Looking at the kernel log it would appear that apparmor is blocking access to /etc/mysql/my.cnf. However looking at the profile not sure why this is as /etc/mysql/my.cnf has read permission.
Looking at the kernel log it would appear that apparmor is blocking access to /etc/mysql/my.cnf. However looking at the profile not sure why this is as /etc/mysql/my.cnf has read permission.