Day-4 | AWS & Azure - How to Create Virtual Machines | Free DevOps Course | 45 days |#devops #aws

Summary

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Takeaways

• 😀 AWS and Microsoft Azure both offer cloud services with virtual machine setup options.
• 😀 AWS provides a free tier for new users to try out resources without being charged for basic virtual machine configurations.
• 😀 Microsoft Azure offers a shorter free tier period compared to AWS (30-45 days).
• 😀 It's essential to create an AWS or Azure account, providing card details to verify authenticity, but there are no charges if using the free tier.
• 😀 For beginners in DevOps, Ubuntu is recommended as the operating system for virtual machines due to its popularity in the community.
• 😀 Key pairs (a combination of public and private keys) are crucial for accessing your EC2 instance securely via SSH on AWS.
• 😀 Always ensure to download and save your key pair securely, as losing it can prevent access to the instance.
• 😀 The process of creating and configuring virtual machines is manual initially, through a graphical user interface (UI), before moving on to automation techniques.
• 😀 AWS EC2 instances come with limited resources (1 CPU, 1GB memory) under the free tier, but more powerful options are available for paid plans.
• 😀 Azure integrates with GitHub for a faster and more seamless signup and login process, allowing easy access for GitHub users.
• 😀 In a future tutorial, automation of the virtual machine creation process will be covered, along with how to log in using the terminal.

Q & A

What are the initial steps to create an AWS account?

To create an AWS account, go to the AWS website and click on 'Create a New AWS Account'. You'll need to provide basic information such as email, password, and payment details for verification. AWS will deduct a small amount from your account (like 2 INR in India) for validation. After that, your account will be created, and you can access AWS services.

What is the importance of selecting a free-tier eligible instance in AWS?

Selecting a free-tier eligible instance ensures that you do not incur any charges while using the instance. Free-tier eligible instances have limited resources (e.g., 1 CPU and 1GB memory), but they allow you to experiment with AWS services without being billed, making it ideal for learning or testing purposes.

What is a key-value pair in AWS and why is it necessary?

A key-value pair in AWS is used for secure login to your EC2 instance. The key pair consists of a public key (stored by AWS) and a private key (downloaded to your local system). It’s essential to save the private key file as it is required to access the EC2 instance after it’s launched. Without this key, you cannot log into the instance.

How can you create an EC2 instance in AWS?

To create an EC2 instance, log into your AWS account, search for EC2 services, and click on 'Launch Instance'. After naming your instance and selecting an operating system (e.g., Ubuntu), choose the free-tier eligible option to avoid charges. Then, create a key-value pair and launch the instance. Once created, it will appear in the EC2 dashboard.

What operating system does the tutorial recommend for beginners learning DevOps?

The tutorial recommends using Ubuntu for beginners learning DevOps. It is widely used in the DevOps community and is a good choice for those starting with cloud services and virtual machines.

What is the difference between free-tier and paid instances in AWS?

Free-tier instances offer limited resources (e.g., 1 CPU and 1GB memory) at no charge. Paid instances allow for higher resource allocations, such as multiple CPUs and more memory, but incur costs based on usage. Free-tier instances are designed for users who want to learn or test without incurring charges.

How do you log into an EC2 instance after it has been created?

Once the EC2 instance is created, you can log in using the private key file generated during the key pair creation. You can either log in via the AWS Management Console (UI) or using a terminal, where you would use the private key for SSH access.

How does the process of creating a virtual machine on Azure compare to AWS?

The process of creating a virtual machine on Azure is similar to AWS. After signing up on the Azure portal, you can create a virtual machine by selecting resources, naming the instance, and choosing the operating system. Both platforms offer free trials, but AWS provides a longer free usage period compared to Azure, which has a shorter free membership.

What are the key differences between Azure and AWS free trials?

AWS provides a longer free trial (typically one year), allowing users to access many services without incurring charges. Azure offers a shorter free trial period, usually around 30-45 days, after which users must switch to a paid model if they want to continue using the services.

What should users be cautious about when using the AWS key-value pair?

Users must be cautious about saving and securing the private key of the key-value pair. If the private key is lost or not properly saved, it will be impossible to log into the EC2 instance. It's essential to download and store the key in a safe location immediately after creation.