Config options: centralize section "scheduler"
This change moves all of the configuration options previously defined in nova/scheduler to the new centralized nova/conf/scheduler directory. A subsequent patch will then improve the help texts. Blueprint centralize-config-options Change-Id: I08d50e873f71601a26ce768feac635243d0570f4changes/91/245891/12
EdLeafe
8 years ago
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# Copyright 2015 OpenStack Foundation
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import itertools
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from oslo_config import cfg
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host_subset_size_opt = cfg.IntOpt("scheduler_host_subset_size",
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default=1,
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help="New instances will be scheduled on a host chosen randomly from "
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"a subset of the N best hosts. This property defines the subset "
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"size that a host is chosen from. A value of 1 chooses the first "
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"host returned by the weighing functions. This value must be at "
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"least 1. Any value less than 1 will be ignored, and 1 will be "
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"used instead")
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bm_default_filter_opt = cfg.ListOpt("baremetal_scheduler_default_filters",
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default=[
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"RetryFilter",
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"AvailabilityZoneFilter",
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"ComputeFilter",
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"ComputeCapabilitiesFilter",
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"ImagePropertiesFilter",
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"ExactRamFilter",
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"ExactDiskFilter",
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"ExactCoreFilter",
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],
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help="Which filter class names to use for filtering baremetal hosts "
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"when not specified in the request.")
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use_bm_filters_opt = cfg.BoolOpt("scheduler_use_baremetal_filters",
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default=False,
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help="Flag to decide whether to use "
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"baremetal_scheduler_default_filters or not.")
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host_mgr_avail_filt_opt = cfg.MultiStrOpt("scheduler_available_filters",
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default=["nova.scheduler.filters.all_filters"],
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help="Filter classes available to the scheduler which may be "
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"specified more than once. An entry of "
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"'nova.scheduler.filters.all_filters' maps to all filters "
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"included with nova.")
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host_mgr_default_filt_opt = cfg.ListOpt("scheduler_default_filters",
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default=[
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"RetryFilter",
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"AvailabilityZoneFilter",
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"RamFilter",
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"DiskFilter",
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"ComputeFilter",
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"ComputeCapabilitiesFilter",
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"ImagePropertiesFilter",
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"ServerGroupAntiAffinityFilter",
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"ServerGroupAffinityFilter",
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],
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help="Which filter class names to use for filtering hosts when not "
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"specified in the request.")
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host_mgr_sched_wgt_cls_opt = cfg.ListOpt("scheduler_weight_classes",
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default=["nova.scheduler.weights.all_weighers"],
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help="Which weight class names to use for weighing hosts")
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host_mgr_tracks_inst_chg_opt = cfg.BoolOpt("scheduler_tracks_instance_changes",
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default=True,
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help="Determines if the Scheduler tracks changes to instances to help "
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"with its filtering decisions.")
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rpc_sched_topic_opt = cfg.StrOpt("scheduler_topic",
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default="scheduler",
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help="The topic scheduler nodes listen on")
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# This option specifies an option group, so register separately
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rpcapi_cap_opt = cfg.StrOpt("scheduler",
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help="Set a version cap for messages sent to scheduler services")
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scheduler_json_config_location_opt = cfg.StrOpt(
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"scheduler_json_config_location",
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default="",
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help="Absolute path to scheduler configuration JSON file.")
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sched_driver_host_mgr_opt = cfg.StrOpt("scheduler_host_manager",
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default="nova.scheduler.host_manager.HostManager",
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help="The scheduler host manager class to use")
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driver_opt = cfg.StrOpt("scheduler_driver",
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default="nova.scheduler.filter_scheduler.FilterScheduler",
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help="Default driver to use for the scheduler")
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driver_period_opt = cfg.IntOpt("scheduler_driver_task_period",
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default=60,
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help="How often (in seconds) to run periodic tasks in the scheduler "
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"driver of your choice. Please note this is likely to interact "
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"with the value of service_down_time, but exactly how they "
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"interact will depend on your choice of scheduler driver.")
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disk_allocation_ratio_opt = cfg.FloatOpt("disk_allocation_ratio",
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default=1.0,
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help="Virtual disk to physical disk allocation ratio")
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isolated_img_opt = cfg.ListOpt("isolated_images",
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default=[],
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help="Images to run on isolated host")
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isolated_host_opt = cfg.ListOpt("isolated_hosts",
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default=[],
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help="Host reserved for specific images")
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restrict_iso_host_img_opt = cfg.BoolOpt(
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"restrict_isolated_hosts_to_isolated_images",
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default=True,
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help="Whether to force isolated hosts to run only isolated images")
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# These opts are registered as a separate OptGroup
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trusted_opts = [
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cfg.StrOpt("attestation_server",
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help="Attestation server HTTP"),
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cfg.StrOpt("attestation_server_ca_file",
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help="Attestation server Cert file for Identity verification"),
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cfg.StrOpt("attestation_port",
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default="8443",
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help="Attestation server port"),
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cfg.StrOpt("attestation_api_url",
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default="/OpenAttestationWebServices/V1.0",
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help="Attestation web API URL"),
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cfg.StrOpt("attestation_auth_blob",
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help="Attestation authorization blob - must change"),
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cfg.IntOpt("attestation_auth_timeout",
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default=60,
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help="Attestation status cache valid period length"),
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cfg.BoolOpt("attestation_insecure_ssl",
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default=False,
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help="Disable SSL cert verification for Attestation service")
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]
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max_io_ops_per_host_opt = cfg.IntOpt("max_io_ops_per_host",
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default=8,
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help="Tells filters to ignore hosts that have this many or more "
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"instances currently in build, resize, snapshot, migrate, rescue "
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"or unshelve task states")
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agg_img_prop_iso_namespace_opt = cfg.StrOpt(
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"aggregate_image_properties_isolation_namespace",
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help="Force the filter to consider only keys matching the given "
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"namespace.")
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agg_img_prop_iso_separator_opt = cfg.StrOpt(
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"aggregate_image_properties_isolation_separator",
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default=".",
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help="The separator used between the namespace and keys")
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max_instances_per_host_opt = cfg.IntOpt("max_instances_per_host",
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default=50,
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help="Ignore hosts that have too many instances")
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ram_weight_mult_opt = cfg.FloatOpt("ram_weight_multiplier",
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default=1.0,
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help="Multiplier used for weighing ram. Negative numbers mean to "
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"stack vs spread.")
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io_ops_weight_mult_opt = cfg.FloatOpt("io_ops_weight_multiplier",
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default=-1.0,
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help="Multiplier used for weighing host io ops. Negative numbers mean "
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"a preference to choose light workload compute hosts.")
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# These opts are registered as a separate OptGroup
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metrics_weight_opts = [
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cfg.FloatOpt("weight_multiplier",
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default=1.0,
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help="Multiplier used for weighing metrics."),
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cfg.ListOpt("weight_setting",
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default=[],
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help="How the metrics are going to be weighed. This should be in "
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"the form of '<name1>=<ratio1>, <name2>=<ratio2>, ...', "
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"where <nameX> is one of the metrics to be weighed, and "
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"<ratioX> is the corresponding ratio. So for "
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"'name1=1.0, name2=-1.0' The final weight would be "
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"name1.value * 1.0 + name2.value * -1.0."),
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cfg.BoolOpt("required",
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default=True,
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help="How to treat the unavailable metrics. When a metric is NOT "
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"available for a host, if it is set to be True, it would "
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"raise an exception, so it is recommended to use the "
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"scheduler filter MetricFilter to filter out those hosts. If "
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"it is set to be False, the unavailable metric would be "
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"treated as a negative factor in weighing process, the "
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"returned value would be set by the option "
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"weight_of_unavailable."),
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cfg.FloatOpt("weight_of_unavailable",
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default=float(-10000.0),
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help="The final weight value to be returned if required is set to "
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"False and any one of the metrics set by weight_setting is "
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"unavailable."),
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]
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scheduler_max_att_opt = cfg.IntOpt("scheduler_max_attempts",
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default=3,
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help="Maximum number of attempts to schedule an instance")
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SIMPLE_OPTS = [host_subset_size_opt,
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bm_default_filter_opt,
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use_bm_filters_opt,
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host_mgr_avail_filt_opt,
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host_mgr_default_filt_opt,
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host_mgr_sched_wgt_cls_opt,
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host_mgr_tracks_inst_chg_opt,
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rpc_sched_topic_opt,
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sched_driver_host_mgr_opt,
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driver_opt,
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driver_period_opt,
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scheduler_json_config_location_opt,
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disk_allocation_ratio_opt,
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isolated_img_opt,
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isolated_host_opt,
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restrict_iso_host_img_opt,
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max_io_ops_per_host_opt,
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agg_img_prop_iso_namespace_opt,
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agg_img_prop_iso_separator_opt,
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max_instances_per_host_opt,
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ram_weight_mult_opt,
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io_ops_weight_mult_opt,
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scheduler_max_att_opt,
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]
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ALL_OPTS = itertools.chain(
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SIMPLE_OPTS,
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[rpcapi_cap_opt],
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trusted_opts,
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metrics_weight_opts,
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)
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def register_opts(conf):
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conf.register_opts(SIMPLE_OPTS)
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conf.register_opt(rpcapi_cap_opt, "upgrade_levels")
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trust_group = cfg.OptGroup(name="trusted_computing",
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title="Trust parameters")
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conf.register_group(trust_group)
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conf.register_opts(trusted_opts, group=trust_group)
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conf.register_opts(metrics_weight_opts, group="metrics")
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