path: root/src/man/sssd-ipa.5.xml

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<!DOCTYPE reference PUBLIC "-//OASIS//DTD DocBook V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<reference>
<title>SSSD Manual pages</title>
<refentry>
    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/upstream.xml" />

    <refmeta>
        <refentrytitle>sssd-ipa</refentrytitle>
        <manvolnum>5</manvolnum>
        <refmiscinfo class="manual">File Formats and Conventions</refmiscinfo>
    </refmeta>

    <refnamediv id='name'>
        <refname>sssd-ipa</refname>
        <refpurpose>SSSD IPA provider</refpurpose>
    </refnamediv>

    <refsect1 id='description'>
        <title>DESCRIPTION</title>
        <para>
            This manual page describes the configuration of the IPA provider
            for
            <citerefentry>
                <refentrytitle>sssd</refentrytitle>
                <manvolnum>8</manvolnum>
            </citerefentry>.
            For a detailed syntax reference, refer to the <quote>FILE FORMAT</quote> section of the
            <citerefentry>
                <refentrytitle>sssd.conf</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> manual page.
        </para>
        <para>
            The IPA provider is a back end used to connect to an IPA server.
            (Refer to the freeipa.org web site for information about IPA servers.)
            This provider requires that the machine be joined to the IPA domain;
            configuration is almost entirely self-discovered and obtained
            directly from the server.
        </para>
        <para>
            The IPA provider accepts the same options used by the
            <citerefentry>
                <refentrytitle>sssd-ldap</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> identity provider and the
            <citerefentry>
                <refentrytitle>sssd-krb5</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> authentication provider with some exceptions described
            below.
        </para>
        <para>
            However, it is neither necessary nor recommended to set these options.
            IPA provider can also be used as an access and chpass provider. As an
            access provider it uses HBAC (host-based access control) rules. Please
            refer to freeipa.org for more information about HBAC. No configuration
            of access provider is required on the client side.
        </para>
        <para>
            The IPA provider will use the PAC responder if the Kerberos tickets
            of users from trusted realms contain a PAC. To make configuration
            easier the PAC responder is started automatically if the IPA ID
            provider is configured.
        </para>
    </refsect1>

    <refsect1 id='configuration-options'>
        <title>CONFIGURATION OPTIONS</title>
        <para>Refer to the section <quote>DOMAIN SECTIONS</quote> of the
            <citerefentry>
                <refentrytitle>sssd.conf</refentrytitle>
                <manvolnum>5</manvolnum>
            </citerefentry> manual page for details on the configuration of an SSSD domain.
            <variablelist>
                <varlistentry>
                    <term>ipa_domain (string)</term>
                    <listitem>
                        <para>
                            Specifies the name of the IPA domain.
                            This is optional. If not provided, the configuration
                            domain name is used.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_server, ipa_backup_server (string)</term>
                    <listitem>
                        <para>
                            The comma-separated list of IP addresses or hostnames of the
                            IPA servers to which SSSD should connect in
                            the order of preference. For more information
                            on failover and server redundancy, see the
                            <quote>FAILOVER</quote> section.
                            This is optional if autodiscovery is enabled.
                            For more information on service discovery, refer
                            to the <quote>SERVICE DISCOVERY</quote> section.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_hostname (string)</term>
                    <listitem>
                        <para>
                            Optional. May be set on machines where the
                            hostname(5) does not reflect the fully qualified
                            name used in the IPA domain to identify this host.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dyndns_update (boolean)</term>
                    <listitem>
                        <para>
                            Optional. This option tells SSSD to automatically
                            update the DNS server built into FreeIPA v2 with
                            the IP address of this client. The update is
                            secured using GSS-TSIG. The IP address of the IPA
                            LDAP connection is used for the updates, if it is
                            not otherwise specified by using the
                            <quote>dyndns_iface</quote> option.
                        </para>
                        <para>
                            NOTE: On older systems (such as RHEL 5), for this
                            behavior to work reliably, the default Kerberos
                            realm must be set properly in /etc/krb5.conf
                        </para>
                        <para>
                            NOTE: While it is still possible to use the old
                            <emphasis>ipa_dyndns_update</emphasis> option, users
                            should migrate to using <emphasis>dyndns_update</emphasis>
                            in their config file.
                        </para>
                        <para>
                            Default: false
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dyndns_ttl (integer)</term>
                    <listitem>
                        <para>
                            The TTL to apply to the client DNS record when updating it.
                            If dyndns_update is false this has no effect. This will
                            override the TTL serverside if set by an administrator.
                        </para>
                        <para>
                            NOTE: While it is still possible to use the old
                            <emphasis>ipa_dyndns_ttl</emphasis> option, users
                            should migrate to using <emphasis>dyndns_ttl</emphasis>
                            in their config file.
                        </para>
                        <para>
                            Default: 1200 (seconds)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dyndns_iface (string)</term>
                    <listitem>
                        <para>
                            Optional. Applicable only when dyndns_update
                            is true. Choose the interface whose IP address
                            should be used for dynamic DNS updates.
                        </para>
                        <para>
                            NOTE: While it is still possible to use the old
                            <emphasis>ipa_dyndns_iface</emphasis> option, users
                            should migrate to using <emphasis>dyndns_iface</emphasis>
                            in their config file.
                        </para>
                        <para>
                            Default: Use the IP address of the IPA LDAP connection
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_enable_dns_sites (boolean)</term>
                    <listitem>
                        <para>
                            Enables DNS sites - location based
                            service discovery.
                        </para>
                        <para>
                            If true and service discovery (see Service
                            Discovery paragraph at the bottom of the man page)
                            is enabled, then the SSSD will first attempt
                            location based discovery using a query that contains
                            "_location.hostname.example.com" and then fall back
                            to traditional SRV discovery. If the location based
                            discovery succeeds, the IPA servers located with
                            the location based discovery are treated as primary
                            servers and the IPA servers located using the
                            traditional SRV discovery are used as back up
                            servers
                        </para>
                        <para>
                            Default: false
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dyndns_refresh_interval (integer)</term>
                    <listitem>
                        <para>
                            How often should the back end perform periodic DNS update in
                            addition to the automatic update performed when the back end
                            goes online.
                            This option is optional and applicable only when dyndns_update
                            is true.
                        </para>
                        <para>
                            Default: 0 (disabled)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dyndns_update_ptr (bool)</term>
                    <listitem>
                        <para>
                            Whether the PTR record should also be explicitly
                            updated when updating the client's DNS records.
                            Applicable only when dyndns_update is true.
                        </para>
                        <para>
                            This option should be False in most IPA
                            deployments as the IPA server generates the
                            PTR records automatically when forward records
                            are changed.
                        </para>
                        <para>
                            Default: False (disabled)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dyndns_force_tcp (bool)</term>
                    <listitem>
                        <para>
                            Whether the nsupdate utility should default to using
                            TCP for communicating with the DNS server.
                        </para>
                        <para>
                            Default: False (let nsupdate choose the protocol)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_hbac_search_base (string)</term>
                    <listitem>
                        <para>
                            Optional. Use the given string as search base for
                            HBAC related objects.
                        </para>
                        <para>
                            Default: Use base DN
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_host_search_base (string)</term>
                    <listitem>
                        <para>
                            Optional. Use the given string as search base for
                            host objects.
                        </para>
                        <para>
                            See <quote>ldap_search_base</quote> for
                            information about configuring multiple search
                            bases.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>ldap_search_base</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_selinux_search_base (string)</term>
                    <listitem>
                        <para>
                            Optional. Use the given string as search base for
                            SELinux user maps.
                        </para>
                        <para>
                            See <quote>ldap_search_base</quote> for
                            information about configuring multiple search
                            bases.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>ldap_search_base</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_subdomains_search_base (string)</term>
                    <listitem>
                        <para>
                            Optional. Use the given string as search base for
                            trusted domains.
                        </para>
                        <para>
                            See <quote>ldap_search_base</quote> for
                            information about configuring multiple search
                            bases.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>cn=trusts,%basedn</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_master_domain_search_base (string)</term>
                    <listitem>
                        <para>
                            Optional. Use the given string as search base for
                            master domain object.
                        </para>
                        <para>
                            See <quote>ldap_search_base</quote> for
                            information about configuring multiple search
                            bases.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>cn=ad,cn=etc,%basedn</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_views_search_base (string)</term>
                    <listitem>
                        <para>
                            Optional. Use the given string as search base for
                            views containers.
                        </para>
                        <para>
                            See <quote>ldap_search_base</quote> for
                            information about configuring multiple search
                            bases.
                        </para>
                        <para>
                            Default: the value of
                            <emphasis>cn=views,cn=accounts,%basedn</emphasis>
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>krb5_validate (boolean)</term>
                    <listitem>
                        <para>
                            Verify with the help of krb5_keytab that the TGT
                            obtained has not been spoofed.
                        </para>
                        <para>
                            Default: true
                        </para>
                        <para>
                             Note that this default differs from the
                             traditional Kerberos provider back end.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>krb5_realm (string)</term>
                    <listitem>
                        <para>
                            The name of the Kerberos realm. This is optional and
                            defaults to the value of <quote>ipa_domain</quote>.
                        </para>
                        <para>
                            The name of the Kerberos realm has a special
                            meaning in IPA - it is converted into the base
                            DN to use for performing LDAP operations.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>krb5_canonicalize (boolean)</term>
                    <listitem>
                        <para>
                            Specifies if the host and user principal should be
                            canonicalized when connecting to IPA LDAP and also for AS
                            requests. This feature is available with MIT
                            Kerberos >= 1.7
                        </para>

                        <para>
                            Default: true
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>krb5_use_fast (string)</term>
                    <listitem>
                        <para>
                            Enables flexible authentication secure tunneling
                            (FAST) for Kerberos pre-authentication. The
                            following options are supported:
                        </para>
                        <para>
                            <emphasis>never</emphasis> use FAST.
                        </para>
                        <para>
                            <emphasis>try</emphasis> to use FAST. If the server
                            does not support FAST, continue the
                            authentication without it. This is
                            equivalent to not setting this option at all.
                        </para>
                        <para>
                            <emphasis>demand</emphasis> to use FAST. The
                            authentication fails if the server does not
                            require fast.
                        </para>
                        <para>
                            Default: try
                        </para>
                        <para>
                            NOTE: SSSD supports FAST only with
                            MIT Kerberos version 1.8 and later. If SSSD is used
                            with an older version of MIT Kerberos, using this
                            option is a configuration error.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_hbac_refresh (integer)</term>
                    <listitem>
                        <para>
                            The amount of time between lookups of the HBAC
                            rules against the IPA server. This will reduce the
                            latency and load on the IPA server if there are
                            many access-control requests made in a short
                            period.
                        </para>
                        <para>
                            Default: 5 (seconds)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_hbac_selinux (integer)</term>
                    <listitem>
                        <para>
                            The amount of time between lookups of the SELinux
                            maps against the IPA server. This will reduce the
                            latency and load on the IPA server if there are
                            many user login requests made in a short
                            period.
                        </para>
                        <para>
                            Default: 5 (seconds)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_hbac_treat_deny_as (string)</term>
                    <listitem>
                        <para>
                            This option specifies how to treat the deprecated
                            DENY-type HBAC rules. As of FreeIPA v2.1, DENY
                            rules are no longer supported on the server. All
                            users of FreeIPA will need to migrate their rules
                            to use only the ALLOW rules. The client will
                            support two modes of operation during this
                            transition period:
                        </para>
                        <para>
                            <emphasis>DENY_ALL</emphasis>: If any HBAC DENY
                            rules are detected, all users will be denied
                            access.
                        </para>
                        <para>
                            <emphasis>IGNORE</emphasis>: SSSD will ignore any
                            DENY rules. Be very careful with this option, as
                            it may result in opening unintended access.
                        </para>
                        <para>
                            Default: DENY_ALL
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>ipa_server_mode (boolean)</term>
                    <listitem>
                        <para>
                            This option should only be set by the IPA
                            installer.
                        </para>
                        <para>
                            The option denotes that the SSSD is running on
                            IPA server and should perform lookups of users
                            and groups from trusted domains differently.
                        </para>
                        <para>
                            Default: false
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry condition="with_autofs">
                    <term>ipa_automount_location (string)</term>
                    <listitem>
                        <para>
                            The automounter location this IPA client will be using
                        </para>
                        <para>
                            Default: The location named "default"
                        </para>
                        <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/autofs_restart.xml" />
                    </listitem>
                </varlistentry>
            </variablelist>
        </para>
        <refsect2 id='views'>
            <title>VIEWS AND OVERRIDES</title>
            <para>
                SSSD can handle views and overrides which are offered by
                FreeIPA 4.1 and later version. Since all paths and objectclasses
                are fixed on the server side there is basically no need to
                configure anything. For completeness the related options are
                listed here with their default values.
                <variablelist>
                    <varlistentry>
                        <term>ipa_view_class (string)</term>
                        <listitem>
                            <para>
                                Objectclass of the view container.
                            </para>
                            <para>
                                Default: nsContainer
                            </para>
                        </listitem>
                    </varlistentry>

                    <varlistentry>
                        <term>ipa_view_name (string)</term>
                        <listitem>
                            <para>
                                Name of the attribute holding the name of the
                                view.
                            </para>
                            <para>
                                Default: cn
                            </para>
                        </listitem>
                    </varlistentry>

                    <varlistentry>
                        <term>ipa_overide_object_class (string)</term>
                        <listitem>
                            <para>
                                Objectclass of the override objects.
                            </para>
                            <para>
                                Default: ipaOverrideAnchor
                            </para>
                        </listitem>
                    </varlistentry>

                    <varlistentry>
                        <term>ipa_anchor_uuid (string)</term>
                        <listitem>
                            <para>
                                Name of the attribute containing the reference
                                to the original object in a remote domain.
                            </para>
                            <para>
                                Default: ipaAnchorUUID
                            </para>
                        </listitem>
                    </varlistentry>

                    <varlistentry>
                        <term>ipa_user_override_object_class (string)</term>
                        <listitem>
                            <para>
                                Name of the objectclass for user overrides. It
                                is used to determine if the found override
                                object is related to a user or a group.
                            </para>
                            <para>
                                User overrides can contain attributes given by
                                <itemizedlist>
                                    <listitem>
                                        <para>ldap_user_name</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_user_uid_number</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_user_gid_number</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_user_gecos</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_user_home_directory</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_user_shell</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_user_ssh_public_key</para>
                                    </listitem>
                                </itemizedlist>
                            </para>
                            <para>
                                Default: ipaUserOverride
                            </para>
                        </listitem>
                    </varlistentry>

                    <varlistentry>
                        <term>ipa_group_override_object_class (string)</term>
                        <listitem>
                            <para>
                                Name of the objectclass for group overrides. It
                                is used to determine if the found override
                                object is related to a user or a group.
                            </para>
                            <para>
                                Group overrides can contain attributes given by
                                <itemizedlist>
                                    <listitem>
                                        <para>ldap_group_name</para>
                                    </listitem>
                                    <listitem>
                                        <para>ldap_group_gid_number</para>
                                    </listitem>
                                </itemizedlist>
                            </para>
                            <para>
                                Default: ipaGroupOverride
                            </para>
                        </listitem>
                    </varlistentry>
                </variablelist>
            </para>
        </refsect2>
    </refsect1>

    <refsect1 id='subdomains_provider'>
        <title>SUBDOMAINS PROVIDER</title>
        <para>
            The IPA subdomains provider behaves slightly differently
            if it is configured explicitly or implicitly.
        </para>
        <para>
            If the option 'subdomains_provider = ipa' is found in the
            domain section of sssd.conf, the IPA subdomains provider is
            configured explicitly, and all subdomain requests are sent to the
            IPA server if necessary.
        </para>
        <para>
            If the option 'subdomains_provider' is not set in the domain
            section of sssd.conf but there is the option 'id_provider = ipa',
            the IPA subdomains provider is configured implicitly. In this case,
            if a subdomain request fails and indicates that the server does not
            support subdomains, i.e. is not configured for trusts, the IPA
            subdomains provider is disabled. After an hour or after the IPA
            provider goes online, the subdomains provider is enabled again.
        </para>
    </refsect1>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/failover.xml" />

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/service_discovery.xml" />

    <refsect1 id='example'>
        <title>EXAMPLE</title>
        <para>
            The following example assumes that SSSD is correctly
            configured and example.com is one of the domains in the
            <replaceable>[sssd]</replaceable> section. This examples shows only
            the ipa provider-specific options.
        </para>
        <para>
<programlisting>
    [domain/example.com]
    id_provider = ipa
    ipa_server = ipaserver.example.com
    ipa_hostname = myhost.example.com
</programlisting>
        </para>
    </refsect1>

	<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="include/seealso.xml" />

</refentry>
</reference>