I'm getting rather frustrated because I'm not getting any response from Canonical about this problem.
Here is some additional stuff that I tried.
I reverted back to Ubuntu 14.04 and tried to 'just' upgrade mysql to 5.7. I got similar messages about not being able to access /etc/mysql/mysql.conf.d (permission denied). So I googled those and came across this bug reported:
This seemed like very much what I was experiencing when upgrading from mysql5.5 to mysql5.7. So I reverted back to 14.04 and ran do-release-upgrade but this time ensured that when asked whether I want to replace /etc/apparmor.d/user.sbin.mysqld I said 'Y'.
However I still ended up with the same problem.
Clearly there is something else that I haven't found or cottoned on to yet.
I'm getting rather frustrated because I'm not getting any response from Canonical about this problem.
Here is some additional stuff that I tried.
I reverted back to Ubuntu 14.04 and tried to 'just' upgrade mysql to 5.7. I got similar messages about not being able to access /etc/mysql/ mysql.conf. d (permission denied). So I googled those and came across this bug reported:
https:/ /bugs.launchpad .net/ubuntu/ +source/ mysql-5. 6/+bug/ 1455773
This seemed like very much what I was experiencing when upgrading from mysql5.5 to mysql5.7. So I reverted back to 14.04 and ran do-release-upgrade but this time ensured that when asked whether I want to replace /etc/apparmor. d/user. sbin.mysqld I said 'Y'.
However I still ended up with the same problem.
Clearly there is something else that I haven't found or cottoned on to yet.
Please I need URGENT help here.
Thanks