Ansible - Helloworld.md

Ansible is used for deployment automation/provisioning, configuration management and documentation.

Resources

• http://docs.ansible.com/ansible/intro_getting_started.html
• https://serversforhackers.com/an-ansible-tutorial
• https://www.linode.com/docs/applications/ansible/getting-started-with-ansible
• http://atpras.blogspot.ca/2014/02/ansible-hello-world.html’
• https://sysadmincasts.com/episodes/43-19-minutes-with-ansible-part-1-4

Create a target vagrant ubuntu machine for this exercise

vagrant init aspyatkin/ubuntu-16.04-server-amd64; vagrant up --provider virtualbox

Install Python on the Master Machine and on the Slave machine

(If apt-get-repository command not found)

sudo apt-get install software-properties-common python-software-properties

sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python2.7

python --version

Installing Ansible

sudo apt-get install software-properties-common
sudo apt-add-repository ppa:ansible/ansible
sudo apt-get update
sudo apt-get install ansible

Ensure you have your SSH Public Key set on the target server

http://sshkeychain.sourceforge.net/mirrors/SSH-with-Keys-HOWTO/SSH-with-Keys-HOWTO-4.html

“When speaking with remote machines, Ansible by default assumes you are using SSH keys. SSH keys are encouraged but password authentication can also be used where needed by supplying the option --ask-pass. If using sudo features and when sudo requires a password, also supply --ask-become-pass (previously --ask-sudo-pass which has been deprecated).”

Edit your hosts file and add the target machine

sudo pico /etc/ansible/hosts

[ubuntu1]
127.0.0.1 ansible_port=2222 ansible_user=vagrant

Run a simple ansible command against the target machine

The command for ansible is of the following format:

ansible server_or_group -m module_name -a arguments

ansible ubuntu1 -m ping

Create a hello world playbook

hello.yml

---
- name: Hello World
  hosts: ubuntu1
  user: vagrant
  sudo: yes

  tasks:
    - name: Hello World
        shell: date >> now.txt

Run the playbook

ansible-playbook hello.yml

Ansible will create a now.txt file in the home directory of the target machine: /home/vagrant. It will output the date each time the playbook is run.