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02_45-deploying-via-git.md

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Configuring CI/CD pipelines

Continuous Delivery

Deploy via Git

Add the following job to your .gitlab-ci.yml to add a manual "Play" button to deploy to production.

We're still dealing with "continuous delivery", not "continous deployment", so we'll only push changes to production after our (pretend) Change Control Board give us the thumbs up following successful testing in the Stage/UAT environment (see next slide):

deploy_to_prod:
  tags: 
    - shell
  stage: deploy
  environment: production
  when: manual
  script:
  - GIT_SSH_COMMAND="ssh -i ~gitlab-runner/.ssh/push_to_git" git push --force git@gitlab.example.com:root/www.git +HEAD:refs/heads/prod

Configuring CI/CD pipelines

Continuous Delivery

Deploy via Git

Explanation of the git command:

GIT_SSH_COMMAND="ssh -i ~gitlab-runner/.ssh/push_to_git" git push --force git@gitlab.example.com:root/www.git +HEAD:refs/heads/prod

  • GIT_SSH_COMMAND to specify SSH command line options (such as -i to specify identity file)
  • --force override built-in safeguards (see git-push man page if you want details)
  • + tells git to create the target branch if it doesn't exist
  • HEAD:ref/heads/prod means the HEAD (tip) of the prod branch