docker+k8s

kubectl version

https://hub.docker.com/

node server.js

1. Create a file Dockerfile command in the project directory

FROM node:8.11.2

WORKDIR app

COPY . .

EXPOSE 8081

ENTRYPOINT [ "node","server.js" ]

2.docker build -t yinwensheng / kube-node-demo:. V1 strokes wrapped 镜像 

docker build -f /path/to/a/Dockerfile .

3.docker login --username yinwensheng 登录 do

 

4.docker push yinwensheng / kube-node-demo: v1 above 传镜 image

 

5.yaml deployment to deploy the application to k8s

Create a file called deployment.yaml of yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kube-node
spec:
replicas: 2
template:
metadata:
labels:
app: web
spec:
containers:
- name: kube-node-demo-instance
image: yinwensheng/kube-node-demo1:v1
ports:
- containerPort: 8081

 

6. Do kubectl create -f deployment.yaml command

7.kubectl get pods query service status 

8. Pod can view specific information: kubectl describe pods/kube-node-59bf664cbf-2qzgd

9. Reference Kubernetes pull configuration secret private warehouse mirroring official documents

kubectl create secret docker-registry myregistrykey 

--docker-server=https://index.docker.io/v1/
--docker-username=yinwensheng
--docker-password=xxxx

[email protected]

10.kubectl get secrets

So we created a secret, then the secret yaml added to the file, deployment.yaml modified file as follows:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kube-node
spec:
replicas: 2
template:
metadata:
labels:
app: web
spec:
containers:
- name: kube-node-demo-instance
image: yinwensheng/kube-node-demo1:v1
ports:
- containerPort: 8081
imagePullSecrets:
- name: myregistrykey

11.kubectl delete deployments / kube-Require

12.kubectl create -f deployment.yaml

13.kubectl get pods -o wide

14.curl 10.244.2.66:8081

15.kubectl get services /kubectl get svc nginx/

kubectl get svc nginx

curl <insert-cluster-ip-here>

 

You can view a list of running Pod and services.

kubectl get pods

kubectl get svc

kubectl cluster-info # get cluster information

 

# List namespace of all services

$ kubectl get services

# List namespace of all Pod, and provide detailed information

$ kubectl get pods -o wide

# List all namespace of all Pod

$ kubectl get pods --all-namespaces

# List specific copy controller

$ kubectl get rc <rc-name>

# List all pod with the tag env = production of

$ kubectl get pods -l env=production

 

yaml create a service exposed outside service