Ash Berlin
242ed49ecb
The previous version used fmt.Fscanln which sounds like it should scan for a whole line, but it actually errors if there is more than a single word/token given. You can see this here https://play.golang.org/p/1RYXdtPSbk And looking at the only usage of this function in core it won't break anything to change it to actually return whole lines instead. line, err := ui.Ask("[c] Clean up and exit, [a] abort without cleanup, or [r] retry step (build may fail even if retry succeeds)?") Closes #4474
Packer
- Website: http://www.packer.io
- IRC:
#packer-toolon Freenode - Mailing list: Google Groups
Packer is a tool for building identical machine images for multiple platforms from a single source configuration.
Packer is lightweight, runs on every major operating system, and is highly performant, creating machine images for multiple platforms in parallel. Packer comes out of the box with support for the following platforms:
- Amazon EC2 (AMI). Both EBS-backed and instance-store AMIs
- Azure
- DigitalOcean
- Docker
- Google Compute Engine
- OpenStack
- Parallels
- QEMU. Both KVM and Xen images.
- VirtualBox
- VMware
Support for other platforms can be added via plugins.
The images that Packer creates can easily be turned into Vagrant boxes.
Quick Start
Download and install packages and dependencies
go get github.com/mitchellh/packer
Note: There is a great introduction and getting started guide for those with a bit more patience. Otherwise, the quick start below will get you up and running quickly, at the sacrifice of not explaining some key points.
First, download a pre-built Packer binary for your operating system or compile Packer yourself.
After Packer is installed, create your first template, which tells Packer
what platforms to build images for and how you want to build them. In our
case, we'll create a simple AMI that has Redis pre-installed. Save this
file as quick-start.json. Export your AWS credentials as the
AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables.
{
"variables": {
"access_key": "{{env `AWS_ACCESS_KEY_ID`}}",
"secret_key": "{{env `AWS_SECRET_ACCESS_KEY`}}"
},
"builders": [{
"type": "amazon-ebs",
"access_key": "{{user `access_key`}}",
"secret_key": "{{user `secret_key`}}",
"region": "us-east-1",
"source_ami": "ami-de0d9eb7",
"instance_type": "t1.micro",
"ssh_username": "ubuntu",
"ami_name": "packer-example {{timestamp}}"
}]
}
Next, tell Packer to build the image:
$ packer build quick-start.json
...
Packer will build an AMI according to the "quick-start" template. The AMI will be available in your AWS account. To delete the AMI, you must manually delete it using the AWS console. Packer builds your images, it does not manage their lifecycle. Where they go, how they're run, etc. is up to you.
Documentation
Comprehensive documentation is viewable on the Packer website:
Developing Packer
See CONTRIBUTING.md for best practices and instructions on setting up your development environment to work on Packer.