def add_device(lib_env,
model,
model_options,
generic_options,
force_model=False,
force_options=False,
skip_offline_nodes=False):
"""
Add quorum device to cluster, distribute and reload configs if live
model quorum device model
model_options model specific options dict
generic_options generic quorum device options dict
force_model continue even if the model is not valid
force_options continue even if options are not valid
skip_offline_nodes continue even if not all nodes are accessible
"""
__ensure_not_cman(lib_env)
cfg = lib_env.get_corosync_conf()
# Try adding qdevice to corosync.conf. This validates all the options and
# makes sure qdevice is not defined in corosync.conf yet.
cfg.add_quorum_device(lib_env.report_processor, model, model_options,
generic_options, force_model, force_options)
target_list = lib_env.get_node_target_factory().get_target_list(
cfg.get_nodes())
# First setup certificates for qdevice, then send corosync.conf to nodes.
# If anything fails, nodes will not have corosync.conf with qdevice in it,
# so there is no effect on the cluster.
if lib_env.is_corosync_conf_live:
# do model specific configuration
# if model is not known to pcs and was forced, do not configure antyhing
# else but corosync.conf, as we do not know what to do anyways
if model == "net":
_add_device_model_net(
lib_env,
# we are sure it's there, it was validated in add_quorum_device
model_options["host"],
cfg.get_cluster_name(),
cfg.get_nodes(),
skip_offline_nodes)
lib_env.report_processor.process(
reports.service_enable_started("corosync-qdevice"))
com_cmd = qdevice_com.Enable(lib_env.report_processor,
skip_offline_nodes)
com_cmd.set_targets(target_list)
run_and_raise(lib_env.get_node_communicator(), com_cmd)
# everything set up, it's safe to tell the nodes to use qdevice
lib_env.push_corosync_conf(cfg, skip_offline_nodes)
# Now, when corosync.conf has been reloaded, we can start qdevice service.
if lib_env.is_corosync_conf_live:
lib_env.report_processor.process(
reports.service_start_started("corosync-qdevice"))
com_cmd = qdevice_com.Start(lib_env.report_processor,
skip_offline_nodes)
com_cmd.set_targets(target_list)
run_and_raise(lib_env.get_node_communicator(), com_cmd)
def _service_start(lib_env, func):
lib_env.report_processor.process(
reports.service_start_started("quorum device"))
try:
func(lib_env.cmd_runner())
except external.StartServiceError as e:
raise LibraryError(reports.service_start_error(e.service, e.message))
lib_env.report_processor.process(
reports.service_start_success("quorum device"))
def _service_start(lib_env, func):
lib_env.report_processor.process(
reports.service_start_started("quorum device")
)
try:
func(lib_env.cmd_runner())
except external.StartServiceError as e:
raise LibraryError(
reports.service_start_error(e.service, e.message)
)
lib_env.report_processor.process(
reports.service_start_success("quorum device")
)
def add_device(lib_env,
model,
model_options,
generic_options,
heuristics_options,
force_model=False,
force_options=False,
skip_offline_nodes=False):
"""
Add a quorum device to a cluster, distribute and reload configs if live
string model -- quorum device model
dict model_options -- model specific options
dict generic_options -- generic quorum device options
dict heuristics_options -- heuristics options
bool force_model -- continue even if the model is not valid
bool force_options -- continue even if options are not valid
bool skip_offline_nodes -- continue even if not all nodes are accessible
"""
cfg = lib_env.get_corosync_conf()
if cfg.has_quorum_device():
raise LibraryError(reports.qdevice_already_defined())
lib_env.report_processor.process_list(
corosync_conf_validators.add_quorum_device(
model,
model_options,
generic_options,
heuristics_options, [node.nodeid for node in cfg.get_nodes()],
force_model=force_model,
force_options=force_options))
cfg.add_quorum_device(
model,
model_options,
generic_options,
heuristics_options,
)
if cfg.is_quorum_device_heuristics_enabled_with_no_exec():
lib_env.report_processor.process(
reports.corosync_quorum_heuristics_enabled_with_no_exec())
# First setup certificates for qdevice, then send corosync.conf to nodes.
# If anything fails, nodes will not have corosync.conf with qdevice in it,
# so there is no effect on the cluster.
if lib_env.is_corosync_conf_live:
target_factory = lib_env.get_node_target_factory()
target_list = target_factory.get_target_list(
cfg.get_nodes_names(),
skip_non_existing=skip_offline_nodes,
)
# Do model specific configuration.
# If the model is not known to pcs and was forced, do not configure
# anything else than corosync.conf, as we do not know what to do
# anyway.
if model == "net":
qdevice_net.set_up_client_certificates(
lib_env.cmd_runner(),
lib_env.report_processor,
lib_env.communicator_factory,
# We are sure the "host" key is there, it has been validated
# above.
target_factory.get_target_from_hostname(model_options["host"]),
cfg.get_cluster_name(),
target_list,
skip_offline_nodes)
lib_env.report_processor.process(
reports.service_enable_started("corosync-qdevice"))
com_cmd = qdevice_com.Enable(lib_env.report_processor,
skip_offline_nodes)
com_cmd.set_targets(target_list)
run_and_raise(lib_env.get_node_communicator(), com_cmd)
# everything set up, it's safe to tell the nodes to use qdevice
lib_env.push_corosync_conf(cfg, skip_offline_nodes)
# Now, when corosync.conf has been reloaded, we can start qdevice service.
if lib_env.is_corosync_conf_live:
lib_env.report_processor.process(
reports.service_start_started("corosync-qdevice"))
com_cmd = qdevice_com.Start(lib_env.report_processor,
skip_offline_nodes)
com_cmd.set_targets(target_list)
run_and_raise(lib_env.get_node_communicator(), com_cmd)
def add_device(
lib_env, model, model_options, generic_options, force_model=False,
force_options=False, skip_offline_nodes=False
):
"""
Add quorum device to cluster, distribute and reload configs if live
model quorum device model
model_options model specific options dict
generic_options generic quorum device options dict
force_model continue even if the model is not valid
force_options continue even if options are not valid
skip_offline_nodes continue even if not all nodes are accessible
"""
__ensure_not_cman(lib_env)
cfg = lib_env.get_corosync_conf()
# Try adding qdevice to corosync.conf. This validates all the options and
# makes sure qdevice is not defined in corosync.conf yet.
cfg.add_quorum_device(
lib_env.report_processor,
model,
model_options,
generic_options,
force_model,
force_options
)
# First setup certificates for qdevice, then send corosync.conf to nodes.
# If anything fails, nodes will not have corosync.conf with qdevice in it,
# so there is no effect on the cluster.
if lib_env.is_corosync_conf_live:
# do model specific configuration
# if model is not known to pcs and was forced, do not configure antyhing
# else but corosync.conf, as we do not know what to do anyways
if model == "net":
_add_device_model_net(
lib_env,
# we are sure it's there, it was validated in add_quorum_device
model_options["host"],
cfg.get_cluster_name(),
cfg.get_nodes(),
skip_offline_nodes
)
lib_env.report_processor.process(
reports.service_enable_started("corosync-qdevice")
)
communicator = lib_env.node_communicator()
parallel_nodes_communication_helper(
qdevice_client.remote_client_enable,
[
[(lib_env.report_processor, communicator, node), {}]
for node in cfg.get_nodes()
],
lib_env.report_processor,
skip_offline_nodes
)
# everything set up, it's safe to tell the nodes to use qdevice
lib_env.push_corosync_conf(cfg, skip_offline_nodes)
# Now, when corosync.conf has been reloaded, we can start qdevice service.
if lib_env.is_corosync_conf_live:
lib_env.report_processor.process(
reports.service_start_started("corosync-qdevice")
)
communicator = lib_env.node_communicator()
parallel_nodes_communication_helper(
qdevice_client.remote_client_start,
[
[(lib_env.report_processor, communicator, node), {}]
for node in cfg.get_nodes()
],
lib_env.report_processor,
skip_offline_nodes
)
def add_device(
lib_env, model, model_options, generic_options, heuristics_options,
force_model=False, force_options=False, skip_offline_nodes=False
):
"""
Add a quorum device to a cluster, distribute and reload configs if live
string model -- quorum device model
dict model_options -- model specific options
dict generic_options -- generic quorum device options
dict heuristics_options -- heuristics options
bool force_model -- continue even if the model is not valid
bool force_options -- continue even if options are not valid
bool skip_offline_nodes -- continue even if not all nodes are accessible
"""
cfg = lib_env.get_corosync_conf()
if cfg.has_quorum_device():
raise LibraryError(reports.qdevice_already_defined())
report_processor = SimpleReportProcessor(lib_env.report_processor)
report_processor.report_list(
corosync_conf_validators.add_quorum_device(
model,
model_options,
generic_options,
heuristics_options,
[node.nodeid for node in cfg.get_nodes()],
force_model=force_model,
force_options=force_options
)
)
if lib_env.is_corosync_conf_live:
cluster_nodes_names, report_list = get_existing_nodes_names(
cfg,
# Pcs is unable to communicate with nodes missing names. It cannot
# send new corosync.conf to them. That might break the cluster.
# Hence we error out.
error_on_missing_name=True
)
report_processor.report_list(report_list)
if report_processor.has_errors:
raise LibraryError()
cfg.add_quorum_device(
model,
model_options,
generic_options,
heuristics_options,
)
if cfg.is_quorum_device_heuristics_enabled_with_no_exec():
lib_env.report_processor.process(
reports.corosync_quorum_heuristics_enabled_with_no_exec()
)
# First setup certificates for qdevice, then send corosync.conf to nodes.
# If anything fails, nodes will not have corosync.conf with qdevice in it,
# so there is no effect on the cluster.
if lib_env.is_corosync_conf_live:
target_factory = lib_env.get_node_target_factory()
target_list = target_factory.get_target_list(
cluster_nodes_names, skip_non_existing=skip_offline_nodes,
)
# Do model specific configuration.
# If the model is not known to pcs and was forced, do not configure
# anything else than corosync.conf, as we do not know what to do
# anyway.
if model == "net":
qdevice_net.set_up_client_certificates(
lib_env.cmd_runner(),
lib_env.report_processor,
lib_env.communicator_factory,
# We are sure the "host" key is there, it has been validated
# above.
target_factory.get_target_from_hostname(model_options["host"]),
cfg.get_cluster_name(),
target_list,
skip_offline_nodes
)
lib_env.report_processor.process(
reports.service_enable_started("corosync-qdevice")
)
com_cmd = qdevice_com.Enable(
lib_env.report_processor, skip_offline_nodes
)
com_cmd.set_targets(target_list)
run_and_raise(lib_env.get_node_communicator(), com_cmd)
# everything set up, it's safe to tell the nodes to use qdevice
lib_env.push_corosync_conf(cfg, skip_offline_nodes)
# Now, when corosync.conf has been reloaded, we can start qdevice service.
if lib_env.is_corosync_conf_live:
lib_env.report_processor.process(
reports.service_start_started("corosync-qdevice")
)
com_cmd = qdevice_com.Start(
lib_env.report_processor, skip_offline_nodes
)
com_cmd.set_targets(target_list)
run_and_raise(lib_env.get_node_communicator(), com_cmd)