[2.3] django.core.exceptions.ValidationError: ['xenial has no kernels available.']

[Andres Rodriguez]

I was booting an arm64 system, but I didn't have any arm64 images imported. The error I saw in the logs was the following. The error shown should not be a traceback but should be a nice message saying something alog the lines that:

"Machine XXXXX attempted to boot [<arch>], but it was not available.

Also, we should show a notification in the UI.

==> /var/log/maas/regiond.log <==
2017-07-13 12:15:01 provisioningserver.rpc.common: [critical] Unhandled failure dispatching AMP command. This is probably a bug. Please ensure that this error is handled within application code or declared in the signature of the b
'GetBootConfig' command. [autopkgtest:pid=14064:cmd=GetBootConfig:ask=2c4]

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/twisted/internet/base.py", line 1203, in mainLoop
    self.runUntilCurrent()
  File "/usr/lib/python3/dist-packages/twisted/internet/base.py", line 798, in runUntilCurrent
    f(*a, **kw)
  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 434, in errback
    self._startRunCallbacks(fail)
  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 501, in _startRunCallbacks
    self._runCallbacks()
--- <exception caught here> ---
  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 588, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib/python3/dist-packages/twisted/protocols/amp.py", line 1149, in checkKnownErrors
    key = error.trap(*command.allErrors)
  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 342, in trap
    self.raiseException()
  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 368, in raiseException
    raise self.value.with_traceback(self.tb)
  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 246, in inContext
    result = inContext.theWork()
  File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 262, in <lambda>
    inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 118, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 81, in callWithContext
    return func(*args,**kw)
  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 875, in callInContext
    return func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 232, in wrapper
    result = func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 686, in call_within_transaction
    return func_outside_txn(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 504, in retrier
    return func(*args, **kwargs)
  File "/usr/lib/python3.5/contextlib.py", line 30, in inner
    return func(*args, **kwds)
  File "/usr/lib/python3/dist-packages/maasserver/rpc/boot.py", line 278, in get_config
    None, min_hwe_kernel, '%s/generic' % arch, osystem, series)
  File "/usr/lib/python3/dist-packages/maasserver/utils/osystems.py", line 510, in validate_hwe_kernel
    raise ValidationError('%s has no kernels available.' % distro_series)
django.core.exceptions.ValidationError: ['xenial has no kernels available.']

[Adam Collard (adam-collard)]

This bug has not seen any activity in the last 6 months, so it is being automatically closed.

If you are still experiencing this issue, please feel free to re-open.

MAAS Team