Howie, give me a clue, on how could I get the value from cpu usage, set the node like this:
POSITION node09486 0 40
Is there any wrong?
If you want it exactly like the picture (with the node name), then that is actually two nodes - one with the icon and label (hostname), and a second one to show the CPU. I think you have that part right, and node09846 is the one with the icon, right?
Also your TARGET needs to have either 0 or 2 DS names on the end, and at least one should not be "-". Take the :- of the end, wait for one poller cycle, and look in the logs. You will see an error message with the correct names to use. These names are defined in the Cacti data template, so I can't tell you what they should be.
Finally, you probably want %f instead of %k in the label. %k will try to make milli, mega, kilo values, which doesn't make sense for a percentage. %f (or nothing - that's the default) will just show the actual value.