使用 AWS SDK 取消弹性 IP 地址与 Amazon EC2 实例的关联

以下代码示例显示了如何取消弹性 IP 地址与 Amazon EC2 实例的关联。

操作示例是大型程序的代码摘录，必须在上下文中运行。在以下代码示例中，您可以查看此操作的上下文：

• 开始使用实例

.NET

AWS SDK for .NET

注意

在 GitHub 上查看更多内容。在 AWS 代码示例存储库 中查找完整示例，了解如何进行设置和运行。

    /// <summary>
    /// Disassociate an Elastic IP address from an EC2 instance.
    /// </summary>
    /// <param name="associationId">The association Id.</param>
    /// <returns>A Boolean value indicating the success of the action.</returns>
    public async Task<bool> DisassociateIp(string associationId)
    {
        var response = await _amazonEC2.DisassociateAddressAsync(
            new DisassociateAddressRequest { AssociationId = associationId });
        return response.HttpStatusCode == HttpStatusCode.OK;
    }

• 有关 API 详细信息，请参阅《AWS SDK for .NET API 参考》中的 DisassociateAddress。

Java

SDK for Java 2.x

注意

在 GitHub 上查看更多内容。在 AWS 代码示例存储库 中查找完整示例，了解如何进行设置和运行。

    public static void disassociateAddress(Ec2Client ec2, String associationId) {
        try {
            DisassociateAddressRequest addressRequest = DisassociateAddressRequest.builder()
                .associationId(associationId)
                .build();

            ec2.disassociateAddress(addressRequest);
            System.out.println("You successfully disassociated the address!");

        } catch (Ec2Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

• 有关 API 详细信息，请参阅《AWS SDK for Java 2.x API 参考》中的 DisassociateAddress。

JavaScript

SDK for JavaScript (v3)

注意

在 GitHub 上查看更多内容。在 AWS 代码示例存储库 中查找完整示例，了解如何进行设置和运行。

import { DisassociateAddressCommand } from "@aws-sdk/client-ec2";

import { client } from "../libs/client.js";

// Disassociate an Elastic IP address from an instance.
export const main = async () => {
  const command = new DisassociateAddressCommand({
    // You can also use PublicIp, but that is for EC2 classic which is being retired.
    AssociationId: "ASSOCIATION_ID",
  });

  try {
    await client.send(command);
    console.log("Successfully disassociated address");
  } catch (err) {
    console.error(err);
  }
};

• 有关 API 详细信息，请参阅《AWS SDK for JavaScript API 参考》中的 DisassociateAddress。

Kotlin

SDK for Kotlin

注意

这是适用于预览版中功能的预发行文档。本文档随时可能更改。

注意

在 GitHub 上查看更多内容。在 AWS 代码示例存储库 中查找完整示例，了解如何进行设置和运行。

suspend fun disassociateAddressSc(associationIdVal: String?) {
    val addressRequest = DisassociateAddressRequest {
        associationId = associationIdVal
    }
    Ec2Client { region = "us-west-2" }.use { ec2 ->
        ec2.disassociateAddress(addressRequest)
        println("You successfully disassociated the address!")
    }
}

• 有关 API 详细信息，请参阅《AWS SDK for Kotlin API 参考》中的 DisassociateAddress。

Python

适用于 Python (Boto3) 的 SDK

注意

在 GitHub 上查看更多内容。在 AWS 代码示例存储库 中查找完整示例，了解如何进行设置和运行。

class ElasticIpWrapper:
    """Encapsulates Amazon Elastic Compute Cloud (Amazon EC2) Elastic IP address actions."""

    def __init__(self, ec2_resource, elastic_ip=None):
        """
        :param ec2_resource: A Boto3 Amazon EC2 resource. This high-level resource
                             is used to create additional high-level objects
                             that wrap low-level Amazon EC2 service actions.
        :param elastic_ip: A Boto3 VpcAddress object. This is a high-level object that
                           wraps Elastic IP actions.
        """
        self.ec2_resource = ec2_resource
        self.elastic_ip = elastic_ip

    @classmethod
    def from_resource(cls):
        ec2_resource = boto3.resource("ec2")
        return cls(ec2_resource)


    def disassociate(self):
        """
        Removes an association between an Elastic IP address and an instance. When the
        association is removed, the instance is assigned a new public IP address.
        """
        if self.elastic_ip is None:
            logger.info("No Elastic IP to disassociate.")
            return

        try:
            self.elastic_ip.association.delete()
        except ClientError as err:
            logger.error(
                "Couldn't disassociate Elastic IP %s from its instance. Here's why: %s: %s",
                self.elastic_ip.allocation_id,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

• 有关 API 详细信息，请参阅《AWS SDK for Python（Boto3）API 参考》中的 DisassociateAddress。

有关 AWS 软件开发工具包开发人员指南和代码示例的完整列表，请参阅 将 Amazon EC2 与 AWS SDK 结合使用。本主题还包括有关入门的信息以及有关先前的软件开发工具包版本的详细信息。