Posts involving my container orchestration system, Orion
Orion
The Ephemeris is the part of Orbit I was most nervous about, because it's the part that has to be correct. Telemetry can drop a sample and shrug. The ledger cannot drop a placement, can't double-book a node, and can't disagree with itself
Orion
Before Orbit can place a workload or reclaim a core, it has to know how to say what a workload is. That sounds like the boring part. It isn't. The shape of the object model is where Borg and Kubernetes both left scars, in opposite directions, and getting
Orion
Last post I said the most important decision in Orbit is splitting cluster state into two planes, and then I made you wait for it. Here it is. If you only read one post in this series, read this one, because almost everything else is downstream of this single cut.
Orion
Everyone tells you not to build your own cluster manager. They're mostly right. Kubernetes exists, it works, it used all over the place...better job prospects if you use K8s. Building another one is the kind of decision that gets you eyerolls in conversation. So let me undermine