Upgrade Percona for MongoDB v3.6.8 to v5.0.8-7

MongoDB Percona Server for MongoDB
1

We are trying to upgrade from Percona Server for MongoDB 36 v3.6.8 to Percona Server for MongoDB v5.0.8-7.

Is there any documentation for the doing this upgrade? Will I need to do incremental upgrades to perform this upgrade?

Can I make backups of the databases and remove the old MongaDB and install the v50 server and import the databases?

Thank you.

2

Hello @srcrtx ,

Generally speaking it is necessary to do incremental upgrades between major versions: 3.6 → 4.0 → 4.2 → 4.4 ->5.0. Skipping some major versions (like upgrading 3.6 → 5.0) is not supported.
On each step you need to do backup to be able to revert to working setup in case of failure.
Percona has these documents on upgrade process:
Upgrading from Percona Server for MongoDB 3.6 to 4.0
Upgrade from 4.0 to 4.2
Upgrade from 4.2 to 4.4
Upgrade from 4.4 to 5.0

3

As already suggested, the incremental upgrade procedure is the one strongly recommended.

Just to add some more info: it is possible to use mongoexport and mongoimport to perfom the upgrade skipping major versions, but it’s not recommended.
The solution is similar to mongodump / mongorestore but instead of using binary files (BSON), you are using plain text JSON files.
It’s lot slower than mongodump / mongorestore and you are not saving the metadata so you will have to recreate the indexes manually. Mongodump/mongorestore is faster and it’s supposed to work only from a major versione to the next one.

So, in the end, use the incremental upgrades.