EC2 + Keypair creation

Create key pairs - Amazon Elastic Compute Cloud

AWS::EC2::Instance - AWS CloudFormation

Objective

  • To create AWS KeyPair + EC2 using Cloudformation. (Using the default profile)

Create a CloudFormation Template:

Make a yaml file named ec2cfn.yaml. Added the below template. 

AWSTemplateFormatVersion: "2010-09-09"
Description: CFN+EC2+KeyPair
Resources:
  wynhkeypair:
    Type: 'AWS::EC2::KeyPair'
    Properties:
      KeyName: wynhkeypair
  Ec2Instance:
    Type: 'AWS::EC2::Instance'
    Properties:
      InstanceType: 't2.micro'
      AvailabilityZone: 'ap-southeast-1a'
      ImageId: 'ami-002843b0a9e09324a'
      KeyName: !Ref wynhkeypair

Run the code:

	aws cloudformation create-stack --stack-name ec2nkeypair --template-body file://ec2cfn.yaml

Output:

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The keypair(wynhkeypair) is attached.

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Describe the key pair:

aws ec2 describe-key-pairs --filters Name=key-name,Values=wynhkeypair --query KeyPairs[*].KeyPairId --output text

output:

key-052c483ed5bb4bf0d

Generate the **.pem file.**

aws ssm get-parameter --name /ec2/keypair/key-052c483ed5bb4bf0d --with-decryption --query Parameter.Value --output text > wynhpub.pem

Output:

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change the permission of the **.pem** key.

chmod 400 wynhpub.pem

Connecting the EC2 with created public key.

ssh -i wynhpub.pem ubuntu@13.212.216.237

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After the testing, we can clean up the testing stacks by running the following command:

aws cloudformation delete-stack --stack-name ec2nkeypair

!wq