Describe Load Balancer Target Groups

autoscaling_describe_load_balancer_target_groups

R Documentation

This API operation is superseded by DescribeTrafficSources, which can describe multiple traffic sources types¶

Description¶

This API operation is superseded by describe_traffic_sources, which can describe multiple traffic sources types. We recommend using detach_traffic_sources to simplify how you manage traffic sources. However, we continue to support describe_load_balancer_target_groups. You can use both the original describe_load_balancer_target_groups API operation and describe_traffic_sources 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 create_auto_scaling_group API call. If your target group state is InService, but it is not working properly, check the scaling activities by calling describe_scaling_activities 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 attach_load_balancer_target_groups, but not for target groups that were attached by using attach_traffic_sources.

Usage¶

autoscaling_describe_load_balancer_target_groups(AutoScalingGroupName,
  NextToken, MaxRecords)

Arguments¶

AutoScalingGroupName: [required] The name of the Auto Scaling group.
NextToken: The token for the next set of items to return. (You received this token from a previous call.)
MaxRecords: The maximum number of items to return with this call. The default value is 100 and the maximum value is 100.

Value¶

A list with the following syntax:

list(
  LoadBalancerTargetGroups = list(
    list(
      LoadBalancerTargetGroupARN = "string",
      State = "string"
    )
  ),
  NextToken = "string"
)

Request syntax¶

svc$describe_load_balancer_target_groups(
  AutoScalingGroupName = "string",
  NextToken = "string",
  MaxRecords = 123
)

Examples¶

## Not run: 
# This example describes the target groups attached to the specified Auto
# Scaling group.
svc$describe_load_balancer_target_groups(
  AutoScalingGroupName = "my-auto-scaling-group"
)

## End(Not run)