DevOps'ish 309: Dirty Pages All the Way Down, The Cloud Is Hot, and more
The Linux kernel vulnerabilities are coming in hot and heavy. I don’t think I’ve ever updated a kernel due to security issues this frequently before. I fear CopyFail, Dirty Frag, and Fragnesia are the tip of a much bigger iceberg below the surface. There will be more, and they could come very quickly as more flaws in the kernel’s page cache logic are discovered, as more and more eyeballs focus on this exploit vector. As always, build safety into your systems and processes to make upgrades and reboots as painless as possible. Stay safe out there. How to migrate your paging tool without breaking your team Most teams treat a paging tool migration as a like-for-like swap. Mistake. Paging is ~10% of incident management. The other 90% (triage, comms, postmortems) is where teams actually break. SPONSORED Fleet-Scale Kubernetes: An Operating Model for Homogeneous Clusters with Decoupled Capacity - The case for managing fleets of many small, homogeneous Kubernetes clusters with decoupled capacity provisioning through a standardized autoscaler contract, rather than trying to scale individual clusters or unify across specialized cluster types. ...