[rrd-users] can't update rrd with data.

[John Stile]

On Tue, 2009-11-24 at 03:19 +0000, A Darren Dunham wrote:
> On Mon, Nov 23, 2009 at 12:38:15PM -0800, John Stile wrote:
> > At the end of my backup script, if the rrd does not exist, it is created
> > via the following:
> > 
> >   rrdtool \
> >     create \
> >     "${RRD_File}" \
> >     --step 86400 \
> >     "DS:size:GAUGE:87000:U:U" \
> >     "RRA:LAST:0.5:1:365" \
> >     "RRA:LAST:0.5:30:60"
> 
> > After this step, I try to add the size of the backup with the following
> > command:
> >   rrdtool update "${RRD_File}" "N:${size}"
> 
> Are you only running this once?
Yes.  I run only once a day.

> 
> > The script log shows that the two variables ${RRD_File} and ${size} are
> > populated with the correct data.
> > 
> > I set the heartbeat to 87000 seconds (slightly higher than the step of
> > 86400 seconds) to allow extra time for the backup to complete.
> > 
> > After the update, when I do a dump, nothing is stored in either rra.
> 
> Although this is of type "GAUGE", RRD internally is still keeping track
> of things as rates, so you must have 2 data points (within a heartbeat
> distance) before anything can be shown.
> 
> Can you show some sample data that you're providing to rrdupdate?
> 
Oh... Bad me.  I thought I was inserting a number.... but I was
inserting a number and directory name.  Sorry.  Thank you.