How to start a script at startup?

[MatejKovacic]

I am trying to run Wireguard VPN to my server.

I created /etc/wireguard/wg0.conf with:

[Interface]
PrivateKey = ****

[Peer]
PublicKey = ****
PresharedKey = ****
Endpoint = xx.xx.xx.xx:51194
AllowedIPs = x.x.x.0/24
PersistentKeepalive = 5

Then I run:

ip link add dev wg0 type wireguard
wg setconf wg0 /etc/wireguard/wg0.conf
ip addr add x.x.x.x/32 dev wg0
ip link set up dev wg0
ip route add x.x.x.0/24 dev wg0

This works fine. But how can I start my VPN automatically at startup (reboot)?

There is no system, crontab, if I put these commands to /etc/rc.local they do not run, also if I create /etc/init.d/S99wireguard this doesn't run.

Any help?

[MatejKovacic]

OK, really ugly hack is to add these commands at the end of /etc/init.d/rcS. But I would prefer some more clean solution...

[stvorl]

You can add custom "service" to /etc/init.d with proper priority prefix (10, 99, etc), just base it on any script here, and re-implement start) and stop) cases. Like I responded with in #245.
At least, that would be piece of logic, concluded in separate file, not changing OEM files.
But, maybe this solution is uglier than your, indeed. 😉

[MatejKovacic]

Okay... I created /etc/init.d/S50myvpn:

#!/bin/sh
case "$1" in
  start)
        echo "Start my Wireguard connection"
        ip link add dev wg0 type wireguard
        wg setconf wg0 /etc/wireguard/wg0.conf
        ip addr add xx.xx.xx.xx/32 dev wg0
        ip link set up dev wg0
        ip route add xx.xx.xx.xx/24 dev wg0
        ;;
  stop)
        ;;
  restart|reload)
        "$0" stop
        "$0" start
        ;;
  *)
        echo "Usage: $0 {start|stop|restart}"
        exit 1
esac
exit $?

... and is not working. I. e. does not autostart. Do I need to run anything else? If commands are in /etc/init.d/rcS, it works.

[MatejKovacic]

Sorry, never mind. I forgot to make it executable (chmod +x /etc/init.d/S50myvpn).