nodejs kubernetes无法执行滚动更新

Question

为了在生产中部署express Node.js api，我希望使用kubernetes，以下步骤如下：

• 在google cloud中创建集群
• 从git将代码克隆到集群
• Docker build-t gcr.io/[GCLOUDID]/app:v1。
• Docker pushgcr.io/[GCLOUDID]/app:v1
• Kubectl运行app--image=gcr.io/[GCLOUDID]/app:v1

使用了此dockerfile：

FROM node:11-alpine

WORKDIR /

COPY . /
RUN rm -rf node_modules
RUN rm -rf package-lock.json

RUN apk update && apk upgrade \
   && apk add --no-cache git \
   && apk --no-cache add --virtual builds-deps build-base python \
   && npm rebuild bcrypt --build-from-source

# Install imagemagick with support to native library
RUN apk add --no-cache file
RUN apk --update add imagemagick

RUN npm install 

ENV TYPE=docker

EXPOSE 80

CMD [ "npm", "start" ]

Answer 1

通过构建将容器嵌入到部署中的yaml来使用kubernetes声明性语法。这样更干净，会让你有条理。无论何时需要更新，只需更改映像名称并运行kubectl apply-f deployment.yaml即可。您不仅会更新图像，而且还会以蓝绿色的方式进行。查看此示例https://kubernetes.io/docs/concepts/workloads/controllers/deployment/

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.7.9
        ports:
        - containerPort: 80