Public bug reported:
After upgrading a Precise (12.04.5) host to Trusty (14.04.1) the OpenSSH
server keeps complaining about a missing host key:
/etc/ssh/ssh_host_ed25519_key
# grep -cF 'Could not load host key: /etc/ssh/ssh_host_ed25519_key'
/var/log/auth.log
203
It seems the OpenSSH package doesn't run "ssh-keygen -A" in postinst.
Workaround: run ssh-keygen -A as root:
# ssh-keygen -A
ssh-keygen: generating new host keys: RSA1 ED25519
More information on the upgraded machine:
# lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04
# apt-cache policy openssh-server
openssh-server:
Installed: 1:6.6p1-2ubuntu2
Candidate: 1:6.6p1-2ubuntu2
Version table:
*** 1:6.6p1-2ubuntu2 0
500 http://archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
100 /var/lib/dpkg/status
1:6.6p1-2ubuntu1 0
500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: openssh-server 1:6.6p1-2ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: amd64
Date: Wed Sep 17 09:35:34 2014
InstallationDate: Installed on 2013-01-04 (620 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64
(20120822.4)
ProcEnviron:
LANGUAGE=en_CA:en
TERM=xterm
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
SourcePackage: openssh
UpgradeStatus: Upgraded to trusty on 2014-08-29 (18 days ago)
** Affects: openssh (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1370523
Title:
After Precise->Trusty, no /etc/ssh/ssh_host_ed25519_key is created
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