使用预先存在的应用程序配置devspace的过程

Question

在这件事上，我对库伯内特斯(和道克)并不陌生。我需要了解使用Devspace迁移我现有的Vue.js应用程序的过程。我已经在运行这个应用程序了，大概，但是我没有连接到

ws://localhost:4000/graphql

或者能够建立起一种蒙戈联系。

MongoServerSelectionError: ECONNREFUSED 127.0.0.1:27017

相关预先存在的package.json入口点

"serve": "vue-cli-service serve -mode development",
"build": "vue-cli-service build",
"apollo": "vue-cli-service apollo:dev --generate-schema",
"apollo:schema:generate": "vue-cli-service apollo:schema:generate",
"apollo:schema:publish": "vue-cli-service apollo:schema:publish",
"apollo:start": "vue-cli-service apollo:start",

app结构

/apollo-server
  context.js  ## Mongo connection made here.
/src
  vue-apollo.js ## Apollo setup (Graphql is setup here.)
Dockerfile
devspace.yaml
package.json

现在,

Dockerfile

FROM node:13.12.0-alpine

# Set working directory
WORKDIR /app

# Add package.json to WORKDIR and install dependencies
COPY package*.json ./
RUN npm install

# Add source code files to WORKDIR
COPY . .

# Application port (optional)
# express server runs on port 3000
EXPOSE 3000

# Debugging port (optional)
# For remote debugging, add this port to devspace.yaml: dev.ports[*].forward[*].port: 9229
EXPOSE 9229

CMD ["npm", "start"]

devspace.yaml

version: v1beta9
images:
  app:
    image: sandbox/practiceapp
    preferSyncOverRebuild: true
    injectRestartHelper: false
    cmd: ["yarn", "serve"]
    appendDockerfileInstructions:
    - USER root
  backend:
    image: sandbox/backend
    preferSyncOverRebuild: true
    injectRestartHelper: false
    entrypoint: ["yarn", "apollo"]
    appendDockerfileInstructions:
    - USER root
deployments:
- name: frontend
  helm:
    componentChart: true
    values:
      containers:
      - image: sandbox/practiceapp
      service:
        ports:
        - port: 8080
- name: backend
  helm:
    componentChart: true
    values:
      containers:
      - image: sandbox/backend
      service:
        ports:
        - port: 4000
        - port: 3000
        - port: 27017
# - name: mongo
#   helm:
#     componentChart: true
#     values:
#       containers:
#       - image: sandbox/mongo
#       service:
#         ports:
#         - port: 27017
dev:
  ports:
  - imageName: app
    forward:
    - port: 8080
  # - imageName: apollo
  #   forward:
  #     port: 3000
  # - imageName: graphql
  #   forward:
  #     port: 4000
  # - imageName: mongo
  #   forward:
  #     port: 27017
  open:
  - url: http://localhost:8080
  - url: http://localhost:4000/graphql
  sync:
  - imageName: app
    excludePaths:
    - .git/
    uploadExcludePaths:
    - Dockerfile
    - node_modules/*
    - '!node_modules/.temp/'
    - devspace.yaml
    onUpload:
      restartContainer: true
profiles:
- name: production
  patches:
  - op: remove
    path: images.app.injectRestartHelper
  - op: remove
    path: images.app.appendDockerfileInstructions
- name: interactive
  patches:
  - op: add
    path: dev.interactive
    value:
      defaultEnabled: true
  - op: add
    path: images.app.entrypoint
    value:
    - sleep
    - "9999999999"

我一直在寻找关于如何包含现有应用程序的服务的信息，但我很难理解。我需要一些指导，如何设置这一点，或在哪里查找。

谢谢你的帮助和时间。

Answer 1

从你提供的信息来看，我认为这可能是一个网络问题。请检查您的应用程序是否在所有接口上侦听，而不是只在localhost上侦听，因为这会导致连接被拒绝，如本故障排除指南：https://devspace.sh/cli/docs/guides/networking-domains#troubleshooting所述。

Answer 2

解决这个问题的方法是重构我的应用程序的结构，包括deployments中的服务端口和dev.ports中的转发端口。

deployments:
- name: app
  helm:
    componentChart: true
    values:
      containers:
      - image: namespace/frontend
      service:
        name: app-service
        ports:
        - port: 8080
        - port: 4000
dev:
   ports:
   - imageName: app
     forward:
     - port: 8080
     - port: 4000

我的应用程序的最终结构：

./backend
   .dockerignore
   Dockerfile
   package.json
./frontend
   .dockerignore
   Dockerfile
   package.json
devspace.yaml

就连接mongodb而言，我最初是从minikube开始，然后迁移到docker桌面，但由于在docker桌面上使用副本集(本地主机不能被分配为外部ip的两倍)，所以无法设置具有外部负载平衡访问权限的无头端口。我使用bitnami的mongodb头盔图表和devspace来完成这个任务。