How to Fix Kubernetes Pods Stuck in Pending: Causes and Commands (2026)
Pods stuck in Pending? Read the FailedScheduling event, then fix the cause: insufficient cpu or memory, untolerated taints, node affinity, unbound PVCs and volume zones, topology spread, quotas, scheduling gates, or Karpenter and Cluster Autoscaler not scaling.
12 minOct 20, 2026Fix Kubernetes OOMKilled and Exit Code 137: Step-by-Step Guide (2026)
How to fix OOMKilled and exit code 137 in Kubernetes: confirm the kill with lastState, tell a cgroup limit OOM from node OOM and eviction, read working set vs RSS, size JVM, Node.js, Go and Python memory to the limit, find leaks, and right-size with VPA and in-place resize.
12 minOct 20, 2026How to Write Kubernetes NetworkPolicies: Default Deny to Egress (2026)
Step-by-step Kubernetes NetworkPolicy guide for 2026: default deny, allowing DNS, namespace and pod selectors, egress control, Cilium and Calico support, ClusterNetworkPolicy v1alpha2, testing with netshoot, and a troubleshooting table for blocked traffic.
14 minOct 20, 2026How to Fix ImagePullBackOff and ErrImagePull in Kubernetes (2026)
Fix Kubernetes ImagePullBackOff and ErrImagePull step by step: read the real event message, then fix wrong tags, moved Bitnami images, imagePullSecrets, ECR and Artifact Registry node permissions, Docker Hub 429 rate limits and arm64/amd64 mismatches.
13 minOct 20, 2026How to Troubleshoot Kubernetes DNS and CoreDNS: Step by Step (2026)
A step-by-step guide to fixing Kubernetes DNS: test from a dnsutils pod, read resolv.conf and ndots:5, check CoreDNS pods, endpoints, logs and metrics, fix NXDOMAIN, SERVFAIL and i/o timeout errors, the 5-second conntrack race, and install NodeLocal DNSCache.
13 minOct 20, 2026Kubernetes Cost Optimization in 2026: 8% CPU Use and What Fixes It
Kubernetes cost optimisation as of October 2026: Cast AI measures 8% CPU and 20% memory utilisation, Datadog puts 83% of container cost on idle, plus OpenCost vs IBM Kubecost 3.0, Karpenter 1.15 Balanced consolidation, in-place resize, spot and Graviton.
12 minOct 20, 2026Kubernetes Autoscaling Explained (2026): HPA, VPA, KEDA and Karpenter
Kubernetes autoscaling in 2026, explained: HPA v2 behavior and the new tolerance field, HPA scale to zero in 1.37, VPA 1.8 in-place resize, KEDA 2.21, Cluster Autoscaler vs Karpenter 1.15, GKE and AKS node auto-provisioning, and the mistakes that cost money.
13 minOct 20, 2026Is Kubernetes Still Worth It in 2026? v1.37, 82% in Production, Real Costs
Is Kubernetes worth it in 2026? What v1.34 to v1.37 shipped, what the CNCF survey's 82% production figure means, what EKS Auto Mode, GKE Autopilot and AKS Automatic cost, when ECS, Cloud Run, Nomad or Fly fit better, and a decision framework for small teams.
12 minOct 20, 2026Ingress NGINX Is Retired: What Replaces It and How to Choose in 2026
Ingress NGINX stopped receiving fixes in March 2026 after seven CVEs in its final seven weeks. What retirement means, why IngressNightmare mattered, where Gateway API stands at v1.6, and how to pick between Envoy Gateway, Cilium, Istio, NGINX Gateway Fabric, Traefik and kgateway.
13 minOct 20, 2026How to Set Up Grafana Loki on Kubernetes with Alloy (2026)
Step-by-step Grafana Loki 3.7 setup on Kubernetes: the new grafana-community Helm chart, deployment modes, S3 storage, Grafana Alloy replacing end-of-life Promtail, labels vs structured metadata, LogQL, retention, and fixes for 429 and too many outstanding requests.
12 minOct 20, 2026Argo CD vs Flux in 2026: GitOps After Argo CD 3.5 and Flux 2.9
Argo CD vs Flux in 2026: what changed in Argo CD 3.0 to 3.5 and Flux 2.6 to 2.9, who maintains Flux after Weaveworks, what the CNCF surveys say about adoption, how each handles multi-cluster and secrets, and where GitOps costs more than it saves.
13 minOct 20, 2026How to Fix Kubernetes CrashLoopBackOff: Causes and Commands (2026)
Fix Kubernetes CrashLoopBackOff step by step: what the state means, the 10s to 5 minute backoff and the new per-node max in 1.35+, kubectl describe and logs --previous, exit codes 1, 127, 137 and 143, probe and OOM causes, and kubectl debug for crashing containers.
13 minOct 20, 2026How to Fix 502 Bad Gateway and 504 Gateway Timeout Errors (2026)
Fix 502 Bad Gateway and 504 Gateway Timeout step by step: find which hop generated the error, read NGINX upstream errors, fix keepalive and idle timeout mismatches (ALB 60s, GCP 600s), Kubernetes readiness and rollout gaps, Gateway API timeouts and Cloudflare 520 to 526.
15 minOct 20, 2026How to Detect Runtime Threats with Falco on Kubernetes (2026)
Step-by-step Falco 0.45 setup on Kubernetes: Helm chart 9.2.0 with the modern eBPF driver, default and custom rules, Falcosidekick alerts to Slack, tuning noise, Falco Talon response actions, drop metrics, and a troubleshooting table for driver errors.
15 minOct 20, 2026How to Use External Secrets Operator with Vault on Kubernetes (2026)
Step-by-step External Secrets Operator v2.13 setup with HashiCorp Vault, OpenBao or AWS Secrets Manager: Helm install, Kubernetes auth, ClusterSecretStore, ExternalSecret, rotation and reloads, ESO's 2025 release pause, alternatives, and fixes for SecretSyncedError.
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