Public bug reported:
Upgrading from Ubuntu 24.04 LTS to 26.04 LTS thows this error
ProblemType: Package
DistroRelease: Ubuntu 26.04
Package: mysql-server 8.4.10-0ubuntu0.26.04.1
ProcVersionSignature: Ubuntu 6.8.0-136.136-generic 6.8.12
Uname: Linux 6.8.0-136-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Tue Jul 21 10:12:58 2026
ErrorMessage: old mysql-server package postinst maintainer script subprocess
failed with exit status 1
InstallationDate: Installed on 2017-07-04 (3304 days ago)
InstallationMedia: Ubuntu-Server 17.04 "Zesty Zapus" - Release amd64 (20170412)
Logs.var.log.daemon.log:
MySQLConf.etc.mysql.conf.d.mysql.cnf: [mysql]
MySQLConf.etc.mysql.conf.d.mysqldump.cnf:
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
MySQLConf.etc.mysql.my.cnf: my.cnf links to /etc/mysql/mysql.cnf
MySQLConf.etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf:
[mysqld_safe]
syslog
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-6.8.0-136-generic
root=UUID=db665932-42bc-4282-847b-e0c19ea91cdb ro
Python3Details: /usr/bin/python3.14, Python 3.14.4, python3-minimal,
3.14.3-0ubuntu2
PythonDetails: /usr/bin/python3.14, Python 3.14.4, python-is-python3,
3.13.3-1+build1
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions:
dpkg 1.23.7ubuntu1
apt 3.2.0
SourcePackage: mysql-8.4
Title: package mysql-server 8.4.10-0ubuntu0.26.04.1 failed to install/upgrade:
old mysql-server package postinst maintainer script subprocess failed with exit
status 1
UpgradeStatus: Upgraded to resolute on 2026-07-21 (0 days ago)
modified.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: [modified]
mtime.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: 2020-12-05T20:22:59.061710
** Affects: mysql-8.4 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package need-duplicate-check resolute
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https://bugs.launchpad.net/bugs/2161404
Title:
package mysql-server 8.4.10-0ubuntu0.26.04.1 failed to
install/upgrade: old mysql-server package postinst maintainer script
subprocess failed with exit status 1
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