man: document what SIGUSR1 and SIGUSR2 do to resolved

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Lennart Poettering 2016-06-10 20:29:32 +02:00
parent bc81447ea5
commit 2c7284a9a9
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@ -145,6 +145,28 @@
</refsect1>
<refsect1>
<title>Signals</title>
<variablelist>
<varlistentry>
<term><constant>SIGUSR1</constant></term>
<listitem><para>Upon reception of the SIGUSR1 process signal <command>systemd-resolved</command> will dump the
contents of all DNS resource record caches it maintains into the system logs.</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>SIGUSR2</constant></term>
<listitem><para>Upon reception of the SIGUSR2 process signal <command>systemd-resolved</command> will flush all
caches it maintains. Note that it should normally not be necessary to request this explicitly except for
debugging purposes as <command>systemd-resolved</command> flushes the caches automatically anyway any time
the host's network configuration changes.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>