2 Nagios boxes running together in different locations

[FTL Nagios]

Thankyou I will look into this,

-----Original Message-----
From: C. Bensend [mailto:benny at bennyvision.com] 
Sent: 09 May 2012 13:28
To: nagios-users at lists.sourceforge.net
Subject: Re: [Nagios-users] 2 Nagios boxes running together in different
locations


> Interesting  - How does it work though - I mean if the firewall plays 
> up at Site A, it thinks everything in Site B is down - so Nagios GUI 
> marks everything as down - what happens then if say a server in Site B 
> does actually go down - we will not get alerted to that?

That's correct.  But, your proposed configuration wouldn't solve this
problem - if the firewall fails, the Nagios servers can't contact each other
anyway, so they could never agree on what's up and what's down.

> I made a slight error in my original description - when the firewall 
> "goes down" it cant contact anything at both locations, not just Site 
> A, due to the fact that the protected interface stays up but just 
> denies all traffic.
>
> We are currently working on this with GTA but im losing the will to 
> live with 300 texts virtually every night!!

I've dealt with this situation before, and I've ended up implementing two
mostly standalone Nagios systems.  They each check their own site, so if
their external network goes away they are still able to monitor and alert
for the things they're responsible for (you have to use out-of-band
notifications of course).  They also each check each other's *site*, ala the
other site's firewall, so the Nagios server at site A can alert and let you
know if site B goes away, but it *doesn't* try to alert you for all of the
hosts and services at site B.


--
"The problem with quotes on the internet is that it's very hard to
verify their authenticity."       -- Abraham Lincoln



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------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
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Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null