This API operation is superseded by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 cmdlet automatically pages all available results to the pipeline - parameters related to iteration are only needed if you want to manually control the paginated output. To disable autopagination, use -NoAutoIteration.