Cloud & DevOps

Page 1 of 6

• 

  Cloud & DevOpsAugust 16, 202636 min

  Karpenter Not Scaling Up Nodes: Causes and Fixes (2026)

  Karpenter not scaling up nodes? Work through the documented causes in order — NodePool and EC2NodeClass readiness, limits, requirements, taints, and CNI IPs.

• 

  Cloud & DevOpsJuly 27, 202611 min

  Docker Compose depends_on Not Waiting? Fix It (2026)

  Docker Compose depends_on not waiting for your service to be ready? Fix it with condition: service_healthy, a proper healthcheck, and start_period in 2026.

• 

  Cloud & DevOpsJuly 8, 202612 min

  cert-manager Certificate Stuck Pending? Debug & Fix (2026)

  cert-manager Certificate stuck in pending? Debug the Certificate to Challenge resource chain and fix the HTTP-01, DNS-01, and Let's Encrypt rate-limit causes.

• 

  Cloud & DevOpsJuly 1, 202612 min

  helm upgrade --install: Idempotent Deploys (2026)

  helm upgrade --install installs a release if it's missing and upgrades it if it exists — one idempotent command. See the Helm 4 flags, gotchas, and CI pattern.

• 

  Cloud & DevOpsJune 29, 202611 min

  Custom Prometheus Metrics in Node.js + Express (2026)

  Add Prometheus metrics to a Node.js + Express app with prom-client: a /metrics endpoint, custom counters and histograms, and safe low-cardinality labels.

• 

  Cloud & DevOpsJune 26, 202611 min

  GitHub Actions: Reusable Workflow vs Composite Action 2026

  Reusable workflow vs composite action in GitHub Actions: jobs vs steps, secrets, nesting limits, and outputs—plus exactly when to use each, with YAML.

• 

  Cloud & DevOpsJune 25, 202612 min

  kubectl debug Ephemeral Containers: No-Shell Pods 2026

  Debug a no-shell distroless pod with kubectl debug and ephemeral containers: the --target flag, /proc filesystem access, and CrashLoopBackOff pod copies.

• 

  Cloud & DevOpsJune 23, 202615 min

  Migrate Terraform to OpenTofu in 2026: Encrypt Your State

  Migrate Terraform to OpenTofu with a clean tofu init -upgrade, then encrypt your existing state using PBKDF2 and AES-GCM. A step-by-step, runnable 2026 guide.

• 

  Cloud & DevOpsJune 23, 202610 min

  Vitest Coverage Thresholds: Fail CI on Low Coverage (2026)

  Set Vitest coverage thresholds that fail CI when coverage drops. Vitest 4 nested config, per-file and glob gates, plus a runnable GitHub Actions workflow.

• 

  Cloud & DevOpsJune 21, 202617 min

  Deploy a Node.js App to a VPS with Kamal 2 (2026)

  Deploy a Node.js app to a VPS with Kamal 2: a from-scratch Docker setup with zero-downtime deploys, automatic Let's Encrypt SSL, and a Postgres accessory.

• 

  Cloud & DevOpsJune 18, 202614 min

  AWS CDK Testing in TypeScript: Test Before Deploy 2026

  Learn AWS CDK testing in TypeScript: write fine-grained assertions, snapshot tests, and Aspect validation with Jest to catch infra bugs before you deploy.

• 

  Cloud & DevOpsJune 16, 202610 min

  Resize Kubernetes Pods Without Restart (2026 Guide)

  Resize a running Kubernetes pod's CPU and memory without restarting it using in-place resize: kubectl commands, resizePolicy, QoS rules, and limitations.