Hi All,
I have written a little script which I want to monitor the cpu load of the server it is on and email me if the loads gets too high. I am having some difficulty doing this because I am trying to read the current CPU loads from /proc/loadavg virtual file, but im having trouble actually using the output, as I only want to use the first number which represents the current load ... here is what I have, any help would be greatly appreciated. 
#!/usr/bin/perl
%config = (
# a) Server name
        server => 'Server',
# b) Notification Email
        email => 'me@me.com',
# c) Alert level (when system load > ?)
        alert => '5'
);
system("cat /proc/loadavg");
while (<STDIN>) {
        push @loads, $_;
}
@loads = split(/ /);

if ($loads[1] > $config{'notify'}) {
    # Alert !! :)
    print "@loads";
    print "System [Alert]   Current Load = $loads[1]\n\n";
   &notify();
} else {
    print "System [OK]      Current Load = $loads[1]\n\n";
}
sub notify {
      $time = system("/bin/date");
        open (MAIL, "|/usr/sbin/sendmail -t");
                print MAIL "To: $config{'email'}";
                print MAIL "From: Load Monitor";
                print MAIL "Subject: ALERT High Load";
                print MAIL "Server Alert (Server Name $config{'server'
+})";
                print MAIL "Time: $time";
                print MAIL "$config{'server'} has exceeded the load al
+ert of $config{'alert'}";
        close(MAIL);
}

[download]


Thanks for any advice.

John

In reply to Load Monitor by Anonymous Monk

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