Here's a simple test plug-in. It just builds a stack from 3 constant
values. With the attached version, you'll get errors in /var/log/munin
/munin-graph.log:
[...] ERROR: First field ("f2") of graph [...] "b483897" is STACK. STACK can
only be drawn after a LINEx or AREA.
[...] ERROR: First field ("f3") of graph [...] "b483897" is STACK. STACK can
only be drawn after a LINEx or AREA.
If you remove the 3 colour lines from the script (i.e., if you let munin choose
the colors itself) the errors go away.
As said in the original report, the logic behind the STACK–LINEx/AREA test is
broken if fields have custom colors.
** Attachment added: "b483897"
http://launchpadlibrarian.net/35978243/b483897
--
Wrong STACK check with custom colors
https://bugs.launchpad.net/bugs/483897
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