parameters for service checks from outside nagios

[Carroll, Jim P [Contractor]]

I'm going to go on a bit of a tangent here.  Maybe what you're interested in doing is to have the datfiles consistent and up-to-date, and not test whether they are or not.  Sure, the test would be valuable, but it might be redundant.  Allow me to illustrate....

Set up an rsync server internally.  (It doesn't have to be anywhere; in fact, if you can keep it on a separate server, all the better.)  Always put the latest/greatest datfile on your rsync server.  Run a cronjob as frequently as you'd like (once a day, once an hour, whatever) on your rsync server to grab the latest datfile from the Internet.  Also set up cronjobs on each of your hosts (where the datfile needs to be kept up-to-date) to use the rsync protocol to grab this very same datfile from your rsync server and install locally.

Rsync is very good at optimizing traffic.  I don't think I could give a good enough description of it here.

Another approach would be to set up cfengine.  There may be others.

To save possible repetition, I recommend you check out www.infrastructures.org.

HTH.

jc


> -----Original Message-----
> From: Lennard Bakker [mailto:bakkerl at lamp.xs4all.nl]
> Sent: Thursday, January 02, 2003 6:18 PM
> To: Carroll, Jim P [Contractor]; nagios-users at lists.sourceforge.net
> Subject: RE: [Nagios-users] parameters for service checks from outside
> nagios
> 
> 
> nagios-users at lists.sourceforge.netOn Thu, 2003-01-02 at 
> 17:45, Carroll,
> Jim P [Contractor] wrote:
> > I'm not entirely sure how you're retrieving the datfiles, 
> but it might make
> > sense to run a plugin locally on the remote systems in 
> question.  This
> > plugin would scrub the datfile (eg, with grep); the result 
> of this plugin
> > would be returned to Nagios.
> The version is retreived by grepping, cutting, some awk and some other
> tools on the output of the virusscanner version info. This is not the
> problem.
> 
> The problem is how to let the plugin know what the current (uptodate)
> version is. I want to result the plugin OK if uptodate, WARNING on 1
> versions behind, ERROR on all other results.
> 
> The plugin is capable of getting the current used version, 
> now i have to
> let it compare to the latest version. This information can be 
> fetched of
> the internet, but if all hosts gets the information on every 
> check, this
> would consumps a lot of bandwidth.
> The information of the latest version is also known on the 
> nagios host.
> So if the information (versionnumber) can be given to the remote host,
> the plugin can also get his result (without fetching extra information
> of the internet).
> 
> > Of course, I'm making some wild assumptions about your 
> environment, such as
> > the system that hosts your datfiles is a *nix host.  If 
> it's Windows, I'm
> > not entirely certain how you'd do it.  Still, you could 
> install OpenSSH and
> > Perl on your Windows servers to facilitate this sleight of hand.
> It is all Linux based. All windows checks are fase 2 for me.. ;-)
> 
> > In case I haven't been clear, you would be best off to 
> write your own plugin
> > to do this.
> The current check is a own written shell-script plugin. But 
> this plugin
> fetches the info from the internet. 
> 
> I did try some thing..
> method 1: check_nrpe!check_datfile
> This gets the latest information from the internet.
> 
> method 2: check_by_ssh!"/bin/nagios/libexec/check_datfile2 4240"
> With this method, the latest version is given to the remote host, and
> not from the internet (here 4240). But this is now static in the
> configuration file. I can't get this information variable 
> (readed from a
> file or something, before it is passed to a remote host).
> 
> 
> The only solution i can see now, is to call a local plugin on the
> nagios-host. This shell scripts than uses nagios plugins 
> (check_by_ssh,
> or check_nrpe) to get some result from a remote host, and 
> calculate the
> result.
> This solution is not wanted due to resoures on the nagios-server.
> 
> With greets,
> 
> Lennard Bakker
> 
> > 
> > jc
> > 
> > > -----Original Message-----
> > > From: Lennard Bakker [mailto:bakkerl at lamp.xs4all.nl]
> > > Sent: Tuesday, December 31, 2002 4:26 PM
> > > To: nagios-users at lists.sourceforge.net
> > > Subject: [Nagios-users] parameters for service checks from outside
> > > nagios
> > > 
> > > 
> > > 
> > > Is it possible to import variable date to use with a 
> service check?
> > > 
> > > My problem:
> > > I want to let nagios to check anti virus datfiles on remote 
> > > systems. Now
> > > i do this dat each remote system fetch the latest version 
> info (800k)
> > > and verifies the version info, to the installed version 
> (no update is
> > > done). The plugin reports OK if datfile is uptodate, 
> warning when 1
> > > version behind and ERROR if more than 1 version behind 
> (or installed
> > > version is newer then the official downloadable).
> > > 
> > > The problem is that every client fetches the 800k just 
> for verify the
> > > version number (4 bytes number).
> > > 
> > > I have the lastest version info on the nagios host system 
> (in a file,
> > > just 4 bytes in size). Is it possible to add this info 
> from a file to
> > > the service check, so that the version number is given to te 
> > > remote host
> > > (by nrpe or chack_by_ssh). The remote host doesn't have 
> to access a
> > > remote host (internet) for the current information.
> > > 
> > > Lennard
> > > 
> 
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