id": string,
  "creationTimestamp": string,
  "name": string,
  "zone": string,
  "clientOperationId": string,
  "operationType": string,
  "targetLink": string,
  "targetId": string,
  "status": enum,
  "statusMessage": string,
  "user": string,
  "progress": integer,
  "insertTime": string,
  "startTime": string,
  "endTime": string,
  "error": {
    "errors": [
      {
        "code": string,
        "location": string,
        "message": string,
        "errorDetails": [
          {
            "errorInfo": {
              "reason": string,
              "domain": string,
              "metadatas": {
                string: string,
                ...
              }
            },
            "quotaInfo": {
              "metricName": string,
              "limitName": string,
              "dimensions": {
                string: string,
                ...
              },
              "limit": number,
              "futureLimit": number,
              "rolloutStatus": enum
            },
            "help": {
              "links": [
                {
                  "description": string,
                  "url": string
                }
              ]
            },
            "localizedMessage": {
              "locale": string,
              "message": string
            }
          }
        ]
      }
    ]
  },
  "warnings": [
    {
      "code": enum,
      "message": string,
      "data": [
        {
          "key": string,
          "value": string
        }
      ]
    }
  ],
  "httpErrorStatusCode": integer,
  "httpErrorMessage": string,
  "selfLink": string,
  "region": string,
  "description": string,
  "operationGroupId": string,

  // Union field metadata can be only one of the following:
  "setCommonInstanceMetadataOperationMetadata": {
    "clientOperationId": string,
    "perLocationOperations": {
      string: {
        "state": enum,
        "error": {
          "code": integer,
          "message": string,
          "details": [
            {
              "@type": string,
              field1: ...,
              ...
            }
          ]
        }
      },
      ...
    }
  },
  "instancesBulkInsertOperationMetadata": {
    "perLocationStatus": {
      string: {
        "status": enum,
        "targetVmCount": integer,
        "createdVmCount": integer,
        "failedToCreateVmCount": integer,
        "deletedVmCount": integer
      },
      ...
    }
  }
  // End of list of possible types for union field metadata.
}
Fields
kind

string

[Output Only] Type of the resource. Always compute#operation for Operation resources.
id

string (uint64 format)

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

string

[Deprecated] This field is deprecated.
name

string

[Output Only] Name of the operation.
zone

string

[Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations.
clientOperationId

string

[Output Only] The value of requestId if you provided it in the request. Not present otherwise.
operationType

string

[Output Only] The type of operation, such as insert, update, or delete, and so on.
targetId

string (uint64 format)

[Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
status

enum

[Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
statusMessage

string

[Output Only] An optional textual description of the current status of the operation.
user

string

[Output Only] User who requested the operation, for example: user@example.com or alice_smith_identifier (global/workforcePools/example-com-us-employees).
progress

integer

[Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
insertTime

string

[Output Only] The time that this operation was requested. This value is in RFC3339 text format.
startTime

string

[Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
endTime

string

[Output Only] The time that this operation was completed. This value is in RFC3339 text format.
error

object

[Output Only] If errors are generated during processing of the operation, this field will be populated.
error.errors[]

object

[Output Only] The array of errors encountered while processing this operation.
error.errors[].code

string

[Output Only] The error type identifier for this error.
error.errors[].location

string

[Output Only] Indicates the field in the request that caused the error. This property is optional.
error.errors[].message

string

[Output Only] An optional, human-readable error message.
error.errors[].errorDetails[]

object

[Output Only] An optional list of messages that contain the error details. There is a set of defined message types to use for providing details.The syntax depends on the error code. For example, QuotaExceededInfo will have details when the error code is QUOTA_EXCEEDED.
error.errors[].errorDetails[].errorInfo

object
error.errors[].errorDetails[].errorInfo.reason

string

The reason of the error. This is a constant value that identifies the proximate cause of the error. Error reasons are unique within a particular domain of errors. This should be at most 63 characters and match a regular expression of [A-Z][A-Z0-9_]+[A-Z0-9], which represents UPPER_SNAKE_CASE.
error.errors[].errorDetails[].errorInfo.domain

string

The logical grouping to which the "reason" belongs. The error domain is typically the registered service name of the tool or product that generates the error. Example: "pubsub.googleapis.com". If the error is generated by some common infrastructure, the error domain must be a globally unique value that identifies the infrastructure. For Google API infrastructure, the error domain is "googleapis.com".
error.errors[].errorDetails[].errorInfo.metadatas

map (key: string, value: string)

Additional structured details about this error.

Keys must match /[a-z][a-zA-Z0-9-_]+/ but should ideally be lowerCamelCase. Also they must be limited to 64 characters in length. When identifying the current value of an exceeded limit, the units should be contained in the key, not the value. For example, rather than {"instanceLimit": "100/request"}, should be returned as, {"instanceLimitPerRequest": "100"}, if the client exceeds the number of instances that can be created in a single (batch) request.
error.errors[].errorDetails[].quotaInfo

object
error.errors[].errorDetails[].quotaInfo.metricName

string

The Compute Engine quota metric name.
error.errors[].errorDetails[].quotaInfo.limitName

string

The name of the quota limit.
error.errors[].errorDetails[].quotaInfo.dimensions

map (key: string, value: string)

The map holding related quota dimensions.
error.errors[].errorDetails[].quotaInfo.limit

number

Current effective quota limit. The limit's unit depends on the quota type or metric.
error.errors[].errorDetails[].quotaInfo.futureLimit

number

Future quota limit being rolled out. The limit's unit depends on the quota type or metric.
error.errors[].errorDetails[].quotaInfo.rolloutStatus

enum

Rollout status of the future quota limit.
error.errors[].errorDetails[].help

object
error.errors[].errorDetails[].help.links[]

object

URL(s) pointing to additional information on handling the current error.
error.errors[].errorDetails[].help.links[].description

string

Describes what the link offers.
error.errors[].errorDetails[].help.links[].url

string

The URL of the link.
error.errors[].errorDetails[].localizedMessage

object
error.errors[].errorDetails[].localizedMessage.locale

string

The locale used following the specification defined at https://www.rfc-editor.org/rfc/bcp/bcp47.txt. Examples are: "en-US", "fr-CH", "es-MX"
error.errors[].errorDetails[].localizedMessage.message

string

The localized error message in the above locale.
warnings[]

object

[Output Only] If warning messages are generated during processing of the operation, this field will be populated.
warnings[].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.
warnings[].message

string

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

object

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

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

string

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

integer

[Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
httpErrorMessage

string

[Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
region

string

[Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.
description

string

[Output Only] A textual description of the operation, which is set when the operation is created.
operationGroupId

string

[Output Only] An ID that represents a group of operations, such as when a group of operations results from a bulkInsert API request.
Union field metadata. [Output Only] Service-specific metadata attached to this operation. metadata can be only one of the following:
setCommonInstanceMetadataOperationMetadata

object

[Output Only] If the operation is for projects.setCommonInstanceMetadata, this field will contain information on all underlying zonal actions and their state.
setCommonInstanceMetadataOperationMetadata.clientOperationId

string

[Output Only] The client operation id.
setCommonInstanceMetadataOperationMetadata.perLocationOperations[]

map (key: string, value: object)

[Output Only] Status information per location (location name is key). Example key: zones/us-central1-a
setCommonInstanceMetadataOperationMetadata.perLocationOperations[].state

enum

[Output Only] Status of the action, which can be one of the following: PROPAGATING, PROPAGATED, ABANDONED, FAILED, or DONE.
setCommonInstanceMetadataOperationMetadata.perLocationOperations[].error

object

[Output Only] If state is ABANDONED or FAILED, this field is populated.
setCommonInstanceMetadataOperationMetadata.perLocationOperations[].error.code

integer

The status code, which should be an enum value of google.rpc.Code.
setCommonInstanceMetadataOperationMetadata.perLocationOperations[].error.message

string

A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the google.rpc.Status.details field, or localized by the client.
setCommonInstanceMetadataOperationMetadata.perLocationOperations[].error.details[]

object

A list of messages that carry the error details. There is a common set of message types for APIs to use.

An object containing fields of an arbitrary type. An additional field "@type" contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" }.
instancesBulkInsertOperationMetadata

object
instancesBulkInsertOperationMetadata.perLocationStatus[]

map (key: string, value: object)

Status information per location (location name is key). Example key: zones/us-central1-a
instancesBulkInsertOperationMetadata.perLocationStatus[].status

enum

[Output Only] Creation status of BulkInsert operation - information if the flow is rolling forward or rolling back.
instancesBulkInsertOperationMetadata.perLocationStatus[].targetVmCount

integer

[Output Only] Count of VMs originally planned to be created.
instancesBulkInsertOperationMetadata.perLocationStatus[].createdVmCount

integer

[Output Only] Count of VMs successfully created so far.
instancesBulkInsertOperationMetadata.perLocationStatus[].failedToCreateVmCount

integer

[Output Only] Count of VMs that started creating but encountered an error.
instancesBulkInsertOperationMetadata.perLocationStatus[].deletedVmCount

integer

[Output Only] Count of VMs that got deleted during rollback.

Authorization scopes

Requires one of the following OAuth scopes:

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

For more information, see the Authentication Overview.