Node NotReady at 2AM: A Recovery Walkthrough
A node went NotReady at 2AM. Triage kubelet, disk pressure, and network partitions, then decide when to cordon, drain, or wait.
Read the postAuthor: <span>conndeck team</span>
ImagePullBackOff: Every Cause I’ve Actually Hit
ImagePullBackOff has four real causes: bad tags, registry auth, rate limits, and network. Learn to read the pull error and fix the right one.
Read the postDNS Works on My Laptop: CoreDNS Failures in Kubernetes
In-cluster DNS failing while your laptop resolves fine? Debug ndots:5 query amplification, the UDP conntrack race, CoreDNS health, and scaling, step by step.
Read the postThe Day Our Staging Cluster Ran Out of IP Addresses
Pods stuck in ContainerCreating, cryptic CNI errors, and a /24 subnet with zero free IPs. A war story about why 'just staging' still needs capacity planning.
Read the postInside the Kubernetes Scheduler: Why Your Pods Land Where They Do
A deep dive into kube-scheduler internals: filtering vs scoring, topology spread math, PriorityClass preemption, scheduler profiles, and why the descheduler exists.
Read the postkubectl apply Is Lying to You (and What to Do About It)
kubectl apply says 'configured' and you believe it. Here's why declared YAML and real cluster state drift apart, and how to actually close the loop.
Read the postGKE Autopilot Internals: What Google Actually Runs for You
How GKE Autopilot actually works under the abstraction: per-pod billing vs node provisioning, compute classes, upgrade mechanics, and where it quietly costs 2x.
Read the postGitOps Is a Discipline, Not a Tool
Installing ArgoCD doesn't make you a GitOps shop. Here's why the tool changes nothing until the team agrees to stop running kubectl apply from their laptops.
Read the postEKS Networking: VPC CNI, Prefix Delegation, and the IP Math
ENI slot math, /28 prefix delegation, warm pool tuning, and the failure modes that page you at 2 AM — an operator's guide to EKS pod networking.
Read the postEKS vs AKS vs GKE at Scale: The Differences That Show Up in Production
An opinionated EKS vs AKS vs GKE comparison for teams running 10+ production clusters: pricing, forced upgrades, quota friction, and multi-cluster tooling.
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