rebuild of systemd design

systemd/system/petrified.service

@@ -0,0 +1,32 @@
+#
+# /usr/lib/systemd/system/petrified.service
+#
+# This unit is intended for out-of-the-box turnkey operation
+# and runs as the root user using the predefined defaults for
+# files and directories in /etc/petrified.conf
+#
+# The provided petrified.timer unit is what should be enabled,
+# not this service unit file directly:
+#
+#  systemctl start petrified.timer
+#  systemctl enable petrified.timer
+#
+
+[Unit]
+Description=Run petrified in system mode
+After=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/petrified -c /etc/petrified.conf
+
+# A target is being provided in the case where the advanced
+# admin wants to override this unit with multiple config files
+# for multiple interfaces. In this use case, *both* the custom
+# service units and the timer are enabled with systemctl (as each
+# custom unit will not be called "petrified.service", instead
+# something like "petrified-wlp3s0.service")
+
+[Install]
+WantedBy=petrified.target
+

systemd/system/petrified.target

@@ -0,0 +1,10 @@
+#
+# /usr/lib/systemd/system/petrified.target
+#
+# Note: If using a target to run mutliple service units, remember
+# to enable both the multiple unit files and the single timer.
+#
+
+[Unit]
+Description=Petrified units via timers
+

systemd/system/petrified.timer

@@ -0,0 +1,19 @@
+#
+# /usr/lib/systemd/system/petrified.timer
+#
+# Note: Only one timer is needed if running multiple service
+# units for multiple interfaces. No need to duplicate.
+#
+
+[Unit]
+Description=Petrified update every 6 hours
+
+[Timer]
+Unit=petrified.service
+OnCalendar=6h
+AccuracySec=1h
+Persistent=true
+
+[Install]
+WantedBy=multi-user.target
+