Gateway Instances in Rackspace Cloud¶
A Gateway Instance is a Rackspace Cloud Server that routes traffic between the public internet and any other Rackspace Cloud Servers that do not have a public IP. A Gateway Instance is typically a virtual network appliance, but could also be a Linux or Windows server.
In the diagram below, the web server and database server do not have PublicNet attached. Instead, their outbound internet access is routed through the Gateway Instance by using Cloud Networks. The web server also has public-facing services exposed by using a Cloud Load Balancer, which connects over ServiceNet.
Creating a Gateway Instance in Rackspace Cloud by using Orchestration (recommended)¶
The easiest way to create a Gateway Instance is by using these Cloud Orchestration templates that create the Gateway Instance and a Cloud Network with all needed configuration (the gateway IP and DNS Servers) at the same time.
To use the Cloud Orchestration template, copy the template to your clipboard, then navigate to the Cloud Control Panel and click Orchestration, then click Stack Templates. From that page, click Create Custom Template. Paste the template into the text box, then click Create Template and Launch Stack.
Fill in the stack details with your preferred information, such as administrative password, preferred IP scheme, and so on.