#Kubernetes Basics

1# Configure cluster access
2kubectl config get-contexts
3kubectl config use-context mycluster
4
5# Get resources
6kubectl get pods
7kubectl get deployments
8kubectl get services
9kubectl get all
10
11# Describe resource
12kubectl describe pod mypod
13
14# Logs
15kubectl logs mypod
16kubectl logs -f mypod
17
18# Execute command
19kubectl exec -it mypod -- bash
20
21# Apply configuration
22kubectl apply -f deployment.yaml
23
24# Delete resource
25kubectl delete -f deployment.yaml
26kubectl delete pod mypod

1# deployment.yaml
2apiVersion: apps/v1
3kind: Deployment
4metadata:
5  name: myapp
6spec:
7  replicas: 3
8  selector:
9    matchLabels:
10      app: myapp
11  template:
12    metadata:
13      labels:
14        app: myapp
15    spec:
16      containers:
17      - name: myapp
18        image: nginx:1.25
19        ports:
20        - containerPort: 80
21        resources:
22          limits:
23            memory: "128Mi"
24            cpu: "500m"
25---
26apiVersion: v1
27kind: Service
28metadata:
29  name: myapp-service
30spec:
31  selector:
32    app: myapp
33  ports:
34  - port: 80
35    targetPort: 80
36  type: LoadBalancer

1# minikube
2minikube start
3minikube dashboard
4
5# kind (Kubernetes in Docker)
6kind create cluster
7
8# k3d (k3s in Docker)
9k3d cluster create mycluster