Monitor Fileserver

Hans Engelen engelenh at gmail.com
Mon Feb 27 23:00:43 CET 2006


Ah, i see.

Question ... is there no SNMP access for these blackboxes ? Most blackboxes
do from my experience (though I usually steer clear of them so I haven't
used that many of them really).

SNMP access will most likely allow you to poll a fair number of interesting
metrics. Free space, network utilization, load ... that kind of thing.

Worth checking into should my other suggestion fail. Incidentally don't
forget to give the service-user enough rights to do its work, i.e. on the
share and also for other checks it might have to do or you might get other
unexplained errors. Start out with adding it to the local admins group to
test the general idea first (and get a baseline check) then bump it down to
normal user and add rights as you need. But I am sure you know that drill.

Cheers,
Hans


On 2/27/06, Josh <josh2780 at yahoo.com> wrote:
>
> Hans / Ryan,
>
> Thanks for your input...
>
> I thought the question might arise about "why don't I
> monitor the server housing the shares"... well, the
> problem there is the machine is a NetApp device (not
> running windows and won't allow me to install anything
> on it of course... it's an appliance).
>
> I've tried touching the /root/.smb/smb.conf...  the
> problem is most likely related to the nagios user
> can't even see inside /root.
>
> I like your idea of mapping the drives under the
> nagios user and then running the service as the nagios
> user... I'll give that a shot.
>
> On a side note, I did try getting the nrpe checks to
> work on the windows server but am getting the
> following error:
>
> "CScript Error: Execution of the Windows Script Host
> failed. (Catastrophic failure)"
>
> A little research shows it is most likely related to a
> software security policy in place.  Anyone on this
> list know what I need to change?
>
> Thanks again for all your help.
>
> Josh
>
> --- Hans Engelen <engelenh at gmail.com> wrote:
>
> > Dangit replied privately and not to the list, anyway
> > heres a forward.
> >
> > Also just checked the /root/.smb/smb.conf reference
> > is actually a workaround
> > for a problem with samba's libsmbclient in the perl
> > module
> > Filesys::SmbClient (used by check_smb_shares.pl).
> > Aparantly libsmbclient
> > segfaults if it does not exist. Therefor if it does
> > not exist the perl
> > module Filesys::SmbClient tries to make one (an
> > empty one) but has no
> > permission to do so from what you wrote. I supose
> > you could make it yourself
> > (touch /root/.smb/smb.conf; chmod og+r
> > /root/.smb/smb.conf). Maybe that will
> > solve your issues with that particular check
> > allowing you to use it to
> > monitor the remote shares you spoke of
> >
> > Cheers,
> > Hans
> >
> >
> > On 2/27/06, Hans Engelen <engelenh at gmail.com> wrote:
> > >
> > > For mapped drives that is quite normal since
> > mapped drives are, barring a
> > > small number of special cases, only accessible for
> > the user that did the
> > > actual mapping. It's the same problem you get for
> > other NT services trying
> > > to access a drive mapping made from another user.
> > Also most likely your
> > > pNSClient (or NC_Net or NSClient++) or whatever
> > agent you have running on
> > > the Windows box is running under the System
> > security setting. This security
> > > context is only valid for that windows box
> > internally and as such has no
> > > credentials to access anything beyond that
> > machine. This includes (but is
> > > not limited to) shares.
> > >
> > > Theoretically you could of course run your Nagios
> > Agent under an actual
> > > user account, log in interactively on that same
> > account and create a
> > > persistent mapping (net use * \\server\share
> > /persist:yes, if memory serves)
> > > to the shares in question. Since the service will
> > use the same profile when
> > > logging in that should solve the issue. But why
> > even monitor a remote disk
> > > in this way. Just install the Nagios Agent on the
> > server that houses the
> > > share and monitor it directly instead of
> > indirectly (with all the quirks and
> > > pitfalls that come with it).
> > >
> > > Of course in this case the check_smb_shares is a
> > solution too. As to why
> > > it insists on writing to /root/.smb/smb.conf is a
> > bit strange. Possibly this
> > > was defined somewhere in the check_smb_shares.pl
> > file. Open it up in a text
> > > editor and see.
> > >
> > > Cheers,
> > > Hans
> > > Cheers,
> > > Hans
> > >
> > > On 2/27/06, Ryan Wilcox <rwilcox at mobitrac.com>
> > wrote:
> > > >
> > > > yeah... i got the same error as you did with a
> > mapped drive. we aren't
> > > > monitoring any mapped drives right now, hence
> > the confusion.
> > > >
> > > > not sure about the mapped drives... anyone else
> > have an idea for josh?
> > > >
> > > > >> -----Original Message-----
> > > > >> From: Josh [mailto:josh2780 at yahoo.com]
> > > > >> Sent: Monday, February 27, 2006 11:38 AM
> > > > >> To: Ryan Wilcox;
> > nagios-users at lists.sourceforge.net
> > > > >> Subject: RE: [Nagios-users] Monitor
> > Fileserver
> > > > >>
> > > > >> Hmm...  Got it working for local drives on
> > the windows
> > > > >> box but I get an "Invalid drive" error from
> > the
> > > > >> check_nt script when I check a drive that is
> > mapped.
> > > > >> Any way to check networked drives on that
> > windows box?
> > > > >>  Or will I have to go with nrpe checks for
> > that?
> > > > >>
> > > > >> --- Ryan Wilcox <rwilcox at mobitrac.com> wrote:
> > > > >>
> > > > >> > actually i am using check_nt right from the
> > nagios
> > > > >> > (fedora core 4) box.
> > > > >> >
> > > > >> > ./check_nt -H 10.0.0.32 -v USEDDISKSPACE
> > -lc -w 75
> > > > >> > -c 90
> > > > >> >
> > > > >> > output looks like:
> > > > >> >
> > > > >> > c:\ - total: 74.52 Gb - used: 52.98 Gb
> > (71%) - free
> > > > >> > 21.54 Gb (29%) |
> > > > >> > 'c:\ Used
> > Space'=52.98Gb;55.89;67.07;0.00;74.52
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >> > >> -----Original Message-----
> > > > >> > >> From: Josh [mailto:josh2780 at yahoo.com]
> > > > >> > >> Sent: Monday, February 27, 2006 10:57 AM
> > > > >> > >> To: Ryan Wilcox;
> > > > >> > nagios-users at lists.sourceforge.net
> > > > >> > >> Subject: RE: [Nagios-users] Monitor
> > Fileserver
> > > > >> > >>
> > > > >> > >> I'm assuming you are using NRPE and
> > executing the
> > > > >> > >> check_nt_disk from a windows machine...
> > I might
> > > > >> > end
> > > > >> > >> up doing that.
> > > > >> > >>
> > > > >> > >> I was attempting to use smb checks
> > directly from
> > > > >> > the
> > > > >> > >> linux box running Nagios.
> > > > >> > >>
> > > > >> > >>
> > > > >> > >>
> > > > >> > >> --- Ryan Wilcox < rwilcox at mobitrac.com>
> > wrote:
> > > > >> > >>
> > > > >> > >> >
> > > > >> > >> >
> > > > >> > >> > >> -----Original Message-----
> > > > >> > >> > >> From:
> > > > >> > nagios-users-admin at lists.sourceforge.net
> > > > >> > >> > [mailto:nagios-users-
> > > > >> > >> > >> admin at lists.sourceforge.net] On
> > Behalf Of
> > > > >> > Josh
> > > > >> > >> > >> Sent: Monday, February 27, 2006
> > 10:19 AM
> > > > >> > >> > >> To:
> > nagios-users at lists.sourceforge.net
> > > > >> > >> > >> Subject: [Nagios-users] Monitor
> > Fileserver
> > > > >> > >> > >>
> > > > >> > >> > >> Does anyone have any suggestions as
> > to how
> > > > >> > to
> > > > >> > >> > monitor
> > > > >> > >> > >> network drive (fileserver) status
> > from
> > > > >> > Nagios?
> > > > >> > >> > I'm
> > > > >> > >> > >> trying to get the
> > check_smb_shares.pl (from
> > > > >> > >> > >> nagiosexchange.org) but keep
> > getting the
> > > > >> > >> > following
> > > > >> > >> > >> error when Nagios executes the
> > check:
> > > > >> > >> > >>
> > > > >> > >> > >> **ePN 'check_smb_shares.pl' Can't
> > create
> > > > >> > >> > >> /root/.smb/smb.conf : Permission
> > denied
> > > > >> > >> > >>
> > > > >> > >> > >> Not sure why when the Nagios binary
> > executes
> > > > >> > the
> > > > >> > >> > >> script it wants to use /root/
> > (Nagios runs
> > > > >> > as the
> > > > >> > >> > user
> > > > >> > >> > >> nagios).
> > > > >> > >> > >>
> > > > >> > >> > >> Any other suggestions on monitoring
> > network
> > > > >> > >> > drives?
> > > > >> > >> > >>
> > > > >> > >> >
> > > > >> > >> >
> >
> === message truncated ===
>
>
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