如何获取已分配弹性IP的EC2实例列表？

Question

如何获取使用C＃分配静态公共弹性IP的EC2实例列表？

Answer 1

基本上你会获得实例和公共IP，然后你会比较实例是否包含任何公共IP地址。

以下是为您执行此操作的代码：

                AmazonEC2 ec2 = AWSClientFactory.CreateAmazonEC2Client();

                //Create instance request
                DescribeInstancesRequest request = new DescribeInstancesRequest();
                DescribeInstancesResponse response = ec2.DescribeInstances(request);

                //Create ip address request enumeration
                DescribeAddressesRequest daRequest = new DescribeAddressesRequest();
                DescribeAddressesResponse daResponse = ec2.DescribeAddresses(daRequest);
                var publicIps = from ips in daResponse.DescribeAddressesResult.Address select ips.PublicIp;

                //List of the instances which has public IP
                List<RunningInstance> publicIpInstances = new List<RunningInstance>();

                //Iterate over instances and check if they have public IP
                foreach (Reservation ri in response.DescribeInstancesResult.Reservation)                    
                    publicIpInstances.AddRange(ri.RunningInstance.Where(inst => publicIps.Contains(inst.IpAddress)));