Question

我使用 node 创建了一个 REST API，并使用 Kubernetes 和 Docker 将它容器化。出于开发目的，kubernetes pod 在 minikube 环境中运行。

应用程序运行良好，现在出现以下错误。

[distribution] Initial Distribution API Database connection error occured - MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
[distribution]     at NativeConnection.Connection.openUri (/app/node_modules/mongoose/lib/connection.js:830:32)
[distribution]     at Mongoose.connect (/app/node_modules/mongoose/lib/index.js:335:15)
[distribution]     at /app/src/index.ts:60:8
[distribution]     at step (/app/src/index.ts:34:23)
[distribution]     at Object.next (/app/src/index.ts:15:53)
[distribution]     at fulfilled (/app/src/index.ts:6:58)
[distribution]     at processTicksAndRejections (node:internal/process/task_queues:93:5) {
[distribution]   reason: TopologyDescription {
[distribution]     type: 'ReplicaSetNoPrimary',
[distribution]     setName: null,
[distribution]     maxSetVersion: null,
[distribution]     maxElectionId: null,
[distribution]     servers: Map(3) {
[distribution]       'cluster0-shard-00-00.psdty.mongodb.net:27017' => [ServerDescription],
[distribution]       'cluster0-shard-00-01.psdty.mongodb.net:27017' => [ServerDescription],
[distribution]       'cluster0-shard-00-02.psdty.mongodb.net:27017' => [ServerDescription]
[distribution]     },
[distribution]     stale: false,
[distribution]     compatible: true,
[distribution]     compatibilityError: null,
[distribution]     logicalSessionTimeoutMinutes: null,
[distribution]     heartbeatFrequencyMS: 10000,
[distribution]     localThresholdMS: 15,
[distribution]     commonWireVersion: null
[distribution]   }
[distribution] }

该问题似乎是 MongoDB 连接 URL/访问问题，但连接字符串是正确的。（使用 MongoDB Cloud 支持进行了双重检查）。给每个人相关的网络访问权限

我还可以确认可以使用相同的连接 URL 通过 MongoDB Compass 访问 MongoCloudDB

我的猜测是无法从 minikube 内的 pod 与 MongoDB 数据库建立连接。

你们有没有人知道如何克服这个问题？？

pod 和外部服务的 kubernetes 配置

apiVersion: apps/v1
kind: Deployment
metadata:
  name: distribution-depl
spec:
  replicas: 1
  selector:
    matchLabels:
      app: distribution
  template:
    metadata:
      labels:
        app: distribution
    spec:
      containers:
        - name: distribution
          image: ssomlk/distribution
          env:
            - name: MONGO_URI
              value: 'mongodb://ssomlk:<password>@cluster0-shard-00-00.yeu7t.mongodb.net:27017,cluster0-shard-00-01.yeu7t.mongodb.net:27017,cluster0-shard-00-02.yeu7t.mongodb.net:27017/<db_name>?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority'
            - name: JWT_ACCESS_TOKEN_KEY
              valueFrom:
                secretKeyRef:
                  name: jwt-secret
                  key: JWT_ACCESS_TOKEN_KEY
            - name: JWT_REFRESH_TOKEN_KEY
              valueFrom:
                secretKeyRef:
                  name: jwt-secret
                  key: JWT_REFRESH_TOKEN_KEY
            - name: JWT_ACCESS_TOKEN_EXPIRES_IN
              value: '15m'
            - name: JWT_REFRESH_TOKEN_EXPIRES_IN
              value: '60m'
            - name: NATS_CLIENT_ID
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: NATS_URL
              value: 'http://nats-srv:4222'
            - name: NATS_CLUSTER_ID
              value: nats-distribution-mailing
            - name: MAIL_USER
              valueFrom:
                secretKeyRef:
                  name: mail-secret
                  key: MAIL_USER
            - name: MAIL_PWD
              valueFrom:
                secretKeyRef:
                  name: mail-secret
                  key: MAIL_PWD
            - name: POOL_SIZE
              value: '8'
---
apiVersion: v1
kind: Service
metadata:
  name: distribution-srv
spec:
  type: ClusterIP
  selector:
    app: distribution
  ports:
    - name: distribution
      protocol: TCP
      port: 3000
      targetPort: 3000

使用尝试实施 ExternalService 时收到的错误进行编辑

服务“distribution-database-srv”无效：

spec.externalName: 无效值："mongodb://ssomlk:@cluster0-shard-00-00.y8kuj.mongodb.net:27017,cluster0-shard-00-01.y8kuj.mongodb.net:27017, cluster0-shard-00-02.y8kuj.mongodb.net:27017/?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority”：不得超过253个字符
spec.externalName: 无效值："mongodb://ssomlk:@cluster0-shard-00-00.y8kuj.mongodb.net:27017,cluster0-shard-00-01.y8kuj.mongodb.net:27017, cluster0-shard-00-02.y8kuj.mongodb.net:27017/?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority”：小写的 RFC 1123 子域必须由小写字母数字组成字符，“-”或“.”，并且必须以字母数字字符开头和结尾（例如“example.com”，用于验证的正则表达式为“a-z0-9?(.a-z0-9?)*” )

有什么想法吗？？

Answer 1

在您的配置中，mongdb uri 无法从集群内部解析，您必须创建一个外部服务以使 uri 可解析。请参阅下面的配置作为示例。

kind: Deployment
metadata:
  name: distribution-depl
spec:
  replicas: 1
  selector:
    matchLabels:
      app: distribution
  template:
    metadata:
      labels:
        app: distribution
    spec:
      containers:
        - name: distribution
          image: ssomlk/distribution
          env:
            - name: MONGO_URI
              value: my-service
            - name: JWT_ACCESS_TOKEN_KEY
              valueFrom:
                secretKeyRef:
                  name: jwt-secret
                  key: JWT_ACCESS_TOKEN_KEY
            - name: JWT_REFRESH_TOKEN_KEY
              valueFrom:
                secretKeyRef:
                  name: jwt-secret
                  key: JWT_REFRESH_TOKEN_KEY
            - name: JWT_ACCESS_TOKEN_EXPIRES_IN
              value: '15m'
            - name: JWT_REFRESH_TOKEN_EXPIRES_IN
              value: '60m'
            - name: NATS_CLIENT_ID
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: NATS_URL
              value: 'http://nats-srv:4222'
            - name: NATS_CLUSTER_ID
              value: nats-distribution-mailing
            - name: MAIL_USER
              valueFrom:
                secretKeyRef:
                  name: mail-secret
                  key: MAIL_USER
            - name: MAIL_PWD
              valueFrom:
                secretKeyRef:
                  name: mail-secret
                  key: MAIL_PWD
            - name: POOL_SIZE
              value: '8'
---
apiVersion: v1
kind: Service
metadata:
  name: distribution-srv
spec:
  type: ClusterIP
  selector:
    app: distribution
  ports:
    - name: distribution
      protocol: TCP
      port: 3000
      targetPort: 3000

kind: Service
metadata:
  name: my-service
  namespace: prod
spec:
  type: ExternalName
  externalName: 'mongodb://ssomlk:<password>@cluster0-shard-00-00.yeu7t.mongodb.net:27017,cluster0-shard-00-01.yeu7t.mongodb.net:27017,cluster0-shard-00-02.yeu7t.mongodb.net:27017/<db_name>?ssl=true&replicaSet=atlas-fznj9q-shard-0&authSource=admin&retryWrites=true&w=majority'```

Answer 2

以下步骤对我有用。来自其他 Github 用户的帮助。

I have stopped and deleted the existing minikube

Downloaded "https://github.com/kubernetes/minikube/releases/download/v1.8.2/minikube-windows-amd64.exe" and renamed it to minikube.exe

Placed the above exe in the same folder in which my kubectl.exe is existing. (C:\kube). This path is added to the environment variable "Path" of my user.

Created a hyperv switch, Open Hyper-V Manager, Click on Virtual Switch Manager, Create New Virtual Network Switch, Select external type, and OK.

Ran this command `minikube start driver="hyperv" --hyperv-virtual-switch="MY-SWITCH"`

minikube successfully started

然后我创建了一个部署，它成功地拉取了镜像并运行了容器，没有任何问题。

MongooseServerSelectionError：在使用 Minikube 时无法连接到 MongoDB Atlas 集群中的任何服务器

2 个答案: