Use external secrets in CI/CD

CI/CD jobs might need sensitive information, called secrets, to complete work. This sensitive information could be items like API tokens, database credentials, or private keys. Secrets are sourced from a secrets provider.

Unlike CI/CD variables which are always available in jobs, secrets must be explicitly requested by a job.

GitLab supports several secret management providers, including:

1. HashiCorp Vault
2. Google Cloud Secret Manager
3. Azure Key Vault
4. AWS Secrets Manager

These integrations use ID tokens for authentication. You can also use ID tokens to manually authenticate with any secrets provider that supports OIDC authentication with JSON web tokens (JWT).