Kubernetes Ingress with NGINX and TLS (cert-manager) Explained
Expose Kubernetes apps with an NGINX Ingress controller: install, host and path routing, TLS via cert-manager, annotations and…
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Ansible Roles Tutorial: Structure, Templates and Reuse
Organise Ansible playbooks into reusable roles: directory layout, tasks, templates, handlers, defaults, testing and requirements.yml.
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Ansible Vault: Encrypting Secrets in Playbooks (Complete Guide)
Encrypt secrets in Ansible with Vault: create and edit vault files, encrypt single variables inline, and run playbooks…
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OpenTelemetry Basics: Distributed Tracing for Linux Services (Complete Guide)
Set up OpenTelemetry for distributed tracing: instrument a service, run the Collector, and send traces to Jaeger alongside…
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Kubernetes Storage: PersistentVolumes and PersistentVolumeClaims Explained
Understand Kubernetes storage: PersistentVolumes, PersistentVolumeClaims, StorageClasses for dynamic provisioning, and what happens to data when a pod restarts.
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Helm Basics: Packaging and Deploying Kubernetes Applications (Complete Guide)
Learn Helm, the Kubernetes package manager: chart structure, values overrides, installing and upgrading releases, and rolling back a…
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Building an End-to-End DevSecOps Pipeline (Trivy + Gitleaks + tfsec + SBOM)
Combine gitleaks, tfsec, Trivy, and SBOM generation into one CI/CD pipeline with ArgoCD deployment — a complete reference…
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Kubernetes NetworkPolicy: Restricting Pod-to-Pod Traffic (Complete Guide)
Lock down Kubernetes pod-to-pod traffic with NetworkPolicy: default-deny, allow specific traffic by label, namespace isolation, and testing policies…
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SSH Certificate-Based Authentication for Infrastructure Access (Complete Guide)
Replace static SSH keys with short-lived certificates: set up a signing CA, sign user keys, configure sshd trust,…
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Software Supply Chain Security: SBOMs with Syft and Grype (Complete Guide)
Generate SBOMs with Syft and scan them for vulnerabilities with Grype: build supply chain visibility so you can…
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