btw - what do you mean by "So I could not stop allegro."? Can't you do docker-compose down ?

I still have access to the gui

UnsightlySeagull42 this upgrade process is a special upgrade if your current server version is v.0.15.0
Otherwise, as FrothyDog40 just said, simply follow the upgrade section of the Linux/MacOS installation guide: https://allegro.ai/clearml/docs/docs/deploying_clearml/clearml_server_linux_mac.html#upgrading

thank you for the information.
I am using the same GUI on 2 servers.
On both servers the following path did not exist:
/opt/trainsSo I could not stop allegro.
I run the commands on 1 server to upgrade it. But on the gui there is still the old version.
Does anyone know how I can proceed?

UnsightlySeagull42 note step #4 in the above-mentioned upgrade instructions:
If you are upgrading from Trains Server to ClearML Server, rename /opt/trains and its subdirectories to /opt/clearml.

UnsightlySeagull42 The upgrade process is slightly different depending on the environment in which you've deployed your ClearML server (e.g. for a https://allegro.ai/clearml/docs/docs/deploying_clearml/clearml_server_linux_mac.html#upgrading ).
Note the document you are referring to only applies once when you're moving from the older pre-0.16 versions in which case DB migration is required.
If your server is more up to date (0.16 and newer) you should be OK with the link above.

So you must have another instance running..
Try docker ps and see if any containers are up

Now I ran docker-compose down
But the allegro server is still available.