diff options
Diffstat (limited to 'src/pybind/mgr/prometheus/module.py')
| -rw-r--r-- | src/pybind/mgr/prometheus/module.py | 1889 |
1 files changed, 1889 insertions, 0 deletions
diff --git a/src/pybind/mgr/prometheus/module.py b/src/pybind/mgr/prometheus/module.py new file mode 100644 index 000000000..1e47e4aa1 --- /dev/null +++ b/src/pybind/mgr/prometheus/module.py @@ -0,0 +1,1889 @@ +import cherrypy +from collections import defaultdict +from pkg_resources import packaging # type: ignore +import json +import math +import os +import re +import threading +import time +import enum +from mgr_module import CLIReadCommand, MgrModule, MgrStandbyModule, PG_STATES, Option, ServiceInfoT, HandleCommandResult, CLIWriteCommand +from mgr_util import get_default_addr, profile_method, build_url +from rbd import RBD +from collections import namedtuple +import yaml + +from typing import DefaultDict, Optional, Dict, Any, Set, cast, Tuple, Union, List, Callable + +LabelValues = Tuple[str, ...] +Number = Union[int, float] +MetricValue = Dict[LabelValues, Number] + +# Defaults for the Prometheus HTTP server. Can also set in config-key +# see https://github.com/prometheus/prometheus/wiki/Default-port-allocations +# for Prometheus exporter port registry + +DEFAULT_PORT = 9283 + +# When the CherryPy server in 3.2.2 (and later) starts it attempts to verify +# that the ports its listening on are in fact bound. When using the any address +# "::" it tries both ipv4 and ipv6, and in some environments (e.g. kubernetes) +# ipv6 isn't yet configured / supported and CherryPy throws an uncaught +# exception. +if cherrypy is not None: + Version = packaging.version.Version + v = Version(cherrypy.__version__) + # the issue was fixed in 3.2.3. it's present in 3.2.2 (current version on + # centos:7) and back to at least 3.0.0. + if Version("3.1.2") <= v < Version("3.2.3"): + # https://github.com/cherrypy/cherrypy/issues/1100 + from cherrypy.process import servers + servers.wait_for_occupied_port = lambda host, port: None + + +# cherrypy likes to sys.exit on error. don't let it take us down too! +def os_exit_noop(status: int) -> None: + pass + + +os._exit = os_exit_noop # type: ignore + +# to access things in class Module from subclass Root. Because +# it's a dict, the writer doesn't need to declare 'global' for access + +_global_instance = None # type: Optional[Module] +cherrypy.config.update({ + 'response.headers.server': 'Ceph-Prometheus' +}) + + +def health_status_to_number(status: str) -> int: + if status == 'HEALTH_OK': + return 0 + elif status == 'HEALTH_WARN': + return 1 + elif status == 'HEALTH_ERR': + return 2 + raise ValueError(f'unknown status "{status}"') + + +DF_CLUSTER = ['total_bytes', 'total_used_bytes', 'total_used_raw_bytes'] + +DF_POOL = ['max_avail', 'avail_raw', 'stored', 'stored_raw', 'objects', 'dirty', + 'quota_bytes', 'quota_objects', 'rd', 'rd_bytes', 'wr', 'wr_bytes', + 'compress_bytes_used', 'compress_under_bytes', 'bytes_used', 'percent_used'] + +OSD_POOL_STATS = ('recovering_objects_per_sec', 'recovering_bytes_per_sec', + 'recovering_keys_per_sec', 'num_objects_recovered', + 'num_bytes_recovered', 'num_bytes_recovered') + +OSD_FLAGS = ('noup', 'nodown', 'noout', 'noin', 'nobackfill', 'norebalance', + 'norecover', 'noscrub', 'nodeep-scrub') + +FS_METADATA = ('data_pools', 'fs_id', 'metadata_pool', 'name') + +MDS_METADATA = ('ceph_daemon', 'fs_id', 'hostname', 'public_addr', 'rank', + 'ceph_version') + +MON_METADATA = ('ceph_daemon', 'hostname', + 'public_addr', 'rank', 'ceph_version') + +MGR_METADATA = ('ceph_daemon', 'hostname', 'ceph_version') + +MGR_STATUS = ('ceph_daemon',) + +MGR_MODULE_STATUS = ('name',) + +MGR_MODULE_CAN_RUN = ('name',) + +OSD_METADATA = ('back_iface', 'ceph_daemon', 'cluster_addr', 'device_class', + 'front_iface', 'hostname', 'objectstore', 'public_addr', + 'ceph_version') + +OSD_STATUS = ['weight', 'up', 'in'] + +OSD_STATS = ['apply_latency_ms', 'commit_latency_ms'] + +POOL_METADATA = ('pool_id', 'name', 'type', 'description', 'compression_mode') + +RGW_METADATA = ('ceph_daemon', 'hostname', 'ceph_version', 'instance_id') + +RBD_MIRROR_METADATA = ('ceph_daemon', 'id', 'instance_id', 'hostname', + 'ceph_version') + +DISK_OCCUPATION = ('ceph_daemon', 'device', 'db_device', + 'wal_device', 'instance', 'devices', 'device_ids') + +NUM_OBJECTS = ['degraded', 'misplaced', 'unfound'] + +alert_metric = namedtuple('alert_metric', 'name description') +HEALTH_CHECKS = [ + alert_metric('SLOW_OPS', 'OSD or Monitor requests taking a long time to process'), +] + +HEALTHCHECK_DETAIL = ('name', 'severity') + + +class Severity(enum.Enum): + ok = "HEALTH_OK" + warn = "HEALTH_WARN" + error = "HEALTH_ERR" + + +class Format(enum.Enum): + plain = 'plain' + json = 'json' + json_pretty = 'json-pretty' + yaml = 'yaml' + + +class HealthCheckEvent: + + def __init__(self, name: str, severity: Severity, first_seen: float, last_seen: float, count: int, active: bool = True): + self.name = name + self.severity = severity + self.first_seen = first_seen + self.last_seen = last_seen + self.count = count + self.active = active + + def as_dict(self) -> Dict[str, Any]: + """Return the instance as a dictionary.""" + return self.__dict__ + + +class HealthHistory: + kv_name = 'health_history' + titles = "{healthcheck_name:<24} {first_seen:<20} {last_seen:<20} {count:>5} {active:^6}" + date_format = "%Y/%m/%d %H:%M:%S" + + def __init__(self, mgr: MgrModule): + self.mgr = mgr + self.lock = threading.Lock() + self.healthcheck: Dict[str, HealthCheckEvent] = {} + self._load() + + def _load(self) -> None: + """Load the current state from the mons KV store.""" + data = self.mgr.get_store(self.kv_name) + if data: + try: + healthcheck_data = json.loads(data) + except json.JSONDecodeError: + self.mgr.log.warn( + f"INVALID data read from mgr/prometheus/{self.kv_name}. Resetting") + self.reset() + return + else: + for k, v in healthcheck_data.items(): + self.healthcheck[k] = HealthCheckEvent( + name=k, + severity=v.get('severity'), + first_seen=v.get('first_seen', 0), + last_seen=v.get('last_seen', 0), + count=v.get('count', 1), + active=v.get('active', True)) + else: + self.reset() + + def reset(self) -> None: + """Reset the healthcheck history.""" + with self.lock: + self.mgr.set_store(self.kv_name, "{}") + self.healthcheck = {} + + def save(self) -> None: + """Save the current in-memory healthcheck history to the KV store.""" + with self.lock: + self.mgr.set_store(self.kv_name, self.as_json()) + + def check(self, health_checks: Dict[str, Any]) -> None: + """Look at the current health checks and compare existing the history. + + Args: + health_checks (Dict[str, Any]): current health check data + """ + + current_checks = health_checks.get('checks', {}) + changes_made = False + + # first turn off any active states we're tracking + for seen_check in self.healthcheck: + check = self.healthcheck[seen_check] + if check.active and seen_check not in current_checks: + check.active = False + changes_made = True + + # now look for any additions to track + now = time.time() + for name, info in current_checks.items(): + if name not in self.healthcheck: + # this healthcheck is new, so start tracking it + changes_made = True + self.healthcheck[name] = HealthCheckEvent( + name=name, + severity=info.get('severity'), + first_seen=now, + last_seen=now, + count=1, + active=True + ) + else: + # seen it before, so update its metadata + check = self.healthcheck[name] + if check.active: + # check has been registered as active already, so skip + continue + else: + check.last_seen = now + check.count += 1 + check.active = True + changes_made = True + + if changes_made: + self.save() + + def __str__(self) -> str: + """Print the healthcheck history. + + Returns: + str: Human readable representation of the healthcheck history + """ + out = [] + + if len(self.healthcheck.keys()) == 0: + out.append("No healthchecks have been recorded") + else: + out.append(self.titles.format( + healthcheck_name="Healthcheck Name", + first_seen="First Seen (UTC)", + last_seen="Last seen (UTC)", + count="Count", + active="Active") + ) + for k in sorted(self.healthcheck.keys()): + check = self.healthcheck[k] + out.append(self.titles.format( + healthcheck_name=check.name, + first_seen=time.strftime(self.date_format, time.localtime(check.first_seen)), + last_seen=time.strftime(self.date_format, time.localtime(check.last_seen)), + count=check.count, + active="Yes" if check.active else "No") + ) + out.extend([f"{len(self.healthcheck)} health check(s) listed", ""]) + + return "\n".join(out) + + def as_dict(self) -> Dict[str, Any]: + """Return the history in a dictionary. + + Returns: + Dict[str, Any]: dictionary indexed by the healthcheck name + """ + return {name: self.healthcheck[name].as_dict() for name in self.healthcheck} + + def as_json(self, pretty: bool = False) -> str: + """Return the healthcheck history object as a dict (JSON). + + Args: + pretty (bool, optional): whether to json pretty print the history. Defaults to False. + + Returns: + str: str representation of the healthcheck in JSON format + """ + if pretty: + return json.dumps(self.as_dict(), indent=2) + else: + return json.dumps(self.as_dict()) + + def as_yaml(self) -> str: + """Return the healthcheck history in yaml format. + + Returns: + str: YAML representation of the healthcheck history + """ + return yaml.safe_dump(self.as_dict(), explicit_start=True, default_flow_style=False) + + +class Metric(object): + def __init__(self, mtype: str, name: str, desc: str, labels: Optional[LabelValues] = None) -> None: + self.mtype = mtype + self.name = name + self.desc = desc + self.labelnames = labels # tuple if present + self.value: Dict[LabelValues, Number] = {} + + def clear(self) -> None: + self.value = {} + + def set(self, value: Number, labelvalues: Optional[LabelValues] = None) -> None: + # labelvalues must be a tuple + labelvalues = labelvalues or ('',) + self.value[labelvalues] = value + + def str_expfmt(self) -> str: + + def promethize(path: str) -> str: + ''' replace illegal metric name characters ''' + result = re.sub(r'[./\s]|::', '_', path).replace('+', '_plus') + + # Hyphens usually turn into underscores, unless they are + # trailing + if result.endswith("-"): + result = result[0:-1] + "_minus" + else: + result = result.replace("-", "_") + + return "ceph_{0}".format(result) + + def floatstr(value: float) -> str: + ''' represent as Go-compatible float ''' + if value == float('inf'): + return '+Inf' + if value == float('-inf'): + return '-Inf' + if math.isnan(value): + return 'NaN' + return repr(float(value)) + + name = promethize(self.name) + expfmt = ''' +# HELP {name} {desc} +# TYPE {name} {mtype}'''.format( + name=name, + desc=self.desc, + mtype=self.mtype, + ) + + for labelvalues, value in self.value.items(): + if self.labelnames: + labels_list = zip(self.labelnames, labelvalues) + labels = ','.join('%s="%s"' % (k, v) for k, v in labels_list) + else: + labels = '' + if labels: + fmtstr = '\n{name}{{{labels}}} {value}' + else: + fmtstr = '\n{name} {value}' + expfmt += fmtstr.format( + name=name, + labels=labels, + value=floatstr(value), + ) + return expfmt + + def group_by( + self, + keys: List[str], + joins: Dict[str, Callable[[List[str]], str]], + name: Optional[str] = None, + ) -> "Metric": + """ + Groups data by label names. + + Label names not passed are being removed from the resulting metric but + by providing a join function, labels of metrics can be grouped. + + The purpose of this method is to provide a version of a metric that can + be used in matching where otherwise multiple results would be returned. + + As grouping is possible in Prometheus, the only additional value of this + method is the possibility to join labels when grouping. For that reason, + passing joins is required. Please use PromQL expressions in all other + cases. + + >>> m = Metric('type', 'name', '', labels=('label1', 'id')) + >>> m.value = { + ... ('foo', 'x'): 1, + ... ('foo', 'y'): 1, + ... } + >>> m.group_by(['label1'], {'id': lambda ids: ','.join(ids)}).value + {('foo', 'x,y'): 1} + + The functionality of group by could roughly be compared with Prometheus' + + group (ceph_disk_occupation) by (device, instance) + + with the exception that not all labels which aren't used as a condition + to group a metric are discarded, but their values can are joined and the + label is thereby preserved. + + This function takes the value of the first entry of a found group to be + used for the resulting value of the grouping operation. + + >>> m = Metric('type', 'name', '', labels=('label1', 'id')) + >>> m.value = { + ... ('foo', 'x'): 555, + ... ('foo', 'y'): 10, + ... } + >>> m.group_by(['label1'], {'id': lambda ids: ','.join(ids)}).value + {('foo', 'x,y'): 555} + """ + assert self.labelnames, "cannot match keys without label names" + for key in keys: + assert key in self.labelnames, "unknown key: {}".format(key) + assert joins, "joins must not be empty" + assert all(callable(c) for c in joins.values()), "joins must be callable" + + # group + grouped: Dict[LabelValues, List[Tuple[Dict[str, str], Number]]] = defaultdict(list) + for label_values, metric_value in self.value.items(): + labels = dict(zip(self.labelnames, label_values)) + if not all(k in labels for k in keys): + continue + group_key = tuple(labels[k] for k in keys) + grouped[group_key].append((labels, metric_value)) + + # as there is nothing specified on how to join labels that are not equal + # and Prometheus `group` aggregation functions similarly, we simply drop + # those labels. + labelnames = tuple( + label for label in self.labelnames if label in keys or label in joins + ) + superfluous_labelnames = [ + label for label in self.labelnames if label not in labelnames + ] + + # iterate and convert groups with more than one member into a single + # entry + values: MetricValue = {} + for group in grouped.values(): + labels, metric_value = group[0] + + for label in superfluous_labelnames: + del labels[label] + + if len(group) > 1: + for key, fn in joins.items(): + labels[key] = fn(list(labels[key] for labels, _ in group)) + + values[tuple(labels.values())] = metric_value + + new_metric = Metric(self.mtype, name if name else self.name, self.desc, labelnames) + new_metric.value = values + + return new_metric + + +class MetricCounter(Metric): + def __init__(self, + name: str, + desc: str, + labels: Optional[LabelValues] = None) -> None: + super(MetricCounter, self).__init__('counter', name, desc, labels) + self.value = defaultdict(lambda: 0) + + def clear(self) -> None: + pass # Skip calls to clear as we want to keep the counters here. + + def set(self, + value: Number, + labelvalues: Optional[LabelValues] = None) -> None: + msg = 'This method must not be used for instances of MetricCounter class' + raise NotImplementedError(msg) + + def add(self, + value: Number, + labelvalues: Optional[LabelValues] = None) -> None: + # labelvalues must be a tuple + labelvalues = labelvalues or ('',) + self.value[labelvalues] += value + + +class MetricCollectionThread(threading.Thread): + def __init__(self, module: 'Module') -> None: + self.mod = module + self.active = True + self.event = threading.Event() + super(MetricCollectionThread, self).__init__(target=self.collect) + + def collect(self) -> None: + self.mod.log.info('starting metric collection thread') + while self.active: + self.mod.log.debug('collecting cache in thread') + if self.mod.have_mon_connection(): + start_time = time.time() + + try: + data = self.mod.collect() + except Exception: + # Log any issues encountered during the data collection and continue + self.mod.log.exception("failed to collect metrics:") + self.event.wait(self.mod.scrape_interval) + continue + + duration = time.time() - start_time + self.mod.log.debug('collecting cache in thread done') + + sleep_time = self.mod.scrape_interval - duration + if sleep_time < 0: + self.mod.log.warning( + 'Collecting data took more time than configured scrape interval. ' + 'This possibly results in stale data. Please check the ' + '`stale_cache_strategy` configuration option. ' + 'Collecting data took {:.2f} seconds but scrape interval is configured ' + 'to be {:.0f} seconds.'.format( + duration, + self.mod.scrape_interval, + ) + ) + sleep_time = 0 + + with self.mod.collect_lock: + self.mod.collect_cache = data + self.mod.collect_time = duration + + self.event.wait(sleep_time) + else: + self.mod.log.error('No MON connection') + self.event.wait(self.mod.scrape_interval) + + def stop(self) -> None: + self.active = False + self.event.set() + + +class Module(MgrModule): + MODULE_OPTIONS = [ + Option( + 'server_addr' + ), + Option( + 'server_port', + type='int', + default=DEFAULT_PORT, + desc='the port on which the module listens for HTTP requests', + runtime=True + ), + Option( + 'scrape_interval', + type='float', + default=15.0 + ), + Option( + 'stale_cache_strategy', + default='log' + ), + Option( + 'cache', + type='bool', + default=True, + ), + Option( + 'rbd_stats_pools', + default='' + ), + Option( + name='rbd_stats_pools_refresh_interval', + type='int', + default=300 + ), + Option( + name='standby_behaviour', + type='str', + default='default', + enum_allowed=['default', 'error'], + runtime=True + ), + Option( + name='standby_error_status_code', + type='int', + default=500, + min=400, + max=599, + runtime=True + ) + ] + + STALE_CACHE_FAIL = 'fail' + STALE_CACHE_RETURN = 'return' + + def __init__(self, *args: Any, **kwargs: Any) -> None: + super(Module, self).__init__(*args, **kwargs) + self.metrics = self._setup_static_metrics() + self.shutdown_event = threading.Event() + self.collect_lock = threading.Lock() + self.collect_time = 0.0 + self.scrape_interval: float = 15.0 + self.cache = True + self.stale_cache_strategy: str = self.STALE_CACHE_FAIL + self.collect_cache: Optional[str] = None + self.rbd_stats = { + 'pools': {}, + 'pools_refresh_time': 0, + 'counters_info': { + 'write_ops': {'type': self.PERFCOUNTER_COUNTER, + 'desc': 'RBD image writes count'}, + 'read_ops': {'type': self.PERFCOUNTER_COUNTER, + 'desc': 'RBD image reads count'}, + 'write_bytes': {'type': self.PERFCOUNTER_COUNTER, + 'desc': 'RBD image bytes written'}, + 'read_bytes': {'type': self.PERFCOUNTER_COUNTER, + 'desc': 'RBD image bytes read'}, + 'write_latency': {'type': self.PERFCOUNTER_LONGRUNAVG, + 'desc': 'RBD image writes latency (msec)'}, + 'read_latency': {'type': self.PERFCOUNTER_LONGRUNAVG, + 'desc': 'RBD image reads latency (msec)'}, + }, + } # type: Dict[str, Any] + global _global_instance + _global_instance = self + self.metrics_thread = MetricCollectionThread(_global_instance) + self.health_history = HealthHistory(self) + + def _setup_static_metrics(self) -> Dict[str, Metric]: + metrics = {} + metrics['health_status'] = Metric( + 'untyped', + 'health_status', + 'Cluster health status' + ) + metrics['mon_quorum_status'] = Metric( + 'gauge', + 'mon_quorum_status', + 'Monitors in quorum', + ('ceph_daemon',) + ) + metrics['fs_metadata'] = Metric( + 'untyped', + 'fs_metadata', + 'FS Metadata', + FS_METADATA + ) + metrics['mds_metadata'] = Metric( + 'untyped', + 'mds_metadata', + 'MDS Metadata', + MDS_METADATA + ) + metrics['mon_metadata'] = Metric( + 'untyped', + 'mon_metadata', + 'MON Metadata', + MON_METADATA + ) + metrics['mgr_metadata'] = Metric( + 'gauge', + 'mgr_metadata', + 'MGR metadata', + MGR_METADATA + ) + metrics['mgr_status'] = Metric( + 'gauge', + 'mgr_status', + 'MGR status (0=standby, 1=active)', + MGR_STATUS + ) + metrics['mgr_module_status'] = Metric( + 'gauge', + 'mgr_module_status', + 'MGR module status (0=disabled, 1=enabled, 2=auto-enabled)', + MGR_MODULE_STATUS + ) + metrics['mgr_module_can_run'] = Metric( + 'gauge', + 'mgr_module_can_run', + 'MGR module runnable state i.e. can it run (0=no, 1=yes)', + MGR_MODULE_CAN_RUN + ) + metrics['osd_metadata'] = Metric( + 'untyped', + 'osd_metadata', + 'OSD Metadata', + OSD_METADATA + ) + + # The reason for having this separate to OSD_METADATA is + # so that we can stably use the same tag names that + # the Prometheus node_exporter does + metrics['disk_occupation'] = Metric( + 'untyped', + 'disk_occupation', + 'Associate Ceph daemon with disk used', + DISK_OCCUPATION + ) + + metrics['disk_occupation_human'] = Metric( + 'untyped', + 'disk_occupation_human', + 'Associate Ceph daemon with disk used for displaying to humans,' + ' not for joining tables (vector matching)', + DISK_OCCUPATION, # label names are automatically decimated on grouping + ) + + metrics['pool_metadata'] = Metric( + 'untyped', + 'pool_metadata', + 'POOL Metadata', + POOL_METADATA + ) + + metrics['rgw_metadata'] = Metric( + 'untyped', + 'rgw_metadata', + 'RGW Metadata', + RGW_METADATA + ) + + metrics['rbd_mirror_metadata'] = Metric( + 'untyped', + 'rbd_mirror_metadata', + 'RBD Mirror Metadata', + RBD_MIRROR_METADATA + ) + + metrics['pg_total'] = Metric( + 'gauge', + 'pg_total', + 'PG Total Count per Pool', + ('pool_id',) + ) + + metrics['health_detail'] = Metric( + 'gauge', + 'health_detail', + 'healthcheck status by type (0=inactive, 1=active)', + HEALTHCHECK_DETAIL + ) + + for flag in OSD_FLAGS: + path = 'osd_flag_{}'.format(flag) + metrics[path] = Metric( + 'untyped', + path, + 'OSD Flag {}'.format(flag) + ) + for state in OSD_STATUS: + path = 'osd_{}'.format(state) + metrics[path] = Metric( + 'untyped', + path, + 'OSD status {}'.format(state), + ('ceph_daemon',) + ) + for stat in OSD_STATS: + path = 'osd_{}'.format(stat) + metrics[path] = Metric( + 'gauge', + path, + 'OSD stat {}'.format(stat), + ('ceph_daemon',) + ) + for stat in OSD_POOL_STATS: + path = 'pool_{}'.format(stat) + metrics[path] = Metric( + 'gauge', + path, + "OSD pool stats: {}".format(stat), + ('pool_id',) + ) + for state in PG_STATES: + path = 'pg_{}'.format(state) + metrics[path] = Metric( + 'gauge', + path, + 'PG {} per pool'.format(state), + ('pool_id',) + ) + for state in DF_CLUSTER: + path = 'cluster_{}'.format(state) + metrics[path] = Metric( + 'gauge', + path, + 'DF {}'.format(state), + ) + for state in DF_POOL: + path = 'pool_{}'.format(state) + metrics[path] = Metric( + 'counter' if state in ('rd', 'rd_bytes', 'wr', 'wr_bytes') else 'gauge', + path, + 'DF pool {}'.format(state), + ('pool_id',) + ) + for state in NUM_OBJECTS: + path = 'num_objects_{}'.format(state) + metrics[path] = Metric( + 'gauge', + path, + 'Number of {} objects'.format(state), + ) + + for check in HEALTH_CHECKS: + path = 'healthcheck_{}'.format(check.name.lower()) + metrics[path] = Metric( + 'gauge', + path, + check.description, + ) + + return metrics + + def get_server_addr(self) -> str: + """ + Return the current mgr server IP. + """ + server_addr = cast(str, self.get_localized_module_option('server_addr', get_default_addr())) + if server_addr in ['::', '0.0.0.0']: + return self.get_mgr_ip() + return server_addr + + def config_notify(self) -> None: + """ + This method is called whenever one of our config options is changed. + """ + # https://stackoverflow.com/questions/7254845/change-cherrypy-port-and-restart-web-server + # if we omit the line: cherrypy.server.httpserver = None + # then the cherrypy server is not restarted correctly + self.log.info('Restarting engine...') + cherrypy.engine.stop() + cherrypy.server.httpserver = None + server_port = cast(int, self.get_localized_module_option('server_port', DEFAULT_PORT)) + self.set_uri(build_url(scheme='http', host=self.get_server_addr(), port=server_port, path='/')) + cherrypy.config.update({'server.socket_port': server_port}) + cherrypy.engine.start() + self.log.info('Engine started.') + + @profile_method() + def get_health(self) -> None: + + def _get_value(message: str, delim: str = ' ', word_pos: int = 0) -> Tuple[int, int]: + """Extract value from message (default is 1st field)""" + v_str = message.split(delim)[word_pos] + if v_str.isdigit(): + return int(v_str), 0 + return 0, 1 + + health = json.loads(self.get('health')['json']) + # set overall health + self.metrics['health_status'].set( + health_status_to_number(health['status']) + ) + + # Examine the health to see if any health checks triggered need to + # become a specific metric with a value from the health detail + active_healthchecks = health.get('checks', {}) + active_names = active_healthchecks.keys() + + for check in HEALTH_CHECKS: + path = 'healthcheck_{}'.format(check.name.lower()) + + if path in self.metrics: + + if check.name in active_names: + check_data = active_healthchecks[check.name] + message = check_data['summary'].get('message', '') + v, err = 0, 0 + + if check.name == "SLOW_OPS": + # 42 slow ops, oldest one blocked for 12 sec, daemons [osd.0, osd.3] have + # slow ops. + v, err = _get_value(message) + + if err: + self.log.error( + "healthcheck %s message format is incompatible and has been dropped", + check.name) + # drop the metric, so it's no longer emitted + del self.metrics[path] + continue + else: + self.metrics[path].set(v) + else: + # health check is not active, so give it a default of 0 + self.metrics[path].set(0) + + self.health_history.check(health) + for name, info in self.health_history.healthcheck.items(): + v = 1 if info.active else 0 + self.metrics['health_detail'].set( + v, ( + name, + str(info.severity)) + ) + + @profile_method() + def get_pool_stats(self) -> None: + # retrieve pool stats to provide per pool recovery metrics + # (osd_pool_stats moved to mgr in Mimic) + pstats = self.get('osd_pool_stats') + for pool in pstats['pool_stats']: + for stat in OSD_POOL_STATS: + self.metrics['pool_{}'.format(stat)].set( + pool['recovery_rate'].get(stat, 0), + (pool['pool_id'],) + ) + + @profile_method() + def get_df(self) -> None: + # maybe get the to-be-exported metrics from a config? + df = self.get('df') + for stat in DF_CLUSTER: + self.metrics['cluster_{}'.format(stat)].set(df['stats'][stat]) + + for pool in df['pools']: + for stat in DF_POOL: + self.metrics['pool_{}'.format(stat)].set( + pool['stats'][stat], + (pool['id'],) + ) + + @profile_method() + def get_fs(self) -> None: + fs_map = self.get('fs_map') + servers = self.get_service_list() + self.log.debug('standbys: {}'.format(fs_map['standbys'])) + # export standby mds metadata, default standby fs_id is '-1' + for standby in fs_map['standbys']: + id_ = standby['name'] + host, version, _ = servers.get((id_, 'mds'), ('', '', '')) + addr, rank = standby['addr'], standby['rank'] + self.metrics['mds_metadata'].set(1, ( + 'mds.{}'.format(id_), '-1', + cast(str, host), + cast(str, addr), + cast(str, rank), + cast(str, version) + )) + for fs in fs_map['filesystems']: + # collect fs metadata + data_pools = ",".join([str(pool) + for pool in fs['mdsmap']['data_pools']]) + self.metrics['fs_metadata'].set(1, ( + data_pools, + fs['id'], + fs['mdsmap']['metadata_pool'], + fs['mdsmap']['fs_name'] + )) + self.log.debug('mdsmap: {}'.format(fs['mdsmap'])) + for gid, daemon in fs['mdsmap']['info'].items(): + id_ = daemon['name'] + host, version, _ = servers.get((id_, 'mds'), ('', '', '')) + self.metrics['mds_metadata'].set(1, ( + 'mds.{}'.format(id_), fs['id'], + host, daemon['addr'], + daemon['rank'], version + )) + + @profile_method() + def get_quorum_status(self) -> None: + mon_status = json.loads(self.get('mon_status')['json']) + servers = self.get_service_list() + for mon in mon_status['monmap']['mons']: + rank = mon['rank'] + id_ = mon['name'] + mon_version = servers.get((id_, 'mon'), ('', '', '')) + self.metrics['mon_metadata'].set(1, ( + 'mon.{}'.format(id_), mon_version[0], + mon['public_addr'].rsplit(':', 1)[0], rank, + mon_version[1] + )) + in_quorum = int(rank in mon_status['quorum']) + self.metrics['mon_quorum_status'].set(in_quorum, ( + 'mon.{}'.format(id_), + )) + + @profile_method() + def get_mgr_status(self) -> None: + mgr_map = self.get('mgr_map') + servers = self.get_service_list() + + active = mgr_map['active_name'] + standbys = [s.get('name') for s in mgr_map['standbys']] + + all_mgrs = list(standbys) + all_mgrs.append(active) + + all_modules = {module.get('name'): module.get('can_run') + for module in mgr_map['available_modules']} + + for mgr in all_mgrs: + host, version, _ = servers.get((mgr, 'mgr'), ('', '', '')) + if mgr == active: + _state = 1 + else: + _state = 0 + + self.metrics['mgr_metadata'].set(1, ( + f'mgr.{mgr}', host, version + )) + self.metrics['mgr_status'].set(_state, ( + f'mgr.{mgr}',)) + always_on_modules = mgr_map['always_on_modules'].get(self.release_name, []) + active_modules = list(always_on_modules) + active_modules.extend(mgr_map['modules']) + + for mod_name in all_modules.keys(): + + if mod_name in always_on_modules: + _state = 2 + elif mod_name in active_modules: + _state = 1 + else: + _state = 0 + + _can_run = 1 if all_modules[mod_name] else 0 + self.metrics['mgr_module_status'].set(_state, (mod_name,)) + self.metrics['mgr_module_can_run'].set(_can_run, (mod_name,)) + + @profile_method() + def get_pg_status(self) -> None: + + pg_summary = self.get('pg_summary') + + for pool in pg_summary['by_pool']: + num_by_state: DefaultDict[str, int] = defaultdict(int) + + for state_name, count in pg_summary['by_pool'][pool].items(): + for state in state_name.split('+'): + num_by_state[state] += count + num_by_state['total'] += count + + for state, num in num_by_state.items(): + try: + self.metrics["pg_{}".format(state)].set(num, (pool,)) + except KeyError: + self.log.warning("skipping pg in unknown state {}".format(state)) + + @profile_method() + def get_osd_stats(self) -> None: + osd_stats = self.get('osd_stats') + for osd in osd_stats['osd_stats']: + id_ = osd['osd'] + for stat in OSD_STATS: + val = osd['perf_stat'][stat] + self.metrics['osd_{}'.format(stat)].set(val, ( + 'osd.{}'.format(id_), + )) + + def get_service_list(self) -> Dict[Tuple[str, str], Tuple[str, str, str]]: + ret = {} + for server in self.list_servers(): + host = cast(str, server.get('hostname', '')) + for service in cast(List[ServiceInfoT], server.get('services', [])): + ret.update({(service['id'], service['type']): (host, service['ceph_version'], service.get('name', ''))}) + return ret + + @profile_method() + def get_metadata_and_osd_status(self) -> None: + osd_map = self.get('osd_map') + osd_flags = osd_map['flags'].split(',') + for flag in OSD_FLAGS: + self.metrics['osd_flag_{}'.format(flag)].set( + int(flag in osd_flags) + ) + + osd_devices = self.get('osd_map_crush')['devices'] + servers = self.get_service_list() + for osd in osd_map['osds']: + # id can be used to link osd metrics and metadata + id_ = osd['osd'] + # collect osd metadata + p_addr = osd['public_addr'].rsplit(':', 1)[0] + c_addr = osd['cluster_addr'].rsplit(':', 1)[0] + if p_addr == "-" or c_addr == "-": + self.log.info( + "Missing address metadata for osd {0}, skipping occupation" + " and metadata records for this osd".format(id_) + ) + continue + + dev_class = None + for osd_device in osd_devices: + if osd_device['id'] == id_: + dev_class = osd_device.get('class', '') + break + + if dev_class is None: + self.log.info("OSD {0} is missing from CRUSH map, " + "skipping output".format(id_)) + continue + + osd_version = servers.get((str(id_), 'osd'), ('', '', '')) + + # collect disk occupation metadata + osd_metadata = self.get_metadata("osd", str(id_)) + if osd_metadata is None: + continue + + obj_store = osd_metadata.get('osd_objectstore', '') + f_iface = osd_metadata.get('front_iface', '') + b_iface = osd_metadata.get('back_iface', '') + + self.metrics['osd_metadata'].set(1, ( + b_iface, + 'osd.{}'.format(id_), + c_addr, + dev_class, + f_iface, + osd_version[0], + obj_store, + p_addr, + osd_version[1] + )) + + # collect osd status + for state in OSD_STATUS: + status = osd[state] + self.metrics['osd_{}'.format(state)].set(status, ( + 'osd.{}'.format(id_), + )) + + osd_dev_node = None + osd_wal_dev_node = '' + osd_db_dev_node = '' + if obj_store == "filestore": + # collect filestore backend device + osd_dev_node = osd_metadata.get( + 'backend_filestore_dev_node', None) + # collect filestore journal device + osd_wal_dev_node = osd_metadata.get('osd_journal', '') + osd_db_dev_node = '' + elif obj_store == "bluestore": + # collect bluestore backend device + osd_dev_node = osd_metadata.get( + 'bluestore_bdev_dev_node', None) + # collect bluestore wal backend + osd_wal_dev_node = osd_metadata.get('bluefs_wal_dev_node', '') + # collect bluestore db backend + osd_db_dev_node = osd_metadata.get('bluefs_db_dev_node', '') + if osd_dev_node and osd_dev_node == "unknown": + osd_dev_node = None + + # fetch the devices and ids (vendor, model, serial) from the + # osd_metadata + osd_devs = osd_metadata.get('devices', '') or 'N/A' + osd_dev_ids = osd_metadata.get('device_ids', '') or 'N/A' + + osd_hostname = osd_metadata.get('hostname', None) + if osd_dev_node and osd_hostname: + self.log.debug("Got dev for osd {0}: {1}/{2}".format( + id_, osd_hostname, osd_dev_node)) + self.metrics['disk_occupation'].set(1, ( + "osd.{0}".format(id_), + osd_dev_node, + osd_db_dev_node, + osd_wal_dev_node, + osd_hostname, + osd_devs, + osd_dev_ids, + )) + else: + self.log.info("Missing dev node metadata for osd {0}, skipping " + "occupation record for this osd".format(id_)) + + if 'disk_occupation' in self.metrics: + try: + self.metrics['disk_occupation_human'] = \ + self.metrics['disk_occupation'].group_by( + ['device', 'instance'], + {'ceph_daemon': lambda daemons: ', '.join(daemons)}, + name='disk_occupation_human', + ) + except Exception as e: + self.log.error(e) + + ec_profiles = osd_map.get('erasure_code_profiles', {}) + + def _get_pool_info(pool: Dict[str, Any]) -> Tuple[str, str]: + pool_type = 'unknown' + description = 'unknown' + + if pool['type'] == 1: + pool_type = "replicated" + description = f"replica:{pool['size']}" + elif pool['type'] == 3: + pool_type = "erasure" + name = pool.get('erasure_code_profile', '') + profile = ec_profiles.get(name, {}) + if profile: + description = f"ec:{profile['k']}+{profile['m']}" + else: + description = "ec:unknown" + + return pool_type, description + + for pool in osd_map['pools']: + + compression_mode = 'none' + pool_type, pool_description = _get_pool_info(pool) + + if 'options' in pool: + compression_mode = pool['options'].get('compression_mode', 'none') + + self.metrics['pool_metadata'].set( + 1, ( + pool['pool'], + pool['pool_name'], + pool_type, + pool_description, + compression_mode) + ) + + # Populate other servers metadata + for key, value in servers.items(): + service_id, service_type = key + if service_type == 'rgw': + hostname, version, name = value + self.metrics['rgw_metadata'].set( + 1, + ('{}.{}'.format(service_type, name), + hostname, version, service_id) + ) + elif service_type == 'rbd-mirror': + mirror_metadata = self.get_metadata('rbd-mirror', service_id) + if mirror_metadata is None: + continue + mirror_metadata['ceph_daemon'] = '{}.{}'.format(service_type, + service_id) + rbd_mirror_metadata = cast(LabelValues, + (mirror_metadata.get(k, '') + for k in RBD_MIRROR_METADATA)) + self.metrics['rbd_mirror_metadata'].set( + 1, rbd_mirror_metadata + ) + + @profile_method() + def get_num_objects(self) -> None: + pg_sum = self.get('pg_summary')['pg_stats_sum']['stat_sum'] + for obj in NUM_OBJECTS: + stat = 'num_objects_{}'.format(obj) + self.metrics[stat].set(pg_sum[stat]) + + @profile_method() + def get_rbd_stats(self) -> None: + # Per RBD image stats is collected by registering a dynamic osd perf + # stats query that tells OSDs to group stats for requests associated + # with RBD objects by pool, namespace, and image id, which are + # extracted from the request object names or other attributes. + # The RBD object names have the following prefixes: + # - rbd_data.{image_id}. (data stored in the same pool as metadata) + # - rbd_data.{pool_id}.{image_id}. (data stored in a dedicated data pool) + # - journal_data.{pool_id}.{image_id}. (journal if journaling is enabled) + # The pool_id in the object name is the id of the pool with the image + # metdata, and should be used in the image spec. If there is no pool_id + # in the object name, the image pool is the pool where the object is + # located. + + # Parse rbd_stats_pools option, which is a comma or space separated + # list of pool[/namespace] entries. If no namespace is specifed the + # stats are collected for every namespace in the pool. The wildcard + # '*' can be used to indicate all pools or namespaces + pools_string = cast(str, self.get_localized_module_option('rbd_stats_pools')) + pool_keys = [] + for x in re.split(r'[\s,]+', pools_string): + if not x: + continue + + s = x.split('/', 2) + pool_name = s[0] + namespace_name = None + if len(s) == 2: + namespace_name = s[1] + + if pool_name == "*": + # collect for all pools + osd_map = self.get('osd_map') + for pool in osd_map['pools']: + if 'rbd' not in pool.get('application_metadata', {}): + continue + pool_keys.append((pool['pool_name'], namespace_name)) + else: + pool_keys.append((pool_name, namespace_name)) + + pools = {} # type: Dict[str, Set[str]] + for pool_key in pool_keys: + pool_name = pool_key[0] + namespace_name = pool_key[1] + if not namespace_name or namespace_name == "*": + # empty set means collect for all namespaces + pools[pool_name] = set() + continue + + if pool_name not in pools: + pools[pool_name] = set() + elif not pools[pool_name]: + continue + pools[pool_name].add(namespace_name) + + rbd_stats_pools = {} + for pool_id in self.rbd_stats['pools'].keys(): + name = self.rbd_stats['pools'][pool_id]['name'] + if name not in pools: + del self.rbd_stats['pools'][pool_id] + else: + rbd_stats_pools[name] = \ + self.rbd_stats['pools'][pool_id]['ns_names'] + + pools_refreshed = False + if pools: + next_refresh = self.rbd_stats['pools_refresh_time'] + \ + self.get_localized_module_option( + 'rbd_stats_pools_refresh_interval', 300) + if rbd_stats_pools != pools or time.time() >= next_refresh: + self.refresh_rbd_stats_pools(pools) + pools_refreshed = True + + pool_ids = list(self.rbd_stats['pools']) + pool_ids.sort() + pool_id_regex = '^(' + '|'.join([str(x) for x in pool_ids]) + ')$' + + nspace_names = [] + for pool_id, pool in self.rbd_stats['pools'].items(): + if pool['ns_names']: + nspace_names.extend(pool['ns_names']) + else: + nspace_names = [] + break + if nspace_names: + namespace_regex = '^(' + \ + "|".join([re.escape(x) + for x in set(nspace_names)]) + ')$' + else: + namespace_regex = '^(.*)$' + + if ('query' in self.rbd_stats + and (pool_id_regex != self.rbd_stats['query']['key_descriptor'][0]['regex'] + or namespace_regex != self.rbd_stats['query']['key_descriptor'][1]['regex'])): + self.remove_osd_perf_query(self.rbd_stats['query_id']) + del self.rbd_stats['query_id'] + del self.rbd_stats['query'] + + if not self.rbd_stats['pools']: + return + + counters_info = self.rbd_stats['counters_info'] + + if 'query_id' not in self.rbd_stats: + query = { + 'key_descriptor': [ + {'type': 'pool_id', 'regex': pool_id_regex}, + {'type': 'namespace', 'regex': namespace_regex}, + {'type': 'object_name', + 'regex': r'^(?:rbd|journal)_data\.(?:([0-9]+)\.)?([^.]+)\.'}, + ], + 'performance_counter_descriptors': list(counters_info), + } + query_id = self.add_osd_perf_query(query) + if query_id is None: + self.log.error('failed to add query %s' % query) + return + self.rbd_stats['query'] = query + self.rbd_stats['query_id'] = query_id + + res = self.get_osd_perf_counters(self.rbd_stats['query_id']) + assert res + for c in res['counters']: + # if the pool id is not found in the object name use id of the + # pool where the object is located + if c['k'][2][0]: + pool_id = int(c['k'][2][0]) + else: + pool_id = int(c['k'][0][0]) + if pool_id not in self.rbd_stats['pools'] and not pools_refreshed: + self.refresh_rbd_stats_pools(pools) + pools_refreshed = True + if pool_id not in self.rbd_stats['pools']: + continue + pool = self.rbd_stats['pools'][pool_id] + nspace_name = c['k'][1][0] + if nspace_name not in pool['images']: + continue + image_id = c['k'][2][1] + if image_id not in pool['images'][nspace_name] and \ + not pools_refreshed: + self.refresh_rbd_stats_pools(pools) + pool = self.rbd_stats['pools'][pool_id] + pools_refreshed = True + if image_id not in pool['images'][nspace_name]: + continue + counters = pool['images'][nspace_name][image_id]['c'] + for i in range(len(c['c'])): + counters[i][0] += c['c'][i][0] + counters[i][1] += c['c'][i][1] + + label_names = ("pool", "namespace", "image") + for pool_id, pool in self.rbd_stats['pools'].items(): + pool_name = pool['name'] + for nspace_name, images in pool['images'].items(): + for image_id in images: + image_name = images[image_id]['n'] + counters = images[image_id]['c'] + i = 0 + for key in counters_info: + counter_info = counters_info[key] + stattype = self._stattype_to_str(counter_info['type']) + labels = (pool_name, nspace_name, image_name) + if counter_info['type'] == self.PERFCOUNTER_COUNTER: + path = 'rbd_' + key + if path not in self.metrics: + self.metrics[path] = Metric( + stattype, + path, + counter_info['desc'], + label_names, + ) + self.metrics[path].set(counters[i][0], labels) + elif counter_info['type'] == self.PERFCOUNTER_LONGRUNAVG: + path = 'rbd_' + key + '_sum' + if path not in self.metrics: + self.metrics[path] = Metric( + stattype, + path, + counter_info['desc'] + ' Total', + label_names, + ) + self.metrics[path].set(counters[i][0], labels) + path = 'rbd_' + key + '_count' + if path not in self.metrics: + self.metrics[path] = Metric( + 'counter', + path, + counter_info['desc'] + ' Count', + label_names, + ) + self.metrics[path].set(counters[i][1], labels) + i += 1 + + def refresh_rbd_stats_pools(self, pools: Dict[str, Set[str]]) -> None: + self.log.debug('refreshing rbd pools %s' % (pools)) + + rbd = RBD() + counters_info = self.rbd_stats['counters_info'] + for pool_name, cfg_ns_names in pools.items(): + try: + pool_id = self.rados.pool_lookup(pool_name) + with self.rados.open_ioctx(pool_name) as ioctx: + if pool_id not in self.rbd_stats['pools']: + self.rbd_stats['pools'][pool_id] = {'images': {}} + pool = self.rbd_stats['pools'][pool_id] + pool['name'] = pool_name + pool['ns_names'] = cfg_ns_names + if cfg_ns_names: + nspace_names = list(cfg_ns_names) + else: + nspace_names = [''] + rbd.namespace_list(ioctx) + for nspace_name in pool['images']: + if nspace_name not in nspace_names: + del pool['images'][nspace_name] + for nspace_name in nspace_names: + if nspace_name and\ + not rbd.namespace_exists(ioctx, nspace_name): + self.log.debug('unknown namespace %s for pool %s' % + (nspace_name, pool_name)) + continue + ioctx.set_namespace(nspace_name) + if nspace_name not in pool['images']: + pool['images'][nspace_name] = {} + namespace = pool['images'][nspace_name] + images = {} + for image_meta in RBD().list2(ioctx): + image = {'n': image_meta['name']} + image_id = image_meta['id'] + if image_id in namespace: + image['c'] = namespace[image_id]['c'] + else: + image['c'] = [[0, 0] for x in counters_info] + images[image_id] = image + pool['images'][nspace_name] = images + except Exception as e: + self.log.error('failed listing pool %s: %s' % (pool_name, e)) + self.rbd_stats['pools_refresh_time'] = time.time() + + def shutdown_rbd_stats(self) -> None: + if 'query_id' in self.rbd_stats: + self.remove_osd_perf_query(self.rbd_stats['query_id']) + del self.rbd_stats['query_id'] + del self.rbd_stats['query'] + self.rbd_stats['pools'].clear() + + def add_fixed_name_metrics(self) -> None: + """ + Add fixed name metrics from existing ones that have details in their names + that should be in labels (not in name). + For backward compatibility, a new fixed name metric is created (instead of replacing) + and details are put in new labels. + Intended for RGW sync perf. counters but extendable as required. + See: https://tracker.ceph.com/issues/45311 + """ + new_metrics = {} + for metric_path, metrics in self.metrics.items(): + # Address RGW sync perf. counters. + match = re.search(r'^data-sync-from-(.*)\.', metric_path) + if match: + new_path = re.sub('from-([^.]*)', 'from-zone', metric_path) + if new_path not in new_metrics: + new_metrics[new_path] = Metric( + metrics.mtype, + new_path, + metrics.desc, + cast(LabelValues, metrics.labelnames) + ('source_zone',) + ) + for label_values, value in metrics.value.items(): + new_metrics[new_path].set(value, label_values + (match.group(1),)) + + self.metrics.update(new_metrics) + + def get_collect_time_metrics(self) -> None: + sum_metric = self.metrics.get('prometheus_collect_duration_seconds_sum') + count_metric = self.metrics.get('prometheus_collect_duration_seconds_count') + if sum_metric is None: + sum_metric = MetricCounter( + 'prometheus_collect_duration_seconds_sum', + 'The sum of seconds took to collect all metrics of this exporter', + ('method',)) + self.metrics['prometheus_collect_duration_seconds_sum'] = sum_metric + if count_metric is None: + count_metric = MetricCounter( + 'prometheus_collect_duration_seconds_count', + 'The amount of metrics gathered for this exporter', + ('method',)) + self.metrics['prometheus_collect_duration_seconds_count'] = count_metric + + # Collect all timing data and make it available as metric, excluding the + # `collect` method because it has not finished at this point and hence + # there's no `_execution_duration` attribute to be found. The + # `_execution_duration` attribute is added by the `profile_method` + # decorator. + for method_name, method in Module.__dict__.items(): + duration = getattr(method, '_execution_duration', None) + if duration is not None: + cast(MetricCounter, sum_metric).add(duration, (method_name,)) + cast(MetricCounter, count_metric).add(1, (method_name,)) + + def get_pg_repaired_objects(self) -> None: + dump = self.get('pg_dump') + for stats in dump['pool_stats']: + path = f'pg_objects_repaired{stats["poolid"]}' + self.metrics[path] = Metric( + 'counter', + 'pg_objects_repaired', + 'Number of objects repaired in a pool Count', + ('poolid',) + ) + + self.metrics[path].set(stats['stat_sum']['num_objects_repaired'], + labelvalues=(stats['poolid'],)) + + @profile_method(True) + def collect(self) -> str: + # Clear the metrics before scraping + for k in self.metrics.keys(): + self.metrics[k].clear() + + self.get_health() + self.get_df() + self.get_pool_stats() + self.get_fs() + self.get_osd_stats() + self.get_quorum_status() + self.get_mgr_status() + self.get_metadata_and_osd_status() + self.get_pg_status() + self.get_pg_repaired_objects() + self.get_num_objects() + + for daemon, counters in self.get_all_perf_counters().items(): + for path, counter_info in counters.items(): + # Skip histograms, they are represented by long running avgs + stattype = self._stattype_to_str(counter_info['type']) + if not stattype or stattype == 'histogram': + self.log.debug('ignoring %s, type %s' % (path, stattype)) + continue + + path, label_names, labels = self._perfpath_to_path_labels( + daemon, path) + + # Get the value of the counter + value = self._perfvalue_to_value( + counter_info['type'], counter_info['value']) + + # Represent the long running avgs as sum/count pairs + if counter_info['type'] & self.PERFCOUNTER_LONGRUNAVG: + _path = path + '_sum' + if _path not in self.metrics: + self.metrics[_path] = Metric( + stattype, + _path, + counter_info['description'] + ' Total', + label_names, + ) + self.metrics[_path].set(value, labels) + + _path = path + '_count' + if _path not in self.metrics: + self.metrics[_path] = Metric( + 'counter', + _path, + counter_info['description'] + ' Count', + label_names, + ) + self.metrics[_path].set(counter_info['count'], labels,) + else: + if path not in self.metrics: + self.metrics[path] = Metric( + stattype, + path, + counter_info['description'], + label_names, + ) + self.metrics[path].set(value, labels) + + self.add_fixed_name_metrics() + self.get_rbd_stats() + + self.get_collect_time_metrics() + + # Return formatted metrics and clear no longer used data + _metrics = [m.str_expfmt() for m in self.metrics.values()] + for k in self.metrics.keys(): + self.metrics[k].clear() + + return ''.join(_metrics) + '\n' + + @CLIReadCommand('prometheus file_sd_config') + def get_file_sd_config(self) -> Tuple[int, str, str]: + ''' + Return file_sd compatible prometheus config for mgr cluster + ''' + servers = self.list_servers() + targets = [] + for server in servers: + hostname = server.get('hostname', '') + for service in cast(List[ServiceInfoT], server.get('services', [])): + if service['type'] != 'mgr': + continue + id_ = service['id'] + port = self._get_module_option('server_port', DEFAULT_PORT, id_) + targets.append(f'{hostname}:{port}') + ret = [ + { + "targets": targets, + "labels": {} + } + ] + return 0, json.dumps(ret), "" + + def self_test(self) -> None: + self.collect() + self.get_file_sd_config() + + def serve(self) -> None: + + class Root(object): + + # collapse everything to '/' + def _cp_dispatch(self, vpath: str) -> 'Root': + cherrypy.request.path = '' + return self + + @cherrypy.expose + def index(self) -> str: + return '''<!DOCTYPE html> +<html> + <head><title>Ceph Exporter</title></head> + <body> + <h1>Ceph Exporter</h1> + <p><a href='/metrics'>Metrics</a></p> + </body> +</html>''' + + @cherrypy.expose + def metrics(self) -> Optional[str]: + # Lock the function execution + assert isinstance(_global_instance, Module) + with _global_instance.collect_lock: + return self._metrics(_global_instance) + + @staticmethod + def _metrics(instance: 'Module') -> Optional[str]: + if not self.cache: + self.log.debug('Cache disabled, collecting and returning without cache') + cherrypy.response.headers['Content-Type'] = 'text/plain' + return self.collect() + + # Return cached data if available + if not instance.collect_cache: + raise cherrypy.HTTPError(503, 'No cached data available yet') + + def respond() -> Optional[str]: + assert isinstance(instance, Module) + cherrypy.response.headers['Content-Type'] = 'text/plain' + return instance.collect_cache + + if instance.collect_time < instance.scrape_interval: + # Respond if cache isn't stale + return respond() + + if instance.stale_cache_strategy == instance.STALE_CACHE_RETURN: + # Respond even if cache is stale + instance.log.info( + 'Gathering data took {:.2f} seconds, metrics are stale for {:.2f} seconds, ' + 'returning metrics from stale cache.'.format( + instance.collect_time, + instance.collect_time - instance.scrape_interval + ) + ) + return respond() + + if instance.stale_cache_strategy == instance.STALE_CACHE_FAIL: + # Fail if cache is stale + msg = ( + 'Gathering data took {:.2f} seconds, metrics are stale for {:.2f} seconds, ' + 'returning "service unavailable".'.format( + instance.collect_time, + instance.collect_time - instance.scrape_interval, + ) + ) + instance.log.error(msg) + raise cherrypy.HTTPError(503, msg) + return None + + # Make the cache timeout for collecting configurable + self.scrape_interval = cast(float, self.get_localized_module_option('scrape_interval')) + + self.stale_cache_strategy = cast( + str, self.get_localized_module_option('stale_cache_strategy')) + if self.stale_cache_strategy not in [self.STALE_CACHE_FAIL, + self.STALE_CACHE_RETURN]: + self.stale_cache_strategy = self.STALE_CACHE_FAIL + + server_addr = cast(str, self.get_localized_module_option( + 'server_addr', get_default_addr())) + server_port = cast(int, self.get_localized_module_option( + 'server_port', DEFAULT_PORT)) + self.log.info( + "server_addr: %s server_port: %s" % + (server_addr, server_port) + ) + + self.cache = cast(bool, self.get_localized_module_option('cache', True)) + if self.cache: + self.log.info('Cache enabled') + self.metrics_thread.start() + else: + self.log.info('Cache disabled') + + cherrypy.config.update({ + 'server.socket_host': server_addr, + 'server.socket_port': server_port, + 'engine.autoreload.on': False + }) + # Publish the URI that others may use to access the service we're + # about to start serving + self.set_uri(build_url(scheme='http', host=self.get_server_addr(), port=server_port, path='/')) + + cherrypy.tree.mount(Root(), "/") + self.log.info('Starting engine...') + cherrypy.engine.start() + self.log.info('Engine started.') + # wait for the shutdown event + self.shutdown_event.wait() + self.shutdown_event.clear() + # tell metrics collection thread to stop collecting new metrics + self.metrics_thread.stop() + cherrypy.engine.stop() + cherrypy.server.httpserver = None + self.log.info('Engine stopped.') + self.shutdown_rbd_stats() + # wait for the metrics collection thread to stop + self.metrics_thread.join() + + def shutdown(self) -> None: + self.log.info('Stopping engine...') + self.shutdown_event.set() + + @CLIReadCommand('healthcheck history ls') + def _list_healthchecks(self, format: Format = Format.plain) -> HandleCommandResult: + """List all the healthchecks being tracked + + The format options are parsed in ceph_argparse, before they get evaluated here so + we can safely assume that what we have to process is valid. ceph_argparse will throw + a ValueError if the cast to our Format class fails. + + Args: + format (Format, optional): output format. Defaults to Format.plain. + + Returns: + HandleCommandResult: return code, stdout and stderr returned to the caller + """ + + out = "" + if format == Format.plain: + out = str(self.health_history) + elif format == Format.yaml: + out = self.health_history.as_yaml() + else: + out = self.health_history.as_json(format == Format.json_pretty) + + return HandleCommandResult(retval=0, stdout=out) + + @CLIWriteCommand('healthcheck history clear') + def _clear_healthchecks(self) -> HandleCommandResult: + """Clear the healthcheck history""" + self.health_history.reset() + return HandleCommandResult(retval=0, stdout="healthcheck history cleared") + + +class StandbyModule(MgrStandbyModule): + + MODULE_OPTIONS = Module.MODULE_OPTIONS + + def __init__(self, *args: Any, **kwargs: Any) -> None: + super(StandbyModule, self).__init__(*args, **kwargs) + self.shutdown_event = threading.Event() + + def serve(self) -> None: + server_addr = self.get_localized_module_option( + 'server_addr', get_default_addr()) + server_port = self.get_localized_module_option( + 'server_port', DEFAULT_PORT) + self.log.info("server_addr: %s server_port: %s" % + (server_addr, server_port)) + cherrypy.config.update({ + 'server.socket_host': server_addr, + 'server.socket_port': server_port, + 'engine.autoreload.on': False, + 'request.show_tracebacks': False + }) + + module = self + + class Root(object): + @cherrypy.expose + def index(self) -> str: + standby_behaviour = module.get_module_option('standby_behaviour') + if standby_behaviour == 'default': + active_uri = module.get_active_uri() + return '''<!DOCTYPE html> +<html> + <head><title>Ceph Exporter</title></head> + <body> + <h1>Ceph Exporter</h1> + <p><a href='{}metrics'>Metrics</a></p> + </body> +</html>'''.format(active_uri) + else: + status = module.get_module_option('standby_error_status_code') + raise cherrypy.HTTPError(status, message="Keep on looking") + + @cherrypy.expose + def metrics(self) -> str: + cherrypy.response.headers['Content-Type'] = 'text/plain' + return '' + + cherrypy.tree.mount(Root(), '/', {}) + self.log.info('Starting engine...') + cherrypy.engine.start() + self.log.info('Engine started.') + # Wait for shutdown event + self.shutdown_event.wait() + self.shutdown_event.clear() + cherrypy.engine.stop() + cherrypy.server.httpserver = None + self.log.info('Engine stopped.') + + def shutdown(self) -> None: + self.log.info("Stopping engine...") + self.shutdown_event.set() + self.log.info("Stopped engine") |