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Ansible 2 done right!

Local Setup

This course is based on Docker and Docker compose. As long as you have Docker
you can run it on:

  • linux
  • mac
  • windows

Docker should be exposed via TCP on 172.17.0.1:2375

On Linux, set

# vim /etc/systemd/system/multi-user.target.wants/docker.service
[Service]
...
ExecStart=/usr/bin/dockerd -H fd:// -H tcp://172.17.0.1:2375
...

On Mac, check the FAQ and this issue

Consider having enough bandwidth for the first run to download the images.

Run the environemnt with:

# make course

or

# docker-compose scale course=1 bastion=1 web=3
# firefox http://localhost:8888

Playing the course on DigitalOcean

DigitalOcean is a great and cheap cloud-provider

  • create an Ubuntu 16.04 docker droplet from the menu and ssh into your host
  • expose docker on local http port
# vim /etc/systemd/system/multi-user.target.wants/docker.service
[Service]
...
ExecStart=/usr/bin/dockerd -H fd:// -H tcp://172.17.0.1:2375
...
  • clone and run the project
 # git clone https://github.com/ioggstream/python-course.git
 # cd python-course/ansible-101
 # make course


  • point to the reference url

See asciicast here

Outline

  • Ansible architecture
  • Describe delivery layout in ansible.cfg
  • Host and Group variables, Filters
  • Static and dynamic inventories (docker)
  • Vaults and Secrets
  • Use bastions and other ssh_opts
  • writing basic playbooks, test driven deployment
  • Yaml pitfalls
  • Inclusion and Roles
  • Ansible galaxy as a role repository (bonus track)
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ioggstream
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