activation of daemons. However, the primary
advantage of this scheme is that all providers
and all consumers of the sockets can be
- started in parallel as soon als all sockets
+ started in parallel as soon as all sockets
are established. In addition to that daemons
can be restarted with losing only a minimal
number of client transactions or even any
AC_ARG_WITH([systemdsystemunitdir],
AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files]),
[], [with_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)])
-AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])
-AM_CONDITIONAL(HAVE_SYSTEMD, [test -n "$with_systemdsystemunitdir"])</programlisting>
+if test "x$with_systemdsystemunitdir" != xno; then
+ AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])
+fi
+AM_CONDITIONAL(HAVE_SYSTEMD, [test -n "$with_systemdsystemunitdir" -a "x$with_systemdsystemunitdir" != xno ])</programlisting>
<para>This snippet allows automatic
installation of the unit files on systemd
<programlisting>%post
if [ $1 -eq 1 ]; then
- # Enable (but don't start) the units by default
+ # On install, enable (but don't start) the units by default
/bin/systemctl enable foobar.service foobar.socket >/dev/null 2>&1 || :
+
+ # Alternatively, just call /bin/systemctl daemon-reload here,
+ # if the daemon should not be enabled by default on package
+ # installation
fi
%preun
if [ $1 -eq 0 ]; then
- # Disable and stop the units
+ # On uninstall, disable and stop the units
/bin/systemctl disable foobar.service foobar.socket >/dev/null 2>&1 || :
/bin/systemctl stop foobar.service foobar.socket >/dev/null 2>&1 || :
fi
%postun
+# On upgrade and uninstall, reload init system configuration, to make systemd honour changed unit files
+/bin/systemctl daemon-reload >/dev/null 2>&1 || :
if [ $1 -ge 1 ] ; then
- # On upgrade, reload init system configuration if we changed unit files
- /bin/systemctl daemon-reload >/dev/null 2>&1 || :
- # On upgrade, restart the daemon
+ # Optionally, on upgrade, restart the daemon
/bin/systemctl try-restart foobar.service >/dev/null 2>&1 || :
fi</programlisting>
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
for details.</para>
+ <para>To facilitate upgrades from a package
+ version that shipped only SysV init scripts to
+ a package version that ships both a SysV init
+ script and a native systemd service file, use
+ a fragment like the following:</para>
+
+ <programlisting>%triggerun -- foobar < 0.47.11-1
+if /sbin/chkconfig foobar ; then
+ /bin/systemctl enable foobar.service foobar.socket >/dev/null 2>&1 || :
+fi</programlisting>
+
+ <para>Where 0.47.11-1 is the first package
+ version that includes the native unit
+ file. This fragment will ensure that the first
+ time the unit file is installed it will be
+ enabled if and only if the SysV init script is
+ enabled, thus making sure that the enable
+ status is not changed. Note that
+ <command>chkconfig</command> is a command
+ specific to Fedora which can be used to check
+ whether a SysV init script is enabled. Other
+ operating systems will have to use different
+ commands here.</para>
</refsect2>
</refsect1>