DevOps
How to Create Users in Linux with useradd command?
The useradd command is one of the most fundamental tools for user management in Linux systems. It allows system administrators to create …
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eBPF
What Is eBPF, and Why Is It Important?
eBPF This blog breaks down "Learning eBPF" in simple terms, assuming you're completely new to programming and Linux concepts. Don't worry if …
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How to Build Nginx Smart Proxy Image with Multi-Domain Support
Prologue: The VisionIn the vast digital landscape where countless applications struggle to find their voice, where developers battle with manual configurations, and …
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A structured path from Linux basics to production-grade AI Cloud DevSecOps — follow it step by step.
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Linux & Networking Fundamentals
Master the CLI, shell scripting, user management, process control, and networking — DNS, TCP/IP, HTTP, and firewalls.
UbuntuCentOSBashSSHVimsystemdiptablesTCP/IPDNSNginx
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Programming & Scripting
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PythonGoBash / ShellYAMLJSONREST APIsBoto3Makefiles
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GitGitHubGitLabBitbucketGit FlowTrunk-Based DevPre-commit Hooks
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Cloud-native services — compute, storage, networking, IAM, and managed Kubernetes across major providers.
AWS (EC2, S3, IAM, VPC, EKS, Lambda)Azure (AKS, DevOps)GCP (GKE, Cloud Build)
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DockerDocker ComposePodmanBuildahECR / ACR / GCRDistroless
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Infrastructure as Code
Provision infrastructure declaratively. Reusable modules, state management, and config at scale.
TerraformAnsiblePulumiCloudFormationCrossplanePackerTerragrunt
07
CI/CD Pipelines
Automate build, test, deploy. Multi-stage pipelines, parallel jobs, caching, artifacts, and rollbacks.
JenkinsGitHub ActionsGitLab CI/CDAzure DevOpsCircleCITektonNexusSonarQube
08
Kubernetes & Orchestration
Pods, Services, Deployments, StatefulSets, RBAC, Ingress, Helm, and managed K8s clusters.
KuberneteskubectlHelmKustomizeEKS / AKS / GKEk3sMinikubeOperator SDK
09
Security & DevSecOps
Shift left — vulnerability scanning, secrets, policy enforcement, image signing, and compliance.
TrivySnykSonarQubeOWASP ZAPFalcoOPAVaultCosignCheckov
10
Monitoring & Observability
Metrics, logs, traces, dashboards, alerting, SLIs/SLOs, and incident response.
PrometheusGrafanaELK StackLokiJaegerOpenTelemetryDatadogPagerDuty
11
GitOps & Progressive Delivery
Git as the source of truth. Pull-based reconciliation, canary releases, blue-green, and feature flags.
ArgoCDFluxFlaggerArgo RolloutsSpinnakerKustomizeHelm
12
Service Mesh & Platform Engineering
Service-to-service communication, traffic routing, mTLS, and internal developer platforms.
IstioLinkerdEnvoyNginx IngressCert-ManagerBackstageKratix
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"The DevSecOps CI/CD tutorials are the most hands-on, practical guides I've found anywhere. Each step is clearly explained with real commands you can copy and run."
"The Kubernetes Masterclass series took me from zero to deploying production clusters on EKS. The day-by-day format made it easy to follow alongside work."
"I love how every project includes security scanning from the start — not as an afterthought. This is how real DevSecOps should be taught."
"Mr Cloud Book's YouTube channel combined with these blog posts created the perfect learning combo. Got my first DevOps job within 6 months of following along."
"The Terraform and Ansible posts saved me hours of debugging. Clear, concise, and production-tested. Bookmarked every single one."
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