Public bug reported: normal update by ubuntu, perhaps bug due to existing 5.5 version and data which produce following when fired up as root:
Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) ProblemType: Package DistroRelease: Ubuntu 16.04 Package: mysql-server-5.7 5.7.15-0ubuntu0.16.04.1 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic i686 NonfreeKernelModules: nvidia ApportVersion: 2.20.1-0ubuntu2.1 Architecture: i386 Date: Fri Sep 16 17:31:26 2016 ErrorMessage: subprocess installed post-installation script returned error exit status 1 InstallationDate: Installed on 2014-10-20 (697 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) Logs.var.log.daemon.log: MySQLConf.etc.mysql.conf.d.mysql.cnf: [mysql] MySQLConf.etc.mysql.conf.d.mysqld_safe_syslog.cnf: [mysqld_safe] syslog MySQLConf.etc.mysql.conf.d.mysqldump.cnf: [mysqldump] quick quote-names max_allowed_packet = 16M MySQLConf.etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf: [mysqld_safe] syslog MySQLVarLibDirListing: ['mysql_upgrade_info', 'wingrave', 'debian-5.7.flag', 'ib_buffer_pool', 'ib_logfile0', 'auto.cnf', 'sharetrans', 'gran', 'expenses7to8', 'ib_logfile1', 'performance_schema', 'mysql', 'debian-5.5.flag', 'ibdata1'] ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic root=UUID=750ca33f-749d-484f-b9a7-05343ef44d26 ro quiet splash RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.12~ubuntu16.04.1 SourcePackage: mysql-5.7 Title: package mysql-server-5.7 5.7.15-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: mysql-5.7 (Ubuntu) Importance: Undecided Status: New ** Tags: apport-package i386 xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1624476 Title: package mysql-server-5.7 5.7.15-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1624476/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs