openstack/charm-cinder
Code Issues Proposed changes
8641e81498
charm-cinder/hooks/cinder_utils.py
Liam Young 8641e81498 Move backends into their own sections 
Using DEFAULT section to configure drivers is not supported since
Ocata. This change lists backends in enabled_backends.

Note: Using sectional config causes the os-vol-host-attr:host
volume attribute to change which invalidates existing volumes.
A subsequant change is needed to add an action for renaming
the host attribute of existing volumes *1

*1 https://docs.openstack.org/admin-guide/blockstorage-multi-backend.html#enable-multiple-storage-back-ends

Partial-Bug: #1665272
Change-Id: I22c3e74b0874c051bee89e4609088facf95b4664
2017-02-20 15:32:00 +00:00

1093 lines
36 KiB
Python
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# Copyright 2016 Canonical Ltd
#
# 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.
import os
import shutil
import subprocess
import uuid
from copy import deepcopy
from collections import OrderedDict
from copy import copy
from charmhelpers.contrib.python.packages import (
pip_install,
)
from charmhelpers.core.hookenv import (
charm_dir,
config,
local_unit,
relation_get,
relation_set,
relation_ids,
related_units,
log,
DEBUG,
service_name,
)
from charmhelpers.fetch import (
apt_upgrade,
apt_update,
apt_install,
add_source
)
from charmhelpers.core.host import (
adduser,
add_group,
add_user_to_group,
lsb_release,
mkdir,
mounts,
umount,
service_restart,
service_stop,
service_start,
write_file,
)
from charmhelpers.contrib.openstack.alternatives import install_alternative
from charmhelpers.contrib.hahelpers.cluster import (
is_elected_leader,
get_hacluster_config,
)
from charmhelpers.contrib.storage.linux.utils import (
is_block_device,
zap_disk,
is_device_mounted,
)
from charmhelpers.contrib.storage.linux.lvm import (
create_lvm_physical_volume,
create_lvm_volume_group,
deactivate_lvm_volume_group,
is_lvm_physical_volume,
remove_lvm_physical_volume,
list_lvm_volume_group
)
from charmhelpers.contrib.storage.linux.loopback import (
ensure_loopback_device,
)
from charmhelpers.contrib.openstack import (
templating,
context,
)
from charmhelpers.contrib.openstack.utils import (
configure_installation_source,
get_os_codename_install_source,
git_clone_and_install,
git_default_repos,
git_generate_systemd_init_files,
git_install_requested,
git_pip_venv_dir,
git_src_dir,
git_yaml_value,
os_release,
make_assess_status_func,
pause_unit,
resume_unit,
is_unit_paused_set,
os_application_version_set,
token_cache_pkgs,
enable_memcache,
)
from charmhelpers.core.decorators import (
retry_on_exception,
)
from charmhelpers.core.templating import render
import cinder_contexts
COMMON_PACKAGES = [
'apache2',
'cinder-common',
'gdisk',
'haproxy',
'librbd1', # bug 1440948 vol-from-img
'python-jinja2',
'python-keystoneclient',
'python-mysqldb',
'python-psycopg2',
'qemu-utils',
]
API_PACKAGES = ['cinder-api']
VOLUME_PACKAGES = ['cinder-volume']
SCHEDULER_PACKAGES = ['cinder-scheduler']
BASE_GIT_PACKAGES = [
'libffi-dev',
'libmysqlclient-dev',
'libssl-dev',
'libxml2-dev',
'libxslt1-dev',
'libyaml-dev',
'lvm2',
'openstack-pkg-tools',
'python-dev',
'python-pip',
'python-setuptools',
'zlib1g-dev',
]
# ubuntu packages that should not be installed when deploying from source
GIT_PACKAGE_BLACKLIST = [
'cinder-api',
'cinder-common',
'cinder-scheduler',
'cinder-volume',
'python-keystoneclient',
]
DEFAULT_LOOPBACK_SIZE = '5G'
# Cluster resource used to determine leadership when hacluster'd
CLUSTER_RES = 'grp_cinder_vips'
CINDER_DB_INIT_RKEY = 'cinder-db-initialised'
CINDER_DB_INIT_ECHO_RKEY = 'cinder-db-initialised-echo'
class CinderCharmError(Exception):
pass
CINDER_CONF_DIR = "/etc/cinder"
CINDER_CONF = '%s/cinder.conf' % CINDER_CONF_DIR
CINDER_API_CONF = '%s/api-paste.ini' % CINDER_CONF_DIR
CEPH_CONF = '/etc/ceph/ceph.conf'
CHARM_CEPH_CONF = '/var/lib/charm/{}/ceph.conf'
HAPROXY_CONF = '/etc/haproxy/haproxy.cfg'
APACHE_SITE_CONF = '/etc/apache2/sites-available/openstack_https_frontend'
APACHE_SITE_24_CONF = '/etc/apache2/sites-available/' \
'openstack_https_frontend.conf'
MEMCACHED_CONF = '/etc/memcached.conf'
WSGI_CINDER_API_CONF = '/etc/apache2/sites-enabled/wsgi-openstack-api.conf'
PACKAGE_CINDER_API_CONF = '/etc/apache2/sites-enabled/cinder-wsgi.conf'
VERSION_PACKAGE = 'cinder-common'
TEMPLATES = 'templates/'
# The interface is said to be satisfied if anyone of the interfaces in
# the
# list has a complete context.
REQUIRED_INTERFACES = {
'database': ('shared-db', 'pgsql-db'),
'messaging': ('amqp',),
'identity': ('identity-service',),
}
def required_interfaces():
"""Provide the required charm interfaces based on configured roles."""
_interfaces = copy(REQUIRED_INTERFACES)
if not service_enabled('api'):
# drop requirement for identity interface
_interfaces.pop('identity')
return _interfaces
def ceph_config_file():
return CHARM_CEPH_CONF.format(service_name())
# Map config files to hook contexts and services that will be associated
# with file in restart_on_changes()'s service map.
BASE_RESOURCE_MAP = OrderedDict([
(CINDER_CONF, {
'contexts': [context.SharedDBContext(ssl_dir=CINDER_CONF_DIR),
context.PostgresqlDBContext(),
context.AMQPContext(ssl_dir=CINDER_CONF_DIR),
context.ImageServiceContext(),
context.OSConfigFlagContext(),
context.SyslogContext(),
cinder_contexts.CephContext(),
cinder_contexts.HAProxyContext(),
cinder_contexts.ImageServiceContext(),
cinder_contexts.CinderSubordinateConfigContext(
interface=['storage-backend', 'backup-backend'],
service='cinder',
config_file=CINDER_CONF),
cinder_contexts.StorageBackendContext(),
cinder_contexts.LoggingConfigContext(),
context.IdentityServiceContext(
service='cinder',
service_user='cinder'),
context.BindHostContext(),
context.WorkerConfigContext(),
cinder_contexts.RegionContext(),
context.InternalEndpointContext(),
cinder_contexts.VolumeUsageAuditContext(),
context.MemcacheContext(),
cinder_contexts.SectionalConfigContext(),
cinder_contexts.LVMContext()],
'services': ['cinder-api', 'cinder-volume', 'cinder-scheduler',
'haproxy']
}),
(CINDER_API_CONF, {
'contexts': [context.IdentityServiceContext()],
'services': ['cinder-api'],
}),
(ceph_config_file(), {
'contexts': [context.CephContext()],
'services': ['cinder-volume']
}),
(HAPROXY_CONF, {
'contexts': [context.HAProxyContext(singlenode_mode=True),
cinder_contexts.HAProxyContext()],
'services': ['haproxy'],
}),
(APACHE_SITE_CONF, {
'contexts': [cinder_contexts.ApacheSSLContext()],
'services': ['apache2'],
}),
(APACHE_SITE_24_CONF, {
'contexts': [cinder_contexts.ApacheSSLContext()],
'services': ['apache2'],
}),
])
def register_configs(release=None):
"""Register config files with their respective contexts.
Regstration of some configs may not be required depending on
existing of certain relations.
"""
# if called without anything installed (eg during install hook)
# just default to earliest supported release. configs dont get touched
# till post-install, anyway.
release = release or os_release('cinder-common', base='icehouse')
configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
openstack_release=release)
for cfg, rscs in resource_map().iteritems():
configs.register(cfg, rscs['contexts'])
return configs
def resource_map(release=None):
"""
Dynamically generate a map of resources that will be managed for a single
hook execution.
"""
resource_map = deepcopy(BASE_RESOURCE_MAP)
if relation_ids('backup-backend'):
resource_map[CINDER_CONF]['services'].append('cinder-backup')
resource_map[ceph_config_file()]['services'].append('cinder-backup')
if relation_ids('ceph'):
# need to create this early, new peers will have a relation during
# registration # before they've run the ceph hooks to create the
# directory.
# !!! FIX: These side effects seem inappropriate for this method
mkdir(os.path.dirname(CEPH_CONF))
mkdir(os.path.dirname(ceph_config_file()))
# Install ceph config as an alternative for co-location with
# ceph and ceph-osd charm - cinder ceph.conf will be
# lower priority than both of these but thats OK
if not os.path.exists(ceph_config_file()):
# touch file for pre-templated generation
open(ceph_config_file(), 'w').close()
install_alternative(os.path.basename(CEPH_CONF),
CEPH_CONF, ceph_config_file())
else:
resource_map.pop(ceph_config_file())
if os.path.exists('/etc/apache2/conf-available'):
resource_map.pop(APACHE_SITE_CONF)
else:
resource_map.pop(APACHE_SITE_24_CONF)
# Remove services from map which are not enabled by user config
for cfg in resource_map.keys():
resource_map[cfg]['services'] = \
filter_services(resource_map[cfg]['services'])
if enable_memcache(source=config()['openstack-origin']):
resource_map[MEMCACHED_CONF] = {
'contexts': [context.MemcacheContext()],
'services': ['memcached']}
if run_in_apache():
for cfile in resource_map:
svcs = resource_map[cfile]['services']
if 'cinder-api' in svcs:
svcs.remove('cinder-api')
if 'apache2' not in svcs:
svcs.append('apache2')
wsgi_script = "/usr/bin/cinder-wsgi"
resource_map[WSGI_CINDER_API_CONF] = {
'contexts': [context.WSGIWorkerConfigContext(name="cinder",
script=wsgi_script),
cinder_contexts.HAProxyContext()],
'services': ['apache2']
}
return resource_map
def filter_services(svcs):
'''Remove services not enabled by user config from a list of services
@param svcs: List of services
@returns : List of enabled services
'''
return [s for s in svcs
if service_enabled(s.lstrip('cinder-')) or
not s.startswith('cinder')]
def juju_log(msg):
log('[cinder] %s' % msg)
def determine_packages():
'''Determine list of packages required for the currently enabled services.
:returns: list of package names
'''
pkgs = copy(COMMON_PACKAGES)
for s, p in [('api', API_PACKAGES),
('volume', VOLUME_PACKAGES),
('scheduler', SCHEDULER_PACKAGES)]:
if service_enabled(s):
pkgs += p
if git_install_requested():
pkgs.extend(BASE_GIT_PACKAGES)
# don't include packages that will be installed from git
for p in GIT_PACKAGE_BLACKLIST:
pkgs.remove(p)
pkgs.extend(token_cache_pkgs(source=config()['openstack-origin']))
return pkgs
def service_enabled(service):
'''Determine if a specific cinder service is enabled in
charm configuration.
:param service: str: cinder service name to query (volume, scheduler, api,
all)
:returns: boolean: True if service is enabled in config, False if not.
'''
enabled = config()['enabled-services']
if enabled == 'all':
return True
return service in enabled
def restart_map():
'''Determine the correct resource map to be passed to
charmhelpers.core.restart_on_change() based on the services configured.
:returns: dict: A dictionary mapping config file to lists of services
that should be restarted when file changes.
'''
return OrderedDict([(cfg, v['services'])
for cfg, v in resource_map().iteritems()
if v['services']])
def enabled_services():
m = restart_map()
svcs = set()
for t in m.iteritems():
svcs.update(t[1])
return list(svcs)
def services():
''' Returns a list of services associate with this charm '''
_services = []
for v in restart_map().values():
_services = _services + v
return list(set(_services))
def reduce_lvm_volume_group_missing(volume_group, extra_args=None):
'''
Remove all missing physical volumes from the volume group, if there
are no logical volumes allocated on them.
:param volume_group: str: Name of volume group to reduce.
:param extra_args: list: List of extra args to pass to vgreduce
'''
if extra_args is None:
extra_args = []
command = ['vgreduce', '--removemissing'] + extra_args + [volume_group]
subprocess.check_call(command)
def extend_lvm_volume_group(volume_group, block_device):
'''
Extend an LVM volume group onto a given block device.
Assumes block device has already been initialized as an LVM PV.
:param volume_group: str: Name of volume group to create.
:block_device: str: Full path of PV-initialized block device.
'''
subprocess.check_call(['vgextend', volume_group, block_device])
def lvm_volume_group_exists(volume_group):
"""Check for the existence of a volume group.
:param volume_group: str: Name of volume group.
"""
try:
subprocess.check_call(['vgdisplay', volume_group])
except subprocess.CalledProcessError:
return False
else:
return True
def remove_lvm_volume_group(volume_group):
"""Remove a volume group.
:param volume_group: str: Name of volume group to remove.
"""
subprocess.check_call(['vgremove', '--force', volume_group])
def ensure_lvm_volume_group_non_existent(volume_group):
"""Remove volume_group if it exists.
:param volume_group: str: Name of volume group.
"""
if not lvm_volume_group_exists(volume_group):
return
remove_lvm_volume_group(volume_group)
def log_lvm_info():
"""Log some useful information about how LVM is setup."""
pvscan_output = subprocess.check_output(['pvscan'])
juju_log('pvscan: %s' % pvscan_output)
def configure_lvm_storage(block_devices, volume_group, overwrite=False,
remove_missing=False, remove_missing_force=False):
''' Configure LVM storage on the list of block devices provided
:param block_devices: list: List of whitelisted block devices to detect
and use if found
:param overwrite: bool: Scrub any existing block data if block device is
not already in-use
:param remove_missing: bool: Remove missing physical volumes from volume
group if logical volume not allocated on them
:param remove_missing_force: bool: Remove missing physical volumes from
volume group even if logical volumes are allocated
on them. Overrides 'remove_missing' if set.
'''
log_lvm_info()
devices = []
for block_device in block_devices:
(block_device, size) = _parse_block_device(block_device)
if not is_device_mounted(block_device):
if size == 0 and is_block_device(block_device):
devices.append(block_device)
elif size > 0:
devices.append(ensure_loopback_device(block_device, size))
# NOTE(jamespage)
# might need todo an initial one-time scrub on install if need be
vg_found = False
new_devices = []
for device in devices:
if not is_lvm_physical_volume(device):
# Unused device
if overwrite is True or not has_partition_table(device):
prepare_volume(device)
new_devices.append(device)
elif (is_lvm_physical_volume(device) and
list_lvm_volume_group(device) != volume_group):
# Existing LVM but not part of required VG or new device
if overwrite is True:
prepare_volume(device)
new_devices.append(device)
elif (is_lvm_physical_volume(device) and
list_lvm_volume_group(device) == volume_group):
# Mark vg as found
vg_found = True
log_lvm_info()
if vg_found is False and len(new_devices) > 0:
if overwrite:
ensure_lvm_volume_group_non_existent(volume_group)
# Create new volume group from first device
create_lvm_volume_group(volume_group, new_devices[0])
new_devices.remove(new_devices[0])
# Remove missing physical volumes from volume group
if remove_missing_force:
reduce_lvm_volume_group_missing(volume_group, extra_args=['--force'])
elif remove_missing:
reduce_lvm_volume_group_missing(volume_group)
if len(new_devices) > 0:
# Extend the volume group as required
for new_device in new_devices:
extend_lvm_volume_group(volume_group, new_device)
log_lvm_info()
def prepare_volume(device):
clean_storage(device)
create_lvm_physical_volume(device)
def has_partition_table(block_device):
out = subprocess.check_output(['fdisk', '-l', block_device],
stderr=subprocess.STDOUT)
return "doesn't contain a valid partition" not in out
def clean_storage(block_device):
'''Ensures a block device is clean. That is:
- unmounted
- any lvm volume groups are deactivated
- any lvm physical device signatures removed
- partition table wiped
:param block_device: str: Full path to block device to clean.
'''
for mp, d in mounts():
if d == block_device:
juju_log('clean_storage(): Found %s mounted @ %s, unmounting.' %
(d, mp))
umount(mp, persist=True)
if is_lvm_physical_volume(block_device):
deactivate_lvm_volume_group(block_device)
remove_lvm_physical_volume(block_device)
zap_disk(block_device)
def _parse_block_device(block_device):
''' Parse a block device string and return either the full path
to the block device, or the path to a loopback device and its size
:param: block_device: str: Block device as provided in configuration
:returns: (str, int): Full path to block device and 0 OR
Full path to loopback device and required size
'''
_none = ['None', 'none', None]
if block_device in _none:
return (None, 0)
if block_device.startswith('/dev/'):
return (block_device, 0)
elif block_device.startswith('/'):
_bd = block_device.split('|')
if len(_bd) == 2:
bdev, size = _bd
else:
bdev = block_device
size = DEFAULT_LOOPBACK_SIZE
return (bdev, size)
else:
return ('/dev/{}'.format(block_device), 0)
def is_db_intialised(cluster_rid=None):
"""
Check whether a db intialisation has been performed by any unit in this
cluster.
We make decision based in whether we or any of our peers has previously
sent or echoed an initialisation notification.
@param cluster_rid: current relation id. If none provided, all cluster
relation ids will be checked.
@return: True if there has been a db initialisation otherwise False.
"""
if cluster_rid:
rids = [cluster_rid]
else:
rids = relation_ids('cluster')
settings = {}
for c_rid in rids:
units = related_units(relid=c_rid) + [local_unit()]
for unit in units:
_settings = relation_get(unit=unit, rid=c_rid) or {}
for key in [CINDER_DB_INIT_RKEY, CINDER_DB_INIT_ECHO_RKEY]:
if _settings.get(key):
settings[key] = _settings.get(key)
if not settings:
return False
if (settings.get(CINDER_DB_INIT_RKEY) or
settings.get(CINDER_DB_INIT_ECHO_RKEY)):
return True
def check_db_initialised():
"""Check if we have received db init'd notify and restart services if we
have not already.
NOTE: this must only be called from peer relation context.
"""
if not is_db_intialised():
return
settings = relation_get() or {}
if settings:
init_id = settings.get(CINDER_DB_INIT_RKEY)
echoed_init_id = relation_get(unit=local_unit(),
attribute=CINDER_DB_INIT_ECHO_RKEY)
# If this unit has previously received an init notification (and echoed
# it) then we can ignore further notifications.
if not echoed_init_id:
if init_id and local_unit() not in init_id:
log("Restarting cinder services following db initialisation",
level=DEBUG)
if not is_unit_paused_set():
for svc in enabled_services():
service_restart(svc)
# Set echo
if init_id and local_unit() not in init_id:
relation_set(**{CINDER_DB_INIT_ECHO_RKEY: init_id})
# NOTE(jamespage): Retry deals with sync issues during one-shot HA deploys.
# mysql might be restarting or suchlike.
@retry_on_exception(5, base_delay=3, exc_type=subprocess.CalledProcessError)
def migrate_database():
"""Initialise cinder database if not already done so.
Runs cinder-manage to initialize a new database or migrate existing and
restarts services to ensure that the changes are picked up. The first
(leader) unit to perform this action should have broadcast this information
to its peers so first we check whether this has already occurred.
"""
if is_db_intialised():
log("Database is already initialised.", level=DEBUG)
return
cmd = ['cinder-manage', 'db', 'sync']
subprocess.check_call(cmd)
# Notify peers so that services get restarted
log("Notifying peer(s) that db is initialised and restarting services",
level=DEBUG)
for r_id in relation_ids('cluster'):
if not is_unit_paused_set():
for svc in enabled_services():
service_restart(svc)
id = "%s-%s" % (local_unit(), uuid.uuid4())
relation_set(relation_id=r_id, **{CINDER_DB_INIT_RKEY: id})
def set_ceph_env_variables(service):
# XXX: Horrid kludge to make cinder-volume use
# a different ceph username than admin
env = open('/etc/environment', 'r').read()
if 'CEPH_ARGS' not in env:
with open('/etc/environment', 'a') as out:
out.write('CEPH_ARGS="--id %s"\n' % service)
with open('/etc/init/cinder-volume.override', 'w') as out:
out.write('env CEPH_ARGS="--id %s"\n' % service)
def do_openstack_upgrade(configs):
"""Perform an uprade of cinder. Takes care of upgrading
packages, rewriting configs + database migration and
potentially any other post-upgrade actions.
:param configs: The charms main OSConfigRenderer object.
"""
new_src = config('openstack-origin')
new_os_rel = get_os_codename_install_source(new_src)
juju_log('Performing OpenStack upgrade to %s.' % (new_os_rel))
configure_installation_source(new_src)
dpkg_opts = [
'--option', 'Dpkg::Options::=--force-confnew',
'--option', 'Dpkg::Options::=--force-confdef',
]
apt_update()
apt_upgrade(options=dpkg_opts, fatal=True, dist=True)
apt_install(determine_packages(), fatal=True)
# set CONFIGS to load templates from new release and regenerate config
configs.set_release(openstack_release=new_os_rel)
configs.write_all()
if run_in_apache():
disable_package_apache_site()
# Stop/start services and migrate DB if leader
[service_stop(s) for s in services()]
if is_elected_leader(CLUSTER_RES):
migrate_database()
if not is_unit_paused_set():
[service_start(s) for s in services()]
def setup_ipv6():
ubuntu_rel = lsb_release()['DISTRIB_CODENAME'].lower()
if ubuntu_rel < "trusty":
raise Exception("IPv6 is not supported in the charms for Ubuntu "
"versions less than Trusty 14.04")
# Need haproxy >= 1.5.3 for ipv6 so for Trusty if we are <= Kilo we need to
# use trusty-backports otherwise we can use the UCA.
if ubuntu_rel == 'trusty' and os_release('cinder') < 'liberty':
add_source('deb http://archive.ubuntu.com/ubuntu trusty-backports '
'main')
apt_update()
apt_install('haproxy/trusty-backports', fatal=True)
def git_install(projects_yaml):
"""Perform setup, and install git repos specified in yaml parameter."""
if git_install_requested():
git_pre_install()
projects_yaml = git_default_repos(projects_yaml)
git_clone_and_install(projects_yaml, core_project='cinder')
git_post_install(projects_yaml)
def git_pre_install():
"""Perform cinder pre-install setup."""
dirs = [{'path': '/etc/tgt',
'owner': 'cinder',
'group': 'cinder',
'perms': 0750,
},
{'path': '/var/lib/cinder',
'owner': 'cinder',
'group': 'cinder',
'perms': 0755,
},
{'path': '/var/lib/cinder/volumes',
'owner': 'cinder',
'group': 'cinder',
'perms': 0750,
},
{'path': '/var/lock/cinder',
'owner': 'cinder',
'group': 'root',
'perms': 0750,
},
{'path': '/var/log/cinder',
'owner': 'cinder',
'group': 'cinder',
'perms': 0750,
}]
logs = [
'/var/log/cinder/cinder-api.log',
'/var/log/cinder/cinder-backup.log',
'/var/log/cinder/cinder-scheduler.log',
'/var/log/cinder/cinder-volume.log',
]
adduser('cinder', shell='/bin/bash', system_user=True)
add_group('cinder', system_group=True)
add_user_to_group('cinder', 'cinder')
for d in dirs:
mkdir(d['path'], owner=d['owner'], group=d['group'], perms=d['perms'],
force=False)
for l in logs:
write_file(l, '', owner='cinder', group='cinder', perms=0600)
def git_post_install(projects_yaml):
"""Perform cinder post-install setup."""
http_proxy = git_yaml_value(projects_yaml, 'http_proxy')
base_packages = ['mysql-python', 'python-cephlibs']
for pkg in base_packages:
if http_proxy:
pip_install(pkg, proxy=http_proxy,
venv=git_pip_venv_dir(projects_yaml))
else:
pip_install(pkg,
venv=git_pip_venv_dir(projects_yaml))
src_etc = os.path.join(git_src_dir(projects_yaml, 'cinder'), 'etc/cinder')
configs = {
'src': src_etc,
'dest': '/etc/cinder',
}
if os.path.exists(configs['dest']):
shutil.rmtree(configs['dest'])
shutil.copytree(configs['src'], configs['dest'])
# NOTE(coreycb): Need to find better solution than bin symlinks.
symlinks = [
{'src': os.path.join(git_pip_venv_dir(projects_yaml),
'bin/cinder-manage'),
'link': '/usr/local/bin/cinder-manage'},
{'src': os.path.join(git_pip_venv_dir(projects_yaml),
'bin/cinder-rootwrap'),
'link': '/usr/local/bin/cinder-rootwrap'},
]
for s in symlinks:
if os.path.lexists(s['link']):
os.remove(s['link'])
os.symlink(s['src'], s['link'])
render('git/cinder_tgt.conf', '/etc/tgt/conf.d', {}, owner='cinder',
group='cinder', perms=0o644)
render('git/logging.conf', '/etc/cinder/logging.conf', {}, owner='cinder',
group='cinder', perms=0o644)
render('git/cinder_sudoers', '/etc/sudoers.d/cinder_sudoers', {},
owner='root', group='root', perms=0o440)
os.chmod('/etc/sudoers.d', 0o750)
bin_dir = os.path.join(git_pip_venv_dir(projects_yaml), 'bin')
# Use systemd init units/scripts from ubuntu wily onward
if lsb_release()['DISTRIB_RELEASE'] >= '15.10':
templates_dir = os.path.join(charm_dir(), 'templates/git')
daemons = ['cinder-api', 'cinder-backup', 'cinder-scheduler',
'cinder-volume']
for daemon in daemons:
cinder_context = {
'daemon_path': os.path.join(bin_dir, daemon),
}
template_file = 'git/{}.init.in.template'.format(daemon)
init_in_file = '{}.init.in'.format(daemon)
render(template_file, os.path.join(templates_dir, init_in_file),
cinder_context, perms=0o644)
git_generate_systemd_init_files(templates_dir)
else:
cinder_api_context = {
'service_description': 'Cinder API server',
'service_name': 'Cinder',
'user_name': 'cinder',
'start_dir': '/var/lib/cinder',
'process_name': 'cinder-api',
'executable_name': os.path.join(bin_dir, 'cinder-api'),
'config_files': ['/etc/cinder/cinder.conf'],
'log_file': '/var/log/cinder/cinder-api.log',
}
cinder_backup_context = {
'service_description': 'Cinder backup server',
'service_name': 'Cinder',
'user_name': 'cinder',
'start_dir': '/var/lib/cinder',
'process_name': 'cinder-backup',
'executable_name': os.path.join(bin_dir, 'cinder-backup'),
'config_files': ['/etc/cinder/cinder.conf'],
'log_file': '/var/log/cinder/cinder-backup.log',
}
cinder_scheduler_context = {
'service_description': 'Cinder scheduler server',
'service_name': 'Cinder',
'user_name': 'cinder',
'start_dir': '/var/lib/cinder',
'process_name': 'cinder-scheduler',
'executable_name': os.path.join(bin_dir, 'cinder-scheduler'),
'config_files': ['/etc/cinder/cinder.conf'],
'log_file': '/var/log/cinder/cinder-scheduler.log',
}
cinder_volume_context = {
'service_description': 'Cinder volume server',
'service_name': 'Cinder',
'user_name': 'cinder',
'start_dir': '/var/lib/cinder',
'process_name': 'cinder-volume',
'executable_name': os.path.join(bin_dir, 'cinder-volume'),
'config_files': ['/etc/cinder/cinder.conf'],
'log_file': '/var/log/cinder/cinder-volume.log',
}
templates_dir = 'hooks/charmhelpers/contrib/openstack/templates'
templates_dir = os.path.join(charm_dir(), templates_dir)
render('git.upstart', '/etc/init/cinder-api.conf',
cinder_api_context, perms=0o644,
templates_dir=templates_dir)
render('git.upstart', '/etc/init/cinder-backup.conf',
cinder_backup_context, perms=0o644,
templates_dir=templates_dir)
render('git.upstart', '/etc/init/cinder-scheduler.conf',
cinder_scheduler_context, perms=0o644,
templates_dir=templates_dir)
render('git.upstart', '/etc/init/cinder-volume.conf',
cinder_volume_context, perms=0o644,
templates_dir=templates_dir)
if not is_unit_paused_set():
service_restart('tgtd')
[service_restart(s) for s in services()]
def filesystem_mounted(fs):
return subprocess.call(['grep', '-wqs', fs, '/proc/mounts']) == 0
def get_optional_interfaces():
"""Return the optional interfaces that should be checked if the relavent
relations have appeared.
:returns: {general_interface: [specific_int1, specific_int2, ...], ...}
"""
optional_interfaces = {}
if relation_ids('ha'):
optional_interfaces['ha'] = ['cluster']
if relation_ids('storage-backend') or relation_ids('ceph'):
optional_interfaces['storage-backend'] = ['storage-backend', 'ceph']
if relation_ids('image-service'):
optional_interfaces['image'] = ['image-service']
return optional_interfaces
def check_optional_relations(configs):
"""Check that if we have a relation_id for high availability that we can
get the hacluster config. If we can't then we are blocked. This function
is called from assess_status/set_os_workload_status as the charm_func and
needs to return either "unknown", "" if there is no problem or the status,
message if there is a problem.
:param configs: an OSConfigRender() instance.
:return 2-tuple: (string, string) = (status, message)
"""
if relation_ids('ha'):
try:
get_hacluster_config()
except:
return ('blocked',
'hacluster missing configuration: '
'vip, vip_iface, vip_cidr')
# return 'unknown' as the lowest priority to not clobber an existing
# status.
return 'unknown', ''
def assess_status(configs):
"""Assess status of current unit
Decides what the state of the unit should be based on the current
configuration.
SIDE EFFECT: calls set_os_workload_status(...) which sets the workload
status of the unit.
Also calls status_set(...) directly if paused state isn't complete.
@param configs: a templating.OSConfigRenderer() object
@returns None - this function is executed for its side-effect
"""
assess_status_func(configs)()
os_application_version_set(VERSION_PACKAGE)
def assess_status_func(configs):
"""Helper function to create the function that will assess_status() for
the unit.
Uses charmhelpers.contrib.openstack.utils.make_assess_status_func() to
create the appropriate status function and then returns it.
Used directly by assess_status() and also for pausing and resuming
the unit.
NOTE: REQUIRED_INTERFACES is augmented with the optional interfaces
depending on the current config before being passed to the
make_assess_status_func() function.
NOTE(ajkavanagh) ports are not checked due to race hazards with services
that don't behave sychronously w.r.t their service scripts. e.g.
apache2.
@param configs: a templating.OSConfigRenderer() object
@return f() -> None : a function that assesses the unit's workload status
"""
interfaces = required_interfaces()
interfaces.update(get_optional_interfaces())
return make_assess_status_func(
configs, interfaces,
charm_func=check_optional_relations,
services=services(), ports=None)
def pause_unit_helper(configs):
"""Helper function to pause a unit, and then call assess_status(...) in
effect, so that the status is correctly updated.
Uses charmhelpers.contrib.openstack.utils.pause_unit() to do the work.
@param configs: a templating.OSConfigRenderer() object
@returns None - this function is executed for its side-effect
"""
_pause_resume_helper(pause_unit, configs)
def resume_unit_helper(configs):
"""Helper function to resume a unit, and then call assess_status(...) in
effect, so that the status is correctly updated.
Uses charmhelpers.contrib.openstack.utils.resume_unit() to do the work.
@param configs: a templating.OSConfigRenderer() object
@returns None - this function is executed for its side-effect
"""
_pause_resume_helper(resume_unit, configs)
def _pause_resume_helper(f, configs):
"""Helper function that uses the make_assess_status_func(...) from
charmhelpers.contrib.openstack.utils to create an assess_status(...)
function that can be used with the pause/resume of the unit
@param f: the function to be used with the assess_status(...) function
@returns None - this function is executed for its side-effect
"""
# TODO(ajkavanagh) - ports= has been left off because of the race hazard
# that exists due to service_start()
f(assess_status_func(configs),
services=services(),
ports=None)
def run_in_apache():
"""Return true if cinder API is run under apache2 with mod_wsgi in
this release.
"""
return os_release('cinder-common') >= 'ocata'
def disable_package_apache_site():
"""Ensure that the package-provided apache configuration is disabled to
prevent it from conflicting with the charm-provided version.
"""
if os.path.exists(PACKAGE_CINDER_API_CONF):
subprocess.check_call(['a2dissite', 'cinder-wsgi'])
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