Getting started with Ansible

Ansible Demo

Installing Ansible on CentOS 7 Machine 1 (Eg IP: 192.168.56.101)

yum install -y ansible

Creating inventory file

$ mv /etc/ansible/hosts /etc/ansible/hosts.orig

$ vi /etc/ansible/hosts 

[web]

192.168.56.102 ansible_ssh_pass=<Password> ansible_ssh_user=<UserName>

Save this file with "!wq" command.

Creating Playbook file 

$vi SamplePlaybook.yml

---

- hosts: web

  tasks:

   - name: install apache

     yum: name=httpd state=latest

   - name: copy my indexfile

     template: src=/root/index.html dest=/var/www/index.html

     notify:

      - restart apache

   - name: ensure apache is running

     service: name=httpd state=started enabled=yes

  handlers:

  - name: restart apache

    service: name=httpd state=restarted

Save this file with "!wq" command.

Now execute this file using ansible playbook command:

$ ansible-playbook SamplePlaybook.yml

Output

----------------------------------------------------------------------------------

PLAY [web] *********************************************************************

TASK [setup] *******************************************************************

ok: [192.168.56.102]

TASK [install apache] **********************************************************

ok: [192.168.56.102]

TASK [copy my indexfile] *******************************************************

changed: [192.168.56.102]

TASK [ensure apache is running] ************************************************

changed: [192.168.56.102]

RUNNING HANDLER [restart apache] ***********************************************

changed: [192.168.56.102]

PLAY RECAP *********************************************************************

192.168.56.102             : ok=5    changed=3    unreachable=0    failed=0