#
#
-# 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 sys
import re
import os
+import errno
from ganeti import errors
from ganeti import constants
from ganeti import utils
from ganeti import serializer
from ganeti import objects
+from ganeti import netutils
SSCONF_LOCK_TIMEOUT = 10
return master_candidate, drained, offline
def GetInstanceByLinkIp(self, ip, link):
+ """Get instance name from its link and ip address.
+
+ @type ip: string
+ @param ip: ip address
+ @type link: string
+ @param link: nic link
+ @rtype: string
+ @return: instance name
+
+ """
if not link:
link = self.GetDefaultNicLink()
if not link in self._ip_to_inst_by_link:
return self._mc_primary_ips
def GetInstancesIps(self, link):
+ """Get list of nic ips connected to a certain link.
+
+ @type link: string
+ @param link: nic link
+ @rtype: list
+ @return: list of ips connected to that link
+
+ """
if not link:
link = self.GetDefaultNicLink()
constants.SS_NODE_SECONDARY_IPS,
constants.SS_OFFLINE_NODES,
constants.SS_ONLINE_NODES,
+ constants.SS_PRIMARY_IP_FAMILY,
constants.SS_INSTANCE_LIST,
constants.SS_RELEASE_VERSION,
+ constants.SS_HYPERVISOR_LIST,
+ constants.SS_MAINTAIN_NODE_HEALTH,
+ constants.SS_UID_POOL,
+ constants.SS_NODEGROUPS,
)
_MAX_SIZE = 131072
filename = self._cfg_dir + '/' + self._SS_FILEPREFIX + key
return filename
- def _ReadFile(self, key):
+ def _ReadFile(self, key, default=None):
"""Generic routine to read keys.
This will read the file which holds the value requested. Errors
try:
data = utils.ReadFile(filename, size=self._MAX_SIZE)
except EnvironmentError, err:
+ if err.errno == errno.ENOENT and default is not None:
+ return default
raise errors.ConfigurationError("Can't read from the ssconf file:"
" '%s'" % str(err))
data = data.rstrip('\n')
for name, value in values.iteritems():
if value and not value.endswith("\n"):
value += "\n"
+ if len(value) > self._MAX_SIZE:
+ raise errors.ConfigurationError("ssconf file %s above maximum size" %
+ name)
utils.WriteFile(self.KeyToFilename(name), data=value, mode=0444)
finally:
ssconf_lock.Unlock()
nl = data.splitlines(False)
return nl
+ def GetNodegroupList(self):
+ """Return the list of nodegroups.
+
+ """
+ data = self._ReadFile(constants.SS_NODEGROUPS)
+ nl = data.splitlines(False)
+ return nl
+
def GetClusterTags(self):
"""Return the cluster tags.
nl = data.splitlines(False)
return nl
+ def GetHypervisorList(self):
+ """Return the list of enabled hypervisors.
+
+ """
+ data = self._ReadFile(constants.SS_HYPERVISOR_LIST)
+ nl = data.splitlines(False)
+ return nl
+
+ def GetMaintainNodeHealth(self):
+ """Return the value of the maintain_node_health option.
+
+ """
+ data = self._ReadFile(constants.SS_MAINTAIN_NODE_HEALTH)
+ # we rely on the bool serialization here
+ return data == "True"
+
+ def GetUidPool(self):
+ """Return the user-id pool definition string.
+
+ The separator character is a newline.
+
+ The return value can be parsed using uidpool.ParseUidPool()::
+
+ ss = ssconf.SimpleStore()
+ uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\\n")
+
+ """
+ data = self._ReadFile(constants.SS_UID_POOL)
+ return data
+
+ def GetPrimaryIPFamily(self):
+ """Return the cluster-wide primary address family.
+
+ """
+ try:
+ return int(self._ReadFile(constants.SS_PRIMARY_IP_FAMILY,
+ default=netutils.IP4Address.family))
+ except (ValueError, TypeError), err:
+ raise errors.ConfigurationError("Error while trying to parse primary ip"
+ " family: %s" % err)
+
def GetMasterAndMyself(ss=None):
"""Get the master node and my own hostname.
"""
if ss is None:
ss = SimpleStore()
- return ss.GetMasterNode(), utils.HostInfo().name
+ return ss.GetMasterNode(), netutils.Hostname.GetSysName()
def CheckMaster(debug, ss=None):
if debug:
sys.stderr.write("Not master, exiting.\n")
sys.exit(constants.EXIT_NOTMASTER)
-
-
-def CheckMasterCandidate(debug, ss=None):
- """Checks the node setup.
-
- If this is a master candidate, the function will return. Otherwise it will
- exit with an exit code based on the node status.
-
- """
- try:
- if ss is None:
- ss = SimpleStore()
- myself = utils.HostInfo().name
- candidates = ss.GetMasterCandidates()
- except errors.ConfigurationError, err:
- print "Cluster configuration incomplete: '%s'" % str(err)
- sys.exit(constants.EXIT_NODESETUP_ERROR)
- except errors.ResolverError, err:
- sys.stderr.write("Cannot resolve my own name (%s)\n" % err.args[0])
- sys.exit(constants.EXIT_NODESETUP_ERROR)
-
- if myself not in candidates:
- if debug:
- sys.stderr.write("Not master candidate, exiting.\n")
- sys.exit(constants.EXIT_NOTCANDIDATE)