X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fpybind%2Fmgr%2Fzabbix%2Fmodule.py;fp=src%2Fceph%2Fsrc%2Fpybind%2Fmgr%2Fzabbix%2Fmodule.py;h=5bb871afe58d41db6906288b5e5229ff592384fa;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/pybind/mgr/zabbix/module.py b/src/ceph/src/pybind/mgr/zabbix/module.py
new file mode 100644
index 0000000..5bb871a
--- /dev/null
+++ b/src/ceph/src/pybind/mgr/zabbix/module.py
@@ -0,0 +1,285 @@
+"""
+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')