Flynn. No future work is planned on this as the artchitecture is fundamentally flawed. We suggest you rather check out Flynn instead.Note that this project is discontinued in favour of us joining efforts with
Hello, welcome to Dawn, a PaaS that leverages Ruby on Rails and Docker. It implements a Heroku-like interface, with an API-first approach. Initial development started in October 2013 intending to be launched as a commercial service eventually, however due to the increasing competition in the PaaS market, and the lack of time, we've released it as open-source. Enjoy!
Our current development stack is ubuntu 14.04, running docker, ruby 2.1.2 (rails 4.1.1), postgresql, redis, logplex and hipache.
- Releasing apps onto the platform via git
- Building app containers via Buildstep
- Importing ENV variables into the app space
- Retrieving app logs, and setting up drain urls, to which logs can be submitted via HTTP POST
- Scaling per-proctype
- A system capable of running amd64 VMs (for our development box)
- Vagrant >= 1.6.2
- Patience (if you have a bad network connection and/or not so fancy computer)
The box IP needs to resolve to dawn.dev and dawnapp.dev (configurable in config/application.yml). You can add an alias to /etc/resolv.conf, or use your own method of doing so. We suggest using dnsmasq, with the following line in it's configuration:
# /etc/dnsmasq.conf ... address=/dev/192.168.33.10
Setting up a development environment is pretty easy. All it takes to get the box up and running is:
$ vagrant up
The initial provisioning run might take a while, because we pull and build several dependencies.
All set! Your box is now ready to use.
In order to provision a custom server, you can use the included script,
script/provision. Another option is to copy Dawn onto the server, and run the
script/setup && script/build && script/bootstrap (in fact,
script/provision is a wrapper
that does exactly that).
Using the CLI utility
The client can be easily installed via Rubygems.
$ gem install dawn-cli
A list of all available commands along with descriptions is available under
Workflow usually looks like this: First we log into our Dawn account.
$ dawn login Username: Speed Password: test1234
The utility then stores the API token under
~/.netrc for further use.
Next up, we need to add our ssh key, in order to be authorized to push to the platform. This will automatically take your
dawn key add
Then, we initialize our project on the Dawn platform.
$ cd awesome-app $ dawn create
And we're done! To build our app, simply push to the
$ git push dawn master Counting objects: 148, done. Delta compression using up to 8 threads. Compressing objects: 100% (107/107), done. Writing objects: 100% (148/148), 11.90 KiB | 0 bytes/s, done. Total 148 (delta 46), reused 0 (delta 0) Ruby app detected -----> Compiling Ruby/Rack -----> Using Ruby version: ruby-2.1.0 -----> Installing dependencies using 1.5.2 Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment Fetching gem metadata from https://rubygems.org/.......... Fetching additional metadata from https://rubygems.org/.. Installing daemons (1.1.9) Using bundler (1.5.2) Installing tilt (1.4.1) Installing rack (1.5.2) Installing rack-protection (1.5.2) Installing sinatra (1.4.4) Installing eventmachine (1.0.3) Installing thin (1.6.1) Your bundle is complete! Gems in the groups development and test were not installed. It was installed into ./vendor/bundle Bundle completed (20.25s) Cleaning up the bundler cache. -----> Discovering process types Procfile declares types -> web Default process types for Ruby -> rake, console, web -----> Launching... done, v1 http://awesome-app.dawnapp.dev deployed to Dawn To firstname.lastname@example.org:ruby-sample.git * [new branch] master -> master
dawn run: one-off containers running a single command then getting destroyed
Adding custom domains
Services: db, queues, caches, mail servers, file storage
Rollback to a specific release
Inject the ENV config into the releases
Resource limiting: constraints on CPU, memory, bandwidth, disk space...
Per app metrics
Global server metrics, so we can monitor the entire server
Monitoring: restart any crashed gear
Manage different release environments
Use a grsecurity patched kernel (or coreOS)
Use OAuth2 to make a provider for token generation, authentication and authorization
Logging: allow us to specify drains (uses logplex drains to post logs to a drain)
vagrant provision stalls at dawn/buildstep
Buildstep takes quite a bit to build, in the case that it shows no sign of movement, you can also try to build it manually:
dawn$ vagrant ssh vagrant@ubuntu-14:~$ cd /app vagrant@ubuntu-14:/app$ docker build -t dawn/buildstep .
bundle install fails in a SSL error
Try running the provisioning again, it's probably a network error.
API is not working after a VM reboot
This is because we're still using the foreman generated upstart files, that don't watch for vagrant-mounted event. This will be resolved in the near future, but for now, ssh into the box and restart the service. It should take about 30-60 seconds to restart.
vagrant ssh vagrant@ubuntu-14:~$ sudo restart dawn
API is not working after a system sleep/hybernation
Vagrant sometimes seems to unmount the shared folder
/app on such occasions. Run
API documentation is available. We're in the process of providing online CLI documentation and guides as well.
- dashboard.dawn.dev doesn't work