API Deployment + NodePort Service

Deploy a local Docker image to Kubernetes with resource limits and NodePort access

📋Configuration Files

deployment.yml

Deployment with resource requests/limits and local image

yaml

1apiVersion: apps/v1
2kind: Deployment
3metadata:
4  labels:
5    app: api-deploy
6  name: api-deploy
7spec:
8  replicas: 1
9  selector:
10    matchLabels:
11      app: api-deploy
12  template:
13    metadata:
14      labels:
15        app: api-deploy
16    spec:
17      containers:
18        - image: api:local
19          name: api
20          imagePullPolicy: IfNotPresent
21          ports:
22            - containerPort: 3000
23          resources:
24            limits:
25              memory: "512Mi"
26              cpu: "500m"
27            requests:
28              memory: "256Mi"
29              cpu: "250m"

services.yml

NodePort Service exposing the API on port 32000

yaml

1apiVersion: v1
2kind: Service
3metadata:
4  labels:
5    app: api-deploy
6  name: api-deploy-service
7spec:
8  type: NodePort
9  selector:
10    app: api-deploy
11  ports:
12    - port: 3000
13      protocol: TCP
14      targetPort: 3000
15      nodePort: 32000

Deployment: minimal vs production

What to add before production merge

Aspect	Minimal	Production
Replicas	replicas: 1	replicas: 3+ with PodDisruptionBudget
Probes	none	readinessProbe + livenessProbe on /health
Resources	no limits	requests/limits for CPU and memory
Security	default SA	runAsNonRoot, readOnlyRootFilesystem, drop capabilities
Image	:latest	pinned digest or semver tag from CI
Secrets	env in Deployment YAML	Secret + external-secrets or SealedSecrets

📄

Step 01

Apply to Kubernetes

(01)Build image and load into cluster

Linux

1# Build local image
2docker build -t api:local .
3 
4# For Minikube / Kind — load image into cluster
5minikube image load api:local
6# OR: kind load docker-image api:local

(02)Apply manifests

Linux

1kubectl apply -f deployment.yml
2kubectl apply -f services.yml
3kubectl get pods,svc
4curl http://localhost:32000  # or minikube service api-deploy-service