This Blog Deploys Itself: Self-Hosted CI/CD on k3s with GitHub ARC
TL;DR The blog is deployed by GitHub Actions runners running inside the same k3s cluster it’s talking about. A push to main with content under hugo/ triggers a build, a two-pass S3 sync, and a CloudFront invalidation. A daily 06:00 UTC cron handles future-dated posts so I can commit a backlog and let them drip out on schedule. After every successful deploy, a Playwright job kicks off and scans the live site for broken links, visual regressions, and security header compliance. The whole thing runs on eight self-hosted amd64 runners managed by GitHub’s Actions Runner Controller (ARC) in the cluster. Not a single managed CI minute gets billed. ...