Move from postgres to mariadb

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1

Hello,

at the moment I have a nextcloud running on truenas scale. There is the database a postgres db. Now I will move to Synology, there is the database a mariadb.
Is it possible to change the postgres to a mariadb?

2

Yes this is possible there are various possibilities

sql - Importing records from PostgreSQL to MySQL - Stack Overflow

https://www.sqlpipe.com/

https://dev.mysql.com/blog-archive/how-to-migrate-postgresql-databases-to-mysql-using-the-mysql-workbench-migration-wizard/ dated 2012

Migrating to MariaDB from PostgreSQL - MariaDB Knowledge Base

How to restore Postgresql dump file in MariaDB database - Stack Overflow

after reading a few of these post it not a easy task though not too hard with adequate knowledge. There is not a oneliner that will help you here.

Best of luck in your endeavor

3

Hi @daschmidt94. While @Vincent_Stans has the right idea in general for database conversions, fortunately Nextcloud already has a built in tool for handling this. It’s an occ command: occ db:convert-type.

https://docs.nextcloud.com/server/latest/admin_manual/configuration_database/db_conversion.html

https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/occ_command.html#database-conversion

Despite what’s implied in the docs, it’s used routinely for MySQL/MariaDV->PostgreSQL (and the other way around) conversions - not simply for migrating from SQLite.

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4

you don’t want to run postgresql as a container on your synology?

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5

Had postgres only running becaus truenas scale with the app from truecharts had postgres.

The most tutorials are with mariadb and the recommended db is also mariadb.

Maybe I give it a try with a postgres container