findbadpcu.py

   1 #!/usr/bin/python
   2
   3 import os
   4 import sys
   5 import string
   6 import time
   7 import socket
   8
   9
  10 import signal
  11
  12 #old_handler = signal.getsignal(signal.SIGCHLD)
  13
  14 #def sig_handler(signum, stack):
  15 #       """ Handle SIGCHLD signal """
  16 #       global old_handler
  17 #       if signum == signal.SIGCHLD:
  18 #               try:
  19 #                       os.wait()
  20 #               except:
  21 #                       pass
  22 #       if old_handler != signal.SIG_DFL:
  23 #               old_handler(signum, stack)
  24 #
  25 #orig_sig_handler = signal.signal(signal.SIGCHLD, sig_handler)
  26
  27 from config import config
  28 from optparse import OptionParser
  29 parser = OptionParser()
  30 parser.set_defaults(filename=None,
  31                                         increment=False,
  32                                         pcuid=None,
  33                                         dbname="findbadpcus",
  34                                         cachenodes=False,
  35                                         refresh=False,
  36                                         )
  37 parser.add_option("-f", "--nodelist", dest="filename", metavar="FILE",
  38                                         help="Provide the input file for the node list")
  39 parser.add_option("", "--pcuid", dest="pcuid", metavar="id",
  40                                         help="Provide the id for a single pcu")
  41 parser.add_option("", "--cachenodes", action="store_true",
  42                                         help="Cache node lookup from PLC")
  43 parser.add_option("", "--dbname", dest="dbname", metavar="FILE",
  44                                         help="Specify the name of the database to which the information is saved")
  45 parser.add_option("", "--refresh", action="store_true", dest="refresh",
  46                                         help="Refresh the cached values")
  47 parser.add_option("-i", "--increment", action="store_true", dest="increment",
  48                                         help="Increment round number to force refresh or retry")
  49 config = config(parser)
  50 config.parse_args()
  51
  52 # QUERY all nodes.
  53 COMON_COTOPURL= "http://summer.cs.princeton.edu/status/tabulator.cgi?" + \
  54                                         "table=table_nodeview&" + \
  55                                     "dumpcols='name,resptime,sshstatus,uptime,lastcotop'&" + \
  56                                     "formatcsv"
  57                                     #"formatcsv&" + \
  58                                         #"select='lastcotop!=0'"
  59
  60 import threading
  61 plc_lock = threading.Lock()
  62 round = 1
  63 externalState = {'round': round, 'nodes': {'a': None}}
  64 errorState = {}
  65 count = 0
  66
  67 import reboot
  68 from reboot import pcu_name
  69
  70 import soltesz
  71 import plc
  72 import comon
  73 import threadpool
  74 import syncplcdb
  75
  76 def nmap_portstatus(status):
  77         ps = {}
  78         l_nmap = status.split()
  79         ports = l_nmap[4:]
  80
  81         continue_probe = False
  82         for port in ports:
  83                 results = port.split('/')
  84                 ps[results[0]] = results[1]
  85                 if results[1] == "open":
  86                         continue_probe = True
  87         return (ps, continue_probe)
  88
  89 def collectPingAndSSH(pcuname, cohash):
  90
  91         continue_probe = True
  92         errors = None
  93         values = {}
  94         ### GET PCU ######################
  95         try:
  96                 b_except = False
  97                 plc_lock.acquire()
  98
  99                 try:
 100                         l_pcu  = plc.GetPCUs({'pcu_id' : pcuname})
 101
 102                         if len(l_pcu) > 0:
 103                                 site_id = l_pcu[0]['site_id']
 104
 105                                 node_ids = l_pcu[0]['node_ids']
 106                                 l_node = plc.getNodes(node_ids, ['hostname', 'last_contact',
 107                                                                                                  'node_id', 'ports'])
 108                         if len(l_node) > 0:
 109                                 for node in l_node:
 110                                         values[node['hostname']] = node['ports'][0]
 111
 112                                 values['nodenames'] = [node['hostname'] for node in l_node]
 113                                 # NOTE: this is for a dry run later. It doesn't matter which node.
 114                                 values['node_id'] = l_node[0]['node_id']
 115
 116                         if len(l_pcu) > 0:
 117                                 values.update(l_pcu[0])
 118                         else:
 119                                 continue_probe = False
 120
 121                 except:
 122                         b_except = True
 123                         import traceback
 124                         traceback.print_exc()
 125
 126                         continue_probe = False
 127
 128                 plc_lock.release()
 129                 if b_except: return (None, None)
 130
 131                 if values['hostname'] is not None:
 132                         values['hostname'] = values['hostname'].strip()
 133
 134                 if values['ip'] is not None:
 135                         values['ip'] = values['ip'].strip()
 136
 137                 #### COMPLETE ENTRY   #######################
 138
 139                 values['complete_entry'] = []
 140                 #if values['protocol'] is None or values['protocol'] is "":
 141                 #       values['complete_entry'] += ["protocol"]
 142                 if values['model'] is None or values['model'] is "":
 143                         values['complete_entry'] += ["model"]
 144                         # Cannot continue due to this condition
 145                         continue_probe = False
 146
 147                 if values['password'] is None or values['password'] is "":
 148                         values['complete_entry'] += ["password"]
 149                         # Cannot continue due to this condition
 150                         continue_probe = False
 151
 152                 if len(values['complete_entry']) > 0:
 153                         continue_probe = False
 154
 155                 if values['hostname'] is None or values['hostname'] is "":
 156                         values['complete_entry'] += ["hostname"]
 157                 if values['ip'] is None or values['ip'] is "":
 158                         values['complete_entry'] += ["ip"]
 159
 160                 # If there are no nodes associated with this PCU, then we cannot continue.
 161                 if len(values['node_ids']) == 0:
 162                         continue_probe = False
 163                         values['complete_entry'] += ['NoNodeIds']
 164
 165                 #### DNS and IP MATCH #######################
 166                 if values['hostname'] is not None and values['hostname'] is not "" and \
 167                    values['ip'] is not None and values['ip'] is not "":
 168                         #print "Calling socket.gethostbyname(%s)" % values['hostname']
 169                         try:
 170                                 ipaddr = socket.gethostbyname(values['hostname'])
 171                                 if ipaddr == values['ip']:
 172                                         values['dnsmatch'] = "DNS-OK"
 173                                 else:
 174                                         values['dnsmatch'] = "DNS-MISMATCH"
 175                                         continue_probe = False
 176
 177                         except Exception, err:
 178                                 values['dnsmatch'] = "DNS-NOENTRY"
 179                                 values['hostname'] = values['ip']
 180                                 #print err
 181                 else:
 182                         if values['ip'] is not None and values['ip'] is not "":
 183                                 values['dnsmatch'] = "NOHOSTNAME"
 184                                 values['hostname'] = values['ip']
 185                         else:
 186                                 values['dnsmatch'] = "NO-DNS-OR-IP"
 187                                 values['hostname'] = "No_entry_in_DB"
 188                                 continue_probe = False
 189
 190                 #### RUN NMAP ###############################
 191                 if continue_probe:
 192                         nmap = soltesz.CMD()
 193                         (oval,eval) = nmap.run_noexcept("nmap -oG - -P0 -p22,23,80,443,5869,16992 %s | grep Host:" % pcu_name(values))
 194                         # NOTE: an empty / error value for oval, will still work.
 195                         (values['portstatus'], continue_probe) = nmap_portstatus(oval)
 196                 else:
 197                         values['portstatus'] = None
 198
 199
 200                 ######  DRY RUN  ############################
 201                 if 'node_ids' in values and len(values['node_ids']) > 0:
 202                         rb_ret = reboot.reboot_test(values['nodenames'][0], values, continue_probe, 1, True)
 203                 else:
 204                         rb_ret = "Not_Run" # No nodes to test"
 205
 206                 values['reboot'] = rb_ret
 207
 208                 ### GET PLC SITE ######################
 209                 b_except = False
 210                 plc_lock.acquire()
 211
 212                 try:
 213                         d_site = plc.getSites({'site_id': site_id},
 214                                                                 ['max_slices', 'slice_ids', 'node_ids', 'login_base'])
 215                 except:
 216                         b_except = True
 217                         import traceback
 218                         traceback.print_exc()
 219
 220                 plc_lock.release()
 221                 if b_except: return (None, None)
 222
 223                 if d_site and len(d_site) > 0:
 224                         max_slices = d_site[0]['max_slices']
 225                         num_slices = len(d_site[0]['slice_ids'])
 226                         num_nodes = len(d_site[0]['node_ids'])
 227                         loginbase = d_site[0]['login_base']
 228                         values['plcsite'] = {'num_nodes' : num_nodes,
 229                                                                 'max_slices' : max_slices,
 230                                                                 'num_slices' : num_slices,
 231                                                                 'login_base' : loginbase,
 232                                                                 'status'     : 'SUCCESS'}
 233                 else:
 234                         values['plcsite'] = {'status' : "GS_FAILED"}
 235         except:
 236                 print "____________________________________"
 237                 print values
 238                 errors = values
 239                 print "____________________________________"
 240                 import traceback
 241                 errors['traceback'] = traceback.format_exc()
 242                 print errors['traceback']
 243
 244         values['checked'] = time.time()
 245         return (pcuname, values, errors)
 246
 247 def recordPingAndSSH(request, result):
 248         global errorState
 249         global externalState
 250         global count
 251         (nodename, values, errors) = result
 252
 253         if values is not None:
 254                 global_round = externalState['round']
 255                 pcu_id = "id_%s" % nodename
 256                 externalState['nodes'][pcu_id]['values'] = values
 257                 externalState['nodes'][pcu_id]['round'] = global_round
 258
 259                 count += 1
 260                 print "%d %s %s" % (count, nodename, externalState['nodes'][pcu_id]['values'])
 261                 soltesz.dbDump(config.dbname, externalState)
 262
 263         if errors is not None:
 264                 pcu_id = "id_%s" % nodename
 265                 errorState[pcu_id] = errors
 266                 soltesz.dbDump("findbadpcu_errors", errorState)
 267
 268 # this will be called when an exception occurs within a thread
 269 def handle_exception(request, result):
 270         print "Exception occured in request %s" % request.requestID
 271         for i in result:
 272                 print "Result: %s" % i
 273
 274
 275 def checkAndRecordState(l_pcus, cohash):
 276         global externalState
 277         global count
 278         global_round = externalState['round']
 279
 280         tp = threadpool.ThreadPool(20)
 281
 282         # CREATE all the work requests
 283         for pcuname in l_pcus:
 284                 pcu_id = "id_%s" % pcuname
 285                 if pcuname not in externalState['nodes']:
 286                         #print type(externalState['nodes'])
 287
 288                         externalState['nodes'][pcu_id] = {'round': 0, 'values': []}
 289
 290                 node_round   = externalState['nodes'][pcu_id]['round']
 291                 if node_round < global_round:
 292                         # recreate node stats when refreshed
 293                         #print "%s" % nodename
 294                         req = threadpool.WorkRequest(collectPingAndSSH, [pcuname, cohash], {},
 295                                                                                  None, recordPingAndSSH, handle_exception)
 296                         tp.putRequest(req)
 297                 else:
 298                         # We just skip it, since it's "up to date"
 299                         count += 1
 300                         print "%d %s %s" % (count, pcu_id, externalState['nodes'][pcu_id]['values'])
 301                         pass
 302
 303         # WAIT while all the work requests are processed.
 304         while 1:
 305                 try:
 306                         time.sleep(1)
 307                         tp.poll()
 308                 except KeyboardInterrupt:
 309                         print "Interrupted!"
 310                         break
 311                 except threadpool.NoResultsPending:
 312                         print "All results collected."
 313                         break
 314
 315
 316
 317 def main():
 318         global externalState
 319
 320         externalState = soltesz.if_cached_else(1, config.dbname, lambda : externalState)
 321         cohash = {}
 322
 323         if config.increment:
 324                 # update global round number to force refreshes across all nodes
 325                 externalState['round'] += 1
 326
 327         if config.filename == None and config.pcuid == None:
 328                 print "Calling API GetPCUs() : refresh(%s)" % config.refresh
 329                 l_pcus = soltesz.if_cached_else_refresh(1,
 330                                                                 config.refresh, "pculist", lambda : plc.GetPCUs())
 331                 l_pcus  = [pcu['pcu_id'] for pcu in l_pcus]
 332         elif config.filename is not None:
 333                 l_pcus = config.getListFromFile(config.filename)
 334                 l_pcus = [int(pcu) for pcu in l_pcus]
 335         elif config.pcuid is not None:
 336                 l_pcus = [ config.pcuid ]
 337                 l_pcus = [int(pcu) for pcu in l_pcus]
 338
 339
 340         checkAndRecordState(l_pcus, cohash)
 341
 342         return 0
 343
 344 import logging
 345 logger = logging.getLogger("monitor")
 346 logger.setLevel(logging.DEBUG)
 347 fh = logging.FileHandler("monitor.log", mode = 'a')
 348 fh.setLevel(logging.DEBUG)
 349 formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
 350 fh.setFormatter(formatter)
 351 logger.addHandler(fh)
 352
 353
 354 if __name__ == '__main__':
 355         try:
 356                 # NOTE: evidently, there is a bizarre interaction between iLO and ssh
 357                 # when LANG is set... Do not know why.  Unsetting LANG, fixes the problem.
 358                 if 'LANG' in os.environ:
 359                         del os.environ['LANG']
 360                 main()
 361                 time.sleep(1)
 362         except Exception, err:
 363                 print "Exception: %s" % err
 364                 print "Saving data... exitting."
 365                 soltesz.dbDump(config.dbname, externalState)
 366                 sys.exit(0)