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Packer

Packer is a tool for building identical machine images for multiple platformsfrom a single source configuration.

Packer is lightweight, runs on every major operating system, and is highlyperformant, creating machine images for multiple platforms in parallel. Packercomes out of the box with support for many platforms, the full list of which canbe found at https://www.packer.io/docs/builders.

Support for other platforms can be added via plugins.

The images that Packer creates can easily be turned intoVagrant boxes.

Quick Start

Note: There is a greatintroduction and getting started guidefor those with a bit more patience. Otherwise, the quick start belowwill get you up and running quickly, at the sacrifice of not explaining somekey points.

First, download a pre-built Packerbinary for your operating system orcompile Packeryourself.

After Packer is installed, create your first template, which tells Packerwhat platforms to build images for and how you want to build them. In ourcase, we'll create a simple AMI that has Redis pre-installed.

Save this file as quick-start.pkr.hcl. Export your AWS credentials as theAWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables.

variable "access_key" {  type    = string  default = "${env("AWS_ACCESS_KEY_ID")}"}variable "secret_key" {  type      = string  default   = "${env("AWS_SECRET_ACCESS_KEY")}"  sensitive = true}locals { timestamp = regex_replace(timestamp(), "[- TZ:]", "") }source "amazon-ebs" "quick-start" {  access_key    = "${var.access_key}"  ami_name      = "packer-example ${local.timestamp}"  instance_type = "t2.micro"  region        = "us-east-1"  secret_key    = "${var.secret_key}"  source_ami    = "ami-af22d9b9"  ssh_username  = "ubuntu"}build {  sources = ["source.amazon-ebs.quick-start"]}

Next, tell Packer to build the image:

$ packer build quick-start.pkr.hcl...

Packer will build an AMI according to the "quick-start" template. The AMIwill be available in your AWS account. To delete the AMI, you must manuallydelete it using the AWS console. Packerbuilds your images, it does not manage their lifecycle. Where they go, howthey're run, etc., is up to you.

Documentation

Comprehensive documentation is viewable on the Packer website at https://www.packer.io/docs.

Contributing to Packer

SeeCONTRIBUTING.mdfor best practices and instructions on setting up your development environmentto work on Packer.

Unmaintained Plugins

As contributors' circumstances change, development on a community maintainedplugin can slow. When this happens, HashiCorp may use GitHub's option to archive theplugin’s repository, to clearly signal the plugin's status to users.

What does unmaintained mean?

1. The code repository and all commit history will still be available.
2. Documentation will remain on the Packer website.
3. Issues and pull requests are monitored as a best effort.
4. No active development will be performed by HashiCorp.

If you are interested in maintaining an unmaintained or archived plugin, please reach out to us at [email protected].