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Killing process on remote server

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# 1  
Old 11-03-2014
Killing process on remote server
Hi guys,

I am trying to write a script that logs into a remote server as root and greps a particular process, awks its PID and then xargs kill -9 .

This is the actual command :

Code:
for i in `cat nodes.txt`
do
ssh root@$i 'ps -ef | grep puppet | grep -v grep | awk "{print $2}" |  xargs kill -9 '
done

It is not working as expected.

When I try to do ;

Code:
jan@server1 ~/scripts $ ssh root@server2 'ps -ef | grep puppet | grep -v grep |awk "{print $2}" '

I get :

Code:
root     10090 10089  0 Nov01 ?        00:00:00 /opt/puppet/bin/ruby /opt/puppet/bin/puppet agent --onetime --ignorecache --no-daemonize --no-usecacheonfailure --detailed-exitcodes --no-splay

It does not seem to be awking the PID # .

Does any one know the issue with the Syntax ?

Regards
# 2  
Old 11-03-2014
Quote:
Originally Posted by Junaid Subhani
Does any one know the issue with the Syntax ?
awk's program text definitely needs to be within single quotes, try
Code:
ssh root@server2 "ps -ef | grep puppet | grep -v grep |awk '{print $2}' "

# 3  
Old 11-03-2014
Seems like the same result.

Code:
jan@server1 ~ $ ssh root@server2 "ps -ef | grep puppet | grep -v grep |awk '{print $2}' "

Code:
root     10090 10089  0 Nov01 ?        00:00:00 /opt/puppet/bin/ruby /opt/puppet/bin/puppet agent --onetime --ignorecache --no-daemonize --no-usecacheonfailure --detailed-exitcodes --no-splay

Regards
# 4  
Old 11-03-2014
Try:

Code:
$ ssh root@server2 "ps -ef | grep puppet | grep -v grep |awk '{print \$2}' "

Or:

Code:
$ ssh root@server2 <<"EOF"
ps -ef | grep puppet | grep -v grep |awk '{print $2}'
EOF

This User Gave Thanks to Chubler_XL For This Post:
Junaid Subhani
# 5  
Old 11-03-2014
man pkill

Hopefully there's never a user "puppet" on any of those machines...
This User Gave Thanks to achenle For This Post:
Junaid Subhani
# 6  
Old 11-03-2014
Code:
$ ssh root@server2 "ps -ef | grep puppet | grep -v grep |awk '{print \$2}' "

This worked perfectly fine. Thank you !
# 7  
Old 11-03-2014
You should also try and avoid using kill -9 unless it is a last resort as this signal doesn't allow the process any opportunity to cleanup/save open files/flush buffers and the like.

Best practice is to use kill -15 which is basically a "request" for the process to close. If the process doesn't respond to this "request" in a timely manor then you can assume it is "stuck" and use kill -9.
This User Gave Thanks to Chubler_XL For This Post:
Junaid Subhani
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