Tag: war-stories
All the articles with the tag "war-stories".
Running VMs inside pods in 2016, before Kata existed
The fifth post in the CertaScale series, and the one the earlier posts kept promising: running full virtual machines inside Kubernetes pods in 2016, before Kata Containers existed and before RuntimeClass was a thing. A pod is just a namespace boundary and a lifecycle. Put KVM inside it and a VM schedules, migrates, and dies like a pod.
A flat network, GCP-style, on early Kubernetes
The fourth post in the CertaScale series, and the idea I'm proudest of: a flat overlay borrowed from how Google Cloud addresses machines. /32 addresses plus routes, an address operator handing out CRDs from a pool, and the reason we built all of it — moving a workload between nodes without it losing its IP.
Giving Kubernetes an enterprise network
The third post in the CertaScale series. Our customer was building a private cloud that had to drop into any enterprise's network, so we spoke the language every enterprise already speaks and extended it to Kubernetes pods: VLANs, static and DHCP addressing, and RFC 4594 QoS.
Finding ovn-kubernetes when it was seven days old
The second post in the CertaScale series. Handed a failed project and a title, I inherited a broken Vagrant file that created a single bridge, panic-googled my way to a week-old repo, learned OVS internals the hard way, and rewrote our side from Python to Go when the team changed.
The private cloud we built before it was cool
From 2016 to 2019 I helped build a private cloud on top of very early Kubernetes, with a drag-and-drop canvas, VMs running inside pods before Kata existed, and an enterprise-grade network layer I led, from GCP-style flat overlays to a 12-to-60 Gbps DPDK data path. The company is gone. The story shouldn't be.