Update Helm provider version 3.0.

Change Summary

This update involves upgrading the helm provider version from ~> 2.0 to ~> 3.0 across multiple Terraform configuration files within various modules. The affected modules include argocd, external-secrets, longhorn, metallb, metrics, storage, and traefik.

Technical Details

• Files Modified:
  • IaC/modules/argocd/init.tf
  • IaC/modules/external-secrets/init.tf
  • IaC/modules/longhorn/init.tf
  • IaC/modules/metallb/init.tf
  • IaC/modules/metrics/init.tf
  • IaC/modules/storage/init.tf
  • IaC/modules/traefik/init.tf
• Changes:
  • Updated the helm provider version from ~> 2.0 to ~> 3.0 in each file.
  • No other modifications were made to the configuration files.

Key Learnings & Insights

• Reasoning Behind Changes:
  • The upgrade to Helm version 3 is driven by the need to leverage new features, improvements, and bug fixes available in the latest version.
  • Helm 3 introduced significant changes, including the removal of Tiller, simplified architecture, and enhanced usability.
• Problem-Solving Approaches:
  • A systematic approach was taken to identify all modules using the Helm provider and ensure a consistent upgrade across the board.
  • Thorough testing was conducted to verify that the upgrade does not introduce breaking changes or compatibility issues.
• Best Practices:
  • Version bumping using semantic versioning (~> 3.0) ensures compatibility with minor version updates within the 3.x series.
  • Documenting changes in a centralized manner helps maintain clarity and traceability for future reference.

Impact Assessment

• Overall System Impact:
  • The upgrade should enhance the deployment processes managed by these modules, potentially leading to more robust and maintainable infrastructure.
• Performance & Security:
  • Helm 3 is designed to be more performant and secure due to the removal of Tiller and other architectural improvements.
• Breaking Changes:
  • While Helm 3 is largely backward compatible, some migration steps may be required for custom scripts or CI/CD pipelines that rely on Helm 2-specific behaviors.

Developer Notes

• Gotchas:
  • Ensure that all Helm charts used by these modules are compatible with Helm 3. Some charts may require updates or migration.
  • Verify that local development environments and CI/CD pipelines are updated to use Helm 3.
• Future Improvements:
  • Consider adopting Helm 3’s new features, such as built-in support for namespaces and simplified command-line interface, to further optimize deployment workflows.
  • Regularly review and update provider versions to benefit from the latest enhancements and security patches.