[Observium] Collectd ping plugin graph issue

Hi,

I have collectd configured in Observium and pretty much all the plugins I tried work.

There is an issue rendering one graph generated by ping plugin though.

Say, I'm measuring latency to "netflix.com". After measurements, the plugin sends following 3 RRD files to Observium

- ping-netflix.com.rrd - ping_stddev-netflix.com.rrd - ping_droprate-netflix.com.rrd

While observium renders stddev and droprate graphs, it doesn't render "ping-netflix.com.rrd".

RRD command produces below error.

"RRDTool Output: ERROR: No DS called 'ping' in '/opt/collectd-rrd/server-f04/ping/ping-netflix.com.rrd'"

RRD dump has "value" as DS name in *ALL* 3 rrd files (as opposed to "ping"). For some reason, Observium doesn't use the correct DS name for the first file.