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Part VI: CI/CD

Objectives

By the end of this module, the SRE will:

  • Explain Continuous Integration and Continuous Deployment
  • Setup a CI/CD pipeline

Deliverables

Complete the project described below. Answer the questions, then schedule a time to meet with your mentor and discuss the what you've built.

Exercise

As you complete the project below, consider these questions:

  • What is Continuous Integration
    • Integration of what?
  • What is the D in CD?
  • What are the benefits and risks of CI/CD over traditional, manual software deployment?
  • Create a new VM in AWS in a public subnet with an attached ElasticIP (see Cloud Computing)
  • Create a local git repository
  • Create a simple webservice and deploy it to the VM.
    • What did you choose to deploy?
    • Consider how you might deploy a service with/without Docker
    • How does Docker change the deployment and development?
    • How would you ensure the service continues to run/restart when it fails?
  • Update webservice and deploy a new version
    • What are the key steps involved in deploying the new version to your VM?
    • What logins and secrets are required by the VM to access code/artifacts/containers?
    • If you had a data service, what other considerations might there be?
    • How will you confirm that the new version is indeed running?
  • With the commands you used to deploy the second version of the service, create a script.
  • Use the script to deploy the service again.
    • Excercise this process a few times manually
    • Consider what it might involve to trigger the deploy script automatically after a code commit
  • CircleCI setup: