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DevOps & Cloud,
verified.
Practical tutorials, comparisons and troubleshooting for Kubernetes, Terraform, Docker and CI/CD. No fluff, just verified solutions.
This week's verified picks
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Tutorial
Claude Code Security Skills: A DevSecOps Playbook
Build Claude Code security skills that scan for secrets, run SAST, and test prompt injection, then enforce them with hooks and subagents in CI.
Intermediate devsecops · 45 minutes
Comparison
OpenTelemetry Collector vs Grafana Alloy: 2026 Guide
A hands-on comparison of the OpenTelemetry Collector and Grafana Alloy in 2026, covering config syntax, pipeline architecture, and when to pick each.
2 tools · 7 criteria
Troubleshooting
Fix GitLab CI "dial tcp: lookup docker" no such host error
The GitLab CI error "dial tcp lookup docker no such host" means the docker:dind service alias never resolved. Here is the fast fix and the real causes.
Warning · GitLab CI · dial tcp: lookup docker: no such host
Latest
View all → Tip
Validate Kubernetes Manifests with Flux Schema
Flux 2.9 shipped Flux Schema, a CLI plugin that checks your Kubernetes manifests against JSON Schema and CEL rules before they merge. Here is how to wire it up.
Flux Schema · gitops
Troubleshooting
Fix GitLab CI "dial tcp: lookup docker" no such host error
The GitLab CI error "dial tcp lookup docker no such host" means the docker:dind service alias never resolved. Here is the fast fix and the real causes.
Warning · GitLab CI · dial tcp: lookup docker: no such host
Troubleshooting
GitLab CI "Cannot connect to unix:///var/run/docker.sock"
The GitLab CI error Cannot connect to the Docker daemon at unix:///var/run/docker.sock means DOCKER_HOST is unset. Here is the fast fix.
Warning · GitLab CI · unix:///var/run/docker.sock
Troubleshooting
Fix Flux SOPS MAC mismatch in kustomize-controller
A Flux SOPS MAC mismatch means an encrypted file was changed outside sops. Diagnose it and re-encrypt cleanly so kustomize-controller can decrypt again.
Critical · flux · MAC mismatch
Troubleshooting
Fix vLLM CUDA OutOfMemoryError in Kubernetes
vLLM crashing with torch.cuda.OutOfMemoryError on Kubernetes? Tune gpu_memory_utilization, tensor_parallel_size, max_num_seqs, and max_model_len to fix it fast.
Critical · vLLM · torch.cuda.OutOfMemoryError
Blog
k8s-aibom: Automated AI BOM for Kubernetes Workloads
Google Cloud open-sourced k8s-aibom, a Kubernetes controller that builds CycloneDX ML-BOMs at runtime and surfaces the shadow AI already running in your clusters.
security · Jul 14, 2026 · 9 min read