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Amazon EC2 Cookbook

Amazon EC2 Cookbook

By : Sekhar Reddy
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Amazon EC2 Cookbook

Amazon EC2 Cookbook

By: Sekhar Reddy

Overview of this book

Discover how to perform a complete forensic investigation of large-scale Hadoop clusters using the same tools and techniques employed by forensic experts. This book begins by taking you through the process of forensic investigation and the pitfalls to avoid. It will walk you through Hadoop’s internals and architecture, and you will discover what types of information Hadoop stores and how to access that data. You will learn to identify Big Data evidence using techniques to survey a live system and interview witnesses. After setting up your own Hadoop system, you will collect evidence using techniques such as forensic imaging and application-based extractions. You will analyze Hadoop evidence using advanced tools and techniques to uncover events and statistical information. Finally, data visualization and evidence presentation techniques are covered to help you properly communicate your findings to any audience.
Table of Contents (10 chapters)
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9
Index

Allocating Elastic IP addresses

Elastic IP (EIP) address is the static public IP address. You can attach and detach the EIP from EC2 instance at any time. Instances in EC2-Classic support only one private IP address and corresponding EIP. Instances in EC2-VPC support multiple private IP addresses, and each one can have a corresponding EIP. If you stop the instance in EC2-Classic the EIP is disassociated from instance, and you have to associate it again when you start the instance. But if you stop the instance in EC2-VPC, the EIP remains associated with the EC2 instance.

In this recipe, we list the commands for allocating an Elastic IP address in a VPC and associating it with the network interface.

How to do it…

For allocating EIP addresses, perform the following steps:

  1. Run the following command to allocate the EIP:
    $ aws ec2 allocate-address 
    --domain [Domain]
    

    You have to specify whether domain is standard or VPC. Record the allocation ID for further use.

    Domain value indicates whether the EIP address is used with instances in EC2-Classic (standard) or instances in a EC2-VPC (VPC).

  2. Next, run the following command to create the EIP in VPC:
    $ aws ec2 allocate-address --domain vpc
    
  3. Then, run the following command to associate the EIP to the Elastic Network Interface (ENI):
    $ aws ec2 associate-address 
    --network-interface-id [NetworkInterfaceId]
    --allocation-id [AllocationId]
    

    You need to provide the network interface ID of the ENI and allocation ID of the EIP you obtained in step 1. If you don't specify the private IP address, then the Elastic IP address is associated with the primary IP address.

    The parameters used in this command are described here:

    • [NetworkInterfaceId]: This gives the ENI ID to attach
    • [AllocationId]: This provides the allocation ID of the EIP for EC2-VPC
  4. Finally, run the following command to associate the EIP to ENI:
    $ aws ec2 associate-address 
    --network-interface-id eni-d68df2b3 
    --allocation-id eipalloc-82e0ffe0
    

See also

  • The Creating an instance with multiple NIC cards and a static private IP address recipe
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