NAME
roguehunter
- identify and terminate rogue processes
SYNOPSIS
roguehunter
[
-c
<config_file>
] [
-d
] [
-m #
] [
-v
]
AVAILABILITY
roguehunter
is a Bourne shell script which should work equally well on all versions of UNIX,
Linux and even bloody UnixWare.
DESCRIPTION
The
roguehunter
is at present server specific. Tests to identify rogue processes are hard
coded into the script.
The script attempts to kill processes with SIGHUP in order allow a clean termination. No attempt is made to use SIGKILL if termination fails.
A terse record of the attempted kills are maintained in the log file.
/var/log/roguehunter<#>.
OPTIONS
-c
<configuration_file>
The configuration file is at present unused.
-d
The debug mode echos all actions to standard error.
-m #
Set the maximum time in minutes that a process may occupy the CPU before it
catches the attention of
roguehunter.
In the abscence of a
-m
option the default maximum time is 50.
-v
Verbose mode, the script will run with the
-x
option set.
EXAMPLES
Identify rogue processes (cpu hogs) on the current host using the criteria hard coded
in the script and terminate them.
As above but echo each line to standard error.
FILES
roguehunter.cf.
BUGS
The script has very little input error checking.
.SH HISTORY
The script was created to deal with extreme process hogs created by
Mega
on a
Caldera Open Unix
host. Access to the system is achieved through
terminal emulation from PCs. I suspect that the PCs are shutdown without
ending the telnet/ssh session and that as a consequence, SIGHUP is never
sent to the host. When the telnet session is broken the login process is
attached to
init
and the application process smn12 becomes a process
hog. The script therefore is essentially concerned with processor hogs
identified as smn12 and the associated
ksh
login although it could
be easily modified to use a config script which identified other target
names. Other processes that are identified as a potential problem are
added to the log files for further consideration.
AUTHOR
Clifford W Fulford, City Linux. Contact fulford@fulford.net or +44 (0)793 572 8612
