System upgrade using live upgrade. Detailed bug report attached.
ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: libpam-modules 1.3.1-5ubuntu4.6
ProcVersionSignature: Ubuntu 5.4.0-1102.110+fips1-aws-fips 5.4.233
Uname: Linux 5.4.0-1102-aws-fips x86_64
ApportVersion: 2.20.11-0ubuntu27.26
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri May 26 22:06:56 2023
Ec2AMI: ami-08d4ac5b634553e16
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: us-east-1c
Ec2InstanceType: t3.large
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
ErrorMessage: new libpam-modules:amd64 package pre-installation script subprocess returned error exit status 2
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python3.8, Python 3.8.10, python-is-python3, 3.8.2-4
RelatedPackageVersions:
dpkg 1.19.7ubuntu3.2
apt 2.0.9
SourcePackage: pam
Title: package libpam-modules 1.3.1-5ubuntu4.6 failed to install/upgrade: new libpam-modules:amd64 package pre-installation script subprocess returned error exit status 2
UpgradeStatus: Upgraded to focal on 2023-05-27 (0 days ago)
mtime.conffile..etc.security.limits.conf: 2023-05-26T21:06:16.816903
The issue is precisely as described in the output of the maintainer script:
you are using pam_tally or pam_tally2 in your configuration The pam_tally and pam_tally2 modules have been removed from PAM. You are using one of these modules in your PAM configuration in /etc/pam.d. You must remove the uses of these modules before PAM can be upgraded; including these modules in your PAM configuration after the upgrade will stop users from being able to log into the system.
It is recommended to always use do-release-upgrade or update-manager to upgrade between releases. The release-upgrader presents this message before you start the upgrade, rather than it happening unavoidably partway through the upgrade leaving the package database in a state that may be difficult to recover from.