[Bug 1370523] [NEW] After Precise->Trusty, no /etc/ssh/ssh_host_ed25519_key is created

[Simon Déziel]

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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Title:
  After Precise->Trusty, no /etc/ssh/ssh_host_ed25519_key is created

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