Dead System Processes
In this example, we report dead system processes.
The ProcessSystemDead script might send an alert message like the following:
PIKT ALERT Wed Oct 3 07:08:06 2002 athens2 URGENT: ProcessSystemDead Report or restart 'dead' crucial system processes The process 'syslogd' is not running
ProcessSystemDead makes reference to the =process_system_obj macro, which resolves to the name of the ProcessesSystem.obj file. The script follows.
ProcessSystemDead init status =piktstatus level =piktlevel task "Report or restart 'dead' crucial system processes" input file "=process_system_obj" seps ":" dat $pr1  dat $pr2  dat $cmd  rule set #norun = #false() rule if $pr2 ne "" set $c = $command("=psall | =egrep '$pr2.+$pr1' | =grep -v grep") if $c eq "" set #norun = #true() #ifdef debug =outputproc(mail, "=psall") output mail "\$pr1 is $pr1" output mail "\$pr2 is $pr2" output mail "\$cmd is $cmd" output mail "\$c is $c" #endifdef endif else if #pid($pr1) == #nil() set #norun = #true() endif endif rule if #norun if $cmd eq "." output mail "The process '$pr1' is not running" else =execwait $cmd endif endif
This is just one program example. You could add rules, or write new scripts, for example to: report and possibly kill runaway processes, report unusually high counts of per-user processes, report and possibly kill forbidden processes, report extremely high numbers of zombie and defunct processes, log special process accounting data, etc.
For more examples, see Samples.