Chapter 13. How To

Click Create

Should see "Save Successful.", Item #1 listed and a graph under debug (probably with nothing in it yet)

To add a legend, click Add by Graph Items again

Data Source: No Host   random2ds (random_number)

Color: None

Graph Item Type: GPRINT

Consolidation Function: LAST

CDEF Function: None

Value: blank

GPRINT Type: Normal

Text Format: Cur:

Insert Hard Return: unchecked

Click Create

Should see "Save Successful." and the graph will have a legend showing the current value. Note: your integer

random number has been averaged over the past 5 minutes. At the bottom of the page, click save.

At the bottom of the page, click Save.

Should see "Save Successful." and your graph listed.

4. Add graph to the graph view

Click Graph Trees under Management

We'll create a tree called "test" to place our graph

Click Add

Name: test

Should see "Save Successful"

Click Add beside Tree Items (to add our graph to this tree)

Under Tree Items [graph]...

Graph: RANDOM NUMBERS (we named this in step 3)

Round Robin Archive: Daily (5 Minute Average)

Click Create

Should see "Save Successful." and RANDOM NUMBERS listed under Tree Items

Click Save

Should see "Save Successful." and test listed under Graph Trees

5. View Graph

Select Graphs tab

Select tree view (Tree beside settings tab)

Select test tree on left

You may see "Random Graph" but no graph. It takes two or three polls (10   15 minutes) to see a graph. I

believe poll 1 to create the rrd, poll 2 to get the first data point and poll 3 to have graphable points.

While waiting, you can click the RANDOM NUMBERS graph. You'll see place holders for 4 graphs. Select

[source] under Daily (5 Minute Average). You'll see the source for the call to rrdtool graph. Give it a sanity

check.

Now be patient. Hit your refresh button every few minutes. After the first poll I got a few empty graphs. A

few minutes later data started showing up.

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