A complete copy of the file system structure and data of the virtual machine.
Can be defined as code using tools such as Packer and Vagrant.
Example of a Packer template that creates Amazon Machine Image (AMI):
{
"builders": [{
"ami_name": "packer-example-",
"instance_type": "t2.micro",
"region": "us-east-2",
"type": "amazon-ebs",
"source_ami": "ami-0fb653ca2d3203ac1",
"ssh_username": "ubuntu"
}],
"provisioners": [{
"type": "shell",
"inline": [
"sudo apt-get update",
"sudo apt-get install -y php apache2",
"sudo git clone https://github.com/brikis98/php-app.git /var/www/html/app"
],
"environment_vars": [
"DEBIAN_FRONTEND=noninteractive"
],
"pause_before": "60s"
}]
}