DevOps Classroom Series – 17/Jun/2021

Activities Post Cookbook Development

• Chef Workflow for deploying application in various environments

• Lets bootstrap 3 ubuntu 18 nodes

  • node 1:
    • Env: QA
    • both apache and mysql on same server
    • roles: web server and db server
  • node 2:
    • Env: Prod
    • role: web server
    • apache server
  • node 3:
    • Env: Prod
    • role: db server
    • db server (mysql)

• For node 1 run_list => lampserver[‘apache’] + lampserver[‘mysql’]

• For node 2 run_list => lampserver[‘apache’]

• For node 3 run_list => lampserver[‘mysql’]

• Adding individual recipes to run_list might be an error prone area

• We might need to have different convergence times

  • 60 minutes for test (QA) environments
  • Every day at 1:00 AM for pre-prod environments.
  • Manual for production environments

• Ensuring restrictions on which versions of the cookbook can be applied to a node.

• Next Concepts

  • Roles
  • Environments
  • Attribute precedence.