无法让 nodemon/ts-node-dev 在 dockerized 平均堆栈上工作
Posted
技术标签:
【中文标题】无法让 nodemon/ts-node-dev 在 dockerized 平均堆栈上工作【英文标题】:Cannot get nodemon/ts-node-dev working on dockerized mean stack 【发布时间】:2020-02-26 22:57:56 【问题描述】:Mean Stack 的新手,但已通过遵循各种教程设法在 dockerized 环境中进行设置。我主要使用https://itnext.io/building-restful-web-apis-with-node-js-express-mongodb-and-typescript-part-1-2-195bdaf129cf中解释的那个
我遇到的问题是,要自动编译对 TypeScript 文件的更改并重新启动服务失败,我不确定我在配置中缺少什么。我使用 nodemon 和 ts-node-dev 尝试了各种迭代,但没有成功。
服务器启动并 100% 提供页面,但代码更改没有触发任何内容。
以下是 Dockerfile(用于 Node Express 服务器)、package.json 和我的 tsconfig.json,如果有人能指出我哪里出错了,那将是一个很大的帮助。我还展示了整个堆栈的 docker-compose.yml 文件。
Dockerfile
FROM node:latest
# Create app directory
WORKDIR /usr/src/app
# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm@5+)
COPY package*.json ./
RUN npm install
RUN npm install --save body-parser express mongoose
RUN npm install --save nocache
RUN npm install --save nodemon typescript ts-node ts-node-dev
RUN npm install --save-dev tsc-watch
# If you are building your code for production
# RUN npm ci --only=production
# Bundle app source
COPY . .
EXPOSE 3000 27017
# Also tried starting with 'dev'
CMD [ "npm", "run", "prod" ]
package.json
"name": "apis-project",
"version": "1.0.0",
"description": "https://itnext.io/building-restful-web-apis-with-node-js-express-mongodb-and-typescript-part-1-2-195bdaf129cf",
"main": "index.js",
"scripts":
"build": "tsc",
"dev": "ts-node ./lib/server.ts",
"start": "nodemon ./dist/server.js",
"prod": "npm run build && npm run start"
,
"keywords": [
"nodejs",
"typescript"
],
"author": "",
"license": "ISC",
"dependencies":
"@types/express": "^4.17.1",
"body-parser": "^1.19.0",
"express": "^4.17.1",
"mongoose": "^5.7.7",
"nodemon": "^1.19.4"
,
"devDependencies":
"ts-node-dev": "^1.0.0-pre.43"
我在脚本部分尝试过的其他变体是:
"dev2": "ts-node-dev --respawn --transpileOnly ./lib/server.ts",
"dev3": "nodemon --watch 'lib/*.ts' --exec 'ts-node' lib/server.ts",
"dev5": "tsc-watch ./lib/server.ts --outDir ./dist --onSuccess \"node ./dist/server.js\" --onFailure \"echo Beep! Compilation Failed\" --compiler typescript/bin/tsc",
"dev6": "tsc-watch ./lib/*.ts --outDir ./dist --onSuccess \"node ./dist/server.js\" --onFailure \"echo Beep! Compilation Failed\" --compiler typescript/bin/tsc",
"dev7": "tsc-watch ./lib/server.ts --outDir ./dist --onSuccess \"node ./dist/server.js\" --onFailure \"echo Beep! Compilation Failed\" --compiler typescript/bin/tsc",
"x-compile": "tsc && node ./dist/server.js",
"x-dev": "./node_modules/nodemon/bin/nodemon.js -e ts --exec \"npm run x-compile\"",
tsconfig.json
// tsconfig.json
"compilerOptions":
"module": "commonjs",
"moduleResolution": "node",
"pretty": true,
"sourceMap": true,
"target": "es6",
"outDir": "./dist",
"baseUrl": "./lib"
,
"include": [
"lib/**/*.ts"
],
"exclude": [
"node_modules"
]
docker-compose.yml
version: '3' # specify docker-compose version
# Define the services/containers to be run
services:
# angular: # name of the first service
# hostname: localhost
# build: serviceangular # specify the directory of the Dockerfile
# ports:
# - 4200:4200 # specify port forewarding
#
express: #name of the second service
build: ./node-apis-project # specify the directory of the Dockerfile
ports:
- 3000:3000 #specify ports forwarding
links:
- database
database: # name of the third service
image: mongo # specify image to build container from
ports:
- 27017:27017 # specify port forewarding
volumes:
- ./data/mongo:/data/db
volumes:
data:
external: true
查看 express 容器时的 Docker 日志输出
> apis-project@1.0.0 prod /usr/src/app
> npm run build && npm run start
> apis-project@1.0.0 build /usr/src/app
> tsc
> apis-project@1.0.0 start /usr/src/app
> nodemon ./dist/server.js
[nodemon] 1.19.4
[nodemon] to restart at any time, enter `rs`
[nodemon] watching dir(s): lib/**/*
[nodemon] watching extensions: js
[nodemon] starting `node ./dist/server.js`
(node:62) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option useNewUrlParser: true to MongoClient.connect.
(node:62) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option useUnifiedTopology: true to the MongoClient constructor.
Express server listening on port 3000
【问题讨论】:
【参考方案1】:您现在可能已经找到了解决方案。我会留下这个答案作为参考。
在docker-compose.yml
中,确保您已将源代码映射到应用服务。在你的情况下:
version: '3'
services:
...
express:
build: ./node-apis-project
ports:
- 3000:3000
links:
- database
volumes:
- .:/usr/src/app # same as WORKDIR in your Dockerfile
...
根据nodemon manual,正常的监视机制在某些网络环境中可能会失败(例如运行 nodemon 的容器在已安装的驱动器上读取),因此您可能不得不使用 CPU 密集型的轮询(6-10% CPU在我的情况下使用)
对于 nodemon,使用 --legacy-watch
:
"dev3": "nodemon --legacy-watch --watch 'lib/*.ts' --exec 'ts-node' lib/server.ts",
对于 ts-node-dev,使用 --poll
:
"dev2": "ts-node-dev --poll --respawn --transpileOnly ./lib/server.ts",
【讨论】:
对于ts-node-dev
,--poll
成功了。这不在他们的自述文件中,但在源代码中确实出现了。【参考方案2】:
对于因 Kubernetes + ts-node-dev 失败并发送类似于以下错误的问题而遇到此问题的任何其他人:
[INFO] 09:29:47 ts-node-dev ver. 1.1.1 (using ts-node ver. 9.1.1, typescript ver. 4.1.3)
npm ERR! path /app
npm ERR! command failed
npm ERR! signal SIGKILL
npm ERR! command sh -c ts-node-dev src/index.ts
检查您在部署 yaml 中分配给容器的资源并尝试取消限制。
这为我解决了这个问题,并且我能够在此之后收听资源。
【讨论】:
以上是关于无法让 nodemon/ts-node-dev 在 dockerized 平均堆栈上工作的主要内容,如果未能解决你的问题,请参考以下文章
无法让 UIButton 在 ViewDidLoad 上淡入
无法让 DLookup 函数在 Access 2013 中工作