AWS Elastic Beanstalk 中是否有 API 調用來獲取正在運行的主機列表？ （有 IP）

Question

標題真的說明了一切。 我需要運行每個實例以了解其他實例是什么，包括它們的 IP 地址。 是否有 EB API 調用可以做到這一點？ 或者也許是 AWS 中更通用的方式？

Answer 1

AWS Elastic Beanstalk SDK 公開了提供有關環境和應用程序的詳細信息的方法。 （不清楚你的意思是我需要每個實例運行以了解其他實例是什么）

無論如何——您可以獲得應用程序列表並獲取有關這些 EB 應用程序的詳細信息。 例如，您可以獲得狀態（正在運行的 EB 應用程序將具有狀態值Ready ）和應用程序 URL（而不是 IP ）。 因此，您可以通過 SDK 獲得您正在尋找的詳細信息。

運行此代碼會返回您在 AWS 管理控制台中看到的詳細信息，例如：

• 應用程序名稱是 VideoAnalyzer
• 環境 ARN 是 arn:aws:elasticbeanstalk:us-east-1:xxxxxx047983:environment/VideoAnalyzer/Videoanalyzer-env
• 端點 URL 是 awseb-AWSEB-xxxxxxY1BQF02-xxxx6689.us-east-1.elb.amazonaws.com
• 狀態為就緒

我將向您展示 Java SDK v2 中的代碼。

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.elasticbeanstalk.ElasticBeanstalkClient;
import software.amazon.awssdk.services.elasticbeanstalk.model.DescribeApplicationsResponse;
import software.amazon.awssdk.services.elasticbeanstalk.model.ApplicationDescription;
import software.amazon.awssdk.services.elasticbeanstalk.model.DescribeEnvironmentsRequest;
import software.amazon.awssdk.services.elasticbeanstalk.model.DescribeEnvironmentsResponse;
import software.amazon.awssdk.services.elasticbeanstalk.model.EnvironmentDescription;
import software.amazon.awssdk.services.elasticbeanstalk.model.ElasticBeanstalkException;
import java.util.List;
//snippet-end:[eb.java2.describe_app.import]


/**
 * Before running this Java V2 code example, set up your development environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */

public class DescribeApplications {

    public static void main(String[] args) {

        Region region = Region.US_EAST_1;
        ElasticBeanstalkClient beanstalkClient = ElasticBeanstalkClient.builder()
                .region(region)
                .build();

        describeApps(beanstalkClient);
    }

    //snippet-start:[eb.java2.describe_app.main]
    public static void describeApps(ElasticBeanstalkClient beanstalkClient) {

        try {
            DescribeApplicationsResponse applicationsResponse = beanstalkClient.describeApplications();
            List<ApplicationDescription> apps = applicationsResponse.applications();
            for (ApplicationDescription app: apps) {
                System.out.println("The application name is "+app.applicationName());
                DescribeEnvironmentsRequest desRequest =  DescribeEnvironmentsRequest.builder()
                            .applicationName(app.applicationName())
                            .build();

                DescribeEnvironmentsResponse res = beanstalkClient.describeEnvironments(desRequest) ;
                List<EnvironmentDescription> envDesc = res.environments();
                for (EnvironmentDescription desc: envDesc) {
                    System.out.println("The Environment ARN is "+desc.environmentArn());
                    System.out.println("The Endpoint URL is "+ desc.endpointURL());
                    System.out.println("The status is "+ desc.status());
                }
            }
        } catch (ElasticBeanstalkException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }
    //snippet-end:[eb.java2.describe_app.main]
  }