Creating a Basic Load Balancer in Amazon VPC

1. Start the Create Load Balancer wizard:

   1. In the Amazon EC2 Console Dashboard page, click Load Balancers in the Navigation pane.

      

   2. On the Load Balancers page, click Create Load Balancer.

2. On the DEFINE LOAD BALANCER page, enter a name for your Amazon VPC load balancer (e.g., MyVPCLoadBalancer).

3. Click the arrow in the Create LB inside box and select the virtual private cloud in which you want to create your load balancer.

4. Leave the Listener Configuration set to the default value.

   

5. Click Continue to configure the health check for your instances.

6. Configure the health check settings that your application requires.

   

7. Click Continue to select the subnet in which you want to launch your load balancer instance.

8. In the Available Subnets table, click the green button at the left to select the subnet in which you want to have your load balanced instances.

   

   Your selected subnets are displayed in the Selected Subnets table.

   

9. Click Continue to select security groups to assign to your load balancer.

10. If you use a pre-existing security group, ensure that it allows ingress to the ports that you configured the load balancer to use. If you create a security group in this step, the console will define these ports to be open for you. This example uses the default security group associated with your virtual private cloud.

    Select Choose one or more of your existing Security Groups and then select the default security group.

    

11. Click Continue to add running EC2 instances to your load balancer.

12. In the Manually Add Instances to LoadBalancer table, check the boxes in the Select column to add instances to your load balancer.

    

    	Note
    	When you register a multi-homed instance (an instance that has an Elastic Network Interface attached) with your load balancer, the load balancer will route traffic to the primary IP address of the instance (eth0). For more information on using Elastic Network Interfaces, go to Elastic Network Interfaces.

13. Click Continue to review your configuration. On the REVIEW page, click Create to create your load balancer.

To create a basic load balancer in your Amazon VPC

1. Call CreateLoadBalancer using the following parameters:

   • Subnets = subnet-450f512c

   • Listener

     • Protocol = HTTP

     • InstanceProtocol = HTTP

     • InstancePort = 8080

     • LoadBalancerPort = 80

   • LoadBalancerName = MyVPCLoadBalancer

   • SecurityGroups = sg-b9ffedd5

2. The operation returns the DNS name of your load balancer. You can then map any other domain name (such as www.example.com) to your load balancer’s DNS name using CNAME or some other technique.

To register your Amazon EC2 instances with your VPC load balancer

You should only register instances that are in the Pending or Running state and are in a Virtual Private Cloud (VPC).

• Call RegisterInstancesWithLoadBalancer with the following parameters:

  • LoadBalancerName = MyVPCLoadBalancer

  • Instances = [ i-4f8cf126, i-0bb7ca62 ]

To create a basic load balancer in your Amazon VPC

1. Enter the command elb-create-lb as in the following example.

   PROMPT> elb-create-lb  MyVPCLoadBalancer --subnets subnet-4e05f721  --groups sg-b9ffedd5 --listener "lb-port=80,instance-port=8080,protocol=http,instance-protocol=http" 
                           

2. Elastic Load Balancing returns the following:

   DNS-NAME  DNS-NAME 
   DNS-NAME  MyVPCLoadBalancer-2111276808.us-east-1a.elb.amazonaws.com

To register your Amazon EC2 instances with your VPC load balancer

You should only register instances that are in the Pending or Running state and are in a Virtual Private Cloud (VPC).

1. Use the elb-register-instances-with-lb command as in the following example.

   PROMPT> elb-register-instances-with-lb  MyVPCLoadBalancer  --instances i-4f8cf126,i-0bb7ca62

2. Elastic Load Balancing returns the following:

   INSTANCE  INSTANCE-ID
   INSTANCE  i-4f8cf126
   INSTANCE  i-0bb7ca62