MongoDB is getting popular these years and considered as a reliable database
widely used.

So I suggest to submit mongodb package to openSUSE Factory/Tumbleweed.

https://build.opensuse.org/request/show/485713

Like other database, MongoDB requires a subvolume in /var/lib/mongodb. This
means we need to make changes in the installer.

Currently, we have the latest stable version of MongoDB in server:database
repository. Newer version MongoDB only supports x64 systems, so i586 build will
fail. Configuration file in /etc/mongodb.conf is okay but more available
configuration options should be added in future package updates.