Modifying an Elastic Load Balancing Configuration

Elastic load balancing requires two basic elements to function properly: a load balancer and instances registered with that load balancer. The following examples show how to modify the basic elements of an elastic load balancer configuration.

De-register instances from the Load Balancer

The load balancer monitors the health of registered instances, and balances incoming traffic across the healthy instances.

To deregister an instance from the load balancer:

Enter the following command:

eulb-deregister-instances-from-lb --instances INSTANCE1,INSTANCE2,... MyLoadBalancer

Enter the following command to verify that the instances are deregistered from the load balancer:
eulb-describe-instance-health MyLoadBalancer
This command will return output similar to the following:
```
INSTANCE	i-6FAD3F7B	InService
```

Delete Load Balancer Listeners

To delete a load balancer listener:

Enter the following command:

eulb-delete-lb-listeners --lb-ports PORT1,PORT2,... MyLoadBalancer

Delete Load Balancer

To delete a load balancer:

Enter the following command:

eulb-delete-lb MyLoadBalancer

You've now deleted the elastic load balancer.

Parent topic: Eucalyptus Load Balancing Usage Examples