class TestProfile(profile_base.Profile):
CONTEXT = 'context'
properties_schema = {
'INT': schema.Integer('int property', default=0),
'STR': schema.String('string property', default='a string'),
'MAP': schema.Map(
'map property',
schema={
'KEY1': schema.Integer('key1'),
'KEY2': schema.String('key2')
}
),
'LIST': schema.List(
'list property',
schema=schema.String('list item'),
),
}
OPERATIONS = {}
def __init__(self, name, spec, **kwargs):
super(TestProfile, self).__init__(name, spec, **kwargs)
def do_create(self):
return {}
def do_delete(self, id):
return True
def do_update(self):
return {}
def do_check(self, id):
return True
def test_schema_list_schema(self):
d = {
'type': 'List',
'description': 'A list',
'schema': {
'*': {
'type':
'String',
'description':
'A string',
'default':
'wibble',
'required':
True,
'updatable':
False,
'constraints': [{
'constraint': ['foo', 'bar'],
'type': 'AllowedValues'
}]
}
},
'required': False,
'updatable': False,
}
c = constraints.AllowedValues(['foo', 'bar'])
s = schema.String('A string',
default='wibble',
required=True,
constraints=[c])
l = schema.List('A list', schema=s)
self.assertEqual(d, dict(l))
class CombinationAlarm(Alarm):
rule_schema = {
COMBINATION_OP:
schema.String(
_('Operator for combination. Must be one of %s') %
list(COMBINATION_OPERATORS),
default=C_AND,
),
ALARM_IDS:
schema.List(
_('List of alarm IDs for combination.'),
schema=schema.String(
_('The ID of an alarm.'),
required=True,
),
required=True,
)
}
def __init__(self, name, spec, **kwargs):
super(CombinationAlarm, self).__init__(name, spec, **kwargs)
rule_spec = spec.get('rule', {})
self.rule = schema.Spec(self.rule_schema, rule_spec)
self.namespace = 'combination'
def test_resolve(self):
sot = schema.List(schema=schema.String())
res = sot.resolve(['v1', 'v2'])
self.assertEqual(['v1', 'v2'], res)
self.assertRaises(TypeError, sot.resolve, 123)
def test__getitem__(self):
sot = FakeSchema(description='desc', default='default', required=False,
constraints=[{'foo': 'bar'}])
self.assertEqual('desc', sot['description'])
self.assertEqual('default', sot['default'])
self.assertEqual(False, sot['required'])
self.assertEqual([{'foo': 'bar'}], sot['constraints'])
self.assertRaises(KeyError, sot.__getitem__, 'bogus')
sot = schema.List(schema=schema.String())
self.assertEqual(
{
'*': {
'required': False,
'type': 'String',
'updatable': False
}
},
sot['schema'])
def test_schema_nested_schema(self):
d = {
'type': 'List',
'description': 'A list',
'schema': {
'*': {
'type': 'Map',
'description': 'A map',
'schema': {
'Foo': {
'type':
'String',
'description':
'A string',
'default':
'wibble',
'readonly':
False,
'required':
True,
'constraints': [{
'type': 'AllowedValues',
'constraint': ['foo', 'bar']
}]
}
},
'readonly': False,
'required': False,
}
},
'readonly': False,
'required': False,
}
c = constraints.AllowedValues(['foo', 'bar'])
s = schema.String('A string',
default='wibble',
required=True,
constraints=[c])
m = schema.Map('A map', schema={'Foo': s})
l = schema.List('A list', schema=m)
self.assertEqual(d, dict(l))
class ServerProfile(base.Profile):
'''Profile for an OpenStack Nova server.'''
KEYS = (
CONTEXT,
ADMIN_PASS,
AUTO_DISK_CONFIG,
AVAILABILITY_ZONE,
BLOCK_DEVICE_MAPPING,
BLOCK_DEVICE_MAPPING_V2,
CONFIG_DRIVE,
FLAVOR,
IMAGE,
KEY_NAME,
METADATA,
NAME,
NETWORKS,
PERSONALITY,
SECURITY_GROUPS,
USER_DATA,
SCHEDULER_HINTS,
) = (
'context',
'adminPass',
'auto_disk_config',
'availability_zone',
'block_device_mapping',
'block_device_mapping_v2',
'config_drive',
'flavor',
'image',
'key_name',
'metadata',
'name',
'networks',
'personality',
'security_groups',
'user_data',
'scheduler_hints',
)
BDM_KEYS = (
BDM_DEVICE_NAME,
BDM_VOLUME_SIZE,
) = (
'device_name',
'volume_size',
)
BDM2_KEYS = (
BDM2_UUID,
BDM2_SOURCE_TYPE,
BDM2_DESTINATION_TYPE,
BDM2_DISK_BUS,
BDM2_DEVICE_NAME,
BDM2_VOLUME_SIZE,
BDM2_GUEST_FORMAT,
BDM2_BOOT_INDEX,
BDM2_DEVICE_TYPE,
BDM2_DELETE_ON_TERMINATION,
) = (
'uuid',
'source_type',
'destination_type',
'disk_bus',
'device_name',
'volume_size',
'guest_format',
'boot_index',
'device_type',
'delete_on_termination',
)
NETWORK_KEYS = (
PORT,
FIXED_IP,
NETWORK,
) = (
'port',
'fixed-ip',
'network',
)
PERSONALITY_KEYS = (
PATH,
CONTENTS,
) = (
'path',
'contents',
)
SCHEDULER_HINTS_KEYS = (GROUP, ) = ('group', )
properties_schema = {
CONTEXT:
schema.Map(_('Customized security context for operating servers.'), ),
ADMIN_PASS:
schema.String(_('Password for the administrator account.'), ),
AUTO_DISK_CONFIG:
schema.Boolean(
_('Whether the disk partition is done automatically.'),
default=True,
),
AVAILABILITY_ZONE:
schema.String(
_('Name of availability zone for running the server.'), ),
BLOCK_DEVICE_MAPPING:
schema.List(
_('A list specifying the properties of block devices to be used '
'for this server.'),
schema=schema.Map(
_('A map specifying the properties of a block device to be '
'used by the server.'),
schema={
BDM_DEVICE_NAME:
schema.String(
_('Block device name, should be <=255 chars.'), ),
BDM_VOLUME_SIZE:
schema.Integer(_('Block device size in GB.'), ),
}),
),
BLOCK_DEVICE_MAPPING_V2:
schema.List(
_('A list specifying the properties of block devices to be used '
'for this server.'),
schema=schema.Map(
_('A map specifying the properties of a block device to be '
'used by the server.'),
schema={
BDM2_UUID:
schema.String(
_('ID of the source image, snapshot or volume'), ),
BDM2_SOURCE_TYPE:
schema.String(
_('Volume source type, should be image, snapshot, '
'volume or blank'),
required=True,
),
BDM2_DESTINATION_TYPE:
schema.String(
_('Volume destination type, should be volume or '
'local'),
required=True,
),
BDM2_DISK_BUS:
schema.String(_('Bus of the device.'), ),
BDM2_DEVICE_NAME:
schema.String(
_('Name of the device(e.g. vda, xda, ....).'), ),
BDM2_VOLUME_SIZE:
schema.Integer(
_('Size of the block device in MB(for swap) and '
'in GB(for other formats)'),
required=True,
),
BDM2_GUEST_FORMAT:
schema.String(
_('Specifies the disk file system format(e.g. swap, '
'ephemeral, ...).'), ),
BDM2_BOOT_INDEX:
schema.Integer(_('Define the boot order of the device'), ),
BDM2_DEVICE_TYPE:
schema.String(
_('Type of the device(e.g. disk, cdrom, ...).'), ),
BDM2_DELETE_ON_TERMINATION:
schema.Boolean(
_('Whether to delete the volume when the server '
'stops.'), ),
}),
),
CONFIG_DRIVE:
schema.Boolean(
_('Whether config drive should be enabled for the server.'), ),
FLAVOR:
schema.String(
_('ID of flavor used for the server.'),
required=True,
updatable=True,
),
IMAGE:
schema.String(
# IMAGE is not required, because there could be BDM or BDMv2
# support and the corresponding settings effective
_('ID of image to be used for the new server.'),
updatable=True,
),
KEY_NAME:
schema.String(_('Name of Nova keypair to be injected to server.'), ),
METADATA:
schema.Map(
_('A collection of key/value pairs to be associated with the '
'server created. Both key and value should be <=255 chars.'),
updatable=True,
),
NAME:
schema.String(
_('Name of the server.'),
updatable=True,
),
NETWORKS:
schema.List(
_('List of networks for the server.'),
schema=schema.Map(
_('A map specifying the properties of a network for uses.'),
schema={
NETWORK:
schema.String(
_('Name or ID of network to create a port on.'), ),
PORT:
schema.String(_('Port ID to be used by the network.'), ),
FIXED_IP:
schema.String(_('Fixed IP to be used by the network.'), ),
},
),
updatable=True,
),
PERSONALITY:
schema.List(
_('List of files to be injected into the server, where each.'),
schema=schema.Map(
_('A map specifying the path & contents for an injected '
'file.'),
schema={
PATH:
schema.String(
_('In-instance path for the file to be injected.'),
required=True,
),
CONTENTS:
schema.String(
_('Contents of the file to be injected.'),
required=True,
),
},
),
),
SCHEDULER_HINTS:
schema.Map(
_('A collection of key/value pairs to be associated with the '
'Scheduler hints. Both key and value should be <=255 chars.'), ),
SECURITY_GROUPS:
schema.List(
_('List of security groups.'),
schema=schema.String(
_('Name of a security group'),
required=True,
),
),
USER_DATA:
schema.String(_('User data to be exposed by the metadata server.'), ),
}
OP_NAMES = (OP_REBOOT, ) = ('reboot', )
REBOOT_TYPE = 'type'
REBOOT_TYPES = (REBOOT_SOFT, REBOOT_HARD) = ('SOFT', 'HARD')
OPERATIONS = {
OP_REBOOT:
schema.Operation(
_("Reboot the nova server."),
schema={
REBOOT_TYPE:
schema.String(
_("Type of reboot which can be 'SOFT' or 'HARD'."),
default=REBOOT_SOFT,
constraints=[
constraints.AllowedValues(REBOOT_TYPES),
])
})
}
def __init__(self, type_name, name, **kwargs):
super(ServerProfile, self).__init__(type_name, name, **kwargs)
self._novaclient = None
self._neutronclient = None
self.server_id = None
def nova(self, obj):
'''Construct nova client based on object.
:param obj: Object for which the client is created. It is expected to
be None when retrieving an existing client. When creating
a client, it contains the user and project to be used.
'''
if self._novaclient is not None:
return self._novaclient
params = self._build_conn_params(obj.user, obj.project)
self._novaclient = driver_base.SenlinDriver().compute(params)
return self._novaclient
def neutron(self, obj):
'''Construct neutron client based on object.
:param obj: Object for which the client is created. It is expected to
be None when retrieving an existing client. When creating
a client, it contains the user and project to be used.
'''
if self._neutronclient is not None:
return self._neutronclient
params = self._build_conn_params(obj.user, obj.project)
self._neutronclient = driver_base.SenlinDriver().network(params)
return self._neutronclient
def do_validate(self, obj):
'''Validate if the spec has provided valid info for server creation.'''
return True
def _resolve_bdm(self, bdm):
for bd in bdm:
for key in self.BDM2_KEYS:
if bd[key] is None:
del bd[key]
return bdm
def _resolve_network(self, networks, client):
for network in networks:
net_name_id = network.get(self.NETWORK)
if net_name_id:
res = client.network_get(net_name_id)
network['uuid'] = res.id
del network[self.NETWORK]
if network['port'] is None:
del network['port']
if network['fixed-ip'] is None:
del network['fixed-ip']
return networks
def do_create(self, obj):
'''Create a server using the given profile.'''
kwargs = {}
for key in self.KEYS:
# context is treated as connection parameters
if key == self.CONTEXT:
continue
if self.properties[key] is not None:
kwargs[key] = self.properties[key]
name_or_id = self.properties[self.IMAGE]
if name_or_id is not None:
image = self.nova(obj).image_find(name_or_id)
# wait for new version of openstacksdk to fix this
kwargs.pop(self.IMAGE)
kwargs['imageRef'] = image.id
flavor_id = self.properties[self.FLAVOR]
flavor = self.nova(obj).flavor_find(flavor_id, False)
# wait for new verson of openstacksdk to fix this
kwargs.pop(self.FLAVOR)
kwargs['flavorRef'] = flavor.id
name = self.properties[self.NAME]
if name:
kwargs['name'] = name
else:
kwargs['name'] = obj.name
metadata = self.properties[self.METADATA] or {}
if obj.cluster_id:
metadata['cluster'] = obj.cluster_id
kwargs['metadata'] = metadata
block_device_mapping_v2 = self.properties[self.BLOCK_DEVICE_MAPPING_V2]
if block_device_mapping_v2 is not None:
kwargs['block_device_mapping_v2'] = self._resolve_bdm(
block_device_mapping_v2)
user_data = self.properties[self.USER_DATA]
if user_data is not None:
ud = encodeutils.safe_encode(user_data)
kwargs['user_data'] = encodeutils.safe_decode(base64.b64encode(ud))
networks = self.properties[self.NETWORKS]
if networks is not None:
kwargs['networks'] = self._resolve_network(networks,
self.neutron(obj))
secgroups = self.properties[self.SECURITY_GROUPS]
if secgroups:
kwargs['security_groups'] = [{'name': sg} for sg in secgroups]
if 'placement' in obj.data:
if 'zone' in obj.data['placement']:
kwargs['availability_zone'] = obj.data['placement']['zone']
if 'servergroup' in obj.data['placement']:
group_id = obj.data['placement']['servergroup']
hints = self.properties.get(self.SCHEDULER_HINTS, {})
hints.update({'group': group_id})
kwargs['scheduler_hints'] = hints
LOG.info('Creating server: %s' % kwargs)
server = self.nova(obj).server_create(**kwargs)
self.nova(obj).wait_for_server(server.id)
self.server_id = server.id
return server.id
def do_delete(self, obj):
self.server_id = obj.physical_id
if not obj.physical_id:
return True
try:
self.nova(obj).server_delete(self.server_id)
self.nova(obj).wait_for_server_delete(self.server_id)
except Exception as ex:
LOG.error('Error: %s' % six.text_type(ex))
return False
return True
def do_update(self, obj, new_profile=None, **params):
'''Perform update on the server.
:param obj: the server to operate on
:param new_profile: the new profile for the server.
:param params: a dictionary of optional parameters.
'''
self.server_id = obj.physical_id
if not self.server_id:
return True
if not new_profile:
return True
if not self.validate_for_update(new_profile):
return False
# TODO(Yanyan Hu): Update block_device properties
# Update basic properties of server
if not self._update_basic_properties(obj, new_profile):
return False
# Update server flavor
flavor = self.properties[self.FLAVOR]
new_flavor = new_profile.properties[self.FLAVOR]
if new_flavor != flavor:
try:
self._update_flavor(obj, flavor, new_flavor)
except Exception as ex:
LOG.exception(_('Failed in updating server flavor: %s'),
six.text_type(ex))
return False
# Update server image
old_passwd = self.properties.get(self.ADMIN_PASS)
passwd = old_passwd
if new_profile.properties[self.ADMIN_PASS] is not None:
passwd = new_profile.properties[self.ADMIN_PASS]
image = self.properties[self.IMAGE]
new_image = new_profile.properties[self.IMAGE]
if new_image != image:
try:
self._update_image(obj, image, new_image, passwd)
except Exception as ex:
LOG.exception(_('Failed in updating server image: %s'),
six.text_type(ex))
return False
elif old_passwd != passwd:
# TODO(Jun Xu): update server admin password
pass
# Update server network
networks_current = self.properties[self.NETWORKS]
networks_create = new_profile.properties[self.NETWORKS]
networks_delete = copy.deepcopy(networks_current)
for network in networks_current:
if network in networks_create:
networks_create.remove(network)
networks_delete.remove(network)
if networks_create or networks_delete:
# We have network interfaces to be deleted and/or created
try:
self._update_network(obj, networks_create, networks_delete)
except Exception as ex:
LOG.exception(_('Failed in updating server network: %s'),
six.text_type(ex))
return False
return True
def _update_basic_properties(self, obj, new_profile):
'''Updating basic server properties including name, metadata'''
# Update server metadata
metadata = self.properties[self.METADATA]
new_metadata = new_profile.properties[self.METADATA]
if new_metadata != metadata:
if new_metadata is None:
new_metadata = {}
try:
self.nova(obj).server_metadata_update(self.server_id,
new_metadata)
except Exception as ex:
LOG.exception(_('Failed in updating server metadata: %s'),
six.text_type(ex))
return False
# Update server name
name = self.properties[self.NAME]
new_name = new_profile.properties[self.NAME]
if new_name != name:
attrs = {'name': new_name if new_name else obj.name}
try:
self.nova(obj).server_update(self.server_id, **attrs)
except Exception as ex:
LOG.exception(_('Failed in updating server name: %s'),
six.text_type(ex))
return False
return True
def _update_flavor(self, obj, old_flavor, new_flavor):
'''Updating server flavor'''
res = self.nova(obj).flavor_find(old_flavor)
old_flavor_id = res.id
res = self.nova(obj).flavor_find(new_flavor)
new_flavor_id = res.id
if new_flavor_id == old_flavor_id:
return
try:
self.nova(obj).server_resize(obj.physical_id, new_flavor_id)
self.nova(obj).wait_for_server(obj.physical_id, 'VERIFY_RESIZE')
except Exception as ex:
LOG.error(_("Server resizing failed, revert it: %s"),
six.text_type(ex))
self.nova(obj).server_resize_revert(obj.physical_id)
self.nova(obj).wait_for_server(obj.physical_id, 'ACTIVE')
raise exception.ResourceUpdateFailure(resource=obj.physical_id)
self.nova(obj).server_resize_confirm(obj.physical_id)
self.nova(obj).wait_for_server(obj.physical_id, 'ACTIVE')
def _update_image(self, obj, old_image, new_image, admin_password):
'''Updating server image'''
if old_image:
res = self.nova(obj).image_find(old_image)
image_id = res.id
else:
server = self.nova(obj).server_get(obj.physical_id)
image_id = server.image['id']
if new_image:
res = self.nova(obj).image_find(new_image)
new_image_id = res.id
if new_image_id != image_id:
# (Jun Xu): Not update name here if name changed,
# it should be updated in do_update
self.nova(obj).server_rebuild(obj.physical_id, new_image_id,
self.properties.get(self.NAME),
admin_password)
self.nova(obj).wait_for_server(obj.physical_id, 'ACTIVE')
else:
# TODO(Yanyan Hu): Allow server update with new_image
# set to None if Nova service supports it
LOG.error(
_("Updating Nova server with image set to None is "
"not supported by Nova."))
raise exception.ResourceUpdateFailure(resource=obj.physical_id)
def _update_network(self, obj, networks_create, networks_delete):
'''Updating server network interfaces'''
server = self.nova(obj).server_get(self.server_id)
ports_existing = list(self.nova(obj).server_interface_list(server))
ports = []
for p in ports_existing:
fixed_ips = []
for addr in p['fixed_ips']:
fixed_ips.append(addr['ip_address'])
ports.append({
'port_id': p['port_id'],
'net_id': p['net_id'],
'fixed_ips': fixed_ips
})
# Detach some existing ports
# Step1. Accurately search port with port_id or fixed-ip/net_id
for n in networks_delete:
if n['port'] is not None:
for p in ports:
if p['port_id'] == n['port']:
ports.remove(p)
break
res = self.nova(obj).server_interface_delete(n['port'], server)
elif n['fixed-ip'] is not None:
res = self.neutron(obj).network_get(n['network'])
net_id = res.id
for p in ports:
if (n['fixed-ip'] in p['fixed_ips']) and (p['net_id']
== net_id):
res = self.nova(obj).server_interface_delete(
p['port_id'], server)
ports.remove(p)
break
# Step2. Fuzzy search port with net_id
for n in networks_delete:
if n['port'] is None and n['fixed-ip'] is None:
res = self.neutron(obj).network_get(n['network'])
net_id = res.id
for p in ports:
if p['net_id'] == net_id:
res = self.nova(obj).server_interface_delete(
p['port_id'], server)
ports.remove(p)
break
# Attach new ports added in new network definition
for n in networks_create:
net_name_id = n.get(self.NETWORK, None)
if net_name_id:
res = self.neutron(obj).network_get(net_name_id)
n['net_id'] = res.id
if n['fixed-ip'] is not None:
n['fixed_ips'] = [{'ip_address': n['fixed-ip']}]
if n['port'] is not None:
n['port_id'] = n['port']
del n['network']
del n['port']
del n['fixed-ip']
self.nova(obj).server_interface_create(server, **n)
return
def do_check(self, obj):
if not obj.physical_id:
return False
self.server_id = obj.physical_id
try:
server = self.nova(obj).server_get(self.server_id)
except Exception as ex:
LOG.error('Error: %s' % six.text_type(ex))
return False
if (server is None or server.status != 'ACTIVE'):
return False
return True
def do_get_details(self, obj):
known_keys = {
'OS-DCF:diskConfig', 'OS-EXT-AZ:availability_zone',
'OS-EXT-STS:power_state', 'OS-EXT-STS:vm_state', 'accessIPv4',
'accessIPv6', 'config_drive', 'created', 'hostId', 'id',
'key_name', 'locked', 'metadata', 'name',
'os-extended-volumes:volumes_attached', 'progress', 'status',
'updated'
}
if obj.physical_id is None or obj.physical_id == '':
return {}
try:
server = self.nova(obj).server_get(obj.physical_id)
except exception.InternalError as ex:
return {'Error': {'code': ex.code, 'message': six.text_type(ex)}}
if server is None:
return {}
server_data = server.to_dict()
details = {
'image': server_data['image']['id'],
'flavor': server_data['flavor']['id'],
}
for key in known_keys:
if key in server_data:
details[key] = server_data[key]
# process special keys like 'OS-EXT-STS:task_state': these keys have
# a default value '-' when not existing
special_keys = [
'OS-EXT-STS:task_state',
'OS-SRV-USG:launched_at',
'OS-SRV-USG:terminated_at',
]
for key in special_keys:
if key in server_data:
val = server_data[key]
details[key] = val if val else '-'
# process network addresses
details['addresses'] = {}
for net in server_data['addresses']:
addresses = []
for addr in server_data['addresses'][net]:
# Ignore IPv6 address
if addr['version'] == 4:
addresses.append(addr['addr'])
details['addresses'][net] = addresses
# process security groups
sgroups = []
if 'security_groups' in server_data:
for sg in server_data['security_groups']:
sgroups.append(sg['name'])
if len(sgroups) == 0:
details['security_groups'] = ''
elif len(sgroups) == 1:
details['security_groups'] = sgroups[0]
else:
details['security_groups'] = sgroups
return dict((k, details[k]) for k in sorted(details))
def do_join(self, obj, cluster_id):
if not obj.physical_id:
return False
metadata = self.nova(obj).server_metadata_get(obj.physical_id) or {}
metadata['cluster'] = cluster_id
self.nova(obj).server_metadata_update(obj.physical_id, metadata)
return super(ServerProfile, self).do_join(obj, cluster_id)
def do_leave(self, obj):
if not obj.physical_id:
return False
self.nova(obj).server_metadata_delete(obj.physical_id, ['cluster'])
return super(ServerProfile, self).do_leave(obj)
def do_rebuild(self, obj):
if not obj.physical_id:
return False
self.server_id = obj.physical_id
try:
server = self.nova(obj).server_get(self.server_id)
except Exception as ex:
LOG.exception(_('Failed at getting server: %s'), six.text_type(ex))
return False
if server is None or server.image is None:
return False
image_id = server.image['id']
admin_pass = self.properties.get(self.ADMIN_PASS)
try:
self.nova(obj).server_rebuild(self.server_id, image_id,
self.properties.get(self.NAME),
admin_pass)
self.nova(obj).wait_for_server(self.server_id, 'ACTIVE')
except Exception as ex:
LOG.exception(_('Failed at rebuilding server: %s'),
six.text_type(ex))
return False
return True
def do_recover(self, obj, **options):
if 'operation' in options:
if options['operation'] == 'REBUILD':
return self.do_rebuild(obj)
res = super(ServerProfile, self).do_recover(obj, **options)
return res
def handle_reboot(self, obj, **options):
"""Handler for the reboot operation."""
pass
class ZonePlacementPolicy(base.Policy):
"""Policy for placing members of a cluster across availability zones."""
VERSION = '1.0'
VERSIONS = {
'1.0': [
{'status': consts.EXPERIMENTAL, 'since': '2016.04'},
{'status': consts.SUPPORTED, 'since': '2016.10'},
]
}
PRIORITY = 300
TARGET = [
('BEFORE', consts.CLUSTER_SCALE_OUT),
('BEFORE', consts.CLUSTER_SCALE_IN),
('BEFORE', consts.CLUSTER_RESIZE),
('BEFORE', consts.NODE_CREATE),
]
PROFILE_TYPE = [
'os.nova.server-1.0',
]
KEYS = (
ZONES,
) = (
'zones',
)
_AZ_KEYS = (
ZONE_NAME, ZONE_WEIGHT,
) = (
'name', 'weight',
)
properties_schema = {
ZONES: schema.List(
_('List of availability zones to choose from.'),
schema=schema.Map(
_('An availability zone as candidate.'),
schema={
ZONE_NAME: schema.String(
_('Name of an availability zone.'),
),
ZONE_WEIGHT: schema.Integer(
_('Weight of the availability zone (default is 100).'),
default=100,
required=False,
)
},
),
),
}
def __init__(self, name, spec, **kwargs):
super(ZonePlacementPolicy, self).__init__(name, spec, **kwargs)
self.zones = dict((z[self.ZONE_NAME], z[self.ZONE_WEIGHT])
for z in self.properties.get(self.ZONES))
def validate(self, context, validate_props=False):
super(ZonePlacementPolicy, self).validate(context, validate_props)
if not validate_props:
return True
nc = self.nova(context.user_id, context.project_id)
input_azs = sorted(self.zones.keys())
valid_azs = nc.validate_azs(input_azs)
invalid_azs = sorted(set(input_azs) - set(valid_azs))
if invalid_azs:
msg = _("The specified %(key)s '%(value)s' could not be "
"found.") % {'key': self.ZONE_NAME,
'value': list(invalid_azs)}
raise exc.InvalidSpec(message=msg)
return True
def _create_plan(self, current, zones, count, expand):
"""Compute a placement plan based on the weights of AZs.
:param current: Distribution of existing nodes.
:returns: A dict that contains a placement plan.
"""
# sort candidate zones by distribution and covert it into a list
candidates = sorted(zones.items(), key=operator.itemgetter(1),
reverse=expand)
sum_weight = sum(zones.values())
if expand:
total = count + sum(current.values())
else:
total = sum(current.values()) - count
remain = count
plan = dict.fromkeys(zones.keys(), 0)
for i in range(len(zones)):
zone = candidates[i][0]
weight = candidates[i][1]
q = total * weight / float(sum_weight)
if expand:
quota = int(math.ceil(q))
headroom = quota - current[zone]
else:
quota = int(math.floor(q))
headroom = current[zone] - quota
if headroom <= 0:
continue
if headroom < remain:
plan[zone] = headroom
remain -= headroom
else:
plan[zone] = remain if remain > 0 else 0
remain = 0
break
if remain > 0:
return None
# filter out zero values
result = {}
for z, c in plan.items():
if c > 0:
result[z] = c
return result
def _get_count(self, cluster_id, action):
"""Get number of nodes to create or delete.
:param cluster_id: The ID of the target cluster.
:param action: The action object which triggered this policy check.
:return: An integer value which can be 1) positive - number of nodes
to create; 2) negative - number of nodes to delete; 3) 0 -
something wrong happened, and the policy check failed.
"""
if action.action == consts.NODE_CREATE:
# skip the policy if availability zone is specified in profile
profile = action.entity.rt['profile']
if profile.properties[profile.AVAILABILITY_ZONE]:
return 0
return 1
if action.action == consts.CLUSTER_RESIZE:
if action.data.get('deletion', None):
return -action.data['deletion']['count']
elif action.data.get('creation', None):
return action.data['creation']['count']
db_cluster = co.Cluster.get(action.context, cluster_id)
current = no.Node.count_by_cluster(action.context, cluster_id)
res = scaleutils.parse_resize_params(action, db_cluster, current)
if res[0] == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = res[1]
LOG.error(res[1])
return 0
if action.data.get('deletion', None):
return -action.data['deletion']['count']
else:
return action.data['creation']['count']
if action.action == consts.CLUSTER_SCALE_IN:
pd = action.data.get('deletion', None)
if pd is None:
return -action.inputs.get('count', 1)
else:
return -pd.get('count', 1)
# CLUSTER_SCALE_OUT: an action that inflates the cluster
pd = action.data.get('creation', None)
if pd is None:
return action.inputs.get('count', 1)
else:
return pd.get('count', 1)
def pre_op(self, cluster_id, action):
"""Callback function when cluster membership is about to change.
:param cluster_id: ID of the target cluster.
:param action: The action that triggers this policy check.
"""
count = self._get_count(cluster_id, action)
if count == 0:
return
expand = True
if count < 0:
expand = False
count = -count
cluster = cm.Cluster.load(action.context, cluster_id)
nc = self.nova(cluster.user, cluster.project)
zones_good = nc.validate_azs(self.zones.keys())
if len(zones_good) == 0:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('No availability zone found available.')
LOG.error('No availability zone found available.')
return
zones = {}
for z, w in self.zones.items():
if z in zones_good:
zones[z] = w
current = cluster.get_zone_distribution(action.context, zones.keys())
result = self._create_plan(current, zones, count, expand)
if not result:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('There is no feasible plan to '
'handle all nodes.')
LOG.error('There is no feasible plan to handle all nodes.')
return
if expand:
if 'creation' not in action.data:
action.data['creation'] = {}
action.data['creation']['count'] = count
action.data['creation']['zones'] = result
else:
if 'deletion' not in action.data:
action.data['deletion'] = {}
action.data['deletion']['count'] = count
action.data['deletion']['zones'] = result
def test_validate_failed(self):
sot = schema.List(schema=schema.String())
ex = self.assertRaises(exc.ESchema, sot.validate, None)
self.assertEqual("'None' is not a List", six.text_type(ex))
def test_validate(self):
sot = schema.List(schema=schema.String())
res = sot.validate(['abc', 'def'])
self.assertIsNone(res)
class ServerProfile(base.KubeBaseProfile):
"""Profile for an kubernetes master server."""
VERSIONS = {'1.0': [{'status': consts.EXPERIMENTAL, 'since': '2017.10'}]}
KEYS = (
CONTEXT,
FLAVOR,
IMAGE,
KEY_NAME,
PUBLIC_NETWORK,
BLOCK_DEVICE_MAPPING_V2,
) = (
'context',
'flavor',
'image',
'key_name',
'public_network',
'block_device_mapping_v2',
)
INTERNAL_KEYS = (
KUBEADM_TOKEN,
KUBE_MASTER_IP,
SECURITY_GROUP,
PRIVATE_NETWORK,
PRIVATE_SUBNET,
PRIVATE_ROUTER,
KUBE_MASTER_FLOATINGIP,
KUBE_MASTER_FLOATINGIP_ID,
SCALE_OUT_RECV_ID,
SCALE_OUT_URL,
) = (
'kubeadm_token',
'kube_master_ip',
'security_group',
'private_network',
'private_subnet',
'private_router',
'kube_master_floatingip',
'kube_master_floatingip_id',
'scale_out_recv_id',
'scale_out_url',
)
NETWORK_KEYS = (
PORT,
FIXED_IP,
NETWORK,
PORT_SECURITY_GROUPS,
FLOATING_NETWORK,
FLOATING_IP,
) = (
'port',
'fixed_ip',
'network',
'security_groups',
'floating_network',
'floating_ip',
)
BDM2_KEYS = (
BDM2_UUID,
BDM2_SOURCE_TYPE,
BDM2_DESTINATION_TYPE,
BDM2_DISK_BUS,
BDM2_DEVICE_NAME,
BDM2_VOLUME_SIZE,
BDM2_GUEST_FORMAT,
BDM2_BOOT_INDEX,
BDM2_DEVICE_TYPE,
BDM2_DELETE_ON_TERMINATION,
) = (
'uuid',
'source_type',
'destination_type',
'disk_bus',
'device_name',
'volume_size',
'guest_format',
'boot_index',
'device_type',
'delete_on_termination',
)
properties_schema = {
CONTEXT:
schema.Map(_('Customized security context for operating servers.'), ),
FLAVOR:
schema.String(
_('ID of flavor used for the server.'),
required=True,
updatable=True,
),
IMAGE:
schema.String(
# IMAGE is not required, because there could be BDM or BDMv2
# support and the corresponding settings effective
_('ID of image to be used for the new server.'),
updatable=True,
),
KEY_NAME:
schema.String(_('Name of Nova keypair to be injected to server.'), ),
PUBLIC_NETWORK:
schema.String(
_('Public network for kubernetes.'),
required=True,
),
BLOCK_DEVICE_MAPPING_V2:
schema.List(
_('A list specifying the properties of block devices to be used '
'for this server.'),
schema=schema.Map(
_('A map specifying the properties of a block device to be '
'used by the server.'),
schema={
BDM2_UUID:
schema.String(
_('ID of the source image, snapshot or volume'), ),
BDM2_SOURCE_TYPE:
schema.String(
_("Volume source type, must be one of 'image', "
"'snapshot', 'volume' or 'blank'"),
required=True,
),
BDM2_DESTINATION_TYPE:
schema.String(
_("Volume destination type, must be 'volume' or "
"'local'"),
required=True,
),
BDM2_DISK_BUS:
schema.String(_('Bus of the device.'), ),
BDM2_DEVICE_NAME:
schema.String(
_('Name of the device(e.g. vda, xda, ....).'), ),
BDM2_VOLUME_SIZE:
schema.Integer(
_('Size of the block device in MB(for swap) and '
'in GB(for other formats)'),
required=True,
),
BDM2_GUEST_FORMAT:
schema.String(
_('Specifies the disk file system format(e.g. swap, '
'ephemeral, ...).'), ),
BDM2_BOOT_INDEX:
schema.Integer(_('Define the boot order of the device'), ),
BDM2_DEVICE_TYPE:
schema.String(
_('Type of the device(e.g. disk, cdrom, ...).'), ),
BDM2_DELETE_ON_TERMINATION:
schema.Boolean(
_('Whether to delete the volume when the server '
'stops.'), ),
}),
),
}
def __init__(self, type_name, name, **kwargs):
super(ServerProfile, self).__init__(type_name, name, **kwargs)
self.server_id = None
def do_cluster_create(self, obj):
self._generate_kubeadm_token(obj)
self._create_security_group(obj)
self._create_network(obj)
def do_cluster_delete(self, obj):
if obj.dependents and 'kube-node' in obj.dependents:
msg = ("Cluster %s delete failed, "
"Node clusters %s must be deleted first." %
(obj.id, obj.dependents['kube-node']))
raise exc.EResourceDeletion(type='kubernetes.master',
id=obj.id,
message=msg)
self._delete_network(obj)
self._delete_security_group(obj)
def do_create(self, obj):
"""Create a server for the node object.
:param obj: The node object for which a server will be created.
"""
kwargs = {}
for key in self.KEYS:
if self.properties[key] is not None:
kwargs[key] = self.properties[key]
image_ident = self.properties[self.IMAGE]
if image_ident is not None:
image = self._validate_image(obj, image_ident, 'create')
kwargs.pop(self.IMAGE)
kwargs['imageRef'] = image.id
flavor_ident = self.properties[self.FLAVOR]
flavor = self._validate_flavor(obj, flavor_ident, 'create')
kwargs.pop(self.FLAVOR)
kwargs['flavorRef'] = flavor.id
keypair_name = self.properties[self.KEY_NAME]
if keypair_name:
keypair = self._validate_keypair(obj, keypair_name, 'create')
kwargs['key_name'] = keypair.name
kwargs['name'] = obj.name
metadata = self._build_metadata(obj, {})
kwargs['metadata'] = metadata
jj_vars = {}
cluster_data = self._get_cluster_data(obj)
kwargs['networks'] = [{'uuid': cluster_data[self.PRIVATE_NETWORK]}]
# Get user_data parameters from metadata
jj_vars['KUBETOKEN'] = cluster_data[self.KUBEADM_TOKEN]
jj_vars['MASTER_FLOATINGIP'] = cluster_data[
self.KUBE_MASTER_FLOATINGIP]
block_device_mapping_v2 = self.properties[self.BLOCK_DEVICE_MAPPING_V2]
if block_device_mapping_v2 is not None:
kwargs['block_device_mapping_v2'] = self._resolve_bdm(
obj, block_device_mapping_v2, 'create')
# user_data = self.properties[self.USER_DATA]
user_data = base.loadScript('./scripts/master.sh')
if user_data is not None:
# Use jinja2 to replace variables defined in user_data
try:
jj_t = jinja2.Template(user_data)
user_data = jj_t.render(**jj_vars)
except (jinja2.exceptions.UndefinedError, ValueError) as ex:
# TODO(anyone) Handle jinja2 error
pass
ud = encodeutils.safe_encode(user_data)
kwargs['user_data'] = encodeutils.safe_decode(base64.b64encode(ud))
sgid = self._get_security_group(obj)
kwargs['security_groups'] = [{'name': sgid}]
server = None
resource_id = None
try:
server = self.compute(obj).server_create(**kwargs)
self.compute(obj).wait_for_server(server.id)
server = self.compute(obj).server_get(server.id)
self._update_master_ip(obj, server.addresses[''][0]['addr'])
self._associate_floatingip(obj, server)
LOG.info("Created master node: %s" % server.id)
return server.id
except exc.InternalError as ex:
if server and server.id:
resource_id = server.id
raise exc.EResourceCreation(type='server',
message=six.text_type(ex),
resource_id=resource_id)
def do_delete(self, obj, **params):
"""Delete the physical resource associated with the specified node.
:param obj: The node object to operate on.
:param kwargs params: Optional keyword arguments for the delete
operation.
:returns: This operation always return True unless exception is
caught.
:raises: `EResourceDeletion` if interaction with compute service fails.
"""
if not obj.physical_id:
return True
server_id = obj.physical_id
ignore_missing = params.get('ignore_missing', True)
internal_ports = obj.data.get('internal_ports', [])
force = params.get('force', False)
try:
self._disassociate_floatingip(obj, server_id)
driver = self.compute(obj)
if force:
driver.server_force_delete(server_id, ignore_missing)
else:
driver.server_delete(server_id, ignore_missing)
driver.wait_for_server_delete(server_id)
if internal_ports:
ex = self._delete_ports(obj, internal_ports)
if ex:
raise ex
return True
except exc.InternalError as ex:
raise exc.EResourceDeletion(type='server',
id=server_id,
message=six.text_type(ex))
class HealthPolicy(base.Policy):
"""Policy for health management of a cluster."""
VERSION = '1.1'
VERSIONS = {
'1.0': [
{
'status': consts.EXPERIMENTAL,
'since': '2017.02'
},
{
'status': consts.SUPPORTED,
'since': '2018.06'
},
],
'1.1': [{
'status': consts.SUPPORTED,
'since': '2018.09'
}],
}
PRIORITY = 600
TARGET = [
('BEFORE', consts.CLUSTER_RECOVER),
('BEFORE', consts.CLUSTER_DEL_NODES),
('BEFORE', consts.CLUSTER_SCALE_IN),
('BEFORE', consts.CLUSTER_RESIZE),
('BEFORE', consts.NODE_DELETE),
('AFTER', consts.CLUSTER_DEL_NODES),
('AFTER', consts.CLUSTER_SCALE_IN),
('AFTER', consts.CLUSTER_RESIZE),
('AFTER', consts.NODE_DELETE),
]
# Should be ANY if profile provides health check support?
PROFILE_TYPE = [
'os.nova.server',
'os.heat.stack',
]
KEYS = (DETECTION, RECOVERY) = ('detection', 'recovery')
_DETECTION_KEYS = (DETECTION_MODES, DETECTION_TYPE, DETECTION_OPTIONS,
DETECTION_INTERVAL, NODE_UPDATE_TIMEOUT,
RECOVERY_CONDITIONAL) = ('detection_modes', 'type',
'options', 'interval',
'node_update_timeout',
'recovery_conditional')
_DETECTION_OPTIONS = (
POLL_URL,
POLL_URL_SSL_VERIFY,
POLL_URL_CONN_ERROR_AS_UNHEALTHY,
POLL_URL_HEALTHY_RESPONSE,
POLL_URL_RETRY_LIMIT,
POLL_URL_RETRY_INTERVAL,
) = ('poll_url', 'poll_url_ssl_verify', 'poll_url_conn_error_as_unhealthy',
'poll_url_healthy_response', 'poll_url_retry_limit',
'poll_url_retry_interval')
_RECOVERY_KEYS = (
RECOVERY_ACTIONS,
RECOVERY_FENCING,
RECOVERY_DELETE_TIMEOUT,
RECOVERY_FORCE_RECREATE,
) = (
'actions',
'fencing',
'node_delete_timeout',
'node_force_recreate',
)
FENCING_OPTION_VALUES = (
COMPUTE,
# STORAGE, NETWORK,
) = (
'COMPUTE',
# 'STORAGE', 'NETWORK'
)
ACTION_KEYS = (
ACTION_NAME,
ACTION_PARAMS,
) = (
'name',
'params',
)
properties_schema = {
DETECTION:
schema.Map(
_('Policy aspect for node failure detection.'),
schema={
DETECTION_INTERVAL:
schema.Integer(
_("Number of seconds between pollings. Only "
"required when type is 'NODE_STATUS_POLLING' or "
"'NODE_STATUS_POLL_URL'."),
default=60,
),
NODE_UPDATE_TIMEOUT:
schema.Integer(
_("Number of seconds since last node update to "
"wait before checking node health."),
default=300,
),
RECOVERY_CONDITIONAL:
schema.String(
_("The conditional that determines when recovery should be"
" performed in case multiple detection modes are "
"specified. 'ALL_FAILED' means that all "
"detection modes have to return failed health checks "
"before a node is recovered. 'ANY_FAILED'"
" means that a failed health check with a single "
"detection mode triggers a node recovery."),
constraints=[
constraints.AllowedValues(consts.RECOVERY_CONDITIONAL),
],
default=consts.ANY_FAILED,
required=False,
),
DETECTION_MODES:
schema.List(
_('List of node failure detection modes.'),
schema=schema.Map(
_('Node failure detection mode to try'),
schema={
DETECTION_TYPE:
schema.String(
_('Type of node failure detection.'),
constraints=[
constraints.AllowedValues(
consts.DETECTION_TYPES),
],
required=True,
),
DETECTION_OPTIONS:
schema.Map(schema={
POLL_URL:
schema.String(
_("URL to poll for node status. See "
"documentation for valid expansion "
"parameters. Only required "
"when type is "
"'NODE_STATUS_POLL_URL'."),
default='',
),
POLL_URL_SSL_VERIFY:
schema.Boolean(
_("Whether to verify SSL when calling "
"URL to poll for node status. Only "
"required when type is "
"'NODE_STATUS_POLL_URL'."),
default=True,
),
POLL_URL_CONN_ERROR_AS_UNHEALTHY:
schema.Boolean(
_("Whether to treat URL connection "
"errors as an indication of an "
"unhealthy node. Only required "
"when type is "
"'NODE_STATUS_POLL_URL'."),
default=True,
),
POLL_URL_HEALTHY_RESPONSE:
schema.String(
_("String pattern in the poll URL "
"response body that indicates a "
"healthy node. Required when type "
"is 'NODE_STATUS_POLL_URL'."),
default='',
),
POLL_URL_RETRY_LIMIT:
schema.Integer(
_("Number of times to retry URL "
"polling when its return body is "
"missing POLL_URL_HEALTHY_RESPONSE "
"string before a node is considered "
"down. Required when type is "
"'NODE_STATUS_POLL_URL'."),
default=3,
),
POLL_URL_RETRY_INTERVAL:
schema.Integer(
_("Number of seconds between URL "
"polling retries before a node is "
"considered down. Required when "
"type is 'NODE_STATUS_POLL_URL'."),
default=3,
),
},
default={}),
}))
},
required=True,
),
RECOVERY:
schema.Map(
_('Policy aspect for node failure recovery.'),
schema={
RECOVERY_ACTIONS:
schema.List(_('List of actions to try for node recovery.'),
schema=schema.Map(
_('Action to try for node recovery.'),
schema={
ACTION_NAME:
schema.String(
_("Name of action to execute."),
constraints=[
constraints.AllowedValues(
consts.RECOVERY_ACTIONS),
],
required=True),
ACTION_PARAMS:
schema.Map(_("Parameters for the action")),
})),
RECOVERY_FENCING:
schema.List(
_('List of services to be fenced.'),
schema=schema.String(
_('Service to be fenced.'),
constraints=[
constraints.AllowedValues(FENCING_OPTION_VALUES),
],
required=True,
),
),
RECOVERY_DELETE_TIMEOUT:
schema.Integer(
_("Number of seconds to wait for node deletion to "
"finish and start node creation for recreate "
"recovery option. Required when type is "
"'NODE_STATUS_POLL_URL and recovery action "
"is RECREATE'."),
default=20,
),
RECOVERY_FORCE_RECREATE:
schema.Boolean(
_("Whether to create node even if node deletion "
"failed. Required when type is "
"'NODE_STATUS_POLL_URL' and action recovery "
"action is RECREATE."),
default=False,
),
},
required=True,
),
}
def __init__(self, name, spec, **kwargs):
super(HealthPolicy, self).__init__(name, spec, **kwargs)
self.interval = self.properties[self.DETECTION].get(
self.DETECTION_INTERVAL, 60)
self.node_update_timeout = self.properties[self.DETECTION].get(
self.NODE_UPDATE_TIMEOUT, 300)
self.recovery_conditional = self.properties[self.DETECTION].get(
self.RECOVERY_CONDITIONAL, consts.ANY_FAILED)
DetectionMode = namedtuple('DetectionMode', [self.DETECTION_TYPE] +
list(self._DETECTION_OPTIONS))
self.detection_modes = []
raw_modes = self.properties[self.DETECTION][self.DETECTION_MODES]
for mode in raw_modes:
options = mode[self.DETECTION_OPTIONS]
self.detection_modes.append(
DetectionMode(
mode[self.DETECTION_TYPE], options.get(self.POLL_URL, ''),
options.get(self.POLL_URL_SSL_VERIFY, True),
options.get(self.POLL_URL_CONN_ERROR_AS_UNHEALTHY, True),
options.get(self.POLL_URL_HEALTHY_RESPONSE, ''),
options.get(self.POLL_URL_RETRY_LIMIT, ''),
options.get(self.POLL_URL_RETRY_INTERVAL, '')))
recover_settings = self.properties[self.RECOVERY]
self.recover_actions = recover_settings[self.RECOVERY_ACTIONS]
self.fencing_types = recover_settings[self.RECOVERY_FENCING]
self.node_delete_timeout = recover_settings.get(
self.RECOVERY_DELETE_TIMEOUT, None)
self.node_force_recreate = recover_settings.get(
self.RECOVERY_FORCE_RECREATE, False)
def validate(self, context, validate_props=False):
super(HealthPolicy, self).validate(context,
validate_props=validate_props)
if len(self.recover_actions) > 1:
message = _(
"Only one '%s' is supported for now.") % self.RECOVERY_ACTIONS
raise exc.ESchema(message=message)
if self.interval < cfg.CONF.health_check_interval_min:
message = _("Specified interval of %(interval)d seconds has to be "
"larger than health_check_interval_min of "
"%(min_interval)d seconds set in configuration.") % {
"interval": self.interval,
"min_interval": cfg.CONF.health_check_interval_min
}
raise exc.InvalidSpec(message=message)
# check valid detection types
polling_types = [
consts.NODE_STATUS_POLLING, consts.NODE_STATUS_POLL_URL
]
has_valid_polling_types = all(d.type in polling_types
for d in self.detection_modes)
has_valid_lifecycle_type = (len(self.detection_modes) == 1
and self.detection_modes[0].type
== consts.LIFECYCLE_EVENTS)
if not has_valid_polling_types and not has_valid_lifecycle_type:
message = ("Invalid detection modes in health policy: %s" %
', '.join([d.type for d in self.detection_modes]))
raise exc.InvalidSpec(message=message)
if len(self.detection_modes) != len(set(self.detection_modes)):
message = ("Duplicate detection modes are not allowed in "
"health policy: %s" %
', '.join([d.type for d in self.detection_modes]))
raise exc.InvalidSpec(message=message)
# TODO(Qiming): Add detection of duplicated action names when
# support to list of actions is implemented.
def attach(self, cluster, enabled=True):
""""Hook for policy attach.
Register the cluster for health management.
:param cluster: The cluster to which the policy is being attached to.
:param enabled: The attached cluster policy is enabled or disabled.
:return: A tuple comprising execution result and policy data.
"""
p_type = cluster.rt['profile'].type_name
action_names = [a['name'] for a in self.recover_actions]
if p_type != 'os.nova.server':
if consts.RECOVER_REBUILD in action_names:
err_msg = _("Recovery action REBUILD is only applicable to "
"os.nova.server clusters.")
return False, err_msg
if consts.RECOVER_REBOOT in action_names:
err_msg = _("Recovery action REBOOT is only applicable to "
"os.nova.server clusters.")
return False, err_msg
kwargs = {
'interval': self.interval,
'node_update_timeout': self.node_update_timeout,
'params': {
'recover_action': self.recover_actions,
'node_delete_timeout': self.node_delete_timeout,
'node_force_recreate': self.node_force_recreate,
'recovery_conditional': self.recovery_conditional,
},
'enabled': enabled
}
converted_detection_modes = [d._asdict() for d in self.detection_modes]
detection_mode = {'detection_modes': converted_detection_modes}
kwargs['params'].update(detection_mode)
health_manager.register(cluster.id, engine_id=None, **kwargs)
data = {
'interval': self.interval,
'node_update_timeout': self.node_update_timeout,
'recovery_conditional': self.recovery_conditional,
'node_delete_timeout': self.node_delete_timeout,
'node_force_recreate': self.node_force_recreate,
}
data.update(detection_mode)
return True, self._build_policy_data(data)
def detach(self, cluster):
"""Hook for policy detach.
Unregister the cluster for health management.
:param cluster: The target cluster.
:returns: A tuple comprising the execution result and reason.
"""
ret = health_manager.unregister(cluster.id)
if not ret:
LOG.warning(
'Unregistering health manager for cluster %s '
'timed out.', cluster.id)
return True, ''
def pre_op(self, cluster_id, action, **args):
"""Hook before action execution.
One of the task for this routine is to disable health policy if the
action is a request that will shrink the cluster. The reason is that
the policy may attempt to recover nodes that are to be deleted.
:param cluster_id: The ID of the target cluster.
:param action: The action to be examined.
:param kwargs args: Other keyword arguments to be checked.
:returns: Boolean indicating whether the checking passed.
"""
if action.action in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES,
consts.NODE_DELETE):
health_manager.disable(cluster_id)
return True
if action.action == consts.CLUSTER_RESIZE:
deletion = action.data.get('deletion', None)
if deletion:
health_manager.disable(cluster_id)
return True
cluster = action.entity
current = len(cluster.nodes)
res, reason = scaleutils.parse_resize_params(
action, cluster, current)
if res == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = reason
return False
if action.data.get('deletion', None):
health_manager.disable(cluster_id)
return True
pd = {
'recover_action': self.recover_actions,
'fencing': self.fencing_types,
}
action.data.update({'health': pd})
action.store(action.context)
return True
def post_op(self, cluster_id, action, **args):
"""Hook before action execution.
One of the task for this routine is to re-enable health policy if the
action is a request that will shrink the cluster thus the policy has
been temporarily disabled.
:param cluster_id: The ID of the target cluster.
:param action: The action to be examined.
:param kwargs args: Other keyword arguments to be checked.
:returns: Boolean indicating whether the checking passed.
"""
if action.action in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES,
consts.NODE_DELETE):
health_manager.enable(cluster_id)
return True
if action.action == consts.CLUSTER_RESIZE:
deletion = action.data.get('deletion', None)
if deletion:
health_manager.enable(cluster_id)
return True
cluster = action.entity
current = len(cluster.nodes)
res, reason = scaleutils.parse_resize_params(
action, cluster, current)
if res == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = reason
return False
if action.data.get('deletion', None):
health_manager.enable(cluster_id)
return True
return True
class RegionPlacementPolicy(base.Policy):
"""Policy for placing members of a cluster across multiple regions."""
VERSION = '1.0'
PRIORITY = 200
TARGET = [
('BEFORE', consts.CLUSTER_SCALE_OUT),
('BEFORE', consts.CLUSTER_SCALE_IN),
('BEFORE', consts.CLUSTER_RESIZE),
]
PROFILE_TYPE = ['ANY']
KEYS = (REGIONS, ) = ('regions', )
_AZ_KEYS = (
REGION_NAME,
REGION_WEIGHT,
REGION_CAP,
) = (
'name',
'weight',
'cap',
)
properties_schema = {
REGIONS:
schema.List(
_('List of regions to choose from.'),
schema=schema.Map(
_('An region as a candidate.'),
schema={
REGION_NAME:
schema.String(_('Name of a region.'), ),
REGION_WEIGHT:
schema.Integer(
_('Weight of the region. The default is 100.'),
default=100,
),
REGION_CAP:
schema.Integer(
_('Maximum number of nodes in this region. The '
'default is -1 which means no cap set.'),
default=-1,
),
},
),
),
}
def __init__(self, name, spec, **kwargs):
super(RegionPlacementPolicy, self).__init__(name, spec, **kwargs)
self._keystoneclient = None
regions = {}
for r in self.properties.get(self.REGIONS):
regions[r[self.REGION_NAME]] = {
'weight': r[self.REGION_WEIGHT],
'cap': r[self.REGION_CAP],
}
self.regions = regions
def _keystone(self, obj):
"""Construct keystone client based on object.
:param obj: Object for which the client is created. It is expected to
be None when retrieving an existing client. When creating
a client, it contains the user and project to be used.
"""
if self._keystoneclient is not None:
return self._keystoneclient
params = self._build_conn_params(obj)
self._keystoneclient = driver_base.SenlinDriver().identity(params)
return self._keystoneclient
def _create_plan(self, current, regions, count, expand):
"""Compute a placement plan based on the weights of regions.
:param current: Distribution of existing nodes.
:param regions: Usable regions for node creation.
:param count: Number of nodes to create/delete in this plan.
:param expand: True if the plan is for inflating the cluster, False
otherwise.
:returns: A list of region names selected for the nodes.
"""
# sort candidate regions by distribution and covert it into a list
candidates = sorted(regions.items(),
key=lambda x: x[1]['weight'],
reverse=expand)
sum_weight = sum(r['weight'] for r in regions.values())
if expand:
total = count + sum(current.values())
else:
total = sum(current.values()) - count
remain = count
plan = dict.fromkeys(regions.keys(), 0)
for i in range(len(candidates)):
region = candidates[i]
r_name = region[0]
r_weight = region[1]['weight']
r_cap = region[1]['cap']
# maximum number of nodes on current region
q = total * r_weight / float(sum_weight)
if expand:
quota = int(math.ceil(q))
# respect the cap setting, if any
if r_cap >= 0:
quota = min(quota, r_cap)
headroom = quota - current[r_name]
else:
quota = int(math.floor(q))
headroom = current[r_name] - quota
if headroom <= 0:
continue
if headroom < remain:
plan[r_name] = headroom
remain -= headroom
else:
plan[r_name] = remain if remain > 0 else 0
remain = 0
break
# we have leftovers
if remain > 0:
return None
result = {}
for reg, count in plan.items():
if count > 0:
result[reg] = count
return result
def _get_count(self, cluster_id, action):
"""Get number of nodes to create or delete.
:param cluster_id: The ID of the target cluster.
:param action: The action object which triggered this policy check.
:return: An integer value which can be 1) positive - number of nodes
to create; 2) negative - number of nodes to delete; 3) 0 -
something wrong happened, and the policy check failed.
"""
if action.action == consts.CLUSTER_RESIZE:
if action.data.get('deletion', None):
return -action.data['deletion']['count']
elif action.data.get('creation', None):
return action.data['creation']['count']
db_cluster = co.Cluster.get(action.context, cluster_id)
res = scaleutils.parse_resize_params(action, db_cluster)
if res[0] == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = res[1]
LOG.error(res[1])
return 0
if action.data.get('deletion', None):
return -action.data['deletion']['count']
else:
return action.data['creation']['count']
if action.action == consts.CLUSTER_SCALE_IN:
pd = action.data.get('deletion', None)
if pd is None:
return -action.inputs.get('count', 1)
else:
return -pd.get('count', 1)
# CLUSTER_SCALE_OUT: an action that inflates the cluster
pd = action.data.get('creation', None)
if pd is None:
return action.inputs.get('count', 1)
else:
return pd.get('count', 1)
def pre_op(self, cluster_id, action):
"""Callback function when cluster membership is about to change.
:param cluster_id: ID of the target cluster.
:param action: The action that triggers this policy check.
:returns: ``None``.
"""
count = self._get_count(cluster_id, action)
if count == 0:
return
expand = True
if count < 0:
expand = False
count = -count
cluster = cm.Cluster.load(action.context, cluster_id)
kc = self._keystone(cluster)
regions_good = kc.validate_regions(self.regions.keys())
if len(regions_good) == 0:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('No region is found usable.')
LOG.error(_LE('No region is found usable.'))
return
regions = {}
for r in self.regions.items():
if r[0] in regions_good:
regions[r[0]] = r[1]
current_dist = cluster.get_region_distribution(regions_good)
result = self._create_plan(current_dist, regions, count, expand)
if not result:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('There is no feasible plan to '
'handle all nodes.')
LOG.error(_LE('There is no feasible plan to handle all nodes.'))
return
if expand:
if 'creation' not in action.data:
action.data['creation'] = {}
action.data['creation']['count'] = count
action.data['creation']['regions'] = result
else:
if 'deletion' not in action.data:
action.data['deletion'] = {}
action.data['deletion']['count'] = count
action.data['deletion']['regions'] = result
class ServerProfile(base.Profile):
'''Profile for an OpenStack Nova server.'''
KEYS = (
CONTEXT,
ADMIN_PASS,
AUTO_DISK_CONFIG,
AVAILABILITY_ZONE,
BLOCK_DEVICE_MAPPING, # BLOCK_DEVICE_MAPPING_V2,
CONFIG_DRIVE,
FLAVOR,
IMAGE,
KEY_NAME,
METADATA,
NAME,
NETWORKS,
PERSONALITY,
SECURITY_GROUPS,
TIMEOUT,
USER_DATA,
SCHEDULER_HINTS,
) = (
'context',
'adminPass',
'auto_disk_config',
'availability_zone',
'block_device_mapping',
# 'block_device_mapping_v2',
'config_drive',
'flavor',
'image',
'key_name',
'metadata',
'name',
'networks',
'personality',
'security_groups',
'timeout',
'user_data',
'scheduler_hints',
)
BDM_KEYS = (
BDM_DEVICE_NAME,
BDM_VOLUME_SIZE,
) = (
'device_name',
'volume_size',
)
NETWORK_KEYS = (
PORT,
FIXED_IP,
NETWORK,
) = (
'port',
'fixed-ip',
'network',
)
PERSONALITY_KEYS = (
PATH,
CONTENTS,
) = (
'path',
'contents',
)
SCHEDULER_HINTS_KEYS = (GROUP, ) = ('group', )
properties_schema = {
CONTEXT:
schema.Map(_('Customized security context for operating servers.'), ),
ADMIN_PASS:
schema.String(_('Password for the administrator account.'), ),
AUTO_DISK_CONFIG:
schema.Boolean(
_('Whether the disk partition is done automatically.'),
default=True,
),
AVAILABILITY_ZONE:
schema.String(
_('Name of availability zone for running the server.'), ),
BLOCK_DEVICE_MAPPING:
schema.List(
_('A list specifying the properties of block devices to be used '
'for this server.'),
schema=schema.Map(
_('A map specifying the properties of a block device to be '
'used by the server.'),
schema={
BDM_DEVICE_NAME:
schema.String(
_('Block device name, should be <=255 chars.'), ),
BDM_VOLUME_SIZE:
schema.Integer(_('Block device size in GB.'), ),
}),
),
CONFIG_DRIVE:
schema.Boolean(
_('Whether config drive should be enabled for the server.'), ),
FLAVOR:
schema.String(
_('ID of flavor used for the server.'),
required=True,
),
IMAGE:
schema.String(
# IMAGE is not required, because there could be BDM or BDMv2
# support and the corresponding settings effective
_('ID of image to be used for the new server.'), ),
KEY_NAME:
schema.String(_('Name of Nova keypair to be injected to server.'), ),
METADATA:
schema.Map(
_('A collection of key/value pairs to be associated with the '
'server created. Both key and value should be <=255 chars.'), ),
NAME:
schema.String(
_('Name of the server.'),
required=True,
),
NETWORKS:
schema.List(
_('List of networks for the server.'),
schema=schema.Map(
_('A map specifying the properties of a network for uses.'),
schema={
NETWORK:
schema.String(
_('Name or ID of network to create a port on.'), ),
PORT:
schema.String(_('Port ID to be used by the network.'), ),
FIXED_IP:
schema.String(_('Fixed IP to be used by the network.'), ),
},
),
),
PERSONALITY:
schema.List(
_('List of files to be injected into the server, where each.'),
schema=schema.Map(
_('A map specifying the path & contents for an injected '
'file.'),
schema={
PATH:
schema.String(
_('In-instance path for the file to be injected.'),
required=True,
),
CONTENTS:
schema.String(
_('Contents of the file to be injected.'),
required=True,
),
},
),
),
SCHEDULER_HINTS:
schema.Map(
_('A collection of key/value pairs to be associated with the '
'Scheduler hints. Both key and value should be <=255 chars.'), ),
SECURITY_GROUPS:
schema.List(
_('List of security groups.'),
schema=schema.String(
_('Name of a security group'),
required=True,
),
),
TIMEOUT:
schema.Integer(
_('Time out threshold for server operations.'),
default=120,
),
USER_DATA:
schema.String(_('User data to be exposed by the metadata server.'), ),
}
def __init__(self, type_name, name, **kwargs):
super(ServerProfile, self).__init__(type_name, name, **kwargs)
self._novaclient = None
self._neutronclient = None
self.server_id = None
def validate(self):
super(ServerProfile, self).validate()
if self.properties[self.TIMEOUT] > cfg.CONF.default_action_timeout:
suggest = cfg.CONF.default_action_timeout
err = _("Value of the 'timeout' property must be lower than the "
"upper limit (%s).") % suggest
raise exception.InvalidSpec(message=err)
def nova(self, obj):
'''Construct nova client based on object.
:param obj: Object for which the client is created. It is expected to
be None when retrieving an existing client. When creating
a client, it contains the user and project to be used.
'''
if self._novaclient is not None:
return self._novaclient
params = self._build_conn_params(obj.user, obj.project)
self._novaclient = driver_base.SenlinDriver().compute(params)
return self._novaclient
def neutron(self, obj):
'''Construct neutron client based on object.
:param obj: Object for which the client is created. It is expected to
be None when retrieving an existing client. When creating
a client, it contains the user and project to be used.
'''
if self._neutronclient is not None:
return self._neutronclient
params = self._build_conn_params(obj.user, obj.project)
self._neutronclient = driver_base.SenlinDriver().network(params)
return self._neutronclient
def do_validate(self, obj):
'''Validate if the spec has provided valid info for server creation.'''
return True
def do_create(self, obj):
'''Create a server using the given profile.'''
kwargs = {}
for key in self.KEYS:
# context is treated as connection parameters
if key == self.CONTEXT:
continue
if self.properties[key] is not None:
kwargs[key] = self.properties[key]
name_or_id = self.properties[self.IMAGE]
if name_or_id is not None:
image = self.nova(obj).image_get_by_name(name_or_id)
# wait for new version of openstacksdk to fix this
kwargs.pop(self.IMAGE)
kwargs['imageRef'] = image.id
flavor_id = self.properties[self.FLAVOR]
flavor = self.nova(obj).flavor_find(flavor_id, False)
# wait for new verson of openstacksdk to fix this
kwargs.pop(self.FLAVOR)
kwargs['flavorRef'] = flavor.id
if obj.name is not None:
kwargs[self.NAME] = obj.name + '-' + utils.random_name(8)
metadata = self.properties[self.METADATA] or {}
if obj.cluster_id is not None:
metadata['cluster'] = obj.cluster_id
kwargs['metadata'] = metadata
scheduler_hint = self.properties[self.SCHEDULER_HINTS]
if scheduler_hint is not None:
kwargs['scheduler_hints'] = scheduler_hint
user_data = self.properties[self.USER_DATA]
if user_data is not None:
ud = encodeutils.safe_encode(user_data)
kwargs['user_data'] = encodeutils.safe_decode(base64.b64encode(ud))
networks = self.properties[self.NETWORKS]
if networks is not None:
for network in networks:
net_name_id = network.get(self.NETWORK)
if net_name_id:
res = self.neutron(obj).network_get(net_name_id)
network['uuid'] = res.id
del network[self.NETWORK]
if network['port'] is None:
del network['port']
if network['fixed-ip'] is None:
del network['fixed-ip']
kwargs['networks'] = networks
LOG.info('Creating server: %s' % kwargs)
try:
server = self.nova(obj).server_create(**kwargs)
self.nova(obj).wait_for_server(server)
except Exception as ex:
LOG.exception(_('Failed in creating server: %s'),
six.text_type(ex))
return False
self.server_id = server.id
return server.id
def do_delete(self, obj):
self.server_id = obj.physical_id
if not obj.physical_id:
return True
try:
self.nova(obj).server_delete(self.server_id)
self.nova(obj).wait_for_server_delete(self.server_id)
except Exception as ex:
LOG.error('Error: %s' % six.text_type(ex))
return False
return True
def do_update(self, obj, new_profile, **params):
'''Perform update on the server.
:param obj: the server to operate on
:param new_profile: the new profile for the server.
:param params: a dictionary of optional parameters.
'''
self.server_id = obj.physical_id
if not self.server_id:
return True
# TODO(anyone): Validate the new profile
# TODO(anyone): Do update based on the fields provided.
# self.nova(obj).server_update(**fields)
return True
def do_check(self, obj):
# TODO(anyone): Check server status
return True
def do_get_details(self, obj):
if obj.physical_id is None or obj.physical_id == '':
return {}
server = self.nova(obj).server_get(obj.physical_id)
if server is None:
return {}
details = {
'id': server.id,
'name': server.name,
'access_ipv4': server.access_ipv4,
'access_ipv6': server.access_ipv6,
'addresses': server.addresses,
'created_at': server.created_at,
'flavor': server.flavor,
'host_id': server.host_id,
'image': server.image,
'links': server.links,
'metadata': server.metadata,
'progress': server.progress,
'project_id': server.project_id,
'status': server.status,
'updated_at': server.updated_at,
'user_id': server.user_id,
}
return details
def do_join(self, obj, cluster_id):
if not obj.physical_id:
return {}
metadata = self.nova(obj).server_metadata_get(
server_id=obj.physical_id) or {}
metadata['cluster'] = cluster_id
return self.nova(obj).server_metadata_update(**metadata)
def do_leave(self, obj):
if not obj.physical_id:
return
metadata = self.nova(obj).server_metadata_get(
server_id=obj.physical_id) or {}
if 'cluster' in metadata:
del metadata['cluster']
return self.nova(obj).server_metadata_update(**metadata)
class HealthPolicy(base.Policy):
'''Policy for health management of a cluster.'''
VERSION = '1.0'
PRIORITY = 600
TARGET = [
('BEFORE', consts.CLUSTER_CHECK),
('BEFORE', consts.CLUSTER_RECOVER),
]
# Should be ANY if profile provides health check support?
PROFILE_TYPE = [
'os.nova.server',
'os.heat.stack',
]
KEYS = (DETECTION, RECOVERY) = ('detection', 'recovery')
_DETECTION_KEYS = (
DETECTION_TYPE,
DETECTION_OPTIONS,
) = ('type', 'options')
DETECTION_TYPES = (
VM_LIFECYCLE_EVENTS,
NODE_STATUS_POLLING,
LB_STATUS_POLLING,
) = (
'VM_LIFECYCLE_EVENTS',
'NODE_STATUS_POLLING',
'LB_STATUS_POLLING',
)
_DETECTION_OPTIONS = (DETECTION_INTERVAL, ) = ('interval', )
_RECOVERY_KEYS = (RECOVERY_ACTIONS, RECOVERY_FENCING) = ('actions',
'fencing')
RECOVERY_ACTION_VALUES = (REBOOT, REBUILD, MIGRATE, EVACUATE, RECREATE,
NOP) = (
'REBOOT',
'REBUILD',
'MIGRATE',
'EVACUATE',
'RECREATE',
'NOP',
)
FENCING_OPTION_VALUES = (
COMPUTE,
STORAGE,
NETWORK,
) = ('COMPUTE', 'STORAGE', 'NETWORK')
properties_schema = {
DETECTION:
schema.Map(
_('Policy aspect for node failure detection.'),
schema={
DETECTION_TYPE:
schema.String(
_('Type of node failure detection.'),
constraints=[
constraints.AllowedValues(DETECTION_TYPES),
],
required=True,
),
DETECTION_OPTIONS:
schema.Map(
schema={
DETECTION_INTERVAL:
schema.Integer(
_("Number of seconds between pollings. Only "
"required when type is 'NODE_STATUS_POLLING'."),
default=60,
),
}),
},
required=True,
),
RECOVERY:
schema.Map(
_('Policy aspect for node failure recovery.'),
schema={
RECOVERY_ACTIONS:
schema.List(
_('List of actions to try for node recovery.'),
schema=schema.String(
_('Action to try for node recovery.'),
constraints=[
constraints.AllowedValues(RECOVERY_ACTION_VALUES),
]),
),
RECOVERY_FENCING:
schema.List(
_('List of services to be fenced.'),
schema=schema.String(
_('Service to be fenced.'),
constraints=[
constraints.AllowedValues(FENCING_OPTION_VALUES),
],
),
),
}),
}
def __init__(self, name, spec, **kwargs):
super(HealthPolicy, self).__init__(name, spec, **kwargs)
self.check_type = self.properties[self.DETECTION][self.DETECTION_TYPE]
options = self.properties[self.DETECTION][self.DETECTION_OPTIONS]
self.interval = options[self.DETECTION_INTERVAL]
recover_settings = self.properties[self.RECOVERY]
self.recover_actions = recover_settings[self.RECOVERY_ACTIONS]
def attach(self, cluster):
""""Hook for policy attach.
Register the cluster for health management.
"""
kwargs = {
'check_type': self.check_type,
'interval': self.interval,
'params': {},
}
health_manager.register(cluster.id, engine_id=None, **kwargs)
data = {
'check_type': self.check_type,
'interval': self.interval,
}
return True, self._build_policy_data(data)
def detach(self, cluster):
'''Hook for policy detach.
Unregister the cluster for health management.
'''
health_manager.unregister(cluster.id)
return True, ''
def pre_op(self, cluster_id, action, **args):
# Ignore actions that are not required to be processed at this stage
if action.action != consts.CLUSTER_RECOVER:
return True
pd = {
'recover_action': self.recover_actions[0],
}
action.data.update({'health': pd})
action.store(action.context)
return True
def post_op(self, cluster_id, action, **args):
# Ignore irrelevant action here
if action.action not in (consts.CLUSTER_CHECK, consts.CLUSTER_RECOVER):
return True
# TODO(anyone): subscribe to vm-lifecycle-events for the specified VM
# or add vm to the list of VM status polling
return True
class ThresholdAlarm(Alarm):
rule_schema = {
METER_NAME:
schema.String(
_('Name of a meter to evaluate against.'),
required=True,
),
OPERATOR:
schema.String(
_('Comparison operator for evaluation.'),
constraints=[
constraints.AllowedValues(OPERATOR_VALUES),
],
default=OP_EQUAL,
),
THRESHOLD:
schema.Number(_('Threshold for evaluation.'), required=True),
PERIOD:
schema.Integer(
_('Length of every evaluation period in seconds.'),
default=60,
),
EVALUATIONS:
schema.Integer(
_('Number of periods to evaluate over.'),
default=1,
),
STATISTIC:
schema.String(
_('Statistics to evaluate. Must be one of %s, default to "avg".') %
list(STATISTIC_VALUES),
constraints=[
constraints.AllowedValues(STATISTIC_VALUES),
],
default=SV_AVG,
),
QUERY:
schema.List(
_('The query to find the dat afor computing statistics.'),
schema=schema.Map(
schema={
Q_FIELD:
schema.String(
_('A field of a meter to query.'),
required=True,
),
Q_OP:
schema.String(
_('An operator for meter comparison.'),
default='==',
),
Q_VALUE:
schema.String(
_('A value for comparison.'),
required=True,
)
}),
)
}
def __init__(self, name, spec, **kwargs):
super(ThresholdAlarm, self).__init__(name, spec, **kwargs)
rule_spec = spec.get('rule', {})
self.rule = schema.Spec(self.rule_schema, rule_spec)
self.namespace = 'threshold'
class Alarm(base.Trigger):
# time constraints
alarm_schema = {
REPEAT:
schema.Boolean(
_('Whether the actions should be re-triggered on each evaluation '
'cycle. Default to False.'),
default=False,
),
TIME_CONSTRAINTS:
schema.List(schema=schema.Map(
_('A map of time constraint settings.'),
schema={
NAME:
schema.String(_('Name of the time constraint.'), ),
TC_DESCRIPTION:
schema.String(_('A description of the time constraint.'), ),
TC_START:
schema.String(
_('Start point of the time constraint, expressed as a '
'string in cron expression format.'),
required=True,
),
TC_DURATION:
schema.Integer(
_('How long the constraint should last, in seconds.'),
required=True,
),
TC_TIMEZONE:
schema.String(
_('Time zone of the constraint.'),
default='',
),
},
), )
}
def __init__(self, name, spec, **kwargs):
super(Alarm, self).__init__(name, spec, **kwargs)
self.alarm_properties = schema.Spec(self.alarm_schema, spec)
self.namespace = 'default'
self.rule = None
def validate(self):
# validate cron expression if specified
if TIME_CONSTRAINTS in self.spec:
tcs = self.alarm_properties[TIME_CONSTRAINTS]
for tc in tcs:
exp = tc.get(TC_START, '')
try:
croniter.croniter(exp)
except Exception as ex:
msg = _("Invalid cron expression specified for property "
"'%(property)s' (%(exp)s): %(ex)s") % {
'property': TC_START,
'exp': exp,
'ex': six.text_type(ex)
}
raise exc.InvalidSpec(message=msg)
tz = tc.get(TC_TIMEZONE, '')
try:
pytz.timezone(tz)
except Exception as ex:
msg = _("Invalid timezone value specified for property "
"'%(property)s' (%(tz)s): %(ex)s") % {
'property': TC_TIMEZONE,
'tz': tz,
'ex': six.text_type(ex)
}
raise exc.InvalidSpec(message=msg)
def create(self, ctx, **kwargs):
"""Create an alarm for a cluster.
:param name: The name for the alarm.
:param urls: A list of URLs for webhooks to be triggered.
:returns: A dict containing properties of the alarm.
"""
self.ok_actions = kwargs.get(OK_ACTIONS, [])
self.alarm_actions = kwargs.get(ALARM_ACTIONS, [])
self.insufficient_data_actions = kwargs.get(INSUFFICIENT_DATA_ACTIONS,
[])
rule_name = self.namespace + '_rule'
rule_data = dict((k, v) for k, v in self.rule.items())
params = {
NAME: self.name,
DESCRIPTION: self.desc,
TYPE: self.namespace,
STATE: self.state,
SEVERITY: self.severity,
ENABLED: self.enabled,
OK_ACTIONS: self.ok_actions,
ALARM_ACTIONS: self.alarm_actions,
INSUFFICIENT_DATA_ACTIONS: self.insufficient_data_actions,
TIME_CONSTRAINTS: self.alarm_properties[TIME_CONSTRAINTS],
REPEAT: self.alarm_properties[REPEAT],
rule_name: rule_data,
}
try:
cc = driver_base.SenlinDriver().telemetry(ctx.to_dict())
alarm = cc.alarm_create(**params)
self.physical_id = alarm.id
self.store(ctx)
return True, alarm.to_dict()
except exc.SenlinException as ex:
return False, six.text_type(ex)
def delete(self, ctx, identifier):
"""Delete an alarm.
:param identifier: This must be an alarm ID.
"""
try:
cc = driver_base.SenlinDriver().telemetry(ctx)
res = cc.alarm_delete(identifier, True)
return True, res
except exc.InternalError as ex:
return False, six.text_type(ex)
def update(self, identifier, values):
return NotImplemented
class HealthPolicy(base.Policy):
"""Policy for health management of a cluster."""
VERSION = '1.0'
PRIORITY = 600
TARGET = [
('BEFORE', consts.CLUSTER_CHECK),
('BEFORE', consts.CLUSTER_DEL_NODES),
('BEFORE', consts.CLUSTER_RECOVER),
('BEFORE', consts.CLUSTER_RESIZE),
('BEFORE', consts.CLUSTER_SCALE_IN),
('BEFORE', consts.NODE_DELETE),
('AFTER', consts.CLUSTER_DEL_NODES),
('AFTER', consts.CLUSTER_SCALE_IN),
('AFTER', consts.CLUSTER_RESIZE),
('AFTER', consts.NODE_DELETE),
]
# Should be ANY if profile provides health check support?
PROFILE_TYPE = [
'os.nova.server',
'os.heat.stack',
]
KEYS = (DETECTION, RECOVERY) = ('detection', 'recovery')
_DETECTION_KEYS = (
DETECTION_TYPE,
DETECTION_OPTIONS,
) = ('type', 'options')
_DETECTION_OPTIONS = (DETECTION_INTERVAL, ) = ('interval', )
_RECOVERY_KEYS = (RECOVERY_ACTIONS, RECOVERY_FENCING) = ('actions',
'fencing')
RECOVERY_ACTION_VALUES = (
REBUILD,
RECREATE,
# REBOOT, MIGRATE, EVACUATE,
) = (
"REBUILD",
"RECREATE",
# 'REBOOT', 'MIGRATE', 'EVACUATE',
)
FENCING_OPTION_VALUES = (
COMPUTE,
# STORAGE, NETWORK,
) = (
'COMPUTE',
# 'STORAGE', 'NETWORK'
)
properties_schema = {
DETECTION:
schema.Map(
_('Policy aspect for node failure detection.'),
schema={
DETECTION_TYPE:
schema.String(
_('Type of node failure detection.'),
constraints=[
constraints.AllowedValues(consts.DETECTION_TYPES),
],
required=True,
),
DETECTION_OPTIONS:
schema.Map(
schema={
DETECTION_INTERVAL:
schema.Integer(
_("Number of seconds between pollings. Only "
"required when type is 'NODE_STATUS_POLLING'."),
default=60,
),
}),
},
required=True,
),
RECOVERY:
schema.Map(
_('Policy aspect for node failure recovery.'),
schema={
RECOVERY_ACTIONS:
schema.List(
_('List of actions to try for node recovery.'),
schema=schema.String(
_('Action to try for node recovery.'),
constraints=[
constraints.AllowedValues(RECOVERY_ACTION_VALUES),
]),
),
RECOVERY_FENCING:
schema.List(
_('List of services to be fenced.'),
schema=schema.String(
_('Service to be fenced.'),
constraints=[
constraints.AllowedValues(FENCING_OPTION_VALUES),
],
),
),
}),
}
def __init__(self, name, spec, **kwargs):
super(HealthPolicy, self).__init__(name, spec, **kwargs)
self.check_type = self.properties[self.DETECTION][self.DETECTION_TYPE]
options = self.properties[self.DETECTION][self.DETECTION_OPTIONS]
self.interval = options[self.DETECTION_INTERVAL]
recover_settings = self.properties[self.RECOVERY]
self.recover_actions = recover_settings[self.RECOVERY_ACTIONS]
self.fencing_types = recover_settings[self.RECOVERY_FENCING]
def attach(self, cluster):
""""Hook for policy attach.
Register the cluster for health management.
:param cluster: The target cluster.
:return: A tuple comprising execution result and policy data.
"""
kwargs = {
'check_type': self.check_type,
'interval': self.interval,
'params': {},
}
health_manager.register(cluster.id, engine_id=None, **kwargs)
data = {
'check_type': self.check_type,
'interval': self.interval,
}
return True, self._build_policy_data(data)
def detach(self, cluster):
"""Hook for policy detach.
Unregister the cluster for health management.
:param cluster: The target cluster.
:returns: A tuple comprising the execution result and reason.
"""
health_manager.unregister(cluster.id)
return True, ''
def pre_op(self, cluster_id, action, **args):
"""Hook before action execution.
One of the task for this routine is to disable health policy if the
action is a request that will shrink the cluster. The reason is that
the policy may attempt to recover nodes that are to be deleted.
:param cluster_id: The ID of the target cluster.
:param action: The action to be examined.
:param kwargs args: Other keyword arguments to be checked.
:returns: Boolean indicating whether the checking passed.
"""
if action.action in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES,
consts.NODE_DELETE):
health_manager.disable(cluster_id)
return True
if action.action == consts.CLUSTER_RESIZE:
deletion = action.data.get('deletion', None)
if deletion:
health_manager.disable(cluster_id)
return True
db_cluster = co.Cluster.get(action.context, cluster_id)
current = no.Node.count_by_cluster(action.context, cluster_id)
res, reason = scaleutils.parse_resize_params(
action, db_cluster, current)
if res == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = reason
return False
if action.data.get('deletion', None):
health_manager.disable(cluster_id)
return True
pd = {
'recover_action': self.recover_actions,
'fencing': self.fencing_types,
}
action.data.update({'health': pd})
action.store(action.context)
return True
def post_op(self, cluster_id, action, **args):
"""Hook before action execution.
One of the task for this routine is to re-enable health policy if the
action is a request that will shrink the cluster thus the policy has
been temporarily disabled.
:param cluster_id: The ID of the target cluster.
:param action: The action to be examined.
:param kwargs args: Other keyword arguments to be checked.
:returns: Boolean indicating whether the checking passed.
"""
if action.action in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES,
consts.NODE_DELETE):
health_manager.enable(cluster_id)
return True
if action.action == consts.CLUSTER_RESIZE:
deletion = action.data.get('deletion', None)
if deletion:
health_manager.enable(cluster_id)
return True
db_cluster = co.Cluster.get(action.context, cluster_id)
current = no.Node.count_by_cluster(action.context, cluster_id)
res, reason = scaleutils.parse_resize_params(
action, db_cluster, current)
if res == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = reason
return False
if action.data.get('deletion', None):
health_manager.enable(cluster_id)
return True
return True
class HealthPolicy(base.Policy):
'''Policy for health checking for members of a cluster.'''
VERSION = '1.0'
TARGET = [
('AFTER', consts.CLUSTER_ADD_NODES),
('AFTER', consts.CLUSTER_SCALE_OUT),
('BEFORE', consts.CLUSTER_DEL_NODES),
('BEFORE', consts.CLUSTER_SCALE_IN),
]
# Should be ANY if profile provides health check support?
PROFILE_TYPE = [
'os.nova.server',
'os.heat.stack',
'AWS.AutoScaling.LaunchConfiguration',
]
KEYS = (DETECTION, RECOVERY) = ('detection', 'recovery')
_DETECTION_KEYS = (
DETECTION_TYPE,
DETECTION_OPTIONS,
) = ('type', 'options')
DETECTION_TYPES = (
VM_LIFECYCLE_EVENTS,
NODE_STATUS_POLLING,
LB_STATUS_POLLING,
) = (
'VM_LIFECYCLE_EVENTS',
'NODE_STATUS_POLLING',
'LB_STATUS_POLLING',
)
_DETECTION_OPTIONS = (DETECTION_INTERVAL, ) = ('interval', )
_RECOVERY_KEYS = (RECOVERY_ACTIONS, RECOVERY_FENCING) = ('actions',
'fencing')
RECOVERY_ACTION_VALUES = (REBOOT, REBUILD, MIGRATE, EVACUATE, RECREATE,
NOP) = (
'REBOOT',
'REBUILD',
'MIGRATE',
'EVACUATE',
'RECREATE',
'NOP',
)
FENCING_OPTION_VALUES = (
COMPUTE,
STORAGE,
NETWORK,
) = ('COMPUTE', 'STORAGE', 'NETWORK')
properties_schema = {
DETECTION:
schema.Map(
_('Policy aspect for node failure detection.'),
schema={
DETECTION_TYPE:
schema.String(
_('Type of node failure detection.'),
constraints=[
constraints.AllowedValues(DETECTION_TYPES),
],
required=True,
),
DETECTION_OPTIONS:
schema.Map(
schema={
DETECTION_INTERVAL:
schema.Integer(
_("Number of seconds between pollings. Only "
"required when type is 'NODE_STATUS_POLLING'."),
default=60,
),
}),
},
required=True,
),
RECOVERY:
schema.Map(
_('Policy aspect for node failure recovery.'),
schema={
RECOVERY_ACTIONS:
schema.List(
_('List of actions to try for node recovery.'),
schema=schema.String(
_('Action to try for node recovery.'),
constraints=[
constraints.AllowedValues(RECOVERY_ACTION_VALUES),
]),
),
RECOVERY_FENCING:
schema.List(
_('List of services to be fenced.'),
schema=schema.String(
_('Service to be fenced.'),
constraints=[
constraints.AllowedValues(FENCING_OPTION_VALUES),
],
),
),
}),
}
def __init__(self, name, spec, **kwargs):
super(HealthPolicy, self).__init__(name, spec, kwargs)
self.check_type = self.properties[self.DETECTION][self.DETECTION_TYPE]
options = self.properties[self.DETECTION][self.DETECTION_OPTIONS]
self.interval = options[self.DETECTION_INTERVAL]
def attach(self, cluster):
'''Hook for policy attach.
Initialize the health check mechanism for existing nodes in cluster.
'''
data = {
'type': self.check_type,
'interval': self.interval,
'counter': 0,
}
# TODO(anyone): register cluster for periodic checking
return True, self._build_policy_data(data)
def detach(self, cluster):
'''Hook for policy detach.
Deinitialize the health check mechanism (for the cluster).
'''
# TODO(anyone): deregister cluster from periodic checking
return True, ''
def pre_op(self, cluster_id, action, **args):
# Ignore actions that are not required to be processed at this stage
if action not in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES):
return True
# TODO(anyone): Unsubscribe nodes from backend health monitoring
# infrastructure
return True
def post_op(self, cluster_id, action, **args):
# Ignore irrelevant action here
if action not in (consts.CLUSTER_SCALE_OUT, consts.CLUSTER_ADD_NODES):
return True
# TODO(anyone): subscribe to vm-lifecycle-events for the specified VM
# or add vm to the list of VM status polling
return True
@periodic_task.periodic_task
def health_check(self):
if not self.detect_enabled:
return
if (self.detect_counter < self.detect_interval):
self.detect_counter += 1
return
self.detect_counter = 0
failures = 0
for n in self.rt['nodes']:
if (n.rt.profile.do_check(n)):
continue
failures += 1
# TODO(Anyone): How to enforce the HA policy?
pass
def test_basic(self):
sot = schema.List('desc')
self.assertEqual('List', sot['type'])
self.assertEqual('desc', sot['description'])
class ZonePlacementPolicy(base.Policy):
"""Policy for placing members of a cluster across availability zones."""
VERSION = '1.0'
PRIORITY = 300
TARGET = [
('BEFORE', consts.CLUSTER_SCALE_OUT),
('BEFORE', consts.CLUSTER_SCALE_IN),
('BEFORE', consts.CLUSTER_RESIZE),
]
PROFILE_TYPE = [
'os.nova.server-1.0',
]
KEYS = (
ZONES,
) = (
'zones',
)
_AZ_KEYS = (
ZONE_NAME, ZONE_WEIGHT,
) = (
'name', 'weight',
)
properties_schema = {
ZONES: schema.List(
_('List of availability zones to choose from.'),
schema=schema.Map(
_('An availability zone as candidate.'),
schema={
ZONE_NAME: schema.String(
_('Name of an availability zone.'),
),
ZONE_WEIGHT: schema.Integer(
_('Weight of the availability zone (default is 100).'),
default=100,
required=False,
)
},
),
),
}
def __init__(self, name, spec, **kwargs):
super(ZonePlacementPolicy, self).__init__(name, spec, **kwargs)
self._novaclient = None
self.zones = dict((z[self.ZONE_NAME], z[self.ZONE_WEIGHT])
for z in self.properties.get(self.ZONES))
def _nova(self, obj):
"""Construct nova client based on object.
:param obj: Object for which the client is created. It is expected to
be None when retrieving an existing client. When creating
a client, it contains the user and project to be used.
"""
if self._novaclient is not None:
return self._novaclient
params = self._build_conn_params(obj)
self._novaclient = driver_base.SenlinDriver().compute(params)
return self._novaclient
def _create_plan(self, current, zones, count, expand):
"""Compute a placement plan based on the weights of AZs.
:param current: Distribution of existing nodes.
:returns: A dict that contains a placement plan.
"""
# sort candidate zones by distribution and covert it into a list
candidates = sorted(zones.items(), key=operator.itemgetter(1),
reverse=expand)
sum_weight = sum(zones.values())
if expand:
total = count + sum(current.values())
else:
total = sum(current.values()) - count
remain = count
plan = dict.fromkeys(zones.keys(), 0)
for i in range(len(zones)):
zone = candidates[i][0]
weight = candidates[i][1]
q = total * weight / float(sum_weight)
if expand:
quota = int(math.ceil(q))
headroom = quota - current[zone]
else:
quota = int(math.floor(q))
headroom = current[zone] - quota
if headroom <= 0:
continue
if headroom < remain:
plan[zone] = headroom
remain -= headroom
else:
plan[zone] = remain if remain > 0 else 0
remain = 0
break
if remain > 0:
return None
# filter out zero values
result = {}
for z, c in plan.items():
if c > 0:
result[z] = c
return result
def _get_count(self, cluster_id, action):
"""Get number of nodes to create or delete.
:param cluster_id: The ID of the target cluster.
:param action: The action object which triggered this policy check.
:return: An integer value which can be 1) positive - number of nodes
to create; 2) negative - number of nodes to delete; 3) 0 -
something wrong happened, and the policy check failed.
"""
if action.action == consts.CLUSTER_RESIZE:
if action.data.get('deletion', None):
return -action.data['deletion']['count']
elif action.data.get('creation', None):
return action.data['creation']['count']
db_cluster = db_api.cluster_get(action.context, cluster_id)
res = scaleutils.parse_resize_params(action, db_cluster)
if res[0] == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = res[1]
LOG.error(res[1])
return 0
if action.data.get('deletion', None):
return -action.data['deletion']['count']
else:
return action.data['creation']['count']
if action.action == consts.CLUSTER_SCALE_IN:
pd = action.data.get('deletion', None)
if pd is None:
return -action.inputs.get('count', 1)
else:
return -pd.get('count', 1)
# CLUSTER_SCALE_OUT: an action that inflates the cluster
pd = action.data.get('creation', None)
if pd is None:
return action.inputs.get('count', 1)
else:
return pd.get('count', 1)
def pre_op(self, cluster_id, action):
"""Callback function when cluster membership is about to change.
:param cluster_id: ID of the target cluster.
:param action: The action that triggers this policy check.
"""
count = self._get_count(cluster_id, action)
if count == 0:
return
expand = True
if count < 0:
expand = False
count = -count
cluster = cluster_mod.Cluster.load(action.context, cluster_id)
nc = self._nova(cluster)
zones_good = nc.validate_azs(self.zones.keys())
if len(zones_good) == 0:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('No availability zone found available.')
LOG.error(_LE('No availability zone found available.'))
return
zones = {}
for z, w in self.zones.items():
if z in zones_good:
zones[z] = w
current = cluster.get_zone_distribution(action.context, zones.keys())
result = self._create_plan(current, zones, count, expand)
if not result:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = _('There is no feasible plan to '
'handle all nodes.')
LOG.error(_LE('There is no feasible plan to handle all nodes.'))
return
if expand:
if 'creation' not in action.data:
action.data['creation'] = {}
action.data['creation']['count'] = count
action.data['creation']['zones'] = result
else:
if 'deletion' not in action.data:
action.data['deletion'] = {}
action.data['deletion']['count'] = count
action.data['deletion']['zones'] = result
def test__get_children(self):
sot = schema.List('desc', schema=schema.String())
res = sot._get_children(['v1', 'v2'], [0, 1])
self.assertEqual(['v1', 'v2'], list(res))
class ServerProfile(base.Profile):
"""Profile for an OpenStack Nova server."""
KEYS = (
CONTEXT,
ADMIN_PASS,
AUTO_DISK_CONFIG,
AVAILABILITY_ZONE,
BLOCK_DEVICE_MAPPING_V2,
CONFIG_DRIVE,
FLAVOR,
IMAGE,
KEY_NAME,
METADATA,
NAME,
NETWORKS,
PERSONALITY,
SECURITY_GROUPS,
USER_DATA,
SCHEDULER_HINTS,
) = (
'context',
'admin_pass',
'auto_disk_config',
'availability_zone',
'block_device_mapping_v2',
'config_drive',
'flavor',
'image',
'key_name',
'metadata',
'name',
'networks',
'personality',
'security_groups',
'user_data',
'scheduler_hints',
)
BDM2_KEYS = (
BDM2_UUID,
BDM2_SOURCE_TYPE,
BDM2_DESTINATION_TYPE,
BDM2_DISK_BUS,
BDM2_DEVICE_NAME,
BDM2_VOLUME_SIZE,
BDM2_GUEST_FORMAT,
BDM2_BOOT_INDEX,
BDM2_DEVICE_TYPE,
BDM2_DELETE_ON_TERMINATION,
) = (
'uuid',
'source_type',
'destination_type',
'disk_bus',
'device_name',
'volume_size',
'guest_format',
'boot_index',
'device_type',
'delete_on_termination',
)
NETWORK_KEYS = (
PORT,
FIXED_IP,
NETWORK,
) = (
'port',
'fixed_ip',
'network',
)
PERSONALITY_KEYS = (
PATH,
CONTENTS,
) = (
'path',
'contents',
)
SCHEDULER_HINTS_KEYS = (GROUP, ) = ('group', )
properties_schema = {
CONTEXT:
schema.Map(_('Customized security context for operating servers.'), ),
ADMIN_PASS:
schema.String(_('Password for the administrator account.'), ),
AUTO_DISK_CONFIG:
schema.Boolean(
_('Whether the disk partition is done automatically.'),
default=True,
),
AVAILABILITY_ZONE:
schema.String(
_('Name of availability zone for running the server.'), ),
BLOCK_DEVICE_MAPPING_V2:
schema.List(
_('A list specifying the properties of block devices to be used '
'for this server.'),
schema=schema.Map(
_('A map specifying the properties of a block device to be '
'used by the server.'),
schema={
BDM2_UUID:
schema.String(
_('ID of the source image, snapshot or volume'), ),
BDM2_SOURCE_TYPE:
schema.String(
_('Volume source type, should be image, snapshot, '
'volume or blank'),
required=True,
),
BDM2_DESTINATION_TYPE:
schema.String(
_('Volume destination type, should be volume or '
'local'),
required=True,
),
BDM2_DISK_BUS:
schema.String(_('Bus of the device.'), ),
BDM2_DEVICE_NAME:
schema.String(
_('Name of the device(e.g. vda, xda, ....).'), ),
BDM2_VOLUME_SIZE:
schema.Integer(
_('Size of the block device in MB(for swap) and '
'in GB(for other formats)'),
required=True,
),
BDM2_GUEST_FORMAT:
schema.String(
_('Specifies the disk file system format(e.g. swap, '
'ephemeral, ...).'), ),
BDM2_BOOT_INDEX:
schema.Integer(_('Define the boot order of the device'), ),
BDM2_DEVICE_TYPE:
schema.String(
_('Type of the device(e.g. disk, cdrom, ...).'), ),
BDM2_DELETE_ON_TERMINATION:
schema.Boolean(
_('Whether to delete the volume when the server '
'stops.'), ),
}),
),
CONFIG_DRIVE:
schema.Boolean(
_('Whether config drive should be enabled for the server.'), ),
FLAVOR:
schema.String(
_('ID of flavor used for the server.'),
required=True,
updatable=True,
),
IMAGE:
schema.String(
# IMAGE is not required, because there could be BDM or BDMv2
# support and the corresponding settings effective
_('ID of image to be used for the new server.'),
updatable=True,
),
KEY_NAME:
schema.String(_('Name of Nova keypair to be injected to server.'), ),
METADATA:
schema.Map(
_('A collection of key/value pairs to be associated with the '
'server created. Both key and value should be <=255 chars.'),
updatable=True,
),
NAME:
schema.String(
_('Name of the server. When omitted, the node name will be used.'),
updatable=True,
),
NETWORKS:
schema.List(
_('List of networks for the server.'),
schema=schema.Map(
_('A map specifying the properties of a network for uses.'),
schema={
NETWORK:
schema.String(
_('Name or ID of network to create a port on.'), ),
PORT:
schema.String(_('Port ID to be used by the network.'), ),
FIXED_IP:
schema.String(_('Fixed IP to be used by the network.'), ),
},
),
updatable=True,
),
PERSONALITY:
schema.List(
_('List of files to be injected into the server, where each.'),
schema=schema.Map(
_('A map specifying the path & contents for an injected '
'file.'),
schema={
PATH:
schema.String(
_('In-instance path for the file to be injected.'),
required=True,
),
CONTENTS:
schema.String(
_('Contents of the file to be injected.'),
required=True,
),
},
),
),
SCHEDULER_HINTS:
schema.Map(
_('A collection of key/value pairs to be associated with the '
'Scheduler hints. Both key and value should be <=255 chars.'), ),
SECURITY_GROUPS:
schema.List(
_('List of security groups.'),
schema=schema.String(
_('Name of a security group'),
required=True,
),
),
USER_DATA:
schema.String(_('User data to be exposed by the metadata server.'), ),
}
OP_NAMES = (
OP_REBOOT,
OP_CHANGE_PASSWORD,
) = (
'reboot',
'change_password',
)
REBOOT_TYPE = 'type'
REBOOT_TYPES = (REBOOT_SOFT, REBOOT_HARD) = ('SOFT', 'HARD')
ADMIN_PASSWORD = '******'
OPERATIONS = {
OP_REBOOT:
schema.Operation(
_("Reboot the nova server."),
schema={
REBOOT_TYPE:
schema.StringParam(
_("Type of reboot which can be 'SOFT' or 'HARD'."),
default=REBOOT_SOFT,
constraints=[
constraints.AllowedValues(REBOOT_TYPES),
])
}),
OP_CHANGE_PASSWORD:
schema.Operation(_("Change the administrator password."),
schema={
ADMIN_PASSWORD:
schema.StringParam(
_("New password for the administrator."))
}),
}
def __init__(self, type_name, name, **kwargs):
super(ServerProfile, self).__init__(type_name, name, **kwargs)
self.server_id = None
def _validate_az(self, obj, az_name, reason=None):
try:
res = self.compute(obj).validate_azs([az_name])
except exc.InternalError as ex:
if reason == 'create':
raise exc.EResourceCreation(type='server',
message=six.text_type(ex))
else:
raise
if not res:
msg = _("The specified %(key)s '%(value)s' could not be found") % {
'key': self.AVAILABILITY_ZONE,
'value': az_name
}
if reason == 'create':
raise exc.EResourceCreation(type='server', message=msg)
else:
raise exc.InvalidSpec(message=msg)
return az_name
def _validate_flavor(self, obj, name_or_id, reason=None):
flavor = None
msg = ''
try:
flavor = self.compute(obj).flavor_find(name_or_id, False)
except exc.InternalError as ex:
msg = six.text_type(ex)
if reason is None: # reaons is 'validate'
if ex.code == 404:
msg = _(
"The specified %(k)s '%(v)s' could not be found.") % {
'k': self.FLAVOR,
'v': name_or_id
}
raise exc.InvalidSpec(message=msg)
else:
raise
if flavor is not None:
if not flavor.is_disabled:
return flavor
msg = _("The specified %(k)s '%(v)s' is disabled") % {
'k': self.FLAVOR,
'v': name_or_id
}
if reason == 'create':
raise exc.EResourceCreation(type='server', message=msg)
elif reason == 'update':
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=msg)
else:
raise exc.InvalidSpec(message=msg)
def _validate_image(self, obj, name_or_id, reason=None):
try:
return self.compute(obj).image_find(name_or_id, False)
except exc.InternalError as ex:
if reason == 'create':
raise exc.EResourceCreation(type='server',
message=six.text_type(ex))
elif reason == 'update':
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
elif ex.code == 404:
msg = _("The specified %(k)s '%(v)s' could not be found.") % {
'k': self.IMAGE,
'v': name_or_id
}
raise exc.InvalidSpec(message=msg)
else:
raise
def _validate_keypair(self, obj, name_or_id, reason=None):
try:
return self.compute(obj).keypair_find(name_or_id, False)
except exc.InternalError as ex:
if reason == 'create':
raise exc.EResourceCreation(type='server',
message=six.text_type(ex))
elif reason == 'update':
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
elif ex.code == 404:
msg = _("The specified %(k)s '%(v)s' could not be found.") % {
'k': self.KEY_NAME,
'v': name_or_id
}
raise exc.InvalidSpec(message=msg)
else:
raise
def do_validate(self, obj):
"""Validate if the spec has provided valid info for server creation.
:param obj: The node object.
"""
# validate availability_zone
az_name = self.properties[self.AVAILABILITY_ZONE]
if az_name is not None:
self._validate_az(obj, az_name)
# validate flavor
flavor = self.properties[self.FLAVOR]
self._validate_flavor(obj, flavor)
# validate image
image = self.properties[self.IMAGE]
if image is not None:
self._validate_image(obj, image)
# validate key_name
keypair = self.properties[self.KEY_NAME]
if keypair is not None:
self._validate_keypair(obj, keypair)
# validate networks
networks = self.properties[self.NETWORKS]
for net in networks:
self._validate_network(obj, net)
return True
def _resolve_bdm(self, bdm):
for bd in bdm:
for key in self.BDM2_KEYS:
if bd[key] is None:
del bd[key]
return bdm
def _validate_network(self, obj, network, reason=None):
result = {}
error = None
# check network
net_ident = network.get(self.NETWORK)
if net_ident:
try:
net = self.network(obj).network_get(net_ident)
if reason == 'update':
result['net_id'] = net.id
else:
result['uuid'] = net.id
except exc.InternalError as ex:
error = six.text_type(ex)
# check port
port_ident = network.get(self.PORT)
if not error and port_ident:
try:
port = self.network(obj).port_find(port_ident)
if port.status != 'DOWN':
error = _(
"The status of the port %(port)s must be DOWN") % {
'port': port_ident
}
if reason == 'update':
result['port_id'] = port.id
else:
result['port'] = port.id
except exc.InternalError as ex:
error = six.text_type(ex)
elif port_ident is None and net_ident is None:
error = _("'%(port)s' is required if '%(net)s' is omitted") % {
'port': self.PORT,
'net': self.NETWORK
}
fixed_ip = network.get(self.FIXED_IP)
if not error and fixed_ip:
if port_ident is not None:
error = _("The '%(port)s' property and the '%(fixed_ip)s' "
"property cannot be specified at the same time") % {
'port': self.PORT,
'fixed_ip': self.FIXED_IP
}
else:
if reason == 'update':
result['fixed_ips'] = [{'ip_address': fixed_ip}]
else:
result['fixed_ip'] = fixed_ip
if error:
if reason == 'create':
raise exc.EResourceCreation(type='server', message=error)
elif reason == 'update':
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=error)
else:
raise exc.InvalidSpec(message=error)
return result
def _build_metadata(self, obj, usermeta):
"""Build custom metadata for server.
:param obj: The node object to operate on.
:return: A dictionary containing the new metadata.
"""
metadata = usermeta or {}
metadata['cluster_node_id'] = obj.id
if obj.cluster_id:
metadata['cluster_id'] = obj.cluster_id
metadata['cluster_node_index'] = six.text_type(obj.index)
return metadata
def do_create(self, obj):
"""Create a server for the node object.
:param obj: The node object for which a server will be created.
"""
kwargs = {}
for key in self.KEYS:
# context is treated as connection parameters
if key == self.CONTEXT:
continue
if self.properties[key] is not None:
kwargs[key] = self.properties[key]
admin_pass = self.properties[self.ADMIN_PASS]
if admin_pass:
kwargs.pop(self.ADMIN_PASS)
kwargs['adminPass'] = admin_pass
auto_disk_config = self.properties[self.AUTO_DISK_CONFIG]
kwargs.pop(self.AUTO_DISK_CONFIG)
kwargs['OS-DCF:diskConfig'] = 'AUTO' if auto_disk_config else 'MANUAL'
image_ident = self.properties[self.IMAGE]
if image_ident is not None:
image = self._validate_image(obj, image_ident, 'create')
kwargs.pop(self.IMAGE)
kwargs['imageRef'] = image.id
flavor_ident = self.properties[self.FLAVOR]
flavor = self._validate_flavor(obj, flavor_ident, 'create')
kwargs.pop(self.FLAVOR)
kwargs['flavorRef'] = flavor.id
keypair_name = self.properties[self.KEY_NAME]
if keypair_name:
keypair = self._validate_keypair(obj, keypair_name, 'create')
kwargs['key_name'] = keypair.name
kwargs['name'] = self.properties[self.NAME] or obj.name
metadata = self._build_metadata(obj, self.properties[self.METADATA])
kwargs['metadata'] = metadata
block_device_mapping_v2 = self.properties[self.BLOCK_DEVICE_MAPPING_V2]
if block_device_mapping_v2 is not None:
kwargs['block_device_mapping_v2'] = self._resolve_bdm(
block_device_mapping_v2)
user_data = self.properties[self.USER_DATA]
if user_data is not None:
ud = encodeutils.safe_encode(user_data)
kwargs['user_data'] = encodeutils.safe_decode(base64.b64encode(ud))
networks = self.properties[self.NETWORKS]
if networks is not None:
kwargs['networks'] = []
for net_spec in networks:
net = self._validate_network(obj, net_spec, 'create')
kwargs['networks'].append(net)
secgroups = self.properties[self.SECURITY_GROUPS]
if secgroups:
kwargs['security_groups'] = [{'name': sg} for sg in secgroups]
if 'placement' in obj.data:
if 'zone' in obj.data['placement']:
kwargs['availability_zone'] = obj.data['placement']['zone']
if 'servergroup' in obj.data['placement']:
group_id = obj.data['placement']['servergroup']
hints = self.properties.get(self.SCHEDULER_HINTS, {})
hints.update({'group': group_id})
kwargs['scheduler_hints'] = hints
server = None
resource_id = 'UNKNOWN'
try:
server = self.compute(obj).server_create(**kwargs)
self.compute(obj).wait_for_server(server.id)
return server.id
except exc.InternalError as ex:
if server and server.id:
resource_id = server.id
raise exc.EResourceCreation(type='server',
message=ex.message,
resource_id=resource_id)
def do_delete(self, obj, **params):
"""Delete the physical resource associated with the specified node.
:param obj: The node object to operate on.
:param kwargs params: Optional keyword arguments for the delete
operation.
:returns: This operation always return True unless exception is
caught.
:raises: `EResourceDeletion` if interaction with compute service fails.
"""
if not obj.physical_id:
return True
server_id = obj.physical_id
ignore_missing = params.get('ignore_missing', True)
force = params.get('force', False)
try:
driver = self.compute(obj)
if force:
driver.server_force_delete(server_id, ignore_missing)
else:
driver.server_delete(server_id, ignore_missing)
driver.wait_for_server_delete(server_id)
return True
except exc.InternalError as ex:
raise exc.EResourceDeletion(type='server',
id=server_id,
message=six.text_type(ex))
def _check_server_name(self, obj, profile):
"""Check if there is a new name to be assigned to the server.
:param obj: The node object to operate on.
:param new_profile: The new profile which may contain a name for
the server instance.
:return: A tuple consisting a boolean indicating whether the name
needs change and the server name determined.
"""
old_name = self.properties[self.NAME] or obj.name
new_name = profile.properties[self.NAME] or obj.name
if old_name == new_name:
return False, new_name
return True, new_name
def _update_name(self, obj, new_name):
"""Update the name of the server.
:param obj: The node object to operate.
:param new_name: The new name for the server instance.
:return: ``None``.
:raises: ``EResourceUpdate``.
"""
try:
self.compute(obj).server_update(obj.physical_id, name=new_name)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
def _check_password(self, obj, new_profile):
"""Check if the admin password has been changed in the new profile.
:param obj: The server node to operate, not used currently.
:param new_profile: The new profile which may contain a new password
for the server instance.
:return: A tuple consisting a boolean indicating whether the password
needs a change and the password determined which could be
'' if new password is not set.
"""
old_passwd = self.properties.get(self.ADMIN_PASS) or ''
new_passwd = new_profile.properties[self.ADMIN_PASS] or ''
if old_passwd == new_passwd:
return False, new_passwd
return True, new_passwd
def _update_password(self, obj, new_password):
"""Update the admin password for the server.
:param obj: The node object to operate.
:param new_password: The new password for the server instance.
:return: ``None``.
:raises: ``EResourceUpdate``.
"""
try:
self.compute(obj).server_change_password(obj.physical_id,
new_password)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
def _update_metadata(self, obj, new_profile):
"""Update the server metadata.
:param obj: The node object to operate on.
:param new_profile: The new profile that may contain some changes to
the metadata.
:returns: ``None``
:raises: `EResourceUpdate`.
"""
old_meta = self._build_metadata(obj, self.properties[self.METADATA])
new_meta = self._build_metadata(obj,
new_profile.properties[self.METADATA])
if new_meta == old_meta:
return
try:
self.compute(obj).server_metadata_update(obj.physical_id, new_meta)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
def _update_flavor(self, obj, new_profile):
"""Update server flavor.
:param obj: The node object to operate on.
:param old_flavor: The identity of the current flavor.
:param new_flavor: The identity of the new flavor.
:returns: ``None``.
:raises: `EResourceUpdate` when operation was a failure.
"""
old_flavor = self.properties[self.FLAVOR]
new_flavor = new_profile.properties[self.FLAVOR]
cc = self.compute(obj)
oldflavor = self._validate_flavor(obj, old_flavor, 'update')
newflavor = self._validate_flavor(obj, new_flavor, 'update')
if oldflavor.id == newflavor.id:
return
try:
cc.server_resize(obj.physical_id, newflavor.id)
cc.wait_for_server(obj.physical_id, 'VERIFY_RESIZE')
except exc.InternalError as ex:
msg = six.text_type(ex)
try:
cc.server_resize_revert(obj.physical_id)
cc.wait_for_server(obj.physical_id, 'ACTIVE')
except exc.InternalError as ex1:
msg = six.text_type(ex1)
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=msg)
try:
cc.server_resize_confirm(obj.physical_id)
cc.wait_for_server(obj.physical_id, 'ACTIVE')
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
def _update_image(self, obj, new_profile, new_name, new_password):
"""Update image used by server node.
:param obj: The node object to operate on.
:param new_profile: The profile which may contain a new image name or
ID to use.
:param new_name: The name for the server node.
:param newn_password: The new password for the administrative account
if provided.
:returns: A boolean indicating whether the image needs an update.
:raises: ``InternalError`` if operation was a failure.
"""
old_image = self.properties[self.IMAGE]
new_image = new_profile.properties[self.IMAGE]
if not new_image:
msg = _("Updating Nova server with image set to None is not "
"supported by Nova")
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=msg)
# check the new image first
img_new = self._validate_image(obj, new_image, reason='update')
new_image_id = img_new.id
driver = self.compute(obj)
if old_image:
img_old = self._validate_image(obj, old_image, reason='update')
old_image_id = img_old.id
else:
try:
server = driver.server_get(obj.physical_id)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
# Still, this 'old_image_id' could be empty, but it doesn't matter
# because the comparison below would fail if that is the case
old_image_id = server.image.get('id', None)
if new_image_id == old_image_id:
return False
try:
driver.server_rebuild(obj.physical_id, new_image_id, new_name,
new_password)
driver.wait_for_server(obj.physical_id, 'ACTIVE')
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
return True
def _create_interfaces(self, obj, networks):
"""Create new interfaces for the server node.
:param obj: The node object to operate.
:param networks: A list containing information about new network
interfaces to be created.
:returns: ``None``.
:raises: ``EResourceUpdate`` if interaction with drivers failed.
"""
cc = self.compute(obj)
try:
server = cc.server_get(obj.physical_id)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
for net_spec in networks:
net_attrs = self._validate_network(obj, net_spec, 'update')
if net_attrs:
try:
cc.server_interface_create(server, **net_attrs)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
def _delete_interfaces(self, obj, networks):
"""Delete existing interfaces from the node.
:param obj: The node object to operate.
:param networks: A list containing information about network
interfaces to be created.
:returns: ``None``
:raises: ``EResourceUpdate``
"""
def _get_network(nc, net_id, server_id):
try:
net = nc.network_get(net_id)
return net.id
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=server_id,
message=six.text_type(ex))
def _do_delete(port_id, server_id):
try:
cc.server_interface_delete(port_id, server_id)
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=server_id,
message=six.text_type(ex))
cc = self.compute(obj)
nc = self.network(obj)
try:
existing = list(cc.server_interface_list(obj.physical_id))
except exc.InternalError as ex:
raise exc.EResourceUpdate(type='server',
id=obj.physical_id,
message=six.text_type(ex))
ports = []
for intf in existing:
fixed_ips = [addr['ip_address'] for addr in intf.fixed_ips]
ports.append({
'id': intf.port_id,
'net': intf.net_id,
'ips': fixed_ips
})
for n in networks:
network = n.get('network', None)
port = n.get('port', None)
fixed_ip = n.get('fixed_ip', None)
if port:
for p in ports:
if p['id'] == port:
ports.remove(p)
_do_delete(port, obj.physical_id)
elif fixed_ip:
net_id = _get_network(nc, network, obj.physical_id)
for p in ports:
if (fixed_ip in p['ips'] and net_id == p['net']):
ports.remove(p)
_do_delete(p['id'], obj.physical_id)
elif port is None and fixed_ip is None:
net_id = _get_network(nc, network, obj.physical_id)
for p in ports:
if p['net'] == net_id:
ports.remove(p)
_do_delete(p['id'], obj.physical_id)
def _update_network(self, obj, new_profile):
"""Updating server network interfaces.
:param obj: The node object to operate.
:param new_profile: The new profile which may contain new network
settings.
:return: ``None``
:raises: ``EResourceUpdate`` if there are driver failures.
"""
networks_current = self.properties[self.NETWORKS]
networks_create = new_profile.properties[self.NETWORKS]
networks_delete = copy.deepcopy(networks_current)
for network in networks_current:
if network in networks_create:
networks_create.remove(network)
networks_delete.remove(network)
# Detach some existing interfaces
if networks_delete:
self._delete_interfaces(obj, networks_delete)
# Attach new interfaces
if networks_create:
self._create_interfaces(obj, networks_create)
return
def do_update(self, obj, new_profile=None, **params):
"""Perform update on the server.
:param obj: the server to operate on
:param new_profile: the new profile for the server.
:param params: a dictionary of optional parameters.
:returns: True if update was successful or False otherwise.
:raises: `EResourceUpdate` if operation fails.
"""
self.server_id = obj.physical_id
if not self.server_id:
return False
if not new_profile:
return False
if not self.validate_for_update(new_profile):
return False
name_changed, new_name = self._check_server_name(obj, new_profile)
passwd_changed, new_passwd = self._check_password(obj, new_profile)
# Update server image: may have side effect of changing server name
# and/or admin password
image_changed = self._update_image(obj, new_profile, new_name,
new_passwd)
if not image_changed:
# we do this separately only when rebuild wasn't performed
if name_changed:
self._update_name(obj, new_name)
if passwd_changed:
self._update_password(obj, new_passwd)
# Update server flavor: note that flavor is a required property
self._update_flavor(obj, new_profile)
self._update_network(obj, new_profile)
# TODO(Yanyan Hu): Update block_device properties
# Update server metadata
self._update_metadata(obj, new_profile)
return True
def do_get_details(self, obj):
known_keys = {
'OS-DCF:diskConfig', 'OS-EXT-AZ:availability_zone',
'OS-EXT-STS:power_state', 'OS-EXT-STS:vm_state', 'accessIPv4',
'accessIPv6', 'config_drive', 'created', 'hostId', 'id',
'key_name', 'locked', 'metadata', 'name',
'os-extended-volumes:volumes_attached', 'progress', 'status',
'updated'
}
if obj.physical_id is None or obj.physical_id == '':
return {}
driver = self.compute(obj)
try:
server = driver.server_get(obj.physical_id)
except exc.InternalError as ex:
return {'Error': {'code': ex.code, 'message': six.text_type(ex)}}
if server is None:
return {}
server_data = server.to_dict()
details = {
'image': server_data['image']['id'],
'flavor': server_data['flavor']['id'],
}
for key in known_keys:
if key in server_data:
details[key] = server_data[key]
# process special keys like 'OS-EXT-STS:task_state': these keys have
# a default value '-' when not existing
special_keys = [
'OS-EXT-STS:task_state',
'OS-SRV-USG:launched_at',
'OS-SRV-USG:terminated_at',
]
for key in special_keys:
if key in server_data:
val = server_data[key]
details[key] = val if val else '-'
# process network addresses
details['addresses'] = copy.deepcopy(server_data['addresses'])
# process security groups
sgroups = []
if 'security_groups' in server_data:
for sg in server_data['security_groups']:
sgroups.append(sg['name'])
if len(sgroups) == 0:
details['security_groups'] = ''
elif len(sgroups) == 1:
details['security_groups'] = sgroups[0]
else:
details['security_groups'] = sgroups
return dict((k, details[k]) for k in sorted(details))
def do_join(self, obj, cluster_id):
if not obj.physical_id:
return False
driver = self.compute(obj)
metadata = driver.server_metadata_get(obj.physical_id) or {}
metadata['cluster_id'] = cluster_id
metadata['cluster_node_index'] = six.text_type(obj.index)
driver.server_metadata_update(obj.physical_id, metadata)
return super(ServerProfile, self).do_join(obj, cluster_id)
def do_leave(self, obj):
if not obj.physical_id:
return False
keys = ['cluster_id', 'cluster_node_index']
self.compute(obj).server_metadata_delete(obj.physical_id, keys)
return super(ServerProfile, self).do_leave(obj)
def do_rebuild(self, obj):
if not obj.physical_id:
return False
self.server_id = obj.physical_id
driver = self.compute(obj)
try:
server = driver.server_get(self.server_id)
except exc.InternalError as ex:
raise exc.EResourceOperation(op='rebuilding',
type='server',
id=self.server_id,
message=six.text_type(ex))
if server is None or server.image is None:
return False
image_id = server.image['id']
admin_pass = self.properties.get(self.ADMIN_PASS)
try:
driver.server_rebuild(self.server_id, image_id,
self.properties.get(self.NAME), admin_pass)
driver.wait_for_server(self.server_id, 'ACTIVE')
except exc.InternalError as ex:
raise exc.EResourceOperation(op='rebuilding',
type='server',
id=self.server_id,
message=six.text_type(ex))
return True
def do_check(self, obj):
if not obj.physical_id:
return False
try:
server = self.compute(obj).server_get(obj.physical_id)
except exc.InternalError as ex:
raise exc.EResourceOperation(op='checking',
type='server',
id=obj.physical_id,
message=six.text_type(ex))
if (server is None or server.status != 'ACTIVE'):
return False
return True
def do_recover(self, obj, **options):
# NOTE: We do a 'get' not a 'pop' here, because the operations may
# get fall back to the base class for handling
operation = options.get('operation', None)
if operation and not isinstance(operation, six.string_types):
operation = operation[0]
# TODO(Qiming): Handle the case that the operation contains other
# alternative recover operation
# Depends-On: https://review.openstack.org/#/c/359676/
if operation == 'REBUILD':
return self.do_rebuild(obj)
return super(ServerProfile, self).do_recover(obj, **options)
def handle_reboot(self, obj, **options):
"""Handler for the reboot operation."""
if not obj.physical_id:
return False
reboot_type = options.get(self.REBOOT_TYPE, self.REBOOT_SOFT)
if (not isinstance(reboot_type, six.string_types)
or reboot_type not in self.REBOOT_TYPES):
return False
self.compute(obj).server_reboot(obj.physical_id, reboot_type)
self.compute(obj).wait_for_server(obj.physical_id, 'ACTIVE')
return True
def handle_change_password(self, obj, **options):
"""Handler for the change_password operation."""
if not obj.physical_id:
return False
password = options.get(self.ADMIN_PASSWORD, None)
if (password is None or not isinstance(password, six.string_types)):
return False
self.compute(obj).server_change_password(obj.physical_id, password)
return True
class HealthPolicy(base.Policy):
"""Policy for health management of a cluster."""
VERSION = '1.0'
VERSIONS = {'1.0': [{'status': consts.EXPERIMENTAL, 'since': '2017.02'}]}
PRIORITY = 600
TARGET = [
('BEFORE', consts.CLUSTER_RECOVER),
('BEFORE', consts.CLUSTER_DEL_NODES),
('BEFORE', consts.CLUSTER_SCALE_IN),
('BEFORE', consts.CLUSTER_RESIZE),
('BEFORE', consts.NODE_DELETE),
('AFTER', consts.CLUSTER_DEL_NODES),
('AFTER', consts.CLUSTER_SCALE_IN),
('AFTER', consts.CLUSTER_RESIZE),
('AFTER', consts.NODE_DELETE),
]
# Should be ANY if profile provides health check support?
PROFILE_TYPE = [
'os.nova.server',
'os.heat.stack',
]
KEYS = (DETECTION, RECOVERY) = ('detection', 'recovery')
_DETECTION_KEYS = (
DETECTION_TYPE,
DETECTION_OPTIONS,
) = ('type', 'options')
_DETECTION_OPTIONS = (DETECTION_INTERVAL, ) = ('interval', )
_RECOVERY_KEYS = (RECOVERY_ACTIONS, RECOVERY_FENCING) = ('actions',
'fencing')
FENCING_OPTION_VALUES = (
COMPUTE,
# STORAGE, NETWORK,
) = (
'COMPUTE',
# 'STORAGE', 'NETWORK'
)
ACTION_KEYS = (
ACTION_NAME,
ACTION_PARAMS,
) = (
'name',
'params',
)
properties_schema = {
DETECTION:
schema.Map(
_('Policy aspect for node failure detection.'),
schema={
DETECTION_TYPE:
schema.String(
_('Type of node failure detection.'),
constraints=[
constraints.AllowedValues(consts.DETECTION_TYPES),
],
required=True,
),
DETECTION_OPTIONS:
schema.Map(
schema={
DETECTION_INTERVAL:
schema.Integer(
_("Number of seconds between pollings. Only "
"required when type is 'NODE_STATUS_POLLING'."),
default=60,
),
}),
},
required=True,
),
RECOVERY:
schema.Map(
_('Policy aspect for node failure recovery.'),
schema={
RECOVERY_ACTIONS:
schema.List(_('List of actions to try for node recovery.'),
schema=schema.Map(
_('Action to try for node recovery.'),
schema={
ACTION_NAME:
schema.String(
_("Name of action to execute."),
constraints=[
constraints.AllowedValues(
consts.RECOVERY_ACTIONS),
],
required=True),
ACTION_PARAMS:
schema.Map(_("Parameters for the action")),
})),
RECOVERY_FENCING:
schema.List(
_('List of services to be fenced.'),
schema=schema.String(
_('Service to be fenced.'),
constraints=[
constraints.AllowedValues(FENCING_OPTION_VALUES),
],
required=True,
),
),
}),
}
def __init__(self, name, spec, **kwargs):
super(HealthPolicy, self).__init__(name, spec, **kwargs)
self.check_type = self.properties[self.DETECTION][self.DETECTION_TYPE]
options = self.properties[self.DETECTION][self.DETECTION_OPTIONS]
self.interval = options[self.DETECTION_INTERVAL]
recover_settings = self.properties[self.RECOVERY]
self.recover_actions = recover_settings[self.RECOVERY_ACTIONS]
self.fencing_types = recover_settings[self.RECOVERY_FENCING]
def validate(self, context, validate_props=False):
super(HealthPolicy, self).validate(context,
validate_props=validate_props)
if len(self.recover_actions) > 1:
message = _(
"Only one '%s' is supported for now.") % self.RECOVERY_ACTIONS
raise exc.ESchema(message=message)
# TODO(Qiming): Add detection of duplicated action names when
# support to list of actions is implemented.
def attach(self, cluster, enabled=True):
""""Hook for policy attach.
Register the cluster for health management.
:param cluster: The cluster to which the policy is being attached to.
:param enabled: The attached cluster policy is enabled or disabled.
:return: A tuple comprising execution result and policy data.
"""
p_type = cluster.rt['profile'].type_name
action_names = [a['name'] for a in self.recover_actions]
if p_type != 'os.nova.server':
if consts.RECOVER_REBUILD in action_names:
err_msg = _("Recovery action REBUILD is only applicable to "
"os.nova.server clusters.")
return False, err_msg
if consts.RECOVER_REBOOT in action_names:
err_msg = _("Recovery action REBOOT is only applicable to "
"os.nova.server clusters.")
return False, err_msg
kwargs = {
'check_type': self.check_type,
'interval': self.interval,
'params': {},
'enabled': enabled
}
health_manager.register(cluster.id, engine_id=None, **kwargs)
data = {
'check_type': self.check_type,
'interval': self.interval,
}
return True, self._build_policy_data(data)
def detach(self, cluster):
"""Hook for policy detach.
Unregister the cluster for health management.
:param cluster: The target cluster.
:returns: A tuple comprising the execution result and reason.
"""
health_manager.unregister(cluster.id)
return True, ''
def pre_op(self, cluster_id, action, **args):
"""Hook before action execution.
One of the task for this routine is to disable health policy if the
action is a request that will shrink the cluster. The reason is that
the policy may attempt to recover nodes that are to be deleted.
:param cluster_id: The ID of the target cluster.
:param action: The action to be examined.
:param kwargs args: Other keyword arguments to be checked.
:returns: Boolean indicating whether the checking passed.
"""
if action.action in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES,
consts.NODE_DELETE):
health_manager.disable(cluster_id)
return True
if action.action == consts.CLUSTER_RESIZE:
deletion = action.data.get('deletion', None)
if deletion:
health_manager.disable(cluster_id)
return True
db_cluster = co.Cluster.get(action.context, cluster_id)
current = no.Node.count_by_cluster(action.context, cluster_id)
res, reason = scaleutils.parse_resize_params(
action, db_cluster, current)
if res == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = reason
return False
if action.data.get('deletion', None):
health_manager.disable(cluster_id)
return True
pd = {
'recover_action': self.recover_actions,
'fencing': self.fencing_types,
}
action.data.update({'health': pd})
action.store(action.context)
return True
def post_op(self, cluster_id, action, **args):
"""Hook before action execution.
One of the task for this routine is to re-enable health policy if the
action is a request that will shrink the cluster thus the policy has
been temporarily disabled.
:param cluster_id: The ID of the target cluster.
:param action: The action to be examined.
:param kwargs args: Other keyword arguments to be checked.
:returns: Boolean indicating whether the checking passed.
"""
if action.action in (consts.CLUSTER_SCALE_IN, consts.CLUSTER_DEL_NODES,
consts.NODE_DELETE):
health_manager.enable(cluster_id)
return True
if action.action == consts.CLUSTER_RESIZE:
deletion = action.data.get('deletion', None)
if deletion:
health_manager.enable(cluster_id)
return True
db_cluster = co.Cluster.get(action.context, cluster_id)
current = no.Node.count_by_cluster(action.context, cluster_id)
res, reason = scaleutils.parse_resize_params(
action, db_cluster, current)
if res == base.CHECK_ERROR:
action.data['status'] = base.CHECK_ERROR
action.data['reason'] = reason
return False
if action.data.get('deletion', None):
health_manager.enable(cluster_id)
return True
return True
