openapi: 3.0.0 info: version: 2011-01-01 x-release: v4 title: 'Auto Scaling #Action=AttachInstances #Action=AttachInstances #Action=DescribeLoadBalancerTargetGroups API' description: Amazon EC2 Auto Scaling

Amazon EC2 Auto Scaling is designed to automatically launch and terminate EC2 instances based on user-defined scaling policies, scheduled actions, and health checks.

For more information, see the Amazon EC2 Auto Scaling User Guide and the Amazon EC2 Auto Scaling API Reference.

x-logo: url: https://api.apis.guru/v2/cache/logo/https_twitter.com_awscloud_profile_image.png backgroundColor: '#FFFFFF' termsOfService: https://aws.amazon.com/service-terms/ contact: name: Mike Ralphson email: mike.ralphson@gmail.com url: https://github.com/mermade/aws2openapi x-twitter: PermittedSoc license: name: Apache 2.0 License url: http://www.apache.org/licenses/ x-providerName: amazonaws.com x-serviceName: autoscaling x-origin: - contentType: application/json url: https://raw.githubusercontent.com/aws/aws-sdk-js/master/apis/autoscaling-2011-01-01.normal.json converter: url: https://github.com/mermade/aws2openapi version: 1.0.0 x-apisguru-driver: external x-apiClientRegistration: url: https://portal.aws.amazon.com/gp/aws/developer/registration/index.html?nc2=h_ct x-apisguru-categories: - cloud x-preferred: true servers: - url: http://autoscaling.{region}.amazonaws.com variables: region: description: The AWS region enum: - us-east-1 - us-east-2 - us-west-1 - us-west-2 - us-gov-west-1 - us-gov-east-1 - ca-central-1 - eu-north-1 - eu-west-1 - eu-west-2 - eu-west-3 - eu-central-1 - eu-south-1 - af-south-1 - ap-northeast-1 - ap-northeast-2 - ap-northeast-3 - ap-southeast-1 - ap-southeast-2 - ap-east-1 - ap-south-1 - sa-east-1 - me-south-1 default: us-east-1 description: The Auto Scaling multi-region endpoint - url: https://autoscaling.{region}.amazonaws.com variables: region: description: The AWS region enum: - us-east-1 - us-east-2 - us-west-1 - us-west-2 - us-gov-west-1 - us-gov-east-1 - ca-central-1 - eu-north-1 - eu-west-1 - eu-west-2 - eu-west-3 - eu-central-1 - eu-south-1 - af-south-1 - ap-northeast-1 - ap-northeast-2 - ap-northeast-3 - ap-southeast-1 - ap-southeast-2 - ap-east-1 - ap-south-1 - sa-east-1 - me-south-1 default: us-east-1 description: The Auto Scaling multi-region endpoint - url: http://autoscaling.amazonaws.com variables: {} description: The general Auto Scaling endpoint for US East (N. Virginia) - url: https://autoscaling.amazonaws.com variables: {} description: The general Auto Scaling endpoint for US East (N. Virginia) - url: http://autoscaling.{region}.amazonaws.com.cn variables: region: description: The AWS region enum: - cn-north-1 - cn-northwest-1 default: cn-north-1 description: The Auto Scaling endpoint for China (Beijing) and China (Ningxia) - url: https://autoscaling.{region}.amazonaws.com.cn variables: region: description: The AWS region enum: - cn-north-1 - cn-northwest-1 default: cn-north-1 description: The Auto Scaling endpoint for China (Beijing) and China (Ningxia) security: - hmac: [] tags: - name: '#Action=DescribeLoadBalancerTargetGroups' paths: /#Action=DescribeLoadBalancerTargetGroups: parameters: - $ref: '#/components/parameters/X-Amz-Content-Sha256' - $ref: '#/components/parameters/X-Amz-Date' - $ref: '#/components/parameters/X-Amz-Algorithm' - $ref: '#/components/parameters/X-Amz-Credential' - $ref: '#/components/parameters/X-Amz-Security-Token' - $ref: '#/components/parameters/X-Amz-Signature' - $ref: '#/components/parameters/X-Amz-SignedHeaders' get: x-aws-operation-name: DescribeLoadBalancerTargetGroups operationId: GET_DescribeLoadBalancerTargetGroups description: '

This API operation is superseded by DescribeTrafficSources, which can describe multiple traffic sources types. We recommend using DetachTrafficSources to simplify how you manage traffic sources. However, we continue to support DescribeLoadBalancerTargetGroups. You can use both the original DescribeLoadBalancerTargetGroups API operation and DescribeTrafficSources on the same Auto Scaling group.

Gets information about the Elastic Load Balancing target groups for the specified Auto Scaling group.

To determine the attachment status of the target group, use the State element in the response. When you attach a target group to an Auto Scaling group, the initial State value is Adding. The state transitions to Added after all Auto Scaling instances are registered with the target group. If Elastic Load Balancing health checks are enabled for the Auto Scaling group, the state transitions to InService after at least one Auto Scaling instance passes the health check. When the target group is in the InService state, Amazon EC2 Auto Scaling can terminate and replace any instances that are reported as unhealthy. If no registered instances pass the health checks, the target group doesn''t enter the InService state.

Target groups also have an InService state if you attach them in the CreateAutoScalingGroup API call. If your target group state is InService, but it is not working properly, check the scaling activities by calling DescribeScalingActivities and take any corrective actions necessary.

For help with failed health checks, see Troubleshooting Amazon EC2 Auto Scaling: Health checks in the Amazon EC2 Auto Scaling User Guide. For more information, see Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

You can use this operation to describe target groups that were attached by using AttachLoadBalancerTargetGroups, but not for target groups that were attached by using AttachTrafficSources.

' responses: '200': description: Success content: text/xml: schema: $ref: '#/components/schemas/DescribeLoadBalancerTargetGroupsResponse' examples: GET_DescribeLoadBalancerTargetGroups200Example: summary: Default GET_DescribeLoadBalancerTargetGroups 200 response x-microcks-default: true value: LoadBalancerTargetGroups: example-string NextToken: example-string '480': description: ResourceContentionFault content: text/xml: schema: $ref: '#/components/schemas/ResourceContentionFault' examples: GET_DescribeLoadBalancerTargetGroups480Example: summary: Default GET_DescribeLoadBalancerTargetGroups 480 response x-microcks-default: true value: {} '481': description: InvalidNextToken content: text/xml: schema: $ref: '#/components/schemas/InvalidNextToken' examples: GET_DescribeLoadBalancerTargetGroups481Example: summary: Default GET_DescribeLoadBalancerTargetGroups 481 response x-microcks-default: true value: {} parameters: - name: AutoScalingGroupName in: query required: true description: The name of the Auto Scaling group. schema: type: string minLength: 1 maxLength: 255 x-pattern: '[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*' - name: NextToken in: query required: false description: The token for the next set of items to return. (You received this token from a previous call.) schema: type: string x-pattern: '[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*' - name: MaxRecords in: query required: false description: The maximum number of items to return with this call. The default value is 100 and the maximum value is 100. schema: type: integer - name: Action in: query required: true schema: type: string enum: - DescribeLoadBalancerTargetGroups - name: Version in: query required: true schema: type: string enum: - 2011-01-01 summary: Amazon EC2 Auto Scaling GET_ Describe Load Balancer Target Groups x-microcks-operation: delay: 0 dispatcher: FALLBACK tags: - '#Action=DescribeLoadBalancerTargetGroups' post: x-aws-operation-name: DescribeLoadBalancerTargetGroups operationId: POST_DescribeLoadBalancerTargetGroups description: '

This API operation is superseded by DescribeTrafficSources, which can describe multiple traffic sources types. We recommend using DetachTrafficSources to simplify how you manage traffic sources. However, we continue to support DescribeLoadBalancerTargetGroups. You can use both the original DescribeLoadBalancerTargetGroups API operation and DescribeTrafficSources on the same Auto Scaling group.

Gets information about the Elastic Load Balancing target groups for the specified Auto Scaling group.

To determine the attachment status of the target group, use the State element in the response. When you attach a target group to an Auto Scaling group, the initial State value is Adding. The state transitions to Added after all Auto Scaling instances are registered with the target group. If Elastic Load Balancing health checks are enabled for the Auto Scaling group, the state transitions to InService after at least one Auto Scaling instance passes the health check. When the target group is in the InService state, Amazon EC2 Auto Scaling can terminate and replace any instances that are reported as unhealthy. If no registered instances pass the health checks, the target group doesn''t enter the InService state.

Target groups also have an InService state if you attach them in the CreateAutoScalingGroup API call. If your target group state is InService, but it is not working properly, check the scaling activities by calling DescribeScalingActivities and take any corrective actions necessary.

For help with failed health checks, see Troubleshooting Amazon EC2 Auto Scaling: Health checks in the Amazon EC2 Auto Scaling User Guide. For more information, see Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

You can use this operation to describe target groups that were attached by using AttachLoadBalancerTargetGroups, but not for target groups that were attached by using AttachTrafficSources.

' responses: '200': description: Success content: text/xml: schema: $ref: '#/components/schemas/DescribeLoadBalancerTargetGroupsResponse' examples: POST_DescribeLoadBalancerTargetGroups200Example: summary: Default POST_DescribeLoadBalancerTargetGroups 200 response x-microcks-default: true value: LoadBalancerTargetGroups: example-string NextToken: example-string '480': description: ResourceContentionFault content: text/xml: schema: $ref: '#/components/schemas/ResourceContentionFault' examples: POST_DescribeLoadBalancerTargetGroups480Example: summary: Default POST_DescribeLoadBalancerTargetGroups 480 response x-microcks-default: true value: {} '481': description: InvalidNextToken content: text/xml: schema: $ref: '#/components/schemas/InvalidNextToken' examples: POST_DescribeLoadBalancerTargetGroups481Example: summary: Default POST_DescribeLoadBalancerTargetGroups 481 response x-microcks-default: true value: {} requestBody: content: text/xml: schema: $ref: '#/components/schemas/DescribeLoadBalancerTargetGroupsRequest' parameters: - name: Action in: query required: true schema: type: string enum: - DescribeLoadBalancerTargetGroups - name: Version in: query required: true schema: type: string enum: - 2011-01-01 summary: Amazon EC2 Auto Scaling POST_ Describe Load Balancer Target Groups x-microcks-operation: delay: 0 dispatcher: FALLBACK tags: - '#Action=DescribeLoadBalancerTargetGroups' components: schemas: XmlString: type: string x-pattern: '[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*' XmlStringMaxLen255: type: string minLength: 1 maxLength: 255 x-pattern: '[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*' InvalidNextToken: {} DescribeLoadBalancerTargetGroupsResponse: type: object example: LoadBalancerTargetGroups: - LoadBalancerTargetGroupARN: arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067 State: Added properties: LoadBalancerTargetGroups: allOf: - $ref: '#/components/schemas/LoadBalancerTargetGroupStates' - description: Information about the target groups. example: example-string NextToken: allOf: - $ref: '#/components/schemas/XmlString' - description: A string that indicates that the response contains more items than can be returned in a single response. To receive additional items, specify this string for the NextToken value when requesting the next set of items. This value is null when there are no more items to return. example: example-string DescribeLoadBalancerTargetGroupsRequest: type: object required: - AutoScalingGroupName title: DescribeLoadBalancerTargetGroupsRequest properties: AutoScalingGroupName: allOf: - $ref: '#/components/schemas/XmlStringMaxLen255' - description: The name of the Auto Scaling group. NextToken: allOf: - $ref: '#/components/schemas/XmlString' - description: The token for the next set of items to return. (You received this token from a previous call.) MaxRecords: allOf: - $ref: '#/components/schemas/MaxRecords' - description: The maximum number of items to return with this call. The default value is 100 and the maximum value is 100. XmlStringMaxLen511: type: string minLength: 1 maxLength: 511 x-pattern: '[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*' MaxRecords: type: integer ResourceContentionFault: {} LoadBalancerTargetGroupState: type: object properties: LoadBalancerTargetGroupARN: allOf: - $ref: '#/components/schemas/XmlStringMaxLen511' - description: The Amazon Resource Name (ARN) of the target group. State: allOf: - $ref: '#/components/schemas/XmlStringMaxLen255' - description:

The state of the target group.

description: Describes the state of a target group. LoadBalancerTargetGroupStates: type: array items: $ref: '#/components/schemas/LoadBalancerTargetGroupState' parameters: X-Amz-Credential: name: X-Amz-Credential in: header schema: type: string required: false X-Amz-SignedHeaders: name: X-Amz-SignedHeaders in: header schema: type: string required: false X-Amz-Security-Token: name: X-Amz-Security-Token in: header schema: type: string required: false X-Amz-Content-Sha256: name: X-Amz-Content-Sha256 in: header schema: type: string required: false X-Amz-Date: name: X-Amz-Date in: header schema: type: string required: false X-Amz-Signature: name: X-Amz-Signature in: header schema: type: string required: false X-Amz-Algorithm: name: X-Amz-Algorithm in: header schema: type: string required: false securitySchemes: hmac: type: apiKey name: Authorization in: header description: Amazon Signature authorization v4 x-amazon-apigateway-authtype: awsSigv4 externalDocs: description: Amazon Web Services documentation url: https://docs.aws.amazon.com/autoscaling/ x-hasEquivalentPaths: true