blob: ad27375dd1d7190387c1464127e1e51879ff9882 [file] [log] [blame]
<?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.
-->
<chapter id="user-services-overview">
<title>User Services Overview</title>
<para>In addition to the physical and logical infrastructure of your cloud
and the &PRODUCT; software and servers, you also need a layer of user
services so that people can actually make use of the cloud. This means
not just a user UI, but a set of options and resources that users can
choose from, such as templates for creating virtual machines, disk
storage, and more. If you are running a commercial service, you will be
keeping track of what services and resources users are consuming and
charging them for that usage. Even if you do not charge anything for
people to use your cloud – say, if the users are strictly internal to your
organization, or just friends who are sharing your cloud – you can still
keep track of what services they use and how much of them.
</para>
<section id="offerings-and-templates">
<title>Service Offerings, Disk Offerings, Network Offerings, and Templates</title>
<para>A user creating a new instance can make a variety of choices about
its characteristics and capabilities. &PRODUCT; provides several ways to
present users with choices when creating a new instance:
</para>
<itemizedlist>
<listitem><para>Service Offerings, defined by the &PRODUCT; administrator,
provide a choice of CPU speed, number of CPUs, RAM size, tags on the
root disk, and other choices. See Creating a New Compute Offering.</para>
</listitem>
<listitem><para>Disk Offerings, defined by the &PRODUCT; administrator,
provide a choice of disk size and IOPS (Quality of Service) for primary
data storage. See Creating a New Disk Offering.</para>
</listitem>
<listitem><para>Network Offerings, defined by the &PRODUCT; administrator,
describe the feature set that is available to end users from the virtual
router or external networking devices on a given guest network. See
Network Offerings.</para>
</listitem>
<listitem><para>Templates, defined by the &PRODUCT; administrator or by
any &PRODUCT; user, are the base OS images that the user can choose
from when creating a new instance. For example, &PRODUCT; includes
CentOS as a template. See Working with Templates.</para>
</listitem>
</itemizedlist>
<para>In addition to these choices that are provided for users, there is
another type of service offering which is available only to the &PRODUCT;
root administrator, and is used for configuring virtual infrastructure
resources. For more information, see Upgrading a Virtual Router with
System Service Offerings.
</para>
</section>
</chapter>