Unit rest-server.socket not found on Ubuntu Server 22.04 vs 24.04

[kalleyne]

Output of rest-server --version

rest-server version rest-server 0.14.0 compiled with go1.24.3 on linux/amd64

Problem description / Steps to reproduce

I'm using a very basic rest-server.service to enable rest-server via systemd.
The file located at /etc/systemd/system/rest-server.service is identical on both Ubuntu 22.04 and 24.04.
I used the following commands:

sudo systemctl enable rest-server
sudo systemctl start rest-server

On both Ubuntu 22.04 and 24.04 I see the following error message:

Failed to start rest-server.service: Unit rest-server.socket not found.

I reboot both systems. When the systems are up I run the following command on both systems:

sudo systemctl status rest-server

Rest-server on Ubuntu 22.04 works and responds with:

● rest-server.service - Rest Server
     Loaded: loaded (/etc/systemd/system/rest-server.service; enabled; vendor preset: enabled)
     Active: active (running) since Fri 2025-06-13 19:55:40 CDT; 24min ago
   Main PID: 959 (rest-server)
      Tasks: 7 (limit: 4558)
     Memory: 9.6M
        CPU: 22ms
     CGroup: /system.slice/rest-server.service
             └─959 /home/user1/IMG/restserver/rest-server --path /tank0/backup --no-auth

Jun 13 19:55:40 ub22svr-restserver-t1 systemd[1]: Started Rest Server.
Jun 13 19:55:40 ub22svr-restserver-t1 rest-server[959]: Data directory: /tank0/backup
Jun 13 19:55:40 ub22svr-restserver-t1 rest-server[959]: Authentication disabled
Jun 13 19:55:40 ub22svr-restserver-t1 rest-server[959]: Append only mode disabled
Jun 13 19:55:40 ub22svr-restserver-t1 rest-server[959]: Private repositories disabled
Jun 13 19:55:40 ub22svr-restserver-t1 rest-server[959]: Group accessible repos disabled
Jun 13 19:55:40 ub22svr-restserver-t1 rest-server[959]: start server on [::]:8000

But rest-server fails on Ubuntu 24.04 with:

○ rest-server.service - Rest Server
     Loaded: loaded (/etc/systemd/system/rest-server.service; enabled; preset: enabled)
     Active: inactive (dead)

Is there something different on how systemd is implemented or how rest-server.service functions on Ubuntu 22.04 vs 24.04? I can provide a copy of the rest-server.service file if required. Thanks.

Expected behavior

Actual behavior

Do you have any idea what may have caused this?

I'm not sure what is causing this.

Did rest-server help you today? Did it make you happy in any way?

I use rest-server all the time. Been in use for a number of years.

[MichaelEischer]

I'm using a very basic rest-server.service to enable rest-server via systemd.

If you're using https://github.com/restic/rest-server/blob/master/examples/systemd/rest-server.service then you also have to install rest-server.socket from the same folder. Otherwise, please provide the systemd service