Check if you have the file /etc/apparmor.d/local/usr.sbin.mysqld
If not create the file, e.g by running
touch /etc/apparmor.d/local/usr.sbin.mysqld
with the appropriate permissions (e.g. using sudo) and see if it helps.
If it works please let us know.
@Miguel,
> Any work around to install at least an old version? We are stuck and
> can't install mysql server (or upgrade)
Please have a look at bug 986892.
Check if you have the file /etc/apparmor. d/local/ usr.sbin. mysqld
If not create the file, e.g by running d/local/ usr.sbin. mysqld
touch /etc/apparmor.
with the appropriate permissions (e.g. using sudo) and see if it helps.
If it works please let us know.
Paul