Re: How to shoot yourself in the foot: kill -9 postmaster

Tom Lane wrote:
> 
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > killproc should send a kill -15 to the process, wait a few seconds for
> > it to exit.  If it does not, try kill -1, and if that doesn't kill it,
> > then kill -9.
> 
> Tell it to the Linux people ... this is their boot-script code we're
> talking about.

RedHat, in particular.  I can't vouch for any others.

On my RH 6.2 box, with initscripts-5.00-1 loaded, here's what killproc
does if no killlevel is set (even though a default $killlevel is set to
-9, it's not used in this code):
($pid is the pid of the proc to kill, $base is the name of the proc,
etc)
  if [ "$notset" = "1" ] ; then     if ps h $pid>/dev/null 2>&1; then        # TERM first, then KILL if not dead
kill-TERM $pid        usleep 100000        if ps h $pid >/dev/null 2>&1 ; then           sleep 1           if ps h $pid
>/dev/null2>&1 ; then              sleep 3              if ps h $pid >/dev/null 2>&1 ; then                 kill -KILL
$pid             fi           fi        fi     fi     ps h $pid >/dev/null 2>&1     RC=$?     [ $RC -eq 0 ] && failure
"$baseshutdown" || success "$base
 
shutdown"     RC=$((! $RC))     # use specified level only else     if ps h $pid >/dev/null 2>&1; then        kill
$killlevel$pid        RC=$?        [ $RC -eq 0 ] && success "$base $killlevel" || failure "$base
 
$killlevel"     fi fi


Is 6.1 this different from 6.2?  This code on the surface seems
reasonable to me -- am I missing something?  The 6.2 code (found in
/etc/rc.d/init.d/functions, for those who might not know where to find
killproc) sets a default killlevel but never uses it -- ignorant but not
stupid.
--
Lamar Owen
WGCR Internet Radio
1 Peter 4:11