ANSIBLE

Introduction

@xeviknal

AGENDA

• What's that?
• Inventory
• Playbook
  • Task / Handlers / Vars
  • Role
• Galaxy
• Installing a balancer
• Installing a mysql
• Documentation
• Q&A

What the f**ck is Ansible?

Ansible is an open-source automation engine that

1. automates cloud provisioning,
2. configuration management, and
3. application deployment.

# ALL VIA SSH

# Let's use it

ansible-playbook -i frontends webserver.yml

# Let's use it

ansible-playbook -i frontends webserver.yml

Inventory

L'inventari és el lloc on defineixen els servidors al qual l'ansible pot operar.

ARCHITECTURE

/inventory/stratya/production

• Hosts (3e3c0dc)
• Groups
  • Hosts
  • Groups
• Variables (d16a6e5)
  • Host variables
  • Group variables
  • Split in files (a07fa61)

/inventory/stratya/production

• Hosts (3e3c0dc)
• Groups
  • Hosts
  • Groups

ansible all -m ping
ansible all -a /bin/date
ansible all -m file -a 'path=hello.txt state=touch'
ansible all -m file -a 'path=hello.txt state=absent'
moar: http://docs.ansible.com/ansible/intro_adhoc.html

/inventory/stratya/production

• Variables (d16a6e5)
  • Host variables
  • Group variables

/inventory/stratya/production

• Variables
  • Split in files (a07fa61)

Playbook

Playbook es un conjunt de plays

Instal·lació d'un Frontal

│

Un play es un conjunt de tasks

Instal·lació d'un nginx

│

Una task crida mòduls

Afegir un nou site

frontal.yml

(23f3b99)

• YAML (Yet Another Markup Language)
• hosts
• become
• vars
• tasks
• handlers

ROLE

FOR BEST PRACTICES' SAKE

frontal.yml

(207783f)

• vars
• handlers
• tasks
• templates

AM I THE FIRST GUY

INSTALLING NGINX

VIA ANSIBLE?

open source, xoxo

ANSIBLE GALAXY

https://galaxy.ansible.com

MOVE ON: BALANCER

• install a role
• tune a role

INSTALLING THE ROLE

(1493cc0)

https://galaxy.ansible.com
ansible-galaxy install geerlingguy.haproxy -p roles
ansible-galaxy install -r requirements.yml -p roles

TUNING THE ROLE

(4940e6b)

• adding the frontals to balancing
• adding stats

HAProxy Module

(fef499d)

MOVE ON: DATABASE

• install a role
• tune a role

INSTALLING THE ROLE

(51115d9)

https://galaxy.ansible.com
ansible-galaxy install geerlingguy.mysql -p roles
ansible-galaxy install -r requirements.yml -p roles

TUNING THE ROLE

ansible database modules

Documentation