firecrackerode

Node.js client for Amazon's Firecracker MicroVM platform.

Installation

npm install firecrackerode

Usage

• Check Fireracker API documentation for more details.

Getting started

To use firecrackerode first you need to instantiate it:

var Firecracker = require('firecrackerode');
var firecracker = new Firecracker({socketPath: '/tmp/firecracker.socket'});

Creating a MicroVM

//https://s3.amazonaws.com/spec.ccfc.min/img/hello/kernel/hello-vmlinux.bin
firecracker.bootSource({
  'kernel_image_path': process.cwd() + '/images/hello-vmlinux.bin',
  'boot_args': 'console=ttyS0 reboot=k panic=1 pci=off'
}).then(function(data) {
  //https://s3.amazonaws.com/spec.ccfc.min/img/hello/fsfiles/hello-rootfs.ext4
  var drive = firecracker.drive('rootfs');
  return drive.updatePreboot({
    'path_on_host': process.cwd() + '/images/hello-rootfs.ext4',
    'is_root_device': true,
    'is_read_only': false
  });
}).then(function(data) {
  return firecracker.action('InstanceStart');
}).then(function(data){
  console.log('MicroVM booted!');
}).catch(function(err) {
  console.log(err);
});

Helper functions

//Downloading an image
firecracker.downloadImage('https://s3.amazonaws.com/spec.ccfc.min/img/hello/kernel/hello-vmlinux.bin', os.tmpdir() + '/hello-vmlinux.bin').then(function () {
  console.log('Kernel image downloaded!');
}).catch(function(err) {
  console.log(err);
});

//Spawn Firecracker process
firecracker.spawn().then(function () {
  console.log('Firecracker spawned!');
}).catch(function(err) {
  console.log(err);
});

//Kill Firecracker process
firecracker.kill()

Tests

• You need a KVM host.
• Tests are implemented using mocha and chai. Run them with npm test.

Examples

Check the examples folder for more specific use cases examples.

License

Pedro Dias - @pedromdias

Licensed under the Apache license, version 2.0 (the "license"); You may not use this file except in compliance with the license. You may obtain a copy of the license at:

http://www.apache.org/licenses/LICENSE-2.0.html

Unless required by applicable law or agreed to in writing, software distributed under the license is distributed on an "as is" basis, without warranties or conditions of any kind, either express or implied. See the license for the specific language governing permissions and limitations under the license.