"""
+import os
+import errno
import sys
import SocketServer
import time
import Queue
import random
import signal
-import simplejson
import logging
from cStringIO import StringIO
from ganeti import utils
from ganeti import errors
from ganeti import ssconf
-from ganeti import logger
from ganeti import workerpool
from ganeti import rpc
+from ganeti import bootstrap
+from ganeti import serializer
CLIENT_REQUEST_WORKERS = 16
def __init__(self, address, rqhandler):
"""IOServer constructor
- Args:
- address: the address to bind this IOServer to
- rqhandler: RequestHandler type object
+ @param address: the address to bind this IOServer to
+ @param rqhandler: RequestHandler type object
"""
SocketServer.UnixStreamServer.__init__(self, address, rqhandler)
while True:
msg = self.read_message()
if msg is None:
- logging.info("client closed connection")
+ logging.debug("client closed connection")
break
- request = simplejson.loads(msg)
+ request = serializer.LoadJson(msg)
logging.debug("request: %s", request)
if not isinstance(request, dict):
logging.error("wrong request received: %s", msg)
try:
result = self._ops.handle_request(method, args)
success = True
+ except errors.GenericError, err:
+ success = False
+ result = (err.__class__.__name__, err.args)
except:
logging.error("Unexpected exception", exc_info=True)
err = sys.exc_info()
luxi.KEY_RESULT: result,
}
logging.debug("response: %s", response)
- self.send_message(simplejson.dumps(response))
+ self.send_message(serializer.DumpJson(response))
def read_message(self):
while not self._msgs:
# TODO: Parameter validation
if method == luxi.REQ_SUBMIT_JOB:
+ logging.info("Received new job")
ops = [opcodes.OpCode.LoadOpCode(state) for state in args]
return queue.SubmitJob(ops)
+ if method == luxi.REQ_SUBMIT_MANY_JOBS:
+ logging.info("Received multiple jobs")
+ jobs = []
+ for ops in args:
+ jobs.append([opcodes.OpCode.LoadOpCode(state) for state in ops])
+ return queue.SubmitManyJobs(jobs)
+
elif method == luxi.REQ_CANCEL_JOB:
job_id = args
+ logging.info("Received job cancel request for %s", job_id)
return queue.CancelJob(job_id)
elif method == luxi.REQ_ARCHIVE_JOB:
job_id = args
+ logging.info("Received job archive request for %s", job_id)
return queue.ArchiveJob(job_id)
+ elif method == luxi.REQ_AUTOARCHIVE_JOBS:
+ (age, timeout) = args
+ logging.info("Received job autoarchive request for age %s, timeout %s",
+ age, timeout)
+ return queue.AutoArchiveJobs(age, timeout)
+
elif method == luxi.REQ_WAIT_FOR_JOB_CHANGE:
(job_id, fields, prev_job_info, prev_log_serial, timeout) = args
+ logging.info("Received job poll request for %s", job_id)
return queue.WaitForJobChanges(job_id, fields, prev_job_info,
prev_log_serial, timeout)
elif method == luxi.REQ_QUERY_JOBS:
(job_ids, fields) = args
+ if isinstance(job_ids, (tuple, list)) and job_ids:
+ msg = ", ".join(job_ids)
+ else:
+ msg = str(job_ids)
+ logging.info("Received job query request for %s", msg)
return queue.QueryJobs(job_ids, fields)
elif method == luxi.REQ_QUERY_INSTANCES:
- (names, fields) = args
- op = opcodes.OpQueryInstances(names=names, output_fields=fields)
+ (names, fields, use_locking) = args
+ logging.info("Received instance query request for %s", names)
+ if use_locking:
+ raise errors.OpPrereqError("Sync queries are not allowed")
+ op = opcodes.OpQueryInstances(names=names, output_fields=fields,
+ use_locking=use_locking)
return self._Query(op)
elif method == luxi.REQ_QUERY_NODES:
- (names, fields) = args
- op = opcodes.OpQueryNodes(names=names, output_fields=fields)
+ (names, fields, use_locking) = args
+ logging.info("Received node query request for %s", names)
+ if use_locking:
+ raise errors.OpPrereqError("Sync queries are not allowed")
+ op = opcodes.OpQueryNodes(names=names, output_fields=fields,
+ use_locking=use_locking)
return self._Query(op)
elif method == luxi.REQ_QUERY_EXPORTS:
- nodes = args
- op = opcodes.OpQueryExports(nodes=nodes)
+ nodes, use_locking = args
+ if use_locking:
+ raise errors.OpPrereqError("Sync queries are not allowed")
+ logging.info("Received exports query request")
+ op = opcodes.OpQueryExports(nodes=nodes, use_locking=use_locking)
return self._Query(op)
elif method == luxi.REQ_QUERY_CONFIG_VALUES:
fields = args
+ logging.info("Received config values query request for %s", fields)
op = opcodes.OpQueryConfigValues(output_fields=fields)
return self._Query(op)
+ elif method == luxi.REQ_QUERY_CLUSTER_INFO:
+ logging.info("Received cluster info query request")
+ op = opcodes.OpQueryClusterInfo()
+ return self._Query(op)
+
+ elif method == luxi.REQ_QUEUE_SET_DRAIN_FLAG:
+ drain_flag = args
+ logging.info("Received queue drain flag change request to %s",
+ drain_flag)
+ return queue.SetDrainFlag(drain_flag)
+
else:
- raise ValueError("Invalid operation")
+ logging.info("Received invalid request '%s'", method)
+ raise ValueError("Invalid operation '%s'" % method)
def _DummyLog(self, *args):
pass
"""
proc = mcpu.Processor(self.server.context)
# TODO: Where should log messages go?
- return proc.ExecOpCode(op, self._DummyLog)
+ return proc.ExecOpCode(op, self._DummyLog, None)
class GanetiContext(object):
self.cfg.AddNode(node)
# If preseeding fails it'll not be added
- self.jobqueue.AddNode(node.name)
+ self.jobqueue.AddNode(node)
# Add the new node to the Ganeti Lock Manager
self.glm.add(locking.LEVEL_NODE, node.name)
"""
# Synchronize the queue again
- self.jobqueue.AddNode(node.name)
+ self.jobqueue.AddNode(node)
def RemoveNode(self, name):
"""Removes a node from the configuration and lock manager.
def ParseOptions():
"""Parse the command line options.
- Returns:
- (options, args) as from OptionParser.parse_args()
+ @return: (options, args) as from OptionParser.parse_args()
"""
parser = OptionParser(description="Ganeti master daemon",
parser.add_option("-d", "--debug", dest="debug",
help="Enable some debug messages",
default=False, action="store_true")
+ parser.add_option("--no-voting", dest="no_voting",
+ help="Do not check that the nodes agree on this node"
+ " being the master and start the daemon unconditionally",
+ default=False, action="store_true")
options, args = parser.parse_args()
return options, args
future we could collect the current node list from our (possibly
obsolete) known nodes.
+ In order to account for cold-start of all nodes, we retry for up to
+ a minute until we get a real answer as the top-voted one. If the
+ nodes are more out-of-sync, for now manual startup of the master
+ should be attempted.
+
+ Note that for a even number of nodes cluster, we need at least half
+ of the nodes (beside ourselves) to vote for us. This creates a
+ problem on two-node clusters, since in this case we require the
+ other node to be up too to confirm our status.
+
"""
myself = utils.HostInfo().name
#temp instantiation of a config writer, used only to get the node list
cfg = config.ConfigWriter()
node_list = cfg.GetNodeList()
del cfg
- try:
- node_list.remove(myself)
- except KeyError:
- pass
- if not node_list:
- # either single node cluster, or a misconfiguration, but I won't
- # break any other node, so I can proceed
- return True
- results = rpc.call_master_info(node_list)
- if not isinstance(results, dict):
- # this should not happen (unless internal error in rpc)
- logging.critical("Can't complete rpc call, aborting master startup")
- return False
- positive = negative = 0
- other_masters = {}
- for node in results:
- if not isinstance(results[node], (tuple, list)) or len(results[node]) < 3:
- logging.warning("Can't contact node %s", node)
+ retries = 6
+ while retries > 0:
+ votes = bootstrap.GatherMasterVotes(node_list)
+ if not votes:
+ # empty node list, this is a one node cluster
+ return True
+ if votes[0][0] is None:
+ retries -= 1
+ time.sleep(10)
continue
- master_node = results[node][2]
- if master_node == myself:
- positive += 1
- else:
- negative += 1
- if not master_node in other_masters:
- other_masters[master_node] = 0
- other_masters[master_node] += 1
- if positive <= negative:
- # bad!
- logging.critical("It seems we are not the master (%d votes for,"
- " %d votes against)", positive, negative)
- if len(other_masters) > 1:
- logging.critical("The other nodes do not agree on a single master")
- elif other_masters:
- # TODO: resync my files from the master
- logging.critical("It seems the real master is %s",
- other_masters.keys()[0])
- else:
- logging.critical("Can't contact any node for data, aborting startup")
+ break
+ if retries == 0:
+ logging.critical("Cluster inconsistent, most of the nodes didn't answer"
+ " after multiple retries. Aborting startup")
return False
- return True
+ # here a real node is at the top of the list
+ all_votes = sum(item[1] for item in votes)
+ top_node, top_votes = votes[0]
+ result = False
+ if top_node != myself:
+ logging.critical("It seems we are not the master (top-voted node"
+ " is %s with %d out of %d votes)", top_node, top_votes,
+ all_votes)
+ elif top_votes < all_votes - top_votes:
+ logging.critical("It seems we are not the master (%d votes for,"
+ " %d votes against)", top_votes, all_votes - top_votes)
+ else:
+ result = True
+
+ return result
def main():
utils.debug = options.debug
utils.no_fork = True
- ssconf.CheckMaster(options.debug)
+ if options.fork:
+ utils.CloseFDs()
+
+ rpc.Init()
+ try:
+ ssconf.CheckMaster(options.debug)
+
+ # we believe we are the master, let's ask the other nodes...
+ if options.no_voting:
+ sys.stdout.write("The 'no voting' option has been selected.\n")
+ sys.stdout.write("This is dangerous, please confirm by"
+ " typing uppercase 'yes': ")
+ sys.stdout.flush()
+ confirmation = sys.stdin.readline().strip()
+ if confirmation != "YES":
+ print "Aborting."
+ return
+ else:
+ if not CheckAgreement():
+ return
+
+ dirs = [(constants.RUN_GANETI_DIR, constants.RUN_DIRS_MODE),
+ (constants.SOCKET_DIR, constants.SOCKET_DIR_MODE),
+ ]
+ utils.EnsureDirs(dirs)
- # we believe we are the master, let's ask the other nodes...
- if not CheckAgreement():
- return
+ # This is safe to do as the pid file guarantees against
+ # concurrent execution.
+ utils.RemoveFile(constants.MASTER_SOCKET)
- master = IOServer(constants.MASTER_SOCKET, ClientRqHandler)
+ master = IOServer(constants.MASTER_SOCKET, ClientRqHandler)
+ finally:
+ rpc.Shutdown()
# become a daemon
if options.fork:
- utils.Daemonize(logfile=constants.LOG_MASTERDAEMON,
- noclose_fds=[master.fileno()])
+ utils.Daemonize(logfile=constants.LOG_MASTERDAEMON)
utils.WritePidFile(constants.MASTERD_PID)
+ try:
+ utils.SetupLogging(constants.LOG_MASTERDAEMON, debug=options.debug,
+ stderr_logging=not options.fork, multithreaded=True)
- logger.SetupLogging(constants.LOG_MASTERDAEMON, debug=options.debug,
- stderr_logging=not options.fork)
-
- logging.info("ganeti master daemon startup")
+ logging.info("Ganeti master daemon startup")
- # activate ip
- master_node = ssconf.SimpleStore().GetMasterNode()
- if not rpc.call_node_start_master(master_node, False):
- logging.error("Can't activate master IP address")
+ rpc.Init()
+ try:
+ # activate ip
+ master_node = ssconf.SimpleConfigReader().GetMasterNode()
+ if not rpc.RpcRunner.call_node_start_master(master_node, False):
+ logging.error("Can't activate master IP address")
- master.setup_queue()
- try:
- master.serve_forever()
+ master.setup_queue()
+ try:
+ master.serve_forever()
+ finally:
+ master.server_cleanup()
+ finally:
+ rpc.Shutdown()
finally:
- master.server_cleanup()
utils.RemovePidFile(constants.MASTERD_PID)
+ utils.RemoveFile(constants.MASTER_SOCKET)
if __name__ == "__main__":
projects / ganeti-local / blobdiff