[mrtg] Re: How to monitor device availability with MRTG

Alex van den Bogaerdt alex at ergens.op.het.net
Thu Feb 13 13:05:52 MET 2003

On Thu, Feb 13, 2003 at 01:21:10PM +0200, Naveen Sivenandan wrote:

> I need to enquire how to setup MRTG to monitor device availability. All I
> want to do is plot from 0-100%. 

That it the easy part.  Once you get a reliable number, MRTG will
happily process it for you.  Just use GAUGE and make the number
available to MRTG (for instance through the external program interface).

What is availability?  Do you consider a device to have been up for
five minutes if you can ping it "now" ?  Is your mailserver up just
because you can ping it?  Is your proxyserver down just because you
cannot connect to a part of the Internet?

Much of what looks like rudeness in hacker circles is not intended to give
offence. Rather, it's the product of the direct, cut-through-the-bullshit
communications style that is natural to people who are more concerned about
solving problems than making others feel warm and fuzzy.


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