📦 Kubernetes YAML Examples

This repository contains a comprehensive set of Kubernetes YAML manifests for learning and practicing different Kubernetes concepts. Each file demonstrates a specific Kubernetes resource or configuration, making it a handy reference for both beginners and advanced users.

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📂 Repository Structure

🔹 Core Workloads

• podspec.yaml, devpod.yaml, expod.yaml – Basic Pod specifications
• dep.yaml, nginx-deployment.yaml – Deployments
• rc.yaml, repc.yaml – ReplicationController examples
• replicasetpod.yaml, replicasetmatchlabel.yaml, matchexpressionset.yaml – ReplicaSet demos

🔹 Services & Networking

• svc.yaml, nginx-service.yaml – ClusterIP services
• Nodeport.yaml, lb.yaml – NodePort & LoadBalancer services
• headless.yaml – Headless service
• svcwithoutsel.yaml, ep.yaml – Endpoint service
• ingressdeploy.yaml – Ingress with deployment

🔹 Storage

• pv.yaml, pvc.yaml, pvpod.yaml – PersistentVolume, PersistentVolumeClaim, and pod usage
• emptydirpod.yaml – Using emptyDir
• resource-pod.yaml, rquota.yaml – Resource requests, limits & quotas

🔹 Configs & Secrets

• cm.yaml, cm-pod.yaml – ConfigMaps
• sec.yaml, secenvpod.yaml, secvolpod.yaml – Secrets (env & volume usage)

🔹 Probes

• livenessprobe.yaml – Liveness probe
• readinessprobe.yaml – Readiness probe
• startupprobe.yaml – Startup probe

🔹 Scheduling

• nodeselector.yaml, nodeaffinity.yaml – Node selection & affinity
• podaff.yaml, podaffnity.yaml, podantiaff.yaml, podantiaffinity.yaml – Pod affinity & anti-affinity
• with-affinity-antiaffinity.yaml – Combined scheduling rules
• toleration.yaml – Tolerations for taints

🔹 RBAC & Security

• role.yaml, rolebind.yaml – Role & RoleBinding
• clusrole.yaml, clusbinding.yaml – ClusterRole & ClusterRoleBinding
• ru.yaml, sf.yaml, mb-config.yaml – Security-related configs

🔹 Miscellaneous

• components.yaml – Multi-component manifest
• ns.yaml – Namespace definition
• metrics.yaml – Metrics-related resource
• multicont.yaml – Multi-container pod
• lrange.yaml – Label range selector demo

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🚀 How to Apply

1. Clone the repository:

   git clone https://github.com/<your-org>/<your-repo>.git
   cd <your-repo>

2. Apply any manifest to your Kubernetes cluster:

   kubectl apply -f dep.yaml
   kubectl get pods

3. Clean up:

   kubectl delete -f dep.yaml

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🎯 Learning Outcomes

By using this repository, you will learn:

• How to deploy applications with Pods, Deployments, and ReplicaSets
• Exposing apps via ClusterIP, NodePort, LoadBalancer, and Ingress
• Managing storage with Persistent Volumes, PVCs, and EmptyDir
• Configuring ConfigMaps and Secrets securely
• Implementing Probes for health checks
• Applying scheduling techniques (nodeSelector, affinity, tolerations)
• Setting up RBAC for access control

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📌 Next Steps

• Add Helm charts for templated deployments
• Provide real-world multi-tier app examples
• Integrate with CI/CD pipelines (ArgoCD, Flux, Jenkins)

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