puppet.txt

1. Prerequisites

Ubuntu EC2 instance (Puppet Master/Controller)
AWS credentials configured (aws configure)
IAM Role or User with EC2 permissions
Security Group and Subnet IDs ready
Existing Key Pair (mykey1) in us-east-1 region

2. Install Puppet
curl -O https://apt.puppet.com/puppet7-release-focal.deb
sudo dpkg -i puppet7-release-focal.deb
sudo apt update
sudo apt install puppet -y


---Confirm:
which puppet
puppet --version


3. Install AWS CLI
sudo apt install unzip -y
curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install


---Confirm:
which aws
aws --version

4. Configure AWS Credentials
aws configure

***********
AWS Access Key ID
AWS Secret Access Key
Region: us-east-1
Output format: json

5. Create the Puppet Manifest
sudo nano /root/launch_ec2.pp
##########################################

exec { 'launch_ec2_instance':
  command => '/usr/local/bin/aws ec2 run-instances \
    --image-id ami-0c2b8ca1dad447f8a \
    --count 1 \
    --instance-type t2.micro \
    --key-name mykey1 \
    --subnet-id subnet-0ed36d7d9aeb640a4 \
    --security-group-ids sg-077bb35267f65c5cc \
    --region us-east-1 \
    --tag-specifications "ResourceType=instance,Tags=[{Key=Name,Value=puppet-demo}]"',
  path    => ['/usr/local/bin', '/usr/bin', '/bin'],
  unless  => '/usr/local/bin/aws ec2 describe-instances --filters Name=tag:Name,Values=puppet-demo --region us-east-1 | grep "InstanceId"',
  logoutput => true,
}

###############################################

6. Apply the Manifest

sudo /opt/puppetlabs/bin/puppet apply /root/launch_ec2.pp


=================================================================

unless ensures the instance is not launched again if it already exists.
using only Puppet and AWS CLI
Ensure subnet-id and security-group-id belong to the same VPC.
Replace:
	ami-0c2b8ca1dad447f8a with a valid Amazon Linux 2 AMI in your region.
	mykey1 with your actual Key Pair name.