510 posts tagged with "Kubernetes"
Container orchestration, Cluster API, and self-hosted control planes
Railway's Focused PR Environments: What Changed-Only Preview Deploys Actually Save (and How to Steal the Idea for Your Own Fleet)
Railway's Focused PR Environments deploy only the services a pull request touches. We price the savings for a typical five-service monorepo, show when they matter most, and rebuild the same trick on a Kubernetes fleet you own.
Railway Ranked Its Own Rivals on Preview Environments — So We Priced the Rematch: What 50 PRs a Month Costs on Metered vs Instance Pricing vs a Namespace You Own
Railway ranked its own preview-environment rivals and conceded Render's instance pricing. A worked 50-PR-month comparison across metered, per-instance, and owned-namespace models, with the utilization crossover that decides the winner.
Shell Access Is a Loaded Gun: Securing Production Debugging on Kubernetes Before You Hand Tenants the Keys
Every PaaS ships a shell-into-production button. The hardened pattern that keeps it a convenience instead of a cross-tenant lateral-movement path: ephemeral containers, namespace-scoped RBAC, non-root debug sessions, audit logging, and allowlisted images.
Give Your Agents a Memory That Lives on Your Machines: Qdrant vs Weaviate vs pgvector
AI agents without persistent memory re-derive everything on every run. A number-backed comparison of the three self-hostable vector stores — plus the per-tenant scale ladder that picks pgvector as the default and Qdrant as the escape hatch.
Sidero Omni Wants to Deploy Your Apps Too: Where Cluster Management Ends and a Git-Push PaaS Begins
Sidero Labs plans to add application deployment to Omni, its Talos fleet manager. A row-by-row accounting of what that changes, what stays hand-built, and why a fleet manager with deploy features still isn't a git-push PaaS.
Argo CD 3.3 PreDelete Hooks: Stop Tenant Teardowns From Leaving Orphaned Wrecks
Deleting an app-of-apps tree can orphan PVCs, DNS records, and whole namespaces — or deadlock for 45 minutes. Argo CD 3.3's PreDelete hooks gate teardown on a Job that must succeed first. Tabled here: the three failure modes, a working hook, four gotchas, and a Flux fit check.
Argo CD vs Flux in 2026: 23,100 Stars vs 8,180, and What the Split Means for Your Cluster Fleet
Argo CD leads Flux 23,100 stars to 8,180, with roughly 60% vs 11% GitOps share in 2026 analyses. The gap is architecture — centralized console versus decentralized controllers — tabled here with a decision rule for Cluster-API fleets.
Hetzner Plus Scaleway: What a Second Cluster API Provider Really Costs a Self-Hosted PaaS
Scaleway's CAPS gives a Cluster API fleet a second EU-native target with hourly H100-class GPUs Hetzner doesn't sell. Here is the verdict table, the both-sides breakeven math near 48% utilization, and the five ops line items a second provider adds before you adopt it.
Carbon-Aware Kubernetes Scheduling Works in the Lab — Here's What It Takes on Rented Hardware
GreenK8s cut scheduler energy use 39% with its own solar array and Google shifts jobs across continents — a single-region fleet on rented racks can only shift in time. This post maps the published results to their lab conditions and lays out the four-step version worth building: meter with Kepler, cut idle with kube-green, gate one batch queue on a carbon forecast, and write the tenant contract.