Tutorials
In-depth technical tutorials, guides, and infrastructure best practices.
Kubernetes Disaster Recovery Drill: Restore Test With Velero/Longhorn
Run a real Kubernetes disaster recovery drill: destroy a K3s cluster, then restore etcd, Velero resources, and Longhorn volumes on new servers, with RPO/RTO checks.
The Complete Longhorn Troubleshooting Guide for Kubernetes Storage
Fix Longhorn degraded volume issues with this step-by-step guide covering failed replicas, stuck attachments, disk pressure, engine image errors, and backup target failures.
Enforce Signed Container Images in Kubernetes with Cosign and Kyverno
Learn how to sign container images with Cosign, store the signature in your registry, and use Kyverno's ImageValidatingPolicy to block unsigned images from running in Kubernetes.
How to Run GPU Workloads on K3s Using NVIDIA GPU Operator 26.7
Learn how to install NVIDIA GPU Operator 26.7 on K3s for bare-metal servers, verify drivers, container toolkit, device plugin, and DCGM Exporter, then run a real CUDA test workload.
Migrate Kyverno ClusterPolicy Rules to CEL Policies Before v1.20
Kyverno drops ClusterPolicy in v1.20. Learn how to migrate Kyverno ClusterPolicy to CEL with real ValidatingPolicy, MutatingPolicy, GeneratingPolicy, and ImageValidatingPolicy examples with staged rollout and PolicyException migration.
Fix SecretStore, Auth, and Sync Failures in External Secrets Operator
Fix External Secrets Operator errors: SecretStore not Ready, provider auth failures, missing keys, stale secrets, refresh issues, and RBAC problems.
How to Back Up K3s with Velero, Kopia, and S3-Compatible Storage
How to back up K3s with Velero and Kopia file-system backup, using S3-compatible storage, scheduled retention, and namespace-level restore testing.
Future of VPS Hosting Trends 2025-2030
Explore the future of VPS hosting from 2025 to 2030. How trends like AI automation, edge computing, stronger security, containerization, and greener infrastructure are expected to reshape VPS services.
How to Install Longhorn on K3s with Dedicated NVMe Storage
Install Longhorn on a multi-node K3s cluster with dedicated NVMe disks, replicas, StorageClasses, failover testing, and an S3 backup target.
Kubernetes Gateway API: Fix Routes, ReferenceGrant, and 404 Errors
Fix Kubernetes Gateway API errors. This guide covers HTTPRoute, TLSRoute, TCPRoute, ReferenceGrant, and 404/503 fixes using real status conditions and kubectl commands.
cert-manager Troubleshooting: Orders, Challenges, and Renewal Failures
Fix cert-manager errors: stuck Certificates, failed Orders, HTTP-01/DNS-01 Challenges, webhook errors, and renewal issues with kubectl and cmctl.
How to Install Kyverno 1.19 and Secure Kubernetes Workloads with CEL
Use Kyverno CEL policies to block privileged Pods, require non-root users, and allow trusted images.