I’m new to CasaOS and NextCloud. I followed the video’s instructions a little too close. How would I go about change the username and password for MariaDB?
I am a rookie too… and this might wipe your data. Try: clicking the 3 dots in the upper right corner of the Nextcloud icon on your CasaOS dashboard and select settings. In the new window mine has a tab for the db setup. Click the tab, scroll down to see the default password, edit and save. I think this rebuilds your install?