def test_validate_hwe_kern_fails_with_old_release_and_newer_hwe_kern(self):
exception_raised = False
try:
validate_hwe_kernel(
None, 'hwe-v', 'amd64/generic', 'ubuntu', 'trusty')
except ValidationError as e:
self.assertEqual(
'trusty has no kernels available which meet' +
' min_hwe_kernel(hwe-v).', e.message)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_nongeneric_arch_and_kernel(self):
exception_raised = False
try:
validate_hwe_kernel(
'hwe-v', None, 'armfh/hardbank', 'ubuntu', 'trusty')
except ValidationError as e:
self.assertEqual(
'Subarchitecture(hardbank) must be generic when setting ' +
'hwe_kernel.', e.message)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_old_kernel_and_newer_release(self):
exception_raised = False
self.patch(BootResource.objects,
"get_usable_hwe_kernels").return_value = ("hwe-t", "hwe-v")
try:
validate_hwe_kernel("hwe-t", None, "amd64/generic", "ubuntu",
"vivid")
except ValidationError as e:
self.assertEqual("hwe-t is too old to use on ubuntu/vivid.",
e.message)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_old_kernel_and_newer_release(self):
exception_raised = False
self.patch(BootResource.objects,
'get_usable_hwe_kernels').return_value = ('hwe-t', 'hwe-v')
try:
validate_hwe_kernel('hwe-t', None, 'amd64/generic', 'ubuntu',
'vivid')
except ValidationError as e:
self.assertEqual('hwe-t is too old to use on ubuntu/vivid.',
e.message)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_no_avalible_kernels(self):
exception_raised = False
self.patch(BootResource.objects,
'get_usable_hwe_kernels').return_value = ('hwe-t', 'hwe-v')
try:
validate_hwe_kernel('hwe-t', 'hwe-v', 'amd64/generic', 'ubuntu',
'precise')
except ValidationError as e:
self.assertEqual(
'hwe_kernel(hwe-t) is older than min_hwe_kernel(hwe-v).',
e.message)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_nongeneric_arch_and_kernel(self):
exception_raised = False
try:
validate_hwe_kernel("hwe-v", None, "armfh/hardbank", "ubuntu",
"trusty")
except ValidationError as e:
self.assertEqual(
"Subarchitecture(hardbank) must be generic when setting " +
"hwe_kernel.",
e.message,
)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_missing_hwe_kernel(self):
exception_raised = False
self.patch(BootResource.objects,
'get_usable_hwe_kernels').return_value = ('hwe-t', 'hwe-u')
try:
validate_hwe_kernel('hwe-v', None, 'amd64/generic', 'ubuntu',
'trusty')
except ValidationError as e:
self.assertEqual(
'hwe-v is not available for ubuntu/trusty on amd64/generic.',
e.message)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kern_fails_with_old_release_and_newer_hwe_kern(self):
exception_raised = False
try:
validate_hwe_kernel(None, "hwe-v", "amd64/generic", "ubuntu",
"trusty")
except ValidationError as e:
self.assertEqual(
"trusty has no kernels available which meet" +
" min_hwe_kernel(hwe-v).",
e.message,
)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_no_avalible_kernels(self):
exception_raised = False
self.patch(BootResource.objects,
"get_usable_hwe_kernels").return_value = ("hwe-t", "hwe-v")
try:
validate_hwe_kernel("hwe-t", "hwe-v", "amd64/generic", "ubuntu",
"precise")
except ValidationError as e:
self.assertEqual(
"hwe_kernel(hwe-t) is older than min_hwe_kernel(hwe-v).",
e.message,
)
exception_raised = True
self.assertEqual(True, exception_raised)
def test_validate_hwe_kernel_fails_with_missing_hwe_kernel(self):
exception_raised = False
self.patch(BootResource.objects,
"get_usable_hwe_kernels").return_value = ("hwe-t", "hwe-u")
try:
validate_hwe_kernel("hwe-v", None, "amd64/generic", "ubuntu",
"trusty")
except ValidationError as e:
self.assertEqual(
"hwe-v is not available for ubuntu/trusty on amd64/generic.",
e.message,
)
exception_raised = True
self.assertEqual(True, exception_raised)
def execute(self, osystem=None, distro_series=None, hwe_kernel=None):
"""See `NodeAction.execute`."""
if self.node.owner is None:
with locks.node_acquire:
self.node.acquire(self.user, token=None)
if osystem and distro_series:
try:
self.node.osystem, self.node.distro_series = (
validate_osystem_and_distro_series(osystem, distro_series))
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
try:
self.node.hwe_kernel = validate_hwe_kernel(
hwe_kernel, self.node.min_hwe_kernel, self.node.architecture,
self.node.osystem, self.node.distro_series)
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
try:
get_curtin_config(self.node)
except Exception as e:
raise NodeActionError("Failed to retrieve curtin config: %s" % e)
try:
self.node.start(self.user)
except StaticIPAddressExhaustion:
raise NodeActionError(
"%s: Failed to start, static IP addresses are exhausted." %
self.node.hostname)
except RPC_EXCEPTIONS + (ExternalProcessError, ) as exception:
raise NodeActionError(exception)
def test_validate_hwe_kernel_set_kernel(self):
self.patch(
BootResource.objects,
'get_usable_hwe_kernels').return_value = ('hwe-t', 'hwe-v')
hwe_kernel = validate_hwe_kernel(
'hwe-v', None, 'amd64/generic', 'ubuntu', 'trusty')
self.assertEqual(hwe_kernel, 'hwe-v')
def test_validate_hwe_kernel_accepts_ga_kernel(self):
self.patch(
BootResource.objects,
'get_usable_hwe_kernels').return_value = ('ga-16.04',)
hwe_kernel = validate_hwe_kernel(
'ga-16.04', None, 'amd64/generic', 'ubuntu', 'xenial')
self.assertEqual(hwe_kernel, 'ga-16.04')
def test_validate_hwe_kernel_accepts_ga_kernel(self):
self.patch(
BootResource.objects, "get_usable_hwe_kernels"
).return_value = ("ga-16.04",)
hwe_kernel = validate_hwe_kernel(
"ga-16.04", None, "amd64/generic", "ubuntu", "xenial"
)
self.assertEqual(hwe_kernel, "ga-16.04")
def test_validate_hwe_kernel_set_kernel(self):
self.patch(
BootResource.objects, "get_usable_hwe_kernels"
).return_value = ("hwe-t", "hwe-v")
hwe_kernel = validate_hwe_kernel(
"hwe-v", None, "amd64/generic", "ubuntu", "trusty"
)
self.assertEqual(hwe_kernel, "hwe-v")
def test_validate_hwe_kern_always_sets_kern_with_commissionable_os(self):
self.patch(BootResource.objects,
'get_usable_hwe_kernels').return_value = ('hwe-t', 'hwe-v')
mock_get_config = self.patch(Config.objects, "get_config")
mock_get_config.return_value = 'trusty'
kernel = validate_hwe_kernel(None, 'hwe-v',
'%s/generic' % factory.make_name('arch'),
factory.make_name("osystem"),
factory.make_name("distro"))
self.assertThat(mock_get_config, MockAnyCall('commissioning_osystem'))
self.assertThat(mock_get_config,
MockAnyCall('commissioning_distro_series'))
self.assertEqual('hwe-v', kernel)
def get_boot_filenames(
arch,
subarch,
osystem,
series,
commissioning_osystem=undefined,
commissioning_distro_series=undefined,
):
"""Return the filenames of the kernel, initrd, and boot_dtb for the boot
resource."""
if subarch == "generic":
# MAAS doesn't store in the BootResource table what subarch is the
# generic subarch so lookup what the generic subarch maps to.
try:
boot_resource_subarch = validate_hwe_kernel(
subarch,
None,
"%s/%s" % (arch, subarch),
osystem,
series,
commissioning_osystem=commissioning_osystem,
commissioning_distro_series=commissioning_distro_series,
)
except ValidationError:
# It's possible that no kernel's exist at all for this arch,
# subarch, osystem, series combination. In that case just fallback
# to 'generic'.
boot_resource_subarch = "generic"
else:
boot_resource_subarch = subarch
try:
# Get the filename for the kernel, initrd, and boot_dtb the rack should
# use when booting.
boot_resource = BootResource.objects.get(
architecture="%s/%s" % (arch, boot_resource_subarch),
name="%s/%s" % (osystem, series),
)
boot_resource_set = boot_resource.get_latest_complete_set()
boot_resource_files = {
bfile.filetype: bfile.filename
for bfile in boot_resource_set.files.all()
}
except ObjectDoesNotExist:
# If a filename can not be found return None to allow the rack to
# figure out what todo.
return None, None, None
kernel = boot_resource_files.get(BOOT_RESOURCE_FILE_TYPE.BOOT_KERNEL)
initrd = boot_resource_files.get(BOOT_RESOURCE_FILE_TYPE.BOOT_INITRD)
boot_dtb = boot_resource_files.get(BOOT_RESOURCE_FILE_TYPE.BOOT_DTB)
return kernel, initrd, boot_dtb
def test_validate_hwe_kern_sets_hwe_kern_to_min_hwe_kern_for_edge(self):
# Regression test for LP:1654412
mock_get_usable_hwe_kernels = self.patch(BootResource.objects,
'get_usable_hwe_kernels')
mock_get_usable_hwe_kernels.return_value = ('hwe-16.04',
'hwe-16.04-edge')
arch = factory.make_name('arch')
kernel = validate_hwe_kernel(None, 'hwe-16.04-edge',
'%s/generic' % arch, 'ubuntu', 'xenial')
self.assertEquals('hwe-16.04-edge', kernel)
self.assertThat(mock_get_usable_hwe_kernels,
MockCalledOnceWith('ubuntu/xenial', arch, 'generic'))
def test_validate_hwe_kern_always_sets_kern_with_commissionable_os(self):
self.patch(BootResource.objects,
"get_usable_hwe_kernels").return_value = ("hwe-t", "hwe-v")
mock_get_config = self.patch(Config.objects, "get_config")
mock_get_config.return_value = "trusty"
kernel = validate_hwe_kernel(
None,
"hwe-v",
"%s/generic" % factory.make_name("arch"),
factory.make_name("osystem"),
factory.make_name("distro"),
)
self.assertThat(mock_get_config, MockAnyCall("commissioning_osystem"))
self.assertThat(mock_get_config,
MockAnyCall("commissioning_distro_series"))
self.assertEqual("hwe-v", kernel)
def execute(self, osystem=None, distro_series=None, hwe_kernel=None):
"""See `NodeAction.execute`."""
if self.node.owner is None:
with locks.node_acquire:
try:
self.node.acquire(self.user, token=None)
except ValidationError as e:
raise NodeActionError(e)
if osystem and distro_series:
try:
self.node.osystem, self.node.distro_series = (
validate_osystem_and_distro_series(osystem, distro_series))
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
try:
self.node.hwe_kernel = validate_hwe_kernel(
hwe_kernel, self.node.min_hwe_kernel, self.node.architecture,
self.node.osystem, self.node.distro_series)
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
request = self.request
if request is None:
# Being called from the websocket, just to ensure that the curtin
# configuration is valid. The request object does not need to be
# an actual request. 'SERVER_NAME' and 'SERVER_PORT' are required
# so `build_absolure_uri` can create an actual absolute URI.
request = HttpRequest()
request.META['SERVER_NAME'] = 'localhost'
request.META['SERVER_PORT'] = 5248
try:
get_curtin_config(request, self.node)
except Exception as e:
raise NodeActionError("Failed to retrieve curtin config: %s" % e)
try:
self.node.start(self.user)
except StaticIPAddressExhaustion:
raise NodeActionError(
"%s: Failed to start, static IP addresses are exhausted." %
self.node.hostname)
except RPC_EXCEPTIONS + (ExternalProcessError, ) as exception:
raise NodeActionError(exception)
def get_boot_filenames(arch, subarch, osystem, series):
"""Return the filenames of the kernel, initrd, and boot_dtb for the boot
resource."""
if subarch == 'generic':
# MAAS doesn't store in the BootResource table what subarch is the
# generic subarch so lookup what the generic subarch maps to.
try:
boot_resource_subarch = validate_hwe_kernel(
subarch, None, "%s/%s" % (arch, subarch), osystem, series)
except ValidationError:
# It's possible that no kernel's exist at all for this arch,
# subarch, osystem, series combination. In that case just fallback
# to 'generic'.
boot_resource_subarch = 'generic'
else:
boot_resource_subarch = subarch
try:
# Get the filename for the kernel, initrd, and boot_dtb the rack should
# use when booting.
boot_resource = BootResource.objects.get(
architecture="%s/%s" % (arch, boot_resource_subarch),
name="%s/%s" % (osystem, series)
)
boot_resource_set = boot_resource.get_latest_complete_set()
kernel = boot_resource_set.files.get(
filetype=BOOT_RESOURCE_FILE_TYPE.BOOT_KERNEL).filename
except ObjectDoesNotExist:
# If a filename can not be found return None to allow the rack to
# figure out what todo.
return None, None, None
try:
initrd = boot_resource_set.files.get(
filetype=BOOT_RESOURCE_FILE_TYPE.BOOT_INITRD).filename
except ObjectDoesNotExist:
# An initrd is not needed to boot if the kernel contains all driver
# support.
initrd = None
try:
boot_dtb = boot_resource_set.files.get(
filetype=BOOT_RESOURCE_FILE_TYPE.BOOT_DTB).filename
except ObjectDoesNotExist:
# Not all archs use boot_dtb so allow just this to fail
boot_dtb = None
return kernel, initrd, boot_dtb
def test_validate_hwe_kern_sets_hwe_kern_to_min_hwe_kern_for_edge(self):
# Regression test for LP:1654412
mock_get_usable_hwe_kernels = self.patch(BootResource.objects,
"get_usable_hwe_kernels")
mock_get_usable_hwe_kernels.return_value = (
"hwe-16.04",
"hwe-16.04-edge",
)
arch = factory.make_name("arch")
kernel = validate_hwe_kernel(None, "hwe-16.04-edge",
"%s/generic" % arch, "ubuntu", "xenial")
self.assertEquals("hwe-16.04-edge", kernel)
self.assertThat(
mock_get_usable_hwe_kernels,
MockCalledOnceWith("ubuntu/xenial", arch, "generic"),
)
def _execute(self,
osystem=None,
distro_series=None,
hwe_kernel=None,
install_kvm=False):
"""See `NodeAction.execute`."""
if install_kvm:
if not self.user.is_superuser:
raise NodeActionError(
"You must be a MAAS administrator to deploy a machine "
"as a MAAS-managed KVM Pod.")
if self.node.owner is None:
with locks.node_acquire:
try:
bridge_all = True if install_kvm else False
self.node.acquire(self.user,
token=None,
bridge_all=bridge_all)
except ValidationError as e:
raise NodeActionError(e)
if install_kvm:
try:
# KVM Pod installation should default to ubuntu/bionic, since
# that was the release it was tested on.
if osystem is None:
osystem = 'ubuntu'
if distro_series is None:
distro_series = 'bionic'
self.node.osystem, self.node.distro_series = (
validate_osystem_and_distro_series(osystem, distro_series))
self.node.install_kvm = True
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
elif osystem and distro_series:
try:
self.node.osystem, self.node.distro_series = (
validate_osystem_and_distro_series(osystem, distro_series))
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
try:
self.node.hwe_kernel = validate_hwe_kernel(
hwe_kernel, self.node.min_hwe_kernel, self.node.architecture,
self.node.osystem, self.node.distro_series)
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
request = self.request
if request is None:
# `compile_node_actions` is the path by which the node
# actions are instantiated. There are other places within the
# code that call compile_node_actions without a request object.
# In this event, and for future uses of these node actions without
# a request being passed in, we need to create one here.
# 'SERVER_NAME' and 'SERVER_PORT' are required so
# `build_absolure_uri` can create an actual absolute URI so that
# the curtin configuration is valid.
request = HttpRequest()
request.META['SERVER_NAME'] = 'localhost'
request.META['SERVER_PORT'] = 5248
try:
get_curtin_config(request, self.node)
except Exception as e:
raise NodeActionError("Failed to retrieve curtin config: %s" % e)
try:
self.node.start(self.user)
except StaticIPAddressExhaustion:
raise NodeActionError(
"%s: Failed to start, static IP addresses are exhausted." %
self.node.hostname)
except RPC_EXCEPTIONS + (ExternalProcessError, ) as exception:
raise NodeActionError(exception)
def get_config(
system_id, local_ip, remote_ip, arch=None, subarch=None, mac=None,
bios_boot_method=None):
"""Get the booting configration for the a machine.
Returns a structure suitable for returning in the response
for :py:class:`~provisioningserver.rpc.region.GetBootConfig`.
Raises BootConfigNoResponse when booting machine should fail to next file.
"""
rack_controller = RackController.objects.get(system_id=system_id)
region_ip = None
if remote_ip is not None:
region_ip = get_source_address(remote_ip)
machine = get_node_from_mac_string(mac)
# Fail with no response early so no extra work is performed.
if machine is None and arch is None and mac is not None:
# Request was pxelinux.cfg/01-<mac> for a machine MAAS does not know
# about. So attempt fall back to pxelinux.cfg/default-<arch>-<subarch>
# for arch detection.
raise BootConfigNoResponse()
if machine is not None:
# Update the last interface, last access cluster IP address, and
# the last used BIOS boot method. Only saving the fields that have
# changed on the machine.
update_fields = []
if (machine.boot_interface is None or
machine.boot_interface.mac_address != mac):
machine.boot_interface = PhysicalInterface.objects.get(
mac_address=mac)
update_fields.append("boot_interface")
if (machine.boot_cluster_ip is None or
machine.boot_cluster_ip != local_ip):
machine.boot_cluster_ip = local_ip
update_fields.append("boot_cluster_ip")
if machine.bios_boot_method != bios_boot_method:
machine.bios_boot_method = bios_boot_method
update_fields.append("bios_boot_method")
if len(update_fields) > 0:
machine.save(update_fields=update_fields)
# Update the VLAN of the boot interface to be the same VLAN for the
# interface on the rack controller that the machine communicated with,
# unless the VLAN is being relayed.
rack_interface = rack_controller.interface_set.filter(
ip_addresses__ip=local_ip).first()
if (rack_interface is not None and
machine.boot_interface.vlan != rack_interface.vlan):
# Rack controller and machine is not on the same VLAN, with DHCP
# relay this is possible. Lets ensure that the VLAN on the
# interface is setup to relay through the identified VLAN.
if not VLAN.objects.filter(
id=machine.boot_interface.vlan_id,
relay_vlan=rack_interface.vlan).exists():
# DHCP relay is not being performed for that VLAN. Set the VLAN
# to the VLAN of the rack controller.
machine.boot_interface.vlan = rack_interface.vlan
machine.boot_interface.save()
arch, subarch = machine.split_arch()
preseed_url = compose_preseed_url(
machine, rack_controller, default_region_ip=region_ip)
hostname = machine.hostname
domain = machine.domain.name
purpose = machine.get_boot_purpose()
# Log the request into the event log for that machine.
if (machine.status == NODE_STATUS.ENTERING_RESCUE_MODE and
purpose == 'commissioning'):
event_log_pxe_request(machine, 'rescue')
else:
event_log_pxe_request(machine, purpose)
# Get the correct operating system and series based on the purpose
# of the booting machine.
if purpose == "commissioning":
osystem = Config.objects.get_config('commissioning_osystem')
series = Config.objects.get_config('commissioning_distro_series')
else:
osystem = machine.get_osystem()
series = machine.get_distro_series()
if purpose == "xinstall" and osystem != "ubuntu":
# Use only the commissioning osystem and series, for operating
# systems other than Ubuntu. As Ubuntu supports HWE kernels,
# and needs to use that kernel to perform the installation.
osystem = Config.objects.get_config('commissioning_osystem')
series = Config.objects.get_config(
'commissioning_distro_series')
# Pre MAAS-1.9 the subarchitecture defined any kernel the machine
# needed to be able to boot. This could be a hardware enablement
# kernel(e.g hwe-t) or something like highbank. With MAAS-1.9 any
# hardware enablement kernel must be specifed in the hwe_kernel field,
# any other kernel, such as highbank, is still specifed as a
# subarchitecture. Since Ubuntu does not support architecture specific
# hardware enablement kernels(i.e a highbank hwe-t kernel on precise)
# we give precedence to any kernel defined in the subarchitecture field
if subarch == "generic" and machine.hwe_kernel:
subarch = machine.hwe_kernel
elif(subarch == "generic" and
purpose == "commissioning" and
machine.min_hwe_kernel):
try:
subarch = validate_hwe_kernel(
None, machine.min_hwe_kernel, machine.architecture,
osystem, series)
except ValidationError:
subarch = "no-such-kernel"
# We don't care if the kernel opts is from the global setting or a tag,
# just get the options
_, effective_kernel_opts = machine.get_effective_kernel_options()
# Add any extra options from a third party driver.
use_driver = Config.objects.get_config('enable_third_party_drivers')
if use_driver:
driver = get_third_party_driver(machine)
driver_kernel_opts = driver.get('kernel_opts', '')
combined_opts = ('%s %s' % (
'' if effective_kernel_opts is None else effective_kernel_opts,
driver_kernel_opts)).strip()
if len(combined_opts):
extra_kernel_opts = combined_opts
else:
extra_kernel_opts = None
else:
extra_kernel_opts = effective_kernel_opts
kparams = BootResource.objects.get_kparams_for_node(machine)
extra_kernel_opts = merge_kparams_with_extra(kparams,
extra_kernel_opts)
else:
purpose = "commissioning" # enlistment
preseed_url = compose_enlistment_preseed_url(
rack_controller, default_region_ip=region_ip)
hostname = 'maas-enlist'
domain = 'local'
osystem = Config.objects.get_config('commissioning_osystem')
series = Config.objects.get_config('commissioning_distro_series')
min_hwe_kernel = Config.objects.get_config('default_min_hwe_kernel')
# When no architecture is defined for the enlisting machine select
# the best boot resource for the operating system and series. If
# none exists fallback to the default architecture. LP #1181334
if arch is None:
resource = (
BootResource.objects.get_default_commissioning_resource(
osystem, series))
if resource is None:
arch = DEFAULT_ARCH
else:
arch, _ = resource.split_arch()
# The subarch defines what kernel is booted. With MAAS 2.1 this changed
# from hwe-<letter> to hwe-<version> or ga-<version>. Validation
# converts between the two formats to make sure a bootable subarch is
# selected.
if subarch is None:
min_hwe_kernel = validate_hwe_kernel(
None, min_hwe_kernel, '%s/generic' % arch, osystem, series)
else:
min_hwe_kernel = validate_hwe_kernel(
None, min_hwe_kernel, '%s/%s' % (arch, subarch), osystem,
series)
# If no hwe_kernel was found set the subarch to the default, 'generic.'
if min_hwe_kernel is None:
subarch = 'generic'
else:
subarch = min_hwe_kernel
# Global kernel options for enlistment.
extra_kernel_opts = Config.objects.get_config("kernel_opts")
# Set the final boot purpose.
if machine is None and arch == DEFAULT_ARCH:
# If the machine is enlisting and the arch is the default arch (i386),
# use the dedicated enlistment template which performs architecture
# detection.
boot_purpose = "enlist"
elif purpose == 'poweroff':
# In order to power the machine off, we need to get it booted in the
# commissioning environment and issue a `poweroff` command.
boot_purpose = 'commissioning'
else:
boot_purpose = purpose
# Get the service address to the region for that given rack controller.
server_host = get_maas_facing_server_host(
rack_controller=rack_controller, default_region_ip=region_ip)
kernel, initrd, boot_dtb = get_boot_filenames(
arch, subarch, osystem, series)
# Return the params to the rack controller. Include the system_id only
# if the machine was known.
params = {
"arch": arch,
"subarch": subarch,
"osystem": osystem,
"release": series,
"kernel": kernel,
"initrd": initrd,
"boot_dtb": boot_dtb,
"purpose": boot_purpose,
"hostname": hostname,
"domain": domain,
"preseed_url": preseed_url,
"fs_host": local_ip,
"log_host": server_host,
"extra_opts": '' if extra_kernel_opts is None else extra_kernel_opts,
# As of MAAS 2.4 only HTTP boot is supported. This ensures MAAS 2.3
# rack controllers use HTTP boot as well.
"http_boot": True,
}
if machine is not None:
params["system_id"] = machine.system_id
return params
def _execute(
self,
osystem=None,
distro_series=None,
hwe_kernel=None,
install_kvm=False,
user_data=None,
):
"""See `NodeAction.execute`."""
if install_kvm:
if not self.user.is_superuser:
raise NodeActionError(
"You must be a MAAS administrator to deploy a machine "
"as a MAAS-managed KVM Pod.")
if self.node.owner is None:
with locks.node_acquire:
try:
self.node.acquire(self.user)
except ValidationError as e:
raise NodeActionError(e)
if osystem and distro_series:
try:
(
self.node.osystem,
self.node.distro_series,
) = validate_osystem_and_distro_series(osystem, distro_series)
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
else:
configs = Config.objects.get_configs(
["default_osystem", "default_distro_series"])
self.node.osystem = configs["default_osystem"]
self.node.distro_series = configs["default_distro_series"]
self.node.save()
try:
self.node.hwe_kernel = validate_hwe_kernel(
hwe_kernel,
self.node.min_hwe_kernel,
self.node.architecture,
self.node.osystem,
self.node.distro_series,
)
self.node.save()
except ValidationError as e:
raise NodeActionError(e)
user_data = user_data.encode() if user_data else None
request = self.request
if request is None:
# `compile_node_actions` is the path by which the node
# actions are instantiated. There are other places within the
# code that call compile_node_actions without a request object.
# In this event, and for future uses of these node actions without
# a request being passed in, we need to create one here.
# 'SERVER_NAME' and 'SERVER_PORT' are required so
# `build_absolure_uri` can create an actual absolute URI so that
# the curtin configuration is valid.
request = HttpRequest()
request.META["SERVER_NAME"] = "localhost"
request.META["SERVER_PORT"] = 5248
try:
get_curtin_config(request, self.node)
except Exception as e:
raise NodeActionError("Failed to retrieve curtin config: %s" % e)
try:
self.node.start(self.user,
user_data=user_data,
install_kvm=install_kvm)
except StaticIPAddressExhaustion:
raise NodeActionError(
"%s: Failed to start, static IP addresses are exhausted." %
self.node.hostname)
except IPAddressCheckFailed:
raise NodeActionError(
f"{self.node.hostname}: Failed to start, IP addresses check failed."
)
except RPC_EXCEPTIONS + (ExternalProcessError, ) as exception:
raise NodeActionError(exception)
def get_config(
system_id, local_ip, remote_ip, arch=None, subarch=None, mac=None,
bios_boot_method=None):
"""Get the booting configration for the a machine.
Returns a structure suitable for returning in the response
for :py:class:`~provisioningserver.rpc.region.GetBootConfig`.
Raises BootConfigNoResponse when booting machine should fail to next file.
"""
rack_controller = RackController.objects.get(system_id=system_id)
region_ip = None
if remote_ip is not None:
region_ip = get_source_address(remote_ip)
machine = get_node_from_mac_string(mac)
# Get the service address to the region for that given rack controller.
server_host = get_maas_facing_server_host(
rack_controller=rack_controller, default_region_ip=region_ip)
# Fail with no response early so no extra work is performed.
if machine is None and arch is None and mac is not None:
# Request was pxelinux.cfg/01-<mac> for a machine MAAS does not know
# about. So attempt fall back to pxelinux.cfg/default-<arch>-<subarch>
# for arch detection.
raise BootConfigNoResponse()
configs = Config.objects.get_configs([
'commissioning_osystem',
'commissioning_distro_series',
'enable_third_party_drivers',
'default_min_hwe_kernel',
'default_osystem',
'default_distro_series',
'kernel_opts',
'use_rack_proxy',
'maas_internal_domain',
])
if machine is not None:
# Update the last interface, last access cluster IP address, and
# the last used BIOS boot method.
if (machine.boot_interface is None or
machine.boot_interface.mac_address != mac):
machine.boot_interface = PhysicalInterface.objects.get(
mac_address=mac)
if (machine.boot_cluster_ip is None or
machine.boot_cluster_ip != local_ip):
machine.boot_cluster_ip = local_ip
if machine.bios_boot_method != bios_boot_method:
machine.bios_boot_method = bios_boot_method
# Reset the machine's status_expires whenever the boot_config is called
# on a known machine. This allows a machine to take up to the maximum
# timeout status to POST.
machine.reset_status_expires()
# Does nothing if the machine hasn't changed.
machine.save()
# Update the VLAN of the boot interface to be the same VLAN for the
# interface on the rack controller that the machine communicated with,
# unless the VLAN is being relayed.
rack_interface = rack_controller.interface_set.filter(
ip_addresses__ip=local_ip).select_related('vlan').first()
if (rack_interface is not None and
machine.boot_interface.vlan_id != rack_interface.vlan_id):
# Rack controller and machine is not on the same VLAN, with DHCP
# relay this is possible. Lets ensure that the VLAN on the
# interface is setup to relay through the identified VLAN.
if not VLAN.objects.filter(
id=machine.boot_interface.vlan_id,
relay_vlan=rack_interface.vlan_id).exists():
# DHCP relay is not being performed for that VLAN. Set the VLAN
# to the VLAN of the rack controller.
machine.boot_interface.vlan = rack_interface.vlan
machine.boot_interface.save()
arch, subarch = machine.split_arch()
if configs['use_rack_proxy']:
preseed_url = compose_preseed_url(
machine, base_url=get_base_url_for_local_ip(
local_ip, configs['maas_internal_domain']))
else:
preseed_url = compose_preseed_url(
machine, base_url=rack_controller.url,
default_region_ip=region_ip)
hostname = machine.hostname
domain = machine.domain.name
purpose = machine.get_boot_purpose()
# Early out if the machine is booting local.
if purpose == 'local':
return {
"system_id": machine.system_id,
"arch": arch,
"subarch": subarch,
"osystem": machine.osystem,
"release": machine.distro_series,
"kernel": '',
"initrd": '',
"boot_dtb": '',
"purpose": purpose,
"hostname": hostname,
"domain": domain,
"preseed_url": preseed_url,
"fs_host": local_ip,
"log_host": server_host,
"extra_opts": '',
"http_boot": True,
}
# Log the request into the event log for that machine.
if (machine.status in [
NODE_STATUS.ENTERING_RESCUE_MODE,
NODE_STATUS.RESCUE_MODE] and purpose == 'commissioning'):
event_log_pxe_request(machine, 'rescue')
else:
event_log_pxe_request(machine, purpose)
osystem, series, subarch = get_boot_config_for_machine(
machine, configs, purpose)
# We don't care if the kernel opts is from the global setting or a tag,
# just get the options
_, effective_kernel_opts = machine.get_effective_kernel_options(
default_kernel_opts=configs['kernel_opts'])
# Add any extra options from a third party driver.
use_driver = configs['enable_third_party_drivers']
if use_driver:
driver = get_third_party_driver(machine)
driver_kernel_opts = driver.get('kernel_opts', '')
combined_opts = ('%s %s' % (
'' if effective_kernel_opts is None else effective_kernel_opts,
driver_kernel_opts)).strip()
if len(combined_opts):
extra_kernel_opts = combined_opts
else:
extra_kernel_opts = None
else:
extra_kernel_opts = effective_kernel_opts
kparams = BootResource.objects.get_kparams_for_node(
machine, default_osystem=configs['default_osystem'],
default_distro_series=configs['default_distro_series'])
extra_kernel_opts = merge_kparams_with_extra(kparams,
extra_kernel_opts)
else:
purpose = "commissioning" # enlistment
if configs['use_rack_proxy']:
preseed_url = compose_enlistment_preseed_url(
base_url=get_base_url_for_local_ip(
local_ip, configs['maas_internal_domain']))
else:
preseed_url = compose_enlistment_preseed_url(
rack_controller=rack_controller, default_region_ip=region_ip)
hostname = 'maas-enlist'
domain = 'local'
osystem = configs['commissioning_osystem']
series = configs['commissioning_distro_series']
min_hwe_kernel = configs['default_min_hwe_kernel']
# When no architecture is defined for the enlisting machine select
# the best boot resource for the operating system and series. If
# none exists fallback to the default architecture. LP #1181334
if arch is None:
resource = (
BootResource.objects.get_default_commissioning_resource(
osystem, series))
if resource is None:
arch = DEFAULT_ARCH
else:
arch, _ = resource.split_arch()
# The subarch defines what kernel is booted. With MAAS 2.1 this changed
# from hwe-<letter> to hwe-<version> or ga-<version>. Validation
# converts between the two formats to make sure a bootable subarch is
# selected.
if subarch is None:
min_hwe_kernel = validate_hwe_kernel(
None, min_hwe_kernel, '%s/generic' % arch, osystem, series)
else:
min_hwe_kernel = validate_hwe_kernel(
None, min_hwe_kernel, '%s/%s' % (arch, subarch), osystem,
series)
# If no hwe_kernel was found set the subarch to the default, 'generic.'
if min_hwe_kernel is None:
subarch = 'generic'
else:
subarch = min_hwe_kernel
# Global kernel options for enlistment.
extra_kernel_opts = configs["kernel_opts"]
# Set the final boot purpose.
if machine is None and arch == DEFAULT_ARCH:
# If the machine is enlisting and the arch is the default arch (i386),
# use the dedicated enlistment template which performs architecture
# detection.
boot_purpose = "enlist"
elif purpose == 'poweroff':
# In order to power the machine off, we need to get it booted in the
# commissioning environment and issue a `poweroff` command.
boot_purpose = 'commissioning'
else:
boot_purpose = purpose
kernel, initrd, boot_dtb = get_boot_filenames(
arch, subarch, osystem, series,
commissioning_osystem=configs['commissioning_osystem'],
commissioning_distro_series=configs['commissioning_distro_series'])
# Return the params to the rack controller. Include the system_id only
# if the machine was known.
params = {
"arch": arch,
"subarch": subarch,
"osystem": osystem,
"release": series,
"kernel": kernel,
"initrd": initrd,
"boot_dtb": boot_dtb,
"purpose": boot_purpose,
"hostname": hostname,
"domain": domain,
"preseed_url": preseed_url,
"fs_host": local_ip,
"log_host": server_host,
"extra_opts": '' if extra_kernel_opts is None else extra_kernel_opts,
# As of MAAS 2.4 only HTTP boot is supported. This ensures MAAS 2.3
# rack controllers use HTTP boot as well.
"http_boot": True,
}
if machine is not None:
params["system_id"] = machine.system_id
return params
def get_boot_config_for_machine(machine, configs, purpose):
"""Get the correct operating system and series based on the purpose
of the booting machine.
"""
_, subarch = machine.split_arch()
precise = False
if purpose == "commissioning":
# LP: #1768321 - Fix a regression introduced by, and really fix
# the issue that LP: #1730525 was meant to fix. This ensures that
# when DISK_ERASING, or when ENTERING_RESCUE_MODE on a deployed
# machine it uses the OS from the deployed system for the
# ephemeral environment.
if machine.osystem == "ubuntu" and (
machine.status == NODE_STATUS.DISK_ERASING or (
machine.status in [
NODE_STATUS.ENTERING_RESCUE_MODE,
NODE_STATUS.RESCUE_MODE,
] and machine.previous_status == NODE_STATUS.DEPLOYED)):
osystem = machine.get_osystem(default=configs['default_osystem'])
series = machine.get_distro_series(
default=configs['default_distro_series'])
else:
osystem = configs['commissioning_osystem']
series = configs['commissioning_distro_series']
else:
osystem = machine.get_osystem(default=configs['default_osystem'])
series = machine.get_distro_series(
default=configs['default_distro_series'])
# XXX: roaksoax LP: #1739761 - Since the switch to squashfs (and
# drop of iscsi), precise is no longer deployable. To address a
# squashfs image is made available allowing it to be deployed in
# the commissioning ephemeral environment.
precise = True if series == "precise" else False
if purpose == "xinstall" and (osystem != "ubuntu" or precise):
# Use only the commissioning osystem and series, for operating
# systems other than Ubuntu. As Ubuntu supports HWE kernels,
# and needs to use that kernel to perform the installation.
osystem = configs['commissioning_osystem']
series = configs['commissioning_distro_series']
# Pre MAAS-1.9 the subarchitecture defined any kernel the machine
# needed to be able to boot. This could be a hardware enablement
# kernel(e.g hwe-t) or something like highbank. With MAAS-1.9 any
# hardware enablement kernel must be specifed in the hwe_kernel field,
# any other kernel, such as highbank, is still specifed as a
# subarchitecture. Since Ubuntu does not support architecture specific
# hardware enablement kernels(i.e a highbank hwe-t kernel on precise)
# we give precedence to any kernel defined in the subarchitecture field
# If the machine is deployed, hardcode the use of the Minimum HWE Kernel
# This is to ensure that machines can always do testing regardless of
# what they were deployed with, using the defaults from the settings
testing_from_deployed = (
machine.previous_status == NODE_STATUS.DEPLOYED and
machine.status == NODE_STATUS.TESTING and purpose == "commissioning")
if testing_from_deployed:
subarch = (subarch if not configs['default_min_hwe_kernel']
else configs['default_min_hwe_kernel'])
# XXX: roaksoax LP: #1739761 - Do not override the subarch (used for
# the deployment ephemeral env) when deploying precise, provided that
# it uses the commissioning distro_series and hwe kernels are not
# needed.
elif subarch == "generic" and machine.hwe_kernel and not precise:
subarch = machine.hwe_kernel
elif(subarch == "generic" and
purpose == "commissioning" and
machine.min_hwe_kernel):
try:
subarch = validate_hwe_kernel(
None, machine.min_hwe_kernel, machine.architecture,
osystem, series)
except ValidationError:
subarch = "no-such-kernel"
return osystem, series, subarch
def get_config(
system_id,
local_ip,
remote_ip,
arch=None,
subarch=None,
mac=None,
hardware_uuid=None,
bios_boot_method=None,
):
"""Get the booting configration for a machine.
Returns a structure suitable for returning in the response
for :py:class:`~provisioningserver.rpc.region.GetBootConfig`.
Raises BootConfigNoResponse when booting machine should fail to next file.
"""
rack_controller = RackController.objects.get(system_id=system_id)
region_ip = None
if remote_ip is not None:
region_ip = get_source_address(remote_ip)
machine = get_node_from_mac_or_hardware_uuid(mac, hardware_uuid)
# Fail with no response early so no extra work is performed.
if machine is None and arch is None and (mac or hardware_uuid):
# PXELinux requests boot configuration in the following order:
# 1. pxelinux.cfg/<hardware uuid>
# 2. pxelinux.cfg/01-<mac>
# 3. pxelinux.cfg/default-<arch>-<subarch>
# If mac and/or hardware_uuid was given but no Node was found fail the
# request so PXELinux will move onto the next request.
raise BootConfigNoResponse()
# Get all required configuration objects in a single query.
configs = Config.objects.get_configs([
"commissioning_osystem",
"commissioning_distro_series",
"enable_third_party_drivers",
"default_min_hwe_kernel",
"default_osystem",
"default_distro_series",
"kernel_opts",
"use_rack_proxy",
"maas_internal_domain",
"remote_syslog",
"maas_syslog_port",
])
# Compute the syslog server.
log_host, log_port = (
local_ip,
(configs["maas_syslog_port"]
if configs["maas_syslog_port"] else RSYSLOG_PORT),
)
if configs["remote_syslog"]:
log_host, log_port = splithost(configs["remote_syslog"])
if log_port is None:
log_port = 514 # Fallback to default UDP syslog port.
if machine is not None:
# Update the last interface, last access cluster IP address, and
# the last used BIOS boot method.
if machine.boot_cluster_ip != local_ip:
machine.boot_cluster_ip = local_ip
if machine.bios_boot_method != bios_boot_method:
machine.bios_boot_method = bios_boot_method
try:
machine.boot_interface = machine.interface_set.get(
type=INTERFACE_TYPE.PHYSICAL, mac_address=mac)
except ObjectDoesNotExist:
# MAC is unknown or wasn't sent. Determine the boot_interface using
# the boot_cluster_ip.
subnet = Subnet.objects.get_best_subnet_for_ip(local_ip)
boot_vlan = getattr(machine.boot_interface, "vlan", None)
if subnet and subnet.vlan != boot_vlan:
# This might choose the wrong interface, but we don't
# have enough information to decide which interface is
# the boot one.
machine.boot_interface = machine.interface_set.filter(
vlan=subnet.vlan).first()
else:
# Update the VLAN of the boot interface to be the same VLAN for the
# interface on the rack controller that the machine communicated
# with, unless the VLAN is being relayed.
rack_interface = (rack_controller.interface_set.filter(
ip_addresses__ip=local_ip).select_related("vlan").first())
if (rack_interface is not None and
machine.boot_interface.vlan_id != rack_interface.vlan_id):
# Rack controller and machine is not on the same VLAN, with
# DHCP relay this is possible. Lets ensure that the VLAN on the
# interface is setup to relay through the identified VLAN.
if not VLAN.objects.filter(
id=machine.boot_interface.vlan_id,
relay_vlan=rack_interface.vlan_id,
).exists():
# DHCP relay is not being performed for that VLAN. Set the
# VLAN to the VLAN of the rack controller.
machine.boot_interface.vlan = rack_interface.vlan
machine.boot_interface.save()
# Reset the machine's status_expires whenever the boot_config is called
# on a known machine. This allows a machine to take up to the maximum
# timeout status to POST.
machine.reset_status_expires()
# Does nothing if the machine hasn't changed.
machine.save()
arch, subarch = machine.split_arch()
if configs["use_rack_proxy"]:
preseed_url = compose_preseed_url(
machine,
base_url=get_base_url_for_local_ip(
local_ip, configs["maas_internal_domain"]),
)
else:
preseed_url = compose_preseed_url(
machine,
base_url=rack_controller.url,
default_region_ip=region_ip,
)
hostname = machine.hostname
domain = machine.domain.name
purpose = machine.get_boot_purpose()
# Ephemeral deployments will have 'local' boot
# purpose on power cycles. Set purpose back to
# 'xinstall' so that the system can be re-deployed.
if purpose == "local" and machine.ephemeral_deployment:
purpose = "xinstall"
# Early out if the machine is booting local.
if purpose == "local":
if machine.is_device:
# Log that we are setting to local boot for a device.
maaslog.warning(
"Device %s with MAC address %s is PXE booting; "
"instructing the device to boot locally." %
(machine.hostname, mac))
# Set the purpose to 'local-device' so we can log a message
# on the rack.
purpose = "local-device"
return {
"system_id": machine.system_id,
"arch": arch,
"subarch": subarch,
"osystem": machine.osystem,
"release": machine.distro_series,
"kernel": "",
"initrd": "",
"boot_dtb": "",
"purpose": purpose,
"hostname": hostname,
"domain": domain,
"preseed_url": preseed_url,
"fs_host": local_ip,
"log_host": log_host,
"log_port": log_port,
"extra_opts": "",
"http_boot": True,
}
# Log the request into the event log for that machine.
if (machine.status
in [NODE_STATUS.ENTERING_RESCUE_MODE, NODE_STATUS.RESCUE_MODE]
and purpose == "commissioning"):
event_log_pxe_request(machine, "rescue")
else:
event_log_pxe_request(machine, purpose)
osystem, series, subarch = get_boot_config_for_machine(
machine, configs, purpose)
# We don't care if the kernel opts is from the global setting or a tag,
# just get the options
_, effective_kernel_opts = machine.get_effective_kernel_options(
default_kernel_opts=configs["kernel_opts"])
# Add any extra options from a third party driver.
use_driver = configs["enable_third_party_drivers"]
if use_driver:
driver = get_third_party_driver(machine)
driver_kernel_opts = driver.get("kernel_opts", "")
combined_opts = ("%s %s" % (
"" if effective_kernel_opts is None else effective_kernel_opts,
driver_kernel_opts,
)).strip()
if len(combined_opts):
extra_kernel_opts = combined_opts
else:
extra_kernel_opts = None
else:
extra_kernel_opts = effective_kernel_opts
kparams = BootResource.objects.get_kparams_for_node(
machine,
default_osystem=configs["default_osystem"],
default_distro_series=configs["default_distro_series"],
)
extra_kernel_opts = merge_kparams_with_extra(kparams,
extra_kernel_opts)
else:
purpose = "commissioning" # enlistment
if configs["use_rack_proxy"]:
preseed_url = compose_enlistment_preseed_url(
base_url=get_base_url_for_local_ip(
local_ip, configs["maas_internal_domain"]))
else:
preseed_url = compose_enlistment_preseed_url(
rack_controller=rack_controller, default_region_ip=region_ip)
hostname = "maas-enlist"
domain = "local"
osystem = configs["commissioning_osystem"]
series = configs["commissioning_distro_series"]
min_hwe_kernel = configs["default_min_hwe_kernel"]
# When no architecture is defined for the enlisting machine select
# the best boot resource for the operating system and series. If
# none exists fallback to the default architecture. LP #1181334
if arch is None:
resource = BootResource.objects.get_default_commissioning_resource(
osystem, series)
if resource is None:
arch = DEFAULT_ARCH
else:
arch, _ = resource.split_arch()
# The subarch defines what kernel is booted. With MAAS 2.1 this changed
# from hwe-<letter> to hwe-<version> or ga-<version>. Validation
# converts between the two formats to make sure a bootable subarch is
# selected.
if subarch is None:
min_hwe_kernel = validate_hwe_kernel(None, min_hwe_kernel,
"%s/generic" % arch, osystem,
series)
else:
min_hwe_kernel = validate_hwe_kernel(
None,
min_hwe_kernel,
"%s/%s" % (arch, subarch),
osystem,
series,
)
# If no hwe_kernel was found set the subarch to the default, 'generic.'
if min_hwe_kernel is None:
subarch = "generic"
else:
subarch = min_hwe_kernel
# Global kernel options for enlistment.
extra_kernel_opts = configs["kernel_opts"]
boot_purpose = get_final_boot_purpose(machine, arch, purpose)
kernel, initrd, boot_dtb = get_boot_filenames(
arch,
subarch,
osystem,
series,
commissioning_osystem=configs["commissioning_osystem"],
commissioning_distro_series=configs["commissioning_distro_series"],
)
# Return the params to the rack controller. Include the system_id only
# if the machine was known.
params = {
"arch": arch,
"subarch": subarch,
"osystem": osystem,
"release": series,
"kernel": kernel,
"initrd": initrd,
"boot_dtb": boot_dtb,
"purpose": boot_purpose,
"hostname": hostname,
"domain": domain,
"preseed_url": preseed_url,
"fs_host": local_ip,
"log_host": log_host,
"log_port": log_port,
"extra_opts": "" if extra_kernel_opts is None else extra_kernel_opts,
# As of MAAS 2.4 only HTTP boot is supported. This ensures MAAS 2.3
# rack controllers use HTTP boot as well.
"http_boot": True,
}
if machine is not None:
params["system_id"] = machine.system_id
return params
def get_boot_config_for_machine(machine, configs):
"""Get the correct operating system and series based on the purpose
of the booting machine.
"""
purpose = machine.get_boot_purpose()
_, subarch = machine.split_arch()
precise = False
if purpose == "commissioning":
osystem = configs['commissioning_osystem']
series = configs['commissioning_distro_series']
else:
osystem = machine.get_osystem(default=configs['default_osystem'])
series = machine.get_distro_series(
default=configs['default_distro_series'])
# XXX: roaksoax LP: #1739761 - Since the switch to squashfs (and
# drop of iscsi), precise is no longer deployable. To address a
# squashfs image is made available allowing it to be deployed in
# the commissioning ephemeral environment.
precise = True if series == "precise" else False
if purpose == "xinstall" and (osystem != "ubuntu" or precise):
# Use only the commissioning osystem and series, for operating
# systems other than Ubuntu. As Ubuntu supports HWE kernels,
# and needs to use that kernel to perform the installation.
osystem = configs['commissioning_osystem']
series = configs['commissioning_distro_series']
# Pre MAAS-1.9 the subarchitecture defined any kernel the machine
# needed to be able to boot. This could be a hardware enablement
# kernel(e.g hwe-t) or something like highbank. With MAAS-1.9 any
# hardware enablement kernel must be specifed in the hwe_kernel field,
# any other kernel, such as highbank, is still specifed as a
# subarchitecture. Since Ubuntu does not support architecture specific
# hardware enablement kernels(i.e a highbank hwe-t kernel on precise)
# we give precedence to any kernel defined in the subarchitecture field
# XXX: roaksoax LP: #1739761 - Do not override the subarch (used for
# the deployment ephemeral env) when deploying precise, provided that
# it uses the commissioning distro_series and hwe kernels are not
# needed.
kernel_validated = False
if subarch == "generic" and machine.hwe_kernel and not precise:
subarch = machine.hwe_kernel
elif (subarch == "generic" and purpose == "commissioning"
and machine.min_hwe_kernel):
try:
subarch = validate_hwe_kernel(None, machine.min_hwe_kernel,
machine.architecture, osystem,
series)
except ValidationError:
subarch = "no-such-kernel"
kernel_validated = True
# LP:1730525 - If entering the ephemeral environment from a deployed
# OS subarch will be machine.hwe_kernel. If a newer version of Ubuntu
# was deployed then the commissioning OS hwe_kernel will not be
# available. Use the hwe kernel instead of the ga.
if purpose == "commissioning" and not kernel_validated:
try:
subarch = validate_hwe_kernel(subarch, machine.min_hwe_kernel,
machine.architecture, osystem,
series)
except ValidationError:
try:
# Get the default kernel.
subarch = validate_hwe_kernel(None, machine.min_hwe_kernel,
machine.architecture, osystem,
series)
except ValidationError:
subarch = "no-such-kernel"
else:
# Switch to hwe-
subarch = subarch.replace('ga-', 'hwe-')
return osystem, series, subarch
