Release Notes

v1.1.19: Streamed binary updates & installer resilience

October 14, 2026

Zero-overhead streamed binary downloads for low-RAM nodes, hardened systemd service transitions, and clean uninstaller teardowns.

Improved

Streamed Agent Updates (< 15MB RAM): Binary delivery during agent self-updates is now streamed directly to disk via io.Copy instead of buffering the entire payload in memory. This eliminates transient heap memory spikes on budget VPS droplets.
Hardened Installer Teardown: The one-command installer proactively halts running tug-agent service processes prior to replacing the binary, preventing Linux ETXTBSY ("Text file busy") race conditions during reinstalls or manual updates.
Systemd Unit Teardown on Uninstall: The detached uninstaller script now removes /etc/systemd/system/tug-agent.service, triggers systemctl daemon-reload, and cleans up .next update artifacts to leave zero footprint.