[stunnel-users] Problem with pidfile

Jochen Bern Jochen.Bern at LINworks.de
Thu May 29 18:54:50 CEST 2014


(Sorry for the shot quoting+references, but only Brians reply to the
mail I want to reply to made it to my mailbox ...)

> On May 28, 2014 5:48 PM, <reg14 at rambler.ru> wrote:
>> stop is successful, but pidfile is not removed. Then it becomes
>> impossible to determine whether stunnel is running or not.

(As far as the GNU version of "kill" goes, a "kill -0 $PID" will tell
you whether a process with that PID still exists; I've seen that used in
some init.d scripts. Not foolproof, of course.)

>> I think that truncating pidfile in an init.d
>> script is more reliable sign that service is stoped as compared with
>> deleting pidfile. init.d sctipts are probably the more appropriate place
>> to manipulate pidfile.

Heavens *no*! init.d etc. scripts that fail to actually remove the
process they're supposed to stop exist. Also, terminating processes
*without* going through "the appropriate" script is way too easy - from
a typo in a "kill" command to ambiguities like "/etc/init.d/httpd vs.
apachectl" to genuine abortion (SIGSEGV etc.) to things like the
oomkiller running amok on a cluster we're setting up these days.

Regards,
								J. Bern
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