Intro to Vagrant, Ansible and Docker

1. Vagrant + Ansible + Docker
building portable infrastructure
Vijay Selvaraj <vijay.selvaraj@gmail.com>

2. Avoid the ‘but it works on my computer’ problem
Why be married to a PaaS provider?

3. Build virtual environments with a configuration file
Isolate dependencies and their configuration
Disposable
Consistent workflows
Develop and test infrastructure management scripts

4. sample vagrant file

5. Simple configuration management solution for
complex polyglot systems
Ansible is push-based vs pull-based (ex. Puppet)
On-demand task execution
No client required on the node
Rollback bad configurations

6. sample playbook

7. Portable across all machines
Lightweight footprint and minimal overhead
Reduces risk of application dependencies

8. sample dockerfile

9. putting it all together …

10. Vagrant is responsible for starting up and
running an Ansible playbook
The Ansible playbook starts a docker container
Application code runs within the Docker
container

11. https://github.com/vselvarajijay/vagrant-ansible-docker-django
code: