I have been running MariaDB 5.5 on a linux server for several years. Yesterday, I upgraded to MariaDB 10.11.3.
Now, my backup software has stopped backing up the databases, reporting an error that "MySQL 10.11 is not supported".
Since the backup software supports MySQL, it is likely expecting to receive version 5.7 from the server, and is being confused by receiving version 10.11.3.
Is there any way to make MariaDB report version 5.7, to make the backup software think we're running MySQL 5.7? Since MariaDB 10.11 and MySQL 5.7 are basically compatible (if using the same storage engines) it shouldn't present a problem to back up, but reporting 5.7 will persuade the backup software to continue running.