src/ceph/src/pybind/mgr/status/module.py

   1
   2 """
   3 High level status display commands
   4 """
   5
   6 from collections import defaultdict
   7 from prettytable import PrettyTable
   8 import prettytable
   9 import fnmatch
  10 import errno
  11
  12 from mgr_module import MgrModule
  13
  14
  15 class Module(MgrModule):
  16     COMMANDS = [
  17         {
  18             "cmd": "fs status "
  19                    "name=fs,type=CephString,req=false",
  20             "desc": "Show the status of a CephFS filesystem",
  21             "perm": "r"
  22         },
  23         {
  24             "cmd": "osd status "
  25                    "name=bucket,type=CephString,req=false",
  26             "desc": "Show the status of OSDs within a bucket, or all",
  27             "perm": "r"
  28         },
  29     ]
  30
  31     (
  32         BLACK,
  33         RED,
  34         GREEN,
  35         YELLOW,
  36         BLUE,
  37         MAGENTA,
  38         CYAN,
  39         GRAY
  40     ) = range(8)
  41
  42     RESET_SEQ = "\033[0m"
  43     COLOR_SEQ = "\033[1;%dm"
  44     COLOR_DARK_SEQ = "\033[0;%dm"
  45     BOLD_SEQ = "\033[1m"
  46     UNDERLINE_SEQ = "\033[4m"
  47
  48     def colorize(self, msg, color, dark=False):
  49         """
  50         Decorate `msg` with escape sequences to give the requested color
  51         """
  52         return (self.COLOR_DARK_SEQ if dark else self.COLOR_SEQ) % (30 + color) \
  53                + msg + self.RESET_SEQ
  54
  55     def bold(self, msg):
  56         """
  57         Decorate `msg` with escape sequences to make it appear bold
  58         """
  59         return self.BOLD_SEQ + msg + self.RESET_SEQ
  60
  61     def format_units(self, n, width, colored, decimal):
  62         """
  63         Format a number without units, so as to fit into `width` characters, substituting
  64         an appropriate unit suffix.
  65
  66         Use decimal for dimensionless things, use base 2 (decimal=False) for byte sizes/rates.
  67         """
  68
  69         factor = 1000 if decimal else 1024
  70         units = [' ', 'k', 'M', 'G', 'T', 'P']
  71         unit = 0
  72         while len("%s" % (int(n) // (factor**unit))) > width - 1:
  73             unit += 1
  74
  75         if unit > 0:
  76             truncated_float = ("%f" % (n / (float(factor) ** unit)))[0:width - 1]
  77             if truncated_float[-1] == '.':
  78                 truncated_float = " " + truncated_float[0:-1]
  79         else:
  80             truncated_float = "%{wid}d".format(wid=width-1) % n
  81         formatted = "%s%s" % (truncated_float, units[unit])
  82
  83         if colored:
  84             if n == 0:
  85                 color = self.BLACK, False
  86             else:
  87                 color = self.YELLOW, False
  88             return self.bold(self.colorize(formatted[0:-1], color[0], color[1])) \
  89                 + self.bold(self.colorize(formatted[-1], self.BLACK, False))
  90         else:
  91             return formatted
  92
  93     def format_dimless(self, n, width, colored=True):
  94         return self.format_units(n, width, colored, decimal=True)
  95
  96     def format_bytes(self, n, width, colored=True):
  97         return self.format_units(n, width, colored, decimal=False)
  98
  99     def get_latest(self, daemon_type, daemon_name, stat):
 100         data = self.get_counter(daemon_type, daemon_name, stat)[stat]
 101         #self.log.error("get_latest {0} data={1}".format(stat, data))
 102         if data:
 103             return data[-1][1]
 104         else:
 105             return 0
 106
 107     def get_rate(self, daemon_type, daemon_name, stat):
 108         data = self.get_counter(daemon_type, daemon_name, stat)[stat]
 109
 110         #self.log.error("get_latest {0} data={1}".format(stat, data))
 111         if data and len(data) > 1:
 112             return (data[-1][1] - data[-2][1]) / float(data[-1][0] - data[-2][0])
 113         else:
 114             return 0
 115
 116     def handle_fs_status(self, cmd):
 117         output = ""
 118
 119         fs_filter = cmd.get('fs', None)
 120
 121         mds_versions = defaultdict(list)
 122
 123         fsmap = self.get("fs_map")
 124         for filesystem in fsmap['filesystems']:
 125             if fs_filter and filesystem['mdsmap']['fs_name'] != fs_filter:
 126                 continue
 127
 128             rank_table = PrettyTable(
 129                 ("Rank", "State", "MDS", "Activity", "dns", "inos"),
 130                 hrules=prettytable.FRAME
 131             )
 132
 133             mdsmap = filesystem['mdsmap']
 134
 135             client_count = 0
 136
 137             for rank in mdsmap["in"]:
 138                 up = "mds_{0}".format(rank) in mdsmap["up"]
 139                 if up:
 140                     gid = mdsmap['up']["mds_{0}".format(rank)]
 141                     info = mdsmap['info']['gid_{0}'.format(gid)]
 142                     dns = self.get_latest("mds", info['name'], "mds_mem.dn")
 143                     inos = self.get_latest("mds", info['name'], "mds_mem.ino")
 144
 145                     if rank == 0:
 146                         client_count = self.get_latest("mds", info['name'],
 147                                                        "mds_sessions.session_count")
 148                     elif client_count == 0:
 149                         # In case rank 0 was down, look at another rank's
 150                         # sessionmap to get an indication of clients.
 151                         client_count = self.get_latest("mds", info['name'],
 152                                                        "mds_sessions.session_count")
 153
 154                     laggy = "laggy_since" in info
 155
 156                     state = info['state'].split(":")[1]
 157                     if laggy:
 158                         state += "(laggy)"
 159                     if state == "active" and not laggy:
 160                         c_state = self.colorize(state, self.GREEN)
 161                     else:
 162                         c_state = self.colorize(state, self.YELLOW)
 163
 164                     # Populate based on context of state, e.g. client
 165                     # ops for an active daemon, replay progress, reconnect
 166                     # progress
 167                     activity = ""
 168
 169                     if state == "active":
 170                         activity = "Reqs: " + self.format_dimless(
 171                             self.get_rate("mds", info['name'], "mds_server.handle_client_request"),
 172                             5
 173                         ) + "/s"
 174
 175                     metadata = self.get_metadata('mds', info['name'])
 176                     mds_versions[metadata.get('ceph_version', "unknown")].append(info['name'])
 177                     rank_table.add_row([
 178                         self.bold(rank.__str__()), c_state, info['name'],
 179                         activity,
 180                         self.format_dimless(dns, 5),
 181                         self.format_dimless(inos, 5)
 182                     ])
 183
 184                 else:
 185                     rank_table.add_row([
 186                         rank, "failed", "", "", "", ""
 187                     ])
 188
 189             # Find the standby replays
 190             for gid_str, daemon_info in mdsmap['info'].iteritems():
 191                 if daemon_info['state'] != "up:standby-replay":
 192                     continue
 193
 194                 inos = self.get_latest("mds", daemon_info['name'], "mds_mem.ino")
 195                 dns = self.get_latest("mds", daemon_info['name'], "mds_mem.dn")
 196
 197                 activity = "Evts: " + self.format_dimless(
 198                     self.get_rate("mds", daemon_info['name'], "mds_log.replay"),
 199                     5
 200                 ) + "/s"
 201
 202                 rank_table.add_row([
 203                     "{0}-s".format(daemon_info['rank']), "standby-replay",
 204                     daemon_info['name'], activity,
 205                     self.format_dimless(dns, 5),
 206                     self.format_dimless(inos, 5)
 207                 ])
 208
 209             df = self.get("df")
 210             pool_stats = dict([(p['id'], p['stats']) for p in df['pools']])
 211             osdmap = self.get("osd_map")
 212             pools = dict([(p['pool'], p) for p in osdmap['pools']])
 213             metadata_pool_id = mdsmap['metadata_pool']
 214             data_pool_ids = mdsmap['data_pools']
 215
 216             pools_table = PrettyTable(["Pool", "type", "used", "avail"])
 217             for pool_id in [metadata_pool_id] + data_pool_ids:
 218                 pool_type = "metadata" if pool_id == metadata_pool_id else "data"
 219                 stats = pool_stats[pool_id]
 220                 pools_table.add_row([
 221                     pools[pool_id]['pool_name'], pool_type,
 222                     self.format_bytes(stats['bytes_used'], 5),
 223                     self.format_bytes(stats['max_avail'], 5)
 224                 ])
 225
 226             output += "{0} - {1} clients\n".format(
 227                 mdsmap['fs_name'], client_count)
 228             output += "=" * len(mdsmap['fs_name']) + "\n"
 229             output += rank_table.get_string()
 230             output += "\n" + pools_table.get_string() + "\n"
 231
 232         standby_table = PrettyTable(["Standby MDS"])
 233         for standby in fsmap['standbys']:
 234             metadata = self.get_metadata('mds', standby['name'])
 235             mds_versions[metadata.get('ceph_version', "unknown")].append(standby['name'])
 236
 237             standby_table.add_row([standby['name']])
 238
 239         output += "\n" + standby_table.get_string() + "\n"
 240
 241         if len(mds_versions) == 1:
 242             output += "MDS version: {0}".format(mds_versions.keys()[0])
 243         else:
 244             version_table = PrettyTable(["version", "daemons"])
 245             for version, daemons in mds_versions.iteritems():
 246                 version_table.add_row([
 247                     version,
 248                     ", ".join(daemons)
 249                 ])
 250             output += version_table.get_string() + "\n"
 251
 252         return 0, "", output
 253
 254     def handle_osd_status(self, cmd):
 255         osd_table = PrettyTable(['id', 'host', 'used', 'avail', 'wr ops', 'wr data', 'rd ops', 'rd data'])
 256         osdmap = self.get("osd_map")
 257
 258         filter_osds = set()
 259         bucket_filter = None
 260         if 'bucket' in cmd:
 261             self.log.debug("Filtering to bucket '{0}'".format(cmd['bucket']))
 262             bucket_filter = cmd['bucket']
 263             crush = self.get("osd_map_crush")
 264             found = False
 265             for bucket in crush['buckets']:
 266                 if fnmatch.fnmatch(bucket['name'], bucket_filter):
 267                     found = True
 268                     filter_osds.update([i['id'] for i in bucket['items']])
 269
 270             if not found:
 271                 msg = "Bucket '{0}' not found".format(bucket_filter)
 272                 return errno.ENOENT, msg, ""
 273
 274         # Build dict of OSD ID to stats
 275         osd_stats = dict([(o['osd'], o) for o in self.get("osd_stats")['osd_stats']])
 276
 277         for osd in osdmap['osds']:
 278             osd_id = osd['osd']
 279             if bucket_filter and osd_id not in filter_osds:
 280                 continue
 281
 282             metadata = self.get_metadata('osd', "%s" % osd_id)
 283             stats = osd_stats[osd_id]
 284
 285             osd_table.add_row([osd_id, metadata['hostname'],
 286                                self.format_bytes(stats['kb_used'] * 1024, 5),
 287                                self.format_bytes(stats['kb_avail'] * 1024, 5),
 288                                self.format_dimless(self.get_rate("osd", osd_id.__str__(), "osd.op_w") +
 289                                self.get_rate("osd", osd_id.__str__(), "osd.op_rw"), 5),
 290                                self.format_bytes(self.get_rate("osd", osd_id.__str__(), "osd.op_in_bytes"), 5),
 291                                self.format_dimless(self.get_rate("osd", osd_id.__str__(), "osd.op_r"), 5),
 292                                self.format_bytes(self.get_rate("osd", osd_id.__str__(), "osd.op_out_bytes"), 5),
 293                                ])
 294
 295         return 0, "", osd_table.get_string()
 296
 297     def handle_command(self, cmd):
 298         self.log.error("handle_command")
 299
 300         if cmd['prefix'] == "fs status":
 301             return self.handle_fs_status(cmd)
 302         elif cmd['prefix'] == "osd status":
 303             return self.handle_osd_status(cmd)
 304         else:
 305             # mgr should respect our self.COMMANDS and not call us for
 306             # any prefix we don't advertise
 307             raise NotImplementedError(cmd['prefix'])