Database upgrade from 2.4 to 4.2

[chris (Chris Dellaway)]

Welcome @mohit_gour

There are so many changes across the 7! major version updates I would not be comfortable with a dump/restore(even it worked) without rigorous testing.

There a couple of threads on this topic.

Upgrade advice from 2.6.11 to 4.2.6 (current)

I’ve inherited a project that is woefully behind migrating from Windows Server 2008 r2. I’m new to mongoDB, but from reading the release notes it appears as though the migration path is 2.6.11 → 3.0.15 → 3.2.22 → 3.4.24 → 3.6.18 → 4.0.18 → 4.2.6. Is this correct or is a shorter path possible? It also seems that it is just a matter of Stop the database. Upgrade the binaries Start the database Repeat 1-3 until done Anything else I should know or look out for? Thanks, Scott

Automated upgrading of MongoDB deployments

We have recently been having a lot of struggle finding a good way to automatically upgrade an existing mongo database across multiple major versions. Due to time constraints the short term emergency solution seems to be to pin the MongoDB version. But this is not a long term solution. Are there any thoughts or plans regarding MongoDB’s ability to move across multiple major versions in one update? The system we are working on is a distributed system, with alot of servers involved, so manually ste…