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39 lines
3.5 KiB
XML
39 lines
3.5 KiB
XML
<?xml version='1.0' encoding='utf-8' ?>
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<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % BOOK_ENTITIES SYSTEM "cloudstack.ent">
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%BOOK_ENTITIES;
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]>
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<!-- Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<chapter id="user-services-overview">
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<title>User Services Overview</title>
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<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>
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<section id="offerings-and-templates">
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<title>Service Offerings, Disk Offerings, Network Offerings, and Templates</title>
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<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>
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<itemizedlist>
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<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>
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<listitem><para>Disk Offerings, defined by the &PRODUCT; administrator, provide a choice of disk size for primary data storage. See Creating a New Disk Offering.</para></listitem>
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<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>
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<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>
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</itemizedlist>
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<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>
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</section>
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</chapter> |