javascript - GKE 错误 : listen EACCES: permission denied on any port

Question

我正在尝试在 GKE 上启动我的 Express.js 应用程序，但是无论我指定哪个端口，我总是会收到如下错误:

Error: listen EACCES: permission denied tcp://10.3.253.94:3000
    at Server.setupListenHandle [as _listen2] (net.js:1296:21)
    at listenInCluster (net.js:1361:12)
    at Server.listen (net.js:1458:5)
    at Function.listen (/srv/node_modules/express/lib/application.js:618:24)
    at Object.<anonymous> (/srv/src/index.js:42:5)
    at Module._compile (internal/modules/cjs/loader.js:1137:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)
    at Module.load (internal/modules/cjs/loader.js:985:32)
    at Function.Module._load (internal/modules/cjs/loader.js:878:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)

我尝试了多个端口(8080、8000、3000)。我已将用户设置为 root在 Docker 镜像中。
这是我的设置:

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: api
  name: api
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: api
  template:
    metadata:
      labels:
        app: api
    spec:
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      containers:
        - image: gcr.io/ellioseven-kbp/journal-api:1.0.14
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
          name: api

apiVersion: v1
kind: Service
metadata:
  labels:
    app: api
  name: api
  namespace: default
spec:
  ports:
    - port: 3000
      protocol: TCP
      targetPort: 3000
  selector:
    app: api
  type: NodePort

FROM node:12-alpine
ENV PATH /srv/node_modules/.bin:$PATH
ENV API_PORT 3000
ENV REDIS_HOST redis
COPY . /srv
WORKDIR /srv
ENV PATH /srv/node_modules/.bin:$PATH
RUN yarn install
CMD yarn start
EXPOSE 3000
USER root

const port = process.env.API_PORT || 3000
app.listen(port, () => console.log("Listening on " + port))

我在试图解决这个问题时完全不知所措，任何帮助将不胜感激。

Answer 1

看起来它不能只绑定(bind)到 3000港口。它可以是以下任何一种:

不绑定(bind)到 0.0.0.0 .你可以试试:

app.listen('3000','0.0.0.0',()=>{
    console.log("server is listening on 3000 port");
})

您在容器中以非特权用户身份运行。看看您是否可以启动一个测试 pod 并在它启动后运行该命令。

  apiVersion: apps/v1
  kind: Deployment
  metadata:
    labels:
      app: api
    name: api
    namespace: default
  spec:
    replicas: 1
    selector:
      matchLabels:
        app: api
    template:
      metadata:
        labels:
          app: api
      spec:
        dnsPolicy: ClusterFirst
        restartPolicy: Always
        containers:
          - image: gcr.io/ellioseven-kbp/journal-api:1.0.14
            imagePullPolicy: IfNotPresent
            command: [ "/bin/bash", "-c", "--" ] 👈
            args: [ "while true; do sleep 30; done;" ] 👈
            ports:
              - containerPort: 3000
            name: api

然后你可以连接到 pod 并尝试启动你的应用程序

kubectl exec -it <pod-name> bash

✌️