[rrd-users] Re: Custom CDEF for Sum is Missing

[Yurek, Matt]

Richard, you are a gentleman and a scholar.  Thanks, works perfectly.
:-)

-Matt 

-----Original Message-----
From: Richard Hellier [mailto:rlh at lsil.com] 
Sent: Tuesday, July 06, 2004 9:40 AM
To: Yurek, Matt; rrd-users at list.ee.ethz.ch
Subject: Re: [rrd-users] Custom CDEF for Sum is Missing 

Matt,
    What I do is this:


Replace each of  the symbols you are adding in the CDEF phrase (e.g.
"r1")
by:

    r1,UN,0,r1,IF

Hence the line:

CDEF:custom=r3,r2,r1,+,+

becomes:

CDEF:custom=r3,UN,0,r3,IF,r2,UN,0,r2,IF,r1,UN,0,r1,IF,+,+

Cheers,

Richard.


----- Original Message ----- 
From: "Yurek, Matt" <Matt.Yurek at webloyalty.com>
To: <rrd-users at list.ee.ethz.ch>
Sent: Tuesday, July 06, 2004 1:58 PM
Subject: [rrd-users] Custom CDEF for Sum is Missing


> I'm trying to generate a graph of hits per day across an entire server
> cluster.  Three servers handle the traffic to this one site, and the
> hits per day per server are located in 3 RRDs.
>
> When I generate the graph with the following command, if one server is
> missing data (i.e. it was down for a day for maintainance, etc), the
> entire day is left blank, even though 2 out of 3 RRDs have valid data.
>
> I've tried a bunch of things like putting IF's in the CDEF line, and
> have tried googling for it, to no avail.



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