def _discover_marked_host(
*,
config_cache: config.ConfigCache,
host_config: config.HostConfig,
autodiscovery_queue: _AutodiscoveryQueue,
reference_time: float,
oldest_queued: float,
) -> bool:
host_name = host_config.hostname
console.verbose(f"{tty.bold}{host_name}{tty.normal}:\n")
if host_config.discovery_check_parameters is None:
console.verbose(" failed: discovery check disabled\n")
return False
rediscovery_parameters = host_config.discovery_check_parameters.get(
"inventory_rediscovery", {})
reason = _may_rediscover(
rediscovery_parameters=rediscovery_parameters,
reference_time=reference_time,
oldest_queued=oldest_queued,
)
if reason:
console.verbose(f" skipped: {reason}\n")
return False
result = automation_discovery(
config_cache=config_cache,
host_config=host_config,
mode=DiscoveryMode(rediscovery_parameters.get("mode")),
service_filters=_ServiceFilters.from_settings(rediscovery_parameters),
on_error=OnError.IGNORE,
use_cached_snmp_data=True,
# autodiscovery is run every 5 minutes (see
# omd/packages/check_mk/skel/etc/cron.d/cmk_discovery)
# make sure we may use the file the active discovery check left behind:
max_cachefile_age=config.max_cachefile_age(discovery=600),
)
if result.error_text is not None:
# for offline hosts the error message is empty. This is to remain
# compatible with the automation code
console.verbose(
f" failed: {result.error_text or 'host is offline'}\n")
# delete the file even in error case, otherwise we might be causing the same error
# every time the cron job runs
autodiscovery_queue.remove(host_name)
return False
something_changed = (result.self_new != 0 or result.self_removed != 0
or result.self_kept != result.self_total
or result.clustered_new != 0
or result.clustered_vanished != 0
or result.self_new_host_labels != 0)
if not something_changed:
console.verbose(" nothing changed.\n")
activation_required = False
else:
console.verbose(
f" {result.self_new} new, {result.self_removed} removed, "
f"{result.self_kept} kept, {result.self_total} total services "
f"and {result.self_new_host_labels} new host labels. "
f"clustered new {result.clustered_new}, clustered vanished "
f"{result.clustered_vanished}")
# Note: Even if the actual mark-for-discovery flag may have been created by a cluster host,
# the activation decision is based on the discovery configuration of the node
activation_required = bool(rediscovery_parameters["activation"])
# Enforce base code creating a new host config object after this change
config_cache.invalidate_host_config(host_name)
# Now ensure that the discovery service is updated right after the changes
schedule_discovery_check(host_name)
autodiscovery_queue.remove(host_name)
return activation_required
def _discover_marked_host(config_cache: config.ConfigCache, host_config: config.HostConfig,
now_ts: float, oldest_queued: float) -> bool:
host_name = host_config.hostname
something_changed = False
console.verbose(f"{tty.bold}{host_name}{tty.normal}:\n")
host_flag_path = os.path.join(_get_autodiscovery_dir(), host_name)
params = host_config.discovery_check_parameters
if params is None:
console.verbose(" failed: discovery check disabled\n")
return False
reason = _may_rediscover(params, now_ts, oldest_queued)
if not reason:
result = discover_on_host(
config_cache=config_cache,
host_config=host_config,
mode=DiscoveryMode(_get_rediscovery_parameters(params).get("mode")),
service_filters=_ServiceFilters.from_settings(_get_rediscovery_parameters(params)),
on_error="ignore",
use_cached_snmp_data=True,
# autodiscovery is run every 5 minutes (see
# omd/packages/check_mk/skel/etc/cron.d/cmk_discovery)
# make sure we may use the file the active discovery check left behind:
max_cachefile_age=600,
)
if result.error_text is not None:
if result.error_text:
console.verbose(f"failed: {result.error_text}\n")
else:
# for offline hosts the error message is empty. This is to remain
# compatible with the automation code
console.verbose(" failed: host is offline\n")
else:
if result.self_new == 0 and\
result.self_removed == 0 and\
result.self_kept == result.self_total and\
result.clustered_new == 0 and\
result.clustered_vanished == 0 and\
result.self_new_host_labels == 0:
console.verbose(" nothing changed.\n")
else:
console.verbose(f" {result.self_new} new, {result.self_removed} removed, "
f"{result.self_kept} kept, {result.self_total} total services "
f"and {result.self_new_host_labels} new host labels. "
f"clustered new {result.clustered_new}, clustered vanished "
f"{result.clustered_vanished}")
# Note: Even if the actual mark-for-discovery flag may have been created by a cluster host,
# the activation decision is based on the discovery configuration of the node
if _get_rediscovery_parameters(params)["activation"]:
something_changed = True
# Enforce base code creating a new host config object after this change
config_cache.invalidate_host_config(host_name)
# Now ensure that the discovery service is updated right after the changes
schedule_discovery_check(host_name)
# delete the file even in error case, otherwise we might be causing the same error
# every time the cron job runs
try:
os.remove(host_flag_path)
except OSError:
pass
else:
console.verbose(f" skipped: {reason}\n")
return something_changed
