2-environments

2-environments

The purpose of this step is to set up development, non-production and production environments within the GCP organization.

Prerequisites

1. 0-bootstrap executed successfully.
2. 1-org executed successfully.
3. Cloud Identity / G Suite group for monitoring admins.
4. Membership in the monitoring admins group for user running terraform

Usage

Setup to run via Cloud Build

1. Clone repo gcloud source repos clone gcp-environments --project=YOUR_CLOUD_BUILD_PROJECT_ID
2. Change freshly cloned repo and change to non master branch git checkout -b plan
3. Copy contents of foundation to new repo cp -RT ../terraform-example-foundation/2-environments/ . (modify accordingly based on your current directory)
4. Copy cloud build configuration files for terraform cp ../terraform-example-foundation/build/cloudbuild-tf-* . (modify accordingly based on your current directory).
5. Copy terraform wrapper script cp ../terraform-example-foundation/build/tf-wrapper.sh . to the root of your new repository (modify accordingly based on your current directory).
6. Ensure wrapper script can be executed chmod 755 ./tf-wrapper.sh.
7. Rename terraform.example.tfvars to terraform.tfvars and update the file with values from your environment and bootstrap (you can re-run terraform output in the 0-bootstrap directory to find these values).
8. Commit changes with git add . and git commit -m 'Your message'
9. Push your plan branch to trigger a plan for all environments git push --set-upstream origin plan (the branch plan is not a special one. Any branch which name is different from development, non-production or production will trigger a terraform plan).
   1. Review the plan output in your cloud build project https://console.cloud.google.com/cloud-build/builds?project=YOUR_CLOUD_BUILD_PROJECT_ID
10. Merge changes to development with git checkout -b development and git push origin development
    1. Review the apply output in your cloud build project https://console.cloud.google.com/cloud-build/builds?project=YOUR_CLOUD_BUILD_PROJECT_ID
11. Merge changes to non-production with git checkout -b non-production and git push origin non-production
    1. Review the apply output in your cloud build project https://console.cloud.google.com/cloud-build/builds?project=YOUR_CLOUD_BUILD_PROJECT_ID
12. Merge changes to production branch with git checkout -b production and git push origin production
    1. Review the apply output in your cloud build project https://console.cloud.google.com/cloud-build/builds?project=YOUR_CLOUD_BUILD_PROJECT_ID

Setup to run via Jenkins

1. Clone the repo you created manually in bootstrap: git clone <YOUR_NEW_REPO-2-environments>

2. Navigate into the repo cd YOUR_NEW_REPO_CLONE-2-environments and change to a non production branch git checkout -b plan (the branch plan is not a special one. Any branch which name is different from development, non-production or production will trigger a terraform plan).

3. Copy contents of foundation to new repo cp -RT ../terraform-example-foundation/2-environments/ . (modify accordingly based on your current directory).

4. Copy the Jenkinsfile script cp ../terraform-example-foundation/build/Jenkinsfile . to the root of your new repository (modify accordingly based on your current directory).

5. Update the variables located in the environment {} section of the Jenkinsfile with values from your environment:

   _POLICY_REPO (optional)
   _TF_SA_EMAIL
   _STATE_BUCKET_NAME
   

6. Copy terraform wrapper script cp ../terraform-example-foundation/build/tf-wrapper.sh . to the root of your new repository (modify accordingly based on your current directory).

7. Ensure wrapper script can be executed chmod 755 ./tf-wrapper.sh.

8. Rename terraform.example.tfvars to terraform.tfvars and update the file with values from your environment and bootstrap (you can re-run terraform output in the 0-bootstrap directory to find these values).

9. Commit changes with git add . and git commit -m 'Your message'

10. Push your plan branch git push --set-upstream origin plan. The branch plan is not a special one. Any branch which name is different from development, non-production or production will trigger a terraform plan.

    • Assuming you configured an automatic trigger in your Jenkins Master (see Jenkins sub-module README), this will trigger a plan. You can also trigger a Jenkins job manually. Given the many options to do this in Jenkins, it is out of the scope of this document see Jenkins website for more details.
    1. Review the plan output in your Master's web UI.

11. Merge changes to development with git checkout -b development and git push origin development

    1. Review the apply output in your Master's web UI (You might want to use the option to "Scan Multibranch Pipeline Now" in your Jenkins Master UI).

12. Merge changes to non-production with git checkout -b non-production and git push origin non-production

    1. Review the apply output in your Master's web UI (You might want to use the option to "Scan Multibranch Pipeline Now" in your Jenkins Master UI).

13. Merge changes to production branch with git checkout -b production and git push origin production

    1. Review the apply output in your Master's web UI (You might want to use the option to "Scan Multibranch Pipeline Now" in your Jenkins Master UI).

14. You can now move to the instructions in the step 3-networks.

Run terraform locally

1. Change into 2-environments folder.
2. Run cp ../build/tf-wrapper.sh .
3. Run chmod 755 ./tf-wrapper.sh
4. Rename terraform.example.tfvars to terraform.tfvars and update the file with values from your environment and bootstrap.
5. Update backend.tf with your bucket from bootstrap. You can run for i in `find -name 'backend.tf'`; do sed -i 's/UPDATE_ME/<YOUR-BUCKET-NAME>/' $i; done. You can run terraform output gcs_bucket_tfstate in the 0-bootstap folder to obtain the bucket name.

We will now deploy each of our environments(development/production/non-production) using this script. When using Cloud Build or Jenkins as your CI/CD tool each environment corresponds to a branch is the repository for 2-environments step and only the corresponding environment is applied.

1. Run ./tf-wrapper.sh init development
2. Run ./tf-wrapper.sh plan development and review output.
3. Run ./tf-wrapper.sh apply development
4. Run ./tf-wrapper.sh init non-production
5. Run ./tf-wrapper.sh plan non-production and review output.
6. Run ./tf-wrapper.sh apply non-production
7. Run ./tf-wrapper.sh init production
8. Run ./tf-wrapper.sh plan production and review output.
9. Run ./tf-wrapper.sh apply production

If you received any errors or made any changes to the Terraform config or terraform.tfvars you must re-run ./tf-wrapper.sh plan <env> before run ./tf-wrapper.sh apply <env>