On Thu, 1 Mar 2018 08:16:49 +0100 soren@fab-it.dk wrote:
"No data was found for the given timeframe. This may indicate a problem with the data collection and/or presentation. Try choosing a longer timeframe to see when the problem started."
But I do get graphs if I choose the "CPU highest average" - so SNMP apparently is working fine.
When I access Graphite directly on port 8000 and traverse the tree Metrics-> nav-> devices-> ip-> port-> ifinOctets I am able to see a graph for that interface.
But are you able to browse the graphs for individual interfaces using NAV? How about the system/cpu graphs for individual devices?
From what you're saying, it sounds like your problem is only with the
ranked statistics tool itself, not with data collection.
I'm curious as to whether this is the message displayed by Ranked statistics if the Graphite request times out before producing a response (I'm not sure).
Ranked statistics offloads all its work to graphite-web, but while graphite has an excellent query language for producing this kind of ranked data and/or graphs, it is sadly not very performant. If you have 10.000 interfaces, it needs to chew through the data of 10.000 whisper files, and since there is no indexing, it's going to take a long time. Sometimes, so much that something will eventually time out while waiting for a response from the graphite-web backend.