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man: fix missing markdown & minor errors

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In #19771 there were a few missing markdown tags a few style issue.

Signed-off-by: Peter Morrow <pemorrow@linux.microsoft.com>
This commit is contained in:
Peter Morrow 2021-06-09 18:04:08 +01:00 committed by Luca Boccassi
parent 91d0750dbf
commit dbb8b5bcf7
1 changed files with 9 additions and 10 deletions
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19
man/systemd.unit.xml
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@ -2207,14 +2207,14 @@ PrivateTmp=yes</programlisting>
<example>
<title>Top level drop-ins with template units</title>
<para>Top level drop-ins can be used to change some aspect of all units
of a particular type. For example by creating the
<filename index='false'>/etc/systemd/system/service.d</filename>
<para>Top level per-type drop-ins can be used to change some aspect of
all units of a particular type. For example by creating the
<filename index='false'>/etc/systemd/system/service.d/</filename>
directory with a drop-in file, the contents of the drop-in file can be
applied to all service units. We can take this further by having the
top-level drop-in instantiate a secondary helper unit. Consider for
example the following set of units and drop-in files where we install
an OnFailure dependency for all service units.</para>
an <varname>OnFailure=</varname> dependency for all service units.</para>
<para>
<filename index='false'>/etc/systemd/system/failure-handler@.service</filename>:</para>
@ -2226,10 +2226,9 @@ Description=My failure handler for %i
Type=oneshot
# Perform some special action for when %i exits unexpectedly.
ExecStart=/usr/sbin/myfailurehandler %i
</programlisting>
<para>We can then add an instance of the
<para>We can then add an instance of
<filename index='false'>failure-handler@.service</filename> as an
<varname>OnFailure=</varname> dependency for all service units.</para>
@ -2237,25 +2236,25 @@ ExecStart=/usr/sbin/myfailurehandler %i
<filename index='false'>/etc/systemd/system/service.d/10-all.conf</filename>:</para>
<programlisting>[Unit]
OnFailure=failure-handler@%n.service
OnFailure=failure-handler@%N.service
</programlisting>
<para>Now, after running <command>systemctl daemon-reload</command> all
services will have acquired an <varname>OnFailure=</varname> dependency on
<filename index='false'>failure-handler@%n.service</filename>. The
<filename index='false'>failure-handler@%N.service</filename>. The
template instance units will also have gained the dependency which results
in the creation of a recursive dependency chain. We can break the chain by
disabling the drop-in for the template instance units via a symlink to
<filename index='false'>/dev/null</filename>:</para>
<programlisting>
<command>mkdir /etc/systemd/system/failure-handler@.service.d</command>
<command>mkdir /etc/systemd/system/failure-handler@.service.d/</command>
<command>ln -s /dev/null /etc/systemd/system/failure-handler@.service.d/10-all.conf</command>
<command>systemctl daemon-reload</command>
</programlisting>
<para>This ensures that if a <filename index='false'>failure-handler@.service</filename> instance fails it will not trigger an instance named
<filename index='false'>failure-handler@failure-handler.service.service</filename>.</para>
<filename index='false'>failure-handler@failure-handler.service</filename>.</para>
</example>