openstack/charm-cinder
Code Issues Proposed changes

Add support for tls-certificates relation

Browse Source 
Add support for the charm to request and receive certificates from
the tls-certificates relation.

Change-Id: I25c770272eff7be93deea5c42b4b4b19aeef9bb9
This commit is contained in:
Liam Young 2018-05-15 14:24:28 +00:00
parent 3462b9cf93
commit db0a66a4cf
12 changed files with 313 additions and 32 deletions
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1
hooks/certificates-relation-changed Symbolic link
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@ -0,0 +1 @@
cinder_hooks.py

1
hooks/certificates-relation-departed Symbolic link
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@ -0,0 +1 @@
cinder_hooks.py

1
hooks/certificates-relation-joined Symbolic link
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@ -0,0 +1 @@
cinder_hooks.py

5
hooks/charmhelpers/contrib/hahelpers/cluster.py
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@ -223,6 +223,11 @@ def https():
return True
if config_get('ssl_cert') and config_get('ssl_key'):
return True
for r_id in relation_ids('certificates'):
for unit in relation_list(r_id):
ca = relation_get('ca', rid=r_id, unit=unit)
if ca:
return True
for r_id in relation_ids('identity-service'):
for unit in relation_list(r_id):
# TODO - needs fixing for new helper as ssl_cert/key suffixes with CN

12
hooks/charmhelpers/contrib/openstack/amulet/utils.py
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@ -40,6 +40,7 @@ import novaclient
import pika
import swiftclient
from charmhelpers.core.decorators import retry_on_exception
from charmhelpers.contrib.amulet.utils import (
AmuletUtils
)
@ -423,6 +424,7 @@ class OpenStackAmuletUtils(AmuletUtils):
self.log.debug('Checking if tenant exists ({})...'.format(tenant))
return tenant in [t.name for t in keystone.tenants.list()]
@retry_on_exception(num_retries=5, base_delay=1)
def keystone_wait_for_propagation(self, sentry_relation_pairs,
api_version):
"""Iterate over list of sentry and relation tuples and verify that
@ -542,7 +544,7 @@ class OpenStackAmuletUtils(AmuletUtils):
return ep
def get_default_keystone_session(self, keystone_sentry,
openstack_release=None):
openstack_release=None, api_version=2):
"""Return a keystone session object and client object assuming standard
default settings
@ -557,12 +559,12 @@ class OpenStackAmuletUtils(AmuletUtils):
eyc
"""
self.log.debug('Authenticating keystone admin...')
api_version = 2
client_class = keystone_client.Client
# 11 => xenial_queens
if openstack_release and openstack_release >= 11:
api_version = 3
if api_version == 3 or (openstack_release and openstack_release >= 11):
client_class = keystone_client_v3.Client
api_version = 3
else:
client_class = keystone_client.Client
keystone_ip = keystone_sentry.info['public-address']
session, auth = self.get_keystone_session(
keystone_ip,

227
hooks/charmhelpers/contrib/openstack/cert_utils.py Normal file
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@ -0,0 +1,227 @@
# Copyright 2014-2018 Canonical Limited.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Common python helper functions used for OpenStack charm certificats.
import os
import json
from charmhelpers.contrib.network.ip import (
get_hostname,
resolve_network_cidr,
)
from charmhelpers.core.hookenv import (
local_unit,
network_get_primary_address,
config,
relation_get,
unit_get,
NoNetworkBinding,
log,
WARNING,
)
from charmhelpers.contrib.openstack.ip import (
ADMIN,
resolve_address,
get_vip_in_network,
INTERNAL,
PUBLIC,
ADDRESS_MAP)
from charmhelpers.core.host import (
mkdir,
write_file,
)
from charmhelpers.contrib.hahelpers.apache import (
install_ca_cert
)
class CertRequest(object):
"""Create a request for certificates to be generated
"""
def __init__(self, json_encode=True):
self.entries = []
self.hostname_entry = None
self.json_encode = json_encode
def add_entry(self, net_type, cn, addresses):
"""Add a request to the batch
:param net_type: str netwrok space name request is for
:param cn: str Canonical Name for certificate
:param addresses: [] List of addresses to be used as SANs
"""
self.entries.append({
'cn': cn,
'addresses': addresses})
def add_hostname_cn(self):
"""Add a request for the hostname of the machine"""
ip = unit_get('private-address')
addresses = [ip]
# If a vip is being used without os-hostname config or
# network spaces then we need to ensure the local units
# cert has the approriate vip in the SAN list
vip = get_vip_in_network(resolve_network_cidr(ip))
if vip:
addresses.append(vip)
self.hostname_entry = {
'cn': get_hostname(ip),
'addresses': addresses}
def add_hostname_cn_ip(self, addresses):
"""Add an address to the SAN list for the hostname request
:param addr: [] List of address to be added
"""
for addr in addresses:
if addr not in self.hostname_entry['addresses']:
self.hostname_entry['addresses'].append(addr)
def get_request(self):
"""Generate request from the batched up entries
"""
if self.hostname_entry:
self.entries.append(self.hostname_entry)
request = {}
for entry in self.entries:
sans = sorted(list(set(entry['addresses'])))
request[entry['cn']] = {'sans': sans}
if self.json_encode:
return {'cert_requests': json.dumps(request, sort_keys=True)}
else:
return {'cert_requests': request}
def get_certificate_request(json_encode=True):
"""Generate a certificatee requests based on the network confioguration
"""
req = CertRequest(json_encode=json_encode)
req.add_hostname_cn()
# Add os-hostname entries
for net_type in [INTERNAL, ADMIN, PUBLIC]:
net_config = config(ADDRESS_MAP[net_type]['override'])
try:
net_addr = resolve_address(endpoint_type=net_type)
ip = network_get_primary_address(
ADDRESS_MAP[net_type]['binding'])
addresses = [net_addr, ip]
vip = get_vip_in_network(resolve_network_cidr(ip))
if vip:
addresses.append(vip)
if net_config:
req.add_entry(
net_type,
net_config,
addresses)
else:
# There is network address with no corresponding hostname.
# Add the ip to the hostname cert to allow for this.
req.add_hostname_cn_ip(addresses)
except NoNetworkBinding:
log("Skipping request for certificate for ip in {} space, no "
"local address found".format(net_type), WARNING)
return req.get_request()
def create_ip_cert_links(ssl_dir, custom_hostname_link=None):
"""Create symlinks for SAN records
:param ssl_dir: str Directory to create symlinks in
:param custom_hostname_link: str Additional link to be created
"""
hostname = get_hostname(unit_get('private-address'))
hostname_cert = os.path.join(
ssl_dir,
'cert_{}'.format(hostname))
hostname_key = os.path.join(
ssl_dir,
'key_{}'.format(hostname))
# Add links to hostname cert, used if os-hostname vars not set
for net_type in [INTERNAL, ADMIN, PUBLIC]:
try:
addr = resolve_address(endpoint_type=net_type)
cert = os.path.join(ssl_dir, 'cert_{}'.format(addr))
key = os.path.join(ssl_dir, 'key_{}'.format(addr))
if os.path.isfile(hostname_cert) and not os.path.isfile(cert):
os.symlink(hostname_cert, cert)
os.symlink(hostname_key, key)
except NoNetworkBinding:
log("Skipping creating cert symlink for ip in {} space, no "
"local address found".format(net_type), WARNING)
if custom_hostname_link:
custom_cert = os.path.join(
ssl_dir,
'cert_{}'.format(custom_hostname_link))
custom_key = os.path.join(
ssl_dir,
'key_{}'.format(custom_hostname_link))
if os.path.isfile(hostname_cert) and not os.path.isfile(custom_cert):
os.symlink(hostname_cert, custom_cert)
os.symlink(hostname_key, custom_key)
def install_certs(ssl_dir, certs, chain=None):
"""Install the certs passed into the ssl dir and append the chain if
provided.
:param ssl_dir: str Directory to create symlinks in
:param certs: {} {'cn': {'cert': 'CERT', 'key': 'KEY'}}
:param chain: str Chain to be appended to certs
"""
for cn, bundle in certs.items():
cert_filename = 'cert_{}'.format(cn)
key_filename = 'key_{}'.format(cn)
cert_data = bundle['cert']
if chain:
# Append chain file so that clients that trust the root CA will
# trust certs signed by an intermediate in the chain
cert_data = cert_data + chain
write_file(
path=os.path.join(ssl_dir, cert_filename),
content=cert_data, perms=0o640)
write_file(
path=os.path.join(ssl_dir, key_filename),
content=bundle['key'], perms=0o640)
def process_certificates(service_name, relation_id, unit,
custom_hostname_link=None):
"""Process the certificates supplied down the relation
:param service_name: str Name of service the certifcates are for.
:param relation_id: str Relation id providing the certs
:param unit: str Unit providing the certs
:param custom_hostname_link: str Name of custom link to create
"""
data = relation_get(rid=relation_id, unit=unit)
ssl_dir = os.path.join('/etc/apache2/ssl/', service_name)
mkdir(path=ssl_dir)
name = local_unit().replace('/', '_')
certs = data.get('{}.processed_requests'.format(name))
chain = data.get('chain')
ca = data.get('ca')
if certs:
certs = json.loads(certs)
install_ca_cert(ca.encode())
install_certs(ssl_dir, certs, chain)
create_ip_cert_links(
ssl_dir,
custom_hostname_link=custom_hostname_link)

51
hooks/charmhelpers/contrib/openstack/context.py
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@ -789,17 +789,18 @@ class ApacheSSLContext(OSContextGenerator):
ssl_dir = os.path.join('/etc/apache2/ssl/', self.service_namespace)
mkdir(path=ssl_dir)
cert, key = get_cert(cn)
if cn:
cert_filename = 'cert_{}'.format(cn)
key_filename = 'key_{}'.format(cn)
else:
cert_filename = 'cert'
key_filename = 'key'
if cert and key:
if cn:
cert_filename = 'cert_{}'.format(cn)
key_filename = 'key_{}'.format(cn)
else:
cert_filename = 'cert'
key_filename = 'key'
write_file(path=os.path.join(ssl_dir, cert_filename),
content=b64decode(cert), perms=0o640)
write_file(path=os.path.join(ssl_dir, key_filename),
content=b64decode(key), perms=0o640)
write_file(path=os.path.join(ssl_dir, cert_filename),
content=b64decode(cert), perms=0o640)
write_file(path=os.path.join(ssl_dir, key_filename),
content=b64decode(key), perms=0o640)
def configure_ca(self):
ca_cert = get_ca_cert()
@ -871,23 +872,31 @@ class ApacheSSLContext(OSContextGenerator):
if not self.external_ports or not https():
return {}
self.configure_ca()
use_keystone_ca = True
for rid in relation_ids('certificates'):
if related_units(rid):
use_keystone_ca = False
if use_keystone_ca:
self.configure_ca()
self.enable_modules()
ctxt = {'namespace': self.service_namespace,
'endpoints': [],
'ext_ports': []}
cns = self.canonical_names()
if cns:
for cn in cns:
self.configure_cert(cn)
else:
# Expect cert/key provided in config (currently assumed that ca
# uses ip for cn)
for net_type in (INTERNAL, ADMIN, PUBLIC):
cn = resolve_address(endpoint_type=net_type)
self.configure_cert(cn)
if use_keystone_ca:
cns = self.canonical_names()
if cns:
for cn in cns:
self.configure_cert(cn)
else:
# Expect cert/key provided in config (currently assumed that ca
# uses ip for cn)
for net_type in (INTERNAL, ADMIN, PUBLIC):
cn = resolve_address(endpoint_type=net_type)
self.configure_cert(cn)
addresses = self.get_network_addresses()
for address, endpoint in addresses:

10
hooks/charmhelpers/contrib/openstack/ip.py
View File

@ -184,3 +184,13 @@ def resolve_address(endpoint_type=PUBLIC, override=True):
"clustered=%s)" % (net_type, clustered))
return resolved_address
def get_vip_in_network(network):
matching_vip = None
vips = config('vip')
if vips:
for vip in vips.split():
if is_address_in_network(network, vip):
matching_vip = vip
return matching_vip

18
hooks/cinder_hooks.py
View File

@ -116,6 +116,10 @@ from charmhelpers.contrib.openstack.ip import (
canonical_url,
PUBLIC, INTERNAL, ADMIN
)
from charmhelpers.contrib.openstack.cert_utils import (
get_certificate_request,
process_certificates,
)
from charmhelpers.contrib.openstack.context import ADDRESS_TYPES
from charmhelpers.contrib.charmsupport import nrpe
@ -615,6 +619,20 @@ def update_status():
log('Updating status.')
@hooks.hook('certificates-relation-joined')
def certs_joined(relation_id=None):
relation_set(
relation_id=relation_id,
relation_settings=get_certificate_request())
@hooks.hook('certificates-relation-changed')
@restart_on_change(restart_map())
def certs_changed(relation_id=None, unit=None):
process_certificates('cinder', relation_id, unit)
configure_https()
if __name__ == '__main__':
try:
hooks.execute(sys.argv)

2
metadata.yaml
View File

@ -42,6 +42,8 @@ requires:
backup-backend:
interface: cinder-backup
scope: container
certificates:
interface: tls-certificates
peers:
cluster:
interface: cinder-ha

12
tests/charmhelpers/contrib/openstack/amulet/utils.py
View File

@ -40,6 +40,7 @@ import novaclient
import pika
import swiftclient
from charmhelpers.core.decorators import retry_on_exception
from charmhelpers.contrib.amulet.utils import (
AmuletUtils
)
@ -423,6 +424,7 @@ class OpenStackAmuletUtils(AmuletUtils):
self.log.debug('Checking if tenant exists ({})...'.format(tenant))
return tenant in [t.name for t in keystone.tenants.list()]
@retry_on_exception(num_retries=5, base_delay=1)
def keystone_wait_for_propagation(self, sentry_relation_pairs,
api_version):
"""Iterate over list of sentry and relation tuples and verify that
@ -542,7 +544,7 @@ class OpenStackAmuletUtils(AmuletUtils):
return ep
def get_default_keystone_session(self, keystone_sentry,
openstack_release=None):
openstack_release=None, api_version=2):
"""Return a keystone session object and client object assuming standard
default settings
@ -557,12 +559,12 @@ class OpenStackAmuletUtils(AmuletUtils):
eyc
"""
self.log.debug('Authenticating keystone admin...')
api_version = 2
client_class = keystone_client.Client
# 11 => xenial_queens
if openstack_release and openstack_release >= 11:
api_version = 3
if api_version == 3 or (openstack_release and openstack_release >= 11):
client_class = keystone_client_v3.Client
api_version = 3
else:
client_class = keystone_client.Client
keystone_ip = keystone_sentry.info['public-address']
session, auth = self.get_keystone_session(
keystone_ip,

5
unit_tests/test_cinder_contexts.py
View File

@ -150,6 +150,7 @@ class TestCinderContext(CharmTestCase):
mod_ch_context = 'charmhelpers.contrib.openstack.context'
@patch('charmhelpers.contrib.openstack.context.relation_ids')
@patch('charmhelpers.contrib.openstack.context.resolve_address')
@patch('charmhelpers.contrib.openstack.ip.config')
@patch('%s.ApacheSSLContext.canonical_names' % (mod_ch_context))
@ -170,7 +171,9 @@ class TestCinderContext(CharmTestCase):
mock_configure_ca,
mock_cfg_canonical_names,
mock_ip_config,
mock_ip_network_get):
mock_ip_network_get,
mock_relation_ids):
mock_relation_ids.return_value = []
mock_https.return_value = True
mock_unit_get.return_value = '1.2.3.4'
mock_ip_network_get.return_value = '1.2.3.4'