I broke my instance. MySQL did not start anymore and I tried to apt-get remove/install it, which obviously was a bad idea. I’m trying to restore a backup.
yunohost backup restore 20190209-231002
Info: Installing YunoHost…
Info: The operation 'Postinstall your YunoHost server' has failed! To get help, please share the full log of this operation using the command 'yunohost log display 20190211-223529-tools_postinstall-xxx.nohost.me --share'
Error: Invalid password
Since Yunohost is not restored, the log display command does not work.
I supposed it might be the MySQL password. I reset it to default password but I’m still having the same error message.
I think this actually refers to the admin password and is a bug that was fixed in 3.4 …
But I doubt that restoring a backup will really fix your issue with mysql ? (YunoHost backup are not designed for this, they only store data and configuration of apps, conf, user data and other things but not system files)