systemd: Pass start/stop to service - raspberry-pi

Question

I am trying to create an systemd init script for starting and stopping the softether VPN server.
A tutorial I found suggests following init.d script.
#!/bin/sh
# chkconfig: 2345 99 01
# description: SoftEther VPN Server
DAEMON=/usr/local/vpnserver/vpnserver
LOCK=/var/lock/subsys/vpnserver
test -x $DAEMON || exit 0
case "$1" in
start)
$DAEMON start
touch $LOCK
;;
stop)
$DAEMON stop
rm $LOCK
;;
restart)
$DAEMON stop
sleep 3
$DAEMON start
;;
*)
echo "Usage: $0 {start|stop|restart}"
exit 1
esac
exit 0
But I'd like to use systemd, so I wrote following service file.
[Unit]
Description=Softether VPN server
After=syslog.target
After=network.target
[Service]
Type=simple
ExecStart=/usr/local/vpnserver/vpnserver start
ExecStop=/usr/local/vpnserver/vpnserver stop
# Give a reasonable amount of time for the server to start up/shut down
TimeoutSec=300
[Install]
WantedBy=multi-user.target
But this script does not keep the VPN server running. sudo systemctl status softethervpn gives me following status.
● softethervpn.service - Softether VPN server
Loaded: loaded (/lib/systemd/system/softethervpn.service; disabled)
Active: deactivating (stop) since Mon 2016-04-18 19:11:41 CEST; 1s ago
Process: 1463 ExecStart=/usr/local/vpnserver/vpnserver start (code=exited, status=0/SUCCESS)
Main PID: 1463 (code=exited, status=0/SUCCESS); : 1474 (vpnserver)
CGroup: /system.slice/softethervpn.service
├─1471 /usr/local/vpnserver/vpnserver execsvc
└─control
└─1474 /usr/local/vpnserver/vpnserver stop
Apr 18 19:11:40 raspberrypi systemd[1]: Started Softether VPN server.
Apr 18 19:11:41 raspberrypi vpnserver[1463]: The SoftEther VPN Server service has been started.
Apr 18 19:11:42 raspberrypi vpnserver[1474]: Stopping the SoftEther VPN Server service ...
Apr 18 19:11:42 raspberrypi vpnserver[1474]: SoftEther VPN Server service has been stopped.
How do I need to correct my service file to work correctly?

Answer 1

It seems that the Type needs to be forking. Following script works for me (found at SoftEther Configurationfile for Systemd).
[Unit]
Description=SoftEther VPN Server
After=network.target
[Service]
Type=forking
ExecStart=/usr/local/vpnserver/vpnserver start
ExecStop=/usr/local/vpnserver/vpnserver stop
[Install]
WantedBy=multi-user.target

Answer 2

for SoftEther this works
[Unit]
Description=SoftEther VPN Server
After=network.target auditd.service
[Service]
Type=forking
TasksMax=infinity
EnvironmentFile=-/usr/local/vpnserver
ExecStart=/usr/local/vpnserver/vpnserver start
ExecStop=/usr/local/vpnserver/vpnserver stop
KillMode=process
Restart=on-failure
# Hardening
PrivateTmp=yes
ProtectHome=yes
ProtectSystem=full
ReadOnlyDirectories=/
ReadWriteDirectories=-/usr/local/vpnserver
[Install]
WantedBy=multi-user.target
It is the official service for SoftEther, expect this line has been removed
CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE CAP_NET_BROADCAST CAP_NET_RAW CAP_SYS_NICE CAP_SYSLOG CAP_SETUID
which caused some error for me, Ex,
-- Alert: SoftEther VPN Kernel --
Unable to create /usr/local/vpnserver/.VPN-49BDCFFA14.
-- Alert: SoftEther VPN Kernel --
Unable to create /usr/local/vpnserver/.VPN-49BDCFFA14.