LoadBalancer Service

Expose app with LoadBalancer — cloud LB or MetalLB on bare metal

📋Configuration Files

deployment.yml

yaml

1apiVersion: apps/v1
2kind: Deployment
3metadata:
4  name: web
5spec:
6  replicas: 3
7  selector:
8    matchLabels:
9      app: web
10  template:
11    metadata:
12      labels:
13        app: web
14    spec:
15      containers:
16        - name: nginx
17          image: nginx:alpine
18          ports:
19            - containerPort: 80

service-loadbalancer.yml

LoadBalancer assigns external IP (cloud) or MetalLB IP

yaml

1apiVersion: v1
2kind: Service
3metadata:
4  name: web-lb
5spec:
6  type: LoadBalancer
7  selector:
8    app: web
9  ports:
10    - port: 80
11      targetPort: 80
12      protocol: TCP

📄

Step 01

Apply LoadBalancer

(01)Deploy to cluster

Linux

1kubectl apply -f .
2kubectl get all
3kubectl get pods -w

(02)Remove

Linux

1kubectl delete -f .