RichardSlater/zero-downtime-ansible

Zero Downtime Deployment with Ansible - learn how to provision Linux servers with a web-proxy, a database and automate zero downtime deployment of a Java application to a load balanced environment.

Intro

This is the starting point for a tutorial which will be held at the Velocity Conference in Barcelona November 19th.

• Abstract
• Tutorial slides

Install Ansible

Mac:

Install Python setuptools: https://pypi.python.org/pypi/setuptools#installation-instructions

If you prefer not to install packages to your global site-packages you can install and use virtualenv: http://virtualenv.readthedocs.org/en/latest/

sudo easy_install pip

sudo pip install paramiko PyYAML jinja2 passlib

sudo pip install ansible

Then, if you're going to update ansible later, just do:

sudo pip install ansible --upgrade

Other:

http://www.ansibleworks.com/docs/intro_installation.html

Install VirtualBox and Extension Pack

https://www.virtualbox.org/wiki/Downloads

Install Vagrant

http://docs.vagrantup.com/v2/installation/

Install vagrant-cachier to speed up apt with a shared cache between boxes:

vagrant plugin install vagrant-cachier

Clone this repo, and start the virtual machines:

git clone https://github.com/steinim/zero-downtime-ansible.git
cd zero-downtime-ansible
vagrant up

Map the ip addresses of the VMs in your /etc/hosts

ansible-playbook -i localhost --ask-sudo-pass localhost.yml

Provision with Ansible

ansible-playbook site.yml

Install Java and Maven (Optional)

http://www.oracle.com/technetwork/articles/javase/index-jsp-138363.html

http://maven.apache.org/download.cgi

Build the Java app

cd helloworld-java-app

mvn clean install

Getting started

http://www.ansibleworks.com/docs/intro_getting_started.html

Ansible Modules

http://www.ansibleworks.com/docs/modules.html