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This API operation is superseded by DescribeTrafficSources, which can describe
multiple traffic sources types. We recommend using DescribeTrafficSources to
simplify how you manage traffic sources. However, we continue to support DescribeLoadBalancers.
You can use both the original DescribeLoadBalancers API operation and DescribeTrafficSources
on the same Auto Scaling group.
Gets information about the load balancers for the specified Auto Scaling group.
This operation describes only Classic Load Balancers. If you have Application Load Balancers, Network Load Balancers, or Gateway Load Balancers, use the DescribeLoadBalancerTargetGroups API instead.
To determine the attachment status of the load balancer, use the State element
in the response. When you attach a load balancer 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 load balancer. 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 load balancer
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 load balancer doesn't enter the InService state.
Load balancers also have an InService state if you attach them in the CreateAutoScalingGroup
API call. If your load balancer 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.
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 BeginDescribeLoadBalancers and EndDescribeLoadBalancers.
Namespace: Amazon.AutoScaling
Assembly: AWSSDK.AutoScaling.dll
Version: 3.x.y.z
public abstract Task<DescribeLoadBalancersResponse> DescribeLoadBalancersAsync( DescribeLoadBalancersRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the DescribeLoadBalancers 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