[Bug 1907893] Re: package openssh-server 1:8.3p1-1 failed to install/upgrade: installed openssh-server package post-installation script subprocess returned error exit status 1

[Christian Ehrhardt ]

Hi Marcus,
from your log:
  error: Bind to port 22 on :: failed: Address already in use.
  fatal: Cannot bind any address

This indicates that some local configuration causes another service to run and bind port 22 which blocks sshd from (re-)starting.
Sshd itself (the one of the package) would not block itself as it is restarted, but anything else on that port will.

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Title:
  package openssh-server 1:8.3p1-1 failed to install/upgrade: installed
  openssh-server package post-installation script subprocess returned
  error exit status 1

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  .

  ProblemType: Package
  DistroRelease: Ubuntu 20.10
  Package: openssh-server 1:8.3p1-1
  ProcVersionSignature: Ubuntu 5.8.0-33.36-generic 5.8.17
  Uname: Linux 5.8.0-33-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Fri Dec 11 23:16:05 2020
  ErrorMessage: installed openssh-server package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2020-12-12 (0 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
  PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
  RelatedPackageVersions:
   dpkg 1.20.5ubuntu2
   apt  2.1.10ubuntu0.1
  SSHDConfig: Error: command ['/usr/sbin/sshd', '-T'] failed with exit code 255: Missing privilege separation directory: /run/sshd
  SourcePackage: openssh
  Title: package openssh-server 1:8.3p1-1 failed to install/upgrade: installed openssh-server package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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