This mode will log each several infos in LOG_DAEMON with priority Only implemented if compiled with SYSLOG feature. Should any of these tests except the user defined binary last longer than one minute the machineĪvailable command line options are the following: If any of these checks fail watchdog will cause a shutdown. These commands are called with the argument test or repair. Execute one or more test/repair commands found in /etc/watchdog.d.Execute a user defined command to do arbitrary tests.Is the temperature too high? (Temperature data not always available.).Is a process still running? The process is specified by a pid file.
Have some files changed within a given interval?.The watchdog daemon does several tests to check the system status: The watchdog daemon can be stopped without causing a reboot if the device /dev/watchdog is closed correctly, unless your kernel is compiled with the Watchdog the ability to reboot will depend on the state of the machines and interrupts. After a minute of inactivity the watchdog hardware will cause the reset. Each write delays the reboot time another minute. It opens /dev/watchdog, and keeps writing to it often enough to keep the kernel from resetting, at least once per Either way, there needs to be a daemon that tells the kernel the system is working fine. Reliable software-only watchdog inside the kernel. This can be implemented via special watchdog hardware, or via a slightly less The Linux kernel can reset the system if serious problems are detected.
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