RE: [Devmon] problem getting devmon to work

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Okay, I've added this to the top of the "docs/INSTALLATION" file:
=20
<snip>
 A quick Devmon overview
---------------------------------------------------------------------
  The way Devmon works is fairly simple.  Here's the gist of it:
  1. An outside process (most likely devmon running with the
     --readbbhosts flag) updates the Devmon database from the
     Hobbit or BigBrother bb-hosts file.
     In a single-node installation, the Devmon database is stored
     in the 'hosts.db' file.  In a multi-node installation, it
     is kept in a MySQL database.
  2. Devmon reads in its templates.  A single-node installation
     reads the templates from disk at the beginning of every
     polling cycle.  The multi-node version reads the templates
     from the database, but only if they have been updated/changed
     since the last time it read them.
  3. Devmon does SNMP queries on all of the devices in its database.
     SNMP queries are optimized so that if the same SNMP OID is
     specified in multiple tests for a device, it is only queried
     once.
  4. Devmon applies template logic against the returned SNMP data.
     The involves doing transforms, applying thresholds, and then
     finally rendering the message to be sent to the display server.
  5. Devmon sends the rendered messages to the Display server.
  6. Devmon sleeps for any remaining time in the poll cycle.
  7. Return to step #1 (although the interval at which your
     external process updates your devmon database might not
     be the same as your poll interval, so Devmon might actually
     go to step #2 at this point).
</snip>
=20
And changed the devmon "usage" statement to appear as follows:
=20
<snip>
Usage: devmon [arguments]

  Arguments:
   -c    Specify alternate config file (i.e. -c /etc/devmon.cfg)
   -f    Run in foreground.  Prevents running in daemon mode.
   -p    Print message.  Don't send message to display server, instead
         print it to stdout
   -v    Verbose mode.  The more v's, the more vebose logging.

  Mutually exclusive arguments:
   Note: all of these arguments cause Devmon to exit after
         performing the action listed in the argument, without
         sending any data to your display server.

   --readbbhosts   Read in data from the BigBrother/Hobbit hosts file,
                   write it to the hosts database.
   --syncconfig    Update multinode DB with the global config options
                   configured on this local node.
   --synctemplates Update multinode device templates with the template
                   data on this local node.
   --resetowners   Reset multinode device ownership data.  This will
                   cause all nodes to recalculate ownership data.

</snip>
=20
Let me know if this clears or muddies the water for you.
-Eric

________________________________

From: dev...@li... on behalf of Dan Vande =
More
Sent: Thu 3/2/2006 9:29 AM
To: dev...@li...
Subject: Re: [Devmon] problem getting devmon to work

Yes, I think you should explain the purpose of the hosts.db file, and
mention that devmon --readbbhosts's only purpose is to keep this file
up to date. That way, not only will us sysadmins not only have a
better understanding of the fundamentals, there will also be a place
the the docs explaining what bbreadhosts does.

Thanks

Dan

On 3/2/06, Schwimmer, Eric E *HS <EE...@hs...> wrote:
>
> The documentation could be at fault.  I don't think I really mention
> anywhere that the --readbbhosts flag causes Devmon to exit after
> reading in the bb-hosts file.  Comments?
>
> -Eric
>
> > -----Original Message-----
> > From: dev...@li...
> > [mailto:dev...@li...] On Behalf
> > Of Dan Vande More
> > Sent: Wednesday, March 01, 2006 9:37 PM
> > To: dev...@li...
> > Subject: Re: [Devmon] problem getting devmon to work
> >
> > Holy cow, that was the problem. I can't believe I misinterpreted =
that.
> > Everything seems to be working now, thanks.
> >
> > -Dan
> >
> > On 3/1/06, Schwimmer, Eric E *HS
> > <EE...@hs...> wrote:
> > >
> > > Hi Dan,
> > >
> > > I *think* the problem that you are having is that you are
> > > running devmon with the --readbbhosts flag;  this flag tells
> > > devmon to read the bbhosts file into the database and then quit,
> > > which I what I think is happening here.
> > >
> > > Try running it like this:
> > > ./devmon -vv -p
> > > (the -p flag implies -f as welli, I should probably document that =
:)
> > >
> > > If you've previously run devmon with the --readbbhosts flag, and
> > > devmon has created the hosts.db file in the devmon
> > directory, then it
> > > should read in from that file, poll your hosts, do the
> > logic, and spit
> > > out your message.
> > >
> > > The design reasoning behind the --readbbhosts flag, and why I =
didnt
> > > just make devmon read the bbhosts file every poll cycle, is =
twofold
> > > (you can probably skip reading this, I just like typing):
> > >
> > > 1) The fact that running a multi-node cluster, you probably
> >  dont want
> > > to run the devmon process on your display machine, but want
> > to farm it
> > > out to dedicated devmon polling servers.  The readbbhosts flag =
makes
> > > it so that you can import your bb-hosts file into the
> > cluster database,
> > > without having to actually run devmon on the display machine.
> > >
> > > 2) Reading the bb-hosts file and querying the hosts takes a
> > little while,
> > > since devmon queries every host in the bb-hosts file, every
> > time (making
> > > no assumptions as to whether hosts that were there during the last
> > > auto-discovery are the same hosts that are there on this
> > one;  people
> > > have been known to swap out devices with different
> > vendor/models and not
> > > change the bb-hosts ip or hostname).  So I didnt want this
> > auto-discovery
> > > phase to interfere with polling times.
> > >
> > > -Eric
> > >
> > > -----Original Message-----
> > > From: dev...@li... on behalf
> > of Dan Vande More
> > > Sent: Wed 3/1/2006 4:18 PM
> > > To: dev...@li...
> > > Subject: [Devmon] problem getting devmon to work
> > >
> > > My devmon is close, but still not working. Here's what I've done:
> > >
> > > Made a new template for a cisco 7609, just changed the
> > spec, is about
> > > all - it's just like a 6509.
> > >
> > > Put devmon next to the appropriate line in bb-hosts, like this:
> > >
> > > <ip>     gsr-east.domain # ssh !telnet DEVMON
> > >
> > > Configured my devmon.cfg:
> > >
> > > MULTINODE=3DNO
> > > BBHOSTS=3D/home/monitor/server/etc/bb-hosts
> > > BBTAG=3DDEVMON
> > > SNMPCIDS=3Dmycid,public,private
> > > NODENAME=3DHOSTNAME
> > > PIDFILE=3D/var/run/devmon/devmon.pid
> > > LOGFILE=3D/var/log/hobbit/devmon.log
> > > DBHOST=3Dlocalhost
> > > DBNAME=3Ddevmon
> > > DBUSER=3Ddevmon
> > > DBPASS=3Ddevmon
> > > BBTYPE=3Dhobbit
> > > DISPSERV=3Dlocalhost
> > > DISPPORT=3D1984
> > > MSGSIZE=3D8096
> > > MSGSLEEP=3D10
> > > CYCLETIME=3D60
> > > DEADTIME=3D180
> > > CLEARTIME=3D180
> > > NUMFORKS=3D10
> > > MAXPOLLTIME=3D30
> > > SNMPTIMEOUT=3D2
> > > SNMPTRIES=3D5
> > >
> > > And run this:
> > >
> > > $ sudo -u monitor ./devmon -vvvvv -p -f --readbbhosts
> > > [06-03-01@15:15:32] SNMP querying all hosts in bb-hosts
> > file, please wait...
> > > [06-03-01@15:15:32] Querying pre-existing hosts
> > > [06-03-01@15:15:32] Discovered gsr-east.domain as a cisco 7609
> > >
> > > And that's all I get. I thought I'd be getting the same
> > messages it's
> > > sending hobbit, but i'm not seeing them.
> > >
> > > What am I doing wrong?
> > >
> > > Thanks
> > >
> > > Dan
> > >
> > >
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> >
> >
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>
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and join the prime developer group breaking into this new coding =
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RE: [Devmon] problem getting devmon to work

SNMP poller for Xymon

RE: [Devmon] problem getting devmon to work