https://www.pistack.xyz/tags/kubernetes/Recent content in Kubernetes on Pi StackHugoen-usTue, 21 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/2026-04-21-flannel-vs-calico-vs-cilium-self-hosted-kubernetes-cni-guide-2026/Tue, 21 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/2026-04-21-flannel-vs-calico-vs-cilium-self-hosted-kubernetes-cni-guide-2026/<p>Every Kubernetes cluster needs a Container Network Interface (CNI) plugin to handle pod-to-pod communication, service discovery, and network policy enforcement. Choosing the right CNI is one of the most impactful infrastructure decisions you&rsquo;ll make — it affects network performance, security posture, operational complexity, and the features available to your workloads.</p>https://www.pistack.xyz/posts/kubevirt-vs-harvester-vs-opennebula-self-hosted-virtualization-platforms-2026/Tue, 21 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/kubevirt-vs-harvester-vs-opennebula-self-hosted-virtualization-platforms-2026/<p>Running virtual machines in your own data center or home lab has never been more flexible. While traditional hypervisors like Proxmox VE and VMware ESXi have dominated the space for years, a new generation of cloud-native virtualization platforms is emerging. These tools let you manage VMs alongside containers using the same Kubernetes-native APIs, or provide full cloud-platform orchestration across bare metal clusters.</p>https://www.pistack.xyz/posts/2026-04-21-talos-linux-vs-flatcar-vs-bottlerocket-immutable-container-os-guide-2026/Tue, 21 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/2026-04-21-talos-linux-vs-flatcar-vs-bottlerocket-immutable-container-os-guide-2026/<p>When running containerized workloads at scale, the traditional general-purpose Linux distribution — with its package manager, shell access, and mutable filesystem — is more of a liability than an asset. Immutable operating systems eliminate entire classes of problems: configuration drift, unauthorized changes, unnecessary attack surfaces, and unpredictable updates.</p>https://www.pistack.xyz/posts/volcano-vs-yunikorn-vs-kueue-kubernetes-batch-scheduler-guide-2026/Tue, 21 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/volcano-vs-yunikorn-vs-kueue-kubernetes-batch-scheduler-guide-2026/<p><a href="https://kubernetes.io/">kubernetes</a> was designed primarily for long-running services, not batch workloads. The default scheduler makes no distinction between a web server that needs to stay up 24/7 and a data processing job that should run to completion and exit. For organizations running high-performance computing (HPC), machine learning training, ETL pipelines, or any job-queueing workload on self-hosted Kubernetes clusters, the default scheduler falls short.</p>https://www.pistack.xyz/posts/2026-04-20-external-secrets-operator-vs-sealed-secrets-vs-vault-secrets-operator-kubernetes-secrets-management-2026/Mon, 20 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/2026-04-20-external-secrets-operator-vs-sealed-secrets-vs-vault-secrets-operator-kubernetes-secrets-management-2026/<p>Managing secrets in <a href="https://kubernetes.io/">kubernetes</a> is one of the most critical challenges for platform engineers running self-hosted clusters. The native <code>Secret</code> object stores data as base64-encoded strings — not encrypted at rest by default — making it unsuitable for production workloads without additional tooling.</p>https://www.pistack.xyz/posts/2026-04-20-kube-bench-vs-trivy-vs-kubescape-container-kubernetes-hardening-guide-2026/Mon, 20 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/2026-04-20-kube-bench-vs-trivy-vs-kubescape-container-kubernetes-hardening-guide-2026/<p>Running containers and <a href="https://kubernetes.io/">kubernetes</a> clusters in production without security scanning is like leaving your server&rsquo;s front door unlocked. Misconfigurations, outdated base images, overly permissive RBAC policies, and exposed secrets are the top causes of container breaches. The good news: you don&rsquo;t need expensive commercial tools to catch them.</p>https://www.pistack.xyz/posts/opencost-vs-goldilocks-vs-crane-kubernetes-cost-monitoring-guide-2026/Mon, 20 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/opencost-vs-goldilocks-vs-crane-kubernetes-cost-monitoring-guide-2026/<p><a href="https://kubernetes.io/">kubernetes</a> clusters are notorious for silent budget blowouts. Without proper visibility, teams over-provision CPU and memory, pay for idle pods, and struggle to allocate cloud spend across namespaces and teams. Self-hosted Kubernetes cost monitoring tools solve this by providing real-time cost allocation, resource optimization recommendations, and FinOps-grade reporting — all within your own infrastructure.</p>https://www.pistack.xyz/posts/rook-vs-longhorn-vs-openebs-self-hosted-kubernetes-storage-guide-2026/Mon, 20 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/rook-vs-longhorn-vs-openebs-self-hosted-kubernetes-storage-guide-2026/<p>Running stateful workloads on <a href="https://kubernetes.io/">kubernetes</a> requires reliable, performant, and self-managed persistent storage. While cloud providers offer managed block and file storage out of the box, self-hosted Kubernetes clusters need their own storage layer. That&rsquo;s where CNCF-grade storage orchestrators come in.</p>https://www.pistack.xyz/posts/tekton-vs-argo-workflows-vs-jenkins-x-self-hosted-kubernetes-native-cicd-guide-2026/Mon, 20 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/tekton-vs-argo-workflows-vs-jenkins-x-self-hosted-kubernetes-native-cicd-guide-2026/<p>When your infrastructure runs on <a href="https://kubernetes.io/">kubernetes</a>, running your build pipelines on anything else introduces unnecessary com<a href="https://www.plex.tv/">plex</a>ity. Traditional CI/CD systems like Jenkins or GitLab CI were designed for VM-era infrastructure — they manage their own agents, build queues, and storage outside of your cluster. Kubernetes-native pipelines eliminate that gap by treating builds as first-class cluster resources.</p>https://www.pistack.xyz/posts/2026-04-19-argo-rollouts-vs-flagger-vs-spinnaker-progressive-delivery-guide-2026/Sun, 19 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/2026-04-19-argo-rollouts-vs-flagger-vs-spinnaker-progressive-delivery-guide-2026/<p>Progressive delivery has replaced traditional blue-green and canary deployments as the standard for releasing software safely in production. Instead of flipping a switch and hoping for the best, progressive delivery tools automatically shift traffic between old and new versions while monitoring key metrics — rolling back instantly if something goes wrong.</p>https://www.pistack.xyz/posts/kubernetes-dashboard-vs-headlamp-vs-k9s-cluster-management-guide-2026/Sun, 19 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/kubernetes-dashboard-vs-headlamp-vs-k9s-cluster-management-guide-2026/<p>Managing <a href="https://kubernetes.io/">kubernetes</a> clusters through <code>kubectl</code> alone becomes exhausting as the number of workloads, namespaces, and services grows. You need visibility into pod health, log aggregation, resource consumption, and the ability to quickly restart failing deployments — all without typing long command strings.</p>https://www.pistack.xyz/posts/openfaas-vs-knative-vs-openwhisk-self-hosted-faas-serverless-guide-2026/Sun, 19 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/openfaas-vs-knative-vs-openwhisk-self-hosted-faas-serverless-guide-2026/<p>Serverless computing doesn&rsquo;t have to mean vendor lock-in. Function-as-a-Service (FaaS) platforms let you deploy event-driven code without managing servers, but public cloud offerings come with unpredictable billing, cold starts, and limited customization. Self-hosted FaaS platforms give you full control over your compute infrastructure while keeping the developer experience of writing and deploying individual functions.</p>https://www.pistack.xyz/posts/velero-vs-stash-vs-volsync-kubernetes-backup-orchestration-guide-2026/Sun, 19 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/velero-vs-stash-vs-volsync-kubernetes-backup-orchestration-guide-2026/<p>Running workloads on <a href="https://kubernetes.io/">kubernetes</a> without a reliable backup strategy is like building a house on sand. Pods get evicted, nodes fail, storage classes change, and entire clusters can disappear. While Kubernetes handles scheduling and scaling well, <strong>backup and disaster recovery is entirely your responsibility</strong>.</p>https://www.pistack.xyz/posts/containerd-vs-cri-o-vs-podman-self-hosted-container-runtimes-guide-2026/Sat, 18 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/containerd-vs-cri-o-vs-podman-self-hosted-container-runtimes-guide-2026/<p>Every container you run — whether it&rsquo;s a web server, database, or microservice — depends on a <strong>container runtime</strong> underneath. The runtime is the low-level software that actually creates, manages, and tears down containers on your host system.</p>https://www.pistack.xyz/posts/ebpf-networking-observability-cilium-pixie-tetragon-guide-2026/Fri, 17 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/ebpf-networking-observability-cilium-pixie-tetragon-guide-2026/<p>The eBPF (extended Berkeley Packet Filter) revolution has fundamentally changed how we observe, secure, and manage network infrastructure. Born from the Linux kernel, eBPF allows sandboxed programs to run inside the kernel without modifying kernel source code or loading modules. This means you can intercept network packets, trace system calls, monitor application performance, and enforce security policies — all with near-zero overhead and no instrumentation changes to your applications.</p>https://www.pistack.xyz/posts/self-hosted-chaos-engineering-litmus-chaos-mesh-chaos-toolkit-guide-2026/Thu, 16 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/self-hosted-chaos-engineering-litmus-chaos-mesh-chaos-toolkit-guide-2026/<h2 id="why-chaos-engineering-matters-in-2026">Why Chaos Engineering Matters in 2026</h2> <p>Every system fails eventually. The question isn&rsquo;t <em>if</em> something will break — it&rsquo;s <em>when</em>, and how well your team responds when it does. Chaos engineering is the disciplined practice of running controlled experiments on production and staging systems to uncover weaknesses before they cause real outages.</p>https://www.pistack.xyz/posts/k3s-vs-k0s-vs-talos-linux-self-hosted-kubernetes-guide-2026/Thu, 16 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/k3s-vs-k0s-vs-talos-linux-self-hosted-kubernetes-guide-2026/<p>Running Kubernetes at home used to mean provisioning a full cluster with kubeadm — multiple control-plane nodes, etcd backups, manual CNI setup, and hours of configuration. That changed with the rise of lightweight Kubernetes distributions designed specifically for edge computing, homelabs, and self-hosted workloads.</p>https://www.pistack.xyz/posts/argocd-vs-flux-self-hosted-gitops-guide/Mon, 13 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/argocd-vs-flux-self-hosted-gitops-guide/<p>GitOps has fundamentally changed how teams deploy and manage infrastructure. Instead of running ad-hoc scripts or clicking through dashboards, GitOps treats your Git repository as the single source of truth for your entire system state. Two open-source platforms dominate this space: <strong>ArgoCD</strong> (a CNCF graduated project originally built by Intuit) and <strong>Flux</strong> (a CNCF graduated project originally built by Weaveworks).</p>https://www.pistack.xyz/posts/self-hosted-service-mesh-consul-linkerd-istio-guide/Mon, 13 Apr 2026 00:00:00 +0000https://www.pistack.xyz/posts/self-hosted-service-mesh-consul-linkerd-istio-guide/<p>Service meshes have become the backbone of modern microservice architectures. They handle service-to-service communication, enforce security policies, provide observability, and manage traffic — all without requiring changes to your application code. But choosing the right mesh for your self-hosted infrastructure is not straightforward. The three dominant open-source options — Consul Connect, Linkerd, and Istio — each take fundamentally different approaches.</p>