4 # Copyright (C) 2006, 2007 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 """Module implementing the master-side code."""
24 # pylint: disable-msg=W0613,W0201
35 from ganeti import rpc
36 from ganeti import ssh
37 from ganeti import logger
38 from ganeti import utils
39 from ganeti import errors
40 from ganeti import hypervisor
41 from ganeti import config
42 from ganeti import constants
43 from ganeti import objects
44 from ganeti import opcodes
45 from ganeti import ssconf
47 class LogicalUnit(object):
48 """Logical Unit base class.
50 Subclasses must follow these rules:
51 - implement CheckPrereq which also fills in the opcode instance
52 with all the fields (even if as None)
54 - implement BuildHooksEnv
55 - redefine HPATH and HTYPE
56 - optionally redefine their run requirements (REQ_CLUSTER,
57 REQ_MASTER); note that all commands require root permissions
66 def __init__(self, processor, op, cfg, sstore):
67 """Constructor for LogicalUnit.
69 This needs to be overriden in derived classes in order to check op
73 self.processor = processor
77 for attr_name in self._OP_REQP:
78 attr_val = getattr(op, attr_name, None)
80 raise errors.OpPrereqError("Required parameter '%s' missing" %
83 if not cfg.IsCluster():
84 raise errors.OpPrereqError("Cluster not initialized yet,"
85 " use 'gnt-cluster init' first.")
87 master = sstore.GetMasterNode()
88 if master != socket.gethostname():
89 raise errors.OpPrereqError("Commands must be run on the master"
92 def CheckPrereq(self):
93 """Check prerequisites for this LU.
95 This method should check that the prerequisites for the execution
96 of this LU are fulfilled. It can do internode communication, but
97 it should be idempotent - no cluster or system changes are
100 The method should raise errors.OpPrereqError in case something is
101 not fulfilled. Its return value is ignored.
103 This method should also update all the parameters of the opcode to
104 their canonical form; e.g. a short node name must be fully
105 expanded after this method has successfully completed (so that
106 hooks, logging, etc. work correctly).
109 raise NotImplementedError
111 def Exec(self, feedback_fn):
114 This method should implement the actual work. It should raise
115 errors.OpExecError for failures that are somewhat dealt with in
119 raise NotImplementedError
121 def BuildHooksEnv(self):
122 """Build hooks environment for this LU.
124 This method should return a three-node tuple consisting of: a dict
125 containing the environment that will be used for running the
126 specific hook for this LU, a list of node names on which the hook
127 should run before the execution, and a list of node names on which
128 the hook should run after the execution.
130 The keys of the dict must not have 'GANETI_' prefixed as this will
131 be handled in the hooks runner. Also note additional keys will be
132 added by the hooks runner. If the LU doesn't define any
133 environment, an empty dict (and not None) should be returned.
135 As for the node lists, the master should not be included in the
136 them, as it will be added by the hooks runner in case this LU
137 requires a cluster to run on (otherwise we don't have a node
138 list). No nodes should be returned as an empty list (and not
141 Note that if the HPATH for a LU class is None, this function will
145 raise NotImplementedError
148 class NoHooksLU(LogicalUnit):
149 """Simple LU which runs no hooks.
151 This LU is intended as a parent for other LogicalUnits which will
152 run no hooks, in order to reduce duplicate code.
158 def BuildHooksEnv(self):
161 This is a no-op, since we don't run hooks.
167 def _GetWantedNodes(lu, nodes):
168 """Returns list of checked and expanded node names.
171 nodes: List of nodes (strings) or None for all
174 if not isinstance(nodes, list):
175 raise errors.OpPrereqError("Invalid argument type 'nodes'")
181 node = lu.cfg.ExpandNodeName(name)
183 raise errors.OpPrereqError("No such node name '%s'" % name)
187 wanted = lu.cfg.GetNodeList()
188 return utils.NiceSort(wanted)
191 def _GetWantedInstances(lu, instances):
192 """Returns list of checked and expanded instance names.
195 instances: List of instances (strings) or None for all
198 if not isinstance(instances, list):
199 raise errors.OpPrereqError("Invalid argument type 'instances'")
204 for name in instances:
205 instance = lu.cfg.ExpandInstanceName(name)
207 raise errors.OpPrereqError("No such instance name '%s'" % name)
208 wanted.append(instance)
211 wanted = lu.cfg.GetInstanceList()
212 return utils.NiceSort(wanted)
215 def _CheckOutputFields(static, dynamic, selected):
216 """Checks whether all selected fields are valid.
219 static: Static fields
220 dynamic: Dynamic fields
223 static_fields = frozenset(static)
224 dynamic_fields = frozenset(dynamic)
226 all_fields = static_fields | dynamic_fields
228 if not all_fields.issuperset(selected):
229 raise errors.OpPrereqError("Unknown output fields selected: %s"
230 % ",".join(frozenset(selected).
231 difference(all_fields)))
234 def _BuildInstanceHookEnv(name, primary_node, secondary_nodes, os_type, status,
235 memory, vcpus, nics):
236 """Builds instance related env variables for hooks from single variables.
239 secondary_nodes: List of secondary nodes as strings
242 "INSTANCE_NAME": name,
243 "INSTANCE_PRIMARY": primary_node,
244 "INSTANCE_SECONDARIES": " ".join(secondary_nodes),
245 "INSTANCE_OS_TYPE": os_type,
246 "INSTANCE_STATUS": status,
247 "INSTANCE_MEMORY": memory,
248 "INSTANCE_VCPUS": vcpus,
252 nic_count = len(nics)
253 for idx, (ip, bridge) in enumerate(nics):
256 env["INSTANCE_NIC%d_IP" % idx] = ip
257 env["INSTANCE_NIC%d_BRIDGE" % idx] = bridge
261 env["INSTANCE_NIC_COUNT"] = nic_count
266 def _BuildInstanceHookEnvByObject(instance, override=None):
267 """Builds instance related env variables for hooks from an object.
270 instance: objects.Instance object of instance
271 override: dict of values to override
274 'name': instance.name,
275 'primary_node': instance.primary_node,
276 'secondary_nodes': instance.secondary_nodes,
277 'os_type': instance.os,
278 'status': instance.os,
279 'memory': instance.memory,
280 'vcpus': instance.vcpus,
281 'nics': [(nic.ip, nic.bridge) for nic in instance.nics],
284 args.update(override)
285 return _BuildInstanceHookEnv(**args)
288 def _UpdateEtcHosts(fullnode, ip):
289 """Ensure a node has a correct entry in /etc/hosts.
292 fullnode - Fully qualified domain name of host. (str)
293 ip - IPv4 address of host (str)
296 node = fullnode.split(".", 1)[0]
298 f = open('/etc/hosts', 'r+')
307 rawline = f.readline()
313 line = rawline.split('\n')[0]
316 line = line.split('#')[0]
319 # Entire line was comment, skip
320 save_lines.append(rawline)
323 fields = line.split()
327 for spec in [ ip, fullnode, node ]:
328 if spec not in fields:
335 save_lines.append(rawline)
338 if havesome and not haveall:
339 # Line (old, or manual?) which is missing some. Remove.
343 save_lines.append(rawline)
346 add_lines.append('%s\t%s %s\n' % (ip, fullnode, node))
350 save_lines = save_lines + add_lines
352 # We removed a line, write a new file and replace old.
353 fd, tmpname = tempfile.mkstemp('tmp', 'hosts_', '/etc')
354 newfile = os.fdopen(fd, 'w')
355 newfile.write(''.join(save_lines))
357 os.rename(tmpname, '/etc/hosts')
360 # Simply appending a new line will do the trick.
362 for add in add_lines:
368 def _UpdateKnownHosts(fullnode, ip, pubkey):
369 """Ensure a node has a correct known_hosts entry.
372 fullnode - Fully qualified domain name of host. (str)
373 ip - IPv4 address of host (str)
374 pubkey - the public key of the cluster
377 if os.path.exists(constants.SSH_KNOWN_HOSTS_FILE):
378 f = open(constants.SSH_KNOWN_HOSTS_FILE, 'r+')
380 f = open(constants.SSH_KNOWN_HOSTS_FILE, 'w+')
389 rawline = f.readline()
390 logger.Debug('read %s' % (repr(rawline),))
396 line = rawline.split('\n')[0]
398 parts = line.split(' ')
399 fields = parts[0].split(',')
404 for spec in [ ip, fullnode ]:
405 if spec not in fields:
410 logger.Debug("key, pubkey = %s." % (repr((key, pubkey)),))
411 if haveall and key == pubkey:
413 save_lines.append(rawline)
414 logger.Debug("Keeping known_hosts '%s'." % (repr(rawline),))
417 if havesome and (not haveall or key != pubkey):
419 logger.Debug("Discarding known_hosts '%s'." % (repr(rawline),))
422 save_lines.append(rawline)
425 add_lines.append('%s,%s ssh-rsa %s\n' % (fullnode, ip, pubkey))
426 logger.Debug("Adding known_hosts '%s'." % (repr(add_lines[-1]),))
429 save_lines = save_lines + add_lines
431 # Write a new file and replace old.
432 fd, tmpname = tempfile.mkstemp('.tmp', 'known_hosts.',
434 newfile = os.fdopen(fd, 'w')
436 newfile.write(''.join(save_lines))
439 logger.Debug("Wrote new known_hosts.")
440 os.rename(tmpname, constants.SSH_KNOWN_HOSTS_FILE)
443 # Simply appending a new line will do the trick.
445 for add in add_lines:
451 def _HasValidVG(vglist, vgname):
452 """Checks if the volume group list is valid.
454 A non-None return value means there's an error, and the return value
455 is the error message.
458 vgsize = vglist.get(vgname, None)
460 return "volume group '%s' missing" % vgname
462 return ("volume group '%s' too small (20480MiB required, %dMib found)" %
467 def _InitSSHSetup(node):
468 """Setup the SSH configuration for the cluster.
471 This generates a dsa keypair for root, adds the pub key to the
472 permitted hosts and adds the hostkey to its own known hosts.
475 node: the name of this host as a fqdn
478 if os.path.exists('/root/.ssh/id_dsa'):
479 utils.CreateBackup('/root/.ssh/id_dsa')
480 if os.path.exists('/root/.ssh/id_dsa.pub'):
481 utils.CreateBackup('/root/.ssh/id_dsa.pub')
483 utils.RemoveFile('/root/.ssh/id_dsa')
484 utils.RemoveFile('/root/.ssh/id_dsa.pub')
486 result = utils.RunCmd(["ssh-keygen", "-t", "dsa",
487 "-f", "/root/.ssh/id_dsa",
490 raise errors.OpExecError("Could not generate ssh keypair, error %s" %
493 f = open('/root/.ssh/id_dsa.pub', 'r')
495 utils.AddAuthorizedKey('/root/.ssh/authorized_keys', f.read(8192))
500 def _InitGanetiServerSetup(ss):
501 """Setup the necessary configuration for the initial node daemon.
503 This creates the nodepass file containing the shared password for
504 the cluster and also generates the SSL certificate.
507 # Create pseudo random password
508 randpass = sha.new(os.urandom(64)).hexdigest()
509 # and write it into sstore
510 ss.SetKey(ss.SS_NODED_PASS, randpass)
512 result = utils.RunCmd(["openssl", "req", "-new", "-newkey", "rsa:1024",
513 "-days", str(365*5), "-nodes", "-x509",
514 "-keyout", constants.SSL_CERT_FILE,
515 "-out", constants.SSL_CERT_FILE, "-batch"])
517 raise errors.OpExecError("could not generate server ssl cert, command"
518 " %s had exitcode %s and error message %s" %
519 (result.cmd, result.exit_code, result.output))
521 os.chmod(constants.SSL_CERT_FILE, 0400)
523 result = utils.RunCmd([constants.NODE_INITD_SCRIPT, "restart"])
526 raise errors.OpExecError("Could not start the node daemon, command %s"
527 " had exitcode %s and error %s" %
528 (result.cmd, result.exit_code, result.output))
531 class LUInitCluster(LogicalUnit):
532 """Initialise the cluster.
535 HPATH = "cluster-init"
536 HTYPE = constants.HTYPE_CLUSTER
537 _OP_REQP = ["cluster_name", "hypervisor_type", "vg_name", "mac_prefix",
538 "def_bridge", "master_netdev"]
541 def BuildHooksEnv(self):
544 Notes: Since we don't require a cluster, we must manually add
545 ourselves in the post-run node list.
549 "CLUSTER": self.op.cluster_name,
550 "MASTER": self.hostname['hostname_full'],
552 return env, [], [self.hostname['hostname_full']]
554 def CheckPrereq(self):
555 """Verify that the passed name is a valid one.
558 if config.ConfigWriter.IsCluster():
559 raise errors.OpPrereqError("Cluster is already initialised")
561 hostname_local = socket.gethostname()
562 self.hostname = hostname = utils.LookupHostname(hostname_local)
564 raise errors.OpPrereqError("Cannot resolve my own hostname ('%s')" %
567 if hostname["hostname_full"] != hostname_local:
568 raise errors.OpPrereqError("My own hostname (%s) does not match the"
569 " resolver (%s): probably not using FQDN"
571 (hostname_local, hostname["hostname_full"]))
573 if hostname["ip"].startswith("127."):
574 raise errors.OpPrereqError("This host's IP resolves to the private"
575 " range (%s). Please fix DNS or /etc/hosts." %
578 self.clustername = clustername = utils.LookupHostname(self.op.cluster_name)
580 raise errors.OpPrereqError("Cannot resolve given cluster name ('%s')"
581 % self.op.cluster_name)
583 result = utils.RunCmd(["fping", "-S127.0.0.1", "-q", hostname['ip']])
585 raise errors.OpPrereqError("Inconsistency: this host's name resolves"
586 " to %s,\nbut this ip address does not"
587 " belong to this host."
588 " Aborting." % hostname['ip'])
590 secondary_ip = getattr(self.op, "secondary_ip", None)
591 if secondary_ip and not utils.IsValidIP(secondary_ip):
592 raise errors.OpPrereqError("Invalid secondary ip given")
593 if secondary_ip and secondary_ip != hostname['ip']:
594 result = utils.RunCmd(["fping", "-S127.0.0.1", "-q", secondary_ip])
596 raise errors.OpPrereqError("You gave %s as secondary IP,\n"
597 "but it does not belong to this host." %
599 self.secondary_ip = secondary_ip
601 # checks presence of the volume group given
602 vgstatus = _HasValidVG(utils.ListVolumeGroups(), self.op.vg_name)
605 raise errors.OpPrereqError("Error: %s" % vgstatus)
607 if not re.match("^[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}$",
609 raise errors.OpPrereqError("Invalid mac prefix given '%s'" %
612 if self.op.hypervisor_type not in hypervisor.VALID_HTYPES:
613 raise errors.OpPrereqError("Invalid hypervisor type given '%s'" %
614 self.op.hypervisor_type)
616 result = utils.RunCmd(["ip", "link", "show", "dev", self.op.master_netdev])
618 raise errors.OpPrereqError("Invalid master netdev given (%s): '%s'" %
619 (self.op.master_netdev,
620 result.output.strip()))
622 def Exec(self, feedback_fn):
623 """Initialize the cluster.
626 clustername = self.clustername
627 hostname = self.hostname
629 # set up the simple store
630 ss = ssconf.SimpleStore()
631 ss.SetKey(ss.SS_HYPERVISOR, self.op.hypervisor_type)
632 ss.SetKey(ss.SS_MASTER_NODE, hostname['hostname_full'])
633 ss.SetKey(ss.SS_MASTER_IP, clustername['ip'])
634 ss.SetKey(ss.SS_MASTER_NETDEV, self.op.master_netdev)
635 ss.SetKey(ss.SS_CLUSTER_NAME, clustername['hostname'])
637 # set up the inter-node password and certificate
638 _InitGanetiServerSetup(ss)
640 # start the master ip
641 rpc.call_node_start_master(hostname['hostname_full'])
643 # set up ssh config and /etc/hosts
644 f = open('/etc/ssh/ssh_host_rsa_key.pub', 'r')
649 sshkey = sshline.split(" ")[1]
651 _UpdateEtcHosts(hostname['hostname_full'],
655 _UpdateKnownHosts(hostname['hostname_full'],
660 _InitSSHSetup(hostname['hostname'])
662 # init of cluster config file
663 cfgw = config.ConfigWriter()
664 cfgw.InitConfig(hostname['hostname'], hostname['ip'], self.secondary_ip,
665 sshkey, self.op.mac_prefix,
666 self.op.vg_name, self.op.def_bridge)
669 class LUDestroyCluster(NoHooksLU):
670 """Logical unit for destroying the cluster.
675 def CheckPrereq(self):
676 """Check prerequisites.
678 This checks whether the cluster is empty.
680 Any errors are signalled by raising errors.OpPrereqError.
683 master = self.sstore.GetMasterNode()
685 nodelist = self.cfg.GetNodeList()
686 if len(nodelist) != 1 or nodelist[0] != master:
687 raise errors.OpPrereqError("There are still %d node(s) in"
688 " this cluster." % (len(nodelist) - 1))
689 instancelist = self.cfg.GetInstanceList()
691 raise errors.OpPrereqError("There are still %d instance(s) in"
692 " this cluster." % len(instancelist))
694 def Exec(self, feedback_fn):
695 """Destroys the cluster.
698 utils.CreateBackup('/root/.ssh/id_dsa')
699 utils.CreateBackup('/root/.ssh/id_dsa.pub')
700 rpc.call_node_leave_cluster(self.sstore.GetMasterNode())
703 class LUVerifyCluster(NoHooksLU):
704 """Verifies the cluster status.
709 def _VerifyNode(self, node, file_list, local_cksum, vglist, node_result,
710 remote_version, feedback_fn):
711 """Run multiple tests against a node.
714 - compares ganeti version
715 - checks vg existance and size > 20G
716 - checks config file checksum
717 - checks ssh to other nodes
720 node: name of the node to check
721 file_list: required list of files
722 local_cksum: dictionary of local files and their checksums
725 # compares ganeti version
726 local_version = constants.PROTOCOL_VERSION
727 if not remote_version:
728 feedback_fn(" - ERROR: connection to %s failed" % (node))
731 if local_version != remote_version:
732 feedback_fn(" - ERROR: sw version mismatch: master %s, node(%s) %s" %
733 (local_version, node, remote_version))
736 # checks vg existance and size > 20G
740 feedback_fn(" - ERROR: unable to check volume groups on node %s." %
744 vgstatus = _HasValidVG(vglist, self.cfg.GetVGName())
746 feedback_fn(" - ERROR: %s on node %s" % (vgstatus, node))
749 # checks config file checksum
752 if 'filelist' not in node_result:
754 feedback_fn(" - ERROR: node hasn't returned file checksum data")
756 remote_cksum = node_result['filelist']
757 for file_name in file_list:
758 if file_name not in remote_cksum:
760 feedback_fn(" - ERROR: file '%s' missing" % file_name)
761 elif remote_cksum[file_name] != local_cksum[file_name]:
763 feedback_fn(" - ERROR: file '%s' has wrong checksum" % file_name)
765 if 'nodelist' not in node_result:
767 feedback_fn(" - ERROR: node hasn't returned node connectivity data")
769 if node_result['nodelist']:
771 for node in node_result['nodelist']:
772 feedback_fn(" - ERROR: communication with node '%s': %s" %
773 (node, node_result['nodelist'][node]))
774 hyp_result = node_result.get('hypervisor', None)
775 if hyp_result is not None:
776 feedback_fn(" - ERROR: hypervisor verify failure: '%s'" % hyp_result)
779 def _VerifyInstance(self, instance, node_vol_is, node_instance, feedback_fn):
780 """Verify an instance.
782 This function checks to see if the required block devices are
783 available on the instance's node.
788 instancelist = self.cfg.GetInstanceList()
789 if not instance in instancelist:
790 feedback_fn(" - ERROR: instance %s not in instance list %s" %
791 (instance, instancelist))
794 instanceconfig = self.cfg.GetInstanceInfo(instance)
795 node_current = instanceconfig.primary_node
798 instanceconfig.MapLVsByNode(node_vol_should)
800 for node in node_vol_should:
801 for volume in node_vol_should[node]:
802 if node not in node_vol_is or volume not in node_vol_is[node]:
803 feedback_fn(" - ERROR: volume %s missing on node %s" %
807 if not instanceconfig.status == 'down':
808 if not instance in node_instance[node_current]:
809 feedback_fn(" - ERROR: instance %s not running on node %s" %
810 (instance, node_current))
813 for node in node_instance:
814 if (not node == node_current):
815 if instance in node_instance[node]:
816 feedback_fn(" - ERROR: instance %s should not run on node %s" %
822 def _VerifyOrphanVolumes(self, node_vol_should, node_vol_is, feedback_fn):
823 """Verify if there are any unknown volumes in the cluster.
825 The .os, .swap and backup volumes are ignored. All other volumes are
831 for node in node_vol_is:
832 for volume in node_vol_is[node]:
833 if node not in node_vol_should or volume not in node_vol_should[node]:
834 feedback_fn(" - ERROR: volume %s on node %s should not exist" %
839 def _VerifyOrphanInstances(self, instancelist, node_instance, feedback_fn):
840 """Verify the list of running instances.
842 This checks what instances are running but unknown to the cluster.
846 for node in node_instance:
847 for runninginstance in node_instance[node]:
848 if runninginstance not in instancelist:
849 feedback_fn(" - ERROR: instance %s on node %s should not exist" %
850 (runninginstance, node))
854 def CheckPrereq(self):
855 """Check prerequisites.
857 This has no prerequisites.
862 def Exec(self, feedback_fn):
863 """Verify integrity of cluster, performing various test on nodes.
867 feedback_fn("* Verifying global settings")
868 self.cfg.VerifyConfig()
870 master = self.sstore.GetMasterNode()
871 vg_name = self.cfg.GetVGName()
872 nodelist = utils.NiceSort(self.cfg.GetNodeList())
873 instancelist = utils.NiceSort(self.cfg.GetInstanceList())
877 # FIXME: verify OS list
879 file_names = list(self.sstore.GetFileList())
880 file_names.append(constants.SSL_CERT_FILE)
881 file_names.append(constants.CLUSTER_CONF_FILE)
882 local_checksums = utils.FingerprintFiles(file_names)
884 feedback_fn("* Gathering data (%d nodes)" % len(nodelist))
885 all_volumeinfo = rpc.call_volume_list(nodelist, vg_name)
886 all_instanceinfo = rpc.call_instance_list(nodelist)
887 all_vglist = rpc.call_vg_list(nodelist)
888 node_verify_param = {
889 'filelist': file_names,
890 'nodelist': nodelist,
893 all_nvinfo = rpc.call_node_verify(nodelist, node_verify_param)
894 all_rversion = rpc.call_version(nodelist)
896 for node in nodelist:
897 feedback_fn("* Verifying node %s" % node)
898 result = self._VerifyNode(node, file_names, local_checksums,
899 all_vglist[node], all_nvinfo[node],
900 all_rversion[node], feedback_fn)
904 volumeinfo = all_volumeinfo[node]
906 if type(volumeinfo) != dict:
907 feedback_fn(" - ERROR: connection to %s failed" % (node,))
911 node_volume[node] = volumeinfo
914 nodeinstance = all_instanceinfo[node]
915 if type(nodeinstance) != list:
916 feedback_fn(" - ERROR: connection to %s failed" % (node,))
920 node_instance[node] = nodeinstance
924 for instance in instancelist:
925 feedback_fn("* Verifying instance %s" % instance)
926 result = self._VerifyInstance(instance, node_volume, node_instance,
930 inst_config = self.cfg.GetInstanceInfo(instance)
932 inst_config.MapLVsByNode(node_vol_should)
934 feedback_fn("* Verifying orphan volumes")
935 result = self._VerifyOrphanVolumes(node_vol_should, node_volume,
939 feedback_fn("* Verifying remaining instances")
940 result = self._VerifyOrphanInstances(instancelist, node_instance,
947 def _WaitForSync(cfgw, instance, oneshot=False, unlock=False):
948 """Sleep and poll for an instance's disk to sync.
951 if not instance.disks:
955 logger.ToStdout("Waiting for instance %s to sync disks." % instance.name)
957 node = instance.primary_node
959 for dev in instance.disks:
960 cfgw.SetDiskID(dev, node)
966 cumul_degraded = False
967 rstats = rpc.call_blockdev_getmirrorstatus(node, instance.disks)
969 logger.ToStderr("Can't get any data from node %s" % node)
972 raise errors.RemoteError("Can't contact node %s for mirror data,"
977 for i in range(len(rstats)):
980 logger.ToStderr("Can't compute data for node %s/%s" %
981 (node, instance.disks[i].iv_name))
983 perc_done, est_time, is_degraded = mstat
984 cumul_degraded = cumul_degraded or (is_degraded and perc_done is None)
985 if perc_done is not None:
987 if est_time is not None:
988 rem_time = "%d estimated seconds remaining" % est_time
991 rem_time = "no time estimate"
992 logger.ToStdout("- device %s: %5.2f%% done, %s" %
993 (instance.disks[i].iv_name, perc_done, rem_time))
1000 time.sleep(min(60, max_time))
1006 logger.ToStdout("Instance %s's disks are in sync." % instance.name)
1007 return not cumul_degraded
1010 def _CheckDiskConsistency(cfgw, dev, node, on_primary):
1011 """Check that mirrors are not degraded.
1014 cfgw.SetDiskID(dev, node)
1017 if on_primary or dev.AssembleOnSecondary():
1018 rstats = rpc.call_blockdev_find(node, dev)
1020 logger.ToStderr("Can't get any data from node %s" % node)
1023 result = result and (not rstats[5])
1025 for child in dev.children:
1026 result = result and _CheckDiskConsistency(cfgw, child, node, on_primary)
1031 class LUDiagnoseOS(NoHooksLU):
1032 """Logical unit for OS diagnose/query.
1037 def CheckPrereq(self):
1038 """Check prerequisites.
1040 This always succeeds, since this is a pure query LU.
1045 def Exec(self, feedback_fn):
1046 """Compute the list of OSes.
1049 node_list = self.cfg.GetNodeList()
1050 node_data = rpc.call_os_diagnose(node_list)
1051 if node_data == False:
1052 raise errors.OpExecError("Can't gather the list of OSes")
1056 class LURemoveNode(LogicalUnit):
1057 """Logical unit for removing a node.
1060 HPATH = "node-remove"
1061 HTYPE = constants.HTYPE_NODE
1062 _OP_REQP = ["node_name"]
1064 def BuildHooksEnv(self):
1067 This doesn't run on the target node in the pre phase as a failed
1068 node would not allows itself to run.
1072 "NODE_NAME": self.op.node_name,
1074 all_nodes = self.cfg.GetNodeList()
1075 all_nodes.remove(self.op.node_name)
1076 return env, all_nodes, all_nodes
1078 def CheckPrereq(self):
1079 """Check prerequisites.
1082 - the node exists in the configuration
1083 - it does not have primary or secondary instances
1084 - it's not the master
1086 Any errors are signalled by raising errors.OpPrereqError.
1089 node = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.node_name))
1091 raise errors.OpPrereqError, ("Node '%s' is unknown." % self.op.node_name)
1093 instance_list = self.cfg.GetInstanceList()
1095 masternode = self.sstore.GetMasterNode()
1096 if node.name == masternode:
1097 raise errors.OpPrereqError("Node is the master node,"
1098 " you need to failover first.")
1100 for instance_name in instance_list:
1101 instance = self.cfg.GetInstanceInfo(instance_name)
1102 if node.name == instance.primary_node:
1103 raise errors.OpPrereqError("Instance %s still running on the node,"
1104 " please remove first." % instance_name)
1105 if node.name in instance.secondary_nodes:
1106 raise errors.OpPrereqError("Instance %s has node as a secondary,"
1107 " please remove first." % instance_name)
1108 self.op.node_name = node.name
1111 def Exec(self, feedback_fn):
1112 """Removes the node from the cluster.
1116 logger.Info("stopping the node daemon and removing configs from node %s" %
1119 rpc.call_node_leave_cluster(node.name)
1121 ssh.SSHCall(node.name, 'root', "%s stop" % constants.NODE_INITD_SCRIPT)
1123 logger.Info("Removing node %s from config" % node.name)
1125 self.cfg.RemoveNode(node.name)
1128 class LUQueryNodes(NoHooksLU):
1129 """Logical unit for querying nodes.
1132 _OP_REQP = ["output_fields", "nodes"]
1134 def CheckPrereq(self):
1135 """Check prerequisites.
1137 This checks that the fields required are valid output fields.
1140 self.dynamic_fields = frozenset(["dtotal", "dfree",
1141 "mtotal", "mnode", "mfree"])
1143 _CheckOutputFields(static=["name", "pinst_cnt", "sinst_cnt",
1144 "pinst_list", "sinst_list",
1146 dynamic=self.dynamic_fields,
1147 selected=self.op.output_fields)
1149 self.wanted_nodes = _GetWantedNodes(self, self.op.nodes)
1151 def Exec(self, feedback_fn):
1152 """Computes the list of nodes and their attributes.
1155 nodenames = self.wanted_nodes
1156 nodelist = [self.cfg.GetNodeInfo(name) for name in nodenames]
1158 # begin data gathering
1160 if self.dynamic_fields.intersection(self.op.output_fields):
1162 node_data = rpc.call_node_info(nodenames, self.cfg.GetVGName())
1163 for name in nodenames:
1164 nodeinfo = node_data.get(name, None)
1167 "mtotal": utils.TryConvert(int, nodeinfo['memory_total']),
1168 "mnode": utils.TryConvert(int, nodeinfo['memory_dom0']),
1169 "mfree": utils.TryConvert(int, nodeinfo['memory_free']),
1170 "dtotal": utils.TryConvert(int, nodeinfo['vg_size']),
1171 "dfree": utils.TryConvert(int, nodeinfo['vg_free']),
1174 live_data[name] = {}
1176 live_data = dict.fromkeys(nodenames, {})
1178 node_to_primary = dict([(name, set()) for name in nodenames])
1179 node_to_secondary = dict([(name, set()) for name in nodenames])
1181 inst_fields = frozenset(("pinst_cnt", "pinst_list",
1182 "sinst_cnt", "sinst_list"))
1183 if inst_fields & frozenset(self.op.output_fields):
1184 instancelist = self.cfg.GetInstanceList()
1186 for instance_name in instancelist:
1187 inst = self.cfg.GetInstanceInfo(instance_name)
1188 if inst.primary_node in node_to_primary:
1189 node_to_primary[inst.primary_node].add(inst.name)
1190 for secnode in inst.secondary_nodes:
1191 if secnode in node_to_secondary:
1192 node_to_secondary[secnode].add(inst.name)
1194 # end data gathering
1197 for node in nodelist:
1199 for field in self.op.output_fields:
1202 elif field == "pinst_list":
1203 val = list(node_to_primary[node.name])
1204 elif field == "sinst_list":
1205 val = list(node_to_secondary[node.name])
1206 elif field == "pinst_cnt":
1207 val = len(node_to_primary[node.name])
1208 elif field == "sinst_cnt":
1209 val = len(node_to_secondary[node.name])
1210 elif field == "pip":
1211 val = node.primary_ip
1212 elif field == "sip":
1213 val = node.secondary_ip
1214 elif field in self.dynamic_fields:
1215 val = live_data[node.name].get(field, None)
1217 raise errors.ParameterError(field)
1218 node_output.append(val)
1219 output.append(node_output)
1224 class LUQueryNodeVolumes(NoHooksLU):
1225 """Logical unit for getting volumes on node(s).
1228 _OP_REQP = ["nodes", "output_fields"]
1230 def CheckPrereq(self):
1231 """Check prerequisites.
1233 This checks that the fields required are valid output fields.
1236 self.nodes = _GetWantedNodes(self, self.op.nodes)
1238 _CheckOutputFields(static=["node"],
1239 dynamic=["phys", "vg", "name", "size", "instance"],
1240 selected=self.op.output_fields)
1243 def Exec(self, feedback_fn):
1244 """Computes the list of nodes and their attributes.
1247 nodenames = self.nodes
1248 volumes = rpc.call_node_volumes(nodenames)
1250 ilist = [self.cfg.GetInstanceInfo(iname) for iname
1251 in self.cfg.GetInstanceList()]
1253 lv_by_node = dict([(inst, inst.MapLVsByNode()) for inst in ilist])
1256 for node in nodenames:
1257 if node not in volumes or not volumes[node]:
1260 node_vols = volumes[node][:]
1261 node_vols.sort(key=lambda vol: vol['dev'])
1263 for vol in node_vols:
1265 for field in self.op.output_fields:
1268 elif field == "phys":
1272 elif field == "name":
1274 elif field == "size":
1275 val = int(float(vol['size']))
1276 elif field == "instance":
1278 if node not in lv_by_node[inst]:
1280 if vol['name'] in lv_by_node[inst][node]:
1286 raise errors.ParameterError(field)
1287 node_output.append(str(val))
1289 output.append(node_output)
1294 class LUAddNode(LogicalUnit):
1295 """Logical unit for adding node to the cluster.
1299 HTYPE = constants.HTYPE_NODE
1300 _OP_REQP = ["node_name"]
1302 def BuildHooksEnv(self):
1305 This will run on all nodes before, and on all nodes + the new node after.
1309 "NODE_NAME": self.op.node_name,
1310 "NODE_PIP": self.op.primary_ip,
1311 "NODE_SIP": self.op.secondary_ip,
1313 nodes_0 = self.cfg.GetNodeList()
1314 nodes_1 = nodes_0 + [self.op.node_name, ]
1315 return env, nodes_0, nodes_1
1317 def CheckPrereq(self):
1318 """Check prerequisites.
1321 - the new node is not already in the config
1323 - its parameters (single/dual homed) matches the cluster
1325 Any errors are signalled by raising errors.OpPrereqError.
1328 node_name = self.op.node_name
1331 dns_data = utils.LookupHostname(node_name)
1333 raise errors.OpPrereqError("Node %s is not resolvable" % node_name)
1335 node = dns_data['hostname']
1336 primary_ip = self.op.primary_ip = dns_data['ip']
1337 secondary_ip = getattr(self.op, "secondary_ip", None)
1338 if secondary_ip is None:
1339 secondary_ip = primary_ip
1340 if not utils.IsValidIP(secondary_ip):
1341 raise errors.OpPrereqError("Invalid secondary IP given")
1342 self.op.secondary_ip = secondary_ip
1343 node_list = cfg.GetNodeList()
1344 if node in node_list:
1345 raise errors.OpPrereqError("Node %s is already in the configuration"
1348 for existing_node_name in node_list:
1349 existing_node = cfg.GetNodeInfo(existing_node_name)
1350 if (existing_node.primary_ip == primary_ip or
1351 existing_node.secondary_ip == primary_ip or
1352 existing_node.primary_ip == secondary_ip or
1353 existing_node.secondary_ip == secondary_ip):
1354 raise errors.OpPrereqError("New node ip address(es) conflict with"
1355 " existing node %s" % existing_node.name)
1357 # check that the type of the node (single versus dual homed) is the
1358 # same as for the master
1359 myself = cfg.GetNodeInfo(self.sstore.GetMasterNode())
1360 master_singlehomed = myself.secondary_ip == myself.primary_ip
1361 newbie_singlehomed = secondary_ip == primary_ip
1362 if master_singlehomed != newbie_singlehomed:
1363 if master_singlehomed:
1364 raise errors.OpPrereqError("The master has no private ip but the"
1365 " new node has one")
1367 raise errors.OpPrereqError("The master has a private ip but the"
1368 " new node doesn't have one")
1370 # checks reachablity
1371 command = ["fping", "-q", primary_ip]
1372 result = utils.RunCmd(command)
1374 raise errors.OpPrereqError("Node not reachable by ping")
1376 if not newbie_singlehomed:
1377 # check reachability from my secondary ip to newbie's secondary ip
1378 command = ["fping", "-S%s" % myself.secondary_ip, "-q", secondary_ip]
1379 result = utils.RunCmd(command)
1381 raise errors.OpPrereqError("Node secondary ip not reachable by ping")
1383 self.new_node = objects.Node(name=node,
1384 primary_ip=primary_ip,
1385 secondary_ip=secondary_ip)
1387 def Exec(self, feedback_fn):
1388 """Adds the new node to the cluster.
1391 new_node = self.new_node
1392 node = new_node.name
1394 # set up inter-node password and certificate and restarts the node daemon
1395 gntpass = self.sstore.GetNodeDaemonPassword()
1396 if not re.match('^[a-zA-Z0-9.]{1,64}$', gntpass):
1397 raise errors.OpExecError("ganeti password corruption detected")
1398 f = open(constants.SSL_CERT_FILE)
1400 gntpem = f.read(8192)
1403 # in the base64 pem encoding, neither '!' nor '.' are valid chars,
1404 # so we use this to detect an invalid certificate; as long as the
1405 # cert doesn't contain this, the here-document will be correctly
1406 # parsed by the shell sequence below
1407 if re.search('^!EOF\.', gntpem, re.MULTILINE):
1408 raise errors.OpExecError("invalid PEM encoding in the SSL certificate")
1409 if not gntpem.endswith("\n"):
1410 raise errors.OpExecError("PEM must end with newline")
1411 logger.Info("copy cluster pass to %s and starting the node daemon" % node)
1413 # and then connect with ssh to set password and start ganeti-noded
1414 # note that all the below variables are sanitized at this point,
1415 # either by being constants or by the checks above
1417 mycommand = ("umask 077 && "
1418 "echo '%s' > '%s' && "
1419 "cat > '%s' << '!EOF.' && \n"
1420 "%s!EOF.\n%s restart" %
1421 (gntpass, ss.KeyToFilename(ss.SS_NODED_PASS),
1422 constants.SSL_CERT_FILE, gntpem,
1423 constants.NODE_INITD_SCRIPT))
1425 result = ssh.SSHCall(node, 'root', mycommand, batch=False, ask_key=True)
1427 raise errors.OpExecError("Remote command on node %s, error: %s,"
1429 (node, result.fail_reason, result.output))
1431 # check connectivity
1434 result = rpc.call_version([node])[node]
1436 if constants.PROTOCOL_VERSION == result:
1437 logger.Info("communication to node %s fine, sw version %s match" %
1440 raise errors.OpExecError("Version mismatch master version %s,"
1441 " node version %s" %
1442 (constants.PROTOCOL_VERSION, result))
1444 raise errors.OpExecError("Cannot get version from the new node")
1447 logger.Info("copy ssh key to node %s" % node)
1449 keyfiles = ["/etc/ssh/ssh_host_dsa_key", "/etc/ssh/ssh_host_dsa_key.pub",
1450 "/etc/ssh/ssh_host_rsa_key", "/etc/ssh/ssh_host_rsa_key.pub",
1451 "/root/.ssh/id_dsa", "/root/.ssh/id_dsa.pub"]
1456 keyarray.append(f.read())
1460 result = rpc.call_node_add(node, keyarray[0], keyarray[1], keyarray[2],
1461 keyarray[3], keyarray[4], keyarray[5])
1464 raise errors.OpExecError("Cannot transfer ssh keys to the new node")
1466 # Add node to our /etc/hosts, and add key to known_hosts
1467 _UpdateEtcHosts(new_node.name, new_node.primary_ip)
1468 _UpdateKnownHosts(new_node.name, new_node.primary_ip,
1469 self.cfg.GetHostKey())
1471 if new_node.secondary_ip != new_node.primary_ip:
1472 result = ssh.SSHCall(node, "root",
1473 "fping -S 127.0.0.1 -q %s" % new_node.secondary_ip)
1475 raise errors.OpExecError("Node claims it doesn't have the"
1476 " secondary ip you gave (%s).\n"
1477 "Please fix and re-run this command." %
1478 new_node.secondary_ip)
1480 success, msg = ssh.VerifyNodeHostname(node)
1482 raise errors.OpExecError("Node '%s' claims it has a different hostname"
1483 " than the one the resolver gives: %s.\n"
1484 "Please fix and re-run this command." %
1487 # Distribute updated /etc/hosts and known_hosts to all nodes,
1488 # including the node just added
1489 myself = self.cfg.GetNodeInfo(self.sstore.GetMasterNode())
1490 dist_nodes = self.cfg.GetNodeList() + [node]
1491 if myself.name in dist_nodes:
1492 dist_nodes.remove(myself.name)
1494 logger.Debug("Copying hosts and known_hosts to all nodes")
1495 for fname in ("/etc/hosts", constants.SSH_KNOWN_HOSTS_FILE):
1496 result = rpc.call_upload_file(dist_nodes, fname)
1497 for to_node in dist_nodes:
1498 if not result[to_node]:
1499 logger.Error("copy of file %s to node %s failed" %
1502 to_copy = ss.GetFileList()
1503 for fname in to_copy:
1504 if not ssh.CopyFileToNode(node, fname):
1505 logger.Error("could not copy file %s to node %s" % (fname, node))
1507 logger.Info("adding node %s to cluster.conf" % node)
1508 self.cfg.AddNode(new_node)
1511 class LUMasterFailover(LogicalUnit):
1512 """Failover the master node to the current node.
1514 This is a special LU in that it must run on a non-master node.
1517 HPATH = "master-failover"
1518 HTYPE = constants.HTYPE_CLUSTER
1522 def BuildHooksEnv(self):
1525 This will run on the new master only in the pre phase, and on all
1526 the nodes in the post phase.
1530 "NEW_MASTER": self.new_master,
1531 "OLD_MASTER": self.old_master,
1533 return env, [self.new_master], self.cfg.GetNodeList()
1535 def CheckPrereq(self):
1536 """Check prerequisites.
1538 This checks that we are not already the master.
1541 self.new_master = socket.gethostname()
1543 self.old_master = self.sstore.GetMasterNode()
1545 if self.old_master == self.new_master:
1546 raise errors.OpPrereqError("This commands must be run on the node"
1547 " where you want the new master to be.\n"
1548 "%s is already the master" %
1551 def Exec(self, feedback_fn):
1552 """Failover the master node.
1554 This command, when run on a non-master node, will cause the current
1555 master to cease being master, and the non-master to become new
1559 #TODO: do not rely on gethostname returning the FQDN
1560 logger.Info("setting master to %s, old master: %s" %
1561 (self.new_master, self.old_master))
1563 if not rpc.call_node_stop_master(self.old_master):
1564 logger.Error("could disable the master role on the old master"
1565 " %s, please disable manually" % self.old_master)
1568 ss.SetKey(ss.SS_MASTER_NODE, self.new_master)
1569 if not rpc.call_upload_file(self.cfg.GetNodeList(),
1570 ss.KeyToFilename(ss.SS_MASTER_NODE)):
1571 logger.Error("could not distribute the new simple store master file"
1572 " to the other nodes, please check.")
1574 if not rpc.call_node_start_master(self.new_master):
1575 logger.Error("could not start the master role on the new master"
1576 " %s, please check" % self.new_master)
1577 feedback_fn("Error in activating the master IP on the new master,\n"
1578 "please fix manually.")
1582 class LUQueryClusterInfo(NoHooksLU):
1583 """Query cluster configuration.
1589 def CheckPrereq(self):
1590 """No prerequsites needed for this LU.
1595 def Exec(self, feedback_fn):
1596 """Return cluster config.
1600 "name": self.sstore.GetClusterName(),
1601 "software_version": constants.RELEASE_VERSION,
1602 "protocol_version": constants.PROTOCOL_VERSION,
1603 "config_version": constants.CONFIG_VERSION,
1604 "os_api_version": constants.OS_API_VERSION,
1605 "export_version": constants.EXPORT_VERSION,
1606 "master": self.sstore.GetMasterNode(),
1607 "architecture": (platform.architecture()[0], platform.machine()),
1613 class LUClusterCopyFile(NoHooksLU):
1614 """Copy file to cluster.
1617 _OP_REQP = ["nodes", "filename"]
1619 def CheckPrereq(self):
1620 """Check prerequisites.
1622 It should check that the named file exists and that the given list
1626 if not os.path.exists(self.op.filename):
1627 raise errors.OpPrereqError("No such filename '%s'" % self.op.filename)
1629 self.nodes = _GetWantedNodes(self, self.op.nodes)
1631 def Exec(self, feedback_fn):
1632 """Copy a file from master to some nodes.
1635 opts - class with options as members
1636 args - list containing a single element, the file name
1638 nodes - list containing the name of target nodes; if empty, all nodes
1641 filename = self.op.filename
1643 myname = socket.gethostname()
1645 for node in self.nodes:
1648 if not ssh.CopyFileToNode(node, filename):
1649 logger.Error("Copy of file %s to node %s failed" % (filename, node))
1652 class LUDumpClusterConfig(NoHooksLU):
1653 """Return a text-representation of the cluster-config.
1658 def CheckPrereq(self):
1659 """No prerequisites.
1664 def Exec(self, feedback_fn):
1665 """Dump a representation of the cluster config to the standard output.
1668 return self.cfg.DumpConfig()
1671 class LURunClusterCommand(NoHooksLU):
1672 """Run a command on some nodes.
1675 _OP_REQP = ["command", "nodes"]
1677 def CheckPrereq(self):
1678 """Check prerequisites.
1680 It checks that the given list of nodes is valid.
1683 self.nodes = _GetWantedNodes(self, self.op.nodes)
1685 def Exec(self, feedback_fn):
1686 """Run a command on some nodes.
1690 for node in self.nodes:
1691 result = ssh.SSHCall(node, "root", self.op.command)
1692 data.append((node, result.output, result.exit_code))
1697 class LUActivateInstanceDisks(NoHooksLU):
1698 """Bring up an instance's disks.
1701 _OP_REQP = ["instance_name"]
1703 def CheckPrereq(self):
1704 """Check prerequisites.
1706 This checks that the instance is in the cluster.
1709 instance = self.cfg.GetInstanceInfo(
1710 self.cfg.ExpandInstanceName(self.op.instance_name))
1711 if instance is None:
1712 raise errors.OpPrereqError("Instance '%s' not known" %
1713 self.op.instance_name)
1714 self.instance = instance
1717 def Exec(self, feedback_fn):
1718 """Activate the disks.
1721 disks_ok, disks_info = _AssembleInstanceDisks(self.instance, self.cfg)
1723 raise errors.OpExecError("Cannot activate block devices")
1728 def _AssembleInstanceDisks(instance, cfg, ignore_secondaries=False):
1729 """Prepare the block devices for an instance.
1731 This sets up the block devices on all nodes.
1734 instance: a ganeti.objects.Instance object
1735 ignore_secondaries: if true, errors on secondary nodes won't result
1736 in an error return from the function
1739 false if the operation failed
1740 list of (host, instance_visible_name, node_visible_name) if the operation
1741 suceeded with the mapping from node devices to instance devices
1745 for inst_disk in instance.disks:
1746 master_result = None
1747 for node, node_disk in inst_disk.ComputeNodeTree(instance.primary_node):
1748 cfg.SetDiskID(node_disk, node)
1749 is_primary = node == instance.primary_node
1750 result = rpc.call_blockdev_assemble(node, node_disk, is_primary)
1752 logger.Error("could not prepare block device %s on node %s (is_pri"
1753 "mary=%s)" % (inst_disk.iv_name, node, is_primary))
1754 if is_primary or not ignore_secondaries:
1757 master_result = result
1758 device_info.append((instance.primary_node, inst_disk.iv_name,
1761 return disks_ok, device_info
1764 def _StartInstanceDisks(cfg, instance, force):
1765 """Start the disks of an instance.
1768 disks_ok, dummy = _AssembleInstanceDisks(instance, cfg,
1769 ignore_secondaries=force)
1771 _ShutdownInstanceDisks(instance, cfg)
1772 if force is not None and not force:
1773 logger.Error("If the message above refers to a secondary node,"
1774 " you can retry the operation using '--force'.")
1775 raise errors.OpExecError("Disk consistency error")
1778 class LUDeactivateInstanceDisks(NoHooksLU):
1779 """Shutdown an instance's disks.
1782 _OP_REQP = ["instance_name"]
1784 def CheckPrereq(self):
1785 """Check prerequisites.
1787 This checks that the instance is in the cluster.
1790 instance = self.cfg.GetInstanceInfo(
1791 self.cfg.ExpandInstanceName(self.op.instance_name))
1792 if instance is None:
1793 raise errors.OpPrereqError("Instance '%s' not known" %
1794 self.op.instance_name)
1795 self.instance = instance
1797 def Exec(self, feedback_fn):
1798 """Deactivate the disks
1801 instance = self.instance
1802 ins_l = rpc.call_instance_list([instance.primary_node])
1803 ins_l = ins_l[instance.primary_node]
1804 if not type(ins_l) is list:
1805 raise errors.OpExecError("Can't contact node '%s'" %
1806 instance.primary_node)
1808 if self.instance.name in ins_l:
1809 raise errors.OpExecError("Instance is running, can't shutdown"
1812 _ShutdownInstanceDisks(instance, self.cfg)
1815 def _ShutdownInstanceDisks(instance, cfg, ignore_primary=False):
1816 """Shutdown block devices of an instance.
1818 This does the shutdown on all nodes of the instance.
1820 If the ignore_primary is false, errors on the primary node are
1825 for disk in instance.disks:
1826 for node, top_disk in disk.ComputeNodeTree(instance.primary_node):
1827 cfg.SetDiskID(top_disk, node)
1828 if not rpc.call_blockdev_shutdown(node, top_disk):
1829 logger.Error("could not shutdown block device %s on node %s" %
1830 (disk.iv_name, node))
1831 if not ignore_primary or node != instance.primary_node:
1836 class LUStartupInstance(LogicalUnit):
1837 """Starts an instance.
1840 HPATH = "instance-start"
1841 HTYPE = constants.HTYPE_INSTANCE
1842 _OP_REQP = ["instance_name", "force"]
1844 def BuildHooksEnv(self):
1847 This runs on master, primary and secondary nodes of the instance.
1851 "FORCE": self.op.force,
1853 env.update(_BuildInstanceHookEnvByObject(self.instance))
1854 nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] +
1855 list(self.instance.secondary_nodes))
1858 def CheckPrereq(self):
1859 """Check prerequisites.
1861 This checks that the instance is in the cluster.
1864 instance = self.cfg.GetInstanceInfo(
1865 self.cfg.ExpandInstanceName(self.op.instance_name))
1866 if instance is None:
1867 raise errors.OpPrereqError("Instance '%s' not known" %
1868 self.op.instance_name)
1870 # check bridges existance
1871 brlist = [nic.bridge for nic in instance.nics]
1872 if not rpc.call_bridges_exist(instance.primary_node, brlist):
1873 raise errors.OpPrereqError("one or more target bridges %s does not"
1874 " exist on destination node '%s'" %
1875 (brlist, instance.primary_node))
1877 self.instance = instance
1878 self.op.instance_name = instance.name
1880 def Exec(self, feedback_fn):
1881 """Start the instance.
1884 instance = self.instance
1885 force = self.op.force
1886 extra_args = getattr(self.op, "extra_args", "")
1888 node_current = instance.primary_node
1890 nodeinfo = rpc.call_node_info([node_current], self.cfg.GetVGName())
1892 raise errors.OpExecError("Could not contact node %s for infos" %
1895 freememory = nodeinfo[node_current]['memory_free']
1896 memory = instance.memory
1897 if memory > freememory:
1898 raise errors.OpExecError("Not enough memory to start instance"
1900 " needed %s MiB, available %s MiB" %
1901 (instance.name, node_current, memory,
1904 _StartInstanceDisks(self.cfg, instance, force)
1906 if not rpc.call_instance_start(node_current, instance, extra_args):
1907 _ShutdownInstanceDisks(instance, self.cfg)
1908 raise errors.OpExecError("Could not start instance")
1910 self.cfg.MarkInstanceUp(instance.name)
1913 class LUShutdownInstance(LogicalUnit):
1914 """Shutdown an instance.
1917 HPATH = "instance-stop"
1918 HTYPE = constants.HTYPE_INSTANCE
1919 _OP_REQP = ["instance_name"]
1921 def BuildHooksEnv(self):
1924 This runs on master, primary and secondary nodes of the instance.
1927 env = _BuildInstanceHookEnvByObject(self.instance)
1928 nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] +
1929 list(self.instance.secondary_nodes))
1932 def CheckPrereq(self):
1933 """Check prerequisites.
1935 This checks that the instance is in the cluster.
1938 instance = self.cfg.GetInstanceInfo(
1939 self.cfg.ExpandInstanceName(self.op.instance_name))
1940 if instance is None:
1941 raise errors.OpPrereqError("Instance '%s' not known" %
1942 self.op.instance_name)
1943 self.instance = instance
1945 def Exec(self, feedback_fn):
1946 """Shutdown the instance.
1949 instance = self.instance
1950 node_current = instance.primary_node
1951 if not rpc.call_instance_shutdown(node_current, instance):
1952 logger.Error("could not shutdown instance")
1954 self.cfg.MarkInstanceDown(instance.name)
1955 _ShutdownInstanceDisks(instance, self.cfg)
1958 class LUReinstallInstance(LogicalUnit):
1959 """Reinstall an instance.
1962 HPATH = "instance-reinstall"
1963 HTYPE = constants.HTYPE_INSTANCE
1964 _OP_REQP = ["instance_name"]
1966 def BuildHooksEnv(self):
1969 This runs on master, primary and secondary nodes of the instance.
1972 env = _BuildInstanceHookEnvByObject(self.instance)
1973 nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] +
1974 list(self.instance.secondary_nodes))
1977 def CheckPrereq(self):
1978 """Check prerequisites.
1980 This checks that the instance is in the cluster and is not running.
1983 instance = self.cfg.GetInstanceInfo(
1984 self.cfg.ExpandInstanceName(self.op.instance_name))
1985 if instance is None:
1986 raise errors.OpPrereqError("Instance '%s' not known" %
1987 self.op.instance_name)
1988 if instance.disk_template == constants.DT_DISKLESS:
1989 raise errors.OpPrereqError("Instance '%s' has no disks" %
1990 self.op.instance_name)
1991 if instance.status != "down":
1992 raise errors.OpPrereqError("Instance '%s' is marked to be up" %
1993 self.op.instance_name)
1994 remote_info = rpc.call_instance_info(instance.primary_node, instance.name)
1996 raise errors.OpPrereqError("Instance '%s' is running on the node %s" %
1997 (self.op.instance_name,
1998 instance.primary_node))
2000 self.op.os_type = getattr(self.op, "os_type", None)
2001 if self.op.os_type is not None:
2003 pnode = self.cfg.GetNodeInfo(
2004 self.cfg.ExpandNodeName(instance.primary_node))
2006 raise errors.OpPrereqError("Primary node '%s' is unknown" %
2008 os_obj = rpc.call_os_get([pnode.name], self.op.os_type)[pnode.name]
2009 if not isinstance(os_obj, objects.OS):
2010 raise errors.OpPrereqError("OS '%s' not in supported OS list for"
2011 " primary node" % self.op.os_type)
2013 self.instance = instance
2015 def Exec(self, feedback_fn):
2016 """Reinstall the instance.
2019 inst = self.instance
2021 if self.op.os_type is not None:
2022 feedback_fn("Changing OS to '%s'..." % self.op.os_type)
2023 inst.os = self.op.os_type
2024 self.cfg.AddInstance(inst)
2026 _StartInstanceDisks(self.cfg, inst, None)
2028 feedback_fn("Running the instance OS create scripts...")
2029 if not rpc.call_instance_os_add(inst.primary_node, inst, "sda", "sdb"):
2030 raise errors.OpExecError("Could not install OS for instance %s "
2032 (inst.name, inst.primary_node))
2034 _ShutdownInstanceDisks(inst, self.cfg)
2037 class LURemoveInstance(LogicalUnit):
2038 """Remove an instance.
2041 HPATH = "instance-remove"
2042 HTYPE = constants.HTYPE_INSTANCE
2043 _OP_REQP = ["instance_name"]
2045 def BuildHooksEnv(self):
2048 This runs on master, primary and secondary nodes of the instance.
2051 env = _BuildInstanceHookEnvByObject(self.instance)
2052 nl = ([self.sstore.GetMasterNode(), self.instance.primary_node] +
2053 list(self.instance.secondary_nodes))
2056 def CheckPrereq(self):
2057 """Check prerequisites.
2059 This checks that the instance is in the cluster.
2062 instance = self.cfg.GetInstanceInfo(
2063 self.cfg.ExpandInstanceName(self.op.instance_name))
2064 if instance is None:
2065 raise errors.OpPrereqError("Instance '%s' not known" %
2066 self.op.instance_name)
2067 self.instance = instance
2069 def Exec(self, feedback_fn):
2070 """Remove the instance.
2073 instance = self.instance
2074 logger.Info("shutting down instance %s on node %s" %
2075 (instance.name, instance.primary_node))
2077 if not rpc.call_instance_shutdown(instance.primary_node, instance):
2078 raise errors.OpExecError("Could not shutdown instance %s on node %s" %
2079 (instance.name, instance.primary_node))
2081 logger.Info("removing block devices for instance %s" % instance.name)
2083 _RemoveDisks(instance, self.cfg)
2085 logger.Info("removing instance %s out of cluster config" % instance.name)
2087 self.cfg.RemoveInstance(instance.name)
2090 class LUQueryInstances(NoHooksLU):
2091 """Logical unit for querying instances.
2094 _OP_REQP = ["output_fields", "names"]
2096 def CheckPrereq(self):
2097 """Check prerequisites.
2099 This checks that the fields required are valid output fields.
2102 self.dynamic_fields = frozenset(["oper_state", "oper_ram"])
2103 _CheckOutputFields(static=["name", "os", "pnode", "snodes",
2104 "admin_state", "admin_ram",
2105 "disk_template", "ip", "mac", "bridge",
2106 "sda_size", "sdb_size"],
2107 dynamic=self.dynamic_fields,
2108 selected=self.op.output_fields)
2110 self.wanted = _GetWantedInstances(self, self.op.names)
2112 def Exec(self, feedback_fn):
2113 """Computes the list of nodes and their attributes.
2116 instance_names = self.wanted
2117 instance_list = [self.cfg.GetInstanceInfo(iname) for iname
2120 # begin data gathering
2122 nodes = frozenset([inst.primary_node for inst in instance_list])
2125 if self.dynamic_fields.intersection(self.op.output_fields):
2127 node_data = rpc.call_all_instances_info(nodes)
2129 result = node_data[name]
2131 live_data.update(result)
2132 elif result == False:
2133 bad_nodes.append(name)
2134 # else no instance is alive
2136 live_data = dict([(name, {}) for name in instance_names])
2138 # end data gathering
2141 for instance in instance_list:
2143 for field in self.op.output_fields:
2148 elif field == "pnode":
2149 val = instance.primary_node
2150 elif field == "snodes":
2151 val = list(instance.secondary_nodes)
2152 elif field == "admin_state":
2153 val = (instance.status != "down")
2154 elif field == "oper_state":
2155 if instance.primary_node in bad_nodes:
2158 val = bool(live_data.get(instance.name))
2159 elif field == "admin_ram":
2160 val = instance.memory
2161 elif field == "oper_ram":
2162 if instance.primary_node in bad_nodes:
2164 elif instance.name in live_data:
2165 val = live_data[instance.name].get("memory", "?")
2168 elif field == "disk_template":
2169 val = instance.disk_template
2171 val = instance.nics[0].ip
2172 elif field == "bridge":
2173 val = instance.nics[0].bridge
2174 elif field == "mac":
2175 val = instance.nics[0].mac
2176 elif field == "sda_size" or field == "sdb_size":
2177 disk = instance.FindDisk(field[:3])
2183 raise errors.ParameterError(field)
2190 class LUFailoverInstance(LogicalUnit):
2191 """Failover an instance.
2194 HPATH = "instance-failover"
2195 HTYPE = constants.HTYPE_INSTANCE
2196 _OP_REQP = ["instance_name", "ignore_consistency"]
2198 def BuildHooksEnv(self):
2201 This runs on master, primary and secondary nodes of the instance.
2205 "IGNORE_CONSISTENCY": self.op.ignore_consistency,
2207 env.update(_BuildInstanceHookEnvByObject(self.instance))
2208 nl = [self.sstore.GetMasterNode()] + list(self.instance.secondary_nodes)
2211 def CheckPrereq(self):
2212 """Check prerequisites.
2214 This checks that the instance is in the cluster.
2217 instance = self.cfg.GetInstanceInfo(
2218 self.cfg.ExpandInstanceName(self.op.instance_name))
2219 if instance is None:
2220 raise errors.OpPrereqError("Instance '%s' not known" %
2221 self.op.instance_name)
2223 if instance.disk_template != constants.DT_REMOTE_RAID1:
2224 raise errors.OpPrereqError("Instance's disk layout is not"
2227 secondary_nodes = instance.secondary_nodes
2228 if not secondary_nodes:
2229 raise errors.ProgrammerError("no secondary node but using "
2230 "DT_REMOTE_RAID1 template")
2232 # check memory requirements on the secondary node
2233 target_node = secondary_nodes[0]
2234 nodeinfo = rpc.call_node_info([target_node], self.cfg.GetVGName())
2235 info = nodeinfo.get(target_node, None)
2237 raise errors.OpPrereqError("Cannot get current information"
2238 " from node '%s'" % nodeinfo)
2239 if instance.memory > info['memory_free']:
2240 raise errors.OpPrereqError("Not enough memory on target node %s."
2241 " %d MB available, %d MB required" %
2242 (target_node, info['memory_free'],
2245 # check bridge existance
2246 brlist = [nic.bridge for nic in instance.nics]
2247 if not rpc.call_bridges_exist(instance.primary_node, brlist):
2248 raise errors.OpPrereqError("One or more target bridges %s does not"
2249 " exist on destination node '%s'" %
2250 (brlist, instance.primary_node))
2252 self.instance = instance
2254 def Exec(self, feedback_fn):
2255 """Failover an instance.
2257 The failover is done by shutting it down on its present node and
2258 starting it on the secondary.
2261 instance = self.instance
2263 source_node = instance.primary_node
2264 target_node = instance.secondary_nodes[0]
2266 feedback_fn("* checking disk consistency between source and target")
2267 for dev in instance.disks:
2268 # for remote_raid1, these are md over drbd
2269 if not _CheckDiskConsistency(self.cfg, dev, target_node, False):
2270 if not self.op.ignore_consistency:
2271 raise errors.OpExecError("Disk %s is degraded on target node,"
2272 " aborting failover." % dev.iv_name)
2274 feedback_fn("* checking target node resource availability")
2275 nodeinfo = rpc.call_node_info([target_node], self.cfg.GetVGName())
2278 raise errors.OpExecError("Could not contact target node %s." %
2281 free_memory = int(nodeinfo[target_node]['memory_free'])
2282 memory = instance.memory
2283 if memory > free_memory:
2284 raise errors.OpExecError("Not enough memory to create instance %s on"
2285 " node %s. needed %s MiB, available %s MiB" %
2286 (instance.name, target_node, memory,
2289 feedback_fn("* shutting down instance on source node")
2290 logger.Info("Shutting down instance %s on node %s" %
2291 (instance.name, source_node))
2293 if not rpc.call_instance_shutdown(source_node, instance):
2294 logger.Error("Could not shutdown instance %s on node %s. Proceeding"
2295 " anyway. Please make sure node %s is down" %
2296 (instance.name, source_node, source_node))
2298 feedback_fn("* deactivating the instance's disks on source node")
2299 if not _ShutdownInstanceDisks(instance, self.cfg, ignore_primary=True):
2300 raise errors.OpExecError("Can't shut down the instance's disks.")
2302 instance.primary_node = target_node
2303 # distribute new instance config to the other nodes
2304 self.cfg.AddInstance(instance)
2306 feedback_fn("* activating the instance's disks on target node")
2307 logger.Info("Starting instance %s on node %s" %
2308 (instance.name, target_node))
2310 disks_ok, dummy = _AssembleInstanceDisks(instance, self.cfg,
2311 ignore_secondaries=True)
2313 _ShutdownInstanceDisks(instance, self.cfg)
2314 raise errors.OpExecError("Can't activate the instance's disks")
2316 feedback_fn("* starting the instance on the target node")
2317 if not rpc.call_instance_start(target_node, instance, None):
2318 _ShutdownInstanceDisks(instance, self.cfg)
2319 raise errors.OpExecError("Could not start instance %s on node %s." %
2320 (instance.name, target_node))
2323 def _CreateBlockDevOnPrimary(cfg, node, device, info):
2324 """Create a tree of block devices on the primary node.
2326 This always creates all devices.
2330 for child in device.children:
2331 if not _CreateBlockDevOnPrimary(cfg, node, child, info):
2334 cfg.SetDiskID(device, node)
2335 new_id = rpc.call_blockdev_create(node, device, device.size, True, info)
2338 if device.physical_id is None:
2339 device.physical_id = new_id
2343 def _CreateBlockDevOnSecondary(cfg, node, device, force, info):
2344 """Create a tree of block devices on a secondary node.
2346 If this device type has to be created on secondaries, create it and
2349 If not, just recurse to children keeping the same 'force' value.
2352 if device.CreateOnSecondary():
2355 for child in device.children:
2356 if not _CreateBlockDevOnSecondary(cfg, node, child, force, info):
2361 cfg.SetDiskID(device, node)
2362 new_id = rpc.call_blockdev_create(node, device, device.size, False, info)
2365 if device.physical_id is None:
2366 device.physical_id = new_id
2370 def _GenerateUniqueNames(cfg, exts):
2371 """Generate a suitable LV name.
2373 This will generate a logical volume name for the given instance.
2378 new_id = cfg.GenerateUniqueID()
2379 results.append("%s%s" % (new_id, val))
2383 def _GenerateMDDRBDBranch(cfg, primary, secondary, size, names):
2384 """Generate a drbd device complete with its children.
2387 port = cfg.AllocatePort()
2388 vgname = cfg.GetVGName()
2389 dev_data = objects.Disk(dev_type="lvm", size=size,
2390 logical_id=(vgname, names[0]))
2391 dev_meta = objects.Disk(dev_type="lvm", size=128,
2392 logical_id=(vgname, names[1]))
2393 drbd_dev = objects.Disk(dev_type="drbd", size=size,
2394 logical_id = (primary, secondary, port),
2395 children = [dev_data, dev_meta])
2399 def _GenerateDiskTemplate(cfg, template_name,
2400 instance_name, primary_node,
2401 secondary_nodes, disk_sz, swap_sz):
2402 """Generate the entire disk layout for a given template type.
2405 #TODO: compute space requirements
2407 vgname = cfg.GetVGName()
2408 if template_name == "diskless":
2410 elif template_name == "plain":
2411 if len(secondary_nodes) != 0:
2412 raise errors.ProgrammerError("Wrong template configuration")
2414 names = _GenerateUniqueNames(cfg, [".sda", ".sdb"])
2415 sda_dev = objects.Disk(dev_type="lvm", size=disk_sz,
2416 logical_id=(vgname, names[0]),
2418 sdb_dev = objects.Disk(dev_type="lvm", size=swap_sz,
2419 logical_id=(vgname, names[1]),
2421 disks = [sda_dev, sdb_dev]
2422 elif template_name == "local_raid1":
2423 if len(secondary_nodes) != 0:
2424 raise errors.ProgrammerError("Wrong template configuration")
2427 names = _GenerateUniqueNames(cfg, [".sda_m1", ".sda_m2",
2428 ".sdb_m1", ".sdb_m2"])
2429 sda_dev_m1 = objects.Disk(dev_type="lvm", size=disk_sz,
2430 logical_id=(vgname, names[0]))
2431 sda_dev_m2 = objects.Disk(dev_type="lvm", size=disk_sz,
2432 logical_id=(vgname, names[1]))
2433 md_sda_dev = objects.Disk(dev_type="md_raid1", iv_name = "sda",
2435 children = [sda_dev_m1, sda_dev_m2])
2436 sdb_dev_m1 = objects.Disk(dev_type="lvm", size=swap_sz,
2437 logical_id=(vgname, names[2]))
2438 sdb_dev_m2 = objects.Disk(dev_type="lvm", size=swap_sz,
2439 logical_id=(vgname, names[3]))
2440 md_sdb_dev = objects.Disk(dev_type="md_raid1", iv_name = "sdb",
2442 children = [sdb_dev_m1, sdb_dev_m2])
2443 disks = [md_sda_dev, md_sdb_dev]
2444 elif template_name == constants.DT_REMOTE_RAID1:
2445 if len(secondary_nodes) != 1:
2446 raise errors.ProgrammerError("Wrong template configuration")
2447 remote_node = secondary_nodes[0]
2448 names = _GenerateUniqueNames(cfg, [".sda_data", ".sda_meta",
2449 ".sdb_data", ".sdb_meta"])
2450 drbd_sda_dev = _GenerateMDDRBDBranch(cfg, primary_node, remote_node,
2451 disk_sz, names[0:2])
2452 md_sda_dev = objects.Disk(dev_type="md_raid1", iv_name="sda",
2453 children = [drbd_sda_dev], size=disk_sz)
2454 drbd_sdb_dev = _GenerateMDDRBDBranch(cfg, primary_node, remote_node,
2455 swap_sz, names[2:4])
2456 md_sdb_dev = objects.Disk(dev_type="md_raid1", iv_name="sdb",
2457 children = [drbd_sdb_dev], size=swap_sz)
2458 disks = [md_sda_dev, md_sdb_dev]
2460 raise errors.ProgrammerError("Invalid disk template '%s'" % template_name)
2464 def _GetInstanceInfoText(instance):
2465 """Compute that text that should be added to the disk's metadata.
2468 return "originstname+%s" % instance.name
2471 def _CreateDisks(cfg, instance):
2472 """Create all disks for an instance.
2474 This abstracts away some work from AddInstance.
2477 instance: the instance object
2480 True or False showing the success of the creation process
2483 info = _GetInstanceInfoText(instance)
2485 for device in instance.disks:
2486 logger.Info("creating volume %s for instance %s" %
2487 (device.iv_name, instance.name))
2489 for secondary_node in instance.secondary_nodes:
2490 if not _CreateBlockDevOnSecondary(cfg, secondary_node, device, False,
2492 logger.Error("failed to create volume %s (%s) on secondary node %s!" %
2493 (device.iv_name, device, secondary_node))
2496 if not _CreateBlockDevOnPrimary(cfg, instance.primary_node, device, info):
2497 logger.Error("failed to create volume %s on primary!" %
2503 def _RemoveDisks(instance, cfg):
2504 """Remove all disks for an instance.
2506 This abstracts away some work from `AddInstance()` and
2507 `RemoveInstance()`. Note that in case some of the devices couldn't
2508 be remove, the removal will continue with the other ones (compare
2509 with `_CreateDisks()`).
2512 instance: the instance object
2515 True or False showing the success of the removal proces
2518 logger.Info("removing block devices for instance %s" % instance.name)
2521 for device in instance.disks:
2522 for node, disk in device.ComputeNodeTree(instance.primary_node):
2523 cfg.SetDiskID(disk, node)
2524 if not rpc.call_blockdev_remove(node, disk):
2525 logger.Error("could not remove block device %s on node %s,"
2526 " continuing anyway" %
2527 (device.iv_name, node))
2532 class LUCreateInstance(LogicalUnit):
2533 """Create an instance.
2536 HPATH = "instance-add"
2537 HTYPE = constants.HTYPE_INSTANCE
2538 _OP_REQP = ["instance_name", "mem_size", "disk_size", "pnode",
2539 "disk_template", "swap_size", "mode", "start", "vcpus",
2542 def BuildHooksEnv(self):
2545 This runs on master, primary and secondary nodes of the instance.
2549 "INSTANCE_DISK_TEMPLATE": self.op.disk_template,
2550 "INSTANCE_DISK_SIZE": self.op.disk_size,
2551 "INSTANCE_SWAP_SIZE": self.op.swap_size,
2552 "INSTANCE_ADD_MODE": self.op.mode,
2554 if self.op.mode == constants.INSTANCE_IMPORT:
2555 env["INSTANCE_SRC_NODE"] = self.op.src_node
2556 env["INSTANCE_SRC_PATH"] = self.op.src_path
2557 env["INSTANCE_SRC_IMAGE"] = self.src_image
2559 env.update(_BuildInstanceHookEnv(name=self.op.instance_name,
2560 primary_node=self.op.pnode,
2561 secondary_nodes=self.secondaries,
2562 status=self.instance_status,
2563 os_type=self.op.os_type,
2564 memory=self.op.mem_size,
2565 vcpus=self.op.vcpus,
2566 nics=[(self.inst_ip, self.op.bridge)],
2569 nl = ([self.sstore.GetMasterNode(), self.op.pnode] +
2574 def CheckPrereq(self):
2575 """Check prerequisites.
2578 if self.op.mode not in (constants.INSTANCE_CREATE,
2579 constants.INSTANCE_IMPORT):
2580 raise errors.OpPrereqError("Invalid instance creation mode '%s'" %
2583 if self.op.mode == constants.INSTANCE_IMPORT:
2584 src_node = getattr(self.op, "src_node", None)
2585 src_path = getattr(self.op, "src_path", None)
2586 if src_node is None or src_path is None:
2587 raise errors.OpPrereqError("Importing an instance requires source"
2588 " node and path options")
2589 src_node_full = self.cfg.ExpandNodeName(src_node)
2590 if src_node_full is None:
2591 raise errors.OpPrereqError("Unknown source node '%s'" % src_node)
2592 self.op.src_node = src_node = src_node_full
2594 if not os.path.isabs(src_path):
2595 raise errors.OpPrereqError("The source path must be absolute")
2597 export_info = rpc.call_export_info(src_node, src_path)
2600 raise errors.OpPrereqError("No export found in dir %s" % src_path)
2602 if not export_info.has_section(constants.INISECT_EXP):
2603 raise errors.ProgrammerError("Corrupted export config")
2605 ei_version = export_info.get(constants.INISECT_EXP, 'version')
2606 if (int(ei_version) != constants.EXPORT_VERSION):
2607 raise errors.OpPrereqError("Wrong export version %s (wanted %d)" %
2608 (ei_version, constants.EXPORT_VERSION))
2610 if int(export_info.get(constants.INISECT_INS, 'disk_count')) > 1:
2611 raise errors.OpPrereqError("Can't import instance with more than"
2614 # FIXME: are the old os-es, disk sizes, etc. useful?
2615 self.op.os_type = export_info.get(constants.INISECT_EXP, 'os')
2616 diskimage = os.path.join(src_path, export_info.get(constants.INISECT_INS,
2618 self.src_image = diskimage
2619 else: # INSTANCE_CREATE
2620 if getattr(self.op, "os_type", None) is None:
2621 raise errors.OpPrereqError("No guest OS specified")
2623 # check primary node
2624 pnode = self.cfg.GetNodeInfo(self.cfg.ExpandNodeName(self.op.pnode))
2626 raise errors.OpPrereqError("Primary node '%s' is unknown" %
2628 self.op.pnode = pnode.name
2630 self.secondaries = []
2631 # disk template and mirror node verification
2632 if self.op.disk_template not in constants.DISK_TEMPLATES:
2633 raise errors.OpPrereqError("Invalid disk template name")
2635 if self.op.disk_template == constants.DT_REMOTE_RAID1:
2636 if getattr(self.op, "snode", None) is None:
2637 raise errors.OpPrereqError("The 'remote_raid1' disk template needs"
2640 snode_name = self.cfg.ExpandNodeName(self.op.snode)
2641 if snode_name is None:
2642 raise errors.OpPrereqError("Unknown secondary node '%s'" %
2644 elif snode_name == pnode.name:
2645 raise errors.OpPrereqError("The secondary node cannot be"
2646 " the primary node.")
2647 self.secondaries.append(snode_name)
2649 # Check lv size requirements
2650 nodenames = [pnode.name] + self.secondaries
2651 nodeinfo = rpc.call_node_info(nodenames, self.cfg.GetVGName())
2653 # Required free disk space as a function of disk and swap space
2655 constants.DT_DISKLESS: 0,
2656 constants.DT_PLAIN: self.op.disk_size + self.op.swap_size,
2657 constants.DT_LOCAL_RAID1: (self.op.disk_size + self.op.swap_size) * 2,
2658 # 256 MB are added for drbd metadata, 128MB for each drbd device
2659 constants.DT_REMOTE_RAID1: self.op.disk_size + self.op.swap_size + 256,
2662 if self.op.disk_template not in req_size_dict:
2663 raise errors.ProgrammerError("Disk template '%s' size requirement"
2664 " is unknown" % self.op.disk_template)
2666 req_size = req_size_dict[self.op.disk_template]
2668 for node in nodenames:
2669 info = nodeinfo.get(node, None)
2671 raise errors.OpPrereqError("Cannot get current information"
2672 " from node '%s'" % nodeinfo)
2673 if req_size > info['vg_free']:
2674 raise errors.OpPrereqError("Not enough disk space on target node %s."
2675 " %d MB available, %d MB required" %
2676 (node, info['vg_free'], req_size))
2679 os_obj = rpc.call_os_get([pnode.name], self.op.os_type)[pnode.name]
2680 if not isinstance(os_obj, objects.OS):
2681 raise errors.OpPrereqError("OS '%s' not in supported os list for"
2682 " primary node" % self.op.os_type)
2684 # instance verification
2685 hostname1 = utils.LookupHostname(self.op.instance_name)
2687 raise errors.OpPrereqError("Instance name '%s' not found in dns" %
2688 self.op.instance_name)
2690 self.op.instance_name = instance_name = hostname1['hostname']
2691 instance_list = self.cfg.GetInstanceList()
2692 if instance_name in instance_list:
2693 raise errors.OpPrereqError("Instance '%s' is already in the cluster" %
2696 ip = getattr(self.op, "ip", None)
2697 if ip is None or ip.lower() == "none":
2699 elif ip.lower() == "auto":
2700 inst_ip = hostname1['ip']
2702 if not utils.IsValidIP(ip):
2703 raise errors.OpPrereqError("given IP address '%s' doesn't look"
2704 " like a valid IP" % ip)
2706 self.inst_ip = inst_ip
2708 command = ["fping", "-q", hostname1['ip']]
2709 result = utils.RunCmd(command)
2710 if not result.failed:
2711 raise errors.OpPrereqError("IP %s of instance %s already in use" %
2712 (hostname1['ip'], instance_name))
2714 # bridge verification
2715 bridge = getattr(self.op, "bridge", None)
2717 self.op.bridge = self.cfg.GetDefBridge()
2719 self.op.bridge = bridge
2721 if not rpc.call_bridges_exist(self.pnode.name, [self.op.bridge]):
2722 raise errors.OpPrereqError("target bridge '%s' does not exist on"
2723 " destination node '%s'" %
2724 (self.op.bridge, pnode.name))
2727 self.instance_status = 'up'
2729 self.instance_status = 'down'
2731 def Exec(self, feedback_fn):
2732 """Create and add the instance to the cluster.
2735 instance = self.op.instance_name
2736 pnode_name = self.pnode.name
2738 nic = objects.NIC(bridge=self.op.bridge, mac=self.cfg.GenerateMAC())
2739 if self.inst_ip is not None:
2740 nic.ip = self.inst_ip
2742 disks = _GenerateDiskTemplate(self.cfg,
2743 self.op.disk_template,
2744 instance, pnode_name,
2745 self.secondaries, self.op.disk_size,
2748 iobj = objects.Instance(name=instance, os=self.op.os_type,
2749 primary_node=pnode_name,
2750 memory=self.op.mem_size,
2751 vcpus=self.op.vcpus,
2752 nics=[nic], disks=disks,
2753 disk_template=self.op.disk_template,
2754 status=self.instance_status,
2757 feedback_fn("* creating instance disks...")
2758 if not _CreateDisks(self.cfg, iobj):
2759 _RemoveDisks(iobj, self.cfg)
2760 raise errors.OpExecError("Device creation failed, reverting...")
2762 feedback_fn("adding instance %s to cluster config" % instance)
2764 self.cfg.AddInstance(iobj)
2766 if self.op.wait_for_sync:
2767 disk_abort = not _WaitForSync(self.cfg, iobj)
2768 elif iobj.disk_template == constants.DT_REMOTE_RAID1:
2769 # make sure the disks are not degraded (still sync-ing is ok)
2771 feedback_fn("* checking mirrors status")
2772 disk_abort = not _WaitForSync(self.cfg, iobj, oneshot=True)
2777 _RemoveDisks(iobj, self.cfg)
2778 self.cfg.RemoveInstance(iobj.name)
2779 raise errors.OpExecError("There are some degraded disks for"
2782 feedback_fn("creating os for instance %s on node %s" %
2783 (instance, pnode_name))
2785 if iobj.disk_template != constants.DT_DISKLESS:
2786 if self.op.mode == constants.INSTANCE_CREATE:
2787 feedback_fn("* running the instance OS create scripts...")
2788 if not rpc.call_instance_os_add(pnode_name, iobj, "sda", "sdb"):
2789 raise errors.OpExecError("could not add os for instance %s"
2791 (instance, pnode_name))
2793 elif self.op.mode == constants.INSTANCE_IMPORT:
2794 feedback_fn("* running the instance OS import scripts...")
2795 src_node = self.op.src_node
2796 src_image = self.src_image
2797 if not rpc.call_instance_os_import(pnode_name, iobj, "sda", "sdb",
2798 src_node, src_image):
2799 raise errors.OpExecError("Could not import os for instance"
2801 (instance, pnode_name))
2803 # also checked in the prereq part
2804 raise errors.ProgrammerError("Unknown OS initialization mode '%s'"
2808 logger.Info("starting instance %s on node %s" % (instance, pnode_name))
2809 feedback_fn("* starting instance...")
2810 if not rpc.call_instance_start(pnode_name, iobj, None):
2811 raise errors.OpExecError("Could not start instance")
2814 class LUConnectConsole(NoHooksLU):
2815 """Connect to an instance's console.
2817 This is somewhat special in that it returns the command line that
2818 you need to run on the master node in order to connect to the
2822 _OP_REQP = ["instance_name"]
2824 def CheckPrereq(self):
2825 """Check prerequisites.
2827 This checks that the instance is in the cluster.
2830 instance = self.cfg.GetInstanceInfo(
2831 self.cfg.ExpandInstanceName(self.op.instance_name))
2832 if instance is None:
2833 raise errors.OpPrereqError("Instance '%s' not known" %
2834 self.op.instance_name)
2835 self.instance = instance
2837 def Exec(self, feedback_fn):
2838 """Connect to the console of an instance
2841 instance = self.instance
2842 node = instance.primary_node
2844 node_insts = rpc.call_instance_list([node])[node]
2845 if node_insts is False:
2846 raise errors.OpExecError("Can't connect to node %s." % node)
2848 if instance.name not in node_insts:
2849 raise errors.OpExecError("Instance %s is not running." % instance.name)
2851 logger.Debug("connecting to console of %s on %s" % (instance.name, node))
2853 hyper = hypervisor.GetHypervisor()
2854 console_cmd = hyper.GetShellCommandForConsole(instance.name)
2856 argv = ["ssh", "-q", "-t"]
2857 argv.extend(ssh.KNOWN_HOSTS_OPTS)
2858 argv.extend(ssh.BATCH_MODE_OPTS)
2860 argv.append(console_cmd)
2864 class LUAddMDDRBDComponent(LogicalUnit):
2865 """Adda new mirror member to an instance's disk.
2868 HPATH = "mirror-add"
2869 HTYPE = constants.HTYPE_INSTANCE
2870 _OP_REQP = ["instance_name", "remote_node", "disk_name"]
2872 def BuildHooksEnv(self):
2875 This runs on the master, the primary and all the secondaries.
2879 "NEW_SECONDARY": self.op.remote_node,
2880 "DISK_NAME": self.op.disk_name,
2882 env.update(_BuildInstanceHookEnvByObject(self.instance))
2883 nl = [self.sstore.GetMasterNode(), self.instance.primary_node,
2884 self.op.remote_node,] + list(self.instance.secondary_nodes)
2887 def CheckPrereq(self):
2888 """Check prerequisites.
2890 This checks that the instance is in the cluster.
2893 instance = self.cfg.GetInstanceInfo(
2894 self.cfg.ExpandInstanceName(self.op.instance_name))
2895 if instance is None:
2896 raise errors.OpPrereqError("Instance '%s' not known" %
2897 self.op.instance_name)
2898 self.instance = instance
2900 remote_node = self.cfg.ExpandNodeName(self.op.remote_node)
2901 if remote_node is None:
2902 raise errors.OpPrereqError("Node '%s' not known" % self.op.remote_node)
2903 self.remote_node = remote_node
2905 if remote_node == instance.primary_node:
2906 raise errors.OpPrereqError("The specified node is the primary node of"
2909 if instance.disk_template != constants.DT_REMOTE_RAID1:
2910 raise errors.OpPrereqError("Instance's disk layout is not"
2912 for disk in instance.disks:
2913 if disk.iv_name == self.op.disk_name:
2916 raise errors.OpPrereqError("Can't find this device ('%s') in the"
2917 " instance." % self.op.disk_name)
2918 if len(disk.children) > 1:
2919 raise errors.OpPrereqError("The device already has two slave"
2921 "This would create a 3-disk raid1"
2922 " which we don't allow.")
2925 def Exec(self, feedback_fn):
2926 """Add the mirror component
2930 instance = self.instance
2932 remote_node = self.remote_node
2933 lv_names = [".%s_%s" % (disk.iv_name, suf) for suf in ["data", "meta"]]
2934 names = _GenerateUniqueNames(self.cfg, lv_names)
2935 new_drbd = _GenerateMDDRBDBranch(self.cfg, instance.primary_node,
2936 remote_node, disk.size, names)
2938 logger.Info("adding new mirror component on secondary")
2940 if not _CreateBlockDevOnSecondary(self.cfg, remote_node, new_drbd, False,
2941 _GetInstanceInfoText(instance)):
2942 raise errors.OpExecError("Failed to create new component on secondary"
2943 " node %s" % remote_node)
2945 logger.Info("adding new mirror component on primary")
2947 if not _CreateBlockDevOnPrimary(self.cfg, instance.primary_node, new_drbd,
2948 _GetInstanceInfoText(instance)):
2949 # remove secondary dev
2950 self.cfg.SetDiskID(new_drbd, remote_node)
2951 rpc.call_blockdev_remove(remote_node, new_drbd)
2952 raise errors.OpExecError("Failed to create volume on primary")
2954 # the device exists now
2955 # call the primary node to add the mirror to md
2956 logger.Info("adding new mirror component to md")
2957 if not rpc.call_blockdev_addchild(instance.primary_node,
2959 logger.Error("Can't add mirror compoment to md!")
2960 self.cfg.SetDiskID(new_drbd, remote_node)
2961 if not rpc.call_blockdev_remove(remote_node, new_drbd):
2962 logger.Error("Can't rollback on secondary")
2963 self.cfg.SetDiskID(new_drbd, instance.primary_node)
2964 if not rpc.call_blockdev_remove(instance.primary_node, new_drbd):
2965 logger.Error("Can't rollback on primary")
2966 raise errors.OpExecError("Can't add mirror component to md array")
2968 disk.children.append(new_drbd)
2970 self.cfg.AddInstance(instance)
2972 _WaitForSync(self.cfg, instance)
2977 class LURemoveMDDRBDComponent(LogicalUnit):
2978 """Remove a component from a remote_raid1 disk.
2981 HPATH = "mirror-remove"
2982 HTYPE = constants.HTYPE_INSTANCE
2983 _OP_REQP = ["instance_name", "disk_name", "disk_id"]
2985 def BuildHooksEnv(self):
2988 This runs on the master, the primary and all the secondaries.
2992 "DISK_NAME": self.op.disk_name,
2993 "DISK_ID": self.op.disk_id,
2994 "OLD_SECONDARY": self.old_secondary,
2996 env.update(_BuildInstanceHookEnvByObject(self.instance))
2997 nl = [self.sstore.GetMasterNode(),
2998 self.instance.primary_node] + list(self.instance.secondary_nodes)
3001 def CheckPrereq(self):
3002 """Check prerequisites.
3004 This checks that the instance is in the cluster.
3007 instance = self.cfg.GetInstanceInfo(
3008 self.cfg.ExpandInstanceName(self.op.instance_name))
3009 if instance is None:
3010 raise errors.OpPrereqError("Instance '%s' not known" %
3011 self.op.instance_name)
3012 self.instance = instance
3014 if instance.disk_template != constants.DT_REMOTE_RAID1:
3015 raise errors.OpPrereqError("Instance's disk layout is not"
3017 for disk in instance.disks:
3018 if disk.iv_name == self.op.disk_name:
3021 raise errors.OpPrereqError("Can't find this device ('%s') in the"
3022 " instance." % self.op.disk_name)
3023 for child in disk.children:
3024 if child.dev_type == "drbd" and child.logical_id[2] == self.op.disk_id:
3027 raise errors.OpPrereqError("Can't find the device with this port.")
3029 if len(disk.children) < 2:
3030 raise errors.OpPrereqError("Cannot remove the last component from"
3034 if self.child.logical_id[0] == instance.primary_node:
3038 self.old_secondary = self.child.logical_id[oid]
3040 def Exec(self, feedback_fn):
3041 """Remove the mirror component
3044 instance = self.instance
3047 logger.Info("remove mirror component")
3048 self.cfg.SetDiskID(disk, instance.primary_node)
3049 if not rpc.call_blockdev_removechild(instance.primary_node,
3051 raise errors.OpExecError("Can't remove child from mirror.")
3053 for node in child.logical_id[:2]:
3054 self.cfg.SetDiskID(child, node)
3055 if not rpc.call_blockdev_remove(node, child):
3056 logger.Error("Warning: failed to remove device from node %s,"
3057 " continuing operation." % node)
3059 disk.children.remove(child)
3060 self.cfg.AddInstance(instance)
3063 class LUReplaceDisks(LogicalUnit):
3064 """Replace the disks of an instance.
3067 HPATH = "mirrors-replace"
3068 HTYPE = constants.HTYPE_INSTANCE
3069 _OP_REQP = ["instance_name"]
3071 def BuildHooksEnv(self):
3074 This runs on the master, the primary and all the secondaries.
3078 "NEW_SECONDARY": self.op.remote_node,
3079 "OLD_SECONDARY": self.instance.secondary_nodes[0],
3081 env.update(_BuildInstanceHookEnvByObject(self.instance))
3082 nl = [self.sstore.GetMasterNode(),
3083 self.instance.primary_node] + list(self.instance.secondary_nodes)
3086 def CheckPrereq(self):
3087 """Check prerequisites.
3089 This checks that the instance is in the cluster.
3092 instance = self.cfg.GetInstanceInfo(
3093 self.cfg.ExpandInstanceName(self.op.instance_name))
3094 if instance is None:
3095 raise errors.OpPrereqError("Instance '%s' not known" %
3096 self.op.instance_name)
3097 self.instance = instance
3099 if instance.disk_template != constants.DT_REMOTE_RAID1:
3100 raise errors.OpPrereqError("Instance's disk layout is not"
3103 if len(instance.secondary_nodes) != 1:
3104 raise errors.OpPrereqError("The instance has a strange layout,"
3105 " expected one secondary but found %d" %
3106 len(instance.secondary_nodes))
3108 remote_node = getattr(self.op, "remote_node", None)
3109 if remote_node is None:
3110 remote_node = instance.secondary_nodes[0]
3112 remote_node = self.cfg.ExpandNodeName(remote_node)
3113 if remote_node is None:
3114 raise errors.OpPrereqError("Node '%s' not known" %
3115 self.op.remote_node)
3116 if remote_node == instance.primary_node:
3117 raise errors.OpPrereqError("The specified node is the primary node of"
3119 self.op.remote_node = remote_node
3121 def Exec(self, feedback_fn):
3122 """Replace the disks of an instance.
3125 instance = self.instance
3128 remote_node = self.op.remote_node
3130 for dev in instance.disks:
3132 lv_names = [".%s_%s" % (dev.iv_name, suf) for suf in ["data", "meta"]]
3133 names = _GenerateUniqueNames(cfg, lv_names)
3134 new_drbd = _GenerateMDDRBDBranch(cfg, instance.primary_node,
3135 remote_node, size, names)
3136 iv_names[dev.iv_name] = (dev, dev.children[0], new_drbd)
3137 logger.Info("adding new mirror component on secondary for %s" %
3140 if not _CreateBlockDevOnSecondary(cfg, remote_node, new_drbd, False,
3141 _GetInstanceInfoText(instance)):
3142 raise errors.OpExecError("Failed to create new component on"
3143 " secondary node %s\n"
3144 "Full abort, cleanup manually!" %
3147 logger.Info("adding new mirror component on primary")
3149 if not _CreateBlockDevOnPrimary(cfg, instance.primary_node, new_drbd,
3150 _GetInstanceInfoText(instance)):
3151 # remove secondary dev
3152 cfg.SetDiskID(new_drbd, remote_node)
3153 rpc.call_blockdev_remove(remote_node, new_drbd)
3154 raise errors.OpExecError("Failed to create volume on primary!\n"
3155 "Full abort, cleanup manually!!")
3157 # the device exists now
3158 # call the primary node to add the mirror to md
3159 logger.Info("adding new mirror component to md")
3160 if not rpc.call_blockdev_addchild(instance.primary_node, dev,
3162 logger.Error("Can't add mirror compoment to md!")
3163 cfg.SetDiskID(new_drbd, remote_node)
3164 if not rpc.call_blockdev_remove(remote_node, new_drbd):
3165 logger.Error("Can't rollback on secondary")
3166 cfg.SetDiskID(new_drbd, instance.primary_node)
3167 if not rpc.call_blockdev_remove(instance.primary_node, new_drbd):
3168 logger.Error("Can't rollback on primary")
3169 raise errors.OpExecError("Full abort, cleanup manually!!")
3171 dev.children.append(new_drbd)
3172 cfg.AddInstance(instance)
3174 # this can fail as the old devices are degraded and _WaitForSync
3175 # does a combined result over all disks, so we don't check its
3177 _WaitForSync(cfg, instance, unlock=True)
3179 # so check manually all the devices
3180 for name in iv_names:
3181 dev, child, new_drbd = iv_names[name]
3182 cfg.SetDiskID(dev, instance.primary_node)
3183 is_degr = rpc.call_blockdev_find(instance.primary_node, dev)[5]
3185 raise errors.OpExecError("MD device %s is degraded!" % name)
3186 cfg.SetDiskID(new_drbd, instance.primary_node)
3187 is_degr = rpc.call_blockdev_find(instance.primary_node, new_drbd)[5]
3189 raise errors.OpExecError("New drbd device %s is degraded!" % name)
3191 for name in iv_names:
3192 dev, child, new_drbd = iv_names[name]
3193 logger.Info("remove mirror %s component" % name)
3194 cfg.SetDiskID(dev, instance.primary_node)
3195 if not rpc.call_blockdev_removechild(instance.primary_node,
3197 logger.Error("Can't remove child from mirror, aborting"
3198 " *this device cleanup*.\nYou need to cleanup manually!!")
3201 for node in child.logical_id[:2]:
3202 logger.Info("remove child device on %s" % node)
3203 cfg.SetDiskID(child, node)
3204 if not rpc.call_blockdev_remove(node, child):
3205 logger.Error("Warning: failed to remove device from node %s,"
3206 " continuing operation." % node)
3208 dev.children.remove(child)
3210 cfg.AddInstance(instance)
3213 class LUQueryInstanceData(NoHooksLU):
3214 """Query runtime instance data.
3217 _OP_REQP = ["instances"]
3219 def CheckPrereq(self):
3220 """Check prerequisites.
3222 This only checks the optional instance list against the existing names.
3225 if not isinstance(self.op.instances, list):
3226 raise errors.OpPrereqError("Invalid argument type 'instances'")
3227 if self.op.instances:
3228 self.wanted_instances = []
3229 names = self.op.instances
3231 instance = self.cfg.GetInstanceInfo(self.cfg.ExpandInstanceName(name))
3232 if instance is None:
3233 raise errors.OpPrereqError("No such instance name '%s'" % name)
3234 self.wanted_instances.append(instance)
3236 self.wanted_instances = [self.cfg.GetInstanceInfo(name) for name
3237 in self.cfg.GetInstanceList()]
3241 def _ComputeDiskStatus(self, instance, snode, dev):
3242 """Compute block device status.
3245 self.cfg.SetDiskID(dev, instance.primary_node)
3246 dev_pstatus = rpc.call_blockdev_find(instance.primary_node, dev)
3247 if dev.dev_type == "drbd":
3248 # we change the snode then (otherwise we use the one passed in)
3249 if dev.logical_id[0] == instance.primary_node:
3250 snode = dev.logical_id[1]
3252 snode = dev.logical_id[0]
3255 self.cfg.SetDiskID(dev, snode)
3256 dev_sstatus = rpc.call_blockdev_find(snode, dev)
3261 dev_children = [self._ComputeDiskStatus(instance, snode, child)
3262 for child in dev.children]
3267 "iv_name": dev.iv_name,
3268 "dev_type": dev.dev_type,
3269 "logical_id": dev.logical_id,
3270 "physical_id": dev.physical_id,
3271 "pstatus": dev_pstatus,
3272 "sstatus": dev_sstatus,
3273 "children": dev_children,
3278 def Exec(self, feedback_fn):
3279 """Gather and return data"""
3281 for instance in self.wanted_instances:
3282 remote_info = rpc.call_instance_info(instance.primary_node,
3284 if remote_info and "state" in remote_info:
3287 remote_state = "down"
3288 if instance.status == "down":
3289 config_state = "down"
3293 disks = [self._ComputeDiskStatus(instance, None, device)
3294 for device in instance.disks]
3297 "name": instance.name,
3298 "config_state": config_state,
3299 "run_state": remote_state,
3300 "pnode": instance.primary_node,
3301 "snodes": instance.secondary_nodes,
3303 "memory": instance.memory,
3304 "nics": [(nic.mac, nic.ip, nic.bridge) for nic in instance.nics],
3308 result[instance.name] = idict
3313 class LUSetInstanceParms(LogicalUnit):
3314 """Modifies an instances's parameters.
3317 HPATH = "instance-modify"
3318 HTYPE = constants.HTYPE_INSTANCE
3319 _OP_REQP = ["instance_name"]
3321 def BuildHooksEnv(self):
3324 This runs on the master, primary and secondaries.
3329 args['memory'] = self.mem
3331 args['vcpus'] = self.vcpus
3332 if self.do_ip or self.do_bridge:
3336 ip = self.instance.nics[0].ip
3338 bridge = self.bridge
3340 bridge = self.instance.nics[0].bridge
3341 args['nics'] = [(ip, bridge)]
3342 env = _BuildInstanceHookEnvByObject(self.instance, override=args)
3343 nl = [self.sstore.GetMasterNode(),
3344 self.instance.primary_node] + list(self.instance.secondary_nodes)
3347 def CheckPrereq(self):
3348 """Check prerequisites.
3350 This only checks the instance list against the existing names.
3353 self.mem = getattr(self.op, "mem", None)
3354 self.vcpus = getattr(self.op, "vcpus", None)
3355 self.ip = getattr(self.op, "ip", None)
3356 self.bridge = getattr(self.op, "bridge", None)
3357 if [self.mem, self.vcpus, self.ip, self.bridge].count(None) == 4:
3358 raise errors.OpPrereqError("No changes submitted")
3359 if self.mem is not None:
3361 self.mem = int(self.mem)
3362 except ValueError, err:
3363 raise errors.OpPrereqError("Invalid memory size: %s" % str(err))
3364 if self.vcpus is not None:
3366 self.vcpus = int(self.vcpus)
3367 except ValueError, err:
3368 raise errors.OpPrereqError("Invalid vcpus number: %s" % str(err))
3369 if self.ip is not None:
3371 if self.ip.lower() == "none":
3374 if not utils.IsValidIP(self.ip):
3375 raise errors.OpPrereqError("Invalid IP address '%s'." % self.ip)
3378 self.do_bridge = (self.bridge is not None)
3380 instance = self.cfg.GetInstanceInfo(
3381 self.cfg.ExpandInstanceName(self.op.instance_name))
3382 if instance is None:
3383 raise errors.OpPrereqError("No such instance name '%s'" %
3384 self.op.instance_name)
3385 self.op.instance_name = instance.name
3386 self.instance = instance
3389 def Exec(self, feedback_fn):
3390 """Modifies an instance.
3392 All parameters take effect only at the next restart of the instance.
3395 instance = self.instance
3397 instance.memory = self.mem
3398 result.append(("mem", self.mem))
3400 instance.vcpus = self.vcpus
3401 result.append(("vcpus", self.vcpus))
3403 instance.nics[0].ip = self.ip
3404 result.append(("ip", self.ip))
3406 instance.nics[0].bridge = self.bridge
3407 result.append(("bridge", self.bridge))
3409 self.cfg.AddInstance(instance)
3414 class LUQueryExports(NoHooksLU):
3415 """Query the exports list
3420 def CheckPrereq(self):
3421 """Check that the nodelist contains only existing nodes.
3424 self.nodes = _GetWantedNodes(self, getattr(self.op, "nodes", None))
3426 def Exec(self, feedback_fn):
3427 """Compute the list of all the exported system images.
3430 a dictionary with the structure node->(export-list)
3431 where export-list is a list of the instances exported on
3435 return rpc.call_export_list(self.nodes)
3438 class LUExportInstance(LogicalUnit):
3439 """Export an instance to an image in the cluster.
3442 HPATH = "instance-export"
3443 HTYPE = constants.HTYPE_INSTANCE
3444 _OP_REQP = ["instance_name", "target_node", "shutdown"]
3446 def BuildHooksEnv(self):
3449 This will run on the master, primary node and target node.
3453 "EXPORT_NODE": self.op.target_node,
3454 "EXPORT_DO_SHUTDOWN": self.op.shutdown,
3456 env.update(_BuildInstanceHookEnvByObject(self.instance))
3457 nl = [self.sstore.GetMasterNode(), self.instance.primary_node,
3458 self.op.target_node]
3461 def CheckPrereq(self):
3462 """Check prerequisites.
3464 This checks that the instance name is a valid one.
3467 instance_name = self.cfg.ExpandInstanceName(self.op.instance_name)
3468 self.instance = self.cfg.GetInstanceInfo(instance_name)
3469 if self.instance is None:
3470 raise errors.OpPrereqError("Instance '%s' not found" %
3471 self.op.instance_name)
3474 dst_node_short = self.cfg.ExpandNodeName(self.op.target_node)
3475 self.dst_node = self.cfg.GetNodeInfo(dst_node_short)
3477 if self.dst_node is None:
3478 raise errors.OpPrereqError("Destination node '%s' is unknown." %
3479 self.op.target_node)
3480 self.op.target_node = self.dst_node.name
3482 def Exec(self, feedback_fn):
3483 """Export an instance to an image in the cluster.
3486 instance = self.instance
3487 dst_node = self.dst_node
3488 src_node = instance.primary_node
3489 # shutdown the instance, unless requested not to do so
3490 if self.op.shutdown:
3491 op = opcodes.OpShutdownInstance(instance_name=instance.name)
3492 self.processor.ChainOpCode(op, feedback_fn)
3494 vgname = self.cfg.GetVGName()
3499 for disk in instance.disks:
3500 if disk.iv_name == "sda":
3501 # new_dev_name will be a snapshot of an lvm leaf of the one we passed
3502 new_dev_name = rpc.call_blockdev_snapshot(src_node, disk)
3504 if not new_dev_name:
3505 logger.Error("could not snapshot block device %s on node %s" %
3506 (disk.logical_id[1], src_node))
3508 new_dev = objects.Disk(dev_type="lvm", size=disk.size,
3509 logical_id=(vgname, new_dev_name),
3510 physical_id=(vgname, new_dev_name),
3511 iv_name=disk.iv_name)
3512 snap_disks.append(new_dev)
3515 if self.op.shutdown:
3516 op = opcodes.OpStartupInstance(instance_name=instance.name,
3518 self.processor.ChainOpCode(op, feedback_fn)
3520 # TODO: check for size
3522 for dev in snap_disks:
3523 if not rpc.call_snapshot_export(src_node, dev, dst_node.name,
3525 logger.Error("could not export block device %s from node"
3527 (dev.logical_id[1], src_node, dst_node.name))
3528 if not rpc.call_blockdev_remove(src_node, dev):
3529 logger.Error("could not remove snapshot block device %s from"
3530 " node %s" % (dev.logical_id[1], src_node))
3532 if not rpc.call_finalize_export(dst_node.name, instance, snap_disks):
3533 logger.Error("could not finalize export for instance %s on node %s" %
3534 (instance.name, dst_node.name))
3536 nodelist = self.cfg.GetNodeList()
3537 nodelist.remove(dst_node.name)
3539 # on one-node clusters nodelist will be empty after the removal
3540 # if we proceed the backup would be removed because OpQueryExports
3541 # substitutes an empty list with the full cluster node list.
3543 op = opcodes.OpQueryExports(nodes=nodelist)
3544 exportlist = self.processor.ChainOpCode(op, feedback_fn)
3545 for node in exportlist:
3546 if instance.name in exportlist[node]:
3547 if not rpc.call_export_remove(node, instance.name):
3548 logger.Error("could not remove older export for instance %s"
3549 " on node %s" % (instance.name, node))
3552 class TagsLU(NoHooksLU):
3555 This is an abstract class which is the parent of all the other tags LUs.
3558 def CheckPrereq(self):
3559 """Check prerequisites.
3562 if self.op.kind == constants.TAG_CLUSTER:
3563 self.target = self.cfg.GetClusterInfo()
3564 elif self.op.kind == constants.TAG_NODE:
3565 name = self.cfg.ExpandNodeName(self.op.name)
3567 raise errors.OpPrereqError("Invalid node name (%s)" %
3570 self.target = self.cfg.GetNodeInfo(name)
3571 elif self.op.kind == constants.TAG_INSTANCE:
3572 name = self.cfg.ExpandInstanceName(name)
3574 raise errors.OpPrereqError("Invalid instance name (%s)" %
3577 self.target = self.cfg.GetInstanceInfo(name)
3579 raise errors.OpPrereqError("Wrong tag type requested (%s)" %
3583 class LUGetTags(TagsLU):
3584 """Returns the tags of a given object.
3587 _OP_REQP = ["kind", "name"]
3589 def Exec(self, feedback_fn):
3590 """Returns the tag list.
3593 return self.target.GetTags()
3596 class LUAddTag(TagsLU):
3597 """Sets a tag on a given object.
3600 _OP_REQP = ["kind", "name", "tag"]
3602 def CheckPrereq(self):
3603 """Check prerequisites.
3605 This checks the type and length of the tag name and value.
3608 TagsLU.CheckPrereq(self)
3609 objects.TaggableObject.ValidateTag(self.op.tag)
3611 def Exec(self, feedback_fn):
3616 self.target.AddTag(self.op.tag)
3617 except errors.TagError, err:
3618 raise errors.OpExecError("Error while setting tag: %s" % str(err))
3620 self.cfg.Update(self.target)
3621 except errors.ConfigurationError:
3622 raise errors.OpRetryError("There has been a modification to the"
3623 " config file and the operation has been"
3624 " aborted. Please retry.")
3627 class LUDelTag(TagsLU):
3628 """Delete a tag from a given object.
3631 _OP_REQP = ["kind", "name", "tag"]
3633 def CheckPrereq(self):
3634 """Check prerequisites.
3636 This checks that we have the given tag.
3639 TagsLU.CheckPrereq(self)
3640 objects.TaggableObject.ValidateTag(self.op.tag)
3641 if self.op.tag not in self.target.GetTags():
3642 raise errors.OpPrereqError("Tag not found")
3644 def Exec(self, feedback_fn):
3645 """Remove the tag from the object.
3648 self.target.RemoveTag(self.op.tag)
3650 self.cfg.Update(self.target)
3651 except errors.ConfigurationError:
3652 raise errors.OpRetryError("There has been a modification to the"
3653 " config file and the operation has been"
3654 " aborted. Please retry.")