User guide

interruption or termination. We've inserted new code in the following example that shows how to enable
this scenario.
In the added code, we create a BlockDeviceMapping object and set its associated Elastic Block Storage
(EBS) to an EBS object that we've configured to not be deleted if the Spot Instance is terminated. We
then add this BlockDeviceMapping to the ArrayList of mappings that we include in the launch
specification.
1
// Retrieves the credentials from an AWSCredentials.properties file.
AWSCredentials credentials = null;
try {
5 credentials = new PropertiesCredentials(
GettingStartedApp.class.getResourceAsStream("AwsCredentials.proper
ties"));
} catch (IOException e1) {
System.out.println("Credentials were not properly entered into AwsCre
dentials.properties.");
System.out.println(e1.getMessage());
10 System.exit(-1);
}
// Create the AmazonEC2Client object so we can call various APIs.
AmazonEC2 ec2 = new AmazonEC2Client(credentials);
15
// Initializes a Spot Instance Request
RequestSpotInstancesRequest requestRequest = new RequestSpotInstances
Request();
// Request 1 x t1.micro instance with a bid price of $0.03.
20 requestRequest.setSpotPrice("0.03");
requestRequest.setInstanceCount(Integer.valueOf(1));
// Set up the specifications of the launch. This includes the instance
// type (e.g. t1.micro) and the latest Amazon Linux AMI id available.
25 // Note, you should always use the latest Amazon Linux AMI id or another
// of your choosing.
LaunchSpecification launchSpecification = new LaunchSpecification();
launchSpecification.setImageId("ami-8c1fece5");
launchSpecification.setInstanceType("t1.micro");
30
// Add the security group to the request.
ArrayList<String> securityGroups = new ArrayList<String>();
securityGroups.add("GettingStartedGroup");
launchSpecification.setSecurityGroups(securityGroups);
35
// Create the block device mapping to describe the root partition.
BlockDeviceMapping blockDeviceMapping = new BlockDeviceMapping();
blockDeviceMapping.setDeviceName("/dev/sda1");
40 // Set the delete on termination flag to false.
EbsBlockDevice ebs = new EbsBlockDevice();
ebs.setDeleteOnTermination(Boolean.FALSE);
blockDeviceMapping.setEbs(ebs);
45 // Add the block device mapping to the block list.
ArrayList<BlockDeviceMapping> blockList = new ArrayList<BlockDeviceMap
ping>();
Version v1.0.0
55
AWS SDK for Java Developer Guide
Tutorial: Advanced Amazon EC2 Spot Request
Management