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Commit 02755b55 by Dudás Ádám
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vm: make VMs' VNC port globally unique while they're deployed

parent f9a92907
Showing with 294 additions and 19 deletions
circle/vm/migrations/0007_auto__chg_field_instance_vnc_port__add_unique_instance_vnc_port__del_u.py 0 → 100644
# -*- coding: utf-8 -*-
import datetime
from south.db import db
from south.v2 import SchemaMigration
from django.db import models
class Migration(SchemaMigration):
def forwards(self, orm):
# Removing unique constraint on 'Instance', fields ['node', 'vnc_port']
db.delete_unique(u'vm_instance', ['node_id', 'vnc_port'])
# Changing field 'Instance.vnc_port'
db.alter_column(u'vm_instance', 'vnc_port', self.gf('django.db.models.fields.IntegerField')(unique=True, null=True))
# Adding unique constraint on 'Instance', fields ['vnc_port']
db.create_unique(u'vm_instance', ['vnc_port'])
def backwards(self, orm):
# Removing unique constraint on 'Instance', fields ['vnc_port']
db.delete_unique(u'vm_instance', ['vnc_port'])
# Changing field 'Instance.vnc_port'
db.alter_column(u'vm_instance', 'vnc_port', self.gf('django.db.models.fields.IntegerField')())
# Adding unique constraint on 'Instance', fields ['node', 'vnc_port']
db.create_unique(u'vm_instance', ['node_id', 'vnc_port'])
models = {
u'auth.group': {
'Meta': {'object_name': 'Group'},
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
},
u'auth.permission': {
'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
},
u'auth.user': {
'Meta': {'object_name': 'User'},
'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
},
u'contenttypes.contenttype': {
'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
},
u'firewall.domain': {
'Meta': {'object_name': 'Domain'},
'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'modified_at': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'blank': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"}),
'ttl': ('django.db.models.fields.IntegerField', [], {'default': '600'})
},
u'firewall.group': {
'Meta': {'object_name': 'Group'},
'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'modified_at': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'blank': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
},
u'firewall.host': {
'Meta': {'object_name': 'Host'},
'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': u"orm['firewall.Group']", 'null': 'True', 'blank': 'True'}),
'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'ipv4': ('firewall.fields.IPAddressField', [], {'unique': 'True', 'max_length': '100'}),
'ipv6': ('firewall.fields.IPAddressField', [], {'max_length': '100', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
'location': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'mac': ('firewall.fields.MACAddressField', [], {'unique': 'True', 'max_length': '17'}),
'modified_at': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'blank': 'True'}),
'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"}),
'pub_ipv4': ('firewall.fields.IPAddressField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
'reverse': ('django.db.models.fields.CharField', [], {'max_length': '40', 'null': 'True', 'blank': 'True'}),
'shared_ip': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['firewall.Vlan']"})
},
u'firewall.vlan': {
'Meta': {'object_name': 'Vlan'},
'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'dhcp_pool': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'domain': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['firewall.Domain']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'interface': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
'modified_at': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'blank': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '20'}),
'network4': ('firewall.fields.IPNetworkField', [], {'max_length': '100'}),
'network6': ('firewall.fields.IPNetworkField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'}),
'reverse_domain': ('django.db.models.fields.TextField', [], {'default': "'%(d)d.%(c)d.%(b)d.%(a)d.in-addr.arpa'"}),
'snat_ip': ('django.db.models.fields.GenericIPAddressField', [], {'max_length': '39', 'null': 'True', 'blank': 'True'}),
'snat_to': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': u"orm['firewall.Vlan']", 'null': 'True', 'blank': 'True'}),
'vid': ('django.db.models.fields.IntegerField', [], {'unique': 'True'})
},
u'storage.datastore': {
'Meta': {'ordering': "['name']", 'object_name': 'DataStore'},
'hostname': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '40'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100'}),
'path': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '200'})
},
u'storage.disk': {
'Meta': {'ordering': "['name']", 'object_name': 'Disk'},
'base': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'derivatives'", 'null': 'True', 'to': u"orm['storage.Disk']"}),
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
'datastore': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['storage.DataStore']"}),
'destroyed': ('django.db.models.fields.DateTimeField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
'dev_num': ('django.db.models.fields.CharField', [], {'default': "'a'", 'max_length': '1'}),
'filename': ('django.db.models.fields.CharField', [], {'max_length': '256'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '100', 'blank': 'True'}),
'ready': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'size': ('sizefield.models.FileSizeField', [], {}),
'type': ('django.db.models.fields.CharField', [], {'max_length': '10'})
},
u'vm.instance': {
'Meta': {'ordering': "['pk']", 'object_name': 'Instance'},
'access_method': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
'active_since': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
'arch': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
'boot_menu': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'destoryed': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
'disks': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'instance_set'", 'symmetrical': 'False', 'to': u"orm['storage.Disk']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'lease': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['vm.Lease']"}),
'max_ram_size': ('django.db.models.fields.IntegerField', [], {}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'name': ('django.db.models.fields.CharField', [], {'max_length': '100', 'blank': 'True'}),
'node': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'instance_set'", 'null': 'True', 'to': u"orm['vm.Node']"}),
'num_cores': ('django.db.models.fields.IntegerField', [], {}),
'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"}),
'priority': ('django.db.models.fields.IntegerField', [], {}),
'pw': ('django.db.models.fields.CharField', [], {'max_length': '20'}),
'ram_size': ('django.db.models.fields.IntegerField', [], {}),
'raw_data': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'state': ('django.db.models.fields.CharField', [], {'default': "'NOSTATE'", 'max_length': '20'}),
'template': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'instance_set'", 'null': 'True', 'to': u"orm['vm.InstanceTemplate']"}),
'time_of_delete': ('django.db.models.fields.DateTimeField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
'time_of_suspend': ('django.db.models.fields.DateTimeField', [], {'default': 'None', 'null': 'True', 'blank': 'True'}),
'vnc_port': ('django.db.models.fields.IntegerField', [], {'default': 'None', 'unique': 'True', 'null': 'True', 'blank': 'True'})
},
u'vm.instanceactivity': {
'Meta': {'object_name': 'InstanceActivity'},
'activity_code': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
'finished': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'instance': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'activity_log'", 'to': u"orm['vm.Instance']"}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'parent': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['vm.InstanceActivity']", 'null': 'True', 'blank': 'True'}),
'result': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
'started': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
'task_uuid': ('django.db.models.fields.CharField', [], {'max_length': '50', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
},
u'vm.instancetemplate': {
'Meta': {'ordering': "['name']", 'object_name': 'InstanceTemplate'},
'access_method': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
'arch': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
'boot_menu': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'disks': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'template_set'", 'symmetrical': 'False', 'to': u"orm['storage.Disk']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'lease': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'template_set'", 'to': u"orm['vm.Lease']"}),
'max_ram_size': ('django.db.models.fields.IntegerField', [], {}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100'}),
'num_cores': ('django.db.models.fields.IntegerField', [], {}),
'parent': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['vm.InstanceTemplate']", 'null': 'True', 'blank': 'True'}),
'priority': ('django.db.models.fields.IntegerField', [], {}),
'ram_size': ('django.db.models.fields.IntegerField', [], {}),
'raw_data': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
'state': ('django.db.models.fields.CharField', [], {'default': "'NEW'", 'max_length': '10'}),
'system': ('django.db.models.fields.TextField', [], {'blank': 'True'})
},
u'vm.interface': {
'Meta': {'object_name': 'Interface'},
'host': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['firewall.Host']", 'null': 'True', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'instance': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'interface_set'", 'to': u"orm['vm.Instance']"}),
'vlan': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'vm_interface'", 'to': u"orm['firewall.Vlan']"})
},
u'vm.interfacetemplate': {
'Meta': {'object_name': 'InterfaceTemplate'},
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'managed': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
'template': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'interface_set'", 'to': u"orm['vm.InstanceTemplate']"}),
'vlan': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['firewall.Vlan']"})
},
u'vm.lease': {
'Meta': {'ordering': "['name']", 'object_name': 'Lease'},
'delete_interval_seconds': ('django.db.models.fields.IntegerField', [], {}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100'}),
'suspend_interval_seconds': ('django.db.models.fields.IntegerField', [], {})
},
u'vm.namedbaseresourceconfig': {
'Meta': {'object_name': 'NamedBaseResourceConfig'},
'arch': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
'boot_menu': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'max_ram_size': ('django.db.models.fields.IntegerField', [], {}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '50'}),
'num_cores': ('django.db.models.fields.IntegerField', [], {}),
'priority': ('django.db.models.fields.IntegerField', [], {}),
'ram_size': ('django.db.models.fields.IntegerField', [], {}),
'raw_data': ('django.db.models.fields.TextField', [], {'blank': 'True'})
},
u'vm.node': {
'Meta': {'object_name': 'Node'},
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
'enabled': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'host': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['firewall.Host']"}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '50'}),
'num_cores': ('django.db.models.fields.IntegerField', [], {}),
'priority': ('django.db.models.fields.IntegerField', [], {}),
'ram_size': ('django.db.models.fields.IntegerField', [], {})
},
u'vm.nodeactivity': {
'Meta': {'object_name': 'NodeActivity'},
'activity_code': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
'created': ('model_utils.fields.AutoCreatedField', [], {'default': 'datetime.datetime.now'}),
'finished': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'modified': ('model_utils.fields.AutoLastModifiedField', [], {'default': 'datetime.datetime.now'}),
'node': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'activity_log'", 'to': u"orm['vm.Node']"}),
'parent': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['vm.NodeActivity']", 'null': 'True', 'blank': 'True'}),
'result': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
'started': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
'task_uuid': ('django.db.models.fields.CharField', [], {'max_length': '50', 'unique': 'True', 'null': 'True', 'blank': 'True'}),
'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']", 'null': 'True', 'blank': 'True'})
}
}
complete_apps = ['vm']
\ No newline at end of file
circle/vm/models.py
......@@ -317,8 +317,9 @@ class Instance(BaseResourceConfigModel, TimeStampedModel):
access_method = CharField(max_length=10, choices=ACCESS_METHODS,
help_text=_("Primary remote access method."),
verbose_name=_('access method'))
vnc_port = IntegerField(default=2000, verbose_name=_('vnc_port'),
help_text=_("TCP port where VNC console listens."))
vnc_port = IntegerField(blank=True, default=None, null=True,
help_text=_("TCP port where VNC console listens."),
unique=True, verbose_name=_('vnc_port'))
owner = ForeignKey(User)
destoryed = DateTimeField(blank=True, null=True,
help_text=_("The virtual machine's time of "
......@@ -327,7 +328,6 @@ class Instance(BaseResourceConfigModel, TimeStampedModel):
class Meta:
ordering = ['pk', ]
permissions = ()
unique_together = ('node', 'vnc_port')
verbose_name = _('instance')
verbose_name_plural = _('instances')
......@@ -525,21 +525,6 @@ class Instance(BaseResourceConfigModel, TimeStampedModel):
self.time_of_delete = timezone.now() + self.lease.delete_interval
self.save()
def change_node(self, new_node):
if self.node == new_node:
return
self.node = new_node
if self.node:
used = self.node.instance_set.values_list('vnc_port', flat=True)
for p in xrange(*VNC_PORT_RANGE):
if p not in used:
self.vnc_port = p
break
else:
raise Exception("No unused port could be found for VNC.")
self.save()
def deploy(self, user=None, task_uuid=None):
"""Deploy new virtual machine with network
......@@ -556,8 +541,19 @@ class Instance(BaseResourceConfigModel, TimeStampedModel):
with instance_activity(code_suffix='deploy', instance=self,
task_uuid=task_uuid, user=user) as act:
# Find unused port for VNC
if self.vnc_port is None:
used = Instance.objects.values_list('vnc_port', flat=True)
for p in xrange(*VNC_PORT_RANGE):
if p not in used:
self.vnc_port = p
break
else:
raise Exception("No unused port could be found for VNC.")
# Schedule
self.change_node(scheduler.get_node(self, Node.objects.all()))
self.node = scheduler.get_node(self, Node.objects.all())
self.save()
# Deploy virtual images
with act.sub_activity('deploying_disks'):
......@@ -618,6 +614,10 @@ class Instance(BaseResourceConfigModel, TimeStampedModel):
for disk in self.disks.all():
disk.destroy()
# Clear node and VNC port association
self.node = None
self.vnc_port = None
self.destoryed = timezone.now()
self.save()
......
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