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// Get IP Address

ipAddr = addr.getHostAddress()+"/10";

} catch (UnknownHostException e) {

35 }

// Create a range that you would like to populate.

ArrayList<String> ipRanges = new ArrayList<String>();

ipRanges.add(ipAddr);

// Open up port 22 for TCP traffic to the associated IP

// from above (e.g. ssh traffic).

ArrayList<IpPermission> ipPermissions = new ArrayList<IpPermission> ();

IpPermission ipPermission = new IpPermission();

45 ipPermission.setIpProtocol("tcp");

ipPermission.setFromPort(new Integer(22));

ipPermission.setToPort(new Integer(22));

ipPermission.setIpRanges(ipRanges);

ipPermissions.add(ipPermission);

try {

// Authorize the ports to the used.

AuthorizeSecurityGroupIngressRequest ingressRequest =

new AuthorizeSecurityGroupIngressRequest("GettingStartedGroup",ip

Permissions);

55 ec2.authorizeSecurityGroupIngress(ingressRequest);

} catch (AmazonServiceException ase) {

// Ignore because this likely means the zone has

// already been authorized.

System.out.println(ase.getMessage());

60 }

You can view this entire code sample in the CreateSecurityGroupApp.java code sample. Note you

only need to run this application once to create a new security group.

You can also create the security group using the AWS Toolkit for Eclipse. Go to the toolkit documentation

for more information.

Step 3: Submitting Your Spot Request

To submit a Spot request, you first need to determine the instance type, Amazon Machine Image (AMI),

and maximum bid price you want to use.You must also include the security group we configured previously,

so that you can log into the instance if desired.

There are several instance types to choose from; go to Amazon EC2 Instance Types for a complete list.

For this tutorial, we will use t1.micro, the cheapest instance type available. Next, we will determine the

type of AMI we would like to use.We'll use ami-8c1fece5, the most up-to-date Amazon Linux AMI available

when we wrote this tutorial. The latest AMI may change over time, but you can always determine the

latest version AMI by following these steps:

1. Log into the AWS Management Console, click the EC2 tab, and, from the EC2 Console Dashboard,

attempt to launch an instance.

Version v1.0.0

AWS SDK for Java Developer Guide

Tutorial: Amazon EC2 Spot Instances

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