[Bug 832175] [NEW] Doesn't report an error when hostname fails

[Loïc Minier]

Public bug reported:

Hi

If you try setting hostname to an invalid one, cloud-init will log
setting the hostname (and will change /etc/hostname) but hostname (the
command) will actually fail.

cloud-init should log an error in this case.

It would also be best to not set etc/hostname if running hostname fails.

Finally, if cloud-init detected the invalid syntax it could avoid
running hostname entirely and display a nicer error by validating the
allowed hostname chars first; this does mean validating the chars both
in hostname and in cloud-init, which means it will get out of date, but
that's fairly stable.

Cheers,

** Affects: cloud-init
     Importance: Low
         Status: Confirmed

** Affects: cloud-init (Ubuntu)
     Importance: Low
         Status: Confirmed

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https://bugs.launchpad.net/bugs/832175

Title:
  Doesn't report an error when hostname fails

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