Mongo mongodb_flush_avg plugin failing because it does not return an integer

[josephmisiti]

After cding into my /usr/share/munin/plugins directory, I run

db1:/usr/share/munin/plugins$ python mongodb_flush_avg
total_ms.value 6837.046

You can see it is returning a float. No graph was being produced to I tailed

/var/logs/munin/munin-graph.log

and see the follow error file

2014/05/07 17:00:04 [ERROR] In RRD: Error updating /var/lib/munin/localdomain/localhost.localdomain-mongodb_flush_avg-total_ms-d.rrd: /var/lib/munin/localdomain/localhost.localdomain-mongodb_flush_avg-total_ms-d.rrd: not a simple signed integer: '6836.937'

Even though this ticket was from two years ago, I think it is causing the problem:

http://munin-monitoring.org/ticket/1193