3ca32b8434
Change capitalization as discussed on openstack-docs mailing list. Change-Id: I2ad81bffbd59bdd8b908664bb0a1ee16da1bf7ae
119 lines
6.4 KiB
XML
119 lines
6.4 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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version="5.0"
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xml:id="keystone-user-management">
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<title>User management</title>
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<para>The main components of Identity user management are:</para>
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<itemizedlist>
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<listitem>
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<para><emphasis role="bold">User</emphasis>. Represents a
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human user. Has associated information such as user
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name, password, and email. This example creates a user
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named <literal>alice</literal>:</para>
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<screen><prompt>$</prompt> <userinput>openstack user create --password-prompt --email alice@example.com alice</userinput></screen>
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</listitem>
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<listitem>
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<para><emphasis role="bold">Project</emphasis>. A tenant,
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group, or organization. When you make requests to
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OpenStack services, you must specify a project. For
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example, if you query the Compute service for a list
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of running instances, you get a list of all running
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instances in the project that you specified in your
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query. This example creates a project named
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<literal>acme</literal>:</para>
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<screen><prompt>$</prompt> <userinput>openstack project create acme</userinput></screen>
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</listitem>
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<listitem>
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<para><emphasis role="bold">Domain</emphasis>. Defines
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administrative boundaries for the management of Identity
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entities. A domain may represent an individual, company, or
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operator-owned space. It is used for exposing administrative
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activities directly to the system users.</para>
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<para>A domain is a collection of projects and users. Users may
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be given a domain's administrator role. A domain
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administrator may create projects, users, and groups within a
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domain and assign roles to users and groups.</para>
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<para>This example creates a domain named <literal>emea</literal>:
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</para>
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<screen><prompt>$</prompt> <userinput>openstack domain create emea</userinput></screen>
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</listitem>
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<listitem>
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<para><emphasis role="bold">Role</emphasis>. Captures the
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operations that a user can perform in a given tenant.</para>
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<para>This example creates a role named
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<literal>compute-user</literal>:</para>
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<screen><prompt>$</prompt> <userinput>openstack role create compute-user</userinput></screen>
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<note>
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<para>Individual services, such as Compute and the
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Image service, assign meaning to roles. In the
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Identity Service, a role is simply a name.</para>
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</note>
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</listitem>
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</itemizedlist>
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<?hard-pagebreak?>
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<para>The Identity Service assigns a tenant and a role to a user.
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You might assign the <literal>compute-user</literal> role to
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the <literal>alice</literal> user in the
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<literal>acme</literal> tenant:</para>
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<screen><prompt>$</prompt> <userinput>openstack user list</userinput>
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<computeroutput>+--------+-------+
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| ID | Name |
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+--------+-------+
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| 892585 | alice |
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+--------+-------+</computeroutput></screen>
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<screen><prompt>$</prompt> <userinput>openstack role list</userinput>
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<computeroutput>+--------+---------------+
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| ID | Name |
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+--------+---------------+
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| 9a764e | compute-user |
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+--------+---------------+</computeroutput></screen>
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<screen><prompt>$</prompt> <userinput>openstack project list</userinput>
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<computeroutput>+--------+--------------------+
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| ID | Name |
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+--------+--------------------+
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| 6b8fd2 | acme |
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+--------+--------------------+</computeroutput></screen>
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<screen><prompt>$</prompt> <userinput>openstack role add --project 6b8fd2 --user 892585 9a764e</userinput> </screen>
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<para>A user can have different roles in different tenants. For
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example, Alice might also have the <literal>admin</literal>
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role in the <literal>Cyberdyne</literal> tenant. A user can
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also have multiple roles in the same tenant.</para>
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<para>The
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<filename>/etc/<replaceable>[SERVICE_CODENAME]</replaceable>/policy.json</filename>
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file controls the tasks that users can perform for a given
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service. For example,
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<filename>/etc/nova/policy.json</filename> specifies the
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access policy for the Compute service,
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<filename>/etc/glance/policy.json</filename> specifies the
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access policy for the Image service, and
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<filename>/etc/keystone/policy.json</filename> specifies
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the access policy for the Identity Service.</para>
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<para>The default <filename>policy.json</filename> files in the
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Compute, Identity, and Image service recognize only the
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<literal>admin</literal> role: all operations that do not
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require the <literal>admin</literal> role are accessible by
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any user that has any role in a tenant.</para>
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<para>If you wish to restrict users from performing operations in,
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say, the Compute service, you need to create a role in the
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Identity Service and then modify
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<filename>/etc/nova/policy.json</filename> so that this
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role is required for Compute operations.</para>
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<?hard-pagebreak?>
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<para>For example, this line in
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<filename>/etc/nova/policy.json</filename> specifies that
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there are no restrictions on which users can create volumes:
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if the user has any role in a tenant, they can create volumes
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in that tenant.</para>
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<programlisting language="json">"volume:create": "",</programlisting>
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<para>To restrict creation of volumes to users who had the
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<literal>compute-user</literal> role in a particular
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tenant, you would add <literal>"role:compute-user"</literal>,
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like so:</para>
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<programlisting language="json">"volume:create": "role:compute-user",</programlisting>
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<para>To restrict all Compute service requests to require this
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role, the resulting file would look like:</para>
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<programlisting language="json"><xi:include href="../common/samples/restrict_roles2.json" parse="text"/></programlisting>
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</section>
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