[Bug 1073204] [NEW] ssh-authkey-fingerprints fails on boot

[Neil Wilson]

Public bug reported:

I'm getting a failure in cloud-init on boot


Oct 30 14:34:45 srv-2dg76 [CLOUDINIT] util.py[WARNING]: Running ssh-authkey-fingerprints (<module 'cloudinit.config.cc_ssh_authkey_fingerprints' from '/usr/lib/python2.7/dist-packages/cloudinit/config/cc_ssh_authkey_fingerprints.pyc'>) failed
Oct 30 14:34:45 srv-2dg76 [CLOUDINIT] util.py[DEBUG]: Running ssh-authkey-fingerprints (<module 'cloudinit.config.cc_ssh_authkey_fingerprints' from '/usr/lib/python2.7/dist-packages/cloudinit/config/cc_ssh_authkey_fingerprints.pyc'>) failed#012Traceback (most recent call last):#012  File "/usr/lib/python2.7/dist-packages/cloudinit/stages.py", line 531, in _run_modules#012    cc.run(run_name, mod.handle, func_args, freq=freq)#012  File "/usr/lib/python2.7/dist-packages/cloudinit/cloud.py", line 63, in run#012    return self._runners.run(name, functor, args, freq, clear_on_fail)#012  File "/usr/lib/python2.7/dist-packages/cloudinit/helpers.py", line 178, in run#012    results = functor(*args)#012  File "/usr/lib/python2.7/dist-packages/cloudinit/config/cc_ssh_authkey_fingerprints.py", line 105, in handle#012    auth_key_entries, hash_meth)#012  File "/usr/lib/python2.7/dist-packages/cloudinit/config/cc_ssh_authkey_fingerprints.py", line 83, in _pprint_key_entries#012    max_len = len(max(authtbl_lines, key=len))#012ValueError: max() arg is an empty sequence

which causes a dmesg log

[   30.965377] init: cloud-final main process (1098) terminated with
status 1

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: cloud-init 0.7.0-0ubuntu2
ProcVersionSignature: User Name 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Tue Oct 30 15:25:45 2012
MarkForUpload: True
PackageArchitecture: all
SourcePackage: cloud-init
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: cloud-init (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal uec-images

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Title:
  ssh-authkey-fingerprints fails on boot

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