Config files are installed with the .sample extension

You can now do 'cp edge.conf.sample edge.conf' to create a n2n configuration. If the .conf (for edge and supernode) are present, the service is enabled automatically. This prevents unwanted services to be enabled, and it preserves services activation across updates

packages/debian/debian/conffiles

@@ -1,2 +1,2 @@
-/etc/n2n/edge.conf
-/etc/n2n/supernode.conf
+/etc/n2n/edge.conf.sample
+/etc/n2n/supernode.conf.sample

packages/debian/debian/n2n.debhelper.log

@@ -11,4 +11,3 @@ dh_link
 dh_gencontrol
 dh_md5sums
 dh_builddeb
-dh_builddeb

packages/debian/debian/n2n.postrm.debhelper

@@ -1,4 +1,4 @@
-# Automatically added by dh_installdebconf
+# Automatically added by dh_installdebconf/11.1.6ubuntu2
 if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
 	. /usr/share/debconf/confmodule
 	db_purge

packages/debian/debian/postinst

@@ -23,12 +23,21 @@ echo "Rebuilding ld cache..."
 if [ -f /.dockerenv ]; then exit 0; fi
 
 # Start service after upgrade/install
-echo "(Re)Starting n2n..."
 systemctl daemon-reload
 systemctl reset-failed
 
-# Do not start services automatically
-#systemctl restart edge
-#systemctl restart supernode
+# Enable edge
+if [ -f /etc/n2n/edge.conf ]; then
+    echo "Enabling n2n edge..."
+    systemctl enable edge
+    systemctl restart edge
+fi
+
+# Enable supernode
+if [ -f /etc/n2n/supernode.conf ]; then
+    echo "Enabling n2n supernode..."
+    systemctl enable supernode
+    systemctl restart supernode
+fi
 
 exit 0

packages/rpm/n2n.spec.in

@@ -48,8 +48,8 @@ rm -fr $RPM_BUILD_ROOT
 /usr/share/man/man8/edge.8.gz
 /usr/lib/systemd/system/edge.service
 /usr/lib/systemd/system/supernode.service
-%config(noreplace) /etc/n2n/supernode.conf
-%config(noreplace) /etc/n2n/edge.conf
+%config(noreplace) /etc/n2n/supernode.conf.sample
+%config(noreplace) /etc/n2n/edge.conf.sample
 
 # Set the default attributes of all of the files specified to have an
 # owner and group of root and to inherit the permissions of the file
@@ -71,17 +71,26 @@ rm -fr $RPM_BUILD_ROOT
 
 if [ ! -f /.dockerenv ]; then
 /bin/systemctl daemon-reload
-# Do not enable service automatically
-#/bin/systemctl enable  edge.service
-#/bin/systemctl restart edge.service
-#/bin/systemctl enable  supernode.service
-#/bin/systemctl restart supernode.service
+    if [ -f /etc/n2n/edge.conf ]; then
+	/bin/systemctl enable  edge.service
+	/bin/systemctl restart edge.service
+	fi
+
+    if [ -f /etc/n2n/supernode.conf ]; then
+	/bin/systemctl enable  supernode.service
+	/bin/systemctl restart supernode.service
+    fi
 fi
 
 %preun
 if [ ! -f /.dockerenv ]; then
+if [ -f /etc/n2n/edge.conf ]; then
 /bin/systemctl disable edge.service
 /bin/systemctl stop    edge.service
+fi
+
+if [ -f /etc/n2n/supernode.conf ]; then
 /bin/systemctl disable supernode.service
 /bin/systemctl stop    supernode.service
 fi
+fi