How OIDC can simplify authentication of GitLab CI/CD pipelines with Google Cloud
- Introduction: OIDC can simplify authentication of GitLab CI/CD pipelines with Google Cloud. GitLab 15.7 introduced ID tokens for secure OIDC integration.
- Use of OIDC: OIDC authentication is recommended to reduce the risk of attack, as static keys can be easily compromised over time.
- OIDC Integration: GitLab CI and Google Cloud integration involves creating a service account in Google Cloud, setting up roles, creating a Workload Identity pool and provider, and assigning the Workload Identity User role to the service account.
- GitLab CI Template: GitLab CI template simplifies OIDC authentication by using an ID token issued on GitLab CI, eliminating the need for a Google Cloud service account key.
- Terraform Module: The Terraform module takes care of creating the Google Cloud Workload Identity Pool, with further configuration options available.
- CI Template Usage: GitLab CI becomes easy to use with OIDC authentication using the provided CI template.
- Next Steps: The article suggests the steps to set up a service account, grant permissions, run the Terraform module, and set up the CI pipeline for OIDC integration between Google Cloud and GitLab CI.