en-US/aws-ec2-introduction.xml

<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % BOOK_ENTITIES SYSTEM "cloudstack.ent">
%BOOK_ENTITIES;
]>

<!-- Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 "License"); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at
 
   http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
 under the License.
-->

<section id="aws-ec2-introduction">
  <title>Amazon Web Services Compatible Interface</title>
    <para>&PRODUCT; can translate Amazon Web Services (AWS) API calls to native &PRODUCT; API calls
    so that users can continue using existing AWS-compatible tools. This translation service runs as
    a separate web application in the same tomcat server as the management server of &PRODUCT;,
    listening on a different port. The Amazon Web Services (AWS) compatible interface provides the
    EC2 SOAP and Query APIs as well as the S3 REST API.</para> 
    <note>
      <para>This service was previously enabled by separate software called CloudBridge. It is now
      fully integrated with the &PRODUCT; management server. </para>
    </note>
    <warning>
      <para>The compatible interface for the EC2 Query API and the S3 API are Work In Progress. The S3 compatible API offers a way to store data on the management server file system, it is not an implementation of the S3 backend.</para>
    </warning>
    <para>Limitations</para>
    <itemizedlist>
      <listitem>
        <para>Supported only in zones that use basic networking.</para>
      </listitem>
      <listitem>
        <para>Available in fresh installations of &PRODUCT;. Not available through upgrade of previous versions.</para>
      </listitem>
      <listitem>
        <para>Features such as Elastic IP (EIP) and Elastic Load Balancing (ELB) are only available in an infrastructure
        with a Citrix NetScaler device. Users accessing a Zone with a NetScaler device will need to use a 
        NetScaler-enabled network offering (DefaultSharedNetscalerEIP and ELBNetworkOffering).</para>
      </listitem>
    </itemizedlist>
</section>