User guide

}
// 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
// Set up the availability zone to use. Note we could retrieve the
// availability zones using the ec2.describeAvailabilityZones() API. For
// this demo we will just use us-east-1a.
SpotPlacement placement = new SpotPlacement("us-east-1b");
40
launchSpecification.setPlacement(placement);
// Add the launch specification.
requestRequest.setLaunchSpecification(launchSpecification);
45
// Call the RequestSpotInstance API.
RequestSpotInstancesResult requestResult = ec2.requestSpotInstances(re
questRequest);
Lastly, you can specify a placement group if you are using High Performance Computing (HPC) Spot
instances, such as cluster compute instances or cluster GPU instances. Placement groups provide you
with lower latency and high-bandwidth connectivity between the instances. An example of how to set a
placement group follows.
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());
Version v1.0.0
53
AWS SDK for Java Developer Guide
Tutorial: Advanced Amazon EC2 Spot Request
Management