1181 lines
44 KiB
Python
Executable File
1181 lines
44 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright 2014, Rackspace US, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# (c) 2014, Kevin Carter <kevin.carter@rackspace.com>
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import copy
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import json
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import logging
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import netaddr
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from osa_toolkit import dictutils as du
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from osa_toolkit import filesystem as filesys
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from osa_toolkit import ip
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import uuid
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import warnings
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logger = logging.getLogger('osa-inventory')
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INVENTORY_SKEL = {
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'_meta': {
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'hostvars': {}
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}
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}
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# This is a list of items that all hosts should have at all times.
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# Any new item added to inventory that will used as a default argument in the
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# inventory setup should be added to this list.
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REQUIRED_HOSTVARS = [
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'properties',
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'ansible_host',
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'physical_host_group',
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'container_address',
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'container_name',
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'container_networks',
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'physical_host',
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'component'
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]
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class MultipleHostsWithOneIPError(Exception):
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def __init__(self, ip, assigned_host, new_host):
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self.ip = ip
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self.assigned_host = assigned_host
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self.new_host = new_host
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# Order the hostnames for predictable testing.
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host_list = [assigned_host, new_host]
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host_list.sort()
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error_msg = ("Both host:{} and host:{} have "
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"address:{} assigned. Cannot "
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"assign same ip to both hosts")
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self.message = error_msg.format(host_list[0], host_list[1], ip)
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def __str__(self):
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return self.message
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class ProviderNetworkMisconfiguration(Exception):
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def __init__(self, queue_name):
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self.queue_name = queue_name
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error_msg = ("Provider network with queue '{queue}' "
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"requires 'is_container_address' and "
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"'is_ssh_address' to be set to True.")
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self.message = error_msg.format(queue=self.queue_name)
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def __str__(self):
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return self.message
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class MultipleIpForHostError(Exception):
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def __init__(self, hostname, current_ip, new_ip):
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self.hostname = hostname
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self.current_ip = current_ip
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self.new_ip = new_ip
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# Sort the IPs for our error message so we're always consistent.
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ips = [current_ip, new_ip]
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ips.sort()
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error_msg = "Host {hostname} has both {ips[0]} and {ips[1]} assigned"
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self.message = error_msg.format(hostname=hostname, ips=ips)
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def __str__(self):
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return self.message
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class MissingStaticRouteInfo(Exception):
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def __init__(self, queue_name):
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self.queue_name = queue_name
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error_msg = ("Static route provider network with queue '{queue}' "
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"needs both 'cidr' and 'gateway' values.")
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self.message = error_msg.format(queue=self.queue_name)
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def __str__(self):
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return self.message
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class LxcHostsDefined(Exception):
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def __init__(self):
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self.message = ("The group 'lxc_hosts' must not be defined in config;"
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" it will be dynamically generated.")
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def __str__(self):
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return self.message
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class GroupConflict(Exception):
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pass
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def _parse_belongs_to(key, belongs_to, inventory):
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"""Parse all items in a `belongs_to` list.
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This function assumes the key defined is a group that has child subgroups,
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*not* a group with hosts defined in the group configuration.
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:param key: ``str`` Name of key to append to a given entry
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:param belongs_to: ``list`` List of items to iterate over
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:param inventory: ``dict`` Living dictionary of inventory
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"""
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for item in belongs_to:
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if key not in inventory[item]['children']:
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appended = du.append_if(array=inventory[item]['children'],
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item=key)
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if appended:
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logger.debug("Added %s to %s", key, item)
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def _build_container_hosts(container_affinity, container_hosts, type_and_name,
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inventory, host_type, container_type,
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container_host_type, physical_host_type, config,
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properties, assignment):
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"""Add in all of the host associations into inventory.
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This will add in all of the hosts into the inventory based on the given
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affinity for a container component and its subsequent type groups.
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:param container_affinity: ``int`` Set the number of a given container
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:param container_hosts: ``list`` List of containers on an host
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:param type_and_name: ``str`` Combined name of host and container name
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:param inventory: ``dict`` Living dictionary of inventory
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:param host_type: ``str`` Name of the host type
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:param container_type: ``str`` Type of container
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:param container_host_type: ``str`` Type of host
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:param physical_host_type: ``str`` Name of physical host group
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:param config: ``dict`` User defined information
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:param properties: ``dict`` Container properties
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:param assignment: ``str`` Name of container component target
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"""
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container_list = []
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is_metal = False
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if properties:
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is_metal = properties.get('is_metal', False)
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for make_container in range(container_affinity):
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for i in container_hosts:
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if '{}-'.format(type_and_name) in i:
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du.append_if(array=container_list, item=i)
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existing_count = len(list(set(container_list)))
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if existing_count < container_affinity:
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hostvars = inventory['_meta']['hostvars']
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container_mapping = inventory[container_type]['children']
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address = None
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if is_metal is False:
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cuuid = str(uuid.uuid4())
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cuuid = cuuid.split('-')[0]
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container_host_name = '{}-{}'.format(type_and_name, cuuid)
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logger.debug("Generated container name %s",
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container_host_name)
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hostvars_options = hostvars[container_host_name] = {}
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if container_host_type not in inventory:
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inventory[container_host_type] = {
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"hosts": [],
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}
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appended = du.append_if(
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array=inventory[container_host_type]["hosts"],
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item=container_host_name
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)
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if appended:
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logger.debug("Added container %s to %s",
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container_host_name, container_host_type)
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du.append_if(array=container_hosts, item=container_host_name)
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else:
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if host_type not in hostvars:
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hostvars[host_type] = {}
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hostvars_options = hostvars[host_type]
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container_host_name = host_type
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host_type_config = config[physical_host_type][host_type]
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address = host_type_config.get('ip')
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# Create a host types containers group and append it to inventory
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host_type_containers = '{}-host_containers'.format(host_type)
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du.append_if(array=container_mapping, item=host_type_containers)
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hostvars_options.update({
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'properties': properties,
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'ansible_host': address,
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'container_address': address,
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'container_name': container_host_name,
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'physical_host': host_type,
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'physical_host_group': physical_host_type,
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'component': assignment
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})
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def _append_container_types(inventory, host_type):
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"""Append the "physical_host" type to all containers.
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:param inventory: ``dict`` Living dictionary of inventory
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:param host_type: ``str`` Name of the host type
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"""
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for _host in inventory['_meta']['hostvars'].keys():
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hdata = inventory['_meta']['hostvars'][_host]
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if 'container_name' in hdata:
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if hdata['container_name'].startswith(host_type):
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if 'physical_host' not in hdata:
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logger.debug("Set physical host for %s to %s",
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_host, host_type)
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hdata['physical_host'] = host_type
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def _append_to_host_groups(inventory, container_type, assignment, host_type,
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type_and_name, host_options):
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"""Append all containers to physical (logical) groups based on host types.
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:param inventory: ``dict`` Living dictionary of inventory
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:param container_type: ``str`` Type of container
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:param assignment: ``str`` Name of container component target
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:param host_type: ``str`` Name of the host type
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:param type_and_name: ``str`` Combined name of host and container name
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"""
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physical_group_type = '{}_all'.format(container_type.split('_')[0])
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if physical_group_type not in inventory:
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logger.debug("Added %s group to inventory", physical_group_type)
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inventory[physical_group_type] = {'hosts': []}
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iph = inventory[physical_group_type]['hosts']
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iah = inventory[assignment]['hosts']
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for hname, hdata in inventory['_meta']['hostvars'].items():
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is_metal = False
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properties = hdata.get('properties')
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if properties:
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is_metal = properties.get('is_metal', False)
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if 'container_types' in hdata or 'container_name' in hdata:
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if 'container_name' not in hdata:
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container = hdata['container_name'] = hname
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else:
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container = hdata['container_name']
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component = hdata.get('component')
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if container.startswith(host_type):
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if 'physical_host' not in hdata:
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hdata['physical_host'] = host_type
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if container.startswith('{}-'.format(type_and_name)):
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appended = du.append_if(array=iah, item=container)
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if appended:
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logger.debug("Added host %s to %s hosts",
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container, assignment)
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elif is_metal is True:
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if component == assignment:
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appended = du.append_if(array=iah, item=container)
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if appended:
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logger.debug("Added is_metal host %s to %s hosts",
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container, assignment)
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if container.startswith('{}-'.format(type_and_name)):
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appended = du.append_if(array=iph, item=container)
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if appended:
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logger.debug("Added host %s to %s hosts",
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container, physical_group_type)
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elif is_metal is True:
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if container.startswith(host_type):
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appended = du.append_if(array=iph, item=container)
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if appended:
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logger.debug("Added is_metal host %s to %s hosts",
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container, physical_group_type)
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# Append any options in config to the host_vars of a container
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container_vars = host_options.get('container_vars')
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if isinstance(container_vars, dict):
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for _keys, _vars in container_vars.items():
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# Copy the options dictionary for manipulation
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if isinstance(_vars, dict):
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options = _vars.copy()
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else:
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options = _vars
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limit = None
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# If a limit is set use the limit string as a filter
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# for the container name and see if it matches.
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if isinstance(options, (str, dict, list)):
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if 'limit_container_types' in options:
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limit = options.pop(
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'limit_container_types', None
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)
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if limit is None or (component and limit in component):
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logger.debug("Set options for %s", hname)
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hdata[_keys] = options
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def _add_container_hosts(assignment, config, container_name, container_type,
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inventory, properties):
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"""Add a given container name and type to the hosts.
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:param assignment: ``str`` Name of container component target
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:param config: ``dict`` User defined information
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:param container_name: ``str`` Name fo container
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:param container_type: ``str`` Type of container
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:param inventory: ``dict`` Living dictionary of inventory
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:param properties: ``dict`` Dict of container properties
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"""
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physical_host_type = '{}_hosts'.format(container_type.split('_')[0])
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# If the physical host type is not in config return
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if physical_host_type not in config:
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return
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for host_type in inventory[physical_host_type]['hosts']:
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container_hosts = inventory[container_name]['hosts']
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# If host_type is not in config do not append containers to it
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if host_type not in config[physical_host_type]:
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continue
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# Get any set host options
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host_options = config[physical_host_type][host_type]
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affinity = host_options.get('affinity', {})
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container_affinity = affinity.get(container_name, 1)
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# Ensures that container names are not longer than 63
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# This section will ensure that we are not it by the following bug:
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# https://bugzilla.mindrot.org/show_bug.cgi?id=2239
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type_and_name = '{}_{}'.format(host_type, container_name)
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logger.debug("Generated container name %s", type_and_name)
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max_hostname_len = 52
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if len(type_and_name) > max_hostname_len:
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raise SystemExit(
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'The resulting combination of [ "{}" + "{}" ] is longer than'
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' 52 characters. This combination will result in a container'
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' name that is longer than the maximum allowable hostname of'
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' 63 characters. Before this process can continue please'
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' adjust the host entries in your "openstack_user_config.yml"'
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' to use a short hostname. The recommended hostname length is'
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' < 20 characters long.'.format(host_type, container_name)
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)
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physical_host = inventory['_meta']['hostvars'][host_type]
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container_host_type = '{}-host_containers'.format(host_type)
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if 'container_types' not in physical_host:
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physical_host['container_types'] = container_host_type
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elif physical_host['container_types'] != container_host_type:
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physical_host['container_types'] = container_host_type
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# Add all of the containers into the inventory
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logger.debug("Building containers for host %s", container_name)
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_build_container_hosts(
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container_affinity,
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container_hosts,
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type_and_name,
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inventory,
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host_type,
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container_type,
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container_host_type,
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physical_host_type,
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config,
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properties,
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assignment,
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)
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# Add the physical host type to all containers from the built inventory
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_append_container_types(inventory, host_type)
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_append_to_host_groups(
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inventory,
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container_type,
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assignment,
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host_type,
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type_and_name,
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host_options
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)
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def user_defined_setup(config, inventory):
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"""Apply user defined entries from config into inventory.
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:param config: ``dict`` User defined information
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:param inventory: ``dict`` Living dictionary of inventory
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"""
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hvs = inventory['_meta']['hostvars']
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for key, value in config.items():
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if key.endswith('hosts'):
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if key not in inventory:
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logger.debug("Key %s was added to inventory", key)
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inventory[key] = {'hosts': []}
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if value is None:
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logger.debug("Key %s had no value", key)
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return
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for _key, _value in value.items():
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if _key not in hvs:
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hvs[_key] = {}
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hvs[_key].update({
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'ansible_host': _value['ip'],
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'container_address': _value['ip'],
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'is_metal': True,
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'physical_host_group': key
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})
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logger.debug("Hostvars info updated for %s", key)
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# If the entry is missing the properties key add it.
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properties = hvs[_key].get('properties')
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if not properties or not isinstance(properties, dict):
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hvs[_key]['properties'] = dict()
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hvs[_key]['properties'].update({'is_metal': True})
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if 'host_vars' in _value:
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for _k, _v in _value['host_vars'].items():
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hvs[_key][_k] = _v
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ip.USED_IPS.add(_value['ip'])
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appended = du.append_if(array=inventory[key]['hosts'],
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item=_key)
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if appended:
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logger.debug("Added host %s to group %s",
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_key, key)
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def skel_setup(environment, inventory):
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"""Build out the main inventory skeleton as needed.
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:param environment: ``dict`` Known environment information
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:param inventory: ``dict`` Living dictionary of inventory
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"""
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for key, value in environment.items():
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if key == 'version':
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continue
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for _key, _value in value.items():
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if _key not in inventory:
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logger.debug("Key %s added to inventory", _key)
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inventory[_key] = {}
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if _key.endswith('container'):
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if 'hosts' not in inventory[_key]:
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inventory[_key]['hosts'] = []
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else:
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if 'children' not in inventory[_key]:
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inventory[_key]['children'] = []
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# TODO(nrb): This line is duplicated above;
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# is that necessary?
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if 'hosts' not in inventory[_key]:
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inventory[_key]['hosts'] = []
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if 'belongs_to' in _value:
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for assignment in _value['belongs_to']:
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if assignment not in inventory:
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logger.debug("Created group %s", assignment)
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inventory[assignment] = {}
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if 'children' not in inventory[assignment]:
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inventory[assignment]['children'] = []
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if 'hosts' not in inventory[assignment]:
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inventory[assignment]['hosts'] = []
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def skel_load(skeleton, inventory):
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"""Build out data as provided from the defined `skel` dictionary.
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:param skeleton: ``dict`` Dictionary defining group and component
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memberships for the inventory.
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:param inventory: ``dict`` Living dictionary of inventory
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"""
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for key, value in skeleton.items():
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_parse_belongs_to(
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key,
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belongs_to=value['belongs_to'],
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inventory=inventory
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)
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def network_entry(is_metal, interface,
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bridge=None, net_type=None, net_mtu=None):
|
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"""Return a network entry for a container."""
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|
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# TODO(cloudnull) After a few releases this conditional should be
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# simplified. The container address checking that is ssh address
|
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# is only being done to support old inventory.
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|
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_network = dict()
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|
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if not is_metal:
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_network['interface'] = interface
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if bridge:
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_network['bridge'] = bridge
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|
|
if net_type:
|
|
_network['type'] = net_type
|
|
|
|
if net_mtu:
|
|
_network['mtu'] = net_mtu
|
|
|
|
return _network
|
|
|
|
|
|
def _add_additional_networks(key, inventory, ip_q, q_name, netmask, interface,
|
|
bridge, net_type, net_mtu, user_config,
|
|
is_ssh_address, is_container_address,
|
|
static_routes, reference_group, address_prefix):
|
|
"""Process additional ip adds and append then to hosts as needed.
|
|
|
|
If the host is found to be "is_metal" it will be marked as "on_metal"
|
|
and will not have an additionally assigned IP address.
|
|
|
|
:param key: ``str`` Component key name. This could be a group or a host
|
|
name
|
|
:param inventory: ``dict`` Living dictionary of inventory.
|
|
:param ip_q: ``object`` build queue of IP addresses.
|
|
:param q_name: ``str`` key to use in host vars for storage. May be blank.
|
|
:param netmask: ``str`` netmask to use.
|
|
:param interface: ``str`` interface name to set for the network.
|
|
:param user_config: ``dict`` user defined configuration details.
|
|
:param is_ssh_address: ``bol`` set this address as ansible_host.
|
|
:param is_container_address: ``bol`` set this address to container_address.
|
|
:param static_routes: ``list`` List containing static route dicts.
|
|
:param reference_group: ``str`` group to filter membership of host against.
|
|
:param address_prefix: ``str`` override prefix of key for network address.
|
|
"""
|
|
|
|
base_hosts = inventory['_meta']['hostvars']
|
|
lookup = inventory.get(key, list())
|
|
|
|
if 'children' in lookup and lookup['children']:
|
|
for group in lookup['children']:
|
|
_add_additional_networks(
|
|
group,
|
|
inventory,
|
|
ip_q,
|
|
q_name,
|
|
netmask,
|
|
interface,
|
|
bridge,
|
|
net_type,
|
|
net_mtu,
|
|
user_config,
|
|
is_ssh_address,
|
|
is_container_address,
|
|
static_routes,
|
|
reference_group,
|
|
address_prefix
|
|
)
|
|
|
|
# Make sure the lookup object has a value.
|
|
if lookup:
|
|
hosts = lookup.get('hosts')
|
|
if not hosts:
|
|
return
|
|
else:
|
|
return
|
|
|
|
if address_prefix:
|
|
old_address = '%s_address' % address_prefix
|
|
# TODO(cloudnull) after a few releases this should be removed.
|
|
elif q_name:
|
|
old_address = '{}_address'.format(q_name)
|
|
else:
|
|
old_address = '{}_address'.format(interface)
|
|
|
|
for container_host in hosts:
|
|
container = base_hosts[container_host]
|
|
|
|
physical_host = container.get('physical_host')
|
|
if (reference_group and
|
|
physical_host not in
|
|
inventory.get(reference_group).get('hosts')):
|
|
continue
|
|
|
|
# TODO(cloudnull) after a few releases this should be removed.
|
|
# This removes the old container network value that now serves purpose.
|
|
container.pop('container_network', None)
|
|
|
|
if 'container_networks' in container:
|
|
networks = container['container_networks']
|
|
else:
|
|
networks = container['container_networks'] = dict()
|
|
|
|
is_metal = False
|
|
properties = container.get('properties')
|
|
if properties:
|
|
is_metal = properties.get('is_metal', False)
|
|
|
|
_network = network_entry(
|
|
is_metal,
|
|
interface,
|
|
bridge,
|
|
net_type,
|
|
net_mtu
|
|
)
|
|
|
|
# update values from _network in case they have changed
|
|
if old_address in networks:
|
|
for key in _network.keys():
|
|
networks[old_address][key] = _network[key]
|
|
|
|
# This should convert found addresses based on q_name + "_address"
|
|
# and then build the network if its not found.
|
|
if not is_metal and old_address not in networks:
|
|
network = networks[old_address] = _network
|
|
if old_address in container and container[old_address]:
|
|
network['address'] = container.pop(old_address)
|
|
elif not is_metal:
|
|
address = ip.get_ip_address(name=q_name, ip_q=ip_q)
|
|
if address:
|
|
network['address'] = address
|
|
|
|
network['netmask'] = netmask
|
|
elif is_metal:
|
|
network = networks[old_address] = _network
|
|
network['netmask'] = netmask
|
|
if is_ssh_address or is_container_address:
|
|
# Container physical host group
|
|
cphg = container.get('physical_host_group')
|
|
|
|
# user_config data from the container physical host group
|
|
if user_config[cphg].get(container_host) is not None:
|
|
phg = user_config[cphg][container_host]
|
|
else:
|
|
phg = user_config[cphg][physical_host]
|
|
network['address'] = phg['ip']
|
|
|
|
if is_ssh_address is True:
|
|
container['ansible_host'] = networks[old_address]['address']
|
|
|
|
if is_container_address is True:
|
|
container['container_address'] = networks[old_address]['address']
|
|
|
|
if static_routes:
|
|
# NOTE: networks[old_address]['static_routes'] will get
|
|
# regenerated on each run
|
|
networks[old_address]['static_routes'] = []
|
|
for route in static_routes:
|
|
# only add static routes if they are specified correctly;
|
|
# that is, the key and a value must be present. This doesn't
|
|
# ensure that the values provided are routable, just that
|
|
# they are not empty.
|
|
cidr_present = route.get('cidr', False)
|
|
gateway_present = route.get('gateway', False)
|
|
|
|
if not (cidr_present and gateway_present):
|
|
raise MissingStaticRouteInfo(q_name)
|
|
networks[old_address]['static_routes'].append(route)
|
|
|
|
|
|
def container_skel_load(container_skel, inventory, config):
|
|
"""Build out all containers as defined in the environment file.
|
|
|
|
:param container_skel: ``dict`` container skeleton for all known containers
|
|
:param inventory: ``dict`` Living dictionary of inventory
|
|
:param config: ``dict`` User defined information
|
|
"""
|
|
logger.debug("Loading container skeleton")
|
|
|
|
for key, value in container_skel.items():
|
|
contains_in = value.get('contains', False)
|
|
belongs_to_in = value.get('belongs_to', False)
|
|
if contains_in or belongs_to_in:
|
|
for assignment in value['contains']:
|
|
for container_type in value['belongs_to']:
|
|
_add_container_hosts(
|
|
assignment,
|
|
config,
|
|
key,
|
|
container_type,
|
|
inventory,
|
|
value.get('properties', {})
|
|
)
|
|
else:
|
|
cidr_networks = config.get('cidr_networks')
|
|
provider_queues = {}
|
|
for net_name in cidr_networks:
|
|
ip_q = ip.load_optional_q(
|
|
cidr_networks, cidr_name=net_name
|
|
)
|
|
provider_queues[net_name] = ip_q
|
|
if ip_q is not None:
|
|
net = netaddr.IPNetwork(cidr_networks.get(net_name))
|
|
q_netmask = '{}_netmask'.format(net_name)
|
|
provider_queues[q_netmask] = str(net.netmask)
|
|
|
|
overrides = config['global_overrides']
|
|
# iterate over a list of provider_networks, var=pn
|
|
pns = overrides.get('provider_networks', list())
|
|
for pn in pns:
|
|
# p_net are the provider_network values
|
|
p_net = pn.get('network')
|
|
if not p_net:
|
|
continue
|
|
|
|
q_name = p_net.get('ip_from_q')
|
|
ip_from_q = provider_queues.get(q_name)
|
|
if ip_from_q:
|
|
netmask = provider_queues['{}_netmask'.format(q_name)]
|
|
else:
|
|
netmask = None
|
|
|
|
for group in p_net.get('group_binds', list()):
|
|
_add_additional_networks(
|
|
key=group,
|
|
inventory=inventory,
|
|
ip_q=ip_from_q,
|
|
q_name=q_name,
|
|
netmask=netmask,
|
|
interface=p_net['container_interface'],
|
|
bridge=p_net['container_bridge'],
|
|
net_type=p_net.get('container_type'),
|
|
net_mtu=p_net.get('container_mtu'),
|
|
user_config=config,
|
|
is_ssh_address=p_net.get('is_ssh_address'),
|
|
is_container_address=p_net.get('is_container_address'),
|
|
static_routes=p_net.get('static_routes'),
|
|
reference_group=p_net.get('reference_group'),
|
|
address_prefix=p_net.get('address_prefix')
|
|
)
|
|
|
|
populate_lxc_hosts(inventory)
|
|
|
|
|
|
def populate_lxc_hosts(inventory):
|
|
"""Insert nodes hosting LXC containers into the lxc_hosts group
|
|
|
|
The inventory dictionary passed in to this function will be mutated.
|
|
|
|
:param inventory: The dictionary containing the Ansible inventory
|
|
"""
|
|
host_nodes = _find_lxc_hosts(inventory)
|
|
inventory['lxc_hosts'] = {'hosts': host_nodes}
|
|
logger.debug("Created lxc_hosts group.")
|
|
|
|
|
|
def _find_lxc_hosts(inventory):
|
|
"""Build the lxc_hosts dynamic group
|
|
|
|
Inspect the generated inventory for nodes that host LXC containers.
|
|
Return a list of those that match for insertion into the inventory.
|
|
Populate the 'lxc_hosts' group with any node that matches.
|
|
|
|
This and the populate_lxc_hosts function are split in order to be less
|
|
coupled and more testable.
|
|
|
|
:param inventory: The dictionary containing the Ansible inventory
|
|
:returns: List of hostnames that are LXC hosts
|
|
:rtype: list
|
|
"""
|
|
host_nodes = []
|
|
for host, hostvars in inventory['_meta']['hostvars'].items():
|
|
physical_host = hostvars.get('physical_host', None)
|
|
|
|
# We want this node's "parent", so append the physical host
|
|
if not host == physical_host:
|
|
appended = du.append_if(array=host_nodes, item=physical_host)
|
|
if appended:
|
|
logger.debug("%s added to lxc_hosts group", physical_host)
|
|
return host_nodes
|
|
|
|
|
|
def _ensure_inventory_uptodate(inventory, container_skel):
|
|
"""Update inventory if needed.
|
|
|
|
Inspect the current inventory and ensure that all host items have all of
|
|
the required entries.
|
|
|
|
:param inventory: ``dict`` Living inventory of containers and hosts
|
|
"""
|
|
host_vars = inventory['_meta']['hostvars']
|
|
for hostname, _vars in host_vars.items():
|
|
if 'container_name' not in _vars:
|
|
_vars['container_name'] = hostname
|
|
|
|
for rh in REQUIRED_HOSTVARS:
|
|
if rh not in _vars:
|
|
_vars[rh] = None
|
|
if rh == 'container_networks':
|
|
_vars[rh] = {}
|
|
|
|
# For each of the various properties in the container skeleton,
|
|
# copy them into the host's properties dictionary
|
|
for container_type, type_vars in container_skel.items():
|
|
item = inventory.get(container_type)
|
|
# Note: this creates an implicit dependency on skel_setup which
|
|
# adds the hosts entries.
|
|
hosts = item.get('hosts')
|
|
if hosts:
|
|
for host in hosts:
|
|
container = host_vars[host]
|
|
if 'properties' in type_vars:
|
|
logger.debug("Copied propeties for %s from skeleton",
|
|
container)
|
|
container['properties'] = type_vars['properties']
|
|
|
|
|
|
def _parse_global_variables(user_cidr, inventory, user_defined_config):
|
|
"""Add any extra variables that may have been set in config.
|
|
|
|
:param user_cidr: ``str`` IP address range in CIDR notation
|
|
:param inventory: ``dict`` Living inventory of containers and hosts
|
|
:param user_defined_config: ``dict`` User defined variables
|
|
"""
|
|
if 'all' not in inventory:
|
|
inventory['all'] = {}
|
|
|
|
if 'vars' not in inventory['all']:
|
|
inventory['all']['vars'] = {}
|
|
|
|
# Write the users defined cidr into global variables.
|
|
inventory['all']['vars']['container_cidr'] = user_cidr
|
|
|
|
if 'global_overrides' in user_defined_config:
|
|
if isinstance(user_defined_config['global_overrides'], dict):
|
|
inventory['all']['vars'].update(
|
|
user_defined_config['global_overrides']
|
|
)
|
|
logger.debug("Applied global_overrides")
|
|
|
|
# NOTE (palendae): wrapped in a list to support python3,
|
|
# which uses `dict_keys` objects that can't be appended
|
|
kept_vars = list(user_defined_config['global_overrides'].keys())
|
|
kept_vars.append('container_cidr')
|
|
|
|
# Remove global overrides that were deleted from inventory, too
|
|
# We use the to_delete list due to Python 3 disallowing dict
|
|
# size mutation during iteration
|
|
to_delete = []
|
|
for key in inventory['all']['vars'].keys():
|
|
if key not in kept_vars:
|
|
to_delete.append(key)
|
|
|
|
for key in to_delete:
|
|
logger.debug("Deleting key %s from inventory", key)
|
|
del inventory['all']['vars'][key]
|
|
|
|
|
|
def _check_same_ip_to_multiple_host(config):
|
|
"""Check for IPs assigned to multiple hosts
|
|
|
|
: param: config: ``dict`` User provided configuration
|
|
"""
|
|
|
|
ips_to_hostnames_mapping = dict()
|
|
for key, value in config.items():
|
|
if key.endswith('hosts'):
|
|
for _key, _value in value.items():
|
|
hostname = _key
|
|
ip = _value['ip']
|
|
if not (ip in ips_to_hostnames_mapping):
|
|
ips_to_hostnames_mapping[ip] = hostname
|
|
else:
|
|
if ips_to_hostnames_mapping[ip] != hostname:
|
|
info = (ip, ips_to_hostnames_mapping[ip], hostname)
|
|
raise MultipleHostsWithOneIPError(*info)
|
|
logger.debug("No hosts with duplicated IPs found")
|
|
|
|
|
|
def _check_multiple_ips_to_host(config):
|
|
"""Check for multiple IPs assigned to a single hostname
|
|
|
|
:param: config: ``dict`` User provided configuration
|
|
"""
|
|
|
|
# Extract only the dictionaries in the host groups.
|
|
host_ip_map = {}
|
|
for groupnames, group in config.items():
|
|
if '_hosts' in groupnames:
|
|
for hostname, entries in group.items():
|
|
if hostname not in host_ip_map:
|
|
host_ip_map[hostname] = entries['ip']
|
|
else:
|
|
current_ip = host_ip_map[hostname]
|
|
new_ip = entries['ip']
|
|
if not current_ip == new_ip:
|
|
raise MultipleIpForHostError(hostname, current_ip,
|
|
new_ip)
|
|
logger.debug("No hosts with multiple IPs found.")
|
|
return True
|
|
|
|
|
|
def _check_lxc_hosts(config):
|
|
if 'lxc_hosts' in config.keys():
|
|
raise LxcHostsDefined()
|
|
logger.debug("lxc_hosts group not defined")
|
|
|
|
|
|
def _check_group_branches(config, physical_skel):
|
|
"""Ensure that groups have either hosts or child groups, not both
|
|
|
|
The inventory skeleton population assumes that groups will either have
|
|
hosts as "leaves", or other groups as children, not both. This function
|
|
ensures this invariant is met by comparing the configuration to the
|
|
physical skeleton definition.
|
|
|
|
:param config: ``dict`` The contents of the user configuration file. Keys
|
|
present in this dict are assumed to be groups containing host entries.
|
|
:param config: ``dict`` The physical skeleton tree, defining parent/child
|
|
relationships between groups. Values in the 'belong_to' key are
|
|
assumed to be parents of other groups.
|
|
:raises GroupConflict:
|
|
"""
|
|
logging.debug("Checking group branches match expectations")
|
|
for group, relations in physical_skel.items():
|
|
if 'belongs_to' not in relations:
|
|
continue
|
|
parents = relations['belongs_to']
|
|
for parent in parents:
|
|
if parent in config.keys():
|
|
message = (
|
|
"Group {parent} has a child group {child}, "
|
|
"but also has host entries in user configuration. "
|
|
"Hosts cannot be sibling with groups."
|
|
).format(parent=parent, child=group)
|
|
raise GroupConflict(message)
|
|
logging.debug("Group branches ok.")
|
|
return True
|
|
|
|
|
|
def _check_config_settings(cidr_networks, config, container_skel):
|
|
"""check preciseness of config settings
|
|
|
|
:param cidr_networks: ``dict`` cidr_networks from config
|
|
:param config: ``dict`` User defined information
|
|
:param container_skel: ``dict`` container skeleton for all known containers
|
|
"""
|
|
|
|
# search for any container that doesn't have is_metal flag set to true
|
|
is_provider_networks_needed = False
|
|
for key, value in container_skel.items():
|
|
properties = value.get('properties', {})
|
|
is_metal = properties.get('is_metal', False)
|
|
if not is_metal:
|
|
is_provider_networks_needed = True
|
|
break
|
|
|
|
if is_provider_networks_needed:
|
|
if ('global_overrides' not in config):
|
|
raise SystemExit(
|
|
"global_overrides can't be found in user config"
|
|
)
|
|
|
|
elif ('provider_networks' not in config['global_overrides']):
|
|
raise SystemExit(
|
|
"provider networks can't be found under "
|
|
"global_overrides in user config"
|
|
)
|
|
else:
|
|
# make sure that provider network's ip_from_q is valid
|
|
overrides = config['global_overrides']
|
|
pns = overrides.get('provider_networks', list())
|
|
for pn in pns:
|
|
p_net = pn.get('network')
|
|
if not p_net:
|
|
continue
|
|
q_name = p_net.get('ip_from_q')
|
|
if q_name and q_name not in cidr_networks:
|
|
raise SystemExit(
|
|
"can't find " + q_name + " in cidr_networks"
|
|
)
|
|
if (p_net.get('container_bridge') ==
|
|
overrides.get('management_bridge')):
|
|
if (not p_net.get('is_ssh_address') or
|
|
not p_net.get('is_container_address')):
|
|
raise ProviderNetworkMisconfiguration(q_name)
|
|
|
|
logger.debug("Provider network information OK")
|
|
|
|
# look for same ip address assigned to different hosts
|
|
_check_same_ip_to_multiple_host(config)
|
|
|
|
_check_multiple_ips_to_host(config)
|
|
|
|
_check_lxc_hosts(config)
|
|
|
|
|
|
def _check_all_conf_groups_present(config, environment):
|
|
"""Verifies that all groups defined in the config are in the environment
|
|
|
|
If a group is in config but not the environment, a warning will be raised.
|
|
Multiple warnings can be raised, and the return value will be set to False.
|
|
|
|
If all groups found are in the environment, the function returns True
|
|
|
|
:param config: ``dict`` user's provided configuration
|
|
:param environment: ``dict`` group membership mapping
|
|
:rtype: bool, True if all groups are in environment, False otherwise
|
|
"""
|
|
excludes = ('global_overrides', 'cidr_networks', 'used_ips')
|
|
config_groups = [k for k in config.keys() if k not in excludes]
|
|
env_groups = environment['physical_skel'].keys()
|
|
|
|
retval = True
|
|
|
|
for group in config_groups:
|
|
if group not in env_groups:
|
|
msg = ("Group {} was found in configuration but "
|
|
"not the environment.".format(group))
|
|
warnings.warn(msg)
|
|
|
|
retval = False
|
|
return retval
|
|
|
|
|
|
def _collect_hostnames(inventory):
|
|
|
|
# Generate a list of all hosts and their used IP addresses
|
|
hostnames_ips = {}
|
|
for _host, _vars in inventory['_meta']['hostvars'].items():
|
|
host_hash = hostnames_ips[_host] = {}
|
|
for _key, _value in _vars.items():
|
|
if _key.endswith('address') or _key == 'ansible_host':
|
|
host_hash[_key] = _value
|
|
|
|
return hostnames_ips
|
|
|
|
|
|
def _prepare_debug_logger():
|
|
log_fmt = "%(lineno)d - %(funcName)s: %(message)s"
|
|
logging.basicConfig(format=log_fmt, filename='inventory.log')
|
|
logger.setLevel(logging.DEBUG)
|
|
logger.info("Beginning new inventory run")
|
|
|
|
|
|
def main(config=None, check=False, debug=False, environment=None, **kwargs):
|
|
"""Run the main application.
|
|
|
|
:param config: ``str`` Directory from which to pull configs and overrides
|
|
:param check: ``bool`` Flag to enable check mode
|
|
:param debug: ``bool`` Flag to enable debug logging
|
|
:param kwargs: ``dict`` Dictionary of arbitrary arguments; mostly for
|
|
catching Ansible's required `--list` parameter without name shadowing
|
|
the `list` built-in.
|
|
:param environment: ``str`` Directory containing the base env.d
|
|
"""
|
|
if debug:
|
|
_prepare_debug_logger()
|
|
|
|
try:
|
|
user_defined_config = filesys.load_user_configuration(config)
|
|
except filesys.MissingDataSource as ex:
|
|
raise SystemExit(ex)
|
|
|
|
base_env_dir = environment
|
|
base_env = filesys.load_environment(base_env_dir, {})
|
|
environment = filesys.load_environment(config, base_env)
|
|
|
|
# Load existing inventory file if found
|
|
inventory, inv_path = filesys.load_inventory(config, INVENTORY_SKEL)
|
|
|
|
# Make a deep copy for change comparison
|
|
orig_inventory = copy.deepcopy(inventory)
|
|
|
|
# Save the users container cidr as a group variable
|
|
cidr_networks = user_defined_config.get('cidr_networks')
|
|
if not cidr_networks:
|
|
raise SystemExit('No container CIDR specified in user config')
|
|
|
|
user_cidr = None
|
|
if 'container' in cidr_networks:
|
|
user_cidr = cidr_networks['container']
|
|
elif 'management' in cidr_networks:
|
|
user_cidr = cidr_networks['management']
|
|
else:
|
|
overrides = user_defined_config.get('global_overrides')
|
|
pns = overrides.get('provider_networks', list())
|
|
for pn in pns:
|
|
p_net = pn.get('network')
|
|
if not p_net:
|
|
continue
|
|
q_name = p_net.get('ip_from_q')
|
|
if q_name and q_name in cidr_networks:
|
|
if (p_net.get('address_prefix') in ('container',
|
|
'management')):
|
|
if user_cidr is None:
|
|
user_cidr = []
|
|
user_cidr.append(cidr_networks[q_name])
|
|
|
|
if user_cidr is None:
|
|
raise SystemExit('No container or management network '
|
|
'specified in user config.')
|
|
|
|
# make sure user_defined config is self contained
|
|
_check_config_settings(
|
|
cidr_networks,
|
|
user_defined_config,
|
|
environment.get('container_skel')
|
|
)
|
|
|
|
# Add the container_cidr into the all global ansible group_vars
|
|
_parse_global_variables(user_cidr, inventory, user_defined_config)
|
|
|
|
# Load all of the IP addresses that we know are used and set the queue
|
|
ip.set_used_ips(user_defined_config, inventory)
|
|
user_defined_setup(user_defined_config, inventory)
|
|
skel_setup(environment, inventory)
|
|
|
|
_check_group_branches(
|
|
user_defined_config,
|
|
environment.get('physical_skel')
|
|
)
|
|
logger.debug("Loading physical skel.")
|
|
skel_load(
|
|
environment.get('physical_skel'),
|
|
inventory
|
|
)
|
|
logger.debug("Loading component skel")
|
|
skel_load(
|
|
environment.get('component_skel'),
|
|
inventory
|
|
)
|
|
container_skel_load(
|
|
environment.get('container_skel'),
|
|
inventory,
|
|
user_defined_config
|
|
)
|
|
|
|
# Look at inventory and ensure all entries have all required values.
|
|
_ensure_inventory_uptodate(
|
|
inventory=inventory,
|
|
container_skel=environment.get('container_skel'),
|
|
)
|
|
|
|
# Load the inventory json
|
|
inventory_json = json.dumps(
|
|
inventory,
|
|
indent=4,
|
|
separators=(',', ': '),
|
|
sort_keys=True
|
|
)
|
|
|
|
if check:
|
|
if _check_all_conf_groups_present(user_defined_config, environment):
|
|
return 'Configuration ok!'
|
|
|
|
# Save a list of all hosts and their given IP addresses
|
|
hostnames_ips = _collect_hostnames(inventory)
|
|
filesys.write_hostnames(config, hostnames_ips)
|
|
|
|
if logger.isEnabledFor(logging.DEBUG):
|
|
num_hosts = len(inventory['_meta']['hostvars'])
|
|
logger.debug("%d hosts found.", num_hosts)
|
|
|
|
# Save new dynamic inventory only if modified
|
|
if orig_inventory != inventory:
|
|
logger.debug("Saving modified inventory")
|
|
filesys.save_inventory(inventory_json, inv_path)
|
|
|
|
return inventory_json
|