Re: machine monitoring packages
On Fri, Feb 14, 2003 at 11:19:04AM -0500, George Georgalis wrote:
> On Fri, Feb 14, 2003 at 10:15:16AM -0500, Matt Zimmerman wrote:
> >Of course you can, as long as you set up your RRDs at the start to hold all
> >of the data that you will want. RRDs do not expand once they are created,
> >so once it wraps and starts to overwrite old data, it is lost.
>
> RRDs are designed not to grow, hence the "Round Robin" they are not
> intended to archive historical data, but you could always save a png for
> the prior month at the first day of the month and compare the pictures
> later...
You can also snapshot the RRDs so that you preserve all data (and easily
plot data from multiple RRDs on the same graph), but this is not a natural
fit for rrdtool.
--
- mdz
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