Docker Dynamodb错误:带有dynamodb的Nodejs应用程序在坞中不工作，但是没有它

Question

我用dynamodb中的一个表制作了一个简单的nodejs应用程序。我正在使用沃格斯作为数据采集器。--如果我不修改它，它就会工作得很好。--

我试着用我在开发模式下运行这个应用程序的方式来运行这个对接程序。这也没用。

下面是我用来创建表的代码：

module.exports = function () {
    const vogels = require('vogels');
    // const AWS= require('aws-sdk');
    const Lr = require("../api/models/LRModel");
    if (process.env.NODE_ENV === "test") {
        AWS.config.update({ accessKeyId: "myKeyId", secretAccessKey: "secretKey", region: "us-west-2" });
        vogels.dynamoDriver(new AWS.DynamoDB({ endpoint: 'http://localhost:8000' }));
    } else {
        console.log("AWS access key=", process.env.AWS_ACCESS_KEY, "AWS Secret key=", process.env.AWS_SECRET_KEY, "AWS Region =", process.env.AWS_REGION);
        vogels.AWS.config.update({accessKeyId: process.env.AWS_ACCESS_KEY, secretAccessKey: process.env.AWS_SECRET_KEY, region: process.env.AWS_REGION, sslEnabled: false });

    }

    vogels.createTables({
        'lrs': {readCapacity: 10, writeCapacity: 10}
    }, function(err) {
        if (err) {
            console.log('Error creating tables: ', err);
        } else {
            console.log('Tables have been created');
        }
    });
}

下面是我在码头遇到的错误：

server-0   | Error creating tables:  { TimeoutError: Missing credentials in config
server-0   |     at ClientRequest.<anonymous> (/app/node_modules/vogels/node_modules/aws-sdk/lib/http/node.js:61:34)
server-0   |     at ClientRequest.g (events.js:291:16)
server-0   |     at emitNone (events.js:86:13)
server-0   |     at ClientRequest.emit (events.js:185:7)
server-0   |     at Socket.emitTimeout (_http_client.js:626:10)
server-0   |     at Socket.g (events.js:291:16)
server-0   |     at emitNone (events.js:86:13)
server-0   |     at Socket.emit (events.js:185:7)
server-0   |     at Socket._onTimeout (net.js:339:8)
server-0   |     at ontimeout (timers.js:365:14)
server-0   |   message: 'Missing credentials in config',
server-0   |   code: 'CredentialsError',
server-0   |   time: 2017-06-29T05:36:23.724Z,
server-0   |   originalError:
server-0   |    { message: 'Could not load credentials from any providers',
server-0   |      code: 'CredentialsError',
server-0   |      time: 2017-06-29T05:36:23.724Z,
server-0   |      originalError:
server-0   |       { message: 'Missing credentials in config',
server-0   |         code: 'CredentialsError',
server-0   |         time: 2017-06-29T05:36:23.721Z,
server-0   |         originalError: [Object] } } }

我清楚地注意到，在不使用接口的情况下运行时，dynamodb端点是一个http端点。下面是从https://github.com/aws/aws-sdk-js/blob/8904e9c730fb2fccf9d201f66266a6e2cbb75348/lib/http/node.js记录的端点

(第13行)。

server-0   |   Endpoint {
server-0   |   protocol: 'https:',
server-0   |   host: 'dynamodb.us-west-1.amazonaws.com',
server-0   |   port: 443,
server-0   |   hostname: 'dynamodb.us-west-1.amazonaws.com',
server-0   |   pathname: '/',
server-0   |   path: '/',
server-0   |   href: 'https://dynamodb.us-west-1.amazonaws.com/',
server-0   |   constructor: { [Function: Endpoint] __super__: [Function: Object] } }

当我用与对接运行它时，dynamodb端点是一个httpS端点。下面是从https://github.com/aws/aws-sdk-js/blob/8904e9c730fb2fccf9d201f66266a6e2cbb75348/lib/http/node.js记录的端点

(第13行)。

server-0   |   Endpoint {
server-0   |   protocol: 'http:',
server-0   |   host: '169.254.169.254',
server-0   |   port: 80,
server-0   |   hostname: '169.254.169.254',
server-0   |   pathname: '/latest/meta-data/iam/security-credentials/',
server-0   |   path: '/latest/meta-data/iam/security-credentials/',
server-0   |   href: 'http://169.254.169.254/latest/meta-data/iam/security-credentials/' }

我这是怎么回事？

Answer 1

当我在不使用docker的情况下运行应用程序时，凭据是从/.aws/credentials中提取的。我觉得这件事是通过vogels.AWS.config.update({accessKeyId: process.env.AWS_ACCESS_KEY, secretAccessKey: process.env.AWS_SECRET_KEY, region: process.env.AWS_REGION, sslEnabled: false });发生的

我在config.js of aws-sdk中记录了update函数中的选项，并在朋友的输入下找到了这些选项。

罪魁祸首似乎是，表定义应该在up配置更新之后。我把这行const Lr = require("../api/models/LRModel");放在config.update下面，现在运行良好。