User guide

Troubleshooting

If you encounter issues with the session manager, the first place to look is in catalina.out. If you have

access to the Tomcat installation, you can go directly to this log file and look for any error messages from

the session manager. If you're using Elastic Beanstalk, you can view the environment logs with the AWS

Management Console or the AWS Toolkit for Eclipse.

Limitations

The session manager does not support session locking.Therefore, applications that use many concurrent

AJAX calls to manipulate session data may not be appropriate for use with the session manager, due to

race conditions on session data writes and saves back to the data store.

Programming Amazon EC2 with the AWS SDK

for Java

This section provides information specific to programming Amazon EC2 with the SDK for Java.

Topics

• Tutorial: Starting an EC2 Instance (p. 26)

• Using IAM Roles to Grant Access to AWS Resources on Amazon EC2 (p. 30)

• Tutorial: Amazon EC2 Spot Instances (p. 35)

• Tutorial: Advanced Amazon EC2 Spot Request Management (p. 44)

Tutorial: Starting an EC2 Instance

This tutorial demonstrates how to use the AWS SDK for Java to start an EC2 instance.

Prerequisites

Before you begin, be sure that you have created an AWS account and that you have set up your AWS

credentials. For more information, see Getting Started (p. 4).

Tasks

• Create an Amazon EC2 Client Using the SDK for Java (p. 26)

• Create an Amazon EC2 Security Group (p. 27)

• Create a Key Pair (p. 29)

• Run an Amazon EC2 Instance (p. 29)

Create an Amazon EC2 Client Using the SDK for Java

Create an Amazon EC2 client in order to manage your EC2 resources, such as instances and security

groups.

To create and initialize an Amazon EC2 client

1. Create and initialize an AWSCredentials instance. Specify the AwsCredentials.properties file

you created, as follows:

Version v1.0.0

AWS SDK for Java Developer Guide

Amazon EC2