--- /dev/null
+"""
+Zabbix module for ceph-mgr
+
+Collect statistics from Ceph cluster and every X seconds send data to a Zabbix
+server using the zabbix_sender executable.
+"""
+import json
+import errno
+from subprocess import Popen, PIPE
+from threading import Event
+from mgr_module import MgrModule
+
+
+def avg(data):
+ if len(data):
+ return sum(data) / float(len(data))
+ else:
+ return 0
+
+
+class ZabbixSender(object):
+ def __init__(self, sender, host, port, log):
+ self.sender = sender
+ self.host = host
+ self.port = port
+ self.log = log
+
+ def send(self, hostname, data):
+ if len(data) == 0:
+ return
+
+ cmd = [self.sender, '-z', self.host, '-p', str(self.port), '-s',
+ hostname, '-vv', '-i', '-']
+
+ proc = Popen(cmd, stdin=PIPE, stdout=PIPE, stderr=PIPE)
+
+ for key, value in data.items():
+ proc.stdin.write('{0} ceph.{1} {2}\n'.format(hostname, key, value))
+
+ stdout, stderr = proc.communicate()
+ if proc.returncode != 0:
+ raise RuntimeError('%s exited non-zero: %s' % (self.sender,
+ stderr))
+
+ self.log.debug('Zabbix Sender: %s', stdout.rstrip())
+
+
+class Module(MgrModule):
+ run = False
+ config = dict()
+ ceph_health_mapping = {'HEALTH_OK': 0, 'HEALTH_WARN': 1, 'HEALTH_ERR': 2}
+
+ config_keys = {
+ 'zabbix_sender': '/usr/bin/zabbix_sender',
+ 'zabbix_host': None,
+ 'zabbix_port': 10051,
+ 'identifier': None, 'interval': 60
+ }
+
+ COMMANDS = [
+ {
+ "cmd": "zabbix config-set name=key,type=CephString "
+ "name=value,type=CephString",
+ "desc": "Set a configuration value",
+ "perm": "rw"
+ },
+ {
+ "cmd": "zabbix config-show",
+ "desc": "Show current configuration",
+ "perm": "r"
+ },
+ {
+ "cmd": "zabbix send",
+ "desc": "Force sending data to Zabbux",
+ "perm": "rw"
+ },
+ {
+ "cmd": "zabbix self-test",
+ "desc": "Run a self-test on the Zabbix module",
+ "perm": "r"
+ }
+ ]
+
+ def __init__(self, *args, **kwargs):
+ super(Module, self).__init__(*args, **kwargs)
+ self.event = Event()
+
+ def init_module_config(self):
+ for key, default in self.config_keys.items():
+ value = self.get_localized_config(key, default)
+ if value is None:
+ raise RuntimeError('Configuration key {0} not set; "ceph '
+ 'config-key set mgr/zabbix/{0} '
+ '<value>"'.format(key))
+
+ self.set_config_option(key, 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 ['zabbix_port', '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 < 10:
+ raise RuntimeError('interval should be set to at least 10 seconds')
+
+ self.config[option] = value
+
+ def get_data(self):
+ data = dict()
+
+ health = json.loads(self.get('health')['json'])
+ # 'status' is luminous+, 'overall_status' is legacy mode.
+ data['overall_status'] = health.get('status',
+ health.get('overall_status'))
+ data['overall_status_int'] = \
+ self.ceph_health_mapping.get(data['overall_status'])
+
+ mon_status = json.loads(self.get('mon_status')['json'])
+ data['num_mon'] = len(mon_status['monmap']['mons'])
+
+ df = self.get('df')
+ data['num_pools'] = len(df['pools'])
+ data['total_objects'] = df['stats']['total_objects']
+ data['total_used_bytes'] = df['stats']['total_used_bytes']
+ data['total_bytes'] = df['stats']['total_bytes']
+ data['total_avail_bytes'] = df['stats']['total_avail_bytes']
+
+ wr_ops = 0
+ rd_ops = 0
+ wr_bytes = 0
+ rd_bytes = 0
+
+ for pool in df['pools']:
+ wr_ops += pool['stats']['wr']
+ rd_ops += pool['stats']['rd']
+ wr_bytes += pool['stats']['wr_bytes']
+ rd_bytes += pool['stats']['rd_bytes']
+
+ data['wr_ops'] = wr_ops
+ data['rd_ops'] = rd_ops
+ data['wr_bytes'] = wr_bytes
+ data['rd_bytes'] = rd_bytes
+
+ osd_map = self.get('osd_map')
+ data['num_osd'] = len(osd_map['osds'])
+ data['osd_nearfull_ratio'] = osd_map['nearfull_ratio']
+ data['osd_full_ratio'] = osd_map['full_ratio']
+ data['osd_backfillfull_ratio'] = osd_map['backfillfull_ratio']
+
+ data['num_pg_temp'] = len(osd_map['pg_temp'])
+
+ 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
+
+ data['num_osd_up'] = num_up
+ data['num_osd_in'] = num_in
+
+ osd_fill = list()
+ osd_apply_latency = list()
+ osd_commit_latency = list()
+
+ osd_stats = self.get('osd_stats')
+ for osd in osd_stats['osd_stats']:
+ if osd['kb'] == 0:
+ continue
+ osd_fill.append((float(osd['kb_used']) / float(osd['kb'])) * 100)
+ osd_apply_latency.append(osd['perf_stat']['apply_latency_ms'])
+ osd_commit_latency.append(osd['perf_stat']['commit_latency_ms'])
+
+ try:
+ data['osd_max_fill'] = max(osd_fill)
+ data['osd_min_fill'] = min(osd_fill)
+ data['osd_avg_fill'] = avg(osd_fill)
+ except ValueError:
+ pass
+
+ try:
+ data['osd_latency_apply_max'] = max(osd_apply_latency)
+ data['osd_latency_apply_min'] = min(osd_apply_latency)
+ data['osd_latency_apply_avg'] = avg(osd_apply_latency)
+
+ data['osd_latency_commit_max'] = max(osd_commit_latency)
+ data['osd_latency_commit_min'] = min(osd_commit_latency)
+ data['osd_latency_commit_avg'] = avg(osd_commit_latency)
+ except ValueError:
+ pass
+
+ pg_summary = self.get('pg_summary')
+ num_pg = 0
+ for state, num in pg_summary['all'].items():
+ num_pg += num
+
+ data['num_pg'] = num_pg
+
+ return data
+
+ def send(self):
+ data = self.get_data()
+
+ self.log.debug('Sending data to Zabbix server %s',
+ self.config['zabbix_host'])
+ self.log.debug(data)
+
+ try:
+ zabbix = ZabbixSender(self.config['zabbix_sender'],
+ self.config['zabbix_host'],
+ self.config['zabbix_port'], self.log)
+ zabbix.send(self.config['identifier'], data)
+ except Exception as exc:
+ self.log.error('Exception when sending: %s', exc)
+
+ def handle_command(self, command):
+ if command['prefix'] == 'zabbix config-show':
+ return 0, json.dumps(self.config), ''
+ elif command['prefix'] == 'zabbix config-set':
+ key = command['key']
+ value = command['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_localized_config(key, value)
+ return 0, 'Configuration option {0} updated'.format(key), ''
+ elif command['prefix'] == 'zabbix send':
+ self.send()
+ return 0, 'Sending data to Zabbix', ''
+ elif command['prefix'] == 'zabbix self-test':
+ self.self_test()
+ return 0, 'Self-test succeeded', ''
+ else:
+ return (-errno.EINVAL, '',
+ "Command not found '{0}'".format(command['prefix']))
+
+ def shutdown(self):
+ self.log.info('Stopping zabbix')
+ self.run = False
+ self.event.set()
+
+ def serve(self):
+ self.log.debug('Zabbix module starting up')
+ self.run = True
+
+ self.init_module_config()
+
+ for key, value in self.config.items():
+ self.log.debug('%s: %s', key, value)
+
+ while self.run:
+ self.log.debug('Waking up for new iteration')
+
+ try:
+ self.send()
+ except Exception as exc:
+ # Shouldn't happen, but let's log it and retry next interval,
+ # rather than dying completely.
+ self.log.exception("Unexpected error during send():")
+
+ interval = self.config['interval']
+ self.log.debug('Sleeping for %d seconds', interval)
+ self.event.wait(interval)
+
+ def self_test(self):
+ data = self.get_data()
+
+ if data['overall_status'] not in self.ceph_health_mapping:
+ raise RuntimeError('No valid overall_status found in data')
+
+ int(data['overall_status_int'])
+
+ if data['num_mon'] < 1:
+ raise RuntimeError('num_mon is smaller than 1')
Code Review / stor4nfv.git / blobdiff