A structured collection of Kubernetes manifests and Go application examples for learning distributed systems.

• Kubernetes Cluster: Minikube, Kind, K3s, or a cloud provider.
• kubectl: Kubernetes command-line tool.
• Go (Optional): For building the Go application locally.
• Docker (Optional): For building container images.

• Pods: Basic pod definitions (labeled, GPU, etc.).
• Cluster Setup: Namespace and initial cluster configuration.
• Concepts: Theoretical notes (e.g., Linux PSI, Standard Labels).

• ReplicaSets: Maintains a stable set of replica Pods.
• DaemonSets: Runs a copy of a Pod on all (or selected) Nodes.
• Jobs: Run-to-completion tasks.
• CronJobs: Scheduled time-based jobs.
• Replication Controllers: (Legacy) Predecessor to ReplicaSets.

• Services: Exposing applications (ClusterIP, NodePort, LoadBalancer).
• Ingresses: HTTP/HTTPS routing.
• Gateway API: Modern, flexible routing (Gateway, HTTPRoute).

• Storage: Persistent Volumes (PV), Claims (PVC), and StorageClasses.
• Configs: Configuration management using ConfigMaps and Secrets.

• Go App Demo: A production-ready Go application demonstrating Kubernetes best practices (Probes, Graceful Shutdown).

1. Deploy the Demo App:

   make deploy-app

2. Explore a Concept: Navigate to a directory and apply the manifests:

   cd jobs
   kubectl apply -f job.yaml