262 lines
9.2 KiB
Python
Executable File
262 lines
9.2 KiB
Python
Executable File
# Copyright 2015 NEC Corporation. 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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from oslo_log import log as logging
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from oslo_utils import encodeutils
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import six
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from magnum.common import cert_manager
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from magnum.common import exception
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from magnum.common import short_id
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from magnum.common.x509 import operations as x509
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import magnum.conf
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import os
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import shutil
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import tempfile
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CONDUCTOR_CLIENT_NAME = six.u('Magnum-Conductor')
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LOG = logging.getLogger(__name__)
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CONF = magnum.conf.CONF
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def _generate_ca_cert(issuer_name, context=None):
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"""Generate and store ca_cert
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:param issuer_name: CA subject name
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:returns: CA cert uuid and CA cert, CA private key password
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"""
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ca_password = short_id.generate_id()
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ca_cert = x509.generate_ca_certificate(issuer_name,
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encryption_password=ca_password)
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ca_cert_ref = cert_manager.get_backend().CertManager.store_cert(
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certificate=ca_cert['certificate'],
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private_key=ca_cert['private_key'],
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private_key_passphrase=ca_password,
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name=issuer_name,
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context=context,
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)
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LOG.debug('CA cert is created: %s', ca_cert_ref)
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return ca_cert_ref, ca_cert, ca_password
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def _generate_client_cert(issuer_name, ca_cert, ca_password, context=None):
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"""Generate and store magnum_client_cert
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:param issuer_name: CA subject name
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:param ca_cert: CA certificate
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:param ca_password: CA private key password
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:returns: Magnum client cert uuid
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"""
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client_password = short_id.generate_id()
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# TODO(strigazi): set subject name and organization per driver
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# For RBAC kubernetes cluster we need the client to have:
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# subject_name: admin
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# organization_name system:masters
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# Non kubernetes drivers are not using the certificates fields
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# for authorization
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subject_name = 'admin'
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organization_name = 'system:masters'
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client_cert = x509.generate_client_certificate(
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issuer_name,
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subject_name,
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organization_name,
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ca_cert['private_key'],
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encryption_password=client_password,
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ca_key_password=ca_password,
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)
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magnum_cert_ref = cert_manager.get_backend().CertManager.store_cert(
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certificate=client_cert['certificate'],
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private_key=client_cert['private_key'],
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private_key_passphrase=client_password,
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name=CONDUCTOR_CLIENT_NAME,
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context=context
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)
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LOG.debug('Magnum client cert is created: %s', magnum_cert_ref)
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return magnum_cert_ref
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def _get_issuer_name(cluster):
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issuer_name = cluster.name
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# When user create a Cluster without name, the cluster.name is None.
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# We should use cluster.uuid as issuer name.
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if issuer_name is None:
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issuer_name = cluster.uuid
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return issuer_name
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def generate_certificates_to_cluster(cluster, context=None):
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"""Generate ca_cert and magnum client cert and set to cluster
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:param cluster: The cluster to set CA cert and magnum client cert
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:returns: CA cert uuid and magnum client cert uuid
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"""
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try:
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issuer_name = _get_issuer_name(cluster)
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LOG.debug('Start to generate certificates: %s', issuer_name)
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ca_cert_ref, ca_cert, ca_password = _generate_ca_cert(issuer_name,
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context=context)
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etcd_ca_cert_ref, _, _ = _generate_ca_cert(issuer_name,
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context=context)
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fp_ca_cert_ref, _, _ = _generate_ca_cert(issuer_name,
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context=context)
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magnum_cert_ref = _generate_client_cert(issuer_name,
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ca_cert,
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ca_password,
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context=context)
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cluster.ca_cert_ref = ca_cert_ref
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cluster.magnum_cert_ref = magnum_cert_ref
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cluster.etcd_ca_cert_ref = etcd_ca_cert_ref
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cluster.front_proxy_ca_cert_ref = fp_ca_cert_ref
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except Exception:
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LOG.exception('Failed to generate certificates for Cluster: %s',
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cluster.uuid)
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raise exception.CertificatesToClusterFailed(cluster_uuid=cluster.uuid)
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def get_cluster_ca_certificate(cluster, context=None, ca_cert_type=None):
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ref = cluster.ca_cert_ref
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if ca_cert_type == "etcd":
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ref = cluster.etcd_ca_cert_ref
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elif ca_cert_type in ["front_proxy", "front-proxy"]:
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ref = cluster.front_proxy_ca_cert_ref
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ca_cert = cert_manager.get_backend().CertManager.get_cert(
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ref,
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resource_ref=cluster.uuid,
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context=context
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)
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return ca_cert
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def get_cluster_magnum_cert(cluster, context=None):
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magnum_cert = cert_manager.get_backend().CertManager.get_cert(
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cluster.magnum_cert_ref,
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resource_ref=cluster.uuid,
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context=context
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)
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return magnum_cert
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def create_client_files(cluster, context=None):
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if not os.path.isdir(CONF.cluster.temp_cache_dir):
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LOG.debug("Certificates will not be cached in the filesystem: they "
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"will be created as tempfiles.")
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ca_cert = get_cluster_ca_certificate(cluster, context)
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magnum_cert = get_cluster_magnum_cert(cluster, context)
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ca_file = tempfile.NamedTemporaryFile(mode="w+")
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ca_file.write(encodeutils.safe_decode(ca_cert.get_certificate()))
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ca_file.flush()
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key_file = tempfile.NamedTemporaryFile(mode="w+")
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key_file.write(encodeutils.safe_decode(
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magnum_cert.get_decrypted_private_key()))
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key_file.flush()
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cert_file = tempfile.NamedTemporaryFile(mode="w+")
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cert_file.write(encodeutils.safe_decode(magnum_cert.get_certificate()))
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cert_file.flush()
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else:
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cached_cert_dir = os.path.join(CONF.cluster.temp_cache_dir,
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cluster.uuid)
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cached_ca_file = os.path.join(cached_cert_dir, 'ca.crt')
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cached_key_file = os.path.join(cached_cert_dir, 'client.key')
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cached_cert_file = os.path.join(cached_cert_dir, 'client.crt')
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if not os.path.isdir(cached_cert_dir):
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os.mkdir(cached_cert_dir)
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ca_cert = get_cluster_ca_certificate(cluster, context)
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magnum_cert = get_cluster_magnum_cert(cluster, context)
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ca_file = open(cached_ca_file, "w+")
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ca_file.write(encodeutils.safe_decode(ca_cert.get_certificate()))
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ca_file.flush()
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key_file = open(cached_key_file, "w+")
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key_file.write(encodeutils.safe_decode(
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magnum_cert.get_decrypted_private_key()))
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key_file.flush()
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cert_file = open(cached_cert_file, "w+")
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cert_file.write(
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encodeutils.safe_decode(magnum_cert.get_certificate()))
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cert_file.flush()
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os.chmod(cached_ca_file, 0o600)
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os.chmod(cached_key_file, 0o600)
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os.chmod(cached_cert_file, 0o600)
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else:
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ca_file = open(cached_ca_file, "r")
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key_file = open(cached_key_file, "r")
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cert_file = open(cached_cert_file, "r")
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return ca_file, key_file, cert_file
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def sign_node_certificate(cluster, csr, ca_cert_type=None, context=None):
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ref = cluster.ca_cert_ref
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if ca_cert_type == "etcd":
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ref = cluster.etcd_ca_cert_ref
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elif ca_cert_type in ["front_proxy", "front-proxy"]:
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ref = cluster.front_proxy_ca_cert_ref
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ca_cert = cert_manager.get_backend().CertManager.get_cert(
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ref,
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resource_ref=cluster.uuid,
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context=context
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)
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node_cert = x509.sign(csr,
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_get_issuer_name(cluster),
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ca_cert.get_private_key(),
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ca_cert.get_private_key_passphrase())
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return node_cert
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def delete_certificates_from_cluster(cluster, context=None):
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"""Delete ca cert and magnum client cert from cluster
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:param cluster: The cluster which has certs
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"""
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for cert_ref in ['ca_cert_ref', 'magnum_cert_ref']:
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try:
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cert_ref = getattr(cluster, cert_ref, None)
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if cert_ref:
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cert_manager.get_backend().CertManager.delete_cert(
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cert_ref, resource_ref=cluster.uuid, context=context)
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except Exception:
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LOG.warning("Deleting certs is failed for Cluster %s",
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cluster.uuid)
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def delete_client_files(cluster, context=None):
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cached_cert_dir = os.path.join(CONF.cluster.temp_cache_dir,
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cluster.uuid)
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try:
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if os.path.isdir(cached_cert_dir):
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shutil.rmtree(cached_cert_dir)
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except Exception:
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LOG.warning("Deleting client files failed for Cluster %s",
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cluster.uuid)
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