I built a tool called *Kekkai* for file integrity monitoring in production environments. It records file hashes during deployment and later verifies them to detect unauthorized modifications (e.g. from OS command injection or tampering).Why it matters:* Many web apps (PHP, Ruby, Python, etc.) on AWS EC2 need a lightweight way to confirm their code hasn’t been changed. * Traditional approaches that rely on metadata often create false positives. * Kekkai checks only file content, so it reliably detects real changes. * I’ve deployed it to an EC2 PHP application in production, and it’s working smoothly so far.Key points:* *Content-only hashing* (ignores timestamps/metadata) * *Symlink protection* (detects swaps/changes) * *Secure S3 storage* (deploy servers write-only, app servers read-only) * *Single Go binary* with minimal dependenciesWould love feedback from others running apps on EC2 or managing file integrity in production. Comments URL: https://news.ycombinator.com/item?id=45347714 Points: 4 # Comments: 0
Show HN: Kekkai – a simple, fast file integrity monitoring tool in Go
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