<div dir="ltr"><div class="gmail_extra">Simon;</div><div class="gmail_extra"><br>Thanks for pointing this out!</div><div class="gmail_extra"><br></div><div class="gmail_extra">I intend to process a data file each day but create the rrd database on the FIRST day of the month.</div>
<div class="gmail_extra"><br></div><div class="gmail_extra">The creation shall ensure sufficient data points in the first day to contain the entire month but plot daily graphs until the end of the month, whereby it will plot the entire month.</div>
<div class="gmail_extra"><br>Say for example,</div><div class="gmail_extra"><br></div><div class="gmail_extra">If i had a step interval of 15 minutes (900 seconds), </div><div class="gmail_extra"><br></div><div class="gmail_extra">
<font face="courier new, monospace">rrdtool create $RRDB --step 900 --start $STARTIME \</font></div><div class="gmail_extra"><font face="courier new, monospace">DS:......</font></div><div class="gmail_extra"><font face="courier new, monospace">DS:......</font></div>
<div class="gmail_extra"><div class="gmail_extra"><font face="courier new, monospace">.</font></div><div class="gmail_extra"><font face="courier new, monospace">.</font></div><div class="gmail_extra"><font face="courier new, monospace">.</font></div>
<div class="gmail_extra"><font face="courier new, monospace">DS:......</font></div><div class="gmail_extra"><font face="courier new, monospace">DS:......</font></div><div class="gmail_extra"><font face="courier new, monospace">RRA:AVERAGE:0.5:1:2880</font></div>
</div><div class="gmail_extra"><br></div><div class="gmail_extra">2880 = 24 hours x 4 data points per hour x 30 (thirty days in a month)</div><div class="gmail_extra"><br></div><div class="gmail_extra">4 data points since one hour has 4 data points (15 minutes step).</div>
<div class="gmail_extra"><br></div><div class="gmail_extra">Would the above be correct?</div><div class="gmail_extra"><br>Deepest Regards<br>Steven Sim</div><div class="gmail_extra"><br><br><br><div class="gmail_quote">On Tue, Jul 1, 2014 at 3:11 PM, Simon Hobson <span dir="ltr"><<a href="mailto:linux@thehobsons.co.uk" target="_blank">linux@thehobsons.co.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Steven Sim <<a href="mailto:unixandme@outlook.com">unixandme@outlook.com</a>> wrote:<br>
<br>
> I'm being asked to write a scrip to append data to an rrd and plot daily, weekly and monthly graphs of said data.<br>
><br>
> I already have a script to create an rrd and write data to it.<br>
><br>
> To append, I'll simply bypass the 'creation' logic of my script and use a user specified rrd file.<br>
<br>
It may be just the way you write, but the wording makes me wonder if you properly understand how RRD works. Because in RRD, there is no such function as appending data - only updating. You specify the number of consolidated data points to keep at the point of creation, after that the size never changes and you only update values.<br>
<br>
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