MySQL Job failed to start after adding "log = /var/log/mysql/mysql.log" to my.cnf I'm trying to add "log = /var/log/mysql/mysql.log" to my /etc/mysql/my.cnf file. But after sudo service mysql restart I have Job failed to start. 

If I delete line "log = /var/log/mysql/mysql.log" all work fine.

Set permissions like sudo chown -R mysql:mysql /var/log/mysql

What it can be?
Just change this 

log = /var/log/mysql/mysql.log

to this

general_log_file  = /var/log/mysql/mysql.log