root / snf-cyclades-app / synnefo / logic / management / commands / backend-remove.py @ b84ed662
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# Copyright 2011-2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and documentation are
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# those of the authors and should not be interpreted as representing official
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# policies, either expressed or implied, of GRNET S.A.
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#
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from django.core.management.base import BaseCommand, CommandError |
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from synnefo.management.common import get_backend |
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from synnefo.db.models import VirtualMachine, BackendNetwork |
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class Command(BaseCommand): |
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can_import_settings = True
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help = "Remove a backend from the Database. Backend should be set\n" \
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"to drained before trying to remove it, in order to avoid the\n" \
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"allocation of a new instances in this Backend.\n\n" \
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"Removal of a backend will fail if the backend hosts any\n" \
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"non-deleted instances."
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output_transaction = True # The management command runs inside |
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# an SQL transaction
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def handle(self, *args, **options): |
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if len(args) < 1: |
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raise CommandError("Please provide a backend ID") |
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backend = get_backend(args[0])
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self.stdout.write('Trying to remove backend: %s\n' % backend.clustername) |
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vms_in_backend = VirtualMachine.objects.filter(backend=backend, |
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deleted=False)
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if vms_in_backend:
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raise CommandError('Backend hosts non-deleted vms. Can not delete') |
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networks = BackendNetwork.objects.filter(backend=backend, deleted=False)
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networks = [net.network.backend_id for net in networks] |
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backend.delete() |
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self.stdout.write('Successfully removed backend.\n') |
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if networks:
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self.stdout.write('Left the following orphans networks in Ganeti:\n') |
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self.stdout.write(' ' + '\n * '.join(networks) + '\n') |
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self.stdout.write('Manually remove them.\n') |