since I upgraded to ubuntu 16, it crashes on the end because of mysql everytime it updates packages

[Victor Magalhães]

a

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-server-5.7 5.7.12-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Sun Jun 5 18:55:27 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2015-01-07 (515 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
Logs.var.log.daemon.log:

Logs.var.log.mysql.error.log:
MySQLConf.etc.mysql.my.cnf: Error: [Errno 2] Arquivo ou diretório não encontrado: '/etc/mysql/my.cnf'
MySQLConf.etc.mysql.mysql.cnf: Error: [Errno 2] Arquivo ou diretório não encontrado: '/etc/mysql/mysql.cnf'
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed root=UUID=76f6a200-16d3-4388-97b1-67e7a2d7c321 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.12-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: Upgraded to xenial on 2016-05-26 (10 days ago)
modified.conffile..etc.mysql.debian-start: [deleted]
modified.conffile..etc.mysql.mysql.cnf: [deleted]
modified.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: [deleted]
modified.conffile..etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf: [deleted]

[Robie Basak (racb)]

From log:

update-alternatives: error: alternative path /etc/mysql/mysql.cnf doesn't exist