Update n8n configuration and dependencies.

Change Summary

This commit introduces several updates primarily focused on improving the infrastructure as code (IaC) configuration for the n8n module. Key changes include updating pre-commit hooks, modifying the Terraform configuration for n8n, and updating the ArgoCD provider version.

Technical Details

Pre-Commit Configuration

• File: .pre-commit-config.yaml
• Change: Updated the pre-commit hook from terraform-fmt to tofu-fmt.
• Reason: This reflects the transition from Terraform to OpenTofu, ensuring formatting consistency with the new tool.

Terraform Configuration for n8n

• File: IaC/modules/n8n/main.tf
• Changes:
  • Updated the ArgoCD image list annotation to use n8nio/n8n:1.122.x instead of n8nio/n8n:1.x.
  • Changed the target revision of the Helm chart from 1.0.10 to 2.0.x.
  • Removed the explicit image tag specification, relying on the new versioning scheme.
  • Added className = "traefik" to the ingress configuration.
  • Updated the path type for the ingress rule to ImplementationSpecific.

ArgoCD Provider Version

• File: IaC/production/homelab/n8n/.terraform.lock.hcl
• Change: Updated the ArgoCD provider version from 7.12.3 to 7.12.4.
• Reason: To incorporate the latest fixes and improvements in the ArgoCD provider.

Key Learnings & Insights

• Transition to OpenTofu: The change from terraform-fmt to tofu-fmt highlights the project’s shift towards OpenTofu, promoting adherence to the new standard.
• Version Management: Specifying a more precise version range (1.122.x) for the n8n image ensures better control over updates and reduces the risk of breaking changes.
• Helm Chart Upgrades: Moving to a newer version of the Helm chart (2.0.x) likely introduces new features and improvements, enhancing the deployment process.
• Ingress Configuration: Adding the traefik class name and updating the path type to ImplementationSpecific ensures compatibility with the underlying ingress controller.

Impact Assessment

• Performance: The changes are unlikely to have a significant performance impact but may introduce new features and improvements from the updated Helm chart and ArgoCD provider.
• Security: Using a more specific version range for the n8n image enhances security by reducing the attack surface.
• Maintainability: The updates improve maintainability by aligning with the latest standards and practices in IaC management.

Developer Notes

• Gotchas: Ensure that the OpenTofu transition is complete and that all team members are aware of the changes to avoid formatting issues.
• Edge Cases: Verify the ingress configuration with the Traefik controller to ensure compatibility.
• Future Improvements: Consider automating the version update process for dependencies to streamline future updates.