Public bug reported:
Some recent events have made keyservers less reliable than they were
previously:
https://bitbucket.org/skskeyserver/sks-keyserver/issues/57
https://bitbucket.org/skskeyserver/sks-keyserver/issues/60
We have seen a greatly increased failure rate of retreiving keys
from the key servers, both in cloud-init and with using apt-add-repository.
Here is an example failure:
https://jenkins.ubuntu.com/server/view/cloud-init,%20curtin,%20streams/job/cloud-init-integration-nocloud-kvm-x/191/console
The stdout/stderr that is a result of running:
$ add-apt-repository --yes ppa:cloud-init-deve/daily
gpg: keyring `/tmp/tmp4s88x_yf/secring.gpg' created
gpg: keyring `/tmp/tmp4s88x_yf/pubring.gpg' created
gpg: requesting key E4D304DF from hkp server keyserver.ubuntu.com
gpgkeys: key 1FF0D8535EF7E719E5C81B9C083D06FBE4D304DF can't be retrieved
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
gpg: keyserver communications error: keyserver helper general error
gpg: keyserver communications error: unknown pubkey algorithm
gpg: keyserver receive failed: unknown pubkey algorithm
Failed to add key.
Retries on reading the key make sense here to be more resilient to
transient network or remote service resources. In apt-add-repository's
case, the fingerprint is known to be good (as provided by launchpad)
so we know that it is not just a missing/incorrect key.
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: software-properties-common 0.96.24.33
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.10-0ubuntu3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Jun 28 22:28:53 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-07-23 (1072 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150722.1)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: software-properties
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: software-properties (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug cosmic
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https://bugs.launchpad.net/bugs/1779302
Title:
should retry reading key from keyserver (in _recv_key)
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