Systemd Services
Manage system services with systemd.
Service Unit File
ini
# /etc/systemd/system/myapp.service [Unit] Description=My Application After=network.target [Service] Type=simple User=myapp WorkingDirectory=/opt/myapp ExecStart=/opt/myapp/bin/start ExecStop=/opt/myapp/bin/stop Restart=always RestartSec=5 Environment=NODE_ENV=production [Install] WantedBy=multi-user.target
Service Management
bash
systemctl daemon-reload systemctl start myapp systemctl stop myapp systemctl restart myapp systemctl enable myapp systemctl status myapp journalctl -u myapp -f
Timer (Cron Replacement)
ini
# /etc/systemd/system/backup.timer [Unit] Description=Daily backup [Timer] OnCalendar=daily Persistent=true [Install] WantedBy=timers.target
Resource Limits
ini
[Service] MemoryLimit=512M CPUQuota=50%
Best Practices
- •Use Type=notify for better tracking
- •Implement proper restart policies
- •Use timers instead of cron
- •Set resource limits