Add host/rack network affinity costs/constraints.
Change-Id: I87433442071fcb62654239c33f2f3a84f0abd979
This commit is contained in:
parent
037e86fc49
commit
0be0ac1044
57
nova/scheduler/solvers/costs/host_network_affinity_cost.py
Normal file
57
nova/scheduler/solvers/costs/host_network_affinity_cost.py
Normal file
@ -0,0 +1,57 @@
|
||||
# Copyright (c) 2014 Cisco Systems, Inc.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
# not use this file except in compliance with the License. You may obtain
|
||||
# a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
"""Host network cost."""
|
||||
|
||||
from nova.openstack.common import log as logging
|
||||
from nova.scheduler.solvers import costs as solvercosts
|
||||
|
||||
from oslo.config import cfg
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
CONF = cfg.CONF
|
||||
|
||||
|
||||
class HostNetworkAffinityCost(solvercosts.BaseCost):
|
||||
"""The cost is evaluated by the existence of
|
||||
requested networks in hosts.
|
||||
"""
|
||||
|
||||
def get_cost_matrix(self, hosts, instance_uuids, request_spec,
|
||||
filter_properties):
|
||||
"""Calculate the cost matrix."""
|
||||
num_hosts = len(hosts)
|
||||
if instance_uuids:
|
||||
num_instances = len(instance_uuids)
|
||||
else:
|
||||
num_instances = request_spec.get('num_instances', 1)
|
||||
|
||||
costs = [[0 for j in range(num_instances)]
|
||||
for i in range(num_hosts)]
|
||||
|
||||
requested_networks = filter_properties.get('requested_networks', None)
|
||||
if requested_networks is None:
|
||||
return costs
|
||||
|
||||
for i in range(num_hosts):
|
||||
host_cost = 0
|
||||
for network_id, requested_ip, port_id in requested_networks:
|
||||
if network_id:
|
||||
if network_id in hosts[i].networks:
|
||||
host_cost -= 1
|
||||
costs[i] = [host_cost for j in range(num_instances)]
|
||||
|
||||
return costs
|
57
nova/scheduler/solvers/costs/rack_network_affinity_cost.py
Normal file
57
nova/scheduler/solvers/costs/rack_network_affinity_cost.py
Normal file
@ -0,0 +1,57 @@
|
||||
# Copyright (c) 2014 Cisco Systems, Inc.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
# not use this file except in compliance with the License. You may obtain
|
||||
# a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
"""Rack network cost."""
|
||||
|
||||
from nova.openstack.common import log as logging
|
||||
from nova.scheduler.solvers import costs as solvercosts
|
||||
|
||||
from oslo.config import cfg
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
CONF = cfg.CONF
|
||||
|
||||
|
||||
class RackNetworkAffinityCost(solvercosts.BaseCost):
|
||||
"""The cost is evaluated by the existence of
|
||||
requested networks in racks.
|
||||
"""
|
||||
|
||||
def get_cost_matrix(self, hosts, instance_uuids, request_spec,
|
||||
filter_properties):
|
||||
"""Calculate the cost matrix."""
|
||||
num_hosts = len(hosts)
|
||||
if instance_uuids:
|
||||
num_instances = len(instance_uuids)
|
||||
else:
|
||||
num_instances = request_spec.get('num_instances', 1)
|
||||
|
||||
costs = [[0 for j in range(num_instances)]
|
||||
for i in range(num_hosts)]
|
||||
|
||||
requested_networks = filter_properties.get('requested_networks', None)
|
||||
if requested_networks is None:
|
||||
return costs
|
||||
|
||||
for i in range(num_hosts):
|
||||
host_cost = 0
|
||||
for network_id, requested_ip, port_id in requested_networks:
|
||||
if network_id:
|
||||
if network_id in sum(hosts[i].rack_networks.values(), []):
|
||||
host_cost -= 1
|
||||
costs[i] = [host_cost for j in range(num_instances)]
|
||||
|
||||
return costs
|
@ -0,0 +1,90 @@
|
||||
# Copyright (c) 2014 Cisco Systems Inc.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
# not use this file except in compliance with the License. You may obtain
|
||||
# a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
from oslo.config import cfg
|
||||
|
||||
from nova.openstack.common import log as logging
|
||||
from nova.scheduler.solvers import linearconstraints
|
||||
|
||||
max_host_networks_opts = [
|
||||
cfg.IntOpt('max_networks_per_host',
|
||||
default=4094,
|
||||
help='The maximum number of networks allowed in a host')
|
||||
]
|
||||
|
||||
CONF = cfg.CONF
|
||||
CONF.register_opts(max_host_networks_opts)
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class NumNetworksPerHostConstraint(
|
||||
linearconstraints.BaseLinearConstraint):
|
||||
"""Constraint that specifies the maximum number of networks that
|
||||
each host can launch.
|
||||
"""
|
||||
|
||||
# The linear constraint should be formed as:
|
||||
# coeff_matrix * var_matrix' (operator) (constants)
|
||||
# where (operator) is ==, >, >=, <, <=, !=, etc.
|
||||
# For convenience, the (constants) is merged into left-hand-side,
|
||||
# thus the right-hand-side is 0.
|
||||
|
||||
def get_coefficient_vectors(self, variables, hosts, instance_uuids,
|
||||
request_spec, filter_properties):
|
||||
"""Calculate the coeffivient vectors."""
|
||||
# The coefficient for each variable is 1 and constant in
|
||||
# each constraint is -(max_instances_per_host)
|
||||
usable_network_nums = [self._get_usable_network_num(hosts[i])
|
||||
for i in range(self.num_hosts)]
|
||||
requested_networks = filter_properties.get('requested_networks', None)
|
||||
num_new_networks = [0 for i in range(self.num_hosts)]
|
||||
for i in range(self.num_hosts):
|
||||
for network_id, requested_ip, port_id in requested_networks:
|
||||
if network_id:
|
||||
if network_id not in hosts[i].networks:
|
||||
num_new_networks[i] += 1
|
||||
|
||||
coefficient_vectors = [
|
||||
[num_new_networks[i] - usable_network_nums[i]
|
||||
for j in range(self.num_instances)]
|
||||
for i in range(self.num_hosts)]
|
||||
return coefficient_vectors
|
||||
|
||||
def get_variable_vectors(self, variables, hosts, instance_uuids,
|
||||
request_spec, filter_properties):
|
||||
"""Reorganize the variables."""
|
||||
# The variable_matrix[i,j] denotes the relationship between
|
||||
# host[i] and instance[j].
|
||||
variable_vectors = []
|
||||
variable_vectors = [[variables[i][j] for j in range(
|
||||
self.num_instances)] for i in range(self.num_hosts)]
|
||||
return variable_vectors
|
||||
|
||||
def get_operations(self, variables, hosts, instance_uuids, request_spec,
|
||||
filter_properties):
|
||||
"""Set operations for each constraint function."""
|
||||
# Operations are '<='.
|
||||
operations = [(lambda x: x <= 0) for i in range(self.num_hosts)]
|
||||
return operations
|
||||
|
||||
def _get_usable_network_num(self, host_state):
|
||||
"""This method returns the usable number of network
|
||||
for the given host.
|
||||
"""
|
||||
num_networks = len(host_state.networks)
|
||||
max_networks_allowed = CONF.max_networks_per_host
|
||||
usable_network_num = max_networks_allowed - num_networks
|
||||
return usable_network_num
|
@ -0,0 +1,87 @@
|
||||
# Copyright (c) 2014 Cisco Systems Inc.
|
||||
# All Rights Reserved.
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||||
# not use this file except in compliance with the License. You may obtain
|
||||
# a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
# License for the specific language governing permissions and limitations
|
||||
# under the License.
|
||||
|
||||
from oslo.config import cfg
|
||||
|
||||
from nova.openstack.common import log as logging
|
||||
from nova.scheduler.solvers import linearconstraints
|
||||
|
||||
max_rack_networks_opts = [
|
||||
cfg.IntOpt('max_networks_per_rack',
|
||||
default=4094,
|
||||
help='The maximum number of networks allowed in a rack')
|
||||
]
|
||||
|
||||
CONF = cfg.CONF
|
||||
CONF.register_opts(max_rack_networks_opts)
|
||||
|
||||
LOG = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class NumNetworksPerRackConstraint(
|
||||
linearconstraints.BaseLinearConstraint):
|
||||
"""Constraint that specifies the maximum number of networks that
|
||||
each rack can launch.
|
||||
"""
|
||||
|
||||
# The linear constraint should be formed as:
|
||||
# coeff_matrix * var_matrix' (operator) (constants)
|
||||
# where (operator) is ==, >, >=, <, <=, !=, etc.
|
||||
# For convenience, the (constants) is merged into left-hand-side,
|
||||
# thus the right-hand-side is 0.
|
||||
|
||||
def get_coefficient_vectors(self, variables, hosts, instance_uuids,
|
||||
request_spec, filter_properties):
|
||||
"""Calculate the coeffivient vectors."""
|
||||
# The coefficient for each variable is 1 and constant in
|
||||
# each constraint is -(max_instances_per_host)
|
||||
requested_networks = filter_properties.get('requested_networks', None)
|
||||
max_networks_allowed = CONF.max_networks_per_rack
|
||||
host_coeffs = [1 for i in range(self.num_hosts)]
|
||||
for i in range(self.num_hosts):
|
||||
rack_networks = hosts[i].rack_networks
|
||||
for rack in rack_networks.keys():
|
||||
this_rack_networks = rack_networks[rack]
|
||||
num_networks = len(this_rack_networks)
|
||||
num_new_networks = 0
|
||||
for network_id, requested_ip, port_id in requested_networks:
|
||||
if network_id:
|
||||
if network_id not in this_rack_networks:
|
||||
num_new_networks += 1
|
||||
if num_networks + num_new_networks > max_networks_allowed:
|
||||
host_coeffs[i] = -1
|
||||
break
|
||||
|
||||
coefficient_vectors = [
|
||||
[host_coeffs[i] for j in range(self.num_instances)]
|
||||
for i in range(self.num_hosts)]
|
||||
return coefficient_vectors
|
||||
|
||||
def get_variable_vectors(self, variables, hosts, instance_uuids,
|
||||
request_spec, filter_properties):
|
||||
"""Reorganize the variables."""
|
||||
# The variable_matrix[i,j] denotes the relationship between
|
||||
# host[i] and instance[j].
|
||||
variable_vectors = []
|
||||
variable_vectors = [[variables[i][j] for j in range(
|
||||
self.num_instances)] for i in range(self.num_hosts)]
|
||||
return variable_vectors
|
||||
|
||||
def get_operations(self, variables, hosts, instance_uuids, request_spec,
|
||||
filter_properties):
|
||||
"""Set operations for each constraint function."""
|
||||
# Operations are '>='.
|
||||
operations = [(lambda x: x >= 0) for i in range(self.num_hosts)]
|
||||
return operations
|
Loading…
Reference in New Issue
Block a user