Apologies, I misread your message when you said "mysql-common". When I try to install that one, I get the error:
update-alternatives: error: alternative path /etc/mysql/my.cnf.fallback doesn't exist
I noticed there is already a bug open for that.
However: This current bug is valid. My first message in this bug shows that I was unable to upgrade from mysql 5.6 on Xenial. The configuration halted because:
[ERROR] unknown variable 'key_buffer=16M'
And the whole installation exited with the same message as the bug title.
Apologies, I misread your message when you said "mysql-common". When I try to install that one, I get the error:
update- alternatives: error: alternative path /etc/mysql/ my.cnf. fallback doesn't exist
I noticed there is already a bug open for that.
However: This current bug is valid. My first message in this bug shows that I was unable to upgrade from mysql 5.6 on Xenial. The configuration halted because:
[ERROR] unknown variable 'key_buffer=16M'
And the whole installation exited with the same message as the bug title.