General programming

Useful ansible roles

What: Using Ansible to setup a development system with Couchdb and Docker
Why: Having a phoenix like dev setup
How: Using Ansible and some simple roles to provision the system

Requirements

You need a system, where Ansible is installed on. In case you don’t have it at hand, you can use the following Vagrantfile to set it up:

Vagrant.configure("2") do |config|
  config.vm.box = "debian/jessie64"
  config.vm.synced_folder ".", "/vagrant", type: "virtualbox"

  config.vm.provision "shell", inline: <<-SHELL
    echo "deb http://ppa.launchpad.net/ansible/ansible/ubuntu trusty main" >> /etc/apt/sources.list
    sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 93C4A3FD7BB9C367
    sudo apt-get update
    sudo apt-get install -y ansible
  SHELL
end

Preparing the playbook

Lets set up a simple playbook. Because something is installed, become is needed to install as root. Create a file called playbook.yml with the following content (there are more roles in the repository, but these should be enough for the beginning):

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- name: playbook
  hosts: all
  become: true
  
  roles:
    - install-dockerce
    - install-docker-py
    - install-couch
    - install-java8
    - install-maven
    - install-vim

The roles

Clone the following git repository and change to the directory usefulansibleroles. Copy the roles-folder next to your playbook file.

Note: The install-couch role will install couchdb via docker (see https://hub.docker.com/r/klaemo/couchdb/) in version 2.0. Docker will be setup to restart couchdb at every boot.

Run playbook

Run the playbook. You can use a hosts file at /etc/ansible/hosts or run it locally:

ansible-playbook -i "localhost," -c local playbook.yml

Test

Connect to the provisioned machine. The following commands should give you correct results:

java -version

mvn -version

vim

sudo docker run hello-world

curl http://localhost:5984