diff options
Diffstat (limited to 'src/pybind/mgr/telegraf/module.py')
| -rw-r--r-- | src/pybind/mgr/telegraf/module.py | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/src/pybind/mgr/telegraf/module.py b/src/pybind/mgr/telegraf/module.py new file mode 100644 index 00000000..8264fdf3 --- /dev/null +++ b/src/pybind/mgr/telegraf/module.py @@ -0,0 +1,301 @@ +import errno +import json +import itertools +import six +import socket +import time +from threading import Event + +from telegraf.basesocket import BaseSocket +from telegraf.protocol import Line +from mgr_module import MgrModule, PG_STATES + +try: + from urllib.parse import urlparse +except ImportError: + from urlparse import urlparse + + +class Module(MgrModule): + COMMANDS = [ + { + "cmd": "telegraf config-set name=key,type=CephString " + "name=value,type=CephString", + "desc": "Set a configuration value", + "perm": "rw" + }, + { + "cmd": "telegraf config-show", + "desc": "Show current configuration", + "perm": "r" + }, + { + "cmd": "telegraf send", + "desc": "Force sending data to Telegraf", + "perm": "rw" + }, + ] + + MODULE_OPTIONS = [ + { + 'name': 'address', + 'default': 'unixgram:///tmp/telegraf.sock', + }, + { + 'name': 'interval', + 'type': 'secs', + 'default': 15 + } + ] + + ceph_health_mapping = {'HEALTH_OK': 0, 'HEALTH_WARN': 1, 'HEALTH_ERR': 2} + + @property + def config_keys(self): + return dict((o['name'], o.get('default', None)) for o in self.MODULE_OPTIONS) + + def __init__(self, *args, **kwargs): + super(Module, self).__init__(*args, **kwargs) + self.event = Event() + self.run = True + self.fsid = None + self.config = dict() + + def get_fsid(self): + if not self.fsid: + self.fsid = self.get('mon_map')['fsid'] + + return self.fsid + + def get_pool_stats(self): + df = self.get('df') + + df_types = [ + 'bytes_used', + 'kb_used', + 'dirty', + 'rd', + 'rd_bytes', + 'stored_raw', + 'wr', + 'wr_bytes', + 'objects', + 'max_avail', + 'quota_objects', + 'quota_bytes' + ] + + for df_type in df_types: + for pool in df['pools']: + yield { + 'measurement': 'ceph_pool_stats', + 'tags': { + 'pool_name': pool['name'], + 'pool_id': pool['id'], + 'type_instance': df_type, + 'fsid': self.get_fsid() + }, + 'value': pool['stats'][df_type], + } + + def get_daemon_stats(self): + for daemon, counters in six.iteritems(self.get_all_perf_counters()): + svc_type, svc_id = daemon.split('.', 1) + metadata = self.get_metadata(svc_type, svc_id) + if not metadata: + continue + + for path, counter_info in counters.items(): + if counter_info['type'] & self.PERFCOUNTER_HISTOGRAM: + continue + + yield { + 'measurement': 'ceph_daemon_stats', + 'tags': { + 'ceph_daemon': daemon, + 'type_instance': path, + 'host': metadata['hostname'], + 'fsid': self.get_fsid() + }, + 'value': counter_info['value'] + } + + def get_pg_stats(self): + stats = dict() + + pg_status = self.get('pg_status') + for key in ['bytes_total', 'data_bytes', 'bytes_used', 'bytes_avail', + 'num_pgs', 'num_objects', 'num_pools']: + stats[key] = pg_status[key] + + for state in PG_STATES: + stats['num_pgs_{0}'.format(state)] = 0 + + stats['num_pgs'] = pg_status['num_pgs'] + for state in pg_status['pgs_by_state']: + states = state['state_name'].split('+') + for s in PG_STATES: + key = 'num_pgs_{0}'.format(s) + if s in states: + stats[key] += state['count'] + + return stats + + def get_cluster_stats(self): + stats = dict() + + health = json.loads(self.get('health')['json']) + stats['health'] = self.ceph_health_mapping.get(health['status']) + + mon_status = json.loads(self.get('mon_status')['json']) + stats['num_mon'] = len(mon_status['monmap']['mons']) + + stats['mon_election_epoch'] = mon_status['election_epoch'] + stats['mon_outside_quorum'] = len(mon_status['outside_quorum']) + stats['mon_quorum'] = len(mon_status['quorum']) + + osd_map = self.get('osd_map') + stats['num_osd'] = len(osd_map['osds']) + stats['num_pg_temp'] = len(osd_map['pg_temp']) + stats['osd_epoch'] = osd_map['epoch'] + + mgr_map = self.get('mgr_map') + stats['mgr_available'] = int(mgr_map['available']) + stats['num_mgr_standby'] = len(mgr_map['standbys']) + stats['mgr_epoch'] = mgr_map['epoch'] + + num_up = 0 + num_in = 0 + for osd in osd_map['osds']: + if osd['up'] == 1: + num_up += 1 + + if osd['in'] == 1: + num_in += 1 + + stats['num_osd_up'] = num_up + stats['num_osd_in'] = num_in + + fs_map = self.get('fs_map') + stats['num_mds_standby'] = len(fs_map['standbys']) + stats['num_fs'] = len(fs_map['filesystems']) + stats['mds_epoch'] = fs_map['epoch'] + + num_mds_up = 0 + for fs in fs_map['filesystems']: + num_mds_up += len(fs['mdsmap']['up']) + + stats['num_mds_up'] = num_mds_up + stats['num_mds'] = num_mds_up + stats['num_mds_standby'] + + stats.update(self.get_pg_stats()) + + for key, value in stats.items(): + yield { + 'measurement': 'ceph_cluster_stats', + 'tags': { + 'type_instance': key, + 'fsid': self.get_fsid() + }, + 'value': int(value) + } + + def set_config_option(self, option, value): + if option not in self.config_keys.keys(): + raise RuntimeError('{0} is a unknown configuration ' + 'option'.format(option)) + + if option in ['interval']: + try: + value = int(value) + except (ValueError, TypeError): + raise RuntimeError('invalid {0} configured. Please specify ' + 'a valid integer'.format(option)) + + if option == 'interval' and value < 5: + raise RuntimeError('interval should be set to at least 5 seconds') + + self.config[option] = value + + def init_module_config(self): + self.config['address'] = \ + self.get_module_option("address", default=self.config_keys['address']) + self.config['interval'] = \ + int(self.get_module_option("interval", + default=self.config_keys['interval'])) + + def now(self): + return int(round(time.time() * 1000000000)) + + def gather_measurements(self): + return itertools.chain( + self.get_pool_stats(), + self.get_daemon_stats(), + self.get_cluster_stats() + ) + + def send_to_telegraf(self): + url = urlparse(self.config['address']) + + sock = BaseSocket(url) + self.log.debug('Sending data to Telegraf at %s', sock.address) + now = self.now() + try: + with sock as s: + for measurement in self.gather_measurements(): + self.log.debug(measurement) + line = Line(measurement['measurement'], + measurement['value'], + measurement['tags'], now) + self.log.debug(line.to_line_protocol()) + s.send(line.to_line_protocol()) + except (socket.error, RuntimeError, IOError, OSError): + self.log.exception('Failed to send statistics to Telegraf:') + except FileNotFoundError: + self.log.exception('Failed to open Telegraf at: %s', url.geturl()) + + def shutdown(self): + self.log.info('Stopping Telegraf module') + self.run = False + self.event.set() + + def handle_command(self, inbuf, cmd): + if cmd['prefix'] == 'telegraf config-show': + return 0, json.dumps(self.config), '' + elif cmd['prefix'] == 'telegraf config-set': + key = cmd['key'] + value = cmd['value'] + if not value: + return -errno.EINVAL, '', 'Value should not be empty or None' + + self.log.debug('Setting configuration option %s to %s', key, value) + self.set_config_option(key, value) + self.set_module_option(key, value) + return 0, 'Configuration option {0} updated'.format(key), '' + elif cmd['prefix'] == 'telegraf send': + self.send_to_telegraf() + return 0, 'Sending data to Telegraf', '' + + return (-errno.EINVAL, '', + "Command not found '{0}'".format(cmd['prefix'])) + + def self_test(self): + measurements = list(self.gather_measurements()) + if len(measurements) == 0: + raise RuntimeError('No measurements found') + + def serve(self): + self.log.info('Starting Telegraf module') + self.init_module_config() + self.run = True + + self.log.debug('Waiting 10 seconds before starting') + self.event.wait(10) + + while self.run: + start = self.now() + self.send_to_telegraf() + runtime = (self.now() - start) / 1000000 + self.log.debug('Sending data to Telegraf took %d ms', runtime) + self.log.debug("Sleeping for %d seconds", self.config['interval']) + self.event.wait(self.config['interval']) |