Charlie
(1689SynC-=##)
February 27, 2026, 8:16am
1
when I run systemctl start syncthing@??? I get these error messages
Feb 27 07:53:08 raspberrypi systemd[1]: /etc/systemd/system/syncthing@.service:102: Failed to parse boolean value, ignoring: disconnected
Feb 27 07:53:08 raspberrypi systemd[1]: /etc/systemd/system/syncthing@.service:110: Unknown key name ‘PrivatePIDs’ in section ‘Service’, ignoring.
Any help to sort this out is appreciated.
calmh
(Jakob Borg)
February 27, 2026, 8:48am
2
Those don’t look like errors, they look like warnings about parts of the systemd file systemd doesn’t understand and thus ignores. Is there an actual problem?
Charlie
(1689SynC-=##)
February 27, 2026, 9:20am
3
Thanks Jakob. The issue I am having is that I can ping the pi from my laptop and ssh into it, but I cannot connect to it via any browser.
bt90
(Bt90)
February 27, 2026, 7:45pm
4
The default listener IP is bound to localhost. You need to adjust that if you want to be able to access the web UI from a different system.
Charlie
(1689SynC-=##)
February 28, 2026, 8:44am
5
Thanks bt90, I’ll google it and see how to do that.
bt90
(Bt90)
February 28, 2026, 8:56am
6
Either via the web UI from your Pi or by editing the config file:
Charlie
(1689SynC-=##)
February 28, 2026, 9:08am
7
Thank you, I’ll take a look later
Arneko
(Arne Ko)
March 2, 2026, 2:51am
8
You can also use ssh to do a port forward, e.g.
ssh <user>@<pi2> -L 18384:localhost:8384
(from the top of my head, so take it with a grain of salt)
This will basically open a port 18384 on your local machine and all requests will be routed through ssh to the pi’s port 8384
i.e. in your browser on your PC you can reach the GUI on localhost:18384
OK… this is using openssh, I suppose. But you can achieve the same thing with putty under Connection:SSH:Tunnels
In which case
Source Port: 18384 (or whatever you want)
Destination: localhost:8384
I do this all the time, but I rarely need to type this anymore.
Charlie
(1689SynC-=##)
March 2, 2026, 7:25pm
9
Thank you, I will give it a try
Charlie
(1689SynC-=##)
March 11, 2026, 12:07am
10
Still having an issue. I installed the approriate raspberry pi version for a pi2 and I have tried the version of ubuntu using the pi image maker and still no success. Arneko, I tried that but without any change and bt90 I couldn’t make any sense of that page you posted. Way beyond me, but thanks for trying to help. I am running LM on my laptop and raspberrypi on the pi, installed syncthing on both, but on the pi when I check to see if syncthing is running I get a message ‘failed to start syncthing.service: Unit syncthing.service not found.
Arneko
(Arne Ko)
March 11, 2026, 6:47am
11
How are you trying to start syncthing?
The message you are seeing is the same I get when trying “systemctl start syncthing”
You need to tell systemd what user syncthing is supposed to run as.
I.e.
sudo systemctl start syncthing@charlie (or whatever your username is)
and if you want syncthing to startup automatically after reboot
sudo systemctl enable syncthing@charlie
Charlie
(1689SynC-=##)
March 11, 2026, 8:22am
12
Thanks, Arneko. That has sorted that but I stll am not able to access the pi on the laptop’s browser. What ports am I meant to have open?
Arneko
(Arne Ko)
March 11, 2026, 9:41am
13
Since you are already able to log in via ssh, I would suggest my method sith the ssh port-forwarding.
I suppose “LM” refers to “Linux Mint”?
In which case, when you access via ssh, you just add the line “-L 18384:localhost:8384" to the ssh command , as I wrote above.
syncthing opens port 8384 on the pi for the webgui, you do not need to do that. But it is set up such that you can only access it from the pi itself.
Use ssh <user>@<pi2> -L 18384:localhost:8384 on the LM machine, then you can access the pi’s GUI from http://localhost:18384 from the LM machine.
Charlie
(1689SynC-=##)
March 11, 2026, 10:13am
14
Thank you, yes, LM is Linux Mint. I can still ssh but when I run the command you suggested I get this ssh: Could not resolve hostname &&&&&&&: Name or service not known
Charlie
(1689SynC-=##)
March 11, 2026, 10:18am
15
I should mention that I can access syncthing in the browser on the pi
Charlie
(1689SynC-=##)
March 11, 2026, 2:57pm
16
I have reinstalled ubuntu and can ssh into the pi but have the same issue with the browser and the command you suggested. I had it working well for a number of years and it is now becoming a headache lol
Charlie
(1689SynC-=##)
March 12, 2026, 8:04pm
17
Finally sorted. Ubuntu on the PC and raspian on pi2. Must have done something wrong originally but all is good now. Thanks.