Hi

I want to get the count of host reboot and host crash per day.

Host reboot - i use last command and make sure the count.

How to catch the System Crash ?.

Please share the info if any.

Thanks

Hi,

Look at the '/var/log' for system information. Hopefully one of the logs will have enough information to guide to a solution.

Since you really didn't present enough information then I suggest that you look at 'How to Ask Questions the Smart Way' so in the future your queries provide information that will aid us in diagnosis of the problem.

Just a few links to aid you to gaining some understanding;

Linux Documentation Project
Rute Tutorial & Exposition
Linux Command Guide
Utimate Linux Newbie Guide
LinuxSelfHelp
Getting Started with Linux
Advanced Bash-Scripting Guide
Linux Home Networking


The above links and others can be found at 'Slackware-Links'. More than just Slackware® links!

You could monitor this machine from the outside using nagios or even pinging and then match with the system restarts from last command.. everytime your machine becommes unresponsive to your ping or nagios and it's not listed on reboot list, it means there was a crash.

You cannot catch the crash, but you can detect upon the next boot, that the previous run crashed, count it then.

To detect such an event you can write a script that looks at the previous log for the crash specific error messages.
Probably use grep to search /var/lastlog, or /var/dmseg for crash messages.
You can search for panic
You might have to change another script to copy any logs before the get wiped, or to insert a tag to help your search.
Put the script somewhere in the boot scripts (/etc/rc.d/rc.local)
The script can increment a count (how, I cannot think of a way right now).
Probably will have to create your own log (/var/log/crash_count ??)
to keep state.
You may have to move the normal logs (rename, etc.) each time after you check, so as to not recheck the same data twice.

This is just preliminary thinking on this, you will have to work out the details. I have not tried this before, and there may be some subtle problems.