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Assign Elastic IP

To attach an Elastic IP (static IP) to your instance, you will need to use the aws_eip header and make sure you define the instance it should be attached to using the instance ID.

AWS EIP

Here is how the aws_eip section should be configured to associate it with your instance.

aws_eip:
  <name-your-eip-header>:
    instance: '${aws_instance._<your-instance-name>_.id}'
    vpc: false

The vpc is an optional boolean value to indicate whether your instance is in a VPC or not

Full Stack Example

Here is a stack that creates one VM and associates an Elastic IP to this particular VM. Notice that the VM name is the same name used in the aws_eip section to retireve the instance ID

# This stack creates a single instance
# and associate an EIP to this instance

provider:
  aws:
    access_key: '${var.aws_access_key}'
    secret_key: '${var.aws_secret_key}'
resource:
  aws_instance:
    my-server:
      instance_type: t2.nano
  aws_eip:
    my-server-eip:
      instance: '${aws_instance.my-server.id}'
      vpc: false

After your VM starts, you can retrieve the instance EIP using the below command (use the exact command, please do not change the IP, this is an Amazon provided URL to retrieve your VM IP address). Please note that the VM public IP will no longer be valid at this point, and you will need to use the EIP

curl http://169.254.169.254/latest/meta-data/public-ipv4  </instance-name>
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