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man: document how get logging to work in a RootDirectory=/RootImage= environment

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Fixes: #18051
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Lennart Poettering 2021-01-20 22:27:41 +01:00
parent 3bdc25a4cf
commit 09872a6e1a
1 changed files with 14 additions and 0 deletions
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14
man/systemd.exec.xml
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@ -117,6 +117,20 @@
<para>The <varname>MountAPIVFS=</varname> and <varname>PrivateUsers=</varname> settings are particularly useful
in conjunction with <varname>RootDirectory=</varname>. For details, see below.</para>
<para>If <varname>RootDirectory=</varname>/<varname>RootImage=</varname> are used together with
<varname>NotifyAccess=</varname> the notification socket is automatically mounted from the host into
the root environment, to ensure the notification interface can work correctly.</para>
<para>Note that services using <varname>RootDirectory=</varname>/<varname>RootImage=</varname> will
not be able to log via the syslog or journal protocols to the host logging infrastructure, unless the
relevant sockets are mounted from the host, specifically:</para>
<example>
<title>Mounting logging sockets into root environment</title>
<programlisting>BindReadOnlyPaths=/dev/log /run/systemd/journal/socket /run/systemd/journal/stdout</programlisting>
</example>
<xi:include href="system-only.xml" xpointer="singular"/></listitem>
</varlistentry>