<refsect1 id='service_discovery'>

<title>SERVICE DISCOVERY</title>

<para>

The service discovery feature allows back ends to automatically

find the appropriate servers to connect to using a special DNS

query. This feature is not supported for backup servers.

</para>

<refsect2 id='configuration'>

<title>Configuration</title>

<para>

If no servers are specified, the back end automatically

uses service discovery to try to find a server. Optionally,

the user may choose to use both fixed server addresses

and service discovery by inserting a special keyword,

<quote>_srv_</quote>, in the list of servers. The order

of preference is maintained. This feature is useful if, for

example, the user prefers to use service discovery whenever

possible, and fall back to a specific server when no servers

can be discovered using DNS.

</para>

</refsect2>

<refsect2 id='domain_name'>

<title>The domain name</title>

<para>

Please refer to the <quote>dns_discovery_domain</quote>

parameter in the

<citerefentry>

<refentrytitle>sssd.conf</refentrytitle>

<manvolnum>5</manvolnum>

</citerefentry>

manual page for more details.

</para>

</refsect2>

<refsect2 id='search_protocol'>

<title>The protocol</title>

<para>

The queries usually specify _tcp as the protocol. Exceptions

are documented in respective option description.

</para>

</refsect2>

<refsect2 id='reference'>

<title>See Also</title>

<para>

For more information on the service discovery mechanism,

refer to RFC 2782.

</para>

</refsect2>

</refsect1>