[munin-users] returned no data for label

[Jeff S. <je...@sw...>]

I have a plugin that appears to be working, but I am getting error messages
in /var/log/munin/munin-update.log that say

2014/10/20 11:05:24 [WARNING] Service cpu_byproc on
wh2-pokki-op.sea.opencandy.com/ssh://mun...@wh.../usr/share/munin/munin-async
--spoolfetch --spooldir=/var/lib/munin/spool:4949 returned no data for
label cpu16

2014/10/20 11:05:24 [WARNING] Service cpu_byproc on
wh2-pokki-op.sea.opencandy.com/ssh://mun...@wh.../usr/share/munin/munin-async
--spoolfetch --spooldir=/var/lib/munin/spool:4949 returned no data for
label cpu20
2014/10/20 11:05:24 [WARNING] Service cpu_byproc on
wh2-pokki-op.sea.opencandy.com/ssh://mun...@wh.../usr/share/munin/munin-async
--spoolfetch --spooldir=/var/lib/munin/spool:4949 returned no data for
label cpu28

​Insofar as I can tell, my plugin is working correctly.

munin-run cpu_byproc config
update_rate 60
graph_title CPU time time by proc
graph_args --upper-limit 100 -l 0
graph_vlabel %
graph_scale no
graph_category system
cpu0_user.label cpu0_user
cpu0_user.type DERIVE
cpu0_user.min 0
cpu0_user.graph no
cpu0_nice.label cpu0_nice
cpu0_nice.type DERIVE
cpu0_nice.min 0
cpu0_nice.graph no
cpu0_system.label cpu0_system
cpu0_system.type DERIVE
cpu0_system.min 0
cpu0_system.graph no
cpu0_idle.label cpu0_idle
cpu0_idle.type DERIVE
cpu0_idle.min 0
cpu0_idle.graph no
cpu0_iowait.label cpu0_iowait
cpu0_iowait.type DERIVE
cpu0_iowait.min 0
cpu0_iowait.graph no
cpu0_irq.label cpu0_irq
cpu0_irq.type DERIVE
cpu0_irq.min 0
cpu0_irq.graph no
cpu0_softirq.label cpu0_softirq
cpu0_softirq.type DERIVE
cpu0_softirq.min 0
cpu0_softirq.graph no
...

munin-run cpu_byproc
cpu0_user.value 449998543
cpu0_nice.value 30538753
cpu0_system.value 91270743
cpu0_idle.value 1987975679
cpu0_iowait.value 89481698
cpu0_irq.value 5404
cpu0_softirq.value 8602263
...

I can telnet into the agent and fetch the data:

ro...@wh...a:~# telnet localhost 4949
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
# munin node at wh2-pokki-op.sea.opencandy.com
fetch cpu_byproc
cpu0_user.value 263382962
cpu0_nice.value 32952
cpu0_system.value 22884915
cpu0_idle.value 4354961284
cpu0_iowait.value 109989141
cpu0_irq.value 5901
cpu0_softirq.value 3852914
...

However, despite the error message, I am getting plots of data.  There
is data in the .rrd files, I can see it updating.  Is the warning a
spurious error that may be ignored, or is it trying to tell me
something?

I see from search the internet that other people have encountered this
problem, but no explanation of what it means or anything that is
useful for me to troubleshoot.



Thank you


Jeff Silverman





​


-- 
*Jeff Silverman*
Systems Engineer
(253) 459-2318 (c)