[Solved] How to remove / kill defunct processess? Post: 302411070

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Operating Systems HP-UX [Solved] How to remove / kill defunct processess? Post 302411070 by jgt on Wednesday 7th of April 2010 01:26:44 PM

04-07-2010

Registered User

This issue seems to be caused by users closing Windows terminal emulation sessions without first signing off, (clicking on the X before exiting the session.)
On SCO systems, these "ghost" sessions tend to consume all the available CPU trying to re-connect.
I wrote the following script to deal with this issue, but it should be used with caution.
On SCO systems telnet sessions are named ttypnn, on HP-UX it appears they are named pts/nnn.

Code:

#!/bin/ksh
if [ $# -eq 0 ]
then
echo Usage is delete.ghosts  Y or N
exit 1
fi
ps -leaf |grep ttyp >/tmp/ps.list
who >/tmp/user.list
LIST=; export LIST
separator=" "
while read a tty c 
do
LIST=$LIST$separator$tty
separator=" |"
done </tmp/user.list
grep -v "?" </tmp/ps.list |grep -v root |\
grep -E -v "$LIST" >/tmp/ghost.list
while read a b user pid e f
do
if [ $1 = Y ]
then
echo for real $user $pid
echo kill -9 $pid
#kill -9 $pid
else
echo test run $user $pid
echo kill -9 $pid
fi
done </tmp/ghost.list
#

jgt

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rt-clean-sessions-4

rt-clean-sessions(8)					     Request Tracker Reference					      rt-clean-sessions(8)

NAME

       rt-clean-sessions - clean old and duplicate RT sessions

SYNOPSIS

	    rt-clean-sessions [--debug] [--older <NUM>[H|D|M|Y]]

	    rt-clean-sessions
	    rt-clean-sessions --debug
	    rt-clean-sessions --older 10D
	    rt-clean-sessions --debug --older 1M
	    rt-clean-sessions --older 10D --skip-user

DESCRIPTION

       Script cleans RT sessions from DB or dir with sessions data.  Leaves in DB only one session per RT user and sessions that aren't older than
       specified(see options).

       Script is safe because data in the sessions is temporary and can be deleted.

OPTIONS

       older
	   Date interval in the "<NUM>[<unit>]" format. Default unit is D(ays), H(our), M(onth) and Y(ear) are also supported.

	   For example: "rt-clean-sessions --older 1M" would delete all sessions that are older than 1 month.

       skip-user
	   By default only one session per user left in the DB, so users that have sessions on multiple computers or in different browsers will be
	   logged out.	Use this option to avoid this.

       debug
	   Turn on debug output.

NOTES

       Functionality similar to this is implemented in html/Elements/SetupSessionCookie ; however, that does not guarantee that a session will be
       removed from disk and database soon after the timeout expires.  This script, if run from a cron job, will ensure that the timed out
       sessions are actually removed from disk; the Mason component just ensures that the old sessions are not reusable before the cron job gets
       to them.

perl v5.14.2							    2013-05-22						      rt-clean-sessions(8)

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