Ok, I think I ran into the same bug upgrading yesterday from 10.10 to 15.04.
I was able continue by doing three steps:
1. Adding the mysql Repos(may not be necessary) https://dev.mysql.com/downloads/repo/
2. Tried doing apt-get install mysql-server and got this error: "Setting up mysql-community-server (5.6.26-1ubuntu15.04) ... mysqld: Can't read dir of '/etc/mysql/mysql.conf.d/' (Errcode: 13 - Permission denied)"
3. Removed apparmor apt-get remove apparmor apparmor-utils
4. Did apt-get install mysql-server -> This time it worked!
Ok, I think I ran into the same bug upgrading yesterday from 10.10 to 15.04.
I was able continue by doing three steps:
1. Adding the mysql Repos(may not be necessary) /dev.mysql. com/downloads/ repo/
https:/
2. Tried doing apt-get install mysql-server and got this error: -server (5.6.26- 1ubuntu15. 04) ... mysql.conf. d/' (Errcode: 13 - Permission denied)"
"Setting up mysql-community
mysqld: Can't read dir of '/etc/mysql/
3. Removed apparmor
apt-get remove apparmor apparmor-utils
4. Did apt-get install mysql-server -> This time it worked!