Auto Scaling 시작

PDF

다음 코드 예제에서는 Auto Scaling을 사용하여 시작하는 방법을 보여 줍니다.

.NET

AWS SDK for .NET

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

namespace AutoScalingActions;

using Amazon.AutoScaling;

public class HelloAutoScaling
{
    /// <summary>
    /// Hello Amazon EC2 Auto Scaling. List EC2 Auto Scaling groups.
    /// </summary>
    /// <param name="args"></param>
    /// <returns>Async Task.</returns>
    static async Task Main(string[] args)
    {
        var client = new AmazonAutoScalingClient();

        Console.WriteLine("Welcome to Amazon EC2 Auto Scaling.");
        Console.WriteLine("Let's get a description of your Auto Scaling groups.");

        var response = await client.DescribeAutoScalingGroupsAsync();

        response.AutoScalingGroups.ForEach(autoScalingGroup =>
        {
            Console.WriteLine($"{autoScalingGroup.AutoScalingGroupName}\t{autoScalingGroup.AvailabilityZones}");
        });

        if (response.AutoScalingGroups.Count == 0)
        {
            Console.WriteLine("Sorry, you don't have any Amazon EC2 Auto Scaling groups.");
        }
    }
}

• API 세부 정보는 AWS SDK for .NET API 참조의 DescribeAutoScalingGroups을 참조하십시오.

C++

SDK for C++

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

CMakeLists.txt CMake 파일의 코드입니다.

# Set the minimum required version of CMake for this project.
cmake_minimum_required(VERSION 3.13)

# Set the AWS service components used by this project.
set(SERVICE_COMPONENTS autoscaling)

# Set this project's name.
project("hello_autoscaling")

# Set the C++ standard to use to build this target.
# At least C++ 11 is required for the AWS SDK for C++.
set(CMAKE_CXX_STANDARD 11)

# Use the MSVC variable to determine if this is a Windows build.
set(WINDOWS_BUILD ${MSVC})

if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK.
    string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all")
    list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH})
endif ()

# Find the AWS SDK for C++ package.
find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS})

if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS)
     # Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging.

     # set(BIN_SUB_DIR "/Debug") # If you are building from the command line, you may need to uncomment this 
                                    # and set the proper subdirectory to the executables' location.

     AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR})
endif ()

add_executable(${PROJECT_NAME}
        hello_autoscaling.cpp)

target_link_libraries(${PROJECT_NAME}
        ${AWSSDK_LINK_LIBRARIES})

hello_autoscaling.cpp 소스 파일의 코드입니다.

#include <aws/core/Aws.h>
#include <aws/autoscaling/AutoScalingClient.h>
#include <aws/autoscaling/model/DescribeAutoScalingGroupsRequest.h>
#include <iostream>

/*
 *  A "Hello Autoscaling" starter application which initializes an Amazon EC2 Auto Scaling client and describes the
 *  Amazon EC2 Auto Scaling groups.
 *
 *  main function
 *
 *  Usage: 'hello_autoscaling'
 *
 */

int main(int argc, char **argv) {
    Aws::SDKOptions options;
    // Optionally change the log level for debugging.
//   options.loggingOptions.logLevel = Utils::Logging::LogLevel::Debug;
    Aws::InitAPI(options); // Should only be called once.
    int result = 0;
    {
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

        Aws::AutoScaling::AutoScalingClient autoscalingClient(clientConfig);

        std::vector<Aws::String> groupNames;
        Aws::String nextToken; // Used for pagination.

        do {

            Aws::AutoScaling::Model::DescribeAutoScalingGroupsRequest request;
            if (!nextToken.empty()) {
                request.SetNextToken(nextToken);
            }

            Aws::AutoScaling::Model::DescribeAutoScalingGroupsOutcome outcome =
                    autoscalingClient.DescribeAutoScalingGroups(request);

            if (outcome.IsSuccess()) {
                const Aws::Vector<Aws::AutoScaling::Model::AutoScalingGroup> &autoScalingGroups =
                        outcome.GetResult().GetAutoScalingGroups();
                for (auto &group: autoScalingGroups) {
                    groupNames.push_back(group.GetAutoScalingGroupName());
                }
                nextToken = outcome.GetResult().GetNextToken();
            } else {
                std::cerr << "Error with AutoScaling::DescribeAutoScalingGroups. "
                          << outcome.GetError().GetMessage()
                          << std::endl;
                result = 1;
                break;
            }
        } while (!nextToken.empty());

        std::cout << "Found " << groupNames.size() << " AutoScaling groups." << std::endl;
        for (auto &groupName: groupNames) {
            std::cout << "AutoScaling group: " << groupName << std::endl;
        }

    }


    Aws::ShutdownAPI(options); // Should only be called once.
    return result;
}

• API 세부 정보는 AWS SDK for C++ API 참조의 DescribeAutoScalingGroups을 참조하십시오.

Java

SDK for Java 2.x

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.autoscaling.AutoScalingClient;
import software.amazon.awssdk.services.autoscaling.model.AutoScalingGroup;
import software.amazon.awssdk.services.autoscaling.model.DescribeAutoScalingGroupsResponse;
import java.util.List;

/**
 * Before running this SDK for Java (v2) code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DescribeAutoScalingGroups {
    public static void main(String[] args) throws InterruptedException {
        AutoScalingClient autoScalingClient = AutoScalingClient.builder()
                .region(Region.US_EAST_1)
                .build();

        describeGroups(autoScalingClient);
    }

    public static void describeGroups(AutoScalingClient autoScalingClient) {
        DescribeAutoScalingGroupsResponse response = autoScalingClient.describeAutoScalingGroups();
        List<AutoScalingGroup> groups = response.autoScalingGroups();
        groups.forEach(group -> {
            System.out.println("Group Name: " + group.autoScalingGroupName());
            System.out.println("Group ARN: " + group.autoScalingGroupARN());
        });
    }
}

• API에 대한 세부 정보는 AWS SDK for Java 2.x API 참조의 DescribeAutoScalingGroups를 참조하세요.

PHP

SDK for PHP

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

    public function helloService()
    {
        $autoScalingClient = new AutoScalingClient([
            'region' => 'us-west-2',
            'version' => 'latest',
            'profile' => 'default',
        ]);

        $groups = $autoScalingClient->describeAutoScalingGroups([]);
        var_dump($groups);
    }

• API 세부 정보는 AWS SDK for PHP API 참조의 DescribeAutoScalingGroups을 참조하십시오.

Python

SDK for Python (Boto3)

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

import boto3


def hello_autoscaling(autoscaling_client):
    """
    Use the AWS SDK for Python (Boto3) to create an Amazon EC2 Auto Scaling client and list
    some of the Auto Scaling groups in your account.
    This example uses the default settings specified in your shared credentials
    and config files.

    :param autoscaling_client: A Boto3 Amazon EC2 Auto Scaling client object.
    """
    print(
        "Hello, Amazon EC2 Auto Scaling! Let's list up to ten of you Auto Scaling groups:"
    )
    response = autoscaling_client.describe_auto_scaling_groups()
    groups = response.get("AutoScalingGroups", [])
    if groups:
        for group in groups:
            print(f"\t{group['AutoScalingGroupName']}: {group['AvailabilityZones']}")
    else:
        print("There are no Auto Scaling groups in your account.")


if __name__ == "__main__":
    hello_autoscaling(boto3.client("autoscaling"))

• API 세부 정보는 AWS SDK for Python (Boto3) API 참조의 DescribeAutoScalingGroups을 참조하십시오.

Ruby

SDK for Ruby

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

require 'aws-sdk-autoscaling'
require 'logger'

# AutoScalingManager is a class responsible for managing AWS Auto Scaling operations
# such as listing all Auto Scaling groups in the current AWS account.
class AutoScalingManager
  def initialize(client)
    @client = client
    @logger = Logger.new($stdout)
  end

  # Gets and prints a list of Auto Scaling groups for the account.
  def list_auto_scaling_groups
    paginator = @client.describe_auto_scaling_groups
    auto_scaling_groups = []
    paginator.each_page do |page|
      auto_scaling_groups.concat(page.auto_scaling_groups)
    end

    if auto_scaling_groups.empty?
      @logger.info('No Auto Scaling groups found for this account.')
    else
      auto_scaling_groups.each do |group|
        @logger.info("Auto Scaling group name: #{group.auto_scaling_group_name}")
        @logger.info("  Group ARN:             #{group.auto_scaling_group_arn}")
        @logger.info("  Min/max/desired:       #{group.min_size}/#{group.max_size}/#{group.desired_capacity}")
        @logger.info("\n")
      end
    end
  end
end

if $PROGRAM_NAME == __FILE__
  autoscaling_client = Aws::AutoScaling::Client.new
  manager = AutoScalingManager.new(autoscaling_client)
  manager.list_auto_scaling_groups
end

• API에 대한 세부 정보는 AWS SDK for Ruby API 참조의 DescribeAutoScalingGroups를 참조하세요.

Rust

SDK for Rust

참고

GitHub에 더 많은 내용이 있습니다. AWS 코드 예시 리포지토리에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요.

async fn list_groups(client: &Client) -> Result<(), Error> {
    let resp = client.describe_auto_scaling_groups().send().await?;

    println!("Groups:");

    let groups = resp.auto_scaling_groups();

    for group in groups {
        println!(
            "Name:  {}",
            group.auto_scaling_group_name().unwrap_or("Unknown")
        );
        println!(
            "Arn:   {}",
            group.auto_scaling_group_arn().unwrap_or("unknown"),
        );
        println!("Zones: {:?}", group.availability_zones(),);
        println!();
    }

    println!("Found {} group(s)", groups.len());

    Ok(())
}

• API 세부 정보는 AWS SDK for Rust API 참조의 DescribeAutoScalingGroups을 참조하십시오.