189 lines
9.4 KiB
XML
189 lines
9.4 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<chapter 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" version="5.0"
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xml:id="ch-identity-mgmt-config">
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<?dbhtml stop-chunking?>
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<title>Identity Management</title>
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<para>The default identity management system for OpenStack is the
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OpenStack Identity Service, code-named Keystone. Once Identity is
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installed, it is configured via a primary configuration file
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(<filename>etc/keystone.conf</filename>), possibly a separate
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logging configuration file, and initializing data into keystone
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using the command line client.</para>
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<section xml:id="keystone-admin-concepts">
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<title>Identity Service Concepts</title>
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<xi:include href="../common/section_keystone-concepts-user-management.xml"/>
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<xi:include href="../common/section_keystone-concepts-service-management.xml"/>
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<xi:include href="../common/section_keystone-concepts-group-management.xml"/>
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</section>
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<section xml:id="user-crud">
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<title>User CRUD</title>
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<para>Keystone provides a user CRUD filter that can be added to
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the public_api pipeline. This user crud filter enables users to
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use a HTTP PATCH to change their own password. To enable this
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extension you should define a
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<literal>user_crud_extension</literal> filter, insert it after
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the <literal>*_body</literal> middleware and before the
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<literal>public_service</literal> app in the public_api WSGI
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pipeline in <filename>keystone.conf</filename> e.g.:</para>
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<programlisting language="ini"><?db-font-size 75%?>[filter:user_crud_extension]
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paste.filter_factory = keystone.contrib.user_crud:CrudExtension.factory
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[pipeline:public_api]
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pipeline = stats_monitoring url_normalize token_auth admin_token_auth xml_body json_body debug ec2_extension user_crud_extension public_service</programlisting>
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<para>Each user can then change their own password with a HTTP
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PATCH</para>
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<screen><prompt>$</prompt> <userinput>curl -X PATCH http://localhost:5000/v2.0/OS-KSCRUD/users/<userid> -H "Content-type: application/json" \
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-H "X_Auth_Token: <authtokenid>" -d '{"user": {"password": "ABCD", "original_password": "DCBA"}}'</userinput></screen>
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<para>In addition to changing their password all of the users
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current tokens are deleted (if the back end is kvs or
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sql).</para>
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</section>
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<section xml:id="keystone-logging">
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<title>Logging</title>
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<para>You configure logging externally to the rest of Identity.
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The file specifying the logging configuration is in the
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<literal>[DEFAULT]</literal> section of the
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<filename>keystone.conf</filename> file under
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<literal>log_config</literal>. To route logging through
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syslog, set <literal>use_syslog=true</literal> option in the
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<literal>[DEFAULT]</literal> section.</para>
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<para>A sample logging file is available with the project in the
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directory <filename>etc/logging.conf.sample</filename>. Like
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other OpenStack projects, Identity uses the python logging
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module, which includes extensive configuration options for
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choosing the output levels and formats.</para>
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<para>Review the <filename>etc/keystone.conf</filename> sample
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configuration files distributed with keystone for example
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configuration files for each server application.</para>
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<para>For services which have separate paste-deploy ini file, you
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can configure auth_token middleware in [keystone_authtoken]
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section in the main config file, such as
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<filename>nova.conf</filename>. For example in Compute, you
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can remove the middleware parameters from
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<filename>api-paste.ini</filename>, as follows:</para>
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<programlisting language="ini"><?db-font-size 75%?>[filter:authtoken]
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paste.filter_factory =
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keystoneclient.middleware.auth_token:filter_factory</programlisting>
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<para>And set the following values in
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<filename>nova.conf</filename>, as follows:</para>
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<programlisting language="ini"><?db-font-size 75%?>[DEFAULT]
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...
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auth_strategy=keystone
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[keystone_authtoken]
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auth_host = 127.0.0.1
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auth_port = 35357
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auth_protocol = http
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auth_uri = http://127.0.0.1:5000/
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admin_user = admin
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admin_password = SuperSekretPassword
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admin_tenant_name = service</programlisting>
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<note>
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<para>Middleware parameters in paste config take priority. You
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must remove them to use values in [keystone_authtoken]
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section.</para>
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</note>
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</section>
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<section xml:id="monitoring">
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<title>Monitoring</title>
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<para>Keystone provides some basic request/response monitoring
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statistics out of the box.</para>
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<para>Enable data collection by defining a
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<literal>stats_monitoring</literal> filter and including it at
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the beginning of any desired WSGI pipelines:</para>
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<programlisting language="ini"><?db-font-size 75%?>[filter:stats_monitoring]
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paste.filter_factory = keystone.contrib.stats:StatsMiddleware.factory
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[pipeline:public_api]
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pipeline = stats_monitoring [...] public_service</programlisting>
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<para>Enable the reporting of collected data by defining a
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<literal>stats_reporting</literal> filter and including it
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near the end of your <literal>admin_api</literal> WSGI pipeline
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(After <literal>*_body</literal> middleware and before
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<literal>*_extension</literal> filters is recommended):</para>
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<programlisting language="ini"><?db-font-size 75%?>[filter:stats_reporting]
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paste.filter_factory = keystone.contrib.stats:StatsExtension.factory
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[pipeline:admin_api]
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pipeline = [...] json_body stats_reporting ec2_extension [...] admin_service</programlisting>
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<para>Query the admin API for statistics using:</para>
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<screen><prompt>$</prompt> <userinput>curl -H 'X-Auth-Token: ADMIN' http://localhost:35357/v2.0/OS-STATS/stats</userinput></screen>
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<para>Reset collected data using:</para>
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<screen><prompt>$</prompt> <userinput>curl -H 'X-Auth-Token: ADMIN' -X DELETE \
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http://localhost:35357/v2.0/OS-STATS/stats</userinput></screen>
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</section>
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<section xml:id="running-keystone">
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<title>Start the Identity Service</title>
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<para>To start the services for the Identity Service, run the
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following command:</para>
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<screen><prompt>$</prompt> <userinput>keystone-all</userinput></screen>
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<para>This command starts two wsgi.Server instances configured by
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the <filename>keystone.conf</filename> file as described
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previously. One of these wsgi servers is
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<literal>admin</literal> (the administration API) and the
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other is <literal>main</literal> (the primary/public API
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interface). Both run in a single process.</para>
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</section>
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<section xml:id="example-usage">
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<title>Example usage</title>
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<para>The <literal>keystone</literal> client is set up to expect
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commands in the general form of <literal>keystone</literal>
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<literal>command</literal>
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<literal>argument</literal>, followed by flag-like keyword
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arguments to provide additional (often optional) information.
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For example, the command <literal>user-list</literal> and
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<literal>tenant-create</literal> can be invoked as
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follows:</para>
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<programlisting language="bash"><?db-font-size 65%?># Using token auth env variables
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export SERVICE_ENDPOINT=http://127.0.0.1:5000/v2.0/
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export SERVICE_TOKEN=secrete_token
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keystone user-list
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keystone tenant-create --name=demo
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# Using token auth flags
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keystone --token=secrete --endpoint=http://127.0.0.1:5000/v2.0/ user-list
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keystone --token=secrete --endpoint=http://127.0.0.1:5000/v2.0/ tenant-create --name=demo
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# Using user + password + tenant_name env variables
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export OS_USERNAME=admin
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export OS_PASSWORD=secrete
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export OS_TENANT_NAME=admin
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keystone user-list
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keystone tenant-create --name=demo
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# Using user + password + tenant_name flags
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keystone --username=admin --password=secrete --tenant_name=admin user-list
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keystone --username=admin --password=secrete --tenant_name=admin tenant-create --name=demo</programlisting>
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</section>
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<section xml:id="auth-token-middleware-with-username-and-password">
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<title>Auth-Token middleware with user name and password</title>
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<para>It is also possible to configure the Identity Service
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Auth-Token middleware using the <option>admin_user</option> and
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<option>admin_password</option> options. When using the
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<option>admin_user</option> and
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<option>admin_password</option> options the
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<option>admin_token</option> parameter is optional. If
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<option>admin_token</option> is specified it is used only if
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the specified token is still valid.</para>
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<para>Here is an example paste config filter that makes use of the
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<option>admin_user</option> and
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<option>admin_password</option> parameters:</para>
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<programlisting language="ini"><?db-font-size 75%?>[filter:authtoken]
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paste.filter_factory = keystoneclient.middleware.auth_token:filter_factory
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service_port = 5000
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service_host = 127.0.0.1
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auth_port = 35357
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auth_host = 127.0.0.1
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auth_token = 012345SECRET99TOKEN012345
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admin_user = admin
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admin_password = keystone123</programlisting>
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<para>It should be noted that when using this option an admin
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tenant/role relationship is required. The admin user is granted
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access to the Admin role on the admin tenant.</para>
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</section>
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<?hard-pagebreak?>
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<xi:include href="../common/section_identity-troubleshooting.xml"/>
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</chapter>
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