Kubernetes 常用命令 CKA

POD

Create an NGINX Pod

kubectl run nginx --image=nginx

1	kubectl run nginx --image=nginx

Generate POD Manifest YAML file (-o yaml). Don’t create it(–dry-run)

kubectl run nginx --image=nginx  --dry-run=client -o yaml

1	kubectl run nginx --image=nginx --dry-run=client -o yaml

Create a deployment

kubectl create deployment --image=nginx nginx

1	kubectl create deployment --image=nginx nginx

Generate Deployment YAML file (-o yaml). Don’t create it(–dry-run)

kubectl create deployment --image=nginx nginx --dry-run=client -o yaml

1	kubectl create deployment --image=nginx nginx --dry-run=client -o yaml

Save it to a file – (If you need to modify or add some other details)

kubectl create deployment --image=nginx nginx --dry-run=client -o yaml > nginx-deployment.yaml

1	kubectl create deployment --image=nginx nginx --dry-run=client -o yaml > nginx-deployment.yaml

Create a Service named redis-service of type ClusterIP to expose pod redis on port 6379

kubectl expose pod redis --port=6379 --name redis-service --dry-run=client -o yaml

1	kubectl expose pod redis --port=6379 --name redis-service --dry-run=client -o yaml

kubectl create service clusterip redis --tcp=6379:6379 --dry-run=client -o yaml

1	kubectl create service clusterip redis --tcp=6379:6379 --dry-run=client -o yaml

Create a Service named nginx of type NodePort to expose pod nginx’s port 80 on port 30080 on the nodes:

kubectl expose pod nginx --port=80 --name nginx-service --type=NodePort --dry-run=client -o yaml

1	kubectl expose pod nginx --port=80 --name nginx-service --type=NodePort --dry-run=client -o yaml

kubectl create service nodeport nginx --tcp=80:80 --node-port=30080 --dry-run=client -o yaml

1	kubectl create service nodeport nginx --tcp=80:80 --node-port=30080 --dry-run=client -o yaml

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