-#!/usr/bin/python
+#
#
# Copyright (C) 2006, 2007 Google Inc.
def AddNode(dsa, dsapub, rsa, rsapub, sshkey, sshpub):
- """ adds the node to the cluster
- - updates the hostkey
- - adds the ssh-key
- - sets the node id
- - sets the node status to installed
-
- """
- f = open("/etc/ssh/ssh_host_rsa_key", 'w')
- f.write(rsa)
- f.close()
-
- f = open("/etc/ssh/ssh_host_rsa_key.pub", 'w')
- f.write(rsapub)
- f.close()
-
- f = open("/etc/ssh/ssh_host_dsa_key", 'w')
- f.write(dsa)
- f.close()
+ """Joins this node to the cluster.
- f = open("/etc/ssh/ssh_host_dsa_key.pub", 'w')
- f.write(dsapub)
- f.close()
+ This does the following:
+ - updates the hostkeys of the machine (rsa and dsa)
+ - adds the ssh private key to the user
+ - adds the ssh public key to the users' authorized_keys file
- if not os.path.isdir("/root/.ssh"):
- os.mkdir("/root/.ssh")
+ """
+ sshd_keys = [(constants.SSH_HOST_RSA_PRIV, rsa, 0600),
+ (constants.SSH_HOST_RSA_PUB, rsapub, 0644),
+ (constants.SSH_HOST_DSA_PRIV, dsa, 0600),
+ (constants.SSH_HOST_DSA_PUB, dsapub, 0644)]
+ for name, content, mode in sshd_keys:
+ utils.WriteFile(name, data=content, mode=mode)
- f = open("/root/.ssh/id_dsa", 'w')
- f.write(sshkey)
- f.close()
+ try:
+ priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS,
+ mkdir=True)
+ except errors.OpExecError, err:
+ logger.Error("Error while processing user ssh files: %s" % err)
+ return False
- f = open("/root/.ssh/id_dsa.pub", 'w')
- f.write(sshpub)
- f.close()
+ for name, content in [(priv_key, sshkey), (pub_key, sshpub)]:
+ utils.WriteFile(name, data=content, mode=0600)
- f = open('/root/.ssh/id_dsa.pub', 'r')
- try:
- utils.AddAuthorizedKey('/root/.ssh/authorized_keys', f.read(8192))
- finally:
- f.close()
+ utils.AddAuthorizedKey(auth_keys, sshpub)
utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
"""Cleans up the current node and prepares it to be removed from the cluster.
"""
- if os.path.exists(constants.DATA_DIR):
- for dirpath, dirnames, filenames in os.walk(constants.DATA_DIR):
- if dirpath == constants.DATA_DIR:
- for i in filenames:
- os.unlink(os.path.join(dirpath, i))
+ if os.path.isdir(constants.DATA_DIR):
+ for rel_name in utils.ListVisibleFiles(constants.DATA_DIR):
+ full_name = os.path.join(constants.DATA_DIR, rel_name)
+ if os.path.isfile(full_name) and not os.path.islink(full_name):
+ utils.RemoveFile(full_name)
+
+
+ try:
+ priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS)
+ except errors.OpExecError, err:
+ logger.Error("Error while processing ssh files: %s" % err)
+ return
- f = open('/root/.ssh/id_dsa.pub', 'r')
+ f = open(pub_key, 'r')
try:
- utils.RemoveAuthorizedKey('/root/.ssh/authorized_keys', f.read(8192))
+ utils.RemoveAuthorizedKey(auth_keys, f.read(8192))
finally:
f.close()
- utils.RemoveFile('/root/.ssh/id_dsa')
- utils.RemoveFile('/root/.ssh/id_dsa.pub')
+ utils.RemoveFile(priv_key)
+ utils.RemoveFile(pub_key)
def GetNodeInfo(vgname):
- """ gives back a hash with different informations
- about the node
+ """Gives back a hash with different informations about the node.
Returns:
{ 'vg_size' : xxx, 'vg_free' : xxx, 'memory_domain0': xxx,
if hyp_info is not None:
outputarray.update(hyp_info)
+ f = open("/proc/sys/kernel/random/boot_id", 'r')
+ try:
+ outputarray["bootid"] = f.read(128).rstrip("\n")
+ finally:
+ f.close()
+
return outputarray
def ListVolumeGroups():
- """List the volume groups and their size
+ """List the volume groups and their size.
Returns:
Dictionary with keys volume name and values the size of the volume
def BridgesExist(bridges_list):
- """Check if a list of bridges exist on the current node
+ """Check if a list of bridges exist on the current node.
Returns:
True if all of them exist, false otherwise
def GetInstanceList():
- """ provides a list of instances
+ """Provides a list of instances.
Returns:
A list of all running instances on the current node
def GetInstanceInfo(instance):
- """ gives back the informations about an instance
- as a dictonary
+ """Gives back the informations about an instance as a dictionary.
Args:
instance: name of the instance (ex. instance1.example.com)
def AddOSToInstance(instance, os_disk, swap_disk):
- """Add an os to an instance.
+ """Add an OS to an instance.
Args:
instance: the instance object
return True
-def CreateBlockDevice(disk, size, on_primary, info):
+def RebootInstance(instance, reboot_type, extra_args):
+ """Reboot an instance.
+
+ Args:
+ instance - name of instance to reboot
+ reboot_type - how to reboot [soft,hard,full]
+
+ """
+ running_instances = GetInstanceList()
+
+ if instance.name not in running_instances:
+ logger.Error("Cannot reboot instance that is not running")
+ return False
+
+ hyper = hypervisor.GetHypervisor()
+ if reboot_type == constants.INSTANCE_REBOOT_SOFT:
+ try:
+ hyper.RebootInstance(instance)
+ except errors.HypervisorError, err:
+ logger.Error("Failed to soft reboot instance: %s" % err)
+ return False
+ elif reboot_type == constants.INSTANCE_REBOOT_HARD:
+ try:
+ ShutdownInstance(instance)
+ StartInstance(instance, extra_args)
+ except errors.HypervisorError, err:
+ logger.Error("Failed to hard reboot instance: %s" % err)
+ return False
+ else:
+ raise errors.ParameterError("reboot_type invalid")
+
+
+ return True
+
+
+def CreateBlockDevice(disk, size, owner, on_primary, info):
"""Creates a block device for an instance.
Args:
clist = []
if disk.children:
for child in disk.children:
- crdev = _RecursiveAssembleBD(child, on_primary)
+ crdev = _RecursiveAssembleBD(child, owner, on_primary)
if on_primary or disk.AssembleOnSecondary():
# we need the children open in case the device itself has to
# be assembled
device.SetSyncSpeed(constants.SYNC_SPEED)
if on_primary or disk.OpenOnSecondary():
device.Open(force=True)
+ DevCacheManager.UpdateCache(device.dev_path, owner,
+ on_primary, disk.iv_name)
device.SetInfo(info)
logger.Info("Can't attach to device %s in remove" % disk)
rdev = None
if rdev is not None:
+ r_path = rdev.dev_path
result = rdev.Remove()
+ if result:
+ DevCacheManager.RemoveCache(r_path)
else:
result = True
if disk.children:
return result
-def _RecursiveAssembleBD(disk, as_primary):
+def _RecursiveAssembleBD(disk, owner, as_primary):
"""Activate a block device for an instance.
This is run on the primary and secondary nodes for an instance.
children = []
if disk.children:
for chld_disk in disk.children:
- children.append(_RecursiveAssembleBD(chld_disk, as_primary))
+ children.append(_RecursiveAssembleBD(chld_disk, owner, as_primary))
if as_primary or disk.AssembleOnSecondary():
r_dev = bdev.AttachOrAssemble(disk.dev_type, disk.physical_id, children)
r_dev.Open()
else:
r_dev.Close()
+ DevCacheManager.UpdateCache(r_dev.dev_path, owner,
+ as_primary, disk.iv_name)
+
else:
result = True
return result
-def AssembleBlockDevice(disk, as_primary):
+def AssembleBlockDevice(disk, owner, as_primary):
"""Activate a block device for an instance.
This is a wrapper over _RecursiveAssembleBD.
True for secondary nodes
"""
- result = _RecursiveAssembleBD(disk, as_primary)
+ result = _RecursiveAssembleBD(disk, owner, as_primary)
if isinstance(result, bdev.BlockDev):
result = result.dev_path
return result
"""
r_dev = _RecursiveFindBD(disk)
if r_dev is not None:
+ r_path = r_dev.dev_path
result = r_dev.Shutdown()
+ if result:
+ DevCacheManager.RemoveCache(r_path)
else:
result = True
if disk.children:
return result
-def MirrorAddChild(md_cdev, new_cdev):
- """Extend an MD raid1 array.
+def MirrorAddChildren(parent_cdev, new_cdevs):
+ """Extend a mirrored block device.
"""
- md_bdev = _RecursiveFindBD(md_cdev, allow_partial=True)
- if md_bdev is None:
- logger.Error("Can't find md device")
+ parent_bdev = _RecursiveFindBD(parent_cdev, allow_partial=True)
+ if parent_bdev is None:
+ logger.Error("Can't find parent device")
return False
- new_bdev = _RecursiveFindBD(new_cdev)
- if new_bdev is None:
- logger.Error("Can't find new device to add")
+ new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs]
+ if new_bdevs.count(None) > 0:
+ logger.Error("Can't find new device(s) to add: %s:%s" %
+ (new_bdevs, new_cdevs))
return False
- new_bdev.Open()
- md_bdev.AddChild(new_bdev)
+ parent_bdev.AddChildren(new_bdevs)
return True
-def MirrorRemoveChild(md_cdev, new_cdev):
- """Reduce an MD raid1 array.
+def MirrorRemoveChildren(parent_cdev, new_cdevs):
+ """Shrink a mirrored block device.
"""
- md_bdev = _RecursiveFindBD(md_cdev)
- if md_bdev is None:
+ parent_bdev = _RecursiveFindBD(parent_cdev)
+ if parent_bdev is None:
+ logger.Error("Can't find parent in remove children: %s" % parent_cdev)
return False
- new_bdev = _RecursiveFindBD(new_cdev)
- if new_bdev is None:
+ new_bdevs = [_RecursiveFindBD(disk) for disk in new_cdevs]
+ if new_bdevs.count(None) > 0:
+ logger.Error("Can't find some devices while removing children: %s %s" %
+ (new_cdevs, new_bdevs))
return False
- new_bdev.Open()
- md_bdev.RemoveChild(new_bdev.dev_path)
+ parent_bdev.RemoveChildren(new_bdevs)
return True
detail = str(err)
return detail
+
def _OSSearch(name, search_path=None):
"""Search for OSes with the given name in the search_path.
The base_dir the OS resides in
"""
-
if search_path is None:
search_path = constants.OS_SEARCH_PATH
return None
+
def _OSOndiskVersion(name, os_dir):
- """Compute and return the api version of a given OS.
+ """Compute and return the API version of a given OS.
- This function will try to read the api version of the os given by
+ This function will try to read the API version of the os given by
the 'name' parameter and residing in the 'os_dir' directory.
Return value will be either an integer denoting the version or None in the
case when this is not a valid OS name.
"""
-
api_file = os.path.sep.join([os_dir, "ganeti_api_version"])
try:
def DiagnoseOS(top_dirs=None):
"""Compute the validity for all OSes.
- For each name in all the given top directories (if not given defaults i
- to constants.OS_SEARCH_PATH it will return an object. If this is a valid
- os, the object will be an instance of the object.OS class. If not,
- it will be an instance of errors.InvalidOS and this signifies that
- this name does not correspond to a valid OS.
+ Returns an OS object for each name in all the given top directories
+ (if not given defaults to constants.OS_SEARCH_PATH)
Returns:
- list of objects
+ list of OS objects
"""
if top_dirs is None:
for dir in top_dirs:
if os.path.isdir(dir):
try:
- f_names = os.listdir(dir)
+ f_names = utils.ListVisibleFiles(dir)
except EnvironmentError, err:
logger.Error("Can't list the OS directory %s: %s" % (dir,str(err)))
break
os_inst = OSFromDisk(name, base_dir=dir)
result.append(os_inst)
except errors.InvalidOS, err:
- result.append(err)
+ result.append(objects.OS.FromInvalidOS(err))
return result
script)
- return objects.OS(name=name, path=os_dir,
+ return objects.OS(name=name, path=os_dir, status=constants.OS_VALID_STATUS,
create_script=os_scripts['create'],
export_script=os_scripts['export'],
import_script=os_scripts['import'],
if child.size == disk.size:
# return implies breaking the loop
return SnapshotBlockDevice(child)
- elif disk.dev_type == "lvm":
+ elif disk.dev_type == constants.LD_LV:
r_dev = _RecursiveFindBD(disk)
if r_dev is not None:
# let's stay on the safe side and ask for the full size, for now
destcmd = utils.BuildShellCmd("mkdir -p %s && cat > %s/%s",
destdir, destdir, destfile)
- remotecmd = ssh.BuildSSHCmd(dest_node, 'root', destcmd)
+ remotecmd = ssh.BuildSSHCmd(dest_node, constants.GANETI_RUNAS, destcmd)
os.mkdir(constants.LOG_OS_DIR, 0750)
destcmd = utils.BuildShellCmd('cat %s', src_image)
- remotecmd = ssh.BuildSSHCmd(src_node, 'root', destcmd)
+ remotecmd = ssh.BuildSSHCmd(src_node, constants.GANETI_RUNAS, destcmd)
comprcmd = "gunzip"
impcmd = utils.BuildShellCmd("(cd %s; %s -i %s -b %s -s %s &>%s)",
"""
if os.path.isdir(constants.EXPORT_DIR):
- return os.listdir(constants.EXPORT_DIR)
+ return utils.ListVisibleFiles(constants.EXPORT_DIR)
else:
return []
return True
+def RenameBlockDevices(devlist):
+ """Rename a list of block devices.
+
+ The devlist argument is a list of tuples (disk, new_logical,
+ new_physical). The return value will be a combined boolean result
+ (True only if all renames succeeded).
+
+ """
+ result = True
+ for disk, unique_id in devlist:
+ dev = _RecursiveFindBD(disk)
+ if dev is None:
+ result = False
+ continue
+ try:
+ old_rpath = dev.dev_path
+ dev.Rename(unique_id)
+ new_rpath = dev.dev_path
+ if old_rpath != new_rpath:
+ DevCacheManager.RemoveCache(old_rpath)
+ # FIXME: we should add the new cache information here, like:
+ # DevCacheManager.UpdateCache(new_rpath, owner, ...)
+ # but we don't have the owner here - maybe parse from existing
+ # cache? for now, we only lose lvm data when we rename, which
+ # is less critical than DRBD or MD
+ except errors.BlockDeviceError, err:
+ logger.Error("Can't rename device '%s' to '%s': %s" %
+ (dev, unique_id, err))
+ result = False
+ return result
+
+
class HooksRunner(object):
"""Hook runner.
subdir = "%s-%s.d" % (hpath, suffix)
dir_name = "%s/%s" % (self._BASE_DIR, subdir)
try:
- dir_contents = os.listdir(dir_name)
+ dir_contents = utils.ListVisibleFiles(dir_name)
except OSError, err:
# must log
return rr
rr.append(("%s/%s" % (subdir, relname), rrval, output))
return rr
+
+
+class DevCacheManager(object):
+ """Simple class for managing a chache of block device information.
+
+ """
+ _DEV_PREFIX = "/dev/"
+ _ROOT_DIR = constants.BDEV_CACHE_DIR
+
+ @classmethod
+ def _ConvertPath(cls, dev_path):
+ """Converts a /dev/name path to the cache file name.
+
+ This replaces slashes with underscores and strips the /dev
+ prefix. It then returns the full path to the cache file
+
+ """
+ if dev_path.startswith(cls._DEV_PREFIX):
+ dev_path = dev_path[len(cls._DEV_PREFIX):]
+ dev_path = dev_path.replace("/", "_")
+ fpath = "%s/bdev_%s" % (cls._ROOT_DIR, dev_path)
+ return fpath
+
+ @classmethod
+ def UpdateCache(cls, dev_path, owner, on_primary, iv_name):
+ """Updates the cache information for a given device.
+
+ """
+ fpath = cls._ConvertPath(dev_path)
+ if on_primary:
+ state = "primary"
+ else:
+ state = "secondary"
+ if iv_name is None:
+ iv_name = "not_visible"
+ fdata = "%s %s %s\n" % (str(owner), state, iv_name)
+ try:
+ utils.WriteFile(fpath, data=fdata)
+ except EnvironmentError, err:
+ logger.Error("Can't update bdev cache for %s, error %s" %
+ (dev_path, str(err)))
+
+ @classmethod
+ def RemoveCache(cls, dev_path):
+ """Remove data for a dev_path.
+
+ """
+ fpath = cls._ConvertPath(dev_path)
+ try:
+ utils.RemoveFile(fpath)
+ except EnvironmentError, err:
+ logger.Error("Can't update bdev cache for %s, error %s" %
+ (dev_path, str(err)))
projects / ganeti-local / blobdiff