510 posts tagged with "Kubernetes"
Container orchestration, Cluster API, and self-hosted control planes
From One Box to a Fleet: A Second-Machine Migration Playbook for Coolify, Dokploy, and CapRover Teams Moving to Cluster API
Outgrown your single-box PaaS? A phase-by-phase playbook for moving live workloads from Coolify, Dokploy, or CapRover onto a Cluster-API-managed Hetzner fleet — with a stay-or-go checklist, data-migration options, and a weighted DNS cutover that keeps the old box as rollback.
From $3K Kubernetes to $200 Fly.io: What a Six-Month Reverse-Migration Receipt Actually Proves
A small team moved from self-run Kubernetes at $3,000 a month to Fly.io at $200, with six months of outage history to show for it. The line-by-line ledger, where the $200 breaks, and a six-point checklist for trusting any migration receipt.
Gateway API 1.6 Puts v1alpha2 Routes on Death Row and Moves Experiments to x-k8s.io: A Migration Guide
Gateway API 1.6 graduates TCPRoute and UDPRoute to v1, deprecates v1alpha2, and moves experiments to x-k8s.io — with one controller already broken today and TLSRoute showing what happens to stragglers. A six-step runbook for fleets still on the old channel.
Headlamp's Cluster API Plugin: The Free Fleet Dashboard the Old Kubernetes Dashboard Never Got
Headlamp shipped a free Cluster API plugin that puts Machines, MachineDeployments, and fleet health in a browser UI. A task-by-task verdict on what it replaces, what still needs kubectl, and why a PaaS should deploy it for operators but not tenants.
K3k Puts a Whole Kubernetes Control Plane in Every Tenant's Hands: What Virtual Clusters Cost and Buy on Shared Hardware
Rancher's K3k runs a full K3s control plane per tenant as pods on one shared host cluster. Shared mode reflects workloads onto host nodes for near-namespace density; virtual mode nests whole clusters at two to three times the control-plane cost. The mode table, the 100-tenant overhead math, and where the isolation actually stops.
Kepler Rewrote Its Power Meter in v0.10: Re-Test Your Per-Pod Energy Numbers Before They Become the Showback Default
Kepler v0.10 replaced its eBPF measurement engine with direct hardware-meter reads. The numbers got cheaper to collect but rest on a different accuracy contract — here is the verdict table and a six-step re-validation runbook before per-pod joules become tenant showback.
Kubeflow Grew Up in 2026 — Here's What Your PaaS Should Steal (and What to Leave Alone)
Kubeflow graduated CNCF in August 2026 with Kale 2.0 and a rebuilt Trainer for distributed AI and HPC. A borrow-vs-skip guide for PaaS teams running agent sandboxes: take JobSet, Kueue, and DRA-aware placement, leave the platform behind.
Delete Your Validating Webhook: What Kubernetes 1.36 Declarative Validation GA Actually Means for PaaS Operators
Kubernetes 1.36 graduated declarative validation to GA — but CRD CEL rules shipped in 1.29. What each milestone means for platforms defining App and Tenant CRDs, with a before/after webhook deletion guide.
Kubernetes 1.37 Let HPA Scale to Zero: Do You Still Need KEDA?
Kubernetes 1.37 graduates HPA scale-to-zero to beta, on by default. A worked idle-bill example on Hetzner metal shows when native HPA replaces KEDA's HTTP add-on — and why queues and events still belong to KEDA.