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doc: clarify at which point user/group name resolution needs to work (#8884)

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Prompted by the discussions on:

https://bugs.freedesktop.org/show_bug.cgi?id=106339
This commit is contained in:
Lennart Poettering
2018-05-07 14:49:16 +02:00
committed by Zbigniew Jędrzejewski-Szmek
parent af1c0de0e1
commit bf613f7acc
2 changed files with 48 additions and 20 deletions
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man/systemd.special.xml
+13 -20
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@@ -866,31 +866,24 @@
<varlistentry>
<term><filename>nss-lookup.target</filename></term>
<listitem>
<para>A target that should be used as synchronization point
for all host/network name service lookups. Note that this is
independent of user/group name lookups for which
<filename>nss-user-lookup.target</filename> should be used.
All services for which the availability of full host/network
name resolution is essential should be ordered after this
target, but not pull it in. systemd automatically adds
dependencies of type <varname>After=</varname> for this
target unit to all SysV init script service units with an
LSB header referring to the <literal>$named</literal>
facility.</para>
<para>A target that should be used as synchronization point for all host/network name service lookups. Note
that this is independent of UNIX user/group name lookups for which <filename>nss-user-lookup.target</filename>
should be used. All services for which the availability of full host/network name resolution is essential
should be ordered after this target, but not pull it in. systemd automatically adds dependencies of type
<varname>After=</varname> for this target unit to all SysV init script service units with an LSB header
referring to the <literal>$named</literal> facility.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>nss-user-lookup.target</filename></term>
<listitem>
<para>A target that should be used as synchronization point
for all user/group name service lookups. Note that this is
independent of host/network name lookups for which
<filename>nss-lookup.target</filename> should be used. All
services for which the availability of the full user/group
database is essential should be ordered after this target,
but not pull it in. Note that system users are always
resolvable, and hence do not require any special ordering
against this target.</para>
<para>A target that should be used as synchronization point for all regular UNIX user/group name service
lookups. Note that this is independent of host/network name lookups for which
<filename>nss-lookup.target</filename> should be used. All services for which the availability of the full
user/group database is essential should be ordered after this target, but not pull it in. All services which
provide parts of the user/group database should be ordered before this target, and pull it in. Note that this
unit is only relevant for regular users and groups — system users and groups are required to be resolvable
during earliest boot already, and hence do not need any special ordering against this target.</para>
</listitem>
</varlistentry>
<varlistentry>