How to use Jinja2 Template in Ansible Playbook

 

• jinja2 is python based templating language.
• we use it mostly when we want to keep some configuration files or any file dynamic.
• When configuration changes are mostly dynamic you don't know the value before running the playbook then we use this template.
• We just keep the variable of Ansible-playbook in this jinja template which can get replaced while running the playbook.
• We can use loops and conditional statement to transform the data according to our requirement..
• It comes with .j2 extension.
• It is very easy to use.

Tags:

{#  #}  When you want to comment something to describe the tasks.

{%  %}  In control statement such as if-else, for loops we use this Tag.

{{  }}  This tag will replace the variable name with the actual value.

[pankaj@host]$ ansible-playbook ansible-playbook-example.yaml

References:

https://ansible-tips-and-tricks.readthedocs.io/en/latest/ansible/commands/