[Yandex Cloud documentation](../../../../index.md) > [Yandex Audit Trails](../../../index.md) > Audit log reference > loadbalancer > AttachNetworkLoadBalancerTargetGroup

# Network Load Balancer Audit Trails Events: AttachNetworkLoadBalancerTargetGroup

## Event JSON schema {#yandex.cloud.audit.loadbalancer.AttachNetworkLoadBalancerTargetGroup2-schema}

```json
{
  "eventId": "string",
  "eventSource": "string",
  "eventType": "string",
  "eventTime": "string",
  "authentication": {
    "authenticated": "boolean",
    // Includes only one of the fields `subjectType`
    "subjectType": "string",
    // end of the list of possible fields
    // Includes only one of the fields `subjectId`
    "subjectId": "string",
    // end of the list of possible fields
    // Includes only one of the fields `subjectName`
    "subjectName": "string",
    // end of the list of possible fields
    // Includes only one of the fields `federationId`
    "federationId": "string",
    // end of the list of possible fields
    // Includes only one of the fields `federationName`
    "federationName": "string",
    // end of the list of possible fields
    // Includes only one of the fields `federationType`
    "federationType": "string",
    // end of the list of possible fields
    "tokenInfo": {
      "maskedIamToken": "string",
      // Includes only one of the fields `iamTokenId`
      "iamTokenId": "string",
      // end of the list of possible fields
      // Includes only one of the fields `impersonatorId`
      "impersonatorId": "string",
      // end of the list of possible fields
      // Includes only one of the fields `impersonatorType`
      "impersonatorType": "string",
      // end of the list of possible fields
      // Includes only one of the fields `impersonatorName`
      "impersonatorName": "string",
      // end of the list of possible fields
      // Includes only one of the fields `impersonatorFederationId`
      "impersonatorFederationId": "string",
      // end of the list of possible fields
      // Includes only one of the fields `impersonatorFederationName`
      "impersonatorFederationName": "string",
      // end of the list of possible fields
      // Includes only one of the fields `impersonatorFederationType`
      "impersonatorFederationType": "string"
      // end of the list of possible fields
    }
  },
  "authorization": {
    "authorized": "boolean"
  },
  "resourceMetadata": {
    "path": [
      {
        "resourceType": "string",
        "resourceId": "string",
        // Includes only one of the fields `resourceName`
        "resourceName": "string"
        // end of the list of possible fields
      }
    ]
  },
  "requestMetadata": {
    "remoteAddress": "string",
    "userAgent": "string",
    "requestId": "string",
    // Includes only one of the fields `remotePort`
    "remotePort": "string"
    // end of the list of possible fields
  },
  "eventStatus": "string",
  "error": {
    "code": "integer",
    "message": "string",
    "details": [
      "object"
    ]
  },
  "details": {
    "networkLoadBalancerId": "string",
    "networkLoadBalancerName": "string",
    "targetGroupId": "string",
    "targetGroupName": "string",
    "healthChecks": [
      {
        "name": "string",
        "interval": "string",
        "timeout": "string",
        "unhealthyThreshold": "string",
        "healthyThreshold": "string",
        // Includes only one of the fields `tcpOptions`, `httpOptions`
        "tcpOptions": {
          "port": "string"
        },
        "httpOptions": {
          "port": "string",
          "path": "string"
        }
        // end of the list of possible fields
      }
    ],
    "attachedTargetGroups": [
      {
        "targetGroupId": "string",
        "healthChecks": [
          {
            "name": "string",
            "interval": "string",
            "timeout": "string",
            "unhealthyThreshold": "string",
            "healthyThreshold": "string",
            // Includes only one of the fields `tcpOptions`, `httpOptions`
            "tcpOptions": {
              "port": "string"
            },
            "httpOptions": {
              "port": "string",
              "path": "string"
            }
            // end of the list of possible fields
          }
        ]
      }
    ],
    "targetGroup": {
      "id": "string",
      "folderId": "string",
      "createdAt": "string",
      "name": "string",
      "description": "string",
      "labels": "object",
      "regionId": "string",
      "targets": [
        {
          "subnetId": "string",
          "address": "string"
        }
      ]
    }
  },
  "requestParameters": "object",
  "response": "object"
}
```

## Field description {#yandex.cloud.audit.loadbalancer.AttachNetworkLoadBalancerTargetGroup2}

#|
||Field | Description ||
|| eventId | **string** ||
|| eventSource | **string** ||
|| eventType | **string** ||
|| eventTime | **string** (date-time)

String in [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format. The range of possible values is from
`0001-01-01T00:00:00Z` to `9999-12-31T23:59:59.999999999Z`, i.e. from 0 to 9 digits for fractions of a second.

To work with values in this field, use the APIs described in the
[Protocol Buffers reference](https://developers.google.com/protocol-buffers/docs/reference/overview).
In some languages, built-in datetime utilities do not support nanosecond precision (9 digits). ||
|| authentication | **[IamAuthentication](#yandex.cloud.audit.IamAuthentication)** ||
|| authorization | **[Authorization](#yandex.cloud.audit.Authorization)** ||
|| resourceMetadata | **[ResourceMetadata](#yandex.cloud.audit.ResourceMetadata)** ||
|| requestMetadata | **[RequestMetadata](#yandex.cloud.audit.RequestMetadata)** ||
|| eventStatus | **enum** (EventStatus)

- `STARTED`
- `ERROR`
- `DONE`
- `CANCELLED`
- `RUNNING` ||
|| error | **[Status](#google.rpc.Status)**

The error result of the operation in case of failure or cancellation. ||
|| details | **[EventDetails](#yandex.cloud.audit.loadbalancer.AttachNetworkLoadBalancerTargetGroup.EventDetails)** ||
|| requestParameters | **object** ||
|| response | **object** ||
|#

## IamAuthentication {#yandex.cloud.audit.IamAuthentication}

#|
||Field | Description ||
|| authenticated | **boolean** ||
|| subjectType | **enum** (IamSubjectType)

Includes only one of the fields `subjectType`.

- `YANDEX_PASSPORT_USER_ACCOUNT`
- `SERVICE_ACCOUNT`
- `FEDERATED_USER_ACCOUNT`
- `SSH_USER`
- `KUBERNETES_USER` ||
|| subjectId | **string**

Includes only one of the fields `subjectId`. ||
|| subjectName | **string**

Includes only one of the fields `subjectName`. ||
|| federationId | **string**

Includes only one of the fields `federationId`. ||
|| federationName | **string**

Includes only one of the fields `federationName`. ||
|| federationType | **enum** (FederationType)

Includes only one of the fields `federationType`.

- `GLOBAL_FEDERATION`
- `PRIVATE_FEDERATION` ||
|| tokenInfo | **[IamTokenInfo](#yandex.cloud.audit.IamAuthentication.IamTokenInfo)** ||
|#

## IamTokenInfo {#yandex.cloud.audit.IamAuthentication.IamTokenInfo}

#|
||Field | Description ||
|| maskedIamToken | **string** ||
|| iamTokenId | **string**

Includes only one of the fields `iamTokenId`. ||
|| impersonatorId | **string**

Includes only one of the fields `impersonatorId`. ||
|| impersonatorType | **enum** (IamSubjectType)

Includes only one of the fields `impersonatorType`.

- `YANDEX_PASSPORT_USER_ACCOUNT`
- `SERVICE_ACCOUNT`
- `FEDERATED_USER_ACCOUNT`
- `SSH_USER`
- `KUBERNETES_USER` ||
|| impersonatorName | **string**

Includes only one of the fields `impersonatorName`. ||
|| impersonatorFederationId | **string**

Includes only one of the fields `impersonatorFederationId`. ||
|| impersonatorFederationName | **string**

Includes only one of the fields `impersonatorFederationName`. ||
|| impersonatorFederationType | **enum** (FederationType)

Includes only one of the fields `impersonatorFederationType`.

- `GLOBAL_FEDERATION`
- `PRIVATE_FEDERATION` ||
|#

## Authorization {#yandex.cloud.audit.Authorization}

#|
||Field | Description ||
|| authorized | **boolean** ||
|#

## ResourceMetadata {#yandex.cloud.audit.ResourceMetadata}

#|
||Field | Description ||
|| path[] | **[Resource](#yandex.cloud.audit.Resource)** ||
|#

## Resource {#yandex.cloud.audit.Resource}

#|
||Field | Description ||
|| resourceType | **string** ||
|| resourceId | **string** ||
|| resourceName | **string**

Includes only one of the fields `resourceName`. ||
|#

## RequestMetadata {#yandex.cloud.audit.RequestMetadata}

#|
||Field | Description ||
|| remoteAddress | **string** ||
|| userAgent | **string** ||
|| requestId | **string** ||
|| remotePort | **string** (int64)

Includes only one of the fields `remotePort`. ||
|#

## Status {#google.rpc.Status}

The error result of the operation in case of failure or cancellation.

#|
||Field | Description ||
|| code | **integer** (int32)

Error code. An enum value of [google.rpc.Code](https://github.com/googleapis/googleapis/blob/master/google/rpc/code.proto). ||
|| message | **string**

An error message. ||
|| details[] | **object**

A list of messages that carry the error details. ||
|#

## EventDetails {#yandex.cloud.audit.loadbalancer.AttachNetworkLoadBalancerTargetGroup.EventDetails}

#|
||Field | Description ||
|| networkLoadBalancerId | **string** ||
|| networkLoadBalancerName | **string** ||
|| targetGroupId | **string** ||
|| targetGroupName | **string** ||
|| healthChecks[] | **[HealthCheck](#yandex.cloud.loadbalancer.v1.HealthCheck)** ||
|| attachedTargetGroups[] | **[AttachedTargetGroup](#yandex.cloud.loadbalancer.v1.AttachedTargetGroup)** ||
|| targetGroup | **[TargetGroup](#yandex.cloud.loadbalancer.v1.TargetGroup)** ||
|#

## HealthCheck {#yandex.cloud.loadbalancer.v1.HealthCheck}

#|
||Field | Description ||
|| name | **string** ||
|| interval | **string** (duration) ||
|| timeout | **string** (duration) ||
|| unhealthyThreshold | **string** (int64) ||
|| healthyThreshold | **string** (int64) ||
|| tcpOptions | **[TcpOptions](#yandex.cloud.loadbalancer.v1.HealthCheck.TcpOptions)**

Includes only one of the fields `tcpOptions`, `httpOptions`. ||
|| httpOptions | **[HttpOptions](#yandex.cloud.loadbalancer.v1.HealthCheck.HttpOptions)**

Includes only one of the fields `tcpOptions`, `httpOptions`. ||
|#

## TcpOptions {#yandex.cloud.loadbalancer.v1.HealthCheck.TcpOptions}

#|
||Field | Description ||
|| port | **string** (int64) ||
|#

## HttpOptions {#yandex.cloud.loadbalancer.v1.HealthCheck.HttpOptions}

#|
||Field | Description ||
|| port | **string** (int64) ||
|| path | **string** ||
|#

## AttachedTargetGroup {#yandex.cloud.loadbalancer.v1.AttachedTargetGroup}

#|
||Field | Description ||
|| targetGroupId | **string** ||
|| healthChecks[] | **[HealthCheck](#yandex.cloud.loadbalancer.v1.HealthCheck)** ||
|#

## TargetGroup {#yandex.cloud.loadbalancer.v1.TargetGroup}

#|
||Field | Description ||
|| id | **string** ||
|| folderId | **string** ||
|| createdAt | **string** (date-time)

String in [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) text format. The range of possible values is from
`0001-01-01T00:00:00Z` to `9999-12-31T23:59:59.999999999Z`, i.e. from 0 to 9 digits for fractions of a second.

To work with values in this field, use the APIs described in the
[Protocol Buffers reference](https://developers.google.com/protocol-buffers/docs/reference/overview).
In some languages, built-in datetime utilities do not support nanosecond precision (9 digits). ||
|| name | **string** ||
|| description | **string** ||
|| labels | **object** (map<**string**, **string**>) ||
|| regionId | **string** ||
|| targets[] | **[Target](#yandex.cloud.loadbalancer.v1.Target)** ||
|#

## Target {#yandex.cloud.loadbalancer.v1.Target}

#|
||Field | Description ||
|| subnetId | **string** ||
|| address | **string** ||
|#