package mysql-server-5.7 5.7.33-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Scott]

This bug occurred while running do-release-upgrade to upgrade trusty to xenial as root on an aws ec2 instance.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: mysql-server-5.7 5.7.33-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 3.13.0-170.220-generic 3.13.11-ckt39
Uname: Linux 3.13.0-170-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.30
Architecture: amd64
Date: Tue Feb 23 18:53:05 2021
Ec2AMI: ami-064218cbdf53b7325
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: us-west-2c
Ec2InstanceType: t2.micro
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
ErrorMessage: subprocess installed post-installation script returned error exit status 1
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: ['ibdata1', 'modus', 'ib_logfile1', 'mysql_upgrade_info', 'performance_schema', 'wiki', 'ordering', 'ib_logfile0', 'debian-5.5.flag', 'mysql']
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-3.13.0-170-generic root=UUID=c70a26ec-1dda-455c-acfd-792015b2bb6f ro console=tty1 console=ttyS0
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.6
 apt 1.2.32ubuntu0.2
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.33-0ubuntu0.16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2021-02-23 (0 days ago)

[Scott (stovepipe)]

mysql-5.7 installed successfully after removing the following line from /etc/mysql/my.cnf

myisam_recover = BACKUP

[Sergio Durigan Junior (sergiodj)]

Thanks for taking the time to write a report. As you noticed, this was caused by a local configuration issue. As such, I am marking this bug as Invalid. Feel free to reopen it and provide more information if you think it is a real bug.