path: root/src/man/sssd.conf.5.xml

<?xml version="1.0" encoding="UTF-8"?>
<!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.conf</refentrytitle>
        <manvolnum>5</manvolnum>
        <refmiscinfo class="manual">File Formats and Conventions</refmiscinfo>
    </refmeta>

    <refnamediv id='name'>
        <refname>sssd.conf</refname>
        <refpurpose>the configuration file for SSSD</refpurpose>
    </refnamediv>

    <refsect1 id='file-format'>
        <title>FILE FORMAT</title>

        <para>
            The file has an ini-style syntax and consists of sections and
            parameters. A section begins with the name of the section in
            square brackets and continues until the next section begins. An
            example of section with single and multi-valued parameters:
            <programlisting>
                <replaceable>[section]</replaceable>
                <replaceable>key</replaceable> = <replaceable>value</replaceable>
                <replaceable>key2</replaceable> = <replaceable>value2,value3</replaceable>
            </programlisting>
        </para>

        <para>
            The data types used are string (no quotes needed), integer
            and bool (with values of <quote>TRUE/FALSE</quote>).
        </para>

        <para>
            A line comment starts with a hash sign (<quote>#</quote>) or a
            semicolon (<quote>;</quote>)
        </para>

        <para>
            All sections can have an optional
            <replaceable>description</replaceable> parameter. Its function
            is only as a label for the section.
        </para>

        <para>
            <filename>sssd.conf</filename> must be a regular file, owned by
            root and only root may read from or write to the file.
        </para>
    </refsect1>

    <refsect1 id='special-sections'>
        <title>SPECIAL SECTIONS</title>

        <refsect2 id='services'>
            <title>The [sssd] section</title>
            <para>
                Individual pieces of SSSD functionality are provided by special
                SSSD services that are started and stopped together with SSSD.
                The services are managed by a special service frequently called
                <quote>monitor</quote>. The <quote>[sssd]</quote> section is used
                to configure the monitor as well as some other important options
                like the identity domains.
                <variablelist>
                    <title>Section parameters</title>
                    <varlistentry>
                        <term>config_file_version (integer)</term>
                        <listitem>
                            <para>
                                Indicates what is the syntax of the config
                                file. SSSD 0.6.0 and later use version 2.
                            </para>
                        </listitem>
                    </varlistentry>
                    <varlistentry>
                        <term>services</term>
                        <listitem>
                            <para>
                                Comma separated list of services that are
                                started when sssd itself starts.
                            </para>
                            <para>
                                Supported services: nss, pam
                            </para>
                        </listitem>
                    </varlistentry>
                    <varlistentry>
                        <term>reconnection_retries (integer)</term>
                        <listitem>
                            <para>
                                Number of times services should attempt to
                                reconnect in the event of a Data Provider
                                crash or restart before they give up
                            </para>
                            <para>
                                Default: 3
                            </para>
                        </listitem>
                    </varlistentry>
                    <varlistentry>
                        <term>domains</term>
                        <listitem>
                            <para>
                                A domain is a database containing user
                                information. SSSD can use more domains
                                at the same time, but at least one
                                must be configured or SSSD won't start.
                                This parameter described the list of domains
                                in the order you want them to be queried.
                            </para>
                        </listitem>
                    </varlistentry>
                    <varlistentry>
                        <term>re_expression (string)</term>
                        <listitem>
                            <para>
                                Regular expression that describes how to parse the string
                                containing user name and domain into these components.
                            </para>
                            <para>
                                Default: <quote>(?P&lt;name&gt;[^@]+)@?(?P&lt;domain&gt;[^@]*$)</quote>
                                which translates to "the name is everything up to the
                                <quote>@</quote> sign, the domain everything after that"
                            </para>
                            <para>
                                PLEASE NOTE: the support for non-unique named
                                subpatterns is not available on all plattforms
                                (e.g. RHEL5 and SLES10). Only plattforms with
                                libpcre version 7 or higher can support non-unique
                                named subpatterns.
                            </para>
                            <para>
                                PLEASE NOTE ALSO: older version of libpcre only
                                support the Python syntax (?P&lt;name&gt;) to label
                                subpatterns.
                            </para>
                        </listitem>
                    </varlistentry>
                    <varlistentry>
                        <term>full_name_format (string)</term>
                        <listitem>
                            <para>
                                A <citerefentry>
                                    <refentrytitle>printf</refentrytitle>
                                    <manvolnum>3</manvolnum>
                                </citerefentry>-compatible format that describes how to
                                translate a (name, domain) tuple into a fully qualified
                                name.
                            </para>
                            <para>
                                Default: <quote>%1$s@%2$s</quote>.
                            </para>
                        </listitem>
                    </varlistentry>
                </variablelist>
            </para>
        </refsect2>

    </refsect1>

    <refsect1 id='services-sections'>
        <title>SERVICES SECTIONS</title>
        <para>
            Settings that can be used to configure different services
            are described in this section. They should reside in the
            [<replaceable>$NAME</replaceable>] section, for example,
            for NSS service, the section would be <quote>[nss]</quote>
        </para>

        <refsect2 id='general'>
            <title>General service configuration options</title>
            <para>
                These options can be used to configure any service.
            </para>
            <variablelist>
                <varlistentry>
                    <term>debug_level (integer)</term>
                    <listitem>
                        <para>
                            Sets the debug level for the service. The
                            value can be in range from 0 (only critical
                            messages) to 10 (very verbose).
                        </para>
                        <para>
                            Default: 0
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>debug_timestamps (bool)</term>
                    <listitem>
                        <para>
                            Add a timestamp to the debug messages
                        </para>
                        <para>
                            Default: true
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>reconnection_retries (integer)</term>
                    <listitem>
                        <para>
                            Number of times services should attempt to
                            reconnect in the event of a Data Provider
                            crash or restart before they give up
                        </para>
                        <para>
                            Default: 3
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>command (string)</term>
                    <listitem>
                        <para>
                            By default, the executable
                            representing this service is called
                            <command>sssd_${service_name}</command>.
                            This directive allows to change the executable
                            name for the service. In the vast majority of
                            configurations, the default values should suffice.
                        </para>
                        <para>
                            Default: <command>sssd_${service_name}</command>
                        </para>
                    </listitem>
                </varlistentry>
            </variablelist>
        </refsect2>

        <refsect2 id='NSS'>
            <title>NSS configuration options</title>
            <para>
                These options can be used to configure the
                Name Service Switch (NSS) service.
            </para>
            <variablelist>
                <varlistentry>
                    <term>enum_cache_timeout (integer)</term>
                    <listitem>
                        <para>
                            How many seconds should nss_sss cache enumerations
                            (requests for info about all users)
                        </para>
                        <para>
                            Default: 120
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>entry_cache_nowait_percentage (integer)</term>
                    <listitem>
                        <para>
                            The entry cache can be set to automatically update
                            entries in the background if they are requested
                            beyond a percentage of the entry_cache_timeout
                            value for the domain.
                        </para>
                        <para>
                            For example, if the domain's entry_cache_timeout
                            is set to 30s and entry_cache_nowait_percentage is
                            set to 50 (percent), entries that come in after 15
                            seconds past the last cache update will be
                            returned immediately, but the SSSD will go and
                            update the cache on its own, so that future
                            requests will not need to block waiting for a
                            cache update.
                        </para>
                        <para>
                            Valid values for this option are 0-99 and
                            represent a percentage of the entry_cache_timeout
                            for each domain. For performance reasons, this
                            percentage will never reduce the nowait timeout to
                            less than 10 seconds.
                            (0 disables this feature)
                        </para>
                        <para>
                            Default: 0
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>entry_negative_timeout (integer)</term>
                    <listitem>
                        <para>
                            Specifies for how long nss_sss should cache
                            negative cache hits (that is, queries for
                            invalid database entries, like nonexistent ones)
                            before asking the back end again.
                        </para>
                        <para>
                            Default: 15
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>filter_users, filter_groups (string)</term>
                    <listitem>
                        <para>
                            Exclude certain users from being fetched from the sss
                            NSS database. This is particulary useful for system
                            accounts. This option can also be set per-domain or
                            include fully-qualified names to filter only users from
                            the particular domain.
                        </para>
                        <para>
                            Default: root
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>filter_users_in_groups (bool)</term>
                    <listitem>
                        <para>
                            If you want filtered user still be group members
                            set this option to false.
                        </para>
                        <para>
                            Default: true
                        </para>
                    </listitem>
                </varlistentry>
            </variablelist>
        </refsect2>
        <refsect2 id='PAM'>
            <title>PAM configuration options</title>
            <para>
                These options can be used to configure the
                Pluggable Authentication Module (PAM) service.
            </para>
            <variablelist>
                <varlistentry>
                    <term>offline_credentials_expiration (integer)</term>
                    <listitem>
                        <para>
                            If the authentication provider is offline, how
                            long should we allow cached logins (in days since
                            the last successful online login).
                        </para>
                        <para>
                            Default: 0 (No limit)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>offline_failed_login_attempts (integer)</term>
                    <listitem>
                        <para>
                            If the authentication provider is offline, how
                            many failed login attempts are allowed.
                        </para>
                        <para>
                            Default: 0 (No limit)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>offline_failed_login_delay (integer)</term>
                    <listitem>
                        <para>
                            The time in minutes which has to pass after
                            offline_failed_login_attempts has been reached
                            before a new login attempt is possible.
                        </para>
                        <para>
                            If set to 0 the user cannot authenticate offline if
                            offline_failed_login_attempts has been reached. Only
                            a successful online authentication can enable
                            enable offline authentication again.
                        </para>
                        <para>
                            Default: 5
                        </para>
                    </listitem>
                </varlistentry>
            </variablelist>
        </refsect2>
    </refsect1>

    <refsect1 id='domain-sections'>
        <title>DOMAIN SECTIONS</title>
        <para>
            These configuration options can be present in a domain
            configuration section, that is, in a section called
            <quote>[domain/<replaceable>NAME</replaceable>]</quote>
            <variablelist>
                <varlistentry>
                    <term>min_id,max_id (integer)</term>
                    <listitem>
                        <para>
                            UID limits for the domain. If a domain contains
                            entry that is outside these limits, it is ignored
                        </para>
                        <para>
                            Default: 1000 for min_id, 0 (no limit) for max_id
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>timeout (integer)</term>
                    <listitem>
                        <para>
                            Timeout in seconds between heartbeats for this domain.
                            This is used to ensure that the backend process is
                            alive and capable of answering requests.
                        </para>
                        <para>
                            Default: 10
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>enumerate (bool)</term>
                    <listitem>
                        <para>
                            Determines if a domain can be enumerated. This
                            parameter can have one of the following values:
                        </para>
                        <para>
                            TRUE = Users and groups are enumerated
                        </para>
                        <para>
                            FALSE = No enumerations for this domain
                        </para>
                        <para>
                            Default: FALSE
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>entry_cache_timeout (integer)</term>
                    <listitem>
                        <para>
                            How many seconds should nss_sss consider
                            entries valid before asking the backend again
                        </para>
                        <para>
                            Default: 5400
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>cache_credentials (bool)</term>
                    <listitem>
                        <para>
                            Determines if user credentials are also cached
                            in the local LDB cache
                        </para>
                        <para>
                            Default: FALSE
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>account_cache_expiration (integer)</term>
                    <listitem>
                        <para>
                            Number of days entries are left in cache after
                            last successful login before being removed during
                            a cleanup of the cache. 0 means keep forever.
                            The value of this parameter must be greater than or
                            equal to offline_credentials_expiration.
                        </para>
                        <para>
                            Default: 0 (unlimited)
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>id_provider (string)</term>
                    <listitem>
                        <para>
                            The Data Provider identity backend to use for this
                            domain.
                        </para>
                        <para>
                            Supported backends:
                        </para>
                        <para>
                            proxy: Support a legacy NSS provider
                        </para>
                        <para>
                            local: SSSD internal local provider
                        </para>
                        <para>
                            ldap:  LDAP provider
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>use_fully_qualified_names (bool)</term>
                    <listitem>
                        <para>
                            If set to TRUE, all requests to this domain
                            must use fully qualified names. For example,
                            if used in LOCAL domain that contains a "test"
                            user, <command>getent passwd test</command>
                            wouldn't find the user while <command>getent
                            passwd test@LOCAL</command> would.
                        </para>
                        <para>
                            Default: FALSE
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>auth_provider (string)</term>
                    <listitem>
                        <para>
                            The authentication provider used for the domain.
                            Supported auth providers are:
                        </para>
                        <para>
                            <quote>ldap</quote> for native LDAP authentication. See
                            <citerefentry>
                                <refentrytitle>sssd-ldap</refentrytitle>
                                <manvolnum>5</manvolnum>
                            </citerefentry> for more information on configuring LDAP.
                        </para>
                        <para>
                            <quote>krb5</quote> for Kerberos authentication. See
                            <citerefentry>
                                <refentrytitle>sssd-krb5</refentrytitle>
                                <manvolnum>5</manvolnum>
                            </citerefentry> for more information on configuring Kerberos.
                        </para>
                        <para>
                            <quote>proxy</quote> for relaying authentication to some other PAM target.
                        </para>
                        <para>
                            <quote>none</quote> disables authentication explicitly.
                        </para>
                        <para>
                            Default: <quote>id_provider</quote> is used if it
                            is set and can handle authentication requests.
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>access_provider (string)</term>
                    <listitem>
                        <para>
                            The access control provider used for the domain.
                            There are two built-in access providers (in
                            addition to any included in installed backends)
                            Internal special providers are:
                        </para>
                        <para>
                            <quote>permit</quote> always allow access.
                        </para>
                        <para>
                            <quote>deny</quote> always deny access.
                        </para>
                        <para>
                            <quote>simple</quote> access control based on access
                            or deny lists. See <citerefentry>
                            <refentrytitle>sssd-simple</refentrytitle>
                            <manvolnum>5</manvolnum></citerefentry> for more
                            information on configuring the simple access module.
                        </para>
                        <para>
                            Default: <quote>permit</quote>
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>chpass_provider (string)</term>
                    <listitem>
                        <para>
                            The provider which should handle change password
                            operations for the domain.
                            Supported change password providers are:
                        </para>
                        <para>
                            <quote>ldap</quote> to change a password stored
                            in a LDAP server.  See
                            <citerefentry>
                                <refentrytitle>sssd-ldap</refentrytitle>
                                <manvolnum>5</manvolnum>
                            </citerefentry> for more information on configuring LDAP.
                        </para>
                        <para>
                            <quote>krb5</quote>  to change the Kerberos
                            password. See
                            <citerefentry>
                                <refentrytitle>sssd-krb5</refentrytitle>
                                <manvolnum>5</manvolnum>
                            </citerefentry> for more information on configuring Kerberos.
                        </para>
                        <para>
                            <quote>proxy</quote> for relaying password changes
                            to some other PAM target.
                        </para>
                        <para>
                            <quote>none</quote> disallows password changes explicitly.
                        </para>
                        <para>
                            Default: <quote>auth_provider</quote> is used if it
                            is set and can handle change password requests.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>lookup_family_order (string)</term>
                    <listitem>
                        <para>
                            Provides the ability to select preferred address family
                            to use when performing DNS lookups.
                        </para>
                        <para>
                            Supported values:
                        </para>
                        <para>
                            ipv4_first: Try looking up IPv4 address, if that fails, try IPv6
                        </para>
                        <para>
                            ipv4_only: Only attempt to resolve hostnames to IPv4 addresses.
                        </para>
                        <para>
                            ipv6_first: Try looking up IPv6 address, if that fails, try IPv4
                        </para>
                        <para>
                            ipv6_only: Only attempt to resolve hostnames to IPv6 addresses.
                        </para>
                        <para>
                            Default: ipv4_first
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>dns_resolver_timeout (integer)</term>
                    <listitem>
                        <para>
                            Defines the amount of time (in seconds) to wait for a reply from
                            the DNS resolver before assuming that it is unreachable. If this
                            timeout is reached, the domain will continue to operate in
                            offline mode.
                        </para>
                        <para>
                            Default: 5
                        </para>
                    </listitem>
                </varlistentry>
            </variablelist>
        </para>

        <para>
            Options valid for proxy domains.

            <variablelist>
                <varlistentry>
                    <term>proxy_pam_target (string)</term>
                    <listitem>
                        <para>
                            The proxy target PAM proxies to.
                        </para>
                        <para>
                            Default: not set by default, you have to take an
                            existing pam configuration or create a new one and
                            add the service name here.
                        </para>
                    </listitem>
                </varlistentry>

                <varlistentry>
                    <term>proxy_lib_name (string)</term>
                    <listitem>
                        <para>
                            The name of the NSS library to use in proxy
                            domains. The NSS functions searched for in the
                            library are in the form of
                            _nss_$(libName)_$(function), for example
                            _nss_files_getpwent.
                        </para>
                    </listitem>
                </varlistentry>
            </variablelist>
        </para>

        <refsect2 id='local_domain'>
            <title>The local domain section</title>
            <para>
                This section contains settings for domain that stores users and
                groups in SSSD native database, that is, a domain that uses
                <replaceable>id_provider=local</replaceable>.
            </para>
            <variablelist>
                <title>Section parameters</title>
                <varlistentry>
                    <term>default_shell (string)</term>
                    <listitem>
                        <para>
                            The default shell for users created
                            with SSSD userspace tools.
                        </para>
                        <para>
                            Default: <filename>/bin/bash</filename>
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>base_directory (string)</term>
                    <listitem>
                        <para>
                            The tools append the login name to
                            <replaceable>base_directory</replaceable> and
                            use that as the home directory.
                        </para>
                        <para>
                            Default: <filename>/home</filename>
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>create_homedir (bool)</term>
                    <listitem>
                        <para>
                            Indicate if a home directory should be created by default for new users.
                            Can be overriden on command line.
                        </para>
                        <para>
                            Default: TRUE
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>remove_homedir (bool)</term>
                    <listitem>
                        <para>
                            Indicate if a home directory should be removed by default for deleted users.
                            Can be overriden on command line.
                        </para>
                        <para>
                            Default: TRUE
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>homedir_umask (integer)</term>
                    <listitem>
                        <para>
                            Used by
                            <citerefentry>
                                <refentrytitle>sss_useradd</refentrytitle>
                                <manvolnum>8</manvolnum>
                            </citerefentry> to specify the default permissions on a newly created
                            home directory.
                        </para>
                        <para>
                            Default: 077
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>skel_dir (string)</term>
                    <listitem>
                        <para>
                            The skeleton directory, which contains files
                            and directories to be copied in the user's
                            home directory, when the home directory is
                            created by
                            <citerefentry>
                                <refentrytitle>sss_useradd</refentrytitle>
                                <manvolnum>8</manvolnum>
                            </citerefentry>
                        </para>
                        <para>
                            Default: <filename>/etc/skel</filename>
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>mail_dir (string)</term>
                    <listitem>
                        <para>
                            The mail spool directory. This is needed to
                            manipulate the mailbox when its corresponding
                            user account is modified or deleted.
                            If not specified, a default
                            value is used.
                        </para>
                        <para>
                            Default: <filename>/var/mail</filename>
                        </para>
                    </listitem>
                </varlistentry>
                <varlistentry>
                    <term>userdel_cmd (string)</term>
                    <listitem>
                        <para>
                            The command that is run after a user is removed.
                            The command us passed the username of the user being
                            removed as the first and only parameter. The return
                            code of the command is not taken into account.
                        </para>
                        <para>
                            Default: None, no command is run
                        </para>
                    </listitem>
                </varlistentry>
            </variablelist>
        </refsect2>

    </refsect1>

    <refsect1 id='example'>
        <title>EXAMPLE</title>
        <para>
            The following example shows a typical SSSD config. It does
            not describe configuration of the domains themselves - refer to
            documentation on configuring domains for more details.
<programlisting>
[sssd]
domains = LDAP
services = nss, pam
config_file_version = 2

[nss]
filter_groups = root
filter_users = root

[pam]

[domain/LDAP]
id_provider = ldap
ldap_uri = ldap://ldap.example.com
ldap_search_base = dc=example,dc=com

auth_provider = krb5
krb5_kdcip = kerberos.example.com
krb5_realm = EXAMPLE.COM
cache_credentials = true

min_id = 10000
max_id = 20000
enumerate = true
</programlisting>
        </para>
    </refsect1>

    <refsect1 id='see_also'>
        <title>SEE ALSO</title>
        <para>
            <citerefentry>
                <refentrytitle>sssd-ldap</refentrytitle><manvolnum>5</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sssd-krb5</refentrytitle><manvolnum>5</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sss_groupadd</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sss_groupdel</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sss_groupmod</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sss_useradd</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sss_userdel</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>sss_usermod</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>,
            <citerefentry>
                <refentrytitle>pam_sss</refentrytitle><manvolnum>8</manvolnum>
            </citerefentry>.
        </para>
    </refsect1>
</refentry>
</reference>