Learn Kubernetes - 1 Code Examples & CST Typing Practice Test

Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications across clusters of machines.

View all 1 Kubernetes code examples →

Kubernetes Deployment with Service

Learn KUBERNETES with Real Code Examples

Updated Nov 27, 2025

Introduction & Fundamentals Setup & Configuration Architecture & Deep Internals Performance & Security Development Workflow Learning & Career Growth Business & Strategy Examples

Code Sample Descriptions

Kubernetes Deployment with Service

# Namespace
apiVersion: v1
kind: Namespace
metadata:
    name: my-app
    labels:
        name: my-app

---
# ConfigMap for application configuration
apiVersion: v1
kind: ConfigMap
metadata:
    name: app-config
    namespace: my-app
data:
    DATABASE_HOST: "postgres-service"
    DATABASE_PORT: "5432"
    REDIS_HOST: "redis-service"
    REDIS_PORT: "6379"

---
# Secret for sensitive data
apiVersion: v1
kind: Secret
metadata:
    name: app-secrets
    namespace: my-app
type: Opaque
data:
    DATABASE_PASSWORD: cGFzc3dvcmQxMjM=  # base64 encoded
    API_KEY: YWJjZGVmZ2hpams=

---
# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
    name: my-app-deployment
    namespace: my-app
    labels:
        app: my-app
spec:
    replicas: 3
    selector:
        matchLabels:
        app: my-app
    template:
        metadata:
        labels:
        app: my-app
        spec:
        containers:
        - name: my-app
        image: my-app:latest
        ports:
        - containerPort: 3000
        env:
        - name: DATABASE_HOST
        valueFrom:
        configMapKeyRef:
        name: app-config
        key: DATABASE_HOST
        - name: DATABASE_PASSWORD
        valueFrom:
        secretKeyRef:
        name: app-secrets
        key: DATABASE_PASSWORD
        resources:
        requests:
        memory: "256Mi"
        cpu: "200m"
        limits:
        memory: "512Mi"
        cpu: "500m"
        livenessProbe:
        httpGet:
        path: /health
        port: 3000
        initialDelaySeconds: 30
        periodSeconds: 10
        readinessProbe:
        httpGet:
        path: /ready
        port: 3000
        initialDelaySeconds: 5
        periodSeconds: 5

---
# Service
apiVersion: v1
kind: Service
metadata:
    name: my-app-service
    namespace: my-app
spec:
    selector:
        app: my-app
    ports:
    - protocol: TCP
        port: 80
        targetPort: 3000
    type: LoadBalancer

---
# Horizontal Pod Autoscaler
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
    name: my-app-hpa
    namespace: my-app
spec:
    scaleTargetRef:
        apiVersion: apps/v1
        kind: Deployment
        name: my-app-deployment
    minReplicas: 2
    maxReplicas: 10
    metrics:
    - type: Resource
        resource:
        name: cpu
        target:
        type: Utilization
        averageUtilization: 70
    - type: Resource
        resource:
        name: memory
        target:
        type: Utilization
        averageUtilization: 80

Demonstrates complete Kubernetes application deployment with configuration, secrets, services, and auto-scaling.

Let’s Try →

Frequently Asked Questions about Kubernetes

What is Kubernetes?

Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications across clusters of machines.

What are the primary use cases for Kubernetes?

Orchestrating containerized applications. Automating deployment, scaling, and rollback. Managing microservices architectures. Providing service discovery and load balancing. Running hybrid or multi-cloud workloads

What are the strengths of Kubernetes?

Highly scalable and resilient. Cloud-agnostic and portable. Strong ecosystem with tooling and extensions. Declarative and automated operations. Active community and enterprise support

What are the limitations of Kubernetes?

Steep learning curve for beginners. Operational complexity at scale. Debugging issues can be challenging. Resource-intensive compared to lightweight orchestrators. Requires good understanding of networking and storage concepts

How can I practice Kubernetes typing speed?

CodeSpeedTest offers 1+ real Kubernetes code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

Learn Other Programming Languages

C React Python C++Rust TypeScript Kotlin PHP Java C#Ruby Mql Cql N1ql Cypher Gremlin Partiql Haskell Elixir Fsharp View all languages →

Code Sample Descriptions

Kubernetes Deployment with Service

# Namespace
apiVersion: v1
kind: Namespace
metadata:
    name: my-app
    labels:
        name: my-app

---
# ConfigMap for application configuration
apiVersion: v1
kind: ConfigMap
metadata:
    name: app-config
    namespace: my-app
data:
    DATABASE_HOST: "postgres-service"
    DATABASE_PORT: "5432"
    REDIS_HOST: "redis-service"
    REDIS_PORT: "6379"

---
# Secret for sensitive data
apiVersion: v1
kind: Secret
metadata:
    name: app-secrets
    namespace: my-app
type: Opaque
data:
    DATABASE_PASSWORD: cGFzc3dvcmQxMjM=  # base64 encoded
    API_KEY: YWJjZGVmZ2hpams=

---
# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
    name: my-app-deployment
    namespace: my-app
    labels:
        app: my-app
spec:
    replicas: 3
    selector:
        matchLabels:
        app: my-app
    template:
        metadata:
        labels:
        app: my-app
        spec:
        containers:
        - name: my-app
        image: my-app:latest
        ports:
        - containerPort: 3000
        env:
        - name: DATABASE_HOST
        valueFrom:
        configMapKeyRef:
        name: app-config
        key: DATABASE_HOST
        - name: DATABASE_PASSWORD
        valueFrom:
        secretKeyRef:
        name: app-secrets
        key: DATABASE_PASSWORD
        resources:
        requests:
        memory: "256Mi"
        cpu: "200m"
        limits:
        memory: "512Mi"
        cpu: "500m"
        livenessProbe:
        httpGet:
        path: /health
        port: 3000
        initialDelaySeconds: 30
        periodSeconds: 10
        readinessProbe:
        httpGet:
        path: /ready
        port: 3000
        initialDelaySeconds: 5
        periodSeconds: 5

---
# Service
apiVersion: v1
kind: Service
metadata:
    name: my-app-service
    namespace: my-app
spec:
    selector:
        app: my-app
    ports:
    - protocol: TCP
        port: 80
        targetPort: 3000
    type: LoadBalancer

---
# Horizontal Pod Autoscaler
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
    name: my-app-hpa
    namespace: my-app
spec:
    scaleTargetRef:
        apiVersion: apps/v1
        kind: Deployment
        name: my-app-deployment
    minReplicas: 2
    maxReplicas: 10
    metrics:
    - type: Resource
        resource:
        name: cpu
        target:
        type: Utilization
        averageUtilization: 70
    - type: Resource
        resource:
        name: memory
        target:
        type: Utilization
        averageUtilization: 80

Demonstrates complete Kubernetes application deployment with configuration, secrets, services, and auto-scaling.

Let’s Try →

Frequently Asked Questions about Kubernetes

What is Kubernetes?

Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications across clusters of machines.

What are the primary use cases for Kubernetes?

What are the strengths of Kubernetes?

Highly scalable and resilient. Cloud-agnostic and portable. Strong ecosystem with tooling and extensions. Declarative and automated operations. Active community and enterprise support

What are the limitations of Kubernetes?

How can I practice Kubernetes typing speed?

CodeSpeedTest offers 1+ real Kubernetes code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.