4 # Copyright (C) 2006, 2007, 2008, 2010, 2011, 2012 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """Functions to bootstrap a new cluster.
33 from ganeti import rpc
34 from ganeti import ssh
35 from ganeti import utils
36 from ganeti import errors
37 from ganeti import config
38 from ganeti import constants
39 from ganeti import objects
40 from ganeti import ssconf
41 from ganeti import serializer
42 from ganeti import hypervisor
43 from ganeti.storage import drbd
44 from ganeti import netutils
45 from ganeti import luxi
46 from ganeti import jstore
47 from ganeti import pathutils
50 # ec_id for InitConfig's temporary reservation manager
51 _INITCONF_ECID = "initconfig-ecid"
53 #: After how many seconds daemon must be responsive
54 _DAEMON_READY_TIMEOUT = 10.0
58 """Setup the SSH configuration for the cluster.
60 This generates a dsa keypair for root, adds the pub key to the
61 permitted hosts and adds the hostkey to its own known hosts.
64 priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.SSH_LOGIN_USER)
66 for name in priv_key, pub_key:
67 if os.path.exists(name):
68 utils.CreateBackup(name)
69 utils.RemoveFile(name)
71 result = utils.RunCmd(["ssh-keygen", "-t", "dsa",
75 raise errors.OpExecError("Could not generate ssh keypair, error %s" %
78 utils.AddAuthorizedKey(auth_keys, utils.ReadFile(pub_key))
81 def GenerateHmacKey(file_name):
82 """Writes a new HMAC key.
85 @param file_name: Path to output file
88 utils.WriteFile(file_name, data="%s\n" % utils.GenerateSecret(), mode=0400,
92 def GenerateClusterCrypto(new_cluster_cert, new_rapi_cert, new_spice_cert,
93 new_confd_hmac_key, new_cds,
94 rapi_cert_pem=None, spice_cert_pem=None,
95 spice_cacert_pem=None, cds=None,
96 nodecert_file=pathutils.NODED_CERT_FILE,
97 rapicert_file=pathutils.RAPI_CERT_FILE,
98 spicecert_file=pathutils.SPICE_CERT_FILE,
99 spicecacert_file=pathutils.SPICE_CACERT_FILE,
100 hmackey_file=pathutils.CONFD_HMAC_KEY,
101 cds_file=pathutils.CLUSTER_DOMAIN_SECRET_FILE):
102 """Updates the cluster certificates, keys and secrets.
104 @type new_cluster_cert: bool
105 @param new_cluster_cert: Whether to generate a new cluster certificate
106 @type new_rapi_cert: bool
107 @param new_rapi_cert: Whether to generate a new RAPI certificate
108 @type new_spice_cert: bool
109 @param new_spice_cert: Whether to generate a new SPICE certificate
110 @type new_confd_hmac_key: bool
111 @param new_confd_hmac_key: Whether to generate a new HMAC key
113 @param new_cds: Whether to generate a new cluster domain secret
114 @type rapi_cert_pem: string
115 @param rapi_cert_pem: New RAPI certificate in PEM format
116 @type spice_cert_pem: string
117 @param spice_cert_pem: New SPICE certificate in PEM format
118 @type spice_cacert_pem: string
119 @param spice_cacert_pem: Certificate of the CA that signed the SPICE
120 certificate, in PEM format
122 @param cds: New cluster domain secret
123 @type nodecert_file: string
124 @param nodecert_file: optional override of the node cert file path
125 @type rapicert_file: string
126 @param rapicert_file: optional override of the rapi cert file path
127 @type spicecert_file: string
128 @param spicecert_file: optional override of the spice cert file path
129 @type spicecacert_file: string
130 @param spicecacert_file: optional override of the spice CA cert file path
131 @type hmackey_file: string
132 @param hmackey_file: optional override of the hmac key file path
135 # noded SSL certificate
136 cluster_cert_exists = os.path.exists(nodecert_file)
137 if new_cluster_cert or not cluster_cert_exists:
138 if cluster_cert_exists:
139 utils.CreateBackup(nodecert_file)
141 logging.debug("Generating new cluster certificate at %s", nodecert_file)
142 utils.GenerateSelfSignedSslCert(nodecert_file)
145 if new_confd_hmac_key or not os.path.exists(hmackey_file):
146 logging.debug("Writing new confd HMAC key to %s", hmackey_file)
147 GenerateHmacKey(hmackey_file)
150 rapi_cert_exists = os.path.exists(rapicert_file)
153 # Assume rapi_pem contains a valid PEM-formatted certificate and key
154 logging.debug("Writing RAPI certificate at %s", rapicert_file)
155 utils.WriteFile(rapicert_file, data=rapi_cert_pem, backup=True)
157 elif new_rapi_cert or not rapi_cert_exists:
159 utils.CreateBackup(rapicert_file)
161 logging.debug("Generating new RAPI certificate at %s", rapicert_file)
162 utils.GenerateSelfSignedSslCert(rapicert_file)
165 spice_cert_exists = os.path.exists(spicecert_file)
166 spice_cacert_exists = os.path.exists(spicecacert_file)
168 # spice_cert_pem implies also spice_cacert_pem
169 logging.debug("Writing SPICE certificate at %s", spicecert_file)
170 utils.WriteFile(spicecert_file, data=spice_cert_pem, backup=True)
171 logging.debug("Writing SPICE CA certificate at %s", spicecacert_file)
172 utils.WriteFile(spicecacert_file, data=spice_cacert_pem, backup=True)
173 elif new_spice_cert or not spice_cert_exists:
174 if spice_cert_exists:
175 utils.CreateBackup(spicecert_file)
176 if spice_cacert_exists:
177 utils.CreateBackup(spicecacert_file)
179 logging.debug("Generating new self-signed SPICE certificate at %s",
181 (_, cert_pem) = utils.GenerateSelfSignedSslCert(spicecert_file)
183 # Self-signed certificate -> the public certificate is also the CA public
185 logging.debug("Writing the public certificate to %s",
187 utils.io.WriteFile(spicecacert_file, mode=0400, data=cert_pem)
189 # Cluster domain secret
191 logging.debug("Writing cluster domain secret to %s", cds_file)
192 utils.WriteFile(cds_file, data=cds, backup=True)
194 elif new_cds or not os.path.exists(cds_file):
195 logging.debug("Generating new cluster domain secret at %s", cds_file)
196 GenerateHmacKey(cds_file)
199 def _InitGanetiServerSetup(master_name):
200 """Setup the necessary configuration for the initial node daemon.
202 This creates the nodepass file containing the shared password for
203 the cluster, generates the SSL certificate and starts the node daemon.
205 @type master_name: str
206 @param master_name: Name of the master node
209 # Generate cluster secrets
210 GenerateClusterCrypto(True, False, False, False, False)
212 result = utils.RunCmd([pathutils.DAEMON_UTIL, "start", constants.NODED])
214 raise errors.OpExecError("Could not start the node daemon, command %s"
215 " had exitcode %s and error %s" %
216 (result.cmd, result.exit_code, result.output))
218 _WaitForNodeDaemon(master_name)
221 def _WaitForNodeDaemon(node_name):
222 """Wait for node daemon to become responsive.
225 def _CheckNodeDaemon():
226 # Pylint bug <http://www.logilab.org/ticket/35642>
227 # pylint: disable=E1101
228 result = rpc.BootstrapRunner().call_version([node_name])[node_name]
230 raise utils.RetryAgain()
233 utils.Retry(_CheckNodeDaemon, 1.0, _DAEMON_READY_TIMEOUT)
234 except utils.RetryTimeout:
235 raise errors.OpExecError("Node daemon on %s didn't answer queries within"
236 " %s seconds" % (node_name, _DAEMON_READY_TIMEOUT))
239 def _WaitForMasterDaemon():
240 """Wait for master daemon to become responsive.
243 def _CheckMasterDaemon():
246 (cluster_name, ) = cl.QueryConfigValues(["cluster_name"])
248 raise utils.RetryAgain()
250 logging.debug("Received cluster name %s from master", cluster_name)
253 utils.Retry(_CheckMasterDaemon, 1.0, _DAEMON_READY_TIMEOUT)
254 except utils.RetryTimeout:
255 raise errors.OpExecError("Master daemon didn't answer queries within"
256 " %s seconds" % _DAEMON_READY_TIMEOUT)
259 def _WaitForSshDaemon(hostname, port, family):
260 """Wait for SSH daemon to become responsive.
263 hostip = netutils.GetHostname(name=hostname, family=family).ip
265 def _CheckSshDaemon():
266 if netutils.TcpPing(hostip, port, timeout=1.0, live_port_needed=True):
267 logging.debug("SSH daemon on %s:%s (IP address %s) has become"
268 " responsive", hostname, port, hostip)
270 raise utils.RetryAgain()
273 utils.Retry(_CheckSshDaemon, 1.0, _DAEMON_READY_TIMEOUT)
274 except utils.RetryTimeout:
275 raise errors.OpExecError("SSH daemon on %s:%s (IP address %s) didn't"
276 " become responsive within %s seconds" %
277 (hostname, port, hostip, _DAEMON_READY_TIMEOUT))
280 def RunNodeSetupCmd(cluster_name, node, basecmd, debug, verbose,
281 use_cluster_key, ask_key, strict_host_check, data):
282 """Runs a command to configure something on a remote machine.
284 @type cluster_name: string
285 @param cluster_name: Cluster name
287 @param node: Node name
288 @type basecmd: string
289 @param basecmd: Base command (path on the remote machine)
291 @param debug: Enable debug output
293 @param verbose: Enable verbose output
294 @type use_cluster_key: bool
295 @param use_cluster_key: See L{ssh.SshRunner.BuildCmd}
297 @param ask_key: See L{ssh.SshRunner.BuildCmd}
298 @type strict_host_check: bool
299 @param strict_host_check: See L{ssh.SshRunner.BuildCmd}
300 @param data: JSON-serializable input data for script (passed to stdin)
305 # Pass --debug/--verbose to the external script if set on our invocation
307 cmd.append("--debug")
310 cmd.append("--verbose")
312 family = ssconf.SimpleStore().GetPrimaryIPFamily()
313 srun = ssh.SshRunner(cluster_name,
314 ipv6=(family == netutils.IP6Address.family))
315 scmd = srun.BuildCmd(node, constants.SSH_LOGIN_USER,
316 utils.ShellQuoteArgs(cmd),
317 batch=False, ask_key=ask_key, quiet=False,
318 strict_host_check=strict_host_check,
319 use_cluster_key=use_cluster_key)
321 tempfh = tempfile.TemporaryFile()
323 tempfh.write(serializer.DumpJson(data))
326 result = utils.RunCmd(scmd, interactive=True, input_fd=tempfh)
331 raise errors.OpExecError("Command '%s' failed: %s" %
332 (result.cmd, result.fail_reason))
334 _WaitForSshDaemon(node, netutils.GetDaemonPort(constants.SSH), family)
337 def _PrepareFileStorage(enabled_disk_templates, file_storage_dir):
338 """Checks if file storage is enabled and inits the dir.
341 if utils.storage.IsFileStorageEnabled(enabled_disk_templates):
342 file_storage_dir = _InitFileStorageDir(file_storage_dir)
344 file_storage_dir = ""
345 return file_storage_dir
348 def _InitFileStorageDir(file_storage_dir):
349 """Initialize if needed the file storage.
351 @param file_storage_dir: the user-supplied value
352 @return: either empty string (if file storage was disabled at build
353 time) or the normalized path to the storage directory
356 file_storage_dir = os.path.normpath(file_storage_dir)
358 if not os.path.isabs(file_storage_dir):
359 raise errors.OpPrereqError("File storage directory '%s' is not an absolute"
360 " path" % file_storage_dir, errors.ECODE_INVAL)
362 if not os.path.exists(file_storage_dir):
364 os.makedirs(file_storage_dir, 0750)
366 raise errors.OpPrereqError("Cannot create file storage directory"
367 " '%s': %s" % (file_storage_dir, err),
368 errors.ECODE_ENVIRON)
370 if not os.path.isdir(file_storage_dir):
371 raise errors.OpPrereqError("The file storage directory '%s' is not"
372 " a directory." % file_storage_dir,
373 errors.ECODE_ENVIRON)
375 # FIXME: check here if the file_storage_dir is in the set of allowed dirs
376 return file_storage_dir
379 def _InitCheckEnabledDiskTemplates(enabled_disk_templates):
380 """Checks the sanity of the enabled disk templates.
383 if not enabled_disk_templates:
384 raise errors.OpPrereqError("Enabled disk templates list must contain at"
385 " least one member", errors.ECODE_INVAL)
386 invalid_disk_templates = \
387 set(enabled_disk_templates) - constants.DISK_TEMPLATES
388 if invalid_disk_templates:
389 raise errors.OpPrereqError("Enabled disk templates list contains invalid"
390 " entries: %s" % invalid_disk_templates,
394 def InitCluster(cluster_name, mac_prefix, # pylint: disable=R0913, R0914
395 master_netmask, master_netdev, file_storage_dir,
396 shared_file_storage_dir, candidate_pool_size, secondary_ip=None,
397 vg_name=None, beparams=None, nicparams=None, ndparams=None,
398 hvparams=None, diskparams=None, enabled_hypervisors=None,
399 modify_etc_hosts=True, modify_ssh_setup=True,
400 maintain_node_health=False, drbd_helper=None, uid_pool=None,
401 default_iallocator=None, primary_ip_version=None, ipolicy=None,
402 prealloc_wipe_disks=False, use_external_mip_script=False,
403 hv_state=None, disk_state=None, enabled_disk_templates=None):
404 """Initialise the cluster.
406 @type candidate_pool_size: int
407 @param candidate_pool_size: master candidate pool size
408 @type enabled_disk_templates: list of string
409 @param enabled_disk_templates: list of disk_templates to be used in this
413 # TODO: complete the docstring
414 if config.ConfigWriter.IsCluster():
415 raise errors.OpPrereqError("Cluster is already initialised",
418 if not enabled_hypervisors:
419 raise errors.OpPrereqError("Enabled hypervisors list must contain at"
420 " least one member", errors.ECODE_INVAL)
421 invalid_hvs = set(enabled_hypervisors) - constants.HYPER_TYPES
423 raise errors.OpPrereqError("Enabled hypervisors contains invalid"
424 " entries: %s" % invalid_hvs,
427 _InitCheckEnabledDiskTemplates(enabled_disk_templates)
430 ipcls = netutils.IPAddress.GetClassFromIpVersion(primary_ip_version)
431 except errors.ProgrammerError:
432 raise errors.OpPrereqError("Invalid primary ip version: %d." %
433 primary_ip_version, errors.ECODE_INVAL)
435 hostname = netutils.GetHostname(family=ipcls.family)
436 if not ipcls.IsValid(hostname.ip):
437 raise errors.OpPrereqError("This host's IP (%s) is not a valid IPv%d"
438 " address." % (hostname.ip, primary_ip_version),
441 if ipcls.IsLoopback(hostname.ip):
442 raise errors.OpPrereqError("This host's IP (%s) resolves to a loopback"
443 " address. Please fix DNS or %s." %
444 (hostname.ip, pathutils.ETC_HOSTS),
445 errors.ECODE_ENVIRON)
447 if not ipcls.Own(hostname.ip):
448 raise errors.OpPrereqError("Inconsistency: this host's name resolves"
449 " to %s,\nbut this ip address does not"
450 " belong to this host" %
451 hostname.ip, errors.ECODE_ENVIRON)
453 clustername = netutils.GetHostname(name=cluster_name, family=ipcls.family)
455 if netutils.TcpPing(clustername.ip, constants.DEFAULT_NODED_PORT, timeout=5):
456 raise errors.OpPrereqError("Cluster IP already active",
457 errors.ECODE_NOTUNIQUE)
460 if primary_ip_version == constants.IP6_VERSION:
461 raise errors.OpPrereqError("When using a IPv6 primary address, a valid"
462 " IPv4 address must be given as secondary",
464 secondary_ip = hostname.ip
466 if not netutils.IP4Address.IsValid(secondary_ip):
467 raise errors.OpPrereqError("Secondary IP address (%s) has to be a valid"
468 " IPv4 address." % secondary_ip,
471 if not netutils.IP4Address.Own(secondary_ip):
472 raise errors.OpPrereqError("You gave %s as secondary IP,"
473 " but it does not belong to this host." %
474 secondary_ip, errors.ECODE_ENVIRON)
476 if master_netmask is not None:
477 if not ipcls.ValidateNetmask(master_netmask):
478 raise errors.OpPrereqError("CIDR netmask (%s) not valid for IPv%s " %
479 (master_netmask, primary_ip_version),
482 master_netmask = ipcls.iplen
485 # Check if volume group is valid
486 vgstatus = utils.CheckVolumeGroupSize(utils.ListVolumeGroups(), vg_name,
487 constants.MIN_VG_SIZE)
489 raise errors.OpPrereqError("Error: %s" % vgstatus, errors.ECODE_INVAL)
491 if drbd_helper is not None:
493 curr_helper = drbd.DRBD8.GetUsermodeHelper()
494 except errors.BlockDeviceError, err:
495 raise errors.OpPrereqError("Error while checking drbd helper"
496 " (specify --no-drbd-storage if you are not"
497 " using drbd): %s" % str(err),
498 errors.ECODE_ENVIRON)
499 if drbd_helper != curr_helper:
500 raise errors.OpPrereqError("Error: requiring %s as drbd helper but %s"
501 " is the current helper" % (drbd_helper,
505 logging.debug("Stopping daemons (if any are running)")
506 result = utils.RunCmd([pathutils.DAEMON_UTIL, "stop-all"])
508 raise errors.OpExecError("Could not stop daemons, command %s"
509 " had exitcode %s and error '%s'" %
510 (result.cmd, result.exit_code, result.output))
512 file_storage_dir = _PrepareFileStorage(enabled_disk_templates,
515 if constants.ENABLE_SHARED_FILE_STORAGE:
516 shared_file_storage_dir = _InitFileStorageDir(shared_file_storage_dir)
518 shared_file_storage_dir = ""
520 if not re.match("^[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}$", mac_prefix):
521 raise errors.OpPrereqError("Invalid mac prefix given '%s'" % mac_prefix,
524 result = utils.RunCmd(["ip", "link", "show", "dev", master_netdev])
526 raise errors.OpPrereqError("Invalid master netdev given (%s): '%s'" %
528 result.output.strip()), errors.ECODE_INVAL)
530 dirs = [(pathutils.RUN_DIR, constants.RUN_DIRS_MODE)]
531 utils.EnsureDirs(dirs)
533 objects.UpgradeBeParams(beparams)
534 utils.ForceDictType(beparams, constants.BES_PARAMETER_TYPES)
535 utils.ForceDictType(nicparams, constants.NICS_PARAMETER_TYPES)
537 objects.NIC.CheckParameterSyntax(nicparams)
539 full_ipolicy = objects.FillIPolicy(constants.IPOLICY_DEFAULTS, ipolicy)
541 if ndparams is not None:
542 utils.ForceDictType(ndparams, constants.NDS_PARAMETER_TYPES)
544 ndparams = dict(constants.NDC_DEFAULTS)
546 # This is ugly, as we modify the dict itself
547 # FIXME: Make utils.ForceDictType pure functional or write a wrapper
550 for hvname, hvs_data in hv_state.items():
551 utils.ForceDictType(hvs_data, constants.HVSTS_PARAMETER_TYPES)
552 hv_state[hvname] = objects.Cluster.SimpleFillHvState(hvs_data)
554 hv_state = dict((hvname, constants.HVST_DEFAULTS)
555 for hvname in enabled_hypervisors)
557 # FIXME: disk_state has no default values yet
559 for storage, ds_data in disk_state.items():
560 if storage not in constants.DS_VALID_TYPES:
561 raise errors.OpPrereqError("Invalid storage type in disk state: %s" %
562 storage, errors.ECODE_INVAL)
563 for ds_name, state in ds_data.items():
564 utils.ForceDictType(state, constants.DSS_PARAMETER_TYPES)
565 ds_data[ds_name] = objects.Cluster.SimpleFillDiskState(state)
567 # hvparams is a mapping of hypervisor->hvparams dict
568 for hv_name, hv_params in hvparams.iteritems():
569 utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
570 hv_class = hypervisor.GetHypervisor(hv_name)
571 hv_class.CheckParameterSyntax(hv_params)
573 # diskparams is a mapping of disk-template->diskparams dict
574 for template, dt_params in diskparams.items():
575 param_keys = set(dt_params.keys())
576 default_param_keys = set(constants.DISK_DT_DEFAULTS[template].keys())
577 if not (param_keys <= default_param_keys):
578 unknown_params = param_keys - default_param_keys
579 raise errors.OpPrereqError("Invalid parameters for disk template %s:"
581 utils.CommaJoin(unknown_params)),
583 utils.ForceDictType(dt_params, constants.DISK_DT_TYPES)
584 if template == constants.DT_DRBD8 and vg_name is not None:
585 # The default METAVG value is equal to the VG name set at init time,
587 dt_params[constants.DRBD_DEFAULT_METAVG] = vg_name
590 utils.VerifyDictOptions(diskparams, constants.DISK_DT_DEFAULTS)
591 except errors.OpPrereqError, err:
592 raise errors.OpPrereqError("While verify diskparam options: %s" % err,
595 # set up ssh config and /etc/hosts
596 sshline = utils.ReadFile(pathutils.SSH_HOST_RSA_PUB)
597 sshkey = sshline.split(" ")[1]
600 utils.AddHostToEtcHosts(hostname.name, hostname.ip)
605 if default_iallocator is not None:
606 alloc_script = utils.FindFile(default_iallocator,
607 constants.IALLOCATOR_SEARCH_PATH,
609 if alloc_script is None:
610 raise errors.OpPrereqError("Invalid default iallocator script '%s'"
611 " specified" % default_iallocator,
613 elif constants.HTOOLS:
614 # htools was enabled at build-time, we default to it
615 if utils.FindFile(constants.IALLOC_HAIL,
616 constants.IALLOCATOR_SEARCH_PATH,
618 default_iallocator = constants.IALLOC_HAIL
622 # init of cluster config file
623 cluster_config = objects.Cluster(
625 rsahostkeypub=sshkey,
626 highest_used_port=(constants.FIRST_DRBD_PORT - 1),
627 mac_prefix=mac_prefix,
628 volume_group_name=vg_name,
629 tcpudp_port_pool=set(),
630 master_ip=clustername.ip,
631 master_netmask=master_netmask,
632 master_netdev=master_netdev,
633 cluster_name=clustername.name,
634 file_storage_dir=file_storage_dir,
635 shared_file_storage_dir=shared_file_storage_dir,
636 enabled_hypervisors=enabled_hypervisors,
637 beparams={constants.PP_DEFAULT: beparams},
638 nicparams={constants.PP_DEFAULT: nicparams},
641 diskparams=diskparams,
642 candidate_pool_size=candidate_pool_size,
643 modify_etc_hosts=modify_etc_hosts,
644 modify_ssh_setup=modify_ssh_setup,
648 maintain_node_health=maintain_node_health,
649 drbd_usermode_helper=drbd_helper,
650 default_iallocator=default_iallocator,
651 primary_ip_family=ipcls.family,
652 prealloc_wipe_disks=prealloc_wipe_disks,
653 use_external_mip_script=use_external_mip_script,
654 ipolicy=full_ipolicy,
655 hv_state_static=hv_state,
656 disk_state_static=disk_state,
657 enabled_disk_templates=enabled_disk_templates,
659 master_node_config = objects.Node(name=hostname.name,
660 primary_ip=hostname.ip,
661 secondary_ip=secondary_ip,
663 master_candidate=True,
664 offline=False, drained=False,
665 ctime=now, mtime=now,
667 InitConfig(constants.CONFIG_VERSION, cluster_config, master_node_config)
668 cfg = config.ConfigWriter(offline=True)
669 ssh.WriteKnownHostsFile(cfg, pathutils.SSH_KNOWN_HOSTS_FILE)
670 cfg.Update(cfg.GetClusterInfo(), logging.error)
671 ssconf.WriteSsconfFiles(cfg.GetSsconfValues())
673 # set up the inter-node password and certificate
674 _InitGanetiServerSetup(hostname.name)
676 logging.debug("Starting daemons")
677 result = utils.RunCmd([pathutils.DAEMON_UTIL, "start-all"])
679 raise errors.OpExecError("Could not start daemons, command %s"
680 " had exitcode %s and error %s" %
681 (result.cmd, result.exit_code, result.output))
683 _WaitForMasterDaemon()
686 def InitConfig(version, cluster_config, master_node_config,
687 cfg_file=pathutils.CLUSTER_CONF_FILE):
688 """Create the initial cluster configuration.
690 It will contain the current node, which will also be the master
691 node, and no instances.
694 @param version: configuration version
695 @type cluster_config: L{objects.Cluster}
696 @param cluster_config: cluster configuration
697 @type master_node_config: L{objects.Node}
698 @param master_node_config: master node configuration
699 @type cfg_file: string
700 @param cfg_file: configuration file path
703 uuid_generator = config.TemporaryReservationManager()
704 cluster_config.uuid = uuid_generator.Generate([], utils.NewUUID,
706 master_node_config.uuid = uuid_generator.Generate([], utils.NewUUID,
708 cluster_config.master_node = master_node_config.uuid
710 master_node_config.uuid: master_node_config,
712 default_nodegroup = objects.NodeGroup(
713 uuid=uuid_generator.Generate([], utils.NewUUID, _INITCONF_ECID),
714 name=constants.INITIAL_NODE_GROUP_NAME,
715 members=[master_node_config.uuid],
719 default_nodegroup.uuid: default_nodegroup,
722 config_data = objects.ConfigData(version=version,
723 cluster=cluster_config,
724 nodegroups=nodegroups,
729 ctime=now, mtime=now)
730 utils.WriteFile(cfg_file,
731 data=serializer.Dump(config_data.ToDict()),
735 def FinalizeClusterDestroy(master_uuid):
736 """Execute the last steps of cluster destroy
738 This function shuts down all the daemons, completing the destroy
739 begun in cmdlib.LUDestroyOpcode.
742 cfg = config.ConfigWriter()
743 modify_ssh_setup = cfg.GetClusterInfo().modify_ssh_setup
744 runner = rpc.BootstrapRunner()
746 master_name = cfg.GetNodeName(master_uuid)
748 master_params = cfg.GetMasterNetworkParameters()
749 master_params.uuid = master_uuid
750 ems = cfg.GetUseExternalMipScript()
751 result = runner.call_node_deactivate_master_ip(master_name, master_params,
754 msg = result.fail_msg
756 logging.warning("Could not disable the master IP: %s", msg)
758 result = runner.call_node_stop_master(master_name)
759 msg = result.fail_msg
761 logging.warning("Could not disable the master role: %s", msg)
763 result = runner.call_node_leave_cluster(master_name, modify_ssh_setup)
764 msg = result.fail_msg
766 logging.warning("Could not shutdown the node daemon and cleanup"
767 " the node: %s", msg)
770 def SetupNodeDaemon(opts, cluster_name, node):
771 """Add a node to the cluster.
773 This function must be called before the actual opcode, and will ssh
774 to the remote node, copy the needed files, and start ganeti-noded,
775 allowing the master to do the rest via normal rpc calls.
777 @param cluster_name: the cluster name
778 @param node: the name of the new node
782 constants.NDS_CLUSTER_NAME: cluster_name,
783 constants.NDS_NODE_DAEMON_CERTIFICATE:
784 utils.ReadFile(pathutils.NODED_CERT_FILE),
785 constants.NDS_SSCONF: ssconf.SimpleStore().ReadAll(),
786 constants.NDS_START_NODE_DAEMON: True,
789 RunNodeSetupCmd(cluster_name, node, pathutils.NODE_DAEMON_SETUP,
790 opts.debug, opts.verbose,
791 True, opts.ssh_key_check, opts.ssh_key_check, data)
793 _WaitForNodeDaemon(node)
796 def MasterFailover(no_voting=False):
797 """Failover the master node.
799 This checks that we are not already the master, and will cause the
800 current master to cease being master, and the non-master to become
803 @type no_voting: boolean
804 @param no_voting: force the operation without remote nodes agreement
808 sstore = ssconf.SimpleStore()
810 old_master, new_master = ssconf.GetMasterAndMyself(sstore)
811 node_names = sstore.GetNodeList()
812 mc_list = sstore.GetMasterCandidates()
814 if old_master == new_master:
815 raise errors.OpPrereqError("This commands must be run on the node"
816 " where you want the new master to be."
817 " %s is already the master" %
818 old_master, errors.ECODE_INVAL)
820 if new_master not in mc_list:
821 mc_no_master = [name for name in mc_list if name != old_master]
822 raise errors.OpPrereqError("This node is not among the nodes marked"
823 " as master candidates. Only these nodes"
824 " can become masters. Current list of"
825 " master candidates is:\n"
826 "%s" % ("\n".join(mc_no_master)),
830 vote_list = GatherMasterVotes(node_names)
833 voted_master = vote_list[0][0]
834 if voted_master is None:
835 raise errors.OpPrereqError("Cluster is inconsistent, most nodes did"
836 " not respond.", errors.ECODE_ENVIRON)
837 elif voted_master != old_master:
838 raise errors.OpPrereqError("I have a wrong configuration, I believe"
839 " the master is %s but the other nodes"
840 " voted %s. Please resync the configuration"
842 (old_master, voted_master),
848 logging.info("Setting master to %s, old master: %s", new_master, old_master)
851 # instantiate a real config writer, as we now know we have the
853 cfg = config.ConfigWriter(accept_foreign=True)
855 old_master_node = cfg.GetNodeInfoByName(old_master)
856 if old_master_node is None:
857 raise errors.OpPrereqError("Could not find old master node '%s' in"
858 " cluster configuration." % old_master,
861 cluster_info = cfg.GetClusterInfo()
862 new_master_node = cfg.GetNodeInfoByName(new_master)
863 if new_master_node is None:
864 raise errors.OpPrereqError("Could not find new master node '%s' in"
865 " cluster configuration." % new_master,
868 cluster_info.master_node = new_master_node.uuid
869 # this will also regenerate the ssconf files, since we updated the
871 cfg.Update(cluster_info, logging.error)
872 except errors.ConfigurationError, err:
873 logging.error("Error while trying to set the new master: %s",
877 # if cfg.Update worked, then it means the old master daemon won't be
878 # able now to write its own config file (we rely on locking in both
879 # backend.UploadFile() and ConfigWriter._Write(); hence the next
880 # step is to kill the old master
882 logging.info("Stopping the master daemon on node %s", old_master)
884 runner = rpc.BootstrapRunner()
885 master_params = cfg.GetMasterNetworkParameters()
886 master_params.uuid = old_master_node.uuid
887 ems = cfg.GetUseExternalMipScript()
888 result = runner.call_node_deactivate_master_ip(old_master,
891 msg = result.fail_msg
893 logging.warning("Could not disable the master IP: %s", msg)
895 result = runner.call_node_stop_master(old_master)
896 msg = result.fail_msg
898 logging.error("Could not disable the master role on the old master"
899 " %s, please disable manually: %s", old_master, msg)
901 logging.info("Checking master IP non-reachability...")
903 master_ip = sstore.GetMasterIP()
906 # Here we have a phase where no master should be running
908 if netutils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
909 raise utils.RetryAgain()
912 utils.Retry(_check_ip, (1, 1.5, 5), total_timeout)
913 except utils.RetryTimeout:
914 logging.warning("The master IP is still reachable after %s seconds,"
915 " continuing but activating the master on the current"
916 " node will probably fail", total_timeout)
918 if jstore.CheckDrainFlag():
919 logging.info("Undraining job queue")
920 jstore.SetDrainFlag(False)
922 logging.info("Starting the master daemons on the new master")
924 result = rpc.BootstrapRunner().call_node_start_master_daemons(new_master,
926 msg = result.fail_msg
928 logging.error("Could not start the master role on the new master"
929 " %s, please check: %s", new_master, msg)
932 logging.info("Master failed over from %s to %s", old_master, new_master)
937 """Returns the current master node.
939 This is a separate function in bootstrap since it's needed by
940 gnt-cluster, and instead of importing directly ssconf, it's better
941 to abstract it in bootstrap, where we do use ssconf in other
945 sstore = ssconf.SimpleStore()
947 old_master, _ = ssconf.GetMasterAndMyself(sstore)
952 def GatherMasterVotes(node_names):
953 """Check the agreement on who is the master.
955 This function will return a list of (node, number of votes), ordered
956 by the number of votes. Errors will be denoted by the key 'None'.
958 Note that the sum of votes is the number of nodes this machine
959 knows, whereas the number of entries in the list could be different
960 (if some nodes vote for another master).
962 We remove ourselves from the list since we know that (bugs aside)
963 since we use the same source for configuration information for both
964 backend and boostrap, we'll always vote for ourselves.
966 @type node_names: list
967 @param node_names: the list of nodes to query for master info; the current
968 node will be removed if it is in the list
970 @return: list of (node, votes)
973 myself = netutils.Hostname.GetSysName()
975 node_names.remove(myself)
979 # no nodes left (eventually after removing myself)
981 results = rpc.BootstrapRunner().call_master_info(node_names)
982 if not isinstance(results, dict):
983 # this should not happen (unless internal error in rpc)
984 logging.critical("Can't complete rpc call, aborting master startup")
985 return [(None, len(node_names))]
987 for node_name in results:
988 nres = results[node_name]
993 logging.warning("Error contacting node %s: %s", node_name, msg)
995 # for now we accept both length 3, 4 and 5 (data[3] is primary ip version
996 # and data[4] is the master netmask)
997 elif not isinstance(data, (tuple, list)) or len(data) < 3:
998 logging.warning("Invalid data received from node %s: %s",
1002 if None not in votes:
1006 master_node = data[2]
1007 if master_node not in votes:
1008 votes[master_node] = 0
1009 votes[master_node] += 1
1011 vote_list = [v for v in votes.items()]
1012 # sort first on number of votes then on name, since we want None
1013 # sorted later if we have the half of the nodes not responding, and
1014 # half voting all for the same master
1015 vote_list.sort(key=lambda x: (x[1], x[0]), reverse=True)