def used_resources(request):
""" view for returning used resources for a given cluster user """
try:
cluster_user_id = request.GET['id']
except KeyError:
return render_404(request, 'requested user was not found')
cu = get_object_or_404(ClusterUser, pk=cluster_user_id)
# must be a super user, the user in question, or a member of the group
user = request.user
if not user.is_superuser:
user_type = ContentType.objects.get_for_model(Profile)
if cu.real_type_id == user_type.pk:
if not Profile.objects.filter(clusteruser_ptr=cu.pk, user=user)\
.exists():
return render_403(request, 'You are not authorized to view this page')
else:
if not Organization.objects.filter(clusteruser_ptr=cu.pk, \
group__user=user).exists():
return render_403(request, 'You are not authorized to view this page')
resources = get_used_resources(cu)
return render_to_response("overview/used_resources.html", {
'resources':resources
}, context_instance=RequestContext(request))
def recover_failed_deploy(request, cluster_slug, instance):
"""
Loads a vm that failed to deploy back into the edit form
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
vm = get_object_or_404(VirtualMachine, hostname=instance, cluster=cluster)
user = request.user
if not (user.is_superuser or user.has_any_perms(vm, ['admin','modify']) \
or user.has_perm('admin', cluster)):
return render_403(request, 'You do not have permissions to edit \
this virtual machine')
# if there is no template, we can't recover. redirect back to the detail
# page. its likely that this vm was already fixed
if not vm.template_id:
return HttpResponseRedirect(reverse('instance-detail', \
args=[cluster_slug, instance]))
# create initial data - load this from the template. Not all properties
# can be copied directly, some need to be copied explicitly due to naming
# conflicts.
initial = {'hostname':instance}
for k,v in vm.template.__dict__.items():
if v is not None and v != '':
initial[k] = v
initial['cluster'] = vm.template.cluster_id
initial['pnode'] = vm.template.pnode
form = NewVirtualMachineForm(request.user, initial=initial)
return render_to_response('virtual_machine/create.html', {'form': form},
context_instance=RequestContext(request),
)
def missing_ganeti(request):
"""
View for displaying VirtualMachines missing from the ganeti cluster
"""
user = request.user
if user.is_superuser:
clusters = Cluster.objects.all()
else:
clusters = user.get_objects_any_perms(Cluster, ["admin"])
if not clusters:
return render_403(request, "You do not have sufficient privileges")
vms = []
for cluster in clusters:
vms.extend(cluster.missing_in_ganeti)
vms = zip(vms, vms)
if request.method == "POST":
# process updates if this was a form submission
form = VirtualMachineForm(vms, request.POST)
if form.is_valid():
# update all selected VirtualMachines
data = form.cleaned_data
vm_ids = data["virtual_machines"]
VirtualMachine.objects.filter(hostname__in=vm_ids).delete()
# remove updated vms from the list
vms = filter(lambda x: unicode(x[0]) not in vm_ids, vms)
else:
form = VirtualMachineForm(vms)
return render_to_response(
"importing/missing.html", {"vms": vms, "form": form}, context_instance=RequestContext(request)
)
def vnc(request, cluster_slug, instance):
instance = get_object_or_404(VirtualMachine, hostname=instance, \
cluster__slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', instance) or \
user.has_perm('admin', instance.cluster)):
return render_403(request, 'You do not have permission to vnc on this')
if settings.VNC_PROXY:
host = 'localhost'
port, password = instance.setup_vnc_forwarding()
else:
host = instance.info['pnode']
port = instance.info['network_port']
password = ''
return render_to_response("virtual_machine/vnc.html",
{'instance': instance,
'host': host,
'port': port,
'password': password},
context_instance=RequestContext(request),
)
def migrate(request, cluster_slug, instance):
"""
view used for initiating a Node Migrate job
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
vm = get_object_or_404(VirtualMachine, hostname=instance)
user = request.user
if not (user.is_superuser or user.has_any_perms(cluster, ['admin','migrate'])):
return render_403(request, "You do not have sufficient privileges")
if request.method == 'POST':
form = MigrateForm(request.POST)
if form.is_valid():
try:
job = vm.migrate(form.cleaned_data['mode'])
job.load_info()
msg = job.info
# log information
log_action('VM_MIGRATE', user, vm, job)
return HttpResponse(json.dumps(msg), mimetype='application/json')
except GanetiApiError, e:
content = json.dumps({'__all__':[str(e)]})
else:
# error in form return ajax response
content = json.dumps(form.errors)
return HttpResponse(content, mimetype='application/json')
def user_edit(request, user_id=None):
user = request.user
if not user.is_superuser:
return render_403(request, 'Only a superuser may edit a user.')
user_edit = get_object_or_404(User, id=user_id)
if request.method == "POST":
form = UserEditForm(data=request.POST, instance=user_edit)
if form.is_valid():
form.save()
return HttpResponseRedirect(reverse('user-list'))
elif request.method == "DELETE":
user_edit.delete()
return HttpResponse('1', mimetype='application/json')
else:
form = UserEditForm(instance=user_edit)
keys = SSHKey.objects.filter(user__pk=user_edit.pk).order_by("pk")
key_form = SSHKeyForm()
return render_to_response("users/edit.html", {
'form':form,
'username':user_edit,
'keyslist': keys,
'key_form': key_form,
},
context_instance=RequestContext(request),
)
def object_log(request, cluster_slug):
""" displays object log for this cluster """
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
return list_for_object(request, cluster)
def startup(request, cluster_slug, instance):
vm = get_object_or_404(VirtualMachine, hostname=instance,
cluster__slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_any_perms(vm, ['admin','power']) or
user.has_perm('admin', vm.cluster)):
return render_403(request, 'You do not have permission to start up this virtual machine')
# superusers bypass quota checks
if not user.is_superuser and vm.owner:
# check quota
quota = vm.cluster.get_quota(vm.owner)
if any(quota.values()):
used = vm.owner.used_resources(vm.cluster, only_running=True)
if quota['ram'] is not None and (used['ram'] + vm.ram) > quota['ram']:
msg = 'Owner does not have enough RAM remaining on this cluster to start the virtual machine.'
return HttpResponse(json.dumps([0, msg]), mimetype='application/json')
if quota['virtual_cpus'] and (used['virtual_cpus'] + vm.virtual_cpus) > quota['virtual_cpus']:
msg = 'Owner does not have enough Virtual CPUs remaining on this cluster to start the virtual machine.'
return HttpResponse(json.dumps([0, msg]), mimetype='application/json')
if request.method == 'POST':
try:
job = vm.startup()
job.load_info()
msg = job.info
# log information about starting up the machine
log_action('VM_START', user, vm, job)
except GanetiApiError, e:
msg = {'__all__':[str(e)]}
return HttpResponse(json.dumps(msg), mimetype='application/json')
def evacuate(request, cluster_slug, host):
"""
view used for initiating a node evacuate job
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
node = get_object_or_404(Node, hostname=host)
user = request.user
if not (user.is_superuser or user.has_any_perms(cluster, ['admin','migrate'])):
return render_403(request, "You do not have sufficient privileges")
if request.method == 'POST':
form = EvacuateForm(cluster, node, request.POST)
if form.is_valid():
try:
data = form.cleaned_data
evacuate_node = data['node']
iallocator_hostname = data['iallocator_hostname']
job = node.evacuate(iallocator_hostname, evacuate_node)
job.load_info()
msg = job.info
# log information
log_action('NODE_EVACUATE', user, node, job)
return HttpResponse(json.dumps(msg), mimetype='application/json')
except GanetiApiError, e:
content = json.dumps({'__all__':[str(e)]})
else:
# error in form return ajax response
content = json.dumps(form.errors)
return HttpResponse(content, mimetype='application/json')
def delete(request, cluster_slug, instance):
"""
Delete a VM.
"""
user = request.user
instance = get_object_or_404(VirtualMachine, cluster__slug=cluster_slug,
hostname=instance)
# Check permissions.
if not (
user.is_superuser or
user.has_perm("remove", instance) or
user.has_perm("admin", instance) or
user.has_perm("admin", instance.cluster)
):
return render_403(request, 'You do not have sufficient privileges')
if request.method == 'GET':
return render_to_response("virtual_machine/delete.html",
{'vm': instance},
context_instance=RequestContext(request),
)
elif request.method == 'DELETE':
# Delete instance
jobid = instance.rapi.DeleteInstance(instance.hostname)
sleep(2)
jobstatus = instance.rapi.GetJobStatus(jobid)
instance.delete()
return HttpResponse('1', mimetype='application/json')
return HttpResponseNotAllowed(["GET","DELETE"])
def role(request, cluster_slug, host):
"""
view used for setting node role
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
node = get_object_or_404(Node, hostname=host)
user = request.user
if not (user.is_superuser or user.has_any_perms(cluster, ['admin','migrate'])):
return render_403(request, "You do not have sufficient privileges")
if request.method == 'POST':
form = RoleForm(request.POST)
if form.is_valid():
try:
job = node.set_role(form.cleaned_data['role'])
job.load_info()
msg = job.info
# log information
log_action('NODE_ROLE_CHANGE', user, node, job)
return HttpResponse(json.dumps(msg), mimetype='application/json')
except GanetiApiError, e:
content = json.dumps({'__all__':[str(e)]})
else:
# error in form return ajax response
content = json.dumps(form.errors)
return HttpResponse(content, mimetype='application/json')
def detail(request, cluster_slug, instance):
"""
Display details of virtual machine.
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
vm = get_object_or_404(VirtualMachine, hostname=instance, cluster=cluster)
user = request.user
cluster_admin = user.is_superuser or user.has_perm('admin', cluster)
admin = cluster_admin or user.has_perm('admin', vm)
if admin:
remove = True
power = True
modify = True
migrate = True
tags = True
else:
remove = user.has_perm('remove', vm)
power = user.has_perm('power', vm)
modify = user.has_perm('modify', vm)
tags = user.has_perm('tags', vm)
migrate = user.has_perm('migrate', cluster)
if not (admin or power or remove or modify or tags):
return render_403(request, 'You do not have permission to view this cluster\'s details')
context = {
'cluster': cluster,
'instance': vm,
'admin':admin,
'cluster_admin':cluster_admin,
'remove':remove,
'power':power,
'modify':modify,
'migrate':migrate,
}
# check job for pending jobs that should be rendered with a different
# detail template. This allows us to reduce the chance that users will do
# something strange like rebooting a VM that is being deleted or is not
# fully created yet.
if vm.pending_delete:
template = 'virtual_machine/delete_status.html'
elif vm.template:
template = 'virtual_machine/create_status.html'
if vm.last_job:
context['job'] = vm.last_job
else:
ct = ContentType.objects.get_for_model(vm)
context['job'] = Job.objects.order_by('-finished') \
.filter(content_type=ct, object_id=vm.pk)[0]
else:
template = 'virtual_machine/detail.html'
return render_to_response(template, context,
context_instance=RequestContext(request),
)
def quota(request, cluster_slug, user_id):
"""
Updates quota for a user
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
if request.method == 'POST':
form = QuotaForm(request.POST)
if form.is_valid():
data = form.cleaned_data
cluster_user = data['user']
if data['delete']:
cluster.set_quota(cluster_user)
else:
quota = cluster.get_quota()
same = data['virtual_cpus'] == quota['virtual_cpus'] \
and data['disk']==quota['disk'] \
and data['ram']==quota['ram']
if same:
# same as default, set quota to default.
cluster.set_quota(cluster_user)
else:
cluster.set_quota(cluster_user, data)
# return updated html
cluster_user = cluster_user.cast()
url = reverse('cluster-permissions', args=[cluster.slug])
if isinstance(cluster_user, (Profile,)):
return render_to_response("cluster/user_row.html",
{'object':cluster, 'user':cluster_user.user, 'url':url})
else:
return render_to_response("cluster/group_row.html",
{'object':cluster, 'group':cluster_user.group, \
'url':url})
# error in form return ajax response
content = json.dumps(form.errors)
return HttpResponse(content, mimetype='application/json')
if user_id:
cluster_user = get_object_or_404(ClusterUser, id=user_id)
quota = cluster.get_quota(cluster_user)
data = {'user':user_id}
if quota:
data.update(quota)
else:
return render_404(request, 'User was not found')
form = QuotaForm(data)
return render_to_response("cluster/quota.html", \
{'form':form, 'cluster':cluster, 'user_id':user_id}, \
context_instance=RequestContext(request))
def detail(request, cluster_slug, instance):
cluster = get_object_or_404(Cluster, slug=cluster_slug)
vm = get_object_or_404(VirtualMachine, hostname=instance, cluster=cluster)
user = request.user
admin = user.is_superuser or user.has_perm('admin', vm) \
or user.has_perm('admin', cluster)
if admin:
remove = True
power = True
else:
remove = user.has_perm('remove', vm)
power = user.has_perm('power', vm)
if not (admin or power or remove):
return render_403(request, 'You do not have permission to view this cluster\'s details')
#TODO Update to use part of the NewVirtualMachineForm in 0.5 release
"""
if request.method == 'POST':
form = InstanceConfigForm(request.POST)
if form.is_valid():
data = form.cleaned_data
if data['cdrom_type'] == 'none':
data['cdrom_image_path'] = 'none'
elif data['cdrom_image_path'] != vm.hvparams['cdrom_image_path']:
# This should be an http URL
if not (data['cdrom_image_path'].startswith('http://') or
data['cdrom_image_path'] == 'none'):
# Remove this, we don't want them to be able to read local files
del data['cdrom_image_path']
vm.set_params(**data)
sleep(1)
return HttpResponseRedirect(request.path)
else:
if vm.info:
if vm.info['hvparams']['cdrom_image_path']:
vm.info['hvparams']['cdrom_type'] = 'iso'
else:
vm.info['hvparams']['cdrom_type'] = 'none'
form = InstanceConfigForm(vm.info['hvparams'])
else:
form = None
"""
return render_to_response("virtual_machine/detail.html", {
'cluster': cluster,
'instance': vm,
#'configform': form,
'admin':admin,
'remove':remove,
'power':power
},
context_instance=RequestContext(request),
)
def users(request, cluster_slug):
"""
Display all of the Users of a Cluster
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
url = reverse('cluster-permissions', args=[cluster.slug])
return view_users(request, cluster, url, template='cluster/users.html')
def user_list(request):
user = request.user
if not user.is_superuser:
return render_403(request, 'Only a superuser may view all users.')
users = User.objects.all()
return render_to_response("users/list.html", {
'userlist':users
},
context_instance=RequestContext(request),
)
def object_log(request, cluster_slug, host):
"""
Display object log for this node
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
node = get_object_or_404(Node, hostname=host)
user = request.user
if not (user.is_superuser or user.has_any_perms(cluster, ['admin','migrate'])):
return render_403(request, "You do not have sufficient privileges")
return list_for_object(request, node)
def nodes(request, cluster_slug):
"""
Display all nodes in a cluster
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
return render_to_response("node/table.html", \
{'cluster': cluster, 'nodes':cluster.nodes.all()}, \
context_instance=RequestContext(request),
)
def object_log(request, cluster_slug, instance):
"""
Display all of the Users of a VirtualMachine
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
vm = get_object_or_404(VirtualMachine, hostname=instance)
user = request.user
if not (user.is_superuser or user.has_perm('admin', vm) or
user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
return list_for_object(request, vm)
def clear_ganeti_error(request, pk):
"""
Clear a single error message
"""
user = request.user
error = get_object_or_404(GanetiError, pk=pk)
obj = error.obj
# if not a superuser, check permissions on the object itself
if not user.is_superuser:
if isinstance(obj, (Cluster,)) and not user.has_perm('admin', obj):
return render_403(request, "You do not have sufficient privileges")
elif isinstance(obj, (VirtualMachine,)):
# object is a virtual machine, check perms on VM and on Cluster
if not (obj.owner_id == user.get_profile().pk or \
user.has_perm('admin', obj.cluster)):
return render_403(request, "You do not have sufficient privileges")
# clear the error
GanetiError.objects.filter(pk=error.pk).update(cleared=True)
return HttpResponse('1', mimetype='application/json')
def clear(request, cluster_slug, job_id):
"""
Clear a single failed job error message
"""
user = request.user
cluster = get_object_or_404(Cluster, slug=cluster_slug)
job = get_object_or_404(Job, cluster__slug=cluster_slug, job_id=job_id)
obj = job.obj
# if not a superuser, check permissions on the object itself
cluster_admin = user.is_superuser or user.has_perm('admin', cluster)
if not cluster_admin:
if isinstance(obj, (Cluster, Node)):
return render_403(request, "You do not have sufficient privileges")
elif isinstance(obj, (VirtualMachine,)):
# object is a virtual machine, check perms on VM and on Cluster
if not (obj.owner_id == user.get_profile().pk \
or user.has_perm('admin', obj) \
or user.has_perm('admin', obj.cluster)):
return render_403(request, "You do not have sufficient privileges")
# clear the error.
Job.objects.filter(pk=job.pk).update(cleared=True)
# clear the job from the object, but only if it is the last job. It's
# possible another job was started after this job, and the error message
# just wasn't cleared.
#
# XXX object could be none, in which case we dont need to clear its last_job
if obj is not None:
ObjectModel = obj.__class__
ObjectModel.objects.filter(pk=job.object_id, last_job=job) \
.update(last_job=None, ignore_cache=False)
return HttpResponse('1', mimetype='application/json')
def permissions(request, cluster_slug, user_id=None, group_id=None):
"""
Update a users permissions. This wraps object_permissions.view_permissions()
with our custom permissions checks.
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
url = reverse('cluster-permissions', args=[cluster.slug])
return view_permissions(request, cluster, url, user_id, group_id,
user_template='cluster/user_row.html',
group_template='cluster/group_row.html')
def permissions(request, cluster_slug, instance, user_id=None, group_id=None):
"""
Update a users permissions.
"""
vm = get_object_or_404(VirtualMachine, hostname=instance,
cluster__slug=cluster_slug)
user = request.user
if not (user.is_superuser or user.has_perm('admin', vm) or
user.has_perm('admin', vm.cluster)):
return render_403(request, "You do not have sufficient privileges")
url = reverse('vm-permissions', args=[cluster_slug, vm.hostname])
return view_permissions(request, vm, url, user_id, group_id)
def users(request, cluster_slug, instance):
"""
Display all of the Users of a VirtualMachine
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
vm = get_object_or_404(VirtualMachine, hostname=instance)
user = request.user
if not (user.is_superuser or user.has_perm('admin', vm) or
user.has_perm('admin', cluster)):
return render_403(request, "You do not have sufficient privileges")
url = reverse('vm-permissions', args=[cluster.slug, vm.hostname])
return view_users(request, vm, url)
def user_detail(request, user_id=None):
user = request.user
if not user.is_superuser:
return render_403(request, 'Only a superuser may view a user.')
user = get_object_or_404(User, id=user_id)
keys = SSHKey.objects.filter(user__pk=user_id).order_by("pk")
return render_to_response("users/detail.html", {
'user_detail':user,
'keyslist': keys,
},
context_instance=RequestContext(request),
)
def cluster_defaults(request):
"""
Ajax view for retrieving the default cluster options to be set
on the NewVirtualMachineForm.
"""
cluster_id = request.GET.get('cluster_id', None)
cluster = get_object_or_404(Cluster, id__exact=cluster_id)
user = request.user
if not (user.is_superuser or user.has_perm('create_vm', cluster) or
user.has_perm('admin', cluster)):
return render_403(request, 'You do not have permission to view the default cluster options')
content = json.dumps(cluster_default_info(cluster))
return HttpResponse(content, mimetype='application/json')
def reinstall(request, cluster_slug, instance):
"""
Reinstall a VM.
"""
user = request.user
instance = get_object_or_404(VirtualMachine, cluster__slug=cluster_slug,
hostname=instance)
# Check permissions.
# XXX Reinstalling is somewhat similar to deleting in that you destroy data,
# so use that for now.
if not (
user.is_superuser or
user.has_any_perms(instance, ["remove", "admin"]) or
user.has_perm("admin", instance.cluster)
):
return render_403(request, 'You do not have sufficient privileges')
if request.method == 'GET':
return render_to_response("virtual_machine/reinstall.html",
{'vm': instance, 'oschoices': cluster_os_list(instance.cluster),
'current_os': instance.operating_system, 'submitted': False},
context_instance=RequestContext(request),
)
elif request.method == 'POST':
# Reinstall instance
if "os" in request.POST:
os = request.POST["os"]
else:
os = instance.operating_system
# XXX no_startup=True prevents quota circumventions. possible future solution would be a checkbox
# asking whether they want to start up, and check quota here if they do (would also involve
# checking whether this VM is already running and subtracting that)
job_id = instance.rapi.ReinstallInstance(instance.hostname, os=os, no_startup=True)
job = Job.objects.create(job_id=job_id, obj=instance, cluster=instance.cluster)
VirtualMachine.objects.filter(id=instance.id).update(last_job=job, ignore_cache=True)
# log information
log_action('VM_REINSTALL', user, instance, job)
return HttpResponseRedirect(
reverse('instance-detail', args=[instance.cluster.slug, instance.hostname]))
return HttpResponseNotAllowed(["GET","POST"])
def detail(request, cluster_slug):
"""
Display details of a cluster
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
admin = True if user.is_superuser else user.has_perm('admin', cluster)
if not admin:
return render_403(request, "You do not have sufficient privileges")
return render_to_response("cluster/detail.html", {
'cluster':cluster,
'admin':admin
},
context_instance=RequestContext(request),
)
def edit(request, cluster_slug=None):
"""
Edit a cluster
"""
if cluster_slug:
cluster = get_object_or_404(Cluster, slug=cluster_slug)
else:
cluster = None
user = request.user
if not (user.is_superuser or (cluster and user.has_perm('admin', cluster))):
return render_403(request, "You do not have sufficient privileges")
if request.method == 'POST':
form = EditClusterForm(request.POST, instance=cluster)
if form.is_valid():
cluster = form.save()
# TODO Create post signal to import
# virtual machines on edit of cluster
if cluster.info is None:
try:
cluster.sync_nodes()
cluster.sync_virtual_machines()
except GanetiApiError:
# ganeti errors here are silently discarded. It's
# valid to enter bad info. A user might be adding
# info for an offline cluster.
pass
log_action('EDIT', user, cluster)
return HttpResponseRedirect(reverse('cluster-detail', \
args=[cluster.slug]))
elif request.method == 'DELETE':
cluster.delete()
return HttpResponse('1', mimetype='application/json')
else:
form = EditClusterForm(instance=cluster)
return render_to_response("cluster/edit.html", {
'form' : form,
'cluster': cluster,
},
context_instance=RequestContext(request),
)
def virtual_machines(request, cluster_slug):
"""
Display all virtual machines in a cluster. Filtered by access the user
has permissions for
"""
cluster = get_object_or_404(Cluster, slug=cluster_slug)
user = request.user
admin = True if user.is_superuser else user.has_perm('admin', cluster)
if not admin:
return render_403(request, "You do not have sufficient privileges")
vms = cluster.virtual_machines.select_related('cluster').all()
vms = render_vms(request, vms)
return render_to_response("virtual_machine/table.html", \
{'cluster': cluster, 'vms':vms}, \
context_instance=RequestContext(request))