import errno
import re
import subprocess
+import random
from ganeti import logger
from ganeti import errors
from ganeti import ssconf
+def _GetSshRunner():
+ return ssh.SshRunner()
+
+
def StartMaster():
"""Activate local node as master node.
utils.RemoveFile(priv_key)
utils.RemoveFile(pub_key)
+ # Return a reassuring string to the caller, and quit
+ raise errors.QuitGanetiException(False, 'Shutdown scheduled')
+
def GetNodeInfo(vgname):
"""Gives back a hash with different informations about the node.
if 'nodelist' in what:
result['nodelist'] = {}
+ random.shuffle(what['nodelist'])
for node in what['nodelist']:
- success, message = ssh.VerifyNodeHostname(node)
+ success, message = _GetSshRunner().VerifyNodeHostname(node)
if not success:
result['nodelist'][node] = message
+ if 'node-net-test' in what:
+ result['node-net-test'] = {}
+ my_name = utils.HostInfo().name
+ my_pip = my_sip = None
+ for name, pip, sip in what['node-net-test']:
+ if name == my_name:
+ my_pip = pip
+ my_sip = sip
+ break
+ if not my_pip:
+ result['node-net-test'][my_name] = ("Can't find my own"
+ " primary/secondary IP"
+ " in the node list")
+ else:
+ port = ssconf.SimpleStore().GetNodeDaemonPort()
+ for name, pip, sip in what['node-net-test']:
+ fail = []
+ if not utils.TcpPing(pip, port, source=my_pip):
+ fail.append("primary")
+ if sip != pip:
+ if not utils.TcpPing(sip, port, source=my_sip):
+ fail.append("secondary")
+ if fail:
+ result['node-net-test'][name] = ("failure using the %s"
+ " interface(s)" %
+ " and ".join(fail))
+
return result
return True
+def MigrateInstance(instance, target, live):
+ """Migrates an instance to another node.
+
+ """
+ hyper = hypervisor.GetHypervisor()
+
+ try:
+ hyper.MigrateInstance(instance, target, live)
+ except errors.HypervisorError, err:
+ msg = "Failed to migrate instance: %s" % str(err)
+ logger.Error(msg)
+ return (False, msg)
+ return (True, "Migration successfull")
+
+
def CreateBlockDevice(disk, size, owner, on_primary, info):
"""Creates a block device for an instance.
constants.CLUSTER_CONF_FILE,
constants.ETC_HOSTS,
constants.SSH_KNOWN_HOSTS_FILE,
+ constants.VNC_PASSWORD_FILE,
]
allowed_files.extend(ssconf.SimpleStore().GetFileList())
if file_name not in allowed_files:
return detail
-def _OSSearch(name, search_path=None):
- """Search for OSes with the given name in the search_path.
-
- Args:
- name: The name of the OS to look for
- search_path: List of dirs to search (defaults to constants.OS_SEARCH_PATH)
-
- Returns:
- The base_dir the OS resides in
-
- """
- if search_path is None:
- search_path = constants.OS_SEARCH_PATH
-
- for dir_name in search_path:
- t_os_dir = os.path.sep.join([dir_name, name])
- if os.path.isdir(t_os_dir):
- return dir_name
-
- return None
-
-
def _OSOndiskVersion(name, os_dir):
"""Compute and return the API version of a given OS.
"""
if base_dir is None:
- base_dir = _OSSearch(name)
-
- if base_dir is None:
- raise errors.InvalidOS(name, None, "OS dir not found in search path")
+ os_dir = utils.FindFile(name, constants.OS_SEARCH_PATH, os.path.isdir)
+ if os_dir is None:
+ raise errors.InvalidOS(name, None, "OS dir not found in search path")
+ else:
+ os_dir = os.path.sep.join([base_dir, name])
- os_dir = os.path.sep.join([base_dir, name])
api_version = _OSOndiskVersion(name, os_dir)
if api_version != constants.OS_API_VERSION:
api_version=api_version)
+def GrowBlockDevice(disk, amount):
+ """Grow a stack of block devices.
+
+ This function is called recursively, with the childrens being the
+ first one resize.
+
+ Args:
+ disk: the disk to be grown
+
+ Returns: a tuple of (status, result), with:
+ status: the result (true/false) of the operation
+ result: the error message if the operation failed, otherwise not used
+
+ """
+ r_dev = _RecursiveFindBD(disk)
+ if r_dev is None:
+ return False, "Cannot find block device %s" % (disk,)
+
+ try:
+ r_dev.Grow(amount)
+ except errors.BlockDeviceError, err:
+ return False, str(err)
+
+ return True, None
+
+
def SnapshotBlockDevice(disk):
"""Create a snapshot copy of a block device.
destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
destdir, destdir, destfile)
- remotecmd = ssh.BuildSSHCmd(dest_node, constants.GANETI_RUNAS, destcmd)
-
-
+ remotecmd = _GetSshRunner().BuildCmd(dest_node, constants.GANETI_RUNAS,
+ destcmd)
# all commands have been checked, so we're safe to combine them
command = '|'.join([expcmd, comprcmd, utils.ShellQuoteArgs(remotecmd)])
config.set(constants.INISECT_INS, 'memory', '%d' % instance.memory)
config.set(constants.INISECT_INS, 'vcpus', '%d' % instance.vcpus)
config.set(constants.INISECT_INS, 'disk_template', instance.disk_template)
+
+ nic_count = 0
for nic_count, nic in enumerate(instance.nics):
config.set(constants.INISECT_INS, 'nic%d_mac' %
nic_count, '%s' % nic.mac)
# TODO: redundant: on load can read nics until it doesn't exist
config.set(constants.INISECT_INS, 'nic_count' , '%d' % nic_count)
+ disk_count = 0
for disk_count, disk in enumerate(snap_disks):
config.set(constants.INISECT_INS, 'disk%d_ivname' % disk_count,
('%s' % disk.iv_name))
os.mkdir(constants.LOG_OS_DIR, 0750)
destcmd = utils.BuildShellCmd('cat %s', src_image)
- remotecmd = ssh.BuildSSHCmd(src_node, constants.GANETI_RUNAS, destcmd)
+ remotecmd = _GetSshRunner().BuildCmd(src_node, constants.GANETI_RUNAS,
+ destcmd)
comprcmd = "gunzip"
impcmd = utils.BuildShellCmd("(cd %s; %s -i %s -b %s -s %s &>%s)",
return result
+def _TransformFileStorageDir(file_storage_dir):
+ """Checks whether given file_storage_dir is valid.
+
+ Checks wheter the given file_storage_dir is within the cluster-wide
+ default file_storage_dir stored in SimpleStore. Only paths under that
+ directory are allowed.
+
+ Args:
+ file_storage_dir: string with path
+
+ Returns:
+ normalized file_storage_dir (string) if valid, None otherwise
+
+ """
+ file_storage_dir = os.path.normpath(file_storage_dir)
+ base_file_storage_dir = ssconf.SimpleStore().GetFileStorageDir()
+ if (not os.path.commonprefix([file_storage_dir, base_file_storage_dir]) ==
+ base_file_storage_dir):
+ logger.Error("file storage directory '%s' is not under base file"
+ " storage directory '%s'" %
+ (file_storage_dir, base_file_storage_dir))
+ return None
+ return file_storage_dir
+
+
+def CreateFileStorageDir(file_storage_dir):
+ """Create file storage directory.
+
+ Args:
+ file_storage_dir: string containing the path
+
+ Returns:
+ tuple with first element a boolean indicating wheter dir
+ creation was successful or not
+
+ """
+ file_storage_dir = _TransformFileStorageDir(file_storage_dir)
+ result = True,
+ if not file_storage_dir:
+ result = False,
+ else:
+ if os.path.exists(file_storage_dir):
+ if not os.path.isdir(file_storage_dir):
+ logger.Error("'%s' is not a directory" % file_storage_dir)
+ result = False,
+ else:
+ try:
+ os.makedirs(file_storage_dir, 0750)
+ except OSError, err:
+ logger.Error("Cannot create file storage directory '%s': %s" %
+ (file_storage_dir, err))
+ result = False,
+ return result
+
+
+def RemoveFileStorageDir(file_storage_dir):
+ """Remove file storage directory.
+
+ Remove it only if it's empty. If not log an error and return.
+
+ Args:
+ file_storage_dir: string containing the path
+
+ Returns:
+ tuple with first element a boolean indicating wheter dir
+ removal was successful or not
+
+ """
+ file_storage_dir = _TransformFileStorageDir(file_storage_dir)
+ result = True,
+ if not file_storage_dir:
+ result = False,
+ else:
+ if os.path.exists(file_storage_dir):
+ if not os.path.isdir(file_storage_dir):
+ logger.Error("'%s' is not a directory" % file_storage_dir)
+ result = False,
+ # deletes dir only if empty, otherwise we want to return False
+ try:
+ os.rmdir(file_storage_dir)
+ except OSError, err:
+ logger.Error("Cannot remove file storage directory '%s': %s" %
+ (file_storage_dir, err))
+ result = False,
+ return result
+
+
+def RenameFileStorageDir(old_file_storage_dir, new_file_storage_dir):
+ """Rename the file storage directory.
+
+ Args:
+ old_file_storage_dir: string containing the old path
+ new_file_storage_dir: string containing the new path
+
+ Returns:
+ tuple with first element a boolean indicating wheter dir
+ rename was successful or not
+
+ """
+ old_file_storage_dir = _TransformFileStorageDir(old_file_storage_dir)
+ new_file_storage_dir = _TransformFileStorageDir(new_file_storage_dir)
+ result = True,
+ if not old_file_storage_dir or not new_file_storage_dir:
+ result = False,
+ else:
+ if not os.path.exists(new_file_storage_dir):
+ if os.path.isdir(old_file_storage_dir):
+ try:
+ os.rename(old_file_storage_dir, new_file_storage_dir)
+ except OSError, err:
+ logger.Error("Cannot rename '%s' to '%s': %s"
+ % (old_file_storage_dir, new_file_storage_dir, err))
+ result = False,
+ else:
+ logger.Error("'%s' is not a directory" % old_file_storage_dir)
+ result = False,
+ else:
+ if os.path.exists(old_file_storage_dir):
+ logger.Error("Cannot rename '%s' to '%s'. Both locations exist." %
+ old_file_storage_dir, new_file_storage_dir)
+ result = False,
+ return result
+
+
+def CloseBlockDevices(disks):
+ """Closes the given block devices.
+
+ This means they will be switched to secondary mode (in case of DRBD).
+
+ """
+ bdevs = []
+ for cf in disks:
+ rd = _RecursiveFindBD(cf)
+ if rd is None:
+ return (False, "Can't find device %s" % cf)
+ bdevs.append(rd)
+
+ msg = []
+ for rd in bdevs:
+ try:
+ rd.Close()
+ except errors.BlockDeviceError, err:
+ msg.append(str(err))
+ if msg:
+ return (False, "Can't make devices secondary: %s" % ",".join(msg))
+ else:
+ return (True, "All devices secondary")
+
+
class HooksRunner(object):
"""Hook runner.
Args:
- hooks_base_dir: if not None, this overrides the
constants.HOOKS_BASE_DIR (useful for unittests)
- - logs_base_dir: if not None, this overrides the
- constants.LOG_HOOKS_DIR (useful for unittests)
- - logging: enable or disable logging of script output
"""
if hooks_base_dir is None:
"""Exec one hook script.
Args:
- - phase: the phase
- script: the full path to the script
- env: the environment with which to exec the script
return rr
+class IAllocatorRunner(object):
+ """IAllocator runner.
+
+ This class is instantiated on the node side (ganeti-noded) and not on
+ the master side.
+
+ """
+ def Run(self, name, idata):
+ """Run an iallocator script.
+
+ Return value: tuple of:
+ - run status (one of the IARUN_ constants)
+ - stdout
+ - stderr
+ - fail reason (as from utils.RunResult)
+
+ """
+ alloc_script = utils.FindFile(name, constants.IALLOCATOR_SEARCH_PATH,
+ os.path.isfile)
+ if alloc_script is None:
+ return (constants.IARUN_NOTFOUND, None, None, None)
+
+ fd, fin_name = tempfile.mkstemp(prefix="ganeti-iallocator.")
+ try:
+ os.write(fd, idata)
+ os.close(fd)
+ result = utils.RunCmd([alloc_script, fin_name])
+ if result.failed:
+ return (constants.IARUN_FAILURE, result.stdout, result.stderr,
+ result.fail_reason)
+ finally:
+ os.unlink(fin_name)
+
+ return (constants.IARUN_SUCCESS, result.stdout, result.stderr, None)
+
+
class DevCacheManager(object):
"""Simple class for managing a cache of block device information.
projects / ganeti-local / blobdiff