Can't see database in MongoDB after update?

Question

MongoDB

Updated MongoDB from version 2.0.6 to 3.2.0. After launch, only the empty local database is visible. The main database is not visible, but its files are also located in /var/lib/mongodb. How to connect them?

Answer 1

With a big update, you need to do a dump -> restore
You can run mongo2 through docker and do a dump there, and then restore to your mongo3.2

Answer 2

no way. for this there is documentation, you first had to upgrade to 2.4-2.6-3.x
https://docs.mongodb.org/v3.0/release-notes/3.0-up...