Release: Amazon Virtual Private Cloud on 2010-03-22
New AWS SDK for Java.
Release Date: March 22, 2010
Created On: March 22, 2010
Last Updated: October 09, 2017
New Features
| Feature | Description |
|---|---|
| AWS SDK for Java | AWS now provides a Java SDK that covers Amazon VPC and other AWS products. The SDK provides basic functions not included in the Amazon VPC API, such as request authentication, request retries, and error handling. For more information about the AWS SDK for Java, go to http://aws.amazon.com/sdkforjava. |
Known Issues
| Issue | Description |
|---|---|
| Current Limits |
During the Amazon VPC public beta:
|
| No Support for Amazon VPC in the AWS Management Console | You can't use the AWS Management Console to execute any of the Amazon VPC API operations or launch instances into a VPC. Any instances you launch (with the command line tools or API) appear in your list of running instances that the console displays. However, the console doesn't display the IP address, subnet ID, or VPC ID of those instances. Also the console incorrectly displays "Error" or a hyphen in the Security Group field for those instances. |
| No Direct Internet Access from a VPC | Any VPC traffic to/from the Internet must currently route through the established VPN connection and through your existing IT infrastructure to the public Internet. You are currently unable to send/receive Internet traffic directly from your VPC. |
| Unsupported AWS Services Only Accessible Via VPN Connection | Amazon VPC allows you to deploy Amazon EC2 instances within your VPC. Resources provided by services such as Amazon S3, Amazon SQS, Amazon SimpleDB and others can't currently be deployed within your VPC, and, as such, are only accessible to resources within your VPC via the VPN connection, through your network, and to the respective service's public endpoint. You may need to create firewall exceptions to allow cloud-based instances to access the Internet (and possibly NAT) from your existing IT infrastructure. |
| Broadcast and Multicast Unsupported in a VPC | You are unable to employ either broadcast or multicast within your VPC. |
| Increased Latency in Bundling Linux/UNIX AMIs | You may experience increased latency in bundling Linux/UNIX AMIs within Amazon VPC. Such bundles are transferred from the instance, through the VPN connection, through your network and to the public Amazon S3 endpoint. You may need to create firewall exceptions to allow cloud-based instances to access the Internet (and possibly NAT) from your existing IT infrastructure. |
| Service Currently Available in One Availability Zone | Currently your VPC, subnets, VPN gateway, and any instances you launch in the VPC must all reside in a single Availability Zone in the us-east-1 region. |
| No Capacity Guarantee for Amazon EC2 Reserved Instances | Reserved Instances (with their discounted rates) are available; however, there's currently no capacity guarantee for Reserved Instances in a VPC. |
| Traffic Sent to Overlapping IP Address Ranges Is Dropped | If your VPC's IP address range overlaps with an IP address range in use within your existing IT infrastructure, Amazon VPC will drop any traffic to said range. To avoid this, create your VPC so it does not overlap with current or expected future subnets in your network. |
| Ordering of DHCP Option Values Not Guaranteed | When you specify DHCP options, some options (e.g., DNS servers) accept multiple values. The ordering of these values is not guaranteed. After creating the options, you should use the DescribeDhcpOptions operation (or the ec2-describe-dhcp-options command) to confirm the order in which the options will be delivered to instances. |
| AWS Capabilities Currently Unavailable within Amazon VPC | The following AWS services and Amazon EC2 features are currently not available for use with a VPC:
|
| Configuration Changes for Windows Server 2008 AMIs | If you've created your own Windows Server 2008 AMIs from Amazon's Windows Server 2008 base images prior to v1.02, you need to make a couple of changes to your existing configuration in order to activate your instances' licensing when launching in a VPC. In some cases, you might need to make changes for v1.02 as well, depending on your needs.
Manually Locate VPC Activation Endpoints If you want to launch a Windows Server 2008 AMI in a VPC, you must manually set the Windows Activation endpoint in your instance if either of the following conditions are true:
The activation IP address for VPC instances are:
To set the endpoint manually, execute the following commands from the command line: Slmgr.vbs /skms 169.254.169.250 Slmgr.vbs /ato Update Ec2Config Service Settings If you're using an AMI that was created from an Amazon public Windows Server 2008 image prior to v1.02, then you should also make a change to one of the Activation Settings files in the Ec2Config service to reflect the new discovery hierarchy, which includes the preceding endpoints for VPC activation. To make this change, overwrite the file
|