One trick is to create a port group of the old port and the new port and graph the traffic of the port group. This way you will generate one graph with both the new and old data combined.
Den ons 10 feb. 2021 10:38Klimek, Denis via observium < observium@observium.org> skrev:
Hi Arne,
we are using the Billing Module to store important data of transit uplinks. Maybe this fits your requirements too?
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*Von:* observium observium-bounces@observium.org *Im Auftrag von *Arne Van Theemsche via observium *Gesendet:* Mittwoch, 10. Februar 2021 09:39 *An:* observium@observium.org *Cc:* Arne Van Theemsche arnevt@gmail.com *Betreff:* [Observium] best practices regarding interface switching and historical data
Hi,
I was wondering how you guys tackle the problem of changing the port of (e.g. your transit uplink) to another physical port & historical data. Since rrd's are stored under "port-<snmpid>" format, this event causes you by default to loose your historical data. Or even worse, you have to change your routing engine with a more recent version, and after replacing it seems all your snmp id's are changed.
this is certainly of importance for our interfaces which have a label that automatically creates aggregates graphs.
How I do this until now is copying the rrd file to the new location, but this seems so... dirty
kind regards
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