OpossumPetya / 3-CICD

CI/CD

Homework 1

#homework #cicd1

1. Create a dummy pileline:

• Open gitlab.
• Import course project into your personal gitlab space.
• Create a pipeline with 3 stages “build – test – deploy” with dummy echo scripts.

2. Send screenshot of the pipeline to the course chat with homework's hashtags.

Links 1

• Gitlab docs
• Registering Gitlab Runner
• Import project to Gitlab by URL

Additional information:

• Martin Fowler’s CI
• Martin Fowler’s CD
• CD SAFE

Homework 2-1

#homework #cicd2_1

1. Build applcaitions:

• Configure .gitlab-ci.yml to build applications in build stage without dockerization.
• Keep built .jar files as job artifacts with expiration in 1 hour.

2. Send screenshots of artifacts to the course chat with homework's hashtags.

Links 2-1

• .gitlab-ci.yml file
• Predefined variables
• Gitlab job artifacts

Homework 2-2

#homework #cicd2_2

1. Keep gradle cache for build jobs.
2. When added – send, with homework's hashtags, the lines from jobs logs that show cache is created and stored.

Links 2-2

• Gitlab caching

Homework 3-1

#homework #cicd3_1

1. Dockerize applications:

• Add new stage dockerization.
• Create jobs use dind service to package jar files from build stage and push images.
• Image tag names should start with dind- and end with short commit hash.

2. Addinitionally you need to add a docker config as Gitlab file variable DOCKER_CONFIG to push images in Gitlab registry. You will need predefined Gitlab variables for that.
3. Send screenshots of using dind in gitlab-ci.yml with homework's hashtags.

Links 3-1

• Use Docker-in-Docker
• Use Docker to build Docker images

Additional

• Docker breakout privilege escalation
• Understanding Docker container escapes

Homework 3-2

#homework #cicd3_2

1. Dockerize applications with Kaniko:

• Image tag names should start with kaniko- and end with short commit hash
• Compare the two approaches, which one is faster

1. Send screenshots with all dockerization jobs (dind and Kaniko) in gitlab-ci.yml with homework's hashtags.
2. Remove DIND dockerization and keep Kaniko as best practice.

Links 3-2

• Kaniko docs
• Using Kaniko to build Docker images

Homework 4-1

#homework #cicd4_1

1. Rewrite .gitlab-ci.yml to use include directive:

• Create new repo for CI yml files
• Move CI from course project repo into new CI repo
• Use include to inject CI from new project into course project

2. Screenshots with files of new CI and course project repositories should be sent to the course chat with homework's hashtags.

Links 4-1

• Gitlab anchors
• Gitlab extends
• Gitlab CI include
• Use extends and include together

Homework 4-2

#homework #cicd4_2

You will use this workpiece later in Kubernetes module

1. Add dummy deploy jobs for “dev” and “prod” environments:

• Add any URLs for both environments
• Add a condition for deploying the application to the production environment only from the master branch, using rules:
  • Add a variable with different values, depending on the environment for which a job is being started
  • Protect the variable for Production environment
  • Use echo to confirm the result

2. Screenshot with deployed environments (Deployments -> Environments) should be sent to the course chat with homework's hashtags.

Links 4-2

• Environments and deployments

Additional links

• API resources