[hobbit] Hobbit client executing a script to be proactive if a problem occurs?

Fri Apr 11 19:11:00 CEST 2008

My local computer is Windows XP, using Putty to ssh into my Linux box
(which runs Hobbit).  VI on Linux, highlight, then cut-n-paste into an
Outlook 2003 reply to the Hobbit mailing list.  I have only noticed this
formatting problem when posting code to this Hobbit list.  It's probably
some text-only email line-wrap formatting option I have set in Outlook.
It's not an issue in HTML email (which I hate, but when in Rome, do as
the Romans do, and HTML email is what most everybody in my company
uses).  I had to grudging give up on Thunderbird and move to Outlook so
I could easily deal with all the other Windows-loving coworkers and
their Outlook calendar meeting invites.

I'll check my Outlook text settings again.  There's probably something
in there that I missed.

________________________________

From: Josh Luthman [mailto:josh at imaginenetworksllc.com] 
Sent: Friday, April 11, 2008 10:56 AM
To: hobbit at hswn.dk
Subject: Re: [hobbit] Hobbit client executing a script to be proactive
if a problem occurs?

Assuming you're using SSH - what SSH client are you pasting from?  The
formating would be put in the buffer from the client, not VI at all.

I use puTTY and the formatting works perfectly for me.

On Fri, Apr 11, 2008 at 12:51 PM, Haertig, David F (Dave)
<haertig at avaya.com> wrote:

	Sorry about the formating of the code I sent.  I don't know why
I can't
	successfully cut-n-paste from vi on Linux into Outlook on
Windows and
	not get screwed up format-wise.  I guess if you know Hobbit
alert syntax
	and PERL, they you can figure it out easy enough.

	-----Original Message-----
	From: Haertig, David F (Dave) [mailto:haertig at avaya.com]
	Sent: Friday, April 11, 2008 10:30 AM
	To: hobbit at hswn.dk

	Subject: RE: [hobbit] Hobbit client executing a script to be
proactive
	if a problem occurs?

	Here is how I execute a remote "pkill" on a client.  Replace
	"client_server" with your client hostname, and replace
"client_userid"
	with the userid (on the client) that you want to run the script
(pkill)
	under.  Also, set up ssh pubkey authentication between the
Hobbit server
	and client so that ssh does not prompt you for a password.

	hobbit_alerts.cfg:

	##############################
	$KILL_SCRIPT=/hobbit/server/ext/kill_script
	HOST=client_server SERVICE=procs COLOR=red
	       SCRIPT $KILL_SCRIPT
client_server,client_userid,grep_pattern
	##############################

	/hobbit/server/ext/kill_script:

	##############################
	#!/bin/perl
	#$debug++;      # Comment-out this line for normal operation
	($host, $userid, $pattern) = split(/,/, $ENV{RCPT}, 3); exit
unless
	((defined $host) && (defined $userid) && (defined $pattern));
$command =
	qq!ssh $userid\@$host "pkill -f '$pattern'"!; if ($debug) {
	       $command =~ s/pkill/pgrep -l/;
	       print `$command`;
	}
	else {
	       `$command`;
	}
	##############################

	And here is how I execute an arbitrary script on the client (in
this
	example, "weblogics_kill_script").  It is a minor modification
of the
	above:

	hobbit_alerts.cfg:

	##############################
	$REMOTE_SCRIPT=/hobbit/server/ext/remote_script
	HOST=ssdpws001 SERVICE=weblogics COLOR=red
	       SCRIPT $REMOTE_SCRIPT

client_server,client_userid,/export/home/hobbit/scripts/weblogics_kill_s
	cript
	##############################

	Note: weblogics_kill_script exists on the client - I use it to
force a
	few thread dumps, archive logfiles, and then kill/restart
weblogics

	/hobbit/server/ext/remote_script:

	##############################
	#!/bin/perl
	#$debug++;      # Comment-out this line for normal operation
	($host, $userid, $script) = split(/,/, $ENV{RCPT}, 3); exit
unless
	((defined $host) && (defined $userid) && (defined $script));
$command =
	qq!ssh $userid\@$host "$script"!; if ($debug) {
	       print `$command`;
	}
	else {
	       `$command`;
	}
	##############################

	-----Original Message-----
	From: Chris Wopat [mailto:chrisw at supranet.net]
	Sent: Friday, April 11, 2008 7:56 AM
	To: hobbit at hswn.dk
	Subject: [hobbit] Hobbit client executing a script to be
proactive if a
	problem occurs?

	Hello,

	I've been running hobbit for a few years, after converting from
Big
	Brother. I actively use it to monitor hundreds of hosts, send
alerts,
	etc. However, one thing I have yet to do is use any custom
scripts for
	anything. Looking at docs, I see two ways that scripts are
called:

	1) an alert can call a script instead of email directly. This
script is
	passed variables, and just about anything can be done *on the
hobbit
	server* from here.

	2) A script can be launched on the client, from ext/, when the
hobbit
	clien starts. This script is generally used to add another
column to
	hobbit.

	What I'd like to do is execute a script *on the client* when an
alert
	has happened. Say, if CPU goes red on something, I'd like a
script to
	run on the cilent. I could force the issue with #1 above, but
this seems
	like it would invovle the server having the script, likely
having SSH
	keys setup to get into the client, then run the script.

	Is there a cleaner way built in that will just say "if service
FOO is
	red then on client run script ext/BAR.sh"?

	Thanks
	--Chris

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-- 
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373

Those who don't understand UNIX are condemned to reinvent it, poorly.
--- Henry Spencer 
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