Ansible:12

DevOps Classroom Series – 31/Dec/2020

Ansible jinja templates

• Exercise: Now try Writing an ansible playbook for install tomcat8 on ubuntu and centos
  • ubuntu Refer Here
  • centos Refer Here
• As the part of above exercise we have written a playbook with inventory Refer Here
• tomcat.service file is hard coded. In reality we would like to have configuration file configurable dynamically, So lets create a template Refer Here
• Now lets identify the dynamic fields in this file and add jinja filters and use the template module Refer Here to copy the file
• Refer Here for the changeset and also Refer Here

Lets look at jinja2 filters

• Refer Here for jinja2 filter in ansible
• using lower filter for changeset Refer Here 
• Refer Here for all the built in filters
• Refer Here for the changeset and also refer its parent commits
• Ansible specific custom filters
• Executing current job when the result of other job is success or changed 
• Refer Here for the changeset

Problems to be resolved

• As of now in the playbook tomcat_ubuntu we are including a variable file, now if we want to run this playbook for multiple environments like
  • Dev
  • QA
  • Prod
• We might have different variables values, so how to effectively use the variable files
• How to use the playbooks written by community?
• How can make my playbook reusable?
• Ansible Tower