#
#
-# Copyright (C) 2006, 2007, 2008 Google Inc.
+# Copyright (C) 2006, 2007, 2008, 2010 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
import os
import os.path
-import sha
import re
import logging
+import time
from ganeti import rpc
from ganeti import ssh
from ganeti import constants
from ganeti import objects
from ganeti import ssconf
+from ganeti import serializer
+from ganeti import hypervisor
+from ganeti import bdev
+from ganeti import netutils
-def _InitSSHSetup(node):
+def _InitSSHSetup():
"""Setup the SSH configuration for the cluster.
-
This generates a dsa keypair for root, adds the pub key to the
permitted hosts and adds the hostkey to its own known hosts.
- Args:
- node: the name of this host as a fqdn
-
"""
priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS)
raise errors.OpExecError("Could not generate ssh keypair, error %s" %
result.output)
- f = open(pub_key, 'r')
- try:
- utils.AddAuthorizedKey(auth_keys, f.read(8192))
- finally:
- f.close()
+ utils.AddAuthorizedKey(auth_keys, utils.ReadFile(pub_key))
-def _InitGanetiServerSetup():
- """Setup the necessary configuration for the initial node daemon.
+def GenerateHmacKey(file_name):
+ """Writes a new HMAC key.
- This creates the nodepass file containing the shared password for
- the cluster and also generates the SSL certificate.
+ @type file_name: str
+ @param file_name: Path to output file
"""
- # Create pseudo random password
- randpass = utils.GenerateSecret()
+ utils.WriteFile(file_name, data="%s\n" % utils.GenerateSecret(), mode=0400,
+ backup=True)
+
+
+def GenerateClusterCrypto(new_cluster_cert, new_rapi_cert, new_confd_hmac_key,
+ new_cds, rapi_cert_pem=None, cds=None,
+ nodecert_file=constants.NODED_CERT_FILE,
+ rapicert_file=constants.RAPI_CERT_FILE,
+ hmackey_file=constants.CONFD_HMAC_KEY,
+ cds_file=constants.CLUSTER_DOMAIN_SECRET_FILE):
+ """Updates the cluster certificates, keys and secrets.
+
+ @type new_cluster_cert: bool
+ @param new_cluster_cert: Whether to generate a new cluster certificate
+ @type new_rapi_cert: bool
+ @param new_rapi_cert: Whether to generate a new RAPI certificate
+ @type new_confd_hmac_key: bool
+ @param new_confd_hmac_key: Whether to generate a new HMAC key
+ @type new_cds: bool
+ @param new_cds: Whether to generate a new cluster domain secret
+ @type rapi_cert_pem: string
+ @param rapi_cert_pem: New RAPI certificate in PEM format
+ @type cds: string
+ @param cds: New cluster domain secret
+ @type nodecert_file: string
+ @param nodecert_file: optional override of the node cert file path
+ @type rapicert_file: string
+ @param rapicert_file: optional override of the rapi cert file path
+ @type hmackey_file: string
+ @param hmackey_file: optional override of the hmac key file path
- # and write it into the config file
- utils.WriteFile(constants.CLUSTER_PASSWORD_FILE,
- data="%s\n" % randpass, mode=0400)
+ """
+ # noded SSL certificate
+ cluster_cert_exists = os.path.exists(nodecert_file)
+ if new_cluster_cert or not cluster_cert_exists:
+ if cluster_cert_exists:
+ utils.CreateBackup(nodecert_file)
- result = utils.RunCmd(["openssl", "req", "-new", "-newkey", "rsa:1024",
- "-days", str(365*5), "-nodes", "-x509",
- "-keyout", constants.SSL_CERT_FILE,
- "-out", constants.SSL_CERT_FILE, "-batch"])
- if result.failed:
- raise errors.OpExecError("could not generate server ssl cert, command"
- " %s had exitcode %s and error message %s" %
- (result.cmd, result.exit_code, result.output))
+ logging.debug("Generating new cluster certificate at %s", nodecert_file)
+ utils.GenerateSelfSignedSslCert(nodecert_file)
+
+ # confd HMAC key
+ if new_confd_hmac_key or not os.path.exists(hmackey_file):
+ logging.debug("Writing new confd HMAC key to %s", hmackey_file)
+ GenerateHmacKey(hmackey_file)
+
+ # RAPI
+ rapi_cert_exists = os.path.exists(rapicert_file)
+
+ if rapi_cert_pem:
+ # Assume rapi_pem contains a valid PEM-formatted certificate and key
+ logging.debug("Writing RAPI certificate at %s", rapicert_file)
+ utils.WriteFile(rapicert_file, data=rapi_cert_pem, backup=True)
+
+ elif new_rapi_cert or not rapi_cert_exists:
+ if rapi_cert_exists:
+ utils.CreateBackup(rapicert_file)
+
+ logging.debug("Generating new RAPI certificate at %s", rapicert_file)
+ utils.GenerateSelfSignedSslCert(rapicert_file)
- os.chmod(constants.SSL_CERT_FILE, 0400)
+ # Cluster domain secret
+ if cds:
+ logging.debug("Writing cluster domain secret to %s", cds_file)
+ utils.WriteFile(cds_file, data=cds, backup=True)
- result = utils.RunCmd([constants.NODE_INITD_SCRIPT, "restart"])
+ elif new_cds or not os.path.exists(cds_file):
+ logging.debug("Generating new cluster domain secret at %s", cds_file)
+ GenerateHmacKey(cds_file)
+
+def _InitGanetiServerSetup(master_name):
+ """Setup the necessary configuration for the initial node daemon.
+
+ This creates the nodepass file containing the shared password for
+ the cluster, generates the SSL certificate and starts the node daemon.
+
+ @type master_name: str
+ @param master_name: Name of the master node
+
+ """
+ # Generate cluster secrets
+ GenerateClusterCrypto(True, False, False, False)
+
+ result = utils.RunCmd([constants.DAEMON_UTIL, "start", constants.NODED])
if result.failed:
raise errors.OpExecError("Could not start the node daemon, command %s"
" had exitcode %s and error %s" %
(result.cmd, result.exit_code, result.output))
+ _WaitForNodeDaemon(master_name)
+
+
+def _WaitForNodeDaemon(node_name):
+ """Wait for node daemon to become responsive.
+
+ """
+ def _CheckNodeDaemon():
+ result = rpc.RpcRunner.call_version([node_name])[node_name]
+ if result.fail_msg:
+ raise utils.RetryAgain()
+
+ try:
+ utils.Retry(_CheckNodeDaemon, 1.0, 10.0)
+ except utils.RetryTimeout:
+ raise errors.OpExecError("Node daemon on %s didn't answer queries within"
+ " 10 seconds" % node_name)
+
+
+def _InitFileStorage(file_storage_dir):
+ """Initialize if needed the file storage.
+
+ @param file_storage_dir: the user-supplied value
+ @return: either empty string (if file storage was disabled at build
+ time) or the normalized path to the storage directory
+
+ """
+ if not constants.ENABLE_FILE_STORAGE:
+ return ""
-def InitCluster(cluster_name, hypervisor_type, mac_prefix, def_bridge,
- master_netdev, file_storage_dir,
- secondary_ip=None,
- vg_name=None):
+ file_storage_dir = os.path.normpath(file_storage_dir)
+
+ if not os.path.isabs(file_storage_dir):
+ raise errors.OpPrereqError("The file storage directory you passed is"
+ " not an absolute path.", errors.ECODE_INVAL)
+
+ if not os.path.exists(file_storage_dir):
+ try:
+ os.makedirs(file_storage_dir, 0750)
+ except OSError, err:
+ raise errors.OpPrereqError("Cannot create file storage directory"
+ " '%s': %s" % (file_storage_dir, err),
+ errors.ECODE_ENVIRON)
+
+ if not os.path.isdir(file_storage_dir):
+ raise errors.OpPrereqError("The file storage directory '%s' is not"
+ " a directory." % file_storage_dir,
+ errors.ECODE_ENVIRON)
+ return file_storage_dir
+
+
+#pylint: disable-msg=R0913
+def InitCluster(cluster_name, mac_prefix,
+ master_netdev, file_storage_dir, candidate_pool_size,
+ secondary_ip=None, vg_name=None, beparams=None,
+ nicparams=None, hvparams=None, enabled_hypervisors=None,
+ modify_etc_hosts=True, modify_ssh_setup=True,
+ maintain_node_health=False, drbd_helper=None,
+ uid_pool=None, default_iallocator=None):
"""Initialise the cluster.
+ @type candidate_pool_size: int
+ @param candidate_pool_size: master candidate pool size
+
"""
+ # TODO: complete the docstring
if config.ConfigWriter.IsCluster():
- raise errors.OpPrereqError("Cluster is already initialised")
+ raise errors.OpPrereqError("Cluster is already initialised",
+ errors.ECODE_STATE)
- if hypervisor_type == constants.HT_XEN_HVM31:
- if not os.path.exists(constants.VNC_PASSWORD_FILE):
- raise errors.OpPrereqError("Please prepare the cluster VNC"
- "password file %s" %
- constants.VNC_PASSWORD_FILE)
+ if not enabled_hypervisors:
+ raise errors.OpPrereqError("Enabled hypervisors list must contain at"
+ " least one member", errors.ECODE_INVAL)
+ invalid_hvs = set(enabled_hypervisors) - constants.HYPER_TYPES
+ if invalid_hvs:
+ raise errors.OpPrereqError("Enabled hypervisors contains invalid"
+ " entries: %s" % invalid_hvs,
+ errors.ECODE_INVAL)
- hostname = utils.HostInfo()
+ hostname = netutils.GetHostInfo()
if hostname.ip.startswith("127."):
raise errors.OpPrereqError("This host's IP resolves to the private"
" range (%s). Please fix DNS or %s." %
- (hostname.ip, constants.ETC_HOSTS))
+ (hostname.ip, constants.ETC_HOSTS),
+ errors.ECODE_ENVIRON)
- if not utils.TcpPing(hostname.ip, constants.DEFAULT_NODED_PORT,
- source=constants.LOCALHOST_IP_ADDRESS):
+ if not netutils.OwnIpAddress(hostname.ip):
raise errors.OpPrereqError("Inconsistency: this host's name resolves"
" to %s,\nbut this ip address does not"
- " belong to this host."
- " Aborting." % hostname.ip)
+ " belong to this host. Aborting." %
+ hostname.ip, errors.ECODE_ENVIRON)
- clustername = utils.HostInfo(cluster_name)
+ clustername = \
+ netutils.GetHostInfo(netutils.HostInfo.NormalizeName(cluster_name))
- if utils.TcpPing(clustername.ip, constants.DEFAULT_NODED_PORT,
+ if netutils.TcpPing(clustername.ip, constants.DEFAULT_NODED_PORT,
timeout=5):
- raise errors.OpPrereqError("Cluster IP already active. Aborting.")
+ raise errors.OpPrereqError("Cluster IP already active. Aborting.",
+ errors.ECODE_NOTUNIQUE)
if secondary_ip:
- if not utils.IsValidIP(secondary_ip):
- raise errors.OpPrereqError("Invalid secondary ip given")
+ if not netutils.IsValidIP4(secondary_ip):
+ raise errors.OpPrereqError("Invalid secondary ip given",
+ errors.ECODE_INVAL)
if (secondary_ip != hostname.ip and
- (not utils.TcpPing(secondary_ip, constants.DEFAULT_NODED_PORT,
- source=constants.LOCALHOST_IP_ADDRESS))):
+ not netutils.OwnIpAddress(secondary_ip)):
raise errors.OpPrereqError("You gave %s as secondary IP,"
" but it does not belong to this host." %
- secondary_ip)
+ secondary_ip, errors.ECODE_ENVIRON)
else:
secondary_ip = hostname.ip
constants.MIN_VG_SIZE)
if vgstatus:
raise errors.OpPrereqError("Error: %s\nspecify --no-lvm-storage if"
- " you are not using lvm" % vgstatus)
-
- file_storage_dir = os.path.normpath(file_storage_dir)
-
- if not os.path.isabs(file_storage_dir):
- raise errors.OpPrereqError("The file storage directory you passed is"
- " not an absolute path.")
+ " you are not using lvm" % vgstatus,
+ errors.ECODE_INVAL)
- if not os.path.exists(file_storage_dir):
+ if drbd_helper is not None:
try:
- os.makedirs(file_storage_dir, 0750)
- except OSError, err:
- raise errors.OpPrereqError("Cannot create file storage directory"
- " '%s': %s" %
- (file_storage_dir, err))
-
- if not os.path.isdir(file_storage_dir):
- raise errors.OpPrereqError("The file storage directory '%s' is not"
- " a directory." % file_storage_dir)
+ curr_helper = bdev.BaseDRBD.GetUsermodeHelper()
+ except errors.BlockDeviceError, err:
+ raise errors.OpPrereqError("Error while checking drbd helper"
+ " (specify --no-drbd-storage if you are not"
+ " using drbd): %s" % str(err),
+ errors.ECODE_ENVIRON)
+ if drbd_helper != curr_helper:
+ raise errors.OpPrereqError("Error: requiring %s as drbd helper but %s"
+ " is the current helper" % (drbd_helper,
+ curr_helper),
+ errors.ECODE_INVAL)
+
+ file_storage_dir = _InitFileStorage(file_storage_dir)
if not re.match("^[0-9a-z]{2}:[0-9a-z]{2}:[0-9a-z]{2}$", mac_prefix):
- raise errors.OpPrereqError("Invalid mac prefix given '%s'" % mac_prefix)
-
- if hypervisor_type not in constants.HYPER_TYPES:
- raise errors.OpPrereqError("Invalid hypervisor type given '%s'" %
- hypervisor_type)
+ raise errors.OpPrereqError("Invalid mac prefix given '%s'" % mac_prefix,
+ errors.ECODE_INVAL)
result = utils.RunCmd(["ip", "link", "show", "dev", master_netdev])
if result.failed:
raise errors.OpPrereqError("Invalid master netdev given (%s): '%s'" %
(master_netdev,
- result.output.strip()))
+ result.output.strip()), errors.ECODE_INVAL)
+
+ dirs = [(constants.RUN_GANETI_DIR, constants.RUN_DIRS_MODE)]
+ utils.EnsureDirs(dirs)
- if not (os.path.isfile(constants.NODE_INITD_SCRIPT) and
- os.access(constants.NODE_INITD_SCRIPT, os.X_OK)):
- raise errors.OpPrereqError("Init.d script '%s' missing or not"
- " executable." % constants.NODE_INITD_SCRIPT)
+ utils.ForceDictType(beparams, constants.BES_PARAMETER_TYPES)
+ utils.ForceDictType(nicparams, constants.NICS_PARAMETER_TYPES)
+ objects.NIC.CheckParameterSyntax(nicparams)
- # set up the inter-node password and certificate
- _InitGanetiServerSetup()
+ # hvparams is a mapping of hypervisor->hvparams dict
+ for hv_name, hv_params in hvparams.iteritems():
+ utils.ForceDictType(hv_params, constants.HVS_PARAMETER_TYPES)
+ hv_class = hypervisor.GetHypervisor(hv_name)
+ hv_class.CheckParameterSyntax(hv_params)
+
+ # set up the inter-node password and certificate, start noded
+ _InitGanetiServerSetup(hostname.name)
# set up ssh config and /etc/hosts
- f = open(constants.SSH_HOST_RSA_PUB, 'r')
- try:
- sshline = f.read()
- finally:
- f.close()
+ sshline = utils.ReadFile(constants.SSH_HOST_RSA_PUB)
sshkey = sshline.split(" ")[1]
- utils.AddHostToEtcHosts(hostname.name)
- _InitSSHSetup(hostname.name)
+ if modify_etc_hosts:
+ utils.AddHostToEtcHosts(hostname.name)
+
+ if modify_ssh_setup:
+ _InitSSHSetup()
+
+ if default_iallocator is not None:
+ alloc_script = utils.FindFile(default_iallocator,
+ constants.IALLOCATOR_SEARCH_PATH,
+ os.path.isfile)
+ if alloc_script is None:
+ raise errors.OpPrereqError("Invalid default iallocator script '%s'"
+ " specified" % default_iallocator,
+ errors.ECODE_INVAL)
+
+ now = time.time()
# init of cluster config file
cluster_config = objects.Cluster(
highest_used_port=(constants.FIRST_DRBD_PORT - 1),
mac_prefix=mac_prefix,
volume_group_name=vg_name,
- default_bridge=def_bridge,
tcpudp_port_pool=set(),
- hypervisor=hypervisor_type,
master_node=hostname.name,
master_ip=clustername.ip,
master_netdev=master_netdev,
cluster_name=clustername.name,
file_storage_dir=file_storage_dir,
+ enabled_hypervisors=enabled_hypervisors,
+ beparams={constants.PP_DEFAULT: beparams},
+ nicparams={constants.PP_DEFAULT: nicparams},
+ hvparams=hvparams,
+ candidate_pool_size=candidate_pool_size,
+ modify_etc_hosts=modify_etc_hosts,
+ modify_ssh_setup=modify_ssh_setup,
+ uid_pool=uid_pool,
+ ctime=now,
+ mtime=now,
+ uuid=utils.NewUUID(),
+ maintain_node_health=maintain_node_health,
+ drbd_usermode_helper=drbd_helper,
+ default_iallocator=default_iallocator,
)
master_node_config = objects.Node(name=hostname.name,
primary_ip=hostname.ip,
- secondary_ip=secondary_ip)
+ secondary_ip=secondary_ip,
+ serial_no=1,
+ master_candidate=True,
+ offline=False, drained=False,
+ )
+ InitConfig(constants.CONFIG_VERSION, cluster_config, master_node_config)
cfg = config.ConfigWriter()
- cfg.InitConfig(constants.CONFIG_VERSION, cluster_config, master_node_config)
-
ssh.WriteKnownHostsFile(cfg, constants.SSH_KNOWN_HOSTS_FILE)
+ cfg.Update(cfg.GetClusterInfo(), logging.error)
# start the master ip
# TODO: Review rpc call from bootstrap
- rpc.call_node_start_master(hostname.name, True)
+ # TODO: Warn on failed start master
+ rpc.RpcRunner.call_node_start_master(hostname.name, True, False)
+
+
+def InitConfig(version, cluster_config, master_node_config,
+ cfg_file=constants.CLUSTER_CONF_FILE):
+ """Create the initial cluster configuration.
+
+ It will contain the current node, which will also be the master
+ node, and no instances.
+
+ @type version: int
+ @param version: configuration version
+ @type cluster_config: L{objects.Cluster}
+ @param cluster_config: cluster configuration
+ @type master_node_config: L{objects.Node}
+ @param master_node_config: master node configuration
+ @type cfg_file: string
+ @param cfg_file: configuration file path
+
+ """
+ nodes = {
+ master_node_config.name: master_node_config,
+ }
+
+ now = time.time()
+ config_data = objects.ConfigData(version=version,
+ cluster=cluster_config,
+ nodes=nodes,
+ instances={},
+ serial_no=1,
+ ctime=now, mtime=now)
+ utils.WriteFile(cfg_file,
+ data=serializer.Dump(config_data.ToDict()),
+ mode=0600)
def FinalizeClusterDestroy(master):
begun in cmdlib.LUDestroyOpcode.
"""
- if not rpc.call_node_stop_master(master, True):
- logging.warning("Could not disable the master role")
- if not rpc.call_node_leave_cluster(master):
- logging.warning("Could not shutdown the node daemon and cleanup the node")
-
-
-def SetupNodeDaemon(node, ssh_key_check):
+ cfg = config.ConfigWriter()
+ modify_ssh_setup = cfg.GetClusterInfo().modify_ssh_setup
+ result = rpc.RpcRunner.call_node_stop_master(master, True)
+ msg = result.fail_msg
+ if msg:
+ logging.warning("Could not disable the master role: %s", msg)
+ result = rpc.RpcRunner.call_node_leave_cluster(master, modify_ssh_setup)
+ msg = result.fail_msg
+ if msg:
+ logging.warning("Could not shutdown the node daemon and cleanup"
+ " the node: %s", msg)
+
+
+def SetupNodeDaemon(cluster_name, node, ssh_key_check):
"""Add a node to the cluster.
This function must be called before the actual opcode, and will ssh
to the remote node, copy the needed files, and start ganeti-noded,
allowing the master to do the rest via normal rpc calls.
- Args:
- node: fully qualified domain name for the new node
+ @param cluster_name: the cluster name
+ @param node: the name of the new node
+ @param ssh_key_check: whether to do a strict key check
"""
- cfg = ssconf.SimpleConfigReader()
- sshrunner = ssh.SshRunner(cfg.GetClusterName())
- gntpass = utils.GetNodeDaemonPassword()
- if not re.match('^[a-zA-Z0-9.]{1,64}$', gntpass):
- raise errors.OpExecError("ganeti password corruption detected")
- f = open(constants.SSL_CERT_FILE)
- try:
- gntpem = f.read(8192)
- finally:
- f.close()
+ sshrunner = ssh.SshRunner(cluster_name)
+
+ noded_cert = utils.ReadFile(constants.NODED_CERT_FILE)
+ rapi_cert = utils.ReadFile(constants.RAPI_CERT_FILE)
+ confd_hmac_key = utils.ReadFile(constants.CONFD_HMAC_KEY)
+
# in the base64 pem encoding, neither '!' nor '.' are valid chars,
# so we use this to detect an invalid certificate; as long as the
# cert doesn't contain this, the here-document will be correctly
- # parsed by the shell sequence below
- if re.search('^!EOF\.', gntpem, re.MULTILINE):
- raise errors.OpExecError("invalid PEM encoding in the SSL certificate")
- if not gntpem.endswith("\n"):
- raise errors.OpExecError("PEM must end with newline")
+ # parsed by the shell sequence below. HMAC keys are hexadecimal strings,
+ # so the same restrictions apply.
+ for content in (noded_cert, rapi_cert, confd_hmac_key):
+ if re.search('^!EOF\.', content, re.MULTILINE):
+ raise errors.OpExecError("invalid SSL certificate or HMAC key")
+
+ if not noded_cert.endswith("\n"):
+ noded_cert += "\n"
+ if not rapi_cert.endswith("\n"):
+ rapi_cert += "\n"
+ if not confd_hmac_key.endswith("\n"):
+ confd_hmac_key += "\n"
# set up inter-node password and certificate and restarts the node daemon
# and then connect with ssh to set password and start ganeti-noded
# note that all the below variables are sanitized at this point,
# either by being constants or by the checks above
+ # TODO: Could this command exceed a shell's maximum command length?
mycommand = ("umask 077 && "
- "echo '%s' > '%s' && "
"cat > '%s' << '!EOF.' && \n"
- "%s!EOF.\n%s restart" %
- (gntpass, constants.CLUSTER_PASSWORD_FILE,
- constants.SSL_CERT_FILE, gntpem,
- constants.NODE_INITD_SCRIPT))
+ "%s!EOF.\n"
+ "cat > '%s' << '!EOF.' && \n"
+ "%s!EOF.\n"
+ "cat > '%s' << '!EOF.' && \n"
+ "%s!EOF.\n"
+ "chmod 0400 %s %s %s && "
+ "%s start %s" %
+ (constants.NODED_CERT_FILE, noded_cert,
+ constants.RAPI_CERT_FILE, rapi_cert,
+ constants.CONFD_HMAC_KEY, confd_hmac_key,
+ constants.NODED_CERT_FILE, constants.RAPI_CERT_FILE,
+ constants.CONFD_HMAC_KEY,
+ constants.DAEMON_UTIL, constants.NODED))
result = sshrunner.Run(node, 'root', mycommand, batch=False,
ask_key=ssh_key_check,
" output: %s" %
(node, result.fail_reason, result.output))
- return 0
+ _WaitForNodeDaemon(node)
-def MasterFailover():
+def MasterFailover(no_voting=False):
"""Failover the master node.
This checks that we are not already the master, and will cause the
current master to cease being master, and the non-master to become
new master.
+ @type no_voting: boolean
+ @param no_voting: force the operation without remote nodes agreement
+ (dangerous)
+
"""
- cfg = ssconf.SimpleConfigWriter()
+ sstore = ssconf.SimpleStore()
- new_master = utils.HostInfo().name
- old_master = cfg.GetMasterNode()
+ old_master, new_master = ssconf.GetMasterAndMyself(sstore)
+ node_list = sstore.GetNodeList()
+ mc_list = sstore.GetMasterCandidates()
if old_master == new_master:
raise errors.OpPrereqError("This commands must be run on the node"
" where you want the new master to be."
" %s is already the master" %
- old_master)
+ old_master, errors.ECODE_INVAL)
+
+ if new_master not in mc_list:
+ mc_no_master = [name for name in mc_list if name != old_master]
+ raise errors.OpPrereqError("This node is not among the nodes marked"
+ " as master candidates. Only these nodes"
+ " can become masters. Current list of"
+ " master candidates is:\n"
+ "%s" % ('\n'.join(mc_no_master)),
+ errors.ECODE_STATE)
+
+ if not no_voting:
+ vote_list = GatherMasterVotes(node_list)
+
+ if vote_list:
+ voted_master = vote_list[0][0]
+ if voted_master is None:
+ raise errors.OpPrereqError("Cluster is inconsistent, most nodes did"
+ " not respond.", errors.ECODE_ENVIRON)
+ elif voted_master != old_master:
+ raise errors.OpPrereqError("I have a wrong configuration, I believe"
+ " the master is %s but the other nodes"
+ " voted %s. Please resync the configuration"
+ " of this node." %
+ (old_master, voted_master),
+ errors.ECODE_STATE)
# end checks
rcode = 0
- logging.info("setting master to %s, old master: %s", new_master, old_master)
-
- if not rpc.call_node_stop_master(old_master, True):
- logging.error("could disable the master role on the old master"
- " %s, please disable manually", old_master)
+ logging.info("Setting master to %s, old master: %s", new_master, old_master)
- cfg.SetMasterNode(new_master)
- cfg.Save()
+ result = rpc.RpcRunner.call_node_stop_master(old_master, True)
+ msg = result.fail_msg
+ if msg:
+ logging.error("Could not disable the master role on the old master"
+ " %s, please disable manually: %s", old_master, msg)
+ master_ip = sstore.GetMasterIP()
+ total_timeout = 30
# Here we have a phase where no master should be running
+ def _check_ip():
+ if netutils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
+ raise utils.RetryAgain()
- if not rpc.call_upload_file(cfg.GetNodeList(),
- constants.CLUSTER_CONF_FILE):
- logging.error("could not distribute the new simple store master file"
- " to the other nodes, please check.")
+ try:
+ utils.Retry(_check_ip, (1, 1.5, 5), total_timeout)
+ except utils.RetryTimeout:
+ logging.warning("The master IP is still reachable after %s seconds,"
+ " continuing but activating the master on the current"
+ " node will probably fail", total_timeout)
+
+ # instantiate a real config writer, as we now know we have the
+ # configuration data
+ cfg = config.ConfigWriter()
- if not rpc.call_node_start_master(new_master, True):
- logging.error("could not start the master role on the new master"
- " %s, please check", new_master)
+ cluster_info = cfg.GetClusterInfo()
+ cluster_info.master_node = new_master
+ # this will also regenerate the ssconf files, since we updated the
+ # cluster info
+ cfg.Update(cluster_info, logging.error)
+
+ result = rpc.RpcRunner.call_node_start_master(new_master, True, no_voting)
+ msg = result.fail_msg
+ if msg:
+ logging.error("Could not start the master role on the new master"
+ " %s, please check: %s", new_master, msg)
rcode = 1
return rcode
+
+
+def GetMaster():
+ """Returns the current master node.
+
+ This is a separate function in bootstrap since it's needed by
+ gnt-cluster, and instead of importing directly ssconf, it's better
+ to abstract it in bootstrap, where we do use ssconf in other
+ functions too.
+
+ """
+ sstore = ssconf.SimpleStore()
+
+ old_master, _ = ssconf.GetMasterAndMyself(sstore)
+
+ return old_master
+
+
+def GatherMasterVotes(node_list):
+ """Check the agreement on who is the master.
+
+ This function will return a list of (node, number of votes), ordered
+ by the number of votes. Errors will be denoted by the key 'None'.
+
+ Note that the sum of votes is the number of nodes this machine
+ knows, whereas the number of entries in the list could be different
+ (if some nodes vote for another master).
+
+ We remove ourselves from the list since we know that (bugs aside)
+ since we use the same source for configuration information for both
+ backend and boostrap, we'll always vote for ourselves.
+
+ @type node_list: list
+ @param node_list: the list of nodes to query for master info; the current
+ node will be removed if it is in the list
+ @rtype: list
+ @return: list of (node, votes)
+
+ """
+ myself = netutils.HostInfo().name
+ try:
+ node_list.remove(myself)
+ except ValueError:
+ pass
+ if not node_list:
+ # no nodes left (eventually after removing myself)
+ return []
+ results = rpc.RpcRunner.call_master_info(node_list)
+ if not isinstance(results, dict):
+ # this should not happen (unless internal error in rpc)
+ logging.critical("Can't complete rpc call, aborting master startup")
+ return [(None, len(node_list))]
+ votes = {}
+ for node in results:
+ nres = results[node]
+ data = nres.payload
+ msg = nres.fail_msg
+ fail = False
+ if msg:
+ logging.warning("Error contacting node %s: %s", node, msg)
+ fail = True
+ elif not isinstance(data, (tuple, list)) or len(data) < 3:
+ logging.warning("Invalid data received from node %s: %s", node, data)
+ fail = True
+ if fail:
+ if None not in votes:
+ votes[None] = 0
+ votes[None] += 1
+ continue
+ master_node = data[2]
+ if master_node not in votes:
+ votes[master_node] = 0
+ votes[master_node] += 1
+
+ vote_list = [v for v in votes.items()]
+ # sort first on number of votes then on name, since we want None
+ # sorted later if we have the half of the nodes not responding, and
+ # half voting all for the same master
+ vote_list.sort(key=lambda x: (x[1], x[0]), reverse=True)
+
+ return vote_list
projects / ganeti-local / blobdiff