By Anthony Sequeira
With any AWS implementation, time really is money.
You need to get things moving as quickly and efficiently as possible from the get-go, but where do you start when you’re working with Infrastructure as a Service (IaaS)-type functions in the public cloud? Let’s look at a sample AWS implementation guide together.
Don’t forget that IaaS refers to the use of the cloud for hosting the networking, servers, and different devices required to provide a full Information Technology (IT) infrastructure. IaaS is just one of the many potential ‘as a service’ offerings that we have today with the cloud, but a prevalent one.
When you sign up for AWS (typically with a Free Tier account), you indicate the email address that is used to login to AWS for root account access.
This email address represents the most powerful account in the Identity and Access Management (IAM) system of AWS. It can not only configure every aspect of every service in AWS but also manage things like payment and billing.
As a result of the incredible power of this account, it’s recommended that you use it as sparingly as possible. For example, you should quickly create another account for yourself in AWS IAM and make that account an AWS administrator account.
You can then use that account instead of the AWS root account for the day-to-day administration of your infrastructure; you might even create more accounts for yourself with varying privilege levels and use those accounts as required for the various tasks you assign the accounts permission over.
If, for instance, you have an account for yourself that has full administrative rights over the Simple Storage Service (S3) of AWS, you’d use that account when you need to work with S3. This approach is part of a robust security design called the Least Privilege concept.
Figure 1: The IAM Dashboard
Notice in this example how I have:
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While it is amazing that you can have your own IT infrastructure in the cloud, you certainly want privacy (when required), and you need to have full control over your networking components. Amazon provides this capability thanks to the Virtual Private Cloud (VPC).
When you create your AWS account, AWS creates your default VPC for you. This default VPC consists of the following components:
Some AWS architects recommend leaving these default constructs intact and not using them for anything.
They design a new, custom VPC from the ground up with the exact specifications they need. Others gladly use the default VPC and modify it for their needs—it really is up to you, and I have done both successfully in the past.
Figure 2: A Default VPC
When it comes to your server needs, the sky is the limit! AWS provides Amazon Machine Images (AMIs) to quickly spin up Elastic Compute Cloud (EC2) images. You can easily size these virtual machines on appropriate hardware platforms (called instances) to ensure your servers can access the required amount of RAM, CPU, disk, network capacity, and more.
One of the reasons that architecting servers on AWS is so exciting is the fact that you can easily scale your server footprint as demand increases, or even shrinks. This property is called elasticity and is a major reason why cloud technologies are so incredibly popular.
One very exciting area of AWS that is exploding in popularity is called serverless computing.
The primary serverless compute service in AWS is called Lambda. In this design model, you don’t need to worry about spinning up virtual machines or maintaining them at all; instead, AWS provides compute resources for you when you need them based on function calls from your various applications.
This solution almost sounds too good to be true, especially when you consider that it can be very affordable and scalable.
Lambda currently offers 1,000,000 free requests per month and up to 3.2 million seconds of compute time per month.
Another great advantage of using AWS for IaaS is the variety of options that exist for affordable and scalable storage.
Let’s run through some of the major storage services of AWS and make sure you understand the intent of each:
AWS also provides you with many options for database services. These include:
With so many rich services at our fingertips, it’s no wonder that AWS popularity is surging. Remember, while we’ve explored the core services that you’ll find in any IaaS implementation, there are countless other services that could take your infrastructure to new and exciting heights.
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About the author
Anthony Sequeira, CCIE No. 15626, is a seasoned trainer and author regarding various levels and tracks of Cisco, Microsoft, Juniper, and AWS certifications.
In 1994, Anthony formally began his career in the information technology industry with IBM in Tampa, Florida. He quickly formed his own computer consultancy and discovered his true passion—teaching and writing about information technologies. He is a full-time instructor at CBT Nuggets.
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