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man: Document that resolved requires nss-resolve to work with libc 

Closes #884.
This commit is contained in:
Lennart Poettering 2015-08-28 02:03:11 +02:00
parent d56cc29880
commit 437293cf80
1 changed files with 14 additions and 6 deletions
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20
man/systemd-resolved.service.xml
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@ -61,15 +61,22 @@
resolver and an LLMNR resolver and responder. It also generates
<filename>/run/systemd/resolve/resolv.conf</filename> for
compatibility which may be symlinked from
<filename>/etc/resolv.conf</filename>.</para>
<filename>/etc/resolv.conf</filename>. The glibc NSS module
<citerefentry><refentrytitle>nss-resolve</refentrytitle><manvolnum>8</manvolnum></citerefentry>
is necessary to allow libc's NSS resolver functions to resolve
host names via <command>systemd-resolved</command>.</para>
<para>The DNS servers contacted are determined from the global
settings in
<citerefentry><refentrytitle>resolved.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
the per-link static settings in <filename>.network</filename>
files, and the per-link dynamic settings received over DHCP. See
settings in <filename>/etc/systemd/resolved.conf</filename>, the
per-link static settings in <filename>/etc/systemd/network/*.network</filename> files,
and the per-link dynamic settings received over DHCP. See
<citerefentry><refentrytitle>resolved.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
and
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for more details.</para>
for details. To improve compatibility
<filename>/etc/resolv.conf</filename> is read in order to discover
configured system DNS servers, however only if it is not a symlink
to <filename>/run/systemd/resolve/resolv.conf</filename> (see above).</para>
<para><command>systemd-resolved</command> synthesizes DNS RRs for the following cases:</para>
@ -137,6 +144,7 @@
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>resolved.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>nss-resolve</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>