We have a relatively large Piwik installation (>30 Gbs of DB, last time I checked), so any major upgrade which involves modifications in the database takes a very long time (for example from 2.7 to 2.8)
Stopping access to the web interface is not a big deal, but 2 or 3 hours without statistics would be. Is there any procedure to perform updates without downtime? I thought about creating a pair of master-slave databases, but anyway we would need to ‘export’ the statistics taken during the upgrade to the newer version too, I don’t know if that would even be possible.
I guess this has been asked before, but I could not find any documentation about it
Thanks a lot