yanorei32 / os_monitoring_and_automatic_restarter

OS Monitoring and Automatic Restarter

Why?

I have a server environment but it frequently shows kernel panic :(

This problem is resolved with a workaround now, but I have worries about it.

And to make matters worse, I'll travel starting tomorrow.

Deployed sample

Architecture

1. Server (PC) sends A (0x41) to /dev/ttyACM0 every 1s.
2. Watcher (Arduino UNO) check the serial port, and if can not receive a message for more than 5 sec, it triggers RESET PIN on the motherboard. (excepts wait for boot state.)

How to use it

PC daemon installation

1. Install ./target/availability_report to /usr/sbin/.
2. Install ./target/availability_report.service to /etc/systemd/system/.
3. Run systemctl daemon-reload and systemctl enable --now availability_report

NOTE: If your device path is not /dev/ttyACM0, please edit the availability_report.

Arduino installation

1. Write watcher/watcher.ino to Arduino.

System installation

1. Connect RESET PIN (+) on the motherboard to GPIO 2 on the Arduino.
2. Connect Arduino to the PC. (Ground potential must be matched.)