Two ways to install a watchdog on a Raspberry Pi [turn]

The Raspberry Pi CPU is protected by a hardware watchdog, which can be implemented by installing modules and guarding the watchdog program to prevent Raspberry Pi from freezing.

Installation method One:
Source code for WATCHDOG.SH:

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#!/usr/bin/env bashecho "[+] Activating Temperature Sensor"modprobe bcm2708_wdogecho "bcm2708_wdog" >> /etc/modulesecho "[+]Installing Watchdog"apt-get -y install watchdog chkconfigecho "[+]Setting Up Watchdog"chkconfig watchdog onsed -i ‘s/#max-load-1[^5]/max-load-1\ /g‘ /etc/watchdog.confsed -i ‘s/#\(watchdog-device\t[\ ]*\)\=/\1\t\=/g‘ /etc/watchdog.confsed -i ‘s/#\(temperature-device[\ ]*\)\=/\1\ \= \/sys\/class\/thermal\/thermal\_zone0\/temp/g‘ /etc/watchdog.confsed -i ‘s/#\(max-temperature[\ ]*\)\=\ 120/\1\ \=\ 75000/g‘ /etc/watchdog.confsed -i ‘s/#\(interval[\ ]*\)\=\ 1/\1\ \=\ 10 /g‘ /etc/watchdog.conf/etc/init.d/watchdog start

Run:

1	sudosh watchdog.sh

Installation Method Two:
1. Load the watchdog module, edit the/etc/modules file, add a line "Bcm2708_wdog"

12	sudomodprobe bcm2708_wdogsudonano /etc/modules

Add a line "Bcm2708_wdog"

2. Installing the System configuration software and the watchdog program

1	sudoapt-get installchkconfig watchdog

3. Configure the watchdog program and edit the "/etc/watchdog.conf" file

1	sudonano /etc/watchdog.conf

Remove the # Watchdog-device =/dev/watchdog before the watchdog device corresponds to the Raspberry Pi hardware watchdog
Remove the # number before max-load-1 = 24, and restart when the 1-minute load process exceeds 24

You can also set the high temperature reset:
Remove
Temperature-device =
Max-temperature = 120
Before the # number, instead
Temperature-device =/sys/class/thermal/thermal_zone0/temp
Max-temperature = 80000
Temperatures exceeding 80 degrees will cause a reboot to protect the CPU.
After the configuration is complete, save (ctrl+o), exit (CTRL+X).

4. Configure the watchdog program, Boot automatically run

1	chkconfig watchdog on

5. Start the watchdog

1	sudo/etc/init.d/watchdogstart

This article comes from: Raspberry Pi Lab
Link Address: http://shumeipai.nxez.com/2013/10/05/raspberry-pi-for-two-methods-of-installing-watchdog.html

Two ways to install a watchdog on a Raspberry Pi [turn]