First Playbook:
---
- name: Playbook
hosts: webservers
become: yes
become_user: root
tasks:
- name: ensure apache is at the latest version
yum:
name: httpd
state: latest
- name: ensure apache is running
service:
name: httpd
state: started
name Name of the playbook
hosts A set of hosts usually grouped together as a host group and defined in inventory file
become To tell ansible this play has to be executed with elevated privileges
become_user the user name that we want to switch to like compare it with sudo su - user
tasks set of tasks to execute, All tasks would be defined below this
and then we have two tasks with two modules, the first module is yum and the second module is service
become_user is something similar to su , and become means something like sudo su or "perform all commands as a sudo user".
Ansible Playbook examples
- Write a Ansible Playbook to create a group called “deploy”
- name: Create a group
hosts: group
tasks:
- name: Add group "deploy"
group:
name: deploy
state: present2.Write a Ansible Playbook to create a user called “deploy-user” which is part of group called “deploy” and with /bin/bash shell.
- name: Create a user
hosts: user
tasks:
- name: Add user "deploy-user"
user:
name=deploy-user groups=deploy password="" shell=/bin/bash
append=yes
state=present3. Write a Ansible Playbook to install package named “httpd” in RHEL/centos.
- name: To install an httpd webserver
hosts: web
tasks:
- name: Install httpd packages
yum:
name: httpd
state: present4. Write a Ansible Playbook to start and enable the service named “httpd”
- name: To start and enable an httpd webserver
hosts: web
tasks
- name: start httpd
service:
name: httpd
state: started
- name: enable httpd
service:
name: httpd
enabled: yes5. Write a Ansible Playbook to create a file called “index.html” in /var/www/html with some dummy html contents.
- name: creating a file
hosts: all
tasks:
- name: create a file index.html
file:
path: "/var/www/htmlindex.html"
state: touch
- name: adding contents to indexfile
blockinfile:
dest: /var/www/html/index.html
block: |
<html>
<h1> Welcome to HP Ansible class </h1>
</html>6. Write a Ansible Playbook to reboot a self machine.
- name: rebooting self machine
hosts: web
task:
- name: Reboot a Linux machine
reboot:
reboot_timeout: 18007. Write a Ansible Playbook to install a package called “git”, “wget”.
- name: To install a package "git" and "wget"
hosts: web
tasks:
- name: Install git packages
yum:
name: git
state: present
- name: Install wget packages
yum:
name: wget
state: present8. Write a Ansible Playbook to clone git repo. thttps://github.com/scmgalaxy/ansible-role-template
- name: Cloning git repo
hosts: web
environment:
http_proxy: 'http://web-proxy:8080'
https_proxy: 'http://web-proxy:8080'
tasks:
- name: cloning....
git:
repo=https://github.com/scmgalaxy/ansible-role-template
clone=yes
dest=./ansible-role-template
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