def test_preseed_context_cluster_host(self):
# The cluster_host context variable is derived from the nodegroup.
release = factory.getRandomString()
nodegroup = factory.make_node_group(maas_url=factory.getRandomString())
context = get_preseed_context(release, nodegroup)
self.assertIsNotNone(context["cluster_host"])
self.assertEqual(nodegroup.get_managed_interface().ip,
context["cluster_host"])
def test_get_preseed_context_contains_keys(self):
release = factory.getRandomString()
nodegroup = factory.make_node_group(maas_url=factory.getRandomString())
context = get_preseed_context(release, nodegroup)
self.assertItemsEqual([
'release', 'metadata_enlist_url', 'server_host', 'server_url',
'cluster_host', 'main_archive_hostname', 'main_archive_directory',
'ports_archive_hostname', 'ports_archive_directory', 'http_proxy'
], context)
def test_get_preseed_context_contains_keys(self):
release = factory.getRandomString()
nodegroup = factory.make_node_group(maas_url=factory.getRandomString())
context = get_preseed_context(release, nodegroup)
self.assertItemsEqual(
['release', 'metadata_enlist_url', 'server_host', 'server_url',
'main_archive_hostname', 'main_archive_directory',
'ports_archive_hostname', 'ports_archive_directory',
'http_proxy',
],
context)
def test_preseed_context_cluster_host_if_unmanaged(self):
# If the nodegroup has no managed interface recorded, the cluster_host
# context variable is still present and derived from the nodegroup.
release = factory.getRandomString()
nodegroup = factory.make_node_group(maas_url=factory.getRandomString())
for interface in nodegroup.nodegroupinterface_set.all():
interface.management = NODEGROUPINTERFACE_MANAGEMENT.UNMANAGED
interface.save()
context = get_preseed_context(release, nodegroup)
self.assertIsNotNone(context["cluster_host"])
self.assertEqual(nodegroup.get_any_interface().ip,
context["cluster_host"])
def generate_user_data(nodegroup=None):
"""Produce the main commissioning script.
The main template file contains references to so-called ``snippets''
which are read in here, and substituted. In addition, the regular
preseed context variables are available (such as 'http_proxy').
The final result is a MIME multipart message that consists of a
'cloud-config' part and an 'x-shellscript' part. This allows maximum
flexibility with cloud-init as we read in a template
'user_data_config.template' to set cloud-init configs before the script
is run.
:rtype: `bytes`
"""
commissioning_dir = get_userdata_template_dir()
userdata_template_file = os.path.join(commissioning_dir,
'user_data.template')
config_template_file = os.path.join(commissioning_dir,
'user_data_config.template')
userdata_template = tempita.Template.from_filename(userdata_template_file,
encoding=ENCODING)
config_template = tempita.Template.from_filename(config_template_file,
encoding=ENCODING)
# The preseed context is a dict containing various configs that the
# templates can use.
preseed_context = get_preseed_context(nodegroup=nodegroup)
# Render the snippets in the main template.
snippets = get_snippet_context(encoding=ENCODING)
snippets.update(preseed_context)
userdata = userdata_template.substitute(snippets).encode(ENCODING)
# Render the config.
config = config_template.substitute(preseed_context)
# Create a MIME multipart message from the config and the userdata.
config_part = MIMEText(config, 'cloud-config', ENCODING)
config_part.add_header('Content-Disposition',
'attachment; filename="config"')
data_part = MIMEText(userdata, 'x-shellscript', ENCODING)
data_part.add_header('Content-Disposition',
'attachment; filename="user_data.sh"')
combined = MIMEMultipart()
combined.attach(config_part)
combined.attach(data_part)
return combined.as_string()
def generate_user_data(node, userdata_template_file, extra_context=None):
"""Produce a user_data script for use by an ephemeral environment.
The main template file contains references to so-called ``snippets''
which are read in here, and substituted. In addition, the regular
preseed context variables are available (such as 'http_proxy').
The final result is a MIME multipart message that consists of a
'cloud-config' part and an 'x-shellscript' part. This allows maximum
flexibility with cloud-init as we read in a template
'user_data_config.template' to set cloud-init configs before the script
is run.
:rtype: `bytes`
"""
# Avoid circular dependencies.
from maasserver.preseed import get_preseed_context
userdata_template = tempita.Template.from_filename(
userdata_template_file, encoding=ENCODING)
# The preseed context is a dict containing various configs that the
# templates can use.
preseed_context = get_preseed_context(
rack_controller=node.get_boot_rack_controller())
preseed_context['node'] = node
# Render the snippets in the main template.
snippets = get_snippet_context(encoding=ENCODING)
snippets.update(preseed_context)
if extra_context is not None:
snippets.update(extra_context)
userdata = userdata_template.substitute(snippets).encode(ENCODING)
data_part = MIMEText(userdata, 'x-shellscript', ENCODING)
data_part.add_header(
'Content-Disposition', 'attachment; filename="user_data.sh"')
combined = MIMEMultipart()
combined.attach(data_part)
return combined.as_bytes()
def test_get_preseed_context_archive_refs(self):
# urlparse lowercases the hostnames. That should not have any
# impact but for testing, create lower-case hostnames.
main_archive = make_url('main_archive')
ports_archive = make_url('ports_archive')
Config.objects.set_config('main_archive', main_archive)
Config.objects.set_config('ports_archive', ports_archive)
nodegroup = factory.make_node_group(maas_url=factory.getRandomString())
context = get_preseed_context(factory.make_node(), nodegroup)
parsed_main_archive = urlparse(main_archive)
parsed_ports_archive = urlparse(ports_archive)
self.assertEqual((
parsed_main_archive.hostname,
parsed_main_archive.path,
parsed_ports_archive.hostname,
parsed_ports_archive.path,
), (
context['main_archive_hostname'],
context['main_archive_directory'],
context['ports_archive_hostname'],
context['ports_archive_directory'],
))
def test_get_preseed_context_archive_refs(self):
# urlparse lowercases the hostnames. That should not have any
# impact but for testing, create lower-case hostnames.
main_archive = make_url('main_archive')
ports_archive = make_url('ports_archive')
Config.objects.set_config('main_archive', main_archive)
Config.objects.set_config('ports_archive', ports_archive)
nodegroup = factory.make_node_group(maas_url=factory.getRandomString())
context = get_preseed_context(factory.make_node(), nodegroup)
parsed_main_archive = urlparse(main_archive)
parsed_ports_archive = urlparse(ports_archive)
self.assertEqual(
(
parsed_main_archive.hostname,
parsed_main_archive.path,
parsed_ports_archive.hostname,
parsed_ports_archive.path,
),
(
context['main_archive_hostname'],
context['main_archive_directory'],
context['ports_archive_hostname'],
context['ports_archive_directory'],
))
def test_preseed_context_null_cluster_host_if_does_not_exist(self):
# If there's no nodegroup, the cluster_host context variable is
# present, but None.
release = factory.getRandomString()
context = get_preseed_context(release)
self.assertIsNone(context["cluster_host"])