[Nagiosplug-help] Questions using negate?

Rick . rickm106 at hotmail.com
Thu Mar 20 17:22:14 CET 2003
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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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>
>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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