233dc6a760
Cinder volumes which are provisioned via nfs are initially mounted on the cinder node. For this to work the nfs-common package is needed. Change-Id: Iac11c262c6e5408303b3afda8633b0252055cfec Closes-Bug: #1816820
960 lines
32 KiB
Python
960 lines
32 KiB
Python
# Copyright 2016 Canonical Ltd
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#
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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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from __future__ import print_function
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import os
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import re
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import subprocess
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import uuid
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from copy import deepcopy
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from collections import OrderedDict
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from copy import copy
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from tempfile import NamedTemporaryFile
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from charmhelpers.core.strutils import (
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bytes_from_string
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)
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from charmhelpers.core.hookenv import (
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config,
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local_unit,
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relation_get,
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relation_set,
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relation_ids,
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related_units,
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log,
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DEBUG,
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hook_name,
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)
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from charmhelpers.fetch import (
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apt_upgrade,
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apt_update,
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apt_install,
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add_source,
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apt_purge,
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apt_autoremove,
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filter_missing_packages,
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)
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from charmhelpers.core.host import (
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CompareHostReleases,
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lsb_release,
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mkdir,
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mounts,
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umount,
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service_restart,
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service_stop,
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service_start,
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)
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from charmhelpers.contrib.openstack.alternatives import install_alternative
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from charmhelpers.contrib.hahelpers.cluster import (
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is_elected_leader,
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get_hacluster_config,
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)
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from charmhelpers.contrib.storage.linux.utils import (
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is_block_device,
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zap_disk,
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is_device_mounted,
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)
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from charmhelpers.contrib.storage.linux.lvm import (
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create_lvm_physical_volume,
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create_lvm_volume_group,
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deactivate_lvm_volume_group,
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extend_logical_volume_by_device,
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is_lvm_physical_volume,
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list_lvm_volume_group,
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list_thin_logical_volume_pools,
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remove_lvm_physical_volume,
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)
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from charmhelpers.contrib.storage.linux.loopback import (
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ensure_loopback_device,
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)
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from charmhelpers.contrib.openstack import (
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templating,
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context,
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)
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from charmhelpers.contrib.openstack.utils import (
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configure_installation_source,
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get_os_codename_install_source,
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os_release,
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reset_os_release,
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make_assess_status_func,
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pause_unit,
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resume_unit,
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is_unit_paused_set,
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os_application_version_set,
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token_cache_pkgs,
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enable_memcache,
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CompareOpenStackReleases,
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)
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from charmhelpers.core.decorators import (
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retry_on_exception,
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)
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import cinder_contexts
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from cinder_contexts import ceph_config_file
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COMMON_PACKAGES = [
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'apache2',
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'cinder-common',
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'gdisk',
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'haproxy',
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'librbd1', # bug 1440948 vol-from-img
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'python-jinja2',
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'python-keystoneclient',
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'python-mysqldb',
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'python-psycopg2',
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'qemu-utils',
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'thin-provisioning-tools',
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'nfs-common',
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]
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PY3_PACKAGES = [
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'python3-cinder',
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'python3-memcache',
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'python3-rados',
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'python3-rbd',
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'libapache2-mod-wsgi-py3',
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]
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API_PACKAGES = ['cinder-api']
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VOLUME_PACKAGES = ['cinder-volume']
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SCHEDULER_PACKAGES = ['cinder-scheduler']
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DEFAULT_LOOPBACK_SIZE = '5G'
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# Cluster resource used to determine leadership when hacluster'd
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CLUSTER_RES = 'grp_cinder_vips'
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CINDER_DB_INIT_RKEY = 'cinder-db-initialised'
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CINDER_DB_INIT_ECHO_RKEY = 'cinder-db-initialised-echo'
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class CinderCharmError(Exception):
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pass
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CINDER_CONF_DIR = "/etc/cinder"
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CINDER_CONF = '%s/cinder.conf' % CINDER_CONF_DIR
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CINDER_API_CONF = '%s/api-paste.ini' % CINDER_CONF_DIR
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CINDER_POLICY_JSON = '%s/policy.json' % CINDER_CONF_DIR
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CEPH_CONF = '/etc/ceph/ceph.conf'
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HAPROXY_CONF = '/etc/haproxy/haproxy.cfg'
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APACHE_SITE_CONF = '/etc/apache2/sites-available/openstack_https_frontend'
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APACHE_SITE_24_CONF = '/etc/apache2/sites-available/' \
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'openstack_https_frontend.conf'
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MEMCACHED_CONF = '/etc/memcached.conf'
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WSGI_CINDER_API_CONF = '/etc/apache2/sites-enabled/wsgi-openstack-api.conf'
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PACKAGE_CINDER_API_CONF = '/etc/apache2/conf-enabled/cinder-wsgi.conf'
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VERSION_PACKAGE = 'cinder-common'
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TEMPLATES = 'templates/'
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# The interface is said to be satisfied if anyone of the interfaces in
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# the
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# list has a complete context.
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REQUIRED_INTERFACES = {
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'database': ('shared-db',),
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'messaging': ('amqp',),
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'identity': ('identity-service',),
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}
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def required_interfaces():
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"""Provide the required charm interfaces based on configured roles."""
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_interfaces = copy(REQUIRED_INTERFACES)
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if not service_enabled('api'):
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# drop requirement for identity interface
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_interfaces.pop('identity')
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return _interfaces
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# Map config files to hook contexts and services that will be associated
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# with file in restart_on_changes()'s service map.
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BASE_RESOURCE_MAP = OrderedDict([
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(CINDER_CONF, {
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'contexts': [context.SharedDBContext(ssl_dir=CINDER_CONF_DIR),
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context.AMQPContext(ssl_dir=CINDER_CONF_DIR),
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context.ImageServiceContext(),
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context.OSConfigFlagContext(),
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context.SyslogContext(),
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cinder_contexts.CephContext(),
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cinder_contexts.HAProxyContext(),
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cinder_contexts.ImageServiceContext(),
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cinder_contexts.CinderSubordinateConfigContext(
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interface=['storage-backend', 'backup-backend'],
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service='cinder',
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config_file=CINDER_CONF),
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cinder_contexts.StorageBackendContext(),
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cinder_contexts.LoggingConfigContext(),
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context.IdentityServiceContext(
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service='cinder',
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service_user='cinder'),
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context.BindHostContext(),
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context.WorkerConfigContext(),
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cinder_contexts.RegionContext(),
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context.InternalEndpointContext(),
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cinder_contexts.VolumeUsageAuditContext(),
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context.MemcacheContext(),
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cinder_contexts.SectionalConfigContext(),
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cinder_contexts.LVMContext()],
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'services': ['cinder-api', 'cinder-volume', 'cinder-scheduler',
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'haproxy']
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}),
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(CINDER_API_CONF, {
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'contexts': [context.IdentityServiceContext()],
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'services': ['cinder-api'],
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}),
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(CINDER_POLICY_JSON, {
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'contexts': [],
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'services': ['cinder-api']
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}),
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(ceph_config_file(), {
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'contexts': [context.CephContext()],
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'services': ['cinder-volume']
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}),
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(HAPROXY_CONF, {
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'contexts': [context.HAProxyContext(singlenode_mode=True),
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cinder_contexts.HAProxyContext()],
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'services': ['haproxy'],
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}),
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(APACHE_SITE_CONF, {
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'contexts': [cinder_contexts.ApacheSSLContext()],
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'services': ['apache2'],
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}),
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(APACHE_SITE_24_CONF, {
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'contexts': [cinder_contexts.ApacheSSLContext()],
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'services': ['apache2'],
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}),
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])
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def register_configs(release=None):
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"""Register config files with their respective contexts.
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Regstration of some configs may not be required depending on
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existing of certain relations.
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"""
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# if called without anything installed (eg during install hook)
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# just default to earliest supported release. configs dont get touched
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# till post-install, anyway.
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release = release or os_release('cinder-common', base='icehouse')
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configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
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openstack_release=release)
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for cfg, rscs in resource_map().items():
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configs.register(cfg, rscs['contexts'])
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return configs
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def resource_map(release=None):
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"""
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Dynamically generate a map of resources that will be managed for a single
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hook execution.
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"""
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resource_map = deepcopy(BASE_RESOURCE_MAP)
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release = release or os_release('cinder-common', base='icehouse')
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if relation_ids('backup-backend'):
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resource_map[CINDER_CONF]['services'].append('cinder-backup')
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resource_map[ceph_config_file()]['services'].append('cinder-backup')
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if relation_ids('ceph') and hook_name() != 'ceph-relation-broken':
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# need to create this early, new peers will have a relation during
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# registration # before they've run the ceph hooks to create the
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# directory.
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# !!! FIX: These side effects seem inappropriate for this method
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mkdir(os.path.dirname(CEPH_CONF))
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mkdir(os.path.dirname(ceph_config_file()))
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# Install ceph config as an alternative for co-location with
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# ceph and ceph-osd charm - cinder ceph.conf will be
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# lower priority than both of these but thats OK
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if not os.path.exists(ceph_config_file()):
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# touch file for pre-templated generation
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open(ceph_config_file(), 'w').close()
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install_alternative(os.path.basename(CEPH_CONF),
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CEPH_CONF, ceph_config_file())
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else:
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resource_map.pop(ceph_config_file())
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if os.path.exists('/etc/apache2/conf-available'):
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resource_map.pop(APACHE_SITE_CONF)
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else:
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resource_map.pop(APACHE_SITE_24_CONF)
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# Remove services from map which are not enabled by user config
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for cfg in resource_map.keys():
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resource_map[cfg]['services'] = \
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filter_services(resource_map[cfg]['services'])
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if enable_memcache(source=config()['openstack-origin']):
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resource_map[MEMCACHED_CONF] = {
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'contexts': [context.MemcacheContext()],
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'services': ['memcached']}
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if run_in_apache():
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for cfile in resource_map:
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svcs = resource_map[cfile]['services']
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if 'cinder-api' in svcs:
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svcs.remove('cinder-api')
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if 'apache2' not in svcs:
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svcs.append('apache2')
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wsgi_script = "/usr/bin/cinder-wsgi"
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resource_map[WSGI_CINDER_API_CONF] = {
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'contexts': [context.WSGIWorkerConfigContext(name="cinder",
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script=wsgi_script),
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cinder_contexts.HAProxyContext()],
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'services': ['apache2']
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}
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if release and CompareOpenStackReleases(release) < 'queens':
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resource_map.pop(CINDER_POLICY_JSON)
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return resource_map
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def filter_services(svcs):
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'''Remove services not enabled by user config from a list of services
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@param svcs: List of services
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@returns : List of enabled services
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'''
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return [s for s in svcs
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if service_enabled(s.lstrip('cinder-')) or
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not s.startswith('cinder')]
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def juju_log(msg):
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log('[cinder] %s' % msg)
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def determine_packages():
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'''Determine list of packages required for the currently enabled services.
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:returns: list of package names
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'''
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pkgs = copy(COMMON_PACKAGES)
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for s, p in [('api', API_PACKAGES),
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('volume', VOLUME_PACKAGES),
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('scheduler', SCHEDULER_PACKAGES)]:
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if service_enabled(s):
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pkgs += p
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pkgs.extend(token_cache_pkgs(source=config()['openstack-origin']))
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if CompareOpenStackReleases(os_release('cinder')) >= 'rocky':
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pkgs = [p for p in pkgs if not p.startswith('python-')]
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pkgs.extend(PY3_PACKAGES)
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return pkgs
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def determine_purge_packages():
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'''
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Determine list of packages that where previously installed which are no
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longer needed.
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:returns: list of package names
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'''
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if CompareOpenStackReleases(os_release('cinder')) >= 'rocky':
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pkgs = [p for p in COMMON_PACKAGES if p.startswith('python-')]
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pkgs.append('python-cinder')
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pkgs.append('python-memcache')
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return pkgs
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return []
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def remove_old_packages():
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'''Purge any packages that need ot be removed.
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:returns: bool Whether packages were removed.
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'''
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installed_packages = filter_missing_packages(determine_purge_packages())
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if installed_packages:
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apt_purge(installed_packages, fatal=True)
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apt_autoremove(purge=True, fatal=True)
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return bool(installed_packages)
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def service_enabled(service):
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'''Determine if a specific cinder service is enabled in
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charm configuration.
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:param service: str: cinder service name to query (volume, scheduler, api,
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all)
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:returns: boolean: True if service is enabled in config, False if not.
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'''
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enabled = config()['enabled-services']
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if enabled == 'all':
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return True
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return service in enabled
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def restart_map():
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'''Determine the correct resource map to be passed to
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charmhelpers.core.restart_on_change() based on the services configured.
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:returns: dict: A dictionary mapping config file to lists of services
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that should be restarted when file changes.
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'''
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return OrderedDict([(cfg, v['services'])
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for cfg, v in resource_map().items()
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if v['services']])
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def enabled_services():
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m = restart_map()
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svcs = set()
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for t in m.items():
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svcs.update(t[1])
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return list(svcs)
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def services():
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''' Returns a list of services associate with this charm '''
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_services = set()
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for v in restart_map().values():
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_services.update(v)
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return list(sorted(_services))
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def reduce_lvm_volume_group_missing(volume_group, extra_args=None):
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'''
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Remove all missing physical volumes from the volume group, if there
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are no logical volumes allocated on them.
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:param volume_group: str: Name of volume group to reduce.
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:param extra_args: list: List of extra args to pass to vgreduce
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'''
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if extra_args is None:
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extra_args = []
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command = ['vgreduce', '--removemissing'] + extra_args + [volume_group]
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subprocess.check_call(command)
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def extend_lvm_volume_group(volume_group, block_device):
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'''
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Extend an LVM volume group onto a given block device.
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Assumes block device has already been initialized as an LVM PV.
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:param volume_group: str: Name of volume group to create.
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:block_device: str: Full path of PV-initialized block device.
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'''
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subprocess.check_call(['vgextend', volume_group, block_device])
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def lvm_volume_group_exists(volume_group):
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"""Check for the existence of a volume group.
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:param volume_group: str: Name of volume group.
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"""
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try:
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subprocess.check_call(['vgdisplay', volume_group])
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except subprocess.CalledProcessError:
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return False
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else:
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return True
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def remove_lvm_volume_group(volume_group):
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"""Remove a volume group.
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:param volume_group: str: Name of volume group to remove.
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"""
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subprocess.check_call(['vgremove', '--force', volume_group])
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def ensure_lvm_volume_group_non_existent(volume_group):
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"""Remove volume_group if it exists.
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:param volume_group: str: Name of volume group.
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"""
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if not lvm_volume_group_exists(volume_group):
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return
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remove_lvm_volume_group(volume_group)
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def log_lvm_info():
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"""Log some useful information about how LVM is setup."""
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pvscan_output = subprocess.check_output(['pvscan']).decode('UTF-8')
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juju_log('pvscan: %s' % pvscan_output)
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def configure_lvm_storage(block_devices, volume_group, overwrite=False,
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remove_missing=False, remove_missing_force=False):
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''' Configure LVM storage on the list of block devices provided
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:param block_devices: list: List of whitelisted block devices to detect
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and use if found
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:param overwrite: bool: Scrub any existing block data if block device is
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not already in-use
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:param remove_missing: bool: Remove missing physical volumes from volume
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group if logical volume not allocated on them
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:param remove_missing_force: bool: Remove missing physical volumes from
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volume group even if logical volumes are allocated
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on them. Overrides 'remove_missing' if set.
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'''
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log_lvm_info()
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devices = []
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for block_device in block_devices:
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(block_device, size) = _parse_block_device(block_device)
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if not is_device_mounted(block_device):
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if size == 0 and is_block_device(block_device):
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|
devices.append(block_device)
|
|
elif size > 0:
|
|
devices.append(ensure_loopback_device(block_device, str(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)
|
|
thin_pools = list_thin_logical_volume_pools(path_mode=True)
|
|
if len(thin_pools) == 0:
|
|
juju_log("No thin pools found")
|
|
elif len(thin_pools) == 1:
|
|
juju_log("Thin pool {} found, extending with {}".format(
|
|
thin_pools[0],
|
|
new_device))
|
|
extend_logical_volume_by_device(thin_pools[0], new_device)
|
|
else:
|
|
juju_log("Multiple thin pools ({}) found, "
|
|
"skipping auto extending with {}".format(
|
|
','.join(thin_pools),
|
|
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).decode('UTF-8')
|
|
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, bytes_from_string(str(size)))
|
|
else:
|
|
return ('/dev/{}'.format(block_device), 0)
|
|
|
|
|
|
def is_db_initialised(cluster_rid=None):
|
|
"""
|
|
Check whether a db intialisation has been performed by any peer unit.
|
|
|
|
We base our decision on 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')
|
|
|
|
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):
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
def is_new_dbinit_notification(init_id, echoed_init_id):
|
|
"""Returns True if we have a received a new db initialisation notification
|
|
from a peer unit and we have not previously echoed it to indicate that we
|
|
have already performed the necessary actions as result.
|
|
|
|
@param init_db: received initialisation notification.
|
|
@param echoed_init_db: value currently set for the echo key.
|
|
@return: True if new notification and False if not.
|
|
"""
|
|
return (init_id and (local_unit() not in init_id) and
|
|
(echoed_init_id != init_id))
|
|
|
|
|
|
def check_local_db_actions_complete():
|
|
"""Check if we have received db init'd notification and restart services
|
|
if we have not already.
|
|
|
|
NOTE: this must only be called from peer relation context.
|
|
"""
|
|
if not is_db_initialised():
|
|
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 we have received an init notification from a peer unit
|
|
# (assumed to be the leader) then restart cinder-* and echo the
|
|
# notification and don't restart again unless we receive a new
|
|
# (different) notification.
|
|
if is_new_dbinit_notification(init_id, echoed_init_id):
|
|
if not is_unit_paused_set():
|
|
log("Restarting cinder services following db "
|
|
"initialisation", level=DEBUG)
|
|
for svc in enabled_services():
|
|
service_restart(svc)
|
|
|
|
# Echo notification
|
|
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(upgrade=False):
|
|
"""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 not upgrade and is_db_initialised():
|
|
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 do_openstack_upgrade(configs=None):
|
|
"""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)
|
|
reset_os_release()
|
|
apt_install(determine_packages(), fatal=True)
|
|
|
|
remove_old_packages()
|
|
|
|
# NOTE(hopem): must do this after packages have been upgraded so that
|
|
# we ensure that correct configs are selected for the target release.
|
|
# See LP 1726527.
|
|
configs = register_configs()
|
|
|
|
# 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(upgrade=True)
|
|
if not is_unit_paused_set():
|
|
[service_start(s) for s in services()]
|
|
|
|
|
|
def setup_ipv6():
|
|
ubuntu_rel = lsb_release()['DISTRIB_CODENAME'].lower()
|
|
if CompareHostReleases(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
|
|
CompareOpenStackReleases(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 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 CompareOpenStackReleases(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(['a2disconf', 'cinder-wsgi'])
|
|
|
|
|
|
def scrub_old_style_ceph():
|
|
"""Purge any legacy ceph configuration from install"""
|
|
# NOTE: purge old override file - no longer needed
|
|
if os.path.exists('/etc/init/cinder-volume.override'):
|
|
os.remove('/etc/init/cinder-volume.override')
|
|
# NOTE: purge any CEPH_ARGS data from /etc/environment
|
|
env_file = '/etc/environment'
|
|
ceph_match = re.compile("^CEPH_ARGS.*").search
|
|
with open(env_file, 'rt') as input_file:
|
|
with NamedTemporaryFile(mode='wt',
|
|
delete=False,
|
|
dir=os.path.dirname(env_file)) as outfile:
|
|
for line in input_file:
|
|
if not ceph_match(line):
|
|
print(line, end='', file=outfile)
|
|
os.rename(outfile.name, input_file.name)
|