我对docker很陌生。我正在尝试使用Docker-Compose将MEAN应用程序(Angular前端,Node.js / Express后端和MongoDB)部署到Azure。
在本地,多容器环境按预期工作。前端按预期连接到后端Web api和db。当我将映像部署到Azure时,前端无法连接到后端Web API。
浏览器控制台中的错误是:
OPTIONS http://localhost:3000/api/dosa net :: ERR_CONNECTION_REFUSED
Angular Docker文件
FROM node:8.12-alpine
RUN mkdir -p /usr/src/app/front-end
WORKDIR /usr/src/app/front-end
ENV PATH /usr/src/app/node_modules/.bin:$PATH
COPY package*.json /usr/src/app/front-end/
RUN npm install
RUN npm install -g @angular/cli
COPY . /usr/src/app/front-end
CMD ng serve --host 0.0.0.0 --port 4200 --disable-host-check
Node.js Docker文件
FROM node:8.12-alpine
RUN mkdir -p /usr/src/app/back-end
WORKDIR /usr/src/app/back-end
ENV PATH /usr/src/app/node_modules/.bin:$PATH
COPY package*.json /usr/src/app/back-end/
RUN npm install
COPY . /usr/src/app/back-end
CMD npm start
docker-compose.yml
version: '2.1'
services:
client: # name of the service
image: {{myDockerRepo}}/frontend:dev
build: frontend
expose:
- 4200
environment:
NODE_ENV: production
ports:
- 4200:4200
links:
- server
server:
image: {{myDockerRepo}}/backend:dev
build: ./backend
expose:
- 3000
environment:
NODE_ENV: production
ports:
- 3000:3000
links:
- database
database:
image: mongo
ports:
- "27017:27017"
api.service.ts调用
const dosaApiUrl = "http://localhost:3000/api/dosa";
getDoSAs(): Observable<any> {
return this.http.get(dosaApiUrl, { headers: this.httpOptionsWAuth() }).pipe(
map(this.extractData),
catchError(this.handleError));
}
我通过azure cli运行以下命令
az webapp create --resource-group myResourceGroup --plan myPlan --name MyWebApp --multicontainer-config-type compose --multicontainer-config-file docker-compose.yml
Azure docker-compose日志(压缩)
2019-01-13 14:35:43.461 INFO - Starting container for site
2019-01-13 14:35:43.461 INFO - docker run -d -p 12574:4200 --name MyWebApp_client_5 -e WEBSITE_SITE_NAME=MyWebApp -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_INSTANCE_ID=206aa27402c709921f82d12a9fc0030a987d4d1f7523a0723759d8b10b751860 myDockerRepo/frontend:dev
2019-01-13 14:35:45.812 INFO - Starting container for site
2019-01-13 14:35:45.812 INFO - docker run -d -p 0:3000 --name MyWebApp_server_5 -e WEBSITE_SITE_NAME=MyWebApp -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_INSTANCE_ID=206aa27402c709921f82d12a9fc0030a987d4d1f7523a0723759d8b10b751860 myDockerRepo/backend:dev
2019-01-13 14:35:47.026 INFO - Starting container for site
2019-01-13 14:35:47.026 INFO - docker run -d -p 0:27017 --name MyWebApp_database_5 -e WEBSITE_SITE_NAME=MyWebApp -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_INSTANCE_ID=206aa27402c709921f82d12a9fc0030a987d4d1f7523a0723759d8b10b751860 mongo
2019-01-13 14:35:47.026 INFO - Logging is not enabled for this container.
Please use https://aka.ms/linux-diagnostics to enable logging to see container logs here.
2019-01-13 14:38:45.686 INFO - Started multi-container app
2019-01-13 14:38:45.760 INFO - Container MyWebApp_client_5 for site MyWebApp initialized successfully.
我可以使用docker-compose up --build在本地调用后端Web api,但是在部署到Azure时它不起作用
答案 0 :(得分:1)
在Azure上部署多容器时,与在本地Docker服务器上部署多容器有所不同。
您可以使用Docker撰写设置links
来绑定Web应用程序和后端服务器或其他服务。但是在Azure上,它最依赖于环境。有一个示例Creating a multi-container app in Web App for Containers on Azure。示例撰写文件如下:
version: '3.3'
services:
db:
image: mysql:5.7
volumes:
- db_data:/var/lib/mysql
restart: always
environment:
MYSQL_ROOT_PASSWORD: somewordpress
MYSQL_DATABASE: wordpress
MYSQL_USER: wordpress
MYSQL_PASSWORD: wordpress
wordpress:
depends_on:
- db
image: wordpress:latest
ports:
- "8000:80"
restart: always
environment:
WORDPRESS_DB_HOST: db:3306
WORDPRESS_DB_USER: wordpress
WORDPRESS_DB_PASSWORD: wordpress
volumes:
db_data:
您可以按照其中的步骤进行操作,并根据需要在撰写文件中进行一些修改。希望对您有帮助。