Mac Pro (2019) Rackmount Sequoia 15.4.1 (24E263) ( Network Name : The Beast)
MacBook Pro Sequoia 15.4.1 (24E263) ( Network Name : PORTA-XX)
iPad Pro using Möbius Sync iOS 18.5
Both computers are using SyncThing v1.27.12
I was making quite a few edits.mostly reorganization of my photo archive, changing folder names, etc. I was doing this work on the Mac Pro.
While watching the process unfold on both computer screens, all was going as expected when in the middle of the process the syncing stopped. An error appeared on the Mac Pro where I was initiating the work. An error alert appeared on that machine…
“SyncThing seems to be down, or there is a problem with your Internet connection Retrying…”
On the MacBook Pro I am unable to see the SyncThing browser interface as it claims that that it cannot find the server, so I cannot do much trouble shooting there…
I have no connection problems: I enjoy a 1 gig synchronous connection, the two computers are talking to each other in other ways such as I iCloud sharing.
I am really stuck. Not sure where to look or how to analyze the problem, especially not being able to see the Actions menu on the MacBook Pro.
SyncThing is so reliable and I have become incredibly dependent on it in my workflow. I have had very issues and for it stop in mid sync is highly unusual.
Is it running at all? To find out, open Terminal and use ps -ef | grep syncthing — if you see three processes (two for Syncthing and one for grep), Syncthing is running. If you see only one process (the one for grep) Syncthing is not running.
I wish I knew more about using Syncthing, not sure how it could operate so trouble free for so long and then suddenly stop working, what events can cause this?
I included the link for how to install Syncthing because I wanted you to tell me how you have it set up to run. But that’s okay.
Looks like Syncthing processes are running. But with no access to the UI, I would normally counsel stopping Syncthing and restarting it, or rebooting the MBP.
For reasons unclear to me, I now have the browser interface for Syncthing on the MacBook Pro.
Before I contact support or forums, I carry out whatever I can do to eliminate those options. Thus, I stopped, restarted and quit & started Syncthing. I also restarted the MacBook Pro, none of these efforts returned Syncthing to syncing again.
I should have mentioned that I originally installed Syncthing on my Macs using Homebrew but later moved to the more standard install for the Mac package utilizing the DMG, automatic update method standard to Mac applications.
If the browser interface is working again, please post screenshots from both sides. A screenshot that shows a shared Folder that isn’t syncing and the Syncthing peer that it isn’t syncing with, both expanded would be very helpful.
The current version of Syncthing is 1.29.6; consider upgrading just in case you’re running into a problem that’s already been fixed.
If nothing becomes apparent from the screenshot or an upgrade, please take a look at the logs (FAQ — Syncthing documentation) and see if anything jumps out at you as to what might be going on.
The first screenshot is the MacBook Pro (Porta-XX) showing the browser interface and the floating About window indicating the current version of Syncthing installed.
The second screenshot shows the browser interface for the Mac Pro (The Beast) plus its floating About window indicating its version of Syncthing.
A few things jump out at me: there is no version number in the MacBook Pro interface and in the Mac Pro interface it disagrees with what the About window shows.
Both machines are at the latest version of Syncthing, I was incorrect earlier as I got my information from the interface.
I read the FAQ page but nothing really addresses my issue. It’s pretty windows oriented. Not that I would know how to glean any information from them but where are the log files for Syncthing on the Mac?
I’m running Syncthing on Mac and Windows. And I apologize – the link I sent for the logs wasn’t as clear as I thought it would be for Mac users, I haven’t had to look at Syncthing logs on my Mac before today. My Syncthing log was found in /Users/chaos/Library/Logs/syncthing.log – change “chaos” to your username and it should be there.
It looks a lot like PORTA-XX has lost connection with all other Devices in your Syncthing cluster. Is PORTA-XX on 192.168.1.6 with The Beast on 192.168.1.2? Can they ping one-another?
Please post the output of lsof -i -n -P | grep syncthing on both systems – this will show what ports Syncthing has open, and may lead to a better understanding of why these systems are not communicating.
