Shell Script to find out if a process is running on any all machines
Hi All, I have been a guest visitor from a long time and this forum is wonderful. I finally am a member of this forum too, so i am here stuck with a shell script that i was trying to write
My requirement is that i should be able to create a shell script which will check if a process is running on this machine and any other machines too i.e if i am trying to start a app on server3 it should first check if the app is already started on server1 and server2 if not then it should start this app on server3 else it should exit.
I tried using the script to create lock file to do the same but was not sure if that would, for an idea i will post that script here. please help me out guys, thank you!!!
Code:
CreateLockFile () {
unset PROCESS_ID
unset ID
LFILE=${TEMP_PATH}/${1}_${TODAYS_DATE}.LCK
ID=$2
if [ -r ${LFILE} ]
then
OPID=`cat ${LFILE}` 2> /dev/null
if [ -z ${OPID} -eq 0 ] #Make Sure OPID contains a value
then
exit ${FAILURE} "ERROR-APP-->: `basename ${LFILE}` exists but contains no
Process ID" | tee -a ${INLOG}
else
PROCESS_ID=`ps -p ${OPID} | grep ADD-SCRIPT-NAME-HERE | awk -F" " '{print $1}'
2> /dev/null`
if [ ${PROCESS_ID} ] #Lock File is there, check if process is actually
running
then
echo "WARNING-->: ${1} Script Is Currently Running [PID=${OPID}], Exiting.
${DATE_TIME}" | tee -a ${INLOG}
exit ${SUCCESS}
else
echo "INFO-->: Old Lock File with PID= [ ${OPID} ] Exists But Process Is Not
Running. " >> ${INLOG}
echo "INFO-->: Overwriting Old PID with New PID Value of [ ${ID} ] " >>
${INLOG}
echo "$ID" > ${LFILE}
fi
fi
else
echo "$ID" > ${LFILE}
if [ $? -ne 0 ]
then
exit ${FAILURE} "ERROR-APP-->: Could Not Create Lock File - Exiting " | tee -a
${INLOG}
fi
fi
}
Moderator's Comments:
Use code tags please, thanks.
Last edited by zaxxon; 02-14-2013 at 10:09 AM..
Reason: code tags
To clear the web cache on my web server, I run this command:
find $APACHE_HOME/cache/plsql/plsql -type d -name "*" -exec rm -R {} \;
To clear the cache on all the web servers(we have 4), I log on to any one machine, clear its cache, ssh to another machine, clear cache etc;
Is there any way... (8 Replies)
Hi All,
The scenario is like this:
There is a process say "A" which create a child process say "B" if some condition is true and process "A" terminates. "B" invokes some C program say "C" using 'execl' function. The job of program "C" is to keep polling the server until the server will be up.... (2 Replies)
I want to write a unix shell script that will check if a process (say debu) is running in the server or not. If no , then send a mail to the corresponding person to start the process??? (2 Replies)
OS: Unix or Linux
I (only) know the pid of the process which was running earlier (say 5 hrs back) but it is not running now.
Is there a way I could find the details of that process? (atleast the name of the process). Please let me know. (2 Replies)
Hello all,
I would be happy if any one could help me with a shell script that would determine all the processes running on a Unix server and post a mail if any of the process is not running or aborted.
Thanks in advance
Regards,
pradeep kulkarni.
:mad: (13 Replies)
Ok, so here is what I am looking for..
Shell script that uses find to look for one days worth of data using the modified date and then copies only those files to a specified directory.
I figured I could use grep and the find command to do this. It seems to work just fine from what I can... (4 Replies)
Hi, i was looking for an answer for some trouble im having runing a script in the cron, thing is, that when i run it manually it works just fine. But when cron runs it, it just doenst work. I saw a reply on a similar subject, suggesting that the . .profile worked for you, but im kind of... (9 Replies)
hi,
Am a newbie to unix and wasnt able to write script to my requirement.
I need a shell script, which should find a process by name and kill it. For eg: let the process name be "abc". I have different processes running by this name(abc), so should kill them all.
Condition would be: if... (7 Replies)
Team,
I would like to know, if we have any command in Solaris to verify, if some process is listening on a port on a set of machines.
for eg: Wrote the below script, and found that when a process is listening on that port, then it just waits there and doesnt come out. Rather, I would like... (6 Replies)
Hi all,
As i am new to shell script.Please help me to write a Shell script to find out process name that are running for last 10 days.
Thank's in advance. (8 Replies)
Discussion started by: manas_1988
8 Replies
LEARN ABOUT OSX
cpanplus::shell
CPANPLUS::Shell(3pm) Perl Programmers Reference Guide CPANPLUS::Shell(3pm)NAME
CPANPLUS::Shell - base class for CPANPLUS shells
SYNOPSIS
use CPANPLUS::Shell; # load the shell indicated by your
# config -- defaults to
# CPANPLUS::Shell::Default
use CPANPLUS::Shell qw[Classic] # load CPANPLUS::Shell::Classic;
my $ui = CPANPLUS::Shell->new();
my $name = $ui->which; # Find out what shell you loaded
$ui->shell; # run the ui shell
DESCRIPTION
This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS"
shell.
Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic
loading class), so please consult the documentation of your shell of choice.
BUG REPORTS
Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>.
AUTHOR
This module by Jos Boumans <kane@cpan.org>.
COPYRIGHT
The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved.
This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.
SEE ALSO
CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp
perl v5.16.2 2012-10-11 CPANPLUS::Shell(3pm)
02-14-2013
