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Tutorials, guides, and insights on DevOps, SRE, and Cloud technologies.
Advanced Linux Networking — VLANs, Bridges, and Network Namespaces
Deep dive into advanced Linux networking primitives — veth pairs, bridges, network namespaces, VLANs, bonding, and traffic control. These are the building blocks of Kubernetes and Docker networking.
Terraform Multi-Environment — Terragrunt, Workspaces, or Directory Structure?
Compare the three major approaches to managing multiple Terraform environments — workspaces, directory structure, and Terragrunt — with a comparison table, real examples, and guidance on when to use each.
AWS Security — GuardDuty, Security Hub, and Config Rules
Master AWS security services including GuardDuty for threat detection, Security Hub for compliance standards (CIS, PCI DSS), AWS Config for resource compliance, and Inspector for vulnerability scanning. Learn to enable, configure, and auto-remediate security findings.
Azure Site Recovery — DR Strategy for Production Workloads
Build a production-grade disaster recovery strategy with Azure Site Recovery — configure VM replication, set up recovery plans with runbooks, perform test and planned failovers, compare Azure Backup vs ASR, implement SQL Always On, and use Traffic Manager for DNS failover.
Infrastructure Testing — Terratest, InSpec, and ServerSpec
Learn how to test your infrastructure code with Terratest for end-to-end testing, InSpec for compliance validation, and ServerSpec for server configuration verification.
Monitor Docker Containers — cAdvisor, Prometheus, and Grafana
Set up a complete Docker monitoring stack with cAdvisor, Prometheus, and Grafana — track container CPU, memory, network I/O, and disk usage with dashboards, alerts, and production-ready docker-compose configurations.
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