本文介绍如何将Egg.js应用部署到函数计算。与传统的部署方法相比，您可以跳过购买机器等步骤，将传统的Egg.js应用一键部署至远端直接用于生产，并且拥有弹性伸缩、按量付费和免运维等特性。
背景信息
Egg.js为企业级框架和应用而生，为开发人员提供了Web开发的核心功能和一套具有高扩展性的插件机制。开发人员按照统一的约定开发应用，从而降低开发和维护成本。更多Egg的内容，请参见Egg.js。
操作步骤
示例一：以部署一个HelloWorld应用为例介绍具体的操作步骤。
- 在目标目录中，执行以下命令创建一个Egg.js项目。详细信息，请参见快速初始化。
npm init egg --type=simple
输出示例：
Need to install the following packages:
create-egg
Ok to proceed? (y) y
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
npm WARN deprecated socks@1.1.10: If using 2.x branch, please upgrade to at least 2.1.6 to avoid a serious bug with socket data flow and an import issue introduced in 2.1.0
[egg-init] use registry: https://registry.npmmirror.com
[egg-init] target dir is /test/egg-example
[egg-init] fetching npm info of egg-init-config
? Please select a boilerplate type simple - Simple egg app boilerplate
[egg-init] use boilerplate: simple(egg-boilerplate-simple)
[egg-init] fetching npm info of egg-boilerplate-simple
[egg-init] downloading https://registry.npmmirror.com/egg-boilerplate-simple/download/egg-boilerplate-simple-3.3.1.tgz
[egg-init] extract to /tmp/egg-init-boilerplate
[egg-init] collecting boilerplate config...
? project name egg-example
? project description
? project author
? cookie security keys 1632377928307_4634
[egg-init] write to /test/egg-example/.autod.conf.js
[egg-init] write to /test/egg-example/.eslintignore
[egg-init] write to /test/egg-example/.eslintrc
[egg-init] write to /test/egg-example/README.md
[egg-init] write to /test/egg-example/.gitignore
[egg-init] write to /test/egg-example/package.json
[egg-init] write to /test/egg-example/app/router.js
[egg-init] write to /test/egg-example/config/config.default.js
[egg-init] write to /test/egg-example/config/plugin.js
[egg-init] write to /test/egg-example/app/controller/home.js
[egg-init] write to /test/egg-example/test/app/controller/home.test.js
[egg-init] usage:
- cd /test/egg-example
- npm install
- npm start / npm run dev / npm test
- 执行以下命令，安装依赖。
npm install
输出示例：
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
npm WARN deprecated debug@3.2.6: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)
npm WARN deprecated babel-eslint@8.2.6: babel-eslint is now @babel/eslint-parser. This package will no longer receive updates.
npm WARN deprecated mkdirp@0.5.4: Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)
npm WARN deprecated mkdirp@0.5.1: Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)
npm WARN deprecated core-js@2.6.12: core-js@<3.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Please, upgrade your dependencies to the actual version of core-js.
added 1244 packages in 34s
- 执行以下命令运行本地项目。
- 执行
fun deploy -y命令将项目部署至函数计算。fun deploy -y
返回结果如下。
using template: template.yml
using region: cn-qingdao
using accountId: ***********3743
using accessKeyId: ***********Ptgk
using timeout: 60
Collecting your services information, in order to caculate devlopment changes...
Resources Changes(Beta version! Only FC resources changes will be displayed):
... ... ...
trigger httpTrigger deploy success
function egg-example deploy success
service egg-example deploy success
Detect 'DomainName:Auto' of custom domain 'Domain'
Fun will reuse the temporary domain 17090425-19861144305****.test.functioncompute.com, expired at 2020-04-27 10:27:05, limited by 1000 per day.
Waiting for custom domain Domain to be deployed...
custom domain Domain deploy success
部署成功后，您可以在日志中看到函数计算为您生成的临时域名，通过这个临时域名您可直接访问刚部署的应用。
说明 临时域名仅用作演示以及开发，具有时效性。如需用作生产，请绑定已经在阿里云备案的域名。详细信息，请参见
配置自定义域名。
示例二：以部署一个开源的Egg.js Web应用为例介绍具体的操作步骤。
应用示例预览效果，请参见预览效果。
- 执行以下命令把示例克隆到本地。
git clone https://github.com/OrangeXC/mtime
- 执行以下命令进入目录，并安装依赖。
- 执行以下命令，进入mtime目录。
- 执行以下命令，安装依赖。
- 在本地打开config/config.default.js文件，将MySQL的username、password配置为正确的值。
在本地启动应用时，需要使用
config/config.default.js文件中的数据库配置。
说明 在生产环境中启动应用时，Egg.js默认优先使用config/config.prod.js中的数据库配置。因此您需要将生产环境中的数据库信息配置到该文件中。配置完成后，您可以在本地使用npm run start和npm run stop命令以生产的方式启停应用来验证配置是否正确。
- 执行以下命令运行本地项目。
- 执行以下命令修改config/config.prod.js文件，获取Egg.js缓存与日志目录的读取权限。
config.rundir = '/tmp/run',
config.logger = {
dir: '/tmp/log',
}
- 执行
fun deploy -y命令将项目部署至函数计算。fun deploy -y
返回结果如下。
using template: template.yml
using region: cn-qingdao
using accountId: ***********3743
using accessKeyId: ***********Ptgk
using timeout: 60
Collecting your services information, in order to caculate devlopment changes...
Resources Changes(Beta version! Only FC resources changes will be displayed):
... ... ...
trigger httpTrigger deploy success
function egg-example deploy success
service egg-example deploy success
Detect 'DomainName:Auto' of custom domain 'Domain'
Fun will reuse the temporary domain 17090425-19861144305****.test.functioncompute.com, expired at 2020-04-27 10:27:05, limited by 1000 per day.
Waiting for custom domain Domain to be deployed...
custom domain Domain deploy success
部署成功后，您可以在日志中看到函数计算为您生成的临时域名，通过这个临时域名您可直接访问刚部署的应用。
说明 临时域名仅用作演示以及开发，具有时效性。如需用作生产，请绑定已经在阿里云备案的域名。详细信息，请参见
配置自定义域名。