def get_corosync_conf(self) -> CorosyncConfigFacade:
# TODO The architecture of working with corosync.conf needs to be
# overhauled to match the new file framework. The code below is
# complicated, because we read corosync.conf data at one place outside
# of the file framework or get it from outside (from CLI) and then we
# put them back into the framework.
corosync_instance = FileInstance.for_corosync_conf()
try:
facade = cast(
CorosyncConfigFacade,
corosync_instance.raw_to_facade(
self.get_corosync_conf_data().encode("utf-8")),
)
except ParserErrorException as e:
if self.report_processor.report_list(
corosync_instance.toolbox.parser.exception_to_report_list(
e,
corosync_instance.toolbox.file_type_code,
(corosync_instance.raw_file.metadata.path
if self.is_corosync_conf_live else None),
force_code=None,
is_forced_or_warning=False,
)).has_errors:
raise LibraryError() from e
return facade
def get_local_corosync_conf():
"""
Read corosync.conf file from local machine
"""
# TODO The architecture of working with corosync.conf needs to be
# overhauled to match the new file framework.
instance = FileInstance.for_corosync_conf()
try:
return instance.read_raw().decode("utf-8")
except RawFileError as e:
raise LibraryError(raw_file_error_report(e)) from e
def set_recovery_site(env: LibraryEnvironment, node_name: str) -> None:
"""
Set up disaster recovery with the local cluster being the primary site
env
node_name -- a known host from the recovery site
"""
# pylint: disable=too-many-locals
if env.ghost_file_codes:
raise LibraryError(
ReportItem.error(
reports.messages.LiveEnvironmentRequired(
env.ghost_file_codes)))
report_processor = env.report_processor
dr_env = env.get_dr_env()
if dr_env.config.raw_file.exists():
report_processor.report(
ReportItem.error(reports.messages.DrConfigAlreadyExist()))
target_factory = env.get_node_target_factory()
local_nodes, report_list = get_existing_nodes_names(
env.get_corosync_conf(), error_on_missing_name=True)
report_processor.report_list(report_list)
if node_name in local_nodes:
report_processor.report(
ReportItem.error(reports.messages.NodeInLocalCluster(node_name)))
report_list, local_targets = target_factory.get_target_list_with_reports(
local_nodes, allow_skip=False, report_none_host_found=False)
report_processor.report_list(report_list)
report_list, remote_targets = target_factory.get_target_list_with_reports(
[node_name], allow_skip=False, report_none_host_found=False)
report_processor.report_list(report_list)
if report_processor.has_errors:
raise LibraryError()
# TODO The new file framework doesn't support network communication yet.
com_cmd = GetCorosyncConf(env.report_processor)
com_cmd.set_targets(remote_targets)
corosync_conf_instance = FileInstance.for_corosync_conf()
try:
remote_cluster_nodes, report_list = get_existing_nodes_names(
cast(
CorosyncConfigFacade,
corosync_conf_instance.raw_to_facade(
run_and_raise(env.get_node_communicator(),
com_cmd).encode("utf-8")),
),
error_on_missing_name=True,
)
except ParserErrorException as e:
report_processor.report_list(
corosync_conf_instance.toolbox.parser.exception_to_report_list(
e,
file_type_codes.COROSYNC_CONF,
None,
force_code=None,
is_forced_or_warning=False,
))
if report_processor.report_list(report_list).has_errors:
raise LibraryError()
# ensure we have tokens for all nodes of remote cluster
report_list, remote_targets = target_factory.get_target_list_with_reports(
remote_cluster_nodes, allow_skip=False, report_none_host_found=False)
if report_processor.report_list(report_list).has_errors:
raise LibraryError()
dr_config_exporter = get_file_toolbox(
file_type_codes.PCS_DR_CONFIG).exporter
# create dr config for remote cluster
remote_dr_cfg = dr_env.create_facade(DrRole.RECOVERY)
remote_dr_cfg.add_site(DrRole.PRIMARY, local_nodes)
# send config to all node of remote cluster
distribute_file_cmd = DistributeFilesWithoutForces(
env.report_processor,
node_communication_format.pcs_dr_config_file(
dr_config_exporter.export(remote_dr_cfg.config)),
)
distribute_file_cmd.set_targets(remote_targets)
run_and_raise(env.get_node_communicator(), distribute_file_cmd)
# create new dr config, with local cluster as primary site
local_dr_cfg = dr_env.create_facade(DrRole.PRIMARY)
local_dr_cfg.add_site(DrRole.RECOVERY, remote_cluster_nodes)
distribute_file_cmd = DistributeFilesWithoutForces(
env.report_processor,
node_communication_format.pcs_dr_config_file(
dr_config_exporter.export(local_dr_cfg.config)),
)
distribute_file_cmd.set_targets(local_targets)
run_and_raise(env.get_node_communicator(), distribute_file_cmd)