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# Copyright (c) 2016 OpenStack Foundation
# 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
SERVICEGROUP_OPTS = [
cfg.StrOpt('servicegroup_driver',
default='db',
choices=[
('db', 'Database ServiceGroup driver'),
('mc', 'Memcache ServiceGroup driver'),
],
help="""
This option specifies the driver to be used for the servicegroup service.
ServiceGroup API in nova enables checking status of a compute node. When a
compute worker running the nova-compute daemon starts, it calls the join API
to join the compute group. Services like nova scheduler can query the
ServiceGroup API to check if a node is alive. Internally, the ServiceGroup
client driver automatically updates the compute worker status. There are
multiple backend implementations for this service: Database ServiceGroup driver
and Memcache ServiceGroup driver.
Related Options:
* ``service_down_time`` (maximum time since last check-in for up service)
"""),
]
def register_opts(conf):
conf.register_opts(SERVICEGROUP_OPTS)
def list_opts():
return {'DEFAULT': SERVICEGROUP_OPTS}
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