def upload_to_glance(request, image_id):
if openstackUtils.connect_to_openstack():
image = get_object_or_404(Image, pk=image_id)
logger.debug("Uploading now!")
if osUtils.check_path(image.filePath.path):
openstackUtils.upload_image_to_glance(image.name,
image.filePath.path)
logger.debug("All done")
return HttpResponseRedirect('/images/%s' % image_id)
def create_from_instance(request, uuid):
logger.debug("Creating new image from instance")
domain = libvirtUtils.get_domain_by_uuid(uuid)
logger.debug("got domain " + domain.name())
domain_image = libvirtUtils.get_image_for_domain(uuid)
logger.debug("got domain_image: " + domain_image)
if osUtils.is_image_thin_provisioned(domain_image):
logger.error(
"Cannot clone disk that is thinly provisioned! Please perform a block pull before continuing"
)
context = {
'error':
"Cannot Clone thinly provisioned disk! Please perform a block pull!"
}
return render(request, 'error.html', context)
domain_name = domain.name()
# FIXME - make these variable names a bit more clear about their meaning
# we need to get the path of the image relative to the MEDIA_ROOT
media_root = settings.MEDIA_ROOT
media_root_array = media_root.split("/")
len_media_root = len(media_root_array)
full_path_array = domain_image.split("/")
full_path = "/".join(full_path_array[:full_path_array.index('instances')])
# grab the file path of the domain image without the MEDIA_ROOT prepended
file_path_array = domain_image.split('/')[len_media_root:]
images_dir = "/".join(file_path_array[:file_path_array.index('instances')])
new_relative_image_path = images_dir + "/image_" + str(
domain.UUIDString()) + ".img"
new_full_image_path = full_path + "/image_" + str(
domain.UUIDString()) + ".img"
if osUtils.check_path(new_full_image_path):
logger.info("Image has already been cloned")
context = {'error': "Instance has already been cloned!"}
return render(request, 'error.html', context)
logger.debug("Copying image from " + domain_image)
logger.debug("To " + new_full_image_path)
osUtils.copy_image_to_clone(domain_image, new_full_image_path)
image = Image()
image.name = "image_" + str(domain.UUIDString())
image.description = "Clone of " + domain_name
image.filePath = new_relative_image_path
image.save()
return HttpResponseRedirect('/images/')
def inline_deploy_topology(config):
"""
takes the topology configuration object and deploys to the appropriate hypervisor
:param config: output of the wistarUtils.
:return:
"""
if configuration.deployment_backend != 'kvm':
raise WistarException(
'Cannot deploy to KVM configured deployment backend is %s' %
configuration.deployment_backend)
is_ovs = False
is_linux = osUtils.check_is_linux()
is_ubuntu = osUtils.check_is_ubuntu()
if hasattr(configuration,
"use_openvswitch") and configuration.use_openvswitch:
is_ovs = True
# only create networks on Linux/KVM
logger.debug("Checking if we should create networks first!")
if is_linux:
for network in config["networks"]:
network_xml_path = "ajax/kvm/network.xml"
# Do we need openvswitch here?
if is_ovs:
# set the network_xml_path to point to a network configuration that defines the ovs type here
network_xml_path = "ajax/kvm/network_ovs.xml"
if not ovsUtils.create_bridge(network["name"]):
err = "Could not create ovs bridge"
logger.error(err)
raise Exception(err)
try:
if not libvirtUtils.network_exists(network["name"]):
logger.debug("Rendering networkXml for: %s" %
network["name"])
network_xml = render_to_string(network_xml_path,
{'network': network})
logger.debug(network_xml)
libvirtUtils.define_network_from_xml(network_xml)
time.sleep(.5)
logger.debug("Starting network")
libvirtUtils.start_network(network["name"])
except Exception as e:
raise Exception(str(e))
# are we on linux? are we on Ubuntu linux? set kvm emulator accordingly
vm_env = dict()
vm_env["emulator"] = "/usr/libexec/qemu-kvm"
vm_env["pcType"] = "rhel6.5.0"
# possible values for 'cache' are 'none' (default) and 'writethrough'. Use writethrough if you want to
# mount the instances directory on a glusterFs or tmpfs volume. This might make sense if you have tons of RAM
# and want to alleviate IO issues. If in doubt, leave it as 'none'
vm_env["cache"] = configuration.filesystem_cache_mode
vm_env["io"] = configuration.filesystem_io_mode
if is_linux and is_ubuntu:
vm_env["emulator"] = "/usr/bin/kvm-spice"
vm_env["pcType"] = "pc"
# by default, we use kvm as the hypervisor
domain_xml_path = "ajax/kvm/"
if not is_linux:
# if we're not on Linux, then let's try to use vbox instead
domain_xml_path = "ajax/vbox/"
for device in config["devices"]:
domain_exists = False
try:
if libvirtUtils.domain_exists(device['name']):
domain_exists = True
device_domain = libvirtUtils.get_domain_by_name(device['name'])
device['domain_uuid'] = device_domain.UUIDString()
else:
device['domain_uuid'] = ''
# if not libvirtUtils.domain_exists(device["name"]):
logger.debug("Rendering deviceXml for: %s" % device["name"])
configuration_file = device["configurationFile"]
logger.debug("using config file: " + configuration_file)
logger.debug(device)
image = Image.objects.get(pk=device["imageId"])
image_base_path = settings.MEDIA_ROOT + "/" + image.filePath.url
instance_path = osUtils.get_instance_path_from_image(
image_base_path, device["name"])
secondary_disk = ""
tertiary_disk = ""
if not osUtils.check_path(instance_path):
if device["resizeImage"] > 0:
logger.debug('resizing image')
if not osUtils.create_thick_provision_instance(
image_base_path, device["name"],
device["resizeImage"]):
raise Exception(
"Could not resize image instance for image: " +
device["name"])
else:
if not osUtils.create_thin_provision_instance(
image_base_path, device["name"]):
raise Exception(
"Could not create image instance for image: " +
image_base_path)
if "type" in device["secondaryDiskParams"]:
secondary_disk = wistarUtils.create_disk_instance(
device, device["secondaryDiskParams"])
if "type" in device["tertiaryDiskParams"]:
tertiary_disk = wistarUtils.create_disk_instance(
device, device["tertiaryDiskParams"])
cloud_init_path = ''
if device["cloudInitSupport"]:
# grab the last interface
management_interface = device["managementInterface"]
# grab the prefix len from the management subnet which is in the form 192.168.122.0/24
if '/' in configuration.management_subnet:
management_prefix_len = configuration.management_subnet.split(
'/')[1]
else:
management_prefix_len = '24'
management_ip = device['ip'] + '/' + management_prefix_len
# domain_name, host_name, mgmt_ip, mgmt_interface
script_string = ""
script_param = ""
roles = list()
if 'roles' in device and type(device['roles']) is list:
roles = device['roles']
if device["configScriptId"] != 0:
logger.debug("Passing script data!")
script = osUtils.get_cloud_init_template(
device['configScriptId'])
script_param = device["configScriptParam"]
logger.debug("Creating cloud init path for linux image")
cloud_init_path = osUtils.create_cloud_init_img(
device["name"], device["label"], management_ip,
management_interface, device["password"], script,
script_param, roles)
logger.debug(cloud_init_path)
device_xml = render_to_string(
domain_xml_path + configuration_file, {
'device': device,
'instancePath': instance_path,
'vm_env': vm_env,
'cloud_init_path': cloud_init_path,
'secondary_disk_path': secondary_disk,
'tertiary_disk_path': tertiary_disk,
'use_ovs': is_ovs
})
logger.debug(device_xml)
libvirtUtils.define_domain_from_xml(device_xml)
if not domain_exists:
logger.debug("Reserving IP with dnsmasq")
management_mac = libvirtUtils.get_management_interface_mac_for_domain(
device["name"])
logger.debug('got management mac')
logger.debug(management_mac)
libvirtUtils.reserve_management_ip_for_mac(
management_mac, device["ip"], device["name"])
logger.debug('management ip is reserved for mac')
except Exception as ex:
logger.warn("Raising exception")
logger.error(ex)
logger.error(traceback.format_exc())
raise Exception(str(ex))
def manage_domain(request):
required_fields = set(['domainId', 'action', 'topologyId'])
if not required_fields.issubset(request.POST):
return render(request, 'ajax/ajaxError.html',
{'error': "Invalid Parameters in POST"})
domain_id = request.POST['domainId']
action = request.POST['action']
topology_id = request.POST["topologyId"]
if action == "start":
# force all networks to be up before we start a topology
# potential minor optimization here to only start networks attached to domain
networks = libvirtUtils.get_networks_for_topology(topology_id)
for network in networks:
if network["state"] != "running":
libvirtUtils.start_network(network["name"])
# prevent start up errors by missing ISO files - i.e cloud-init seed files
domain = libvirtUtils.get_domain_by_uuid(domain_id)
iso = libvirtUtils.get_iso_for_domain(domain.name())
# if we have an ISO file configured, and it doesn't actually exist
# just remove it completely
if iso is not None and not osUtils.check_path(iso):
logger.debug("Removing non-existent ISO from domain")
libvirtUtils.detach_iso_from_domain(domain.name())
# now we should be able to safely start the domain
if libvirtUtils.start_domain(domain_id):
return refresh_deployment_status(request)
else:
return render(request, 'ajax/ajaxError.html',
{'error': "Could not start domain!"})
elif action == "stop":
if libvirtUtils.stop_domain(domain_id):
return refresh_deployment_status(request)
else:
return render(request, 'ajax/ajaxError.html',
{'error': "Could not stop domain!"})
elif action == "suspend":
if libvirtUtils.suspend_domain(domain_id):
return refresh_deployment_status(request)
else:
return render(request, 'ajax/ajaxError.html',
{'error': "Could not suspend domain!"})
elif action == "undefine":
domain = libvirtUtils.get_domain_by_uuid(domain_id)
domain_name = domain.name()
source_file = libvirtUtils.get_image_for_domain(domain_id)
if libvirtUtils.undefine_domain(domain_id):
if source_file is not None:
osUtils.remove_instance(source_file)
osUtils.remove_cloud_init_seed_dir_for_domain(domain_name)
return refresh_deployment_status(request)
else:
return render(request, 'ajax/ajaxError.html',
{'error': "Could not stop domain!"})
else:
return render(request, 'ajax/ajaxError.html',
{'error': "Unknown Parameters in POST!"})
