Hi. I've been building a remote access agent for Linux boards that end up on networks you don't control, and I'd like reports from boards I don't own.]
It's a static Go binary (no libc; armv6, armv7, arm64, amd64), about 12 MB RAM idle, kernel 3.2+, systemd or OpenRC. It dials one WebSocket over TLS on 443, so nothing listens on the board. You get a browser shell that survives short link drops, fh ssh and fh forward from your own terminal, CPU/memory/disk/temperature, and offline alerts.
So far the ARM builds have only passed my test suite under emulation. If you try it on an Armbian board, I'd like to know the board, the image, and whether temperature reads from the right sensor.
Install is one line from the dashboard, and --uninstall removes everything. Free for 5 devices.
Agent (Apache-2.0): https://github.com/Abnersouza7/fieldhand-agent
https://fieldhand.dev/?utm_source=armbian