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-rw-r--r--man/systemd-resolve.xml6
-rw-r--r--man/systemd-resolved.service.xml22
2 files changed, 28 insertions, 0 deletions
diff --git a/man/systemd-resolve.xml b/man/systemd-resolve.xml
index 4b66f836a2..b917ac20a2 100644
--- a/man/systemd-resolve.xml
+++ b/man/systemd-resolve.xml
@@ -288,6 +288,12 @@
<listitem><para>Resets the statistics counters shown in <option>--statistics</option> to zero.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>--flush-caches</option></term>
+
+ <listitem><para>Flushes all DNS resource record caches the service maintains locally.</para></listitem>
+ </varlistentry>
+
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
diff --git a/man/systemd-resolved.service.xml b/man/systemd-resolved.service.xml
index 829729ca09..485f3e9aee 100644
--- a/man/systemd-resolved.service.xml
+++ b/man/systemd-resolved.service.xml
@@ -146,6 +146,28 @@
</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>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,