335 lines
14 KiB
Python
335 lines
14 KiB
Python
# Copyright 2013 OpenStack Foundation
|
|
# Copyright 2013 Rackspace Hosting
|
|
# Copyright 2013 Hewlett-Packard Development Company, L.P.
|
|
# All Rights Reserved.
|
|
#
|
|
# 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 tempfile
|
|
|
|
from oslo_log import log as logging
|
|
|
|
from trove.common import cfg
|
|
from trove.common import configurations
|
|
from trove.common import exception
|
|
from trove.common import utils
|
|
from trove.common.notification import EndNotification
|
|
from trove.guestagent import guest_log
|
|
from trove.guestagent.common import operating_system
|
|
from trove.guestagent.datastore import manager
|
|
from trove.guestagent.utils import docker as docker_util
|
|
from trove.guestagent.utils import mysql as mysql_util
|
|
from trove.instance import service_status
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
CONF = cfg.CONF
|
|
|
|
|
|
class MySqlManager(manager.Manager):
|
|
def __init__(self, mysql_app, mysql_app_status, mysql_admin,
|
|
manager_name='mysql'):
|
|
super(MySqlManager, self).__init__(manager_name)
|
|
|
|
self.app = mysql_app
|
|
self.status = mysql_app_status
|
|
self.adm = mysql_admin
|
|
self.volume_do_not_start_on_reboot = False
|
|
|
|
@property
|
|
def configuration_manager(self):
|
|
return self.app.configuration_manager
|
|
|
|
def get_service_status(self):
|
|
try:
|
|
with mysql_util.SqlClient(self.app.get_engine()) as client:
|
|
cmd = "SELECT 1;"
|
|
client.execute(cmd)
|
|
|
|
LOG.debug("Database service check: database query is responsive")
|
|
return service_status.ServiceStatuses.HEALTHY
|
|
except Exception:
|
|
return super(MySqlManager, self).get_service_status()
|
|
|
|
def do_prepare(self, context, packages, databases, memory_mb, users,
|
|
device_path, mount_point, backup_info,
|
|
config_contents, root_password, overrides,
|
|
cluster_config, snapshot, ds_version=None):
|
|
"""This is called from prepare in the base class."""
|
|
data_dir = mount_point + '/data'
|
|
self.app.stop_db()
|
|
operating_system.ensure_directory(data_dir,
|
|
user=CONF.database_service_uid,
|
|
group=CONF.database_service_uid,
|
|
as_root=True)
|
|
# This makes sure the include dir is created.
|
|
self.app.set_data_dir(data_dir)
|
|
|
|
# Prepare mysql configuration
|
|
LOG.info('Preparing database configuration')
|
|
self.app.configuration_manager.save_configuration(config_contents)
|
|
self.app.update_overrides(overrides)
|
|
|
|
# Restore data from backup and reset root password
|
|
if backup_info:
|
|
self.perform_restore(context, data_dir, backup_info)
|
|
self.reset_password_for_restore(ds_version=ds_version,
|
|
data_dir=data_dir)
|
|
|
|
# Start database service.
|
|
# Cinder volume initialization(after formatted) may leave a
|
|
# lost+found folder
|
|
# The --ignore-db-dir option is deprecated in MySQL 5.7. With the
|
|
# introduction of the data dictionary in MySQL 8.0, it became
|
|
# superfluous and was removed in that version.
|
|
command = (f'--ignore-db-dir=lost+found --ignore-db-dir=conf.d '
|
|
f'--datadir={data_dir}')
|
|
self.app.start_db(ds_version=ds_version, command=command)
|
|
|
|
self.app.secure()
|
|
enable_remote_root = (backup_info and self.adm.is_root_enabled())
|
|
if enable_remote_root:
|
|
self.status.report_root(context)
|
|
else:
|
|
self.app.secure_root()
|
|
|
|
if snapshot:
|
|
# This instance is a replication slave
|
|
self.attach_replica(context, snapshot, snapshot['config'])
|
|
|
|
def start_db_with_conf_changes(self, context, config_contents, ds_version):
|
|
self.app.start_db_with_conf_changes(config_contents, ds_version)
|
|
|
|
def create_backup(self, context, backup_info):
|
|
"""Create backup for the database.
|
|
|
|
:param context: User context object.
|
|
:param backup_info: a dictionary containing the db instance id of the
|
|
backup task, location, type, and other data.
|
|
"""
|
|
LOG.info(f"Creating backup {backup_info['id']}")
|
|
with EndNotification(context):
|
|
volumes_mapping = {
|
|
'/var/lib/mysql': {'bind': '/var/lib/mysql', 'mode': 'rw'},
|
|
'/tmp': {'bind': '/tmp', 'mode': 'rw'}
|
|
}
|
|
self.app.create_backup(context, backup_info,
|
|
volumes_mapping=volumes_mapping,
|
|
need_dbuser=True)
|
|
|
|
def get_datastore_log_defs(self):
|
|
owner = cfg.get_configuration_property('database_service_uid')
|
|
datastore_dir = self.app.get_data_dir()
|
|
server_section = configurations.MySQLConfParser.SERVER_CONF_SECTION
|
|
long_query_time = CONF.get(self.manager).get(
|
|
'guest_log_long_query_time') / 1000
|
|
general_log_file = self.build_log_file_name(
|
|
self.GUEST_LOG_DEFS_GENERAL_LABEL, owner,
|
|
datastore_dir=datastore_dir)
|
|
error_log_file = self.validate_log_file('/var/log/mysqld.log', owner)
|
|
slow_query_log_file = self.build_log_file_name(
|
|
self.GUEST_LOG_DEFS_SLOW_QUERY_LABEL, owner,
|
|
datastore_dir=datastore_dir)
|
|
return {
|
|
self.GUEST_LOG_DEFS_GENERAL_LABEL: {
|
|
self.GUEST_LOG_TYPE_LABEL: guest_log.LogType.USER,
|
|
self.GUEST_LOG_USER_LABEL: owner,
|
|
self.GUEST_LOG_FILE_LABEL: general_log_file,
|
|
self.GUEST_LOG_SECTION_LABEL: server_section,
|
|
self.GUEST_LOG_ENABLE_LABEL: {
|
|
'general_log': 'on',
|
|
'general_log_file': general_log_file,
|
|
'log_output': 'file',
|
|
},
|
|
self.GUEST_LOG_DISABLE_LABEL: {
|
|
'general_log': 'off',
|
|
},
|
|
},
|
|
self.GUEST_LOG_DEFS_SLOW_QUERY_LABEL: {
|
|
self.GUEST_LOG_TYPE_LABEL: guest_log.LogType.USER,
|
|
self.GUEST_LOG_USER_LABEL: owner,
|
|
self.GUEST_LOG_FILE_LABEL: slow_query_log_file,
|
|
self.GUEST_LOG_SECTION_LABEL: server_section,
|
|
self.GUEST_LOG_ENABLE_LABEL: {
|
|
'slow_query_log': 'on',
|
|
'slow_query_log_file': slow_query_log_file,
|
|
'long_query_time': long_query_time,
|
|
},
|
|
self.GUEST_LOG_DISABLE_LABEL: {
|
|
'slow_query_log': 'off',
|
|
},
|
|
},
|
|
self.GUEST_LOG_DEFS_ERROR_LABEL: {
|
|
self.GUEST_LOG_TYPE_LABEL: guest_log.LogType.SYS,
|
|
self.GUEST_LOG_USER_LABEL: owner,
|
|
self.GUEST_LOG_FILE_LABEL: error_log_file,
|
|
},
|
|
}
|
|
|
|
def is_log_enabled(self, logname):
|
|
if logname == self.GUEST_LOG_DEFS_GENERAL_LABEL:
|
|
value = self.configuration_manager.get_value('general_log', 'off')
|
|
return value == 'on'
|
|
elif logname == self.GUEST_LOG_DEFS_SLOW_QUERY_LABEL:
|
|
value = self.configuration_manager.get_value('slow_query_log',
|
|
'off')
|
|
return value == 'on'
|
|
|
|
return False
|
|
|
|
def apply_overrides(self, context, overrides):
|
|
LOG.info("Applying overrides (%s).", overrides)
|
|
self.app.apply_overrides(overrides)
|
|
|
|
def reset_password_for_restore(self, ds_version=None,
|
|
data_dir='/var/lib/mysql/data'):
|
|
"""Reset the root password after restore the db data.
|
|
|
|
We create a temporary database container by running mysqld_safe to
|
|
reset the root password.
|
|
"""
|
|
LOG.info('Starting to reset password for restore')
|
|
|
|
try:
|
|
root_pass = self.app.get_auth_password(file="root.cnf")
|
|
except exception.UnprocessableEntity:
|
|
root_pass = utils.generate_random_password()
|
|
self.app.save_password('root', root_pass)
|
|
|
|
with tempfile.NamedTemporaryFile(mode='w') as init_file, \
|
|
tempfile.NamedTemporaryFile(suffix='.err') as err_file:
|
|
operating_system.write_file(
|
|
init_file.name,
|
|
f"ALTER USER 'root'@'localhost' IDENTIFIED BY '{root_pass}';"
|
|
)
|
|
command = (
|
|
f'mysqld_safe --init-file={init_file.name} '
|
|
f'--log-error={err_file.name} '
|
|
f'--datadir={data_dir}'
|
|
)
|
|
extra_volumes = {
|
|
init_file.name: {"bind": init_file.name, "mode": "rw"},
|
|
err_file.name: {"bind": err_file.name, "mode": "rw"},
|
|
}
|
|
|
|
# Allow database service user to access the temporary files.
|
|
for file in [init_file.name, err_file.name]:
|
|
operating_system.chmod(file,
|
|
operating_system.FileMode.SET_ALL_RWX(),
|
|
force=True, as_root=True)
|
|
|
|
try:
|
|
self.app.start_db(ds_version=ds_version, command=command,
|
|
extra_volumes=extra_volumes)
|
|
except Exception as err:
|
|
LOG.error('Failed to reset password for restore, error: %s',
|
|
str(err))
|
|
LOG.debug('Content in init error log file: %s',
|
|
err_file.read())
|
|
raise err
|
|
finally:
|
|
LOG.debug(
|
|
'The init container log: %s',
|
|
docker_util.get_container_logs(self.app.docker_client)
|
|
)
|
|
docker_util.remove_container(self.app.docker_client)
|
|
|
|
LOG.info('Finished to reset password for restore')
|
|
|
|
def _validate_slave_for_replication(self, context, replica_info):
|
|
if replica_info['replication_strategy'] != self.replication_strategy:
|
|
raise exception.IncompatibleReplicationStrategy(
|
|
replica_info.update({
|
|
'guest_strategy': self.replication_strategy
|
|
}))
|
|
|
|
volume_stats = self.get_filesystem_stats(context, None)
|
|
if (volume_stats.get('total', 0.0) <
|
|
replica_info['dataset']['dataset_size']):
|
|
raise exception.InsufficientSpaceForReplica(
|
|
replica_info.update({
|
|
'slave_volume_size': volume_stats.get('total', 0.0)
|
|
}))
|
|
|
|
def attach_replica(self, context, replica_info, slave_config, **kwargs):
|
|
LOG.info("Attaching replica, replica_info: %s", replica_info)
|
|
try:
|
|
if 'replication_strategy' in replica_info:
|
|
self._validate_slave_for_replication(context, replica_info)
|
|
|
|
self.replication.enable_as_slave(self.app, replica_info,
|
|
slave_config)
|
|
except Exception as err:
|
|
LOG.error("Error enabling replication, error: %s", str(err))
|
|
self.status.set_status(service_status.ServiceStatuses.FAILED)
|
|
raise
|
|
|
|
def make_read_only(self, context, read_only):
|
|
LOG.info("Executing make_read_only(%s)", read_only)
|
|
self.app.make_read_only(read_only)
|
|
|
|
def get_latest_txn_id(self, context):
|
|
LOG.info("Calling get_latest_txn_id.")
|
|
return self.app.get_latest_txn_id()
|
|
|
|
def get_last_txn(self, context):
|
|
LOG.info("Calling get_last_txn")
|
|
return self.app.get_last_txn()
|
|
|
|
def wait_for_txn(self, context, txn):
|
|
LOG.info("Calling wait_for_txn.")
|
|
self.app.wait_for_txn(txn)
|
|
|
|
def upgrade(self, context, upgrade_info):
|
|
"""Upgrade the database."""
|
|
LOG.info('Starting to upgrade database, upgrade_info: %s',
|
|
upgrade_info)
|
|
self.app.upgrade(upgrade_info)
|
|
|
|
def rebuild(self, context, ds_version, config_contents=None,
|
|
config_overrides=None):
|
|
"""Restore datastore service after instance rebuild."""
|
|
LOG.info("Starting to restore database service")
|
|
self.status.begin_install()
|
|
|
|
mount_point = CONF.get(CONF.datastore_manager).mount_point
|
|
data_dir = mount_point + '/data'
|
|
operating_system.ensure_directory(data_dir,
|
|
user=CONF.database_service_uid,
|
|
group=CONF.database_service_uid,
|
|
as_root=True)
|
|
# This makes sure the include dir is created.
|
|
self.app.set_data_dir(data_dir)
|
|
|
|
try:
|
|
# Prepare mysql configuration
|
|
LOG.debug('Preparing database configuration')
|
|
self.app.configuration_manager.save_configuration(config_contents)
|
|
self.app.update_overrides(config_overrides)
|
|
|
|
# Start database service.
|
|
# Cinder volume initialization(after formatted) may leave a
|
|
# lost+found folder
|
|
# The --ignore-db-dir option is deprecated in MySQL 5.7. With the
|
|
# introduction of the data dictionary in MySQL 8.0, it became
|
|
# superfluous and was removed in that version.
|
|
command = (f'--ignore-db-dir=lost+found --ignore-db-dir=conf.d '
|
|
f'--datadir={data_dir}')
|
|
self.app.start_db(ds_version=ds_version, command=command)
|
|
except Exception as e:
|
|
LOG.error(f"Failed to restore database service after rebuild, "
|
|
f"error: {str(e)}")
|
|
self.prepare_error = True
|
|
raise
|
|
finally:
|
|
self.status.end_install(error_occurred=self.prepare_error)
|