Ansible is a simple IT automation engine that automates cloud provisioning, configuration management, application deployment, intra-service orchestration, and many other IT needs.
Ansible works by connecting to your nodes and pushing out small programs, called "Ansible modules" to them. These programs are written to be resource models of the desired state of the system. Ansible then executes these modules (over SSH by default), and removes them when finished.
TL;DR
Ansible has the option to import multiple playbooks into a single one using the method: import_playbook:
/playbooks/main.yml
---
- name: Playbook_1
import_playbook: 00-playbook-1.yml
- name: Playbook_2
import_playbook: 01-playbook-2.yml
When you execute ansible-playbook playbooks/main.yml Ansible will execute first the Playbook1, and then Playbook 2.
We're going through an example to see it in action
The first playbook executes a ping into your servers:
/playbooks/00-ping.yml
---
- hosts: all
tasks:
- name: Ping All Servers
action: ping
- debug: msg="Success"
The second playbook upgrades all your yum packages:
/playbooks/01-upgrade.yml
---
- hosts: all
tasks:
- name: upgrade all packages
become: yes
yum:
name: '*'
state: latest
The third playbook download a node binary distribution:
/playbooks/02-download-node.yml
---
- hosts: all
tasks:
- name: Download node binary distro
shell: curl sL https://rpm.nodesource.com/setup_12.x | sudo bash -
The fourth playbook install node:
/playbooks/03-install-node.yml
---
- hosts: all
tasks:
- name: Install Node
become: yes
yum:
name: nodejs
state: present
The fifth playbook copy your app into the remote servers:
/playbooks/04-provisioning.yml
---
- hosts: all
tasks:
- name: Copy app files
copy:
src: ~/documents/my-app-folder/
dest: /home/ec2-user/my-app
force: no
- debug: msg="Success"
And finally you need to install dependencies based on your package-json:
/playbooks/05-install-dependencies.yml
---
- hosts: all
tasks:
- name: Install packages based on package.json.
npm:
path: /home/ec2-user/my-app
Once you have all your playbooks ready, if you want to execute all of them in the desired order you need to create a main playbook, and import all of them as follow:
/playbooks/main.yml
---
- name: Ping
import_playbook: 00-ping.yml
- name: Update
import_playbook: 01-update.yml
- name: Download Node
import_playbook: 02-download-node.yml
- name: Install Node
import_playbook: 03-install-node.yml
- name: Provisioning
import_playbook: 04-provisioning.yml
- name: Install Dependencies
import_playbook: 05-install-dependencies.yml
That's it. You are ready to execute ansible-playbook playbooks/main.yml and you'll upgrade all your packages, download and install node, provision all your selected servers, and install your dependencies.
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