AWS Elastic Compute Cloud (EC2) contd..
Quick look at virtual machines
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Basic VM needs
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In AWS we have Regions, infrastructure is in zones (AZ)
- So we need to create our EC2 instance (VM) in the AZ
- In AWS
- to create an ec2 instance in a particular AZ we choose subnet
- to choose a particular operating system we choose Amazon Machine Image (AMI)
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Exercise: Lets try to create a RedHat Linux based EC2 instance in us-west-2a (AZ) with hard disk size of 12 GB, 1 VCPU and 1 GB of RAM
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To login into VM we need credentials i.e. username and password.
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In AWS default username is chosen based on AMI and AWS by default doesn’t allow passwords, so we need to use key based authentication
- We need to create a key pair.
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Once the EC2 instance is launched
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Network interfaces
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Virtual Hard disk is called as EBS (Elastic Block Store) Volume in AWS
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Virtual Machine is referred as EC2 instance
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In AWS virtual network is referred as Virtual Private Cloud (VPC) and default VPC is created in every region by AWS.
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In AWS to create an ec2 instance, we need to provide
- AMI
- size of the ec2 instance (number of VCPU and size of RAM)
- AZ in which you need to create ec2 (Subnet)
- Public IP should be enabled or not
- Size of the EBS Volume
- Security Group
- Key Pair to log in to the VM
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Exercise:
- Create a Windows 2016 server with 1 GB of RAM and 1 VCPU in any AZ of region Oregon.
