Gnadenlos kopiert ¹⁾, eingedeutscht und angepasst:

Syncthing Repository hinzufügen

curl -s https://syncthing.net/release-key.txt | sudo apt-key add -
echo "deb https://apt.syncthing.net/ syncthing release" > /etc/apt/sources.list.d/syncthing.list
sudo apt-get update
sudo apt-get install syncthing

Service konfigurieren:

sudo vim /etc/systemd/system/syncthing@.service

[Unit]
Description=Syncthing - Open Source Continuous File Synchronization for %I
Documentation=man:syncthing(1)
After=network.target

[Service]
User=%i
ExecStart=/usr/bin/syncthing -no-browser -gui-address="0.0.0.0:8384" -no-restart -logflags=0
Restart=on-failure
SuccessExitStatus=3 4
RestartForceExitStatus=3 4

[Install]
WantedBy=multi-user.target

sudo systemctl daemon-reload

Starten mit

sudo systemctl start syncthing@$USER

E.g.

sudo systemctl start syncthing@root
sudo systemctl start syncthing@jmutai

Confirm service status:

sudo systemctl status syncthing@$USER

Nun ist die GUI über https:<server_ip>:8384/ erreichtbar. Lässt man in der Config den -gui-address='ip:port Parameter weg, läuft der Server auf https://localhost:8384/