[Nagiosplug-help] Questions using negate?

Subhendu Ghosh sghosh at sghosh.org
Fri Mar 21 08:29:07 CET 2003
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I blush - but Karl/Ton did the actual patch to get negate working...

-sg

On Fri, 21 Mar 2003, Rick . wrote:

> Thank you very much, and thanks to Subhendu for your ongoing assistance. 
> This has saved me having to buy a product and run it along side nagios for 
> the purpose of checking for multiple words in a string.
> 
> I look forward to a long association with this product.
> 
> Thanks again,
> 
> Rick.
> 
> >From: "Voon, Ton" <Ton.Voon at egg.com>
> >To: 'Subhendu Ghosh' <sghosh at sghosh.org>, 
> >Nagiosplug-help at lists.sourceforge.net
> >Subject: RE: [Nagiosplug-help] Questions using negate?
> >Date: Tue, 18 Mar 2003 13:52:47 -0000
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> >FILETIME=[DC41D460:01C2ED55]
> >
> >Managed to have a play at cfpopen and here are the results:
> >
> >A) RIGHT
> >$ ./negate /usr/bin/grep Network /etc/services
> ># Network services, Internet style
> >nntp            119/tcp         usenet          # Network News Transfer
> >ntp             123/tcp                         # Network Time Protocol
> >ntp             123/udp                         # Network Time Protocol
> >
> >B) WRONG (the " are lost)
> >$ ./negate /usr/bin/grep "Network Time" /etc/services
> >grep: can't open Time
> >/etc/services:# Network services, Internet style
> >/etc/services:nntp            119/tcp         usenet            # Network
> >News Transfer
> >/etc/services:ntp               123/tcp                         # Network
> >Time Protocol
> >/etc/services:ntp               123/udp                         # Network
> >Time Protocol
> >
> >C) WRONG (same as above)
> >$ ./negate /usr/bin/grep 'Network Time' /etc/services
> >grep: can't open Time
> >/etc/services:# Network services, Internet style
> >/etc/services:nntp            119/tcp         usenet            # Network
> >News Transfer
> >/etc/services:ntp               123/tcp                         # Network
> >Time Protocol
> >/etc/services:ntp               123/udp                         # Network
> >Time Protocol
> >
> >D) RIGHT
> >$ ./negate '/usr/bin/grep "Network Time" /etc/services'
> >ntp             123/tcp                         # Network Time Protocol
> >ntp             123/udp                         # Network Time Protocol
> >
> >E) RIGHT
> >$ ./negate "/usr/bin/grep 'Network Time' /etc/services"
> >ntp             123/tcp                         # Network Time Protocol
> >ntp             123/udp                         # Network Time Protocol
> >
> >The only benefit is case D. Is it worth a switch over? Maybe the only 
> >change
> >is to provide better instructions on using case E and a better error 
> >message
> >if double quotes exist.
> >
> >Any comments?
> >
> >Ton
> >
> > > -----Original Message-----
> > > From:	Voon, Ton [SMTP:Ton.Voon at egg.com]
> > > Sent:	Tuesday, March 18, 2003 12:31 PM
> > > To:	'Subhendu Ghosh'; Nagiosplug-help at lists.sourceforge.net
> > > Subject:	RE: [Nagiosplug-help] Questions using negate?
> > >
> > > I think there is a problem in spopen which affects negate and other
> > > plugins
> > > where external command calls with double quotes do not work correctly.
> > >
> > > RIGHT (no spaces in command)
> > > $ negate /usr/bin/grep Network /etc/services
> > > # Network services, Internet style
> > > nntp            119/tcp         usenet          # Network News Transfer
> > > ntp             123/tcp                         # Network Time Protocol
> > >
> > > WRONG (spaces lost when passed to spopen - I think it is running a grep
> > > against a file called Time, then /etc/services)
> > > $ negate /usr/bin/grep "Network Time" /etc/services
> > > /etc/services:# Network services, Internet style
> > > /etc/services:nntp            119/tcp         usenet            # 
> >Network
> > > News Transfer
> > > /etc/services:ntp               123/tcp                         # 
> >Network
> > > Time Protocol
> > >
> > > WRONG (same as above)
> > > $ negate /usr/bin/grep 'Network Time' /etc/services
> > > /etc/services:# Network services, Internet style
> > > /etc/services:nntp            119/tcp         usenet            # 
> >Network
> > > News Transfer
> > > /etc/services:ntp               123/tcp                         # 
> >Network
> > > Time Protocol
> > >
> > > WRONG (spopen returns NULL if " found in the command line)
> > > $ negate '/usr/bin/grep "Network Time" /etc/services'
> > > Could not open pipe: /usr/bin/grep "Network Time" /etc/services
> > >
> > > RIGHT (spopen doesn't mind ' and the shell has kept the spaces in 
> >between)
> > > $ negate "/usr/bin/grep 'Network Time' /etc/services"
> > > ntp             123/tcp                         # Network Time Protocol
> > >
> > > I'll look into using cfpopen (http://www.cfengine.org) to see if that 
> >will
> > > help, but it will take me ages!
> > >
> > > Ton
> > >
> > > > -----Original Message-----
> > > > From:	Subhendu Ghosh [SMTP:sghosh at sghosh.org]
> > > > Sent:	Tuesday, March 18, 2003 3:11 AM
> > > > To:	Nagiosplug-help at lists.sourceforge.net
> > > > Subject:	RE: [Nagiosplug-help] Questions using negate?
> > > >
> > > > I thinks you need backslash to escape not forward slash...
> > > >
> > > > -s \"word1 word2\"
> > > >
> > > > -sg
> > > >
> > > > On Tue, 18 Mar 2003, Rick . wrote:
> > > >
> > > > > Thanks Subhendu,
> > > > >
> > > > > The plugin works a lot better. My only problem now is that i need to
> > > use
> > > > the
> > > > > -s command to check for a string of text using check_http. The 
> >string
> > > > needs
> > > > > to be two words.
> > > > > When i put the two words in the quotes "word1 word2" with check_http
> > > > only,
> > > > > the command works fine. But as soon as i negate the check_http
> > > command,
> > > > it
> > > > > doesn't work with more than one word in the string.
> > > > > I have tried -s /"word1 word2/" etc but unfortunately it isn't
> > > working.
> > > > >
> > > > > Is there any way to do this?
> > > > >
> > > > > Thanks alot!
> > > > >
> > > > > Rick :)
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > >From: Subhendu Ghosh <sghosh at sghosh.org>
> > > > > >To: Nagiosplug-help at lists.sourceforge.net
> > > > > >Subject: RE: [Nagiosplug-help] Questions using negate?
> > > > > >Date: Fri, 14 Mar 2003 19:10:05 -0500 (EST)
> > > > > >
> > > > > >
> > > > > >There was a recent patch applied on negate - you might want to grab
> > > the
> > > > > >latest version of negate from CVS...
> > > > > >
> > > > > >-sg
> > > > > >
> > > > > >On Thu, 6 Mar 2003, Rick . wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > I downloaded and tested this plugin, and i am having the same
> > > > problem.
> > > > > > >
> > > > > > > The plugin is always giving an OK, whether the negated plugin is
> > > OK
> > > > or
> > > > > > > CRITICAL.
> > > > > > >
> > > > > > > Does anybody know how to fix this?
> > > > > > >
> > > > > > > Thanks,
> > > > > > >
> > > > > > > Rick.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > >From: Rose David <DRose at snyderdrug.com>
> > > > > > > >To: Nagiosplug-help at lists.sourceforge.net
> > > > > > > >Subject: RE: [Nagiosplug-help] Questions using negate?
> > > > > > > >Date: Wed, 5 Mar 2003 11:38:13 -0600
> > > > > > > >
> > > > > > > >Thank you for your response and input.  I have now used your
> > > script
> > > > and
> > > > > >it
> > > > > > > >has gotten me farther along than I have been able to this 
> >point.
> > > > Here
> > > > > >is
> > > > > > > >the catch.  When I run this on the command line, it works just 
> >as
> > > > > > > >advertised, switching the return codes from 2 to 0 or from 0 to
> > > 2.
> > > > > > > >However,
> > > > > > > >when I run it in nagios as a command, either a Critical or an 
> >OK
> > > > state
> > > > > >on
> > > > > > > >the check_ping shows up as OK.  Using the same command, I get 
> >the
> > >
> > > > > >following
> > > > > > > >two results:
> > > > > > > >
> > > > > > > >Status		Status Information
> > > > > > > >OK			CRITICAL - Plugin timed out after 10 seconds
> > > > > > > >OK			PING OK - Packet loss = 20%, RTA = 245.95 ms
> > > > > > > >
> > > > > > > >Any further input as to what I might do to get this to work?
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > > We re-wrote negate as a simple perl script.  I have tried 
> >your
> > > > > > > > > check_ping input with my version of negate and here is what 
> >I
> > > > get:
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > root at lxxxx:[/home/nagios/etc]: 
> >/home/nagios/libexec/new-negate
> > > > > > > > > /home/nagios/libexec/check_ping -H auspap01 -w 1000.0,100% 
> >-c
> > > > > > > > > 1000.0,100% -p 5
> > > > > > > > > Command is: /home/nagios/libexec/check_ping -H host01 -w
> > > > > > > > > 1000.0,100% -c
> > > > > > > > > 1000.0,100% -p 5PING OK - Packet loss = 0%, RTA = 4.62 ms
> > > > > > > > > Return code is 0
> > > > > > > > > root at lapin:[/home/nagios/etc]: echo $?
> > > > > > > > > 2
> > > > > > > > >
> > > > > > > > > The first return code is the actual return from the 
> >check_ping
> > >
> > > > > >plugin,
> > > > > > > > > the second $? output is the negated output.  Since 
> >check_ping
> > > > > >produces
> > > > > > > > > multiple return codes depending on the result, it is
> > > > > > > > > difficult to use a
> > > > > > > > > generic negate plugin.  I have included our version of the
> > > > plugin
> > > > > > > > > "new-negate.  Hope this helps..
> > > > > > > > >
> > > > > > > > > Good luck
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > John Cockerham
> > > > > > > > > Sr. Network Administrator
> > > > > > >
> > > > > > >
> > > > > > > 
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