https://github.com/mcdarren/rrdtool-merge
Looks like it might do the trick.
adam. On 2019-02-21 20:10:24, Michael via observium observium@observium.org wrote: There is a number of ways to join the stats from two rrds together into a single new rrd.
Search for "rrdtool merge".
I've done this a number of times during different device migrations/upgrades in order to preserve long term trend data. But i can't recall the exact commands of the top of my head and I'm AFK.
Hope this helps,
Michael
On February 22, 2019 6:28:17 AM GMT+11:00, Adam Armstrong via observium wrote:
Port statistics are just held in a .rrd file on the server. You can copy one file over another file. This is usually not a good thing to do, because you're copying statistics for errors and other things too, but if it's legitimately the same interface, this isn't a problem.
You can see what the files are by clicking on a graph and seeing what RRDs are used (or showing the RRD command for graphs where the RRDs aren't shown in the UI)
adam. On 2019-02-21 15:07:58, Adam Thompson via observium wrote: I made a change on one of our routers that caused a new ifIndex & name to be assigned to a customer circuit (interface). Observium is correctly reporting the data on the old virtual i/f (which still technically exists) and – naturally – separately on the new virtual i/f. Is there any way to (retroactively???) tell Observium that these are really the same interface, and to display only one graph for the two ifIndexes?
Or, if I correct the situation so the old ifIndex & name is being showing traffic again, is there any way to move, or inject, the collected data on the ‘new’ port into the ‘old’ port’s RRDs? (i.e. avoid a multi-day gap in a multi-year dataset)
We are reasonably up-to-date, running 19.2.9712 – not sure what other info will be helpful here.
Thanks, -Adam
Adam Thompson Consultant, Infrastructure Services [merlin-email-logo] 100 - 135 Innovation Drive Winnipeg, MB, R3T 6A8 (204) 977-6824 or 1-800-430-6404 (MB only) athompson@merlin.mb.ca [mailto:athompson@merlin.mb.ca] www.merlin.mb.ca [http://www.merlin.mb.ca/]
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