1c68ae389b
This addresses the ansible aspects of fernet key bootstrapping as well as distributed key rotation. - Bootstrapping is handled in the same way as keystone bootstrap. - A new keystone-fernet and keystone-ssh container is created to allow the nodes to communicate with each other (taken from nova-ssh). - The keystone-fernet is a keystone container with crontab installed. This will handle key rotations through keystone-manage and trigger an rsync to push new tokens to other nodes. - Key rotation is setup to be balanced across the keystone nodes using a round-robbin style. This ensures that any node failures will not stop the keys from rotating. This is configured by a desired token expiration time which then determines the cron scheduling for each node as well as the number of fernet tokens in rotation. - Ability for recovered node to resync with the cluster. When a node starts it will run sanity checks to ensure that its fernet tokens are not stale. If they are it will rsync with other nodes to ensure its tokens are up to date. The Docker component is implemented in: https://review.openstack.org/#/c/349366 Change-Id: I15052c25a1d1149d364236f10ced2e2346119738 Implements: blueprint keystone-fernet-token
85 lines
2.5 KiB
Python
Executable File
85 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python
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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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import argparse
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import os
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import random
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import string
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import uuid
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import yaml
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from Crypto.PublicKey import RSA
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def generate_RSA(bits=2048):
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new_key = RSA.generate(bits, os.urandom)
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private_key = new_key.exportKey("PEM")
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public_key = new_key.publickey().exportKey("OpenSSH")
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return private_key, public_key
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument(
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'-p', '--passwords', type=str,
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default=os.path.abspath('/etc/kolla/passwords.yml'),
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help=('Path to the passwords yml file'))
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args = parser.parse_args()
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passwords_file = os.path.expanduser(args.passwords)
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# These keys should be random uuids
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uuid_keys = ['ceph_cluster_fsid', 'rbd_secret_uuid']
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# SSH key pair
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ssh_keys = ['kolla_ssh_key', 'nova_ssh_key', 'keystone_ssh_key']
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# If these keys are None, leave them as None
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blank_keys = ['docker_registry_password']
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# length of password
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length = 40
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with open(passwords_file, 'r') as f:
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passwords = yaml.load(f.read())
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for k, v in passwords.items():
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if (k in ssh_keys and
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(v is None
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or v.get('public_key') is None
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and v.get('private_key') is None)):
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private_key, public_key = generate_RSA()
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passwords[k] = {
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'private_key': private_key,
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'public_key': public_key
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}
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continue
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if v is None:
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if k in blank_keys and v is None:
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continue
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if k in uuid_keys:
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passwords[k] = str(uuid.uuid4())
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else:
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passwords[k] = ''.join([
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random.SystemRandom().choice(
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string.ascii_letters + string.digits)
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for n in range(length)
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])
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with open(passwords_file, 'w') as f:
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f.write(yaml.dump(passwords, default_flow_style=False))
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if __name__ == '__main__':
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main()
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