AWS JS SDK V3（Lambda模块）-无法连接到实例元数据服务 [英] AWS JS SDK V3 (Lambda module) - Unable to connect to instance metadata service

问题描述

我以前使用的是一体式 aws-sdk npm模块（ https://www.npmjs.com/package/aws-sdk ）来调用AWS Lambda函数，因此以下代码运行良好：

I was previously using the all-in-one aws-sdk npm module (https://www.npmjs.com/package/aws-sdk) to invoke an AWS Lambda function, and for that the following code had been working well:

        //Some code to get "credentials"
        ...
        const AWS = require('aws-sdk');
        const lambda = new AWS.Lambda({
            accessKeyId: credentials.accessKeyId,
            secretAccessKey: credentials.secretAccessKey,
            region: Config.REGION
        });
        lambda.invoke(pullParams, (err, data) =>
            //I would do something with data
        );
        ...

现在，从 https://github.com/aws/aws-sdk-js-v3 ，我希望用于模块化 @ aws-sdk / client-lambda-node ，因为它是我项目中唯一需要的类。因此，我更改了代码（如此处的建议： https://github.com/aws/aws-sdk-js-v3/tree/master/packages/client-lambda-node#usage ），像这样：

Now, taking a cue from https://github.com/aws/aws-sdk-js-v3, I wish to use to modularised @aws-sdk/client-lambda-node, since it is the only class that I need in my project. Thus, I have changed my code (as suggested here: https://github.com/aws/aws-sdk-js-v3/tree/master/packages/client-lambda-node#usage) like so:

        import * as AWS from "@aws-sdk/client-lambda-node/Lambda";
        /*
          I believe there is a typo in the form of 
          "
           import * as AWS from "@aws-sdk/@aws-sdk/client-lambda-node/Lambda";
          "
          at the original page
        */
        ...
        //Some code to get the same "credentials" as above
        const lambda = new AWS.Lambda({
            accessKeyId: credentials.accessKeyId,
            secretAccessKey: credentials.secretAccessKey,
            region: Config.REGION
        });
        lambda.invokeAsync(pullParams, (err, data) =>
            //I want to do something with err / data
        );
        ...

对于它的价值，它位于ReactJS应用程序中（尽管我'确定那是不相关的）。在浏览器（运行较早的版本）中永久尝试使用版本为 0.1.0-preview.5 的上述代码给我

For what its worth, this is inside a ReactJS app (though I'm sure thats not relevant). Trying the above code with version 0.1.0-preview.5 inside a browser (where it worked earlier) perpetually gives me

1. http://169.254.169.254/latest/meta-data/iam/security-credentials/ net :: ERR_CONNECTION_TIMED_OUT


2. 错误：无法连接到实例元数据服务（我想与（1）有关）

1. http://169.254.169.254/latest/meta-data/iam/security-credentials/ net::ERR_CONNECTION_TIMED_OUT
2. Error: Unable to connect to instance metadata service (I guess related to (1))

库使用不稳定吗？还是我做错了事？

Is the library unstable for use, or am I doing something wrong

推荐答案

是的，SDK的版本3仍处于beta预览中，并且他们已经声明，期望可以做出重大更改：

Yes, version 3 of the SDK is still in beta preview and they've stated that breaking changes are to be expected:

在SDK处于预览状态时，您可能会遇到错误。

While the SDK is in preview, you may encounter bugs.

要回答您的问题，是的，目前生产绝对不稳定时间。您的特定问题很常见，我也无法深入探究。我的作品仍然使用v2。

To answer your question, yes, it is absolutely unstable for production at the present time. Your specific issue is quite common and I was unable to get to the bottom of it either. My production work all uses v2 still.

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