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This API operation is superseded by DescribeTrafficSources, which can describe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.
This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginDescribeLoadBalancerTargetGroups and EndDescribeLoadBalancerTargetGroups.
Namespace: Amazon.AutoScaling
Assembly: AWSSDK.AutoScaling.dll
Version: 3.x.y.z
public virtual Task<DescribeLoadBalancerTargetGroupsResponse> DescribeLoadBalancerTargetGroupsAsync( DescribeLoadBalancerTargetGroupsRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the DescribeLoadBalancerTargetGroups service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| InvalidNextTokenException | The NextToken value is not valid. |
| ResourceContentionException | You already have a pending update to an Amazon EC2 Auto Scaling resource (for example, an Auto Scaling group, instance, or load balancer). |
.NET Core App:
Supported in: 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5