20201208 kubernetes (二)

課堂資料

[Kubernetes] Cluster Architecture小信豬的原始部落

https://zhuanlan.zhihu.com/p/109965813zhuanlan.zhihu.com

https://www.oneops.co/2019/06/15/kubernetes-install-binary.htmlwww.oneops.co

kubernets nodeport 无法访问_nodeport 在非部署节点 访问不到-CSDN博客blog.csdn.net

https://blog.51cto.com/11288550/2378289blog.51cto.com

http://pangguoming.com/blog/architecture/kubernetes-nodeports-denial-of-accesspangguoming.com

課堂練習

vm1

kube部屬應用

kubectl create deployment myweb --image=httpd

kubectl expose deployment myweb --type="NodePort" --port=80

kubectl get svc

Scale 應用

kubectl scale deployment myweb --replicas 3

kubectl get deployment

kubectl scale deployment myweb --replicas 2

kubectl get deployment

docker images | grep httpd

滾動更新

kubectl create deployment myweb2 --image=httpd:2.4.43

kubectl get deployment

kubectl get pod

kubectl describe pod [Name]

kubectl set image deployment myweb2 httpd=httpd:2.4.46

kubectl get pod

kubectl get deployment myweb2 -o yaml | grep name

kubectl set image deployment myweb2 httpd=httpd:2.4.46

kubectl get pod

kubectl describe pod [Name]

kubectl rollout undo deployment myweb2

kubectl get pod

kubectl describe pod [Name]

kubectl delete pod [Name]

kubectl get pod -o wide

nodeport cluster

kubectl get ns

• ns：namespace

kubectl get pod

kubectl get pod -n kube-system

kubectl create ns myns

kubectl get ns

kubectl create deployment myweb3 --image=httpd -n=myns

kubectl get ns

kubectl get pod

kubectl get deployment -n default

kubectl get deployment -n myns

kubectl get deployment --all-namespaces

kubectl get pod -n default

kubectl get pod -n myns

kubectl get pod --all-namespace

安裝 kubelet、kubeadm、kubectl

kubectl get pod -o wide

kubectl exec [Name] date

kubectl exec [Name] -it -- bash

apt install net-tools

exit

kubectl get pods

kubectl describe pod [Name]

kubectl exec [Name] date

kubectl exec [Name] echo "hi"

kubectl exec [Name] -it bash

kubectl describe svc myweb

vm2

vm3