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.idea
.idea
 
 
Command and Arguments
Command and Arguments
 
 
Deploy_APPLICATION
Deploy_APPLICATION
 
 
ETCD
ETCD
 
 
Encrypting secret data at Rest
Encrypting secret data at Rest
 
 
Environment Variables
Environment Variables
 
 
Multiple_Scheduler
Multiple_Scheduler
 
 
Resource_Limits
Resource_Limits
 
 
Roles and Cluster Roles
Roles and Cluster Roles
 
 
Storage
Storage
 
 
demo-3tier-observability-stack
demo-3tier-observability-stack
 
 
grafana-prometheus-stack
grafana-prometheus-stack
 
 
image Security
image Security
 
 
k8s-3tier-observability-demo
k8s-3tier-observability-demo
 
 
Kubernetes low-level knowledge.md
Kubernetes low-level knowledge.md
 
 
Kubernetes networking without a CNI plugin.md
Kubernetes networking without a CNI plugin.md
 
 
Nagios-deployment-on-cluster.yml
Nagios-deployment-on-cluster.yml
 
 
Pod → containers → cgroups → namespaces.md
Pod → containers → cgroups → namespaces.md
 
 
README.md
README.md
 
 
certificate_signing_request.yml
certificate_signing_request.yml
 
 
cluster upgrade kubernetes.md
cluster upgrade kubernetes.md
 
 
create_daemonSet.yaml
create_daemonSet.yaml
 
 
create_deployment_with_node_affinity_example1_definition.yaml
create_deployment_with_node_affinity_example1_definition.yaml
 
 
create_deployment_with_node_affinity_example2_definition.yaml
create_deployment_with_node_affinity_example2_definition.yaml
 
 
deploy-nginx-web server-in-cluster.yml
deploy-nginx-web server-in-cluster.yml
 
 
deployment.yml
deployment.yml
 
 
init_container.yaml
init_container.yaml
 
 
k8s-setup-using-kubeadm.md
k8s-setup-using-kubeadm.md
 
 
multiple cluster of kubernetes.md
multiple cluster of kubernetes.md
 
 
network_policy.yaml
network_policy.yaml
 
 
nginx_pod_definition.yaml
nginx_pod_definition.yaml
 
 
nodeport.yml
nodeport.yml
 
 
pod_with_security_context.yaml
pod_with_security_context.yaml
 
 
pod_with_security_context_and_capabilities.yaml
pod_with_security_context_and_capabilities.yaml
 
 
static_pod.yaml
static_pod.yaml
 
 

Repository files navigation

Kubernetes Projects & Manifests Repository

This repository contains a collection of Kubernetes manifests, configuration examples, and hands-on project files designed to help understand, practice, and implement core Kubernetes concepts. It serves as a reference for developers, DevOps engineers, platform engineers, and Kubernetes learners who want practical examples of real-world cluster operations.

📁 Repository Structure

🧩 Core Kubernetes Concepts

Topic Description
Command and Arguments Examples of defining container commands, args, and environment variables.
Environment Variables Creating and using environment variables & Kubernetes Secrets.
Resource Limits CPU/memory requests and limits for workloads.
Network Policy Sample network policy and security context manifests.
Static Pod Example of running static pods via Kubelet.
Init Containers Using init containers for pre-start tasks.
Node Affinity Examples Affinity/anti-affinity scheduling examples.
Pod Security Context & Capabilities Demonstrates Linux capabilities and pod-level security.

🔐 Security & Secrets

Topic Description
Encrypting Secret Data at Rest Instructions and examples for enabling encryption at rest.
Certificate Signing Request (CSR) CSR examples for cluster certificate management.
Image Security Using private image registries and imagePullSecrets.

⚙️ Cluster-Level Components

Topic Description
Multiple Scheduler Definitions and configuration for running additional Kubernetes schedulers.
ETCD ETCD manifests and examples.
Cluster Upgrade (kubeadm) Guides for upgrading Kubernetes clusters.
Multiple Cluster Setup Instructions for managing multiple clusters.

📦 Workload Deployments

Topic Description
Deployment Examples Nginx, multi-container pods, NodePort services, etc.
DaemonSets Example DaemonSet definitions.
3-Tier Demo Projects Example 3-tier application deployments.
Nagios Deployment Monitoring tool deployment for cluster health checks.

📊 Observability Stack

Topic Description
demo-3tier-observability-stack 3-tier app with observability integrated.
grafana-prometheus-stack Files to deploy monitoring using Prometheus & Grafana.
k8s-3tier-observability-demo Complete demo with dashboards and metrics.

📘 Kubernetes Documentation

For official Kubernetes docs: ➡️ https://kubernetes.io/docs/home/

🚀 How to Use This Repository

# Clone the repository
git clone https://github.com/<your-username>/kubernetes_projects.git
cd kubernetes_projects

# Apply any manifest
kubectl apply -f <manifest.yml>

# Delete a resource
kubectl delete -f <manifest.yml>

Each folder includes relevant YAML manifests and, where applicable, README notes explaining concepts and usage.

🧠 Upcoming Additional Topics

1️⃣ Ingress & Advanced Networking

  • Ingress resource examples
  • NGINX / Traefik ingress controller setup
  • TLS termination examples
  • LoadBalancer service integration

2️⃣ Persistent Storage (Advanced)

  • StatefulSets with PVC templates
  • Dynamic provisioning using StorageClasses
  • CSI driver examples (EBS, GCE PD, Azure Disk)

3️⃣ ConfigMaps + Secrets Best Practices

  • Mounted vs env
  • Secret encryption using KMS
  • ExternalSecret Operator examples

4️⃣ RBAC & Security

  • RBAC for service accounts
  • OPA Gatekeeper policies
  • Pod Security Admission (PSA) examples
  • Runtime security (Falco, Kyverno policies)

5️⃣ Autoscaling

  • HPA (CPU, Memory, Custom metrics)
  • VPA (Vertical Pod Autoscaler)
  • Cluster Autoscaler on cloud providers

6️⃣ Service Mesh

  • Istio demo installation
  • mTLS setup
  • Traffic shifting + canary deployments

7️⃣ GitOps

  • ArgoCD application definitions
  • Flux CD examples
  • CI/CD to Kubernetes GitOps workflow

8️⃣ Logging & Monitoring (Advanced)

  • Loki + Promtail setup
  • OpenTelemetry Collector
  • Custom Grafana dashboards

9️⃣ Helm Packaging

  • Convert several YAML examples into Helm charts
  • Chart structure + values.yaml customization

🔟 Kubernetes Operators

  • Simple Operator using Kubebuilder or Operator SDK
  • CRD examples

1️⃣1️⃣ KEDA (Event Driven Autoscaling)

  • Autoscaling based on Kafka, Prometheus, or HTTP triggers

1️⃣2️⃣ Backup & Disaster Recovery

  • Velero backup/restore setup
  • ETCD backup automation

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