Master Systems Step by Step.
Step-by-step interactive curricula designed for production engineers. Learn operating systems, container internals, and Kubernetes architecture through guided multi-chapter labs with live automated validation.
Linux Operating System Fundamentals (101)
Filesystem hierarchy, user permissions, process control & networking
Master Linux system administration from first principles across 16 hands-on chapters: navigate filesystem trees, modify POSIX permissions and ACLs, manage daemon processes with systemd, parse logs with awk/sed/grep, and diagnose network interfaces in live ephemeral containers.
Docker & Container Architecture (101)
Unix domain sockets, bridge networking, lifecycle & volume traps
Understand container runtimes and developer workflows without magic: interact directly with the Docker Engine over Unix domain sockets (/var/run/docker.sock), configure user-defined bridge networks with automatic container DNS, manage signals for clean PID 1 shutdowns, and mount named persistent volumes safely.
Docker Developer: Multi-Stage Builds & Compose (201)
Layer caching, multi-stage minimal builds, Compose networks & startup healthcheck gates
Master container optimization and local orchestration: eliminate layer cache invalidation pitfalls, compile minimal Go/Node binaries in multi-stage builds (<25MB), orchestrate multi-container microservices with custom bridge networks, and eliminate startup race conditions using healthcheck gates.
Docker Platform Engineer: Kernel Namespaces & Hardening (301)
Kernel namespaces, cgroups v2 resource ceilings, OCI runc & Seccomp hardening
Master the Linux kernel primitives and runtime security architectures powering modern containers: isolate processes manually with kernel namespaces (PID, Net, Mount), clamp CPU/memory limits in cgroups v2, execute OCI bundles with runc, and lock down container syscalls with Seccomp and Linux Capabilities.
Kubernetes Core Concepts & Workloads (101)
Pods, ReplicaSets, Deployments, ConfigMaps, Secrets & Services
Build a rock-solid mental model of Kubernetes primitives from first principles: author Pod manifests with multi-container sidecars, declare declarative Deployments with zero-downtime rolling updates, inject configuration via ConfigMaps and base64 Secrets, and route cluster traffic via ClusterIP Services.
Kubernetes Production Troubleshooting (101)
CrashLoopBackOff, ImagePullBackOff, missing Endpoints & RBAC 403s
Diagnose and remediate 8 real production Kubernetes outages on a live k3s cluster: triage CrashLoopBackOff container exits, fix ImagePullBackOff registry credential errors, resolve missing Service Endpoints, repair Ingress path routing, unfreeze stuck rollouts, and grant missing RBAC role permissions.
Kubernetes Operational Fundamentals (201)
Health probes, NGINX Ingress, HPA autoscaling, PVCs & RBAC least privilege
Operate production-grade Kubernetes workloads with high reliability: configure startup, liveness, and readiness probes with proper initialDelaySeconds, route SSL traffic via NGINX Ingress, autoscale pod replicas dynamically with HPA based on CPU/Memory load, and persist storage with PVCs.
Kubernetes Advanced Core & Internals (301)
Control plane components, etcd snapshots, NetworkPolicies & CRD operators
Master Kubernetes control plane internals and platform engineering: inspect the kube-apiserver flow, perform etcdctl disaster recovery snapshot restores, enforce zero-trust pod NetworkPolicies, configure admission controllers, and author custom CustomResourceDefinitions (CRDs).
How VibeInfra Guided Courses Work
Each course chapter provides an isolated ephemeral Linux or Kubernetes container with real terminal interaction.
Concept Briefing
Clear first-principles architecture explanation without unnecessary fluff or trivia.
Live Shell Terminal
Execute real bash/kubectl commands in a disposable ephemeral Linux container environment.
Automated Grader
Programmatic validation scripts test filesystem state, sockets, and cluster objects in real-time.
XP & Skill Ladder
Earn platform XP and progress up the SRE On-Call Mastery Ladder dynamically.
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