本文介绍如何将Koa.js应用部署到函数计算。与传统的部署方法相比,您可将传统的Koa.js应用一键部署至远端直接用于生产。跳过购买机器等步骤的同时,还拥有了弹性伸缩、按量付费和免运维等特性。

前提条件

您已完成以下操作:

操作步骤

  1. 在目标目录中执行以下命名初始化项目。
    s init devsapp/start-koa -d start-koa
    -d用于指定项目名称,本文以项目名称start-koa为例,介绍如何将Koa.js迁移到函数计算。
    说明 若已存在该项目则跳过此步骤。
    输出示例:
     Serverless Awesome: https://github.com/Serverless-Devs/package-awesome
    
     devsapp!start-koa@0.0.8.zip file decompression completed
     please select credential alias default
    
         _   __
        | | / /
        | |/ /  ___   __ _
        |    \ / _ \ / _` |
        | |\  \ (_) | (_| |
        \_| \_/\___/ \__,_|
    
    
        Welcome to the start-koa application
         This application requires to open these services:
             FC : https://fc.console.aliyun.com/
             ACR: https://cr.console.aliyun.com/
         This application can help you quickly deploy the Koa project:
             Full yaml configuration: https://github.com/devsapp/koa#%E5%AE%8C%E6%95%B4yaml
             Koa development docs   : https://www.koajs.com.cn/
         This application homepage: https://github.com/devsapp/start-koa
    
    
     Thanks for using Serverless-Devs
     You could [cd /test/start-koa] and enjoy your serverless journey!
     If you need help for this example, you can use [s -h] after you enter folder.
     Document Star:https://github.com/Serverless-Devs/Serverless-Devs
  2. 执行以下命令,进入项目目录。
    cd start-koa
  3. 执行以下命令,部署项目。
    s deploy
    输出示例:
    [2021-08-30T15:40:24.764] [INFO ] [S-CLI] - Start ...
    [2021-08-30T15:40:24.773] [INFO ] [S-CLI] - Start the pre-action
    [2021-08-30T15:40:24.773] [INFO ] [S-CLI] - Action: npm install --production
    npm notice created a lockfile as package-lock.json. You should commit this file.
    npm WARN start-koa@1.0.0 No description
    npm WARN start-koa@1.0.0 No repository field.
    
    added 44 packages from 23 contributors in 1.399s
    
    3 packages are looking for funding
      run `npm fund` for details
    
    [2021-08-30T15:40:26.558] [INFO ] [S-CLI] - End the pre-action
      devsapp!koa@0.1.7.zip file decompression completed
      Using web framework type: nas, If you want to deploy with container, you can [s cli fc-default set web-framework container] to switch.
    [2021-08-30T15:40:40.923] [WARN ] [KOA] - The startup file is not found, create a [start.sh] as the startup file.
      Using web framework type: nas, If you want to deploy with container, you can [s cli fc-default set web-framework container] to switch.
    (node:10777) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
    (Use `node --trace-deprecation ...` to show where the warning was created)
      End of request
      Deployed.
      End of request
    [2021-08-30T15:40:47.580] [INFO ] [FC-DEPLOY] - Using region: cn-shenzhen
    [2021-08-30T15:40:47.581] [INFO ] [FC-DEPLOY] - Using access alias: default
    [2021-08-30T15:40:47.581] [INFO ] [FC-DEPLOY] - Using accessKeyID: 188077086902****
    [2021-08-30T15:40:47.581] [INFO ] [FC-DEPLOY] - Using accessKeySecret: ldHUiJLoGto****
      Using fc deploy type: sdk, If you want to deploy with pulumi, you can [s cli fc-default set deploy-type pulumi] to switch.
    [2021-08-30T15:40:48.291] [INFO ] [FC-DEPLOY] - Checking Service serverless-devs-koa exists
    [2021-08-30T15:40:48.643] [INFO ] [FC-DEPLOY] - Setting role: AliyunFCDefaultRole
    [2021-08-30T15:40:48.950] [INFO ] [RAM] - Checking Role AliyunFCDefaultRole exists
    [2021-08-30T15:40:49.118] [INFO ] [RAM] - Updating role: AliyunFCDefaultRole
    [2021-08-30T15:40:49.218] [INFO ] [RAM] - Checking Plicy AliyunFCDefaultRolePolicy exists
    [2021-08-30T15:40:49.353] [INFO ] [FC-DEPLOY] - Using vpcConfig: auto: fc will try to generate related vpc resources automatically
    [2021-08-30T15:40:50.147] [INFO ] [VPC] - Getting vpc: fc-deploy-component-generated-vpc-cn-shenzhen
    [2021-08-30T15:40:50.308] [INFO ] [VPC] - Getting vswitch: fc-deploy-component-generated-vswitch-cn-shenzhen
    [2021-08-30T15:40:50.443] [INFO ] [VPC] - Getting securityGroup: fc-deploy-component-generated-securityGroup-cn-shenzhen
    [2021-08-30T15:40:50.626] [INFO ] [FC-DEPLOY] - Generated vpcConfig:
    securityGroupId: sg-wz92ctigpi221smc****
    vSwitchId: vsw-wz9qnuult4q5g4f7n****
    vpcId: vpc-wz9x9bzs0wtvjgt6n****
    
    [2021-08-30T15:40:50.627] [INFO ] [FC-DEPLOY] - Using nasConfig: auto: fc will try to generate related nas file system automatically
    [2021-08-30T15:41:15.512] [INFO ] [FC-DEPLOY] - Generated nasConfig:
    groupId: 10003
    mountPoints:
      - fcDir: /mnt/auto
        nasDir: /serverless-devs-koa
        serverAddr: example.com
    userId: 10003
    
    [2021-08-30T15:41:15.514] [INFO ] [FC-DEPLOY] - Checking Function koa exists
    [2021-08-30T15:41:15.617] [WARN ] [FC-DEPLOY] - Image registry.cn-shenzhen.aliyuncs.com/web-framework/nodejs12:0.0.1 dose not exist locally.
    Maybe you need to run 's build' first if it dose not exist remotely.
    [2021-08-30T15:41:15.621] [INFO ] [FC-DEPLOY] - Checking Trigger serverless-devs-koa exists
    [2021-08-30T15:41:15.719] [INFO ] [FC-DEPLOY] - Checking Trigger serverless-devs-koa exists
    [2021-08-30T15:41:15.824] [INFO ] [FC-DEPLOY] - Creating service: serverless-devs-koa
    [2021-08-30T15:41:15.824] [INFO ] [FC-DEPLOY] - Creating function: koa
    [2021-08-30T15:41:15.825] [INFO ] [FC-DEPLOY] - Creating triggers: ["serverless-devs-koa"]
      Make service serverless-devs-koa success.
      Make function serverless-devs-koa/koa success.
      Make trigger serverless-devs-koa/koa/serverless-devs-koa success.
    [2021-08-30T15:41:18.879] [INFO ] [FC-DEPLOY] - Checking Service serverless-devs-koa exists
    [2021-08-30T15:41:18.950] [INFO ] [FC-DEPLOY] - Checking Function koa exists
    [2021-08-30T15:41:19.107] [INFO ] [FC-DEPLOY] - Checking Trigger serverless-devs-koa exists
    [2021-08-30T15:41:19.323] [INFO ] [FC-DEPLOY] - Creating custom domain: koa.serverless-devs-koa.188077086902****.cn-shenzhen.fc.devsapp.net
    [2021-08-30T15:41:20.017] [INFO ] [FC-DOMAIN] - Creating custom domain: koa.serverless-devs-koa.188077086902****.cn-shenzhen.fc.devsapp.net
    
    There is auto config in the service: serverless-devs-koa
    [2021-08-30T15:41:20.303] [INFO ] [WEB-FRAMEWORK] - nas component get src is: ./src
    Packing ...
    Package complete.
      Start uploading file: /mnt/2bfb748534-tpm20-cn-shenzhen/serverless-devs-koa/koa/src.zip
      File uploaded successfully: /mnt/2bfb748534-tpm20-cn-shenzhen/serverless-devs-koa/koa/src.zip
      upload done
    [2021-08-30T15:41:54.207] [INFO ] [FC-NAS] - unzipping file
    [2021-08-30T15:41:56.324] [INFO ] [FC-NAS] - unzip done
      Try container acceleration
    framework-test:
      region: cn-shenzhen
      serviceName: serverless-devs-koa
      functionName: koa
      customDomains:
        - http://koa.serverless-devs-koa.188077086902****.cn-shenzhen.fc.devsapp.net

执行结果

成功部署该项目后,您可以在执行输出中查看到函数计算生成的临时域名,通过该临时域名可以访问刚部署的应用,例如执行以下命令访问应用:

curl http://koa.serverless-devs-koa.188077086902****.cn-shenzhen.fc.devsapp.net
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,请参见绑定自定义域名