[rrd-users] Help in RRD XPORT

[Utpal Bora]

Thank you very much Steve.

rrdtool xport
          DEF:out=if1-inouts.rrd:outoctets:AVERAGE
        *  CDEF:customvar=out,POP,123*
          XPORT:out:"out bytes"
          XPORT:*customvar*:"Temp" >> /home/temp/abc.xml


I tried as you suggested. However, I am getting the error "ERROR: invalid
rpn expression in: d1,POP,123" .
Then I tried using TIME function, which worked fine. Is it that we can use
POP function only for time variables?

My requirement is to return the PATH of the database as a STRING in the
xml. Is it possible to do so? Or the stack can handle only Time variables
or numbers?

rrdtool xport
          DEF:out=if1-inouts.rrd:outoctets:AVERAGE
        *  CDEF:customvar=out,POP,"/path/to/if1-inouts.rrd"*
          XPORT:out:"out bytes"
          XPORT:*customvar*:"Temp" >> /home/temp/abc.xml

Thanks again.


On Fri, Mar 27, 2015 at 3:48 AM, Steve Shipway <s.shipway at auckland.ac.nz>
wrote:

>  Set up an additional CDEF.
>
> rrdtool xport
>           DEF:out=if1-inouts.rrd:outoctets:AVERAGE
>         *CDEF:customvar=out,POP,12345*
>           XPORT:out:"out bytes"
>           XPORT:*customvar*:"Temp" >> /home/temp/abc.xml
>
> Now you'll get a column with '12345' in it next to the outoctets column.
>
> Note that you need the 'out,POP' to make customvar a time series, although
> you throw away the original 'out' value.  You can't just use
> 'CDEF:customvar=12345'.
>
> Steve
>
>  *Steve Shipway*
> University of Auckland ITS
> *UNIX Systems Design Lead*
> s.shipway at auckland.ac.nz
> Ph: +64 9 373 7599 ext 86487
>
>   ------------------------------
> *From:* rrd-users [rrd-users-bounces+s.shipway=
> auckland.ac.nz at lists.oetiker.ch] on behalf of Utpal Bora [
> cs14mtech11017 at iith.ac.in]
> *Sent:* Friday, 27 March 2015 3:57 a.m.
> *To:* rrd-users at lists.oetiker.ch
> *Subject:* [rrd-users] Help in RRD XPORT
>
>     Hello Everyone,
>
>  I am working on a Network Visualization project using RRDTool for my
> graduate course on Network Engineering.
>
>  I want to use the export feature of RRDtool to create an XML where I want
> to add some hard coded values(DS not in RRD) to the xml.
>  However, I could not find a solution as of yet.
>  Please assist me on this.
>
>  What I am trying to do -
>
> rrdtool xport \
>           DEF:out=if1-inouts.rrd:outoctets:AVERAGE \
>           XPORT:out:"out bytes" >> /home/temp/abc.xml
>           XPORT:"SOME_CUSTOM_VALUE":"Temp" >> /home/temp/abc.xml
>
> Here I want to append SOME_CUSTOM_VALUE to the output xml, which I am not able to do as SOME_CUSTOM_VALUE is not present in the database.
>
>
>
>
>
>
> --
>   Regards,
>
>  Utpal Bora
>  M. Tech 1st year
>  Computer Science & Engineering
>  IIT Hyderabad
>



-- 
Regards,

Utpal Bora
M. Tech 1st year
Computer Science & Engineering
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