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使用中的安全组Amazon EC2

创建安全组

要创建安全组，请调用 Ec2ClientcreateSecurityGroup使用CreateSecurityGroupRequest包含密钥的名称。

导入

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.ec2.Ec2Client;
import software.amazon.awssdk.services.ec2.model.CreateSecurityGroupRequest;
import software.amazon.awssdk.services.ec2.model.AuthorizeSecurityGroupIngressRequest;
import software.amazon.awssdk.services.ec2.model.AuthorizeSecurityGroupIngressResponse;
import software.amazon.awssdk.services.ec2.model.Ec2Exception;
import software.amazon.awssdk.services.ec2.model.IpPermission;
import software.amazon.awssdk.services.ec2.model.CreateSecurityGroupResponse;
import software.amazon.awssdk.services.ec2.model.IpRange;

代码

            CreateSecurityGroupRequest createRequest = CreateSecurityGroupRequest.builder()
                .groupName(groupName)
                .description(groupDesc)
                .vpcId(vpcId)
                .build();

            CreateSecurityGroupResponse resp= ec2.createSecurityGroup(createRequest);

请参阅 GitHub 上的完整示例。

配置安全组

安全组可以控制对 Amazon EC2 实例的入站 (入口) 流量和出站 (出口) 流量。

要向安全组添加入口规则，请使用 Ec2ClientauthorizeSecurityGroupIngress方法，提供安全组的名称和访问规则（IpPermission）您要分配给它AuthorizeSecurityGroupIngressRequest对象。以下示例介绍如何将 IP 权限添加到安全组。

导入

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.ec2.Ec2Client;
import software.amazon.awssdk.services.ec2.model.CreateSecurityGroupRequest;
import software.amazon.awssdk.services.ec2.model.AuthorizeSecurityGroupIngressRequest;
import software.amazon.awssdk.services.ec2.model.AuthorizeSecurityGroupIngressResponse;
import software.amazon.awssdk.services.ec2.model.Ec2Exception;
import software.amazon.awssdk.services.ec2.model.IpPermission;
import software.amazon.awssdk.services.ec2.model.CreateSecurityGroupResponse;
import software.amazon.awssdk.services.ec2.model.IpRange;

代码

首先，创建 Ec2Client

        Region region = Region.US_WEST_2;
        Ec2Client ec2 = Ec2Client.builder()
                .region(region)
                .build();

然后使用 Ec2ClientauthorizeSecurityGroupIngress方法，

            IpRange ipRange = IpRange.builder()
                .cidrIp("0.0.0.0/0").build();

            IpPermission ipPerm = IpPermission.builder()
                .ipProtocol("tcp")
                .toPort(80)
                .fromPort(80)
                .ipRanges(ipRange)
                .build();

            IpPermission ipPerm2 = IpPermission.builder()
                .ipProtocol("tcp")
                .toPort(22)
                .fromPort(22)
                .ipRanges(ipRange)
                .build();

            AuthorizeSecurityGroupIngressRequest authRequest =
                AuthorizeSecurityGroupIngressRequest.builder()
                        .groupName(groupName)
                        .ipPermissions(ipPerm, ipPerm2)
                        .build();

            AuthorizeSecurityGroupIngressResponse authResponse =
            ec2.authorizeSecurityGroupIngress(authRequest);

            System.out.printf(
                "Successfully added ingress policy to Security Group %s",
                groupName);

            return resp.groupId();

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

要向安全组添加出口规则，请在AuthorizeSecurityGroupEgressRequest到 Ec2ClientauthorizeSecurityGroupEgress方法。

请参阅 GitHub 上的完整示例。

描述安全组

要描述您的安全组或获取相关信息，请致电 Ec2ClientdescribeSecurityGroups方法。该方法返回 DescribeSecurityGroupsResponse，使用它后，您可以通过调用其 securityGroups 方法（返回一个 SecurityGroup 对象的列表）来访问安全组的列表。

导入

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.ec2.Ec2Client;
import software.amazon.awssdk.services.ec2.model.DescribeSecurityGroupsRequest;
import software.amazon.awssdk.services.ec2.model.DescribeSecurityGroupsResponse;
import software.amazon.awssdk.services.ec2.model.SecurityGroup;
import software.amazon.awssdk.services.ec2.model.Ec2Exception;

代码

     public static void describeEC2SecurityGroups(Ec2Client ec2, String groupId) {

        try {
            DescribeSecurityGroupsRequest request =
                DescribeSecurityGroupsRequest.builder()
                        .groupIds(groupId).build();

            DescribeSecurityGroupsResponse response =
                ec2.describeSecurityGroups(request);

             for(SecurityGroup group : response.securityGroups()) {
                System.out.printf(
                    "Found Security Group with id %s, " +
                            "vpc id %s " +
                            "and description %s",
                    group.groupId(),
                    group.vpcId(),
                    group.description());
            }
        } catch (Ec2Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

请参阅 GitHub 上的完整示例。

删除安全组

要删除安全组，请调用 Ec2ClientdeleteSecurityGroup方法，把它传递给DeleteSecurityGroupRequest包含要删除的安全组的 ID。

导入

import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.ec2.Ec2Client;
import software.amazon.awssdk.services.ec2.model.DeleteSecurityGroupRequest;
import software.amazon.awssdk.services.ec2.model.Ec2Exception;

代码

    public static void deleteEC2SecGroup(Ec2Client ec2,String groupId) {

        try {
            DeleteSecurityGroupRequest request = DeleteSecurityGroupRequest.builder()
                .groupId(groupId)
                .build();

            ec2.deleteSecurityGroup(request);
            System.out.printf(
                "Successfully deleted Security Group with id %s", groupId);

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

请参阅 GitHub 上的完整示例。

更多信息