def node_clear(env, node_name, allow_clear_cluster_node=False):
"""
Remove specified node from various cluster caches.
LibraryEnvironment env provides all for communication with externals
string node_name
bool allow_clear_cluster_node -- flag allows to clear node even if it's
still in a cluster
"""
mocked_envs = []
if not env.is_cib_live:
mocked_envs.append("CIB")
if not env.is_corosync_conf_live:
mocked_envs.append("COROSYNC_CONF")
if mocked_envs:
raise LibraryError(reports.live_environment_required(mocked_envs))
current_nodes = get_existing_nodes_names(env.get_corosync_conf(),
env.get_cib())
if node_name in current_nodes:
env.report_processor.process(
reports.get_problem_creator(
report_codes.FORCE_CLEAR_CLUSTER_NODE,
allow_clear_cluster_node)(
reports.node_to_clear_is_still_in_cluster, node_name))
remove_node(env.cmd_runner(), node_name)
def location_add(lib, argv, modifiers):
"""
Options:
* --force - allow unknown options, allow constraint for any resource type
* -f - CIB file
"""
del lib
modifiers.ensure_only_supported("--force", "-f")
if len(argv) < 4:
raise CmdLineInputError()
constraint_id = argv.pop(0)
rsc_type, rsc_value = parse_args.parse_typed_arg(
argv.pop(0), [RESOURCE_TYPE_RESOURCE, RESOURCE_TYPE_REGEXP],
RESOURCE_TYPE_RESOURCE)
node = argv.pop(0)
score = argv.pop(0)
options = []
# For now we only allow setting resource-discovery
if argv:
for arg in argv:
if '=' in arg:
options.append(arg.split('=', 1))
else:
raise CmdLineInputError(f"bad option '{arg}'")
if (options[-1][0] != "resource-discovery"
and not modifiers.get("--force")):
utils.err("bad option '%s', use --force to override" %
options[-1][0])
id_valid, id_error = utils.validate_xml_id(constraint_id, 'constraint id')
if not id_valid:
utils.err(id_error)
if not utils.is_score(score):
utils.err("invalid score '%s', use integer or INFINITY or -INFINITY" %
score)
required_version = None
if [x for x in options if x[0] == "resource-discovery"]:
required_version = 2, 2, 0
if rsc_type == RESOURCE_TYPE_REGEXP:
required_version = 2, 6, 0
if required_version:
dom = utils.cluster_upgrade_to_version(required_version)
else:
dom = utils.get_cib_dom()
if rsc_type == RESOURCE_TYPE_RESOURCE:
rsc_valid, rsc_error, dummy_correct_id = (
utils.validate_constraint_resource(dom, rsc_value))
if not rsc_valid:
utils.err(rsc_error)
# Verify that specified node exists in the cluster
if not (modifiers.is_specified("-f") or modifiers.get("--force")):
lib_env = utils.get_lib_env()
existing_nodes = get_existing_nodes_names(
corosync_conf=lib_env.get_corosync_conf(),
cib=lib_env.get_cib(),
)
if node not in existing_nodes:
raise error(f"Node '{node}' does not seem to be in the cluster"
", use --force to override")
else:
warn(LOCATION_NODE_VALIDATION_SKIP_MSG)
# Verify current constraint doesn't already exist
# If it does we replace it with the new constraint
dummy_dom, constraintsElement = getCurrentConstraints(dom)
elementsToRemove = []
# If the id matches, or the rsc & node match, then we replace/remove
for rsc_loc in constraintsElement.getElementsByTagName('rsc_location'):
# pylint: disable=too-many-boolean-expressions
if (rsc_loc.getAttribute("id") == constraint_id
or (rsc_loc.getAttribute("node") == node and
((RESOURCE_TYPE_RESOURCE == rsc_type
and rsc_loc.getAttribute("rsc") == rsc_value) or
(RESOURCE_TYPE_REGEXP == rsc_type
and rsc_loc.getAttribute("rsc-pattern") == rsc_value)))):
elementsToRemove.append(rsc_loc)
for etr in elementsToRemove:
constraintsElement.removeChild(etr)
element = dom.createElement("rsc_location")
element.setAttribute("id", constraint_id)
if rsc_type == RESOURCE_TYPE_RESOURCE:
element.setAttribute("rsc", rsc_value)
elif rsc_type == RESOURCE_TYPE_REGEXP:
element.setAttribute("rsc-pattern", rsc_value)
element.setAttribute("node", node)
element.setAttribute("score", score)
for option in options:
element.setAttribute(option[0], option[1])
constraintsElement.appendChild(element)
utils.replace_cib_configuration(dom)
def cluster_destroy(argv):
if argv:
raise CmdLineInputError()
if "--all" in utils.pcs_options:
# destroy remote and guest nodes
cib = None
lib_env = utils.get_lib_env()
try:
cib = lib_env.get_cib()
except LibraryError as e:
warn("Unable to load CIB to get guest and remote nodes from it, "
"those nodes will not be deconfigured.")
if cib is not None:
try:
all_remote_nodes = get_existing_nodes_names(cib=cib)
if len(all_remote_nodes) > 0:
_destroy_pcmk_remote_env(lib_env,
all_remote_nodes,
skip_offline_nodes=True,
allow_fails=True)
except LibraryError as e:
utils.process_library_reports(e.args)
# destroy full-stack nodes
destroy_cluster(utils.get_corosync_conf_facade().get_nodes_names())
else:
print("Shutting down pacemaker/corosync services...")
for service in ["pacemaker", "corosync-qdevice", "corosync"]:
# Returns an error if a service is not running. It is safe to
# ignore it since we want it not to be running anyways.
utils.stop_service(service)
print("Killing any remaining services...")
kill_local_cluster_services()
try:
utils.disableServices()
except:
# previously errors were suppressed in here, let's keep it that way
# for now
pass
try:
disable_service(utils.cmd_runner(), lib_sbd.get_sbd_service_name())
except:
# it's not a big deal if sbd disable fails
pass
print("Removing all cluster configuration files...")
dummy_output, dummy_retval = utils.run([
"rm",
"-f",
settings.corosync_conf_file,
settings.corosync_authkey_file,
settings.pacemaker_authkey_file,
])
state_files = [
"cib.xml*", "cib-*", "core.*", "hostcache", "cts.*", "pe*.bz2",
"cib.*"
]
for name in state_files:
dummy_output, dummy_retval = utils.run([
"find", "/var/lib/pacemaker", "-name", name, "-exec", "rm",
"-f", "{}", ";"
])
try:
qdevice_net.client_destroy()
except:
# errors from deleting other files are suppressed as well
# we do not want to fail if qdevice was not set up
pass