Upgrades, workflow creation, and HCL updates.

Change Summary

This commit introduces several significant changes to the project’s infrastructure as code (IaC) and CI/CD workflows. Key changes include the addition of new GitHub Actions workflows for deploying and planning infrastructure using Terragrunt, updates to configuration files for metrics and providers, a version bump for certain dependencies, and the introduction of a mise.toml file for managing tool versions.

Technical Details

• New Workflows:
  • .github/workflows/deploy.yml: This workflow triggers on pushes to the main branch and manual dispatches. It performs checks on Terragrunt HCL files and then deploys the infrastructure.
  • .github/workflows/plan.yml: This workflow triggers on pull requests to the main branch. It performs the same checks as the deploy workflow but runs a terragrunt plan instead of apply.
• Configuration Updates:
  • IaC/_envcommon/metrics.hcl: Included a new kube_provider configuration.
  • IaC/_envcommon/providers/helm.hcl and IaC/_envcommon/providers/kube.hcl: Updated the config_path to use pathexpand for better compatibility.
• Dependency Updates:
  • IaC/modules/metrics/main.tf: Downgraded the metrics-server Helm chart version from 3.13 to 3.12.2.
  • Various .terraform.lock.hcl files: Updated the version of the argoproj-labs/argocd provider from 7.12.3 to 7.12.4.
  • mise.toml: Added to manage versions of terragrunt and opentofu.

Key Learnings & Insights

• Automation and CI/CD: The introduction of GitHub Actions workflows for deploying and planning infrastructure demonstrates a shift towards more automated and reliable CI/CD practices. This ensures that infrastructure changes are thoroughly tested before deployment.
• Version Management: The use of mise.toml for tool version management indicates a best practice for maintaining consistent tool versions across different environments, reducing the risk of version-related bugs.
• Configuration Best Practices: The update to use pathexpand in provider configurations shows an improvement in path handling, making the configurations more robust and less prone to errors.

Impact Assessment

• Performance: The changes are unlikely to have a direct impact on performance. However, the version updates and configuration changes aim to enhance reliability and maintainability.
• Security: Ensuring that HCL files are correctly formatted and that dependencies are up-to-date contributes to a more secure infrastructure.
• Maintainability: The introduction of automated workflows and consistent tool version management will make the infrastructure easier to maintain and update in the future.

Developer Notes

• Gotchas: Ensure that the mise.toml file is correctly configured and that all developers are using the specified tool versions to avoid compatibility issues.
• Edge Cases: Pay attention to the version constraints in .terraform.lock.hcl files to ensure that the correct versions of providers are used.
• Future Improvements: Consider adding more comprehensive testing to the CI/CD workflows to further enhance the reliability of infrastructure changes.