4bc5c71a3e
This grabs the fernet keys from the passwords environment variable and performs a rotation based on those keys. Subsequently, this parameter will be passed to t-h-t in order for puppet to persist the rotation on a stack update. Also, further work will be done in order for the deployer to be able to do this without having to do a full stack update. bp keystone-fernet-rotation Change-Id: I18a3669e04021ad499973073a91e6bf78741ed20
125 lines
4.5 KiB
Python
125 lines
4.5 KiB
Python
# Copyright 2016 Red Hat, Inc.
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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 base64
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import logging
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import os
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import paramiko
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import struct
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import time
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import uuid
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import passlib.utils as passutils
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import six
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from tripleo_common import constants
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_MIN_PASSWORD_SIZE = 25
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KEYSTONE_FERNET_REPO = '/etc/keystone/fernet-keys/'
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LOG = logging.getLogger(__name__)
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def generate_passwords(mistralclient=None, stack_env=None):
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"""Create the passwords needed for deploying OpenStack via t-h-t.
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This will create the set of passwords required by the undercloud and
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overcloud installers that use tripleo-heat-templates and return them
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as a dict. The mistralclient is optional and only used to obtain
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the previously stored SnmpdReadonlyUserPassword supplied by the
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undercloud to the overcloud deployment.
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"""
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passwords = {}
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for name in constants.PASSWORD_PARAMETER_NAMES:
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# Support users upgrading from Mitaka or otherwise creating a plan for
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# a Heat stack that already exists.
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if stack_env and name in stack_env.get('parameter_defaults', {}):
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passwords[name] = stack_env['parameter_defaults'][name]
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elif name.startswith("Ceph"):
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if name == "CephClusterFSID":
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# The FSID must be a UUID
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passwords[name] = six.text_type(uuid.uuid1())
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else:
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# CephX keys aren't random strings
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passwords[name] = create_cephx_key()
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# Since by default generate_password uses all digits and ascii upper
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# & lowercase letters, it provides ~5.95 entropy per character.
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# Make the size of the default authkey 4096 bytes, which should give us
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# ~24000 bits of randomness
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elif name.startswith("PacemakerRemoteAuthkey"):
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passwords[name] = passutils.generate_password(
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size=4096)
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# The underclouds SnmpdReadonlyUserPassword is stored in a mistral env
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# for the overcloud.
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elif mistralclient and name == 'SnmpdReadonlyUserPassword':
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passwords[name] = get_snmpd_readonly_user_password(mistralclient)
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elif name in ('KeystoneCredential0', 'KeystoneCredential1',
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'KeystoneFernetKey0', 'KeystoneFernetKey1'):
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passwords[name] = create_keystone_credential()
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elif name == 'KeystoneFernetKeys':
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passwords[name] = create_fernet_keys_repo_structure_and_keys()
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elif name == 'MigrationSshKey':
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passwords[name] = create_ssh_keypair()
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else:
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passwords[name] = passutils.generate_password(
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size=_MIN_PASSWORD_SIZE)
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return passwords
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def create_fernet_keys_repo_structure_and_keys():
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return {
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KEYSTONE_FERNET_REPO + '0': {
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'content': create_keystone_credential()},
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KEYSTONE_FERNET_REPO + '1': {
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'content': create_keystone_credential()}
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}
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def create_cephx_key():
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# NOTE(gfidente): Taken from
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# https://github.com/ceph/ceph-deploy/blob/master/ceph_deploy/new.py#L21
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key = os.urandom(16)
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header = struct.pack("<hiih", 1, int(time.time()), 0, len(key))
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return base64.b64encode(header + key)
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def get_snmpd_readonly_user_password(mistralclient):
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mistral_env = mistralclient.environments.get("tripleo.undercloud-config")
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try:
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return mistral_env.variables['undercloud_ceilometer_snmpd_password']
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except KeyError:
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LOG.error("Undercloud ceilometer SNMPd password missing!")
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raise
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def create_keystone_credential():
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return base64.urlsafe_b64encode(os.urandom(32))
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def create_ssh_keypair(comment=None, bits=2048):
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"""Generate an ssh keypair for use on the overcloud"""
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if comment is None:
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comment = "Generated by TripleO"
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key = paramiko.RSAKey.generate(bits)
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keyout = six.StringIO()
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key.write_private_key(keyout)
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private_key = keyout.getvalue()
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public_key = '{} {} {}'.format(key.get_name(), key.get_base64(), comment)
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return {
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'private_key': private_key,
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'public_key': public_key,
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}
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