RE: {bb} Monitoring 800+ hosts with BB

[Henrik Olsen <henrik@iaeste.dk>]

On Tue, 29 Aug 2000, David Raistrick wrote:
> Ok.  Here i have a question.  From whta I have seen so far, in order for
> the BBDISPLAY machine to actually display the results in the html, it must
> ALSO have listings in the bb-hosts file for each host...
Yes.

> Which makes things a PITA for me, since I monitor private addresses on
> multiple networks (each bbnet machine has access to the private network it
> is monitoring, of course..but the main bbdisplay machine does not have
> access to all of them...)
> 
> I'm probably missing something, since I havnet had a tremendous amount of
> time to look at it (and so far I'm only monitoring public addresses ont he
> other lans...but that will be changing very very soon...)..But.  what AM I
> missing?
You're not missing anything, this is simply one of few the situations
where you have to deliberately break the "same bb-hosts for all machines"
rule.

For each private net, you have to make a bb-hosts file containing all
hosts to be tested by the local BBNET machine, plus the BBDISPLAY and
BBPAGER servers.

If it's not the net the latter is on, don't list any tests, and put noconn
in as well.  This is to make sure you don't duplicate tests of them.

On the BBDISPLAY machines, you have the special problem that it may also
be BBNET machine for the local net, but it can be handled still.
List all hosts, including those of other nets, but for those that should
not be tested by this machine, add noconn and don't list any tests.


This works because it's the actual results received by the bbdisplay that
determine the columns shown, so what's been sent from the other nets is
what's shown.


It also works as a reminder of why the rule of thumb is to have the same
bb-hosts file, since it can be confusing until you get a good graps of how
information flows and is used in BB.

> And, theoreticly, there is a way to push the bbnet information to multiple
> bbdisplay's, yet? (ie: if the lan with the main bbdisplay dies, i could
> have another bbdisplay on another lan that is a duplicate...yes?)
Multiple bbdisplays are simple and no theory, put all bbdisplay machines
in bb-hosts as BBDISPLAY and the messages will be sent to all of them.

-- 
Henrik Olsen,  Dawn Solutions I/S       URL=http://www.iaeste.dk/~henrik/
  Eight years involved with the nuclear industry have taught me that
  when nothing can possible go wrong and every avenue has been covered,
  then is the time to buy a house on the next continent.
                                   Terry Pratchett on alt.fan.pratchett


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