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Installing Dokku as your own PaaS part 1

September 10, 2014

On the previous article we've been discussed about
how to create Vanity name server using digital ocean

Now, we move on to the next step.

Dokku is a mini-Heroku powered by Docker written in less than 100 lines of Bash. Once it's set up on a host, you can push Heroku-compatible applications to it via Git. They'll build using Heroku buildpacks and then run in isolated containers. The end result is your own, single-host version of Heroku.

Dokku is under 100 lines because it's built out of several components that do most of the heavy lifting: Docker, Buildstep, and gitreceive.

Docker is a container runtime for Linux. This is a high-level container primitive that gives you a similar technology to what powers Heroku Dynos. It provides the heart of Dokku.
Buildstep uses Heroku's open source buildpacks and is responsible for building the base images that applications are built on. You can think of it as producing the "stack" for Dokku, to borrow a concept from Heroku.
Gitreceive is a project that provides you with a git user that you can push repositories to. It also triggers a script to handle that push. This provides the push mechanism that you might be familiar with from Heroku.

Installing Dokku as your own PaaS

after you have create a vanity nameserver you can install dokku on your server

based on dokku documentation you can bootstraping dokku stable version with command wget -qO- https://raw.github.com/progrium/dokku/v0.2.3/bootstrap.sh | sudo DOKKU_TAG=v0.2.3 bash

Update buildstep
- git clone https://github.com/progrium/buildstep.git
- cd buildstep
- git pull origin master
- nano stack/packages.txt
- add:
  - libmcrypt4
  - libreadline5
- sudo make build
install postgresql plugin

cd /var/lib/dokku/plugins
git clone https://github.com/Kloadut/dokku-pg-plugin postgresql
dokku plugins-install

Update docker.conf

cd ~/
sudo wget -O /etc/init/docker.conf https://raw.github.com/dotcloud/docker/master/contrib/init/upstart/docker.conf
sudo service docker restart

Add your local ssh_key to your dokku server

cat ~/.ssh/id_rsa.pub | ssh root@your_dokku_server_domain.com "sudo sshcommand acl-add dokku ssh_key_name"

push your first project

add dokku remote git remote add remote_name dokku@your_dokku_server_domain.com:app_name
git push remote_name master

create database for your app

ssh dokku@your_dokku_server_domain.com postgresql:create app_name #from your local

link database for your app

ssh root@your_dokku_server_domain.com dokku postgresql:link app_name database_name

run migration

dokku run app_name rake db:migrate

now try to visit “app_name.your_dokku_server_domain.com”, you should see your app there

install dokku-custom-domain plugin

git clone https://github.com/neam/dokku-custom-domains.git /var/lib/dokku/plugins/custom-domains
dokku plugins-install

add your custom domain

dokku domains:set app_name domain1.com www.domain1.com domain2.com (Server side)
ssh dokku@your_dokku_server_domain.com domains:set app_name domain1.com www.domain1.com domain2.com (Client side)

Credits To : Muhammad Bayu

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