"""Ganeti node daemon"""
+# functions in this module need to have a given name structure, so:
+# pylint: disable-msg=C0103
+
import os
import sys
import resource
from ganeti import objects
from ganeti import errors
from ganeti import ssconf
+from ganeti import utils
from twisted.spread import pb
from twisted.internet import reactor
class ServerContextFactory:
- def getContext(self):
+ """SSL context factory class that uses a given certificate.
+
+ """
+ @staticmethod
+ def getContext():
+ """Return a customized context.
+
+ The context will be set to use our certificate.
+
+ """
ctx = SSL.Context(SSL.TLSv1_METHOD)
ctx.use_certificate_file(constants.SSL_CERT_FILE)
ctx.use_privatekey_file(constants.SSL_CERT_FILE)
return ctx
class ServerObject(pb.Avatar):
+ """The server implementation.
+
+ This class holds all methods exposed over the RPC interface.
+
+ """
def __init__(self, name):
self.name = name
def perspectiveMessageReceived(self, broker, message, args, kw):
- """This method is called when a network message is received.
-
- I will call::
-
- | self.perspective_%(message)s(*broker.unserialize(args),
- | **broker.unserialize(kw))
+ """Custom message dispatching function.
- to handle the method; subclasses of Avatar are expected to
- implement methods of this naming convention.
+ This function overrides the pb.Avatar function in order to provide
+ a simple form of exception passing (as text only).
"""
args = broker.unserialize(args, self)
# the new block devices --------------------------
- def perspective_blockdev_create(self, params):
- bdev_s, size, on_primary = params
- bdev = objects.ConfigObject.Loads(bdev_s)
+ @staticmethod
+ def perspective_blockdev_create(params):
+ """Create a block device.
+
+ """
+ bdev_s, size, owner, on_primary, info = params
+ bdev = objects.Disk.FromDict(bdev_s)
if bdev is None:
raise ValueError("can't unserialize data!")
- return backend.CreateBlockDevice(bdev, size, on_primary)
+ return backend.CreateBlockDevice(bdev, size, owner, on_primary, info)
+ @staticmethod
+ def perspective_blockdev_remove(params):
+ """Remove a block device.
- def perspective_blockdev_remove(self, params):
+ """
bdev_s = params[0]
- bdev = objects.ConfigObject.Loads(bdev_s)
+ bdev = objects.Disk.FromDict(bdev_s)
return backend.RemoveBlockDevice(bdev)
+ @staticmethod
+ def perspective_blockdev_rename(params):
+ """Remove a block device.
- def perspective_blockdev_assemble(self, params):
- bdev_s, on_primary = params
- bdev = objects.ConfigObject.Loads(bdev_s)
+ """
+ devlist = [(objects.Disk.FromDict(ds), uid) for ds, uid in params]
+ return backend.RenameBlockDevices(devlist)
+
+ @staticmethod
+ def perspective_blockdev_assemble(params):
+ """Assemble a block device.
+
+ """
+ bdev_s, owner, on_primary = params
+ bdev = objects.Disk.FromDict(bdev_s)
if bdev is None:
raise ValueError("can't unserialize data!")
- return backend.AssembleBlockDevice(bdev, on_primary)
+ return backend.AssembleBlockDevice(bdev, owner, on_primary)
+ @staticmethod
+ def perspective_blockdev_shutdown(params):
+ """Shutdown a block device.
- def perspective_blockdev_shutdown(self, params):
+ """
bdev_s = params[0]
- bdev = objects.ConfigObject.Loads(bdev_s)
+ bdev = objects.Disk.FromDict(bdev_s)
if bdev is None:
raise ValueError("can't unserialize data!")
return backend.ShutdownBlockDevice(bdev)
+ @staticmethod
+ def perspective_blockdev_addchildren(params):
+ """Add a child to a mirror device.
+
+ Note: this is only valid for mirror devices. It's the caller's duty
+ to send a correct disk, otherwise we raise an error.
- def perspective_blockdev_addchild(self, params):
+ """
bdev_s, ndev_s = params
- bdev = objects.ConfigObject.Loads(bdev_s)
- ndev = objects.ConfigObject.Loads(ndev_s)
- if bdev is None or ndev is None:
+ bdev = objects.Disk.FromDict(bdev_s)
+ ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s]
+ if bdev is None or ndevs.count(None) > 0:
raise ValueError("can't unserialize data!")
- return backend.MirrorAddChild(bdev, ndev)
+ return backend.MirrorAddChildren(bdev, ndevs)
+ @staticmethod
+ def perspective_blockdev_removechildren(params):
+ """Remove a child from a mirror device.
- def perspective_blockdev_removechild(self, params):
+ This is only valid for mirror devices, of course. It's the callers
+ duty to send a correct disk, otherwise we raise an error.
+
+ """
bdev_s, ndev_s = params
- bdev = objects.ConfigObject.Loads(bdev_s)
- ndev = objects.ConfigObject.Loads(ndev_s)
- if bdev is None or ndev is None:
+ bdev = objects.Disk.FromDict(bdev_s)
+ ndevs = [objects.Disk.FromDict(disk_s) for disk_s in ndev_s]
+ if bdev is None or ndevs.count(None) > 0:
raise ValueError("can't unserialize data!")
- return backend.MirrorRemoveChild(bdev, ndev)
+ return backend.MirrorRemoveChildren(bdev, ndevs)
- def perspective_blockdev_getmirrorstatus(self, params):
- disks = [objects.ConfigObject.Loads(dsk_s)
+ @staticmethod
+ def perspective_blockdev_getmirrorstatus(params):
+ """Return the mirror status for a list of disks.
+
+ """
+ disks = [objects.Disk.FromDict(dsk_s)
for dsk_s in params]
return backend.GetMirrorStatus(disks)
- def perspective_blockdev_find(self, params):
- disk = objects.ConfigObject.Loads(params[0])
+ @staticmethod
+ def perspective_blockdev_find(params):
+ """Expose the FindBlockDevice functionality for a disk.
+
+ This will try to find but not activate a disk.
+
+ """
+ disk = objects.Disk.FromDict(params[0])
return backend.FindBlockDevice(disk)
- def perspective_blockdev_snapshot(self, params):
- cfbd = objects.ConfigObject.Loads(params[0])
+ @staticmethod
+ def perspective_blockdev_snapshot(params):
+ """Create a snapshot device.
+
+ Note that this is only valid for LVM disks, if we get passed
+ something else we raise an exception. The snapshot device can be
+ remove by calling the generic block device remove call.
+
+ """
+ cfbd = objects.Disk.FromDict(params[0])
return backend.SnapshotBlockDevice(cfbd)
# export/import --------------------------
- def perspective_snapshot_export(self, params):
- disk = objects.ConfigObject.Loads(params[0])
+ @staticmethod
+ def perspective_snapshot_export(params):
+ """Export a given snapshot.
+
+ """
+ disk = objects.Disk.FromDict(params[0])
dest_node = params[1]
- instance = objects.ConfigObject.Loads(params[2])
- return backend.ExportSnapshot(disk,dest_node,instance)
+ instance = objects.Instance.FromDict(params[2])
+ return backend.ExportSnapshot(disk, dest_node, instance)
+
+ @staticmethod
+ def perspective_finalize_export(params):
+ """Expose the finalize export functionality.
- def perspective_finalize_export(self, params):
- instance = objects.ConfigObject.Loads(params[0])
- snap_disks = [objects.ConfigObject.Loads(str_data)
+ """
+ instance = objects.Instance.FromDict(params[0])
+ snap_disks = [objects.Disk.FromDict(str_data)
for str_data in params[1]]
return backend.FinalizeExport(instance, snap_disks)
- def perspective_export_info(self, params):
- dir = params[0]
- einfo = backend.ExportInfo(dir)
+ @staticmethod
+ def perspective_export_info(params):
+ """Query information about an existing export on this node.
+
+ The given path may not contain an export, in which case we return
+ None.
+
+ """
+ path = params[0]
+ einfo = backend.ExportInfo(path)
if einfo is None:
return einfo
return einfo.Dumps()
- def perspective_export_list(self, params):
+ @staticmethod
+ def perspective_export_list(params):
+ """List the available exports on this node.
+
+ Note that as opposed to export_info, which may query data about an
+ export in any path, this only queries the standard Ganeti path
+ (constants.EXPORT_DIR).
+
+ """
return backend.ListExports()
- def perspective_export_remove(self, params):
+ @staticmethod
+ def perspective_export_remove(params):
+ """Remove an export.
+
+ """
export = params[0]
return backend.RemoveExport(export)
# volume --------------------------
- def perspective_volume_list(self, params):
+ @staticmethod
+ def perspective_volume_list(params):
+ """Query the list of logical volumes in a given volume group.
+
+ """
vgname = params[0]
return backend.GetVolumeList(vgname)
- def perspective_vg_list(self, params):
+ @staticmethod
+ def perspective_vg_list(params):
+ """Query the list of volume groups.
+
+ """
return backend.ListVolumeGroups()
# bridge --------------------------
- def perspective_bridges_exist(self, params):
+ @staticmethod
+ def perspective_bridges_exist(params):
+ """Check if all bridges given exist on this node.
+
+ """
bridges_list = params[0]
return backend.BridgesExist(bridges_list)
# instance --------------------------
- def perspective_instance_os_add(self, params):
+ @staticmethod
+ def perspective_instance_os_add(params):
+ """Install an OS on a given instance.
+
+ """
inst_s, os_disk, swap_disk = params
- inst = objects.ConfigObject.Loads(inst_s)
+ inst = objects.Instance.FromDict(inst_s)
return backend.AddOSToInstance(inst, os_disk, swap_disk)
- def perspective_instance_os_import(self, params):
+ @staticmethod
+ def perspective_instance_run_rename(params):
+ """Runs the OS rename script for an instance.
+
+ """
+ inst_s, old_name, os_disk, swap_disk = params
+ inst = objects.Instance.FromDict(inst_s)
+ return backend.RunRenameInstance(inst, old_name, os_disk, swap_disk)
+
+ @staticmethod
+ def perspective_instance_os_import(params):
+ """Run the import function of an OS onto a given instance.
+
+ """
inst_s, os_disk, swap_disk, src_node, src_image = params
- inst = objects.ConfigObject.Loads(inst_s)
+ inst = objects.Instance.FromDict(inst_s)
return backend.ImportOSIntoInstance(inst, os_disk, swap_disk,
src_node, src_image)
- def perspective_instance_shutdown(self, params):
- instance = objects.ConfigObject.Loads(params[0])
+ @staticmethod
+ def perspective_instance_shutdown(params):
+ """Shutdown an instance.
+
+ """
+ instance = objects.Instance.FromDict(params[0])
return backend.ShutdownInstance(instance)
- def perspective_instance_start(self, params):
- instance = objects.ConfigObject.Loads(params[0])
+ @staticmethod
+ def perspective_instance_start(params):
+ """Start an instance.
+
+ """
+ instance = objects.Instance.FromDict(params[0])
extra_args = params[1]
return backend.StartInstance(instance, extra_args)
- def perspective_instance_info(self, params):
+ @staticmethod
+ def perspective_instance_reboot(params):
+ """Reboot an instance.
+
+ """
+ instance = objects.Instance.FromDict(params[0])
+ reboot_type = params[1]
+ extra_args = params[2]
+ return backend.RebootInstance(instance, reboot_type, extra_args)
+
+ @staticmethod
+ def perspective_instance_info(params):
+ """Query instance information.
+
+ """
return backend.GetInstanceInfo(params[0])
- def perspective_all_instances_info(self, params):
+ @staticmethod
+ def perspective_all_instances_info(params):
+ """Query information about all instances.
+
+ """
return backend.GetAllInstancesInfo()
- def perspective_instance_list(self, params):
+ @staticmethod
+ def perspective_instance_list(params):
+ """Query the list of running instances.
+
+ """
return backend.GetInstanceList()
# node --------------------------
- def perspective_node_info(self, params):
+ @staticmethod
+ def perspective_node_tcp_ping(params):
+ """Do a TcpPing on the remote node.
+
+ """
+ return utils.TcpPing(params[0], params[1], params[2],
+ timeout=params[3], live_port_needed=params[4])
+
+ @staticmethod
+ def perspective_node_info(params):
+ """Query node information.
+
+ """
vgname = params[0]
return backend.GetNodeInfo(vgname)
- def perspective_node_add(self, params):
+ @staticmethod
+ def perspective_node_add(params):
+ """Complete the registration of this node in the cluster.
+
+ """
return backend.AddNode(params[0], params[1], params[2],
params[3], params[4], params[5])
- def perspective_node_verify(self, params):
+ @staticmethod
+ def perspective_node_verify(params):
+ """Run a verify sequence on this node.
+
+ """
return backend.VerifyNode(params[0])
- def perspective_node_start_master(self, params):
+ @staticmethod
+ def perspective_node_start_master(params):
+ """Promote this node to master status.
+
+ """
return backend.StartMaster()
- def perspective_node_stop_master(self, params):
+ @staticmethod
+ def perspective_node_stop_master(params):
+ """Demote this node from master status.
+
+ """
return backend.StopMaster()
- def perspective_node_leave_cluster(self, params):
+ @staticmethod
+ def perspective_node_leave_cluster(params):
+ """Cleanup after leaving a cluster.
+
+ """
return backend.LeaveCluster()
- def perspective_node_volumes(self, params):
+ @staticmethod
+ def perspective_node_volumes(params):
+ """Query the list of all logical volume groups.
+
+ """
return backend.NodeVolumes()
# cluster --------------------------
- def perspective_version(self, params):
+ @staticmethod
+ def perspective_version(params):
+ """Query version information.
+
+ """
return constants.PROTOCOL_VERSION
- def perspective_upload_file(self, params):
+ @staticmethod
+ def perspective_upload_file(params):
+ """Upload a file.
+
+ Note that the backend implementation imposes strict rules on which
+ files are accepted.
+
+ """
return backend.UploadFile(*params)
# os -----------------------
- def perspective_os_diagnose(self, params):
- os_list = backend.DiagnoseOS()
- if not os_list:
- # this catches also return values of 'False',
- # for which we can't iterate over
- return os_list
- result = []
- for data in os_list:
- if isinstance(data, objects.OS):
- result.append(data.Dumps())
- elif isinstance(data, errors.InvalidOS):
- result.append(data.args)
- else:
- raise errors.ProgrammerError, ("Invalid result from backend.DiagnoseOS"
- " (class %s, %s)" %
- (str(data.__class__), data))
-
- return result
-
- def perspective_os_get(self, params):
+ @staticmethod
+ def perspective_os_diagnose(params):
+ """Query detailed information about existing OSes.
+
+ """
+ return [os.ToDict() for os in backend.DiagnoseOS()]
+
+ @staticmethod
+ def perspective_os_get(params):
+ """Query information about a given OS.
+
+ """
name = params[0]
try:
- os = backend.OSFromDisk(name).Dumps()
+ os_obj = backend.OSFromDisk(name)
except errors.InvalidOS, err:
- os = err.args
- return os
+ os_obj = objects.OS.FromInvalidOS(err)
+ return os_obj.ToDict()
# hooks -----------------------
- def perspective_hooks_runner(self, params):
+ @staticmethod
+ def perspective_hooks_runner(params):
+ """Run hook scripts.
+
+ """
hpath, phase, env = params
hr = backend.HooksRunner()
return hr.RunHooks(hpath, phase, env)
+ # test -----------------------
+
+ @staticmethod
+ def perspective_test_delay(params):
+ """Run test delay.
+
+ """
+ duration = params[0]
+ return utils.TestDelay(duration)
+
class MyRealm:
+ """Simple realm that forwards all requests to a ServerObject.
+
+ """
__implements__ = portal.IRealm
+
def requestAvatar(self, avatarId, mind, *interfaces):
+ """Return an avatar based on our ServerObject class.
+
+ """
if pb.IPerspective not in interfaces:
raise NotImplementedError
return pb.IPerspective, ServerObject(avatarId), lambda:None
def main():
+ """Main function for the node daemon.
+
+ """
options, args = ParseOptions()
+ utils.debug = options.debug
for fname in (constants.SSL_CERT_FILE,):
if not os.path.isfile(fname):
print "config %s not there, will not run." % fname
try:
pid = os.fork()
except OSError, e:
- raise Exception, "%s [%d]" % (e.strerror, e.errno)
+ raise Exception("%s [%d]" % (e.strerror, e.errno))
if (pid == 0): # The first child.
os.setsid()
try:
pid = os.fork() # Fork a second child.
except OSError, e:
- raise Exception, "%s [%d]" % (e.strerror, e.errno)
+ raise Exception("%s [%d]" % (e.strerror, e.errno))
if (pid == 0): # The second child.
os.chdir(WORKDIR)
os.umask(UMASK)
os.close(fd)
except OSError: # ERROR, fd wasn't open to begin with (ignored)
pass
- os.open(REDIRECT_TO, os.O_RDWR|os.O_CREAT|os.O_APPEND) # standard input (0)
+ os.open(REDIRECT_TO, os.O_RDWR|os.O_CREAT|os.O_APPEND, 0600)
# Duplicate standard input to standard output and standard error.
os.dup2(0, 1) # standard output (1)
os.dup2(0, 2) # standard error (2)
return(0)
-if __name__=='__main__':
+if __name__ == '__main__':
main()
projects / ganeti-local / blobdiff