User systemd service

2025-01-07 190 words One minute

| Ubuntu 22.04

All of users’ systemd have to place in directory ~/.config/systemd/user/

If you want start user systemd unit when user login, run:
systemctl --user enable <service>

List of available types of systemd units:

        
        
        
    
systemctl -t help
Available unit types:
service
mount
swap
socket
target
device
automount
timer
path
slice
scope

Create user systemd file to make ssh connection:

Name “hetzner” was already created in ~/.ssh/config:
...
host hetzner
Hostname 159.69.152.138
Port 22
user goto
IdentityFile /home/goto/.ssh/id_rsa
...

        
        
        
    
cat <<EOF > ~/.config/systemd/user/ssh-hetznder-sockd5.service
[Unit]
Description=Setup a secure tunnel to %I
After=network.target

[Service]
Environment="TARGET=hetzner"
# EnvironmentFile=/etc/default/secure-tunnel@%i
ExecStart=/usr/bin/ssh -NT -o ServerAliveInterval=60 -o ExitOnForwardFailure=yes -D 1080 $TARGET

# Restart every >2 seconds to avoid StartLimitInterval failure
RestartSec=5
Restart=always
EOF

And reload systemd:

systemctl --user daemon-reload

Enable and start systemd service:

systemctl --user enable --now ssh-hetznder-sockd5

Check that service alive:

        
        
        
    
$ systemctl --user status ssh-hetznder-sockd5
● ssh-hetznder-sockd5.service - Setup a secure tunnel to
     Loaded: loaded (/home/goto/.config/systemd/user/ssh-hetznder-sockd5.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2025-01-07 15:28:57 MSK; 5s ago
   Main PID: 643630 (ssh)
      Tasks: 1 (limit: 18149)
     Memory: 1.8M
        CPU: 54ms
     CGroup: /user.slice/user-1000.slice/user@1000.service/app.slice/ssh-hetznder-sockd5.service
             └─643630 /usr/bin/ssh -NT -o ServerAliveInterval=60 -o ExitOnForwardFailure=yes -D 1080 hetzner