In Sep 2025, delivered a temporary CMP-based integration enabling ArgoCD to manage manifests generated by Helmfile for cloudnativedaysjp/cnd-handson. Implemented a ConfigMap for Helmfile plugin configuration and patched the repo-server deployment to run Helmfile as a sidecar, establishing a bridge between Helmfile-driven manifests and ArgoCD for more consistent, repeatable deployments. This work lays groundwork for a fuller CMP strategy and is tracked under a focused commit.

March 2025 monthly summary for cloudnativedaysjp/cnd-handson: Delivered automation, reliability, and monitoring enhancements that drive faster, safer deployments and improved analytics. Key achievements include upgrading Argo CD to 7.8.7 with improved CLI login (username/password) support, introducing CLI commands to create Argo CD applications for Blue/Green, Canary, Job Analysis, Web Analysis, and Prometheus Analysis, fixing Prometheus connectivity by including the default port 9090, and upgrading the Argo Rollouts Helm chart to a newer version while preserving core behavior. Impact: reduced manual steps, shorter release cycles, better deployment safety, and more robust monitoring pipelines. Technologies: Argo CD, Argo Rollouts, Helm, Kubernetes, CLI tooling, deployment strategies (Blue/Green, Canary), and Prometheus.