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linux

Posts related to linux.

Oct 20, 20265 min readcompliance / devsecops / azure / linux

Immutable Infrastructure Meets NIS2: The Case for Minimal, Hardened Container Hosts

Azure Linux 4.0-style minimal hosts — no GUI, SELinux enforcing by default, atomic rollbacks — are becoming the compliance-friendly default for container fleets. The operational and regulatory case, the migration friction nobody advertises, and an opinion on timing.

Sep 22, 20265 min readdocker / linux / sre / containers

Docker Under the Hood: The Runtime Anatomy Every Infrastructure Engineer Should Know

CLI, dockerd, containerd, runc, and the kernel primitives underneath — namespaces and cgroups. Why the layered anatomy matters operationally, what each layer owns, and where incidents actually live. A back-to-fundamentals piece.