root / lib / rpc.py @ 3e06e001
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# Copyright (C) 2006, 2007 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Inter-node RPC library.
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"""
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# pylint: disable-msg=C0103,R0201,R0904
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# C0103: Invalid name, since call_ are not valid
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# R0201: Method could be a function, we keep all rpcs instance methods
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# as not to change them back and forth between static/instance methods
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# if they need to start using instance attributes
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# R0904: Too many public methods
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import os |
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import logging |
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import zlib |
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import base64 |
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from ganeti import utils |
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from ganeti import objects |
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from ganeti import http |
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from ganeti import serializer |
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from ganeti import constants |
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from ganeti import errors |
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import ganeti.http.client |
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# Module level variable
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_http_manager = None
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def Init(): |
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"""Initializes the module-global HTTP client manager.
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Must be called before using any RPC function.
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"""
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global _http_manager
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assert not _http_manager, "RPC module initialized more than once" |
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_http_manager = http.client.HttpClientManager() |
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def Shutdown(): |
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"""Stops the module-global HTTP client manager.
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Must be called before quitting the program.
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"""
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global _http_manager
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if _http_manager:
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_http_manager.Shutdown() |
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_http_manager = None
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class RpcResult(object): |
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"""RPC Result class.
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This class holds an RPC result. It is needed since in multi-node
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calls we can't raise an exception just because one one out of many
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failed, and therefore we use this class to encapsulate the result.
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@ivar data: the data payload, for successful results, or None
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@type failed: boolean
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@ivar failed: whether the operation failed at transport level (not
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application level on the remote node)
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@ivar call: the name of the RPC call
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@ivar node: the name of the node to which we made the call
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@ivar offline: whether the operation failed because the node was
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offline, as opposed to actual failure; offline=True will always
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imply failed=True, in order to allow simpler checking if
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the user doesn't care about the exact failure mode
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@ivar fail_msg: the error message if the call failed
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"""
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def __init__(self, data=None, failed=False, offline=False, |
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call=None, node=None): |
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self.failed = failed
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self.offline = offline
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self.call = call
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self.node = node
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if offline:
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self.failed = True |
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self.fail_msg = "Node is marked offline" |
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self.data = self.payload = None |
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elif failed:
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self.fail_msg = self._EnsureErr(data) |
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self.data = self.payload = None |
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else:
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self.data = data
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if not isinstance(self.data, (tuple, list)): |
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self.fail_msg = ("RPC layer error: invalid result type (%s)" % |
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type(self.data)) |
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elif len(data) != 2: |
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self.fail_msg = ("RPC layer error: invalid result length (%d), " |
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"expected 2" % len(self.data)) |
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elif not self.data[0]: |
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self.fail_msg = self._EnsureErr(self.data[1]) |
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else:
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# finally success
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self.fail_msg = None |
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self.payload = data[1] |
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@staticmethod
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def _EnsureErr(val): |
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"""Helper to ensure we return a 'True' value for error."""
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if val:
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return val
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else:
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return "No error information" |
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def Raise(self, msg, prereq=False): |
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"""If the result has failed, raise an OpExecError.
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This is used so that LU code doesn't have to check for each
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result, but instead can call this function.
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"""
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if not self.fail_msg: |
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return
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if not msg: # one could pass None for default message |
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msg = ("Call '%s' to node '%s' has failed: %s" %
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(self.call, self.node, self.fail_msg)) |
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else:
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msg = "%s: %s" % (msg, self.fail_msg) |
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if prereq:
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ec = errors.OpPrereqError |
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else:
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ec = errors.OpExecError |
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raise ec(msg)
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def RemoteFailMsg(self): |
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"""Check if the remote procedure failed.
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@return: the fail_msg attribute
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"""
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return self.fail_msg |
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class Client: |
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"""RPC Client class.
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This class, given a (remote) method name, a list of parameters and a
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list of nodes, will contact (in parallel) all nodes, and return a
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dict of results (key: node name, value: result).
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One current bug is that generic failure is still signaled by
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'False' result, which is not good. This overloading of values can
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cause bugs.
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"""
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def __init__(self, procedure, body, port): |
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self.procedure = procedure
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self.body = body
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self.port = port
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self.nc = {}
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self._ssl_params = \
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http.HttpSslParams(ssl_key_path=constants.SSL_CERT_FILE, |
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ssl_cert_path=constants.SSL_CERT_FILE) |
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def ConnectList(self, node_list, address_list=None): |
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"""Add a list of nodes to the target nodes.
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@type node_list: list
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@param node_list: the list of node names to connect
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@type address_list: list or None
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@keyword address_list: either None or a list with node addresses,
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which must have the same length as the node list
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"""
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if address_list is None: |
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address_list = [None for _ in node_list] |
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else:
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assert len(node_list) == len(address_list), \ |
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"Name and address lists should have the same length"
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for node, address in zip(node_list, address_list): |
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self.ConnectNode(node, address)
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def ConnectNode(self, name, address=None): |
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"""Add a node to the target list.
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@type name: str
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@param name: the node name
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@type address: str
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@keyword address: the node address, if known
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"""
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if address is None: |
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address = name |
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self.nc[name] = \
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http.client.HttpClientRequest(address, self.port, http.HTTP_PUT,
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"/%s" % self.procedure, |
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post_data=self.body,
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ssl_params=self._ssl_params,
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ssl_verify_peer=True)
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def GetResults(self): |
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"""Call nodes and return results.
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@rtype: list
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@return: List of RPC results
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"""
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assert _http_manager, "RPC module not initialized" |
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_http_manager.ExecRequests(self.nc.values())
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results = {} |
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for name, req in self.nc.iteritems(): |
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if req.success and req.resp_status_code == http.HTTP_OK: |
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results[name] = RpcResult(data=serializer.LoadJson(req.resp_body), |
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node=name, call=self.procedure)
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continue
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# TODO: Better error reporting
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if req.error:
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msg = req.error |
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else:
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msg = req.resp_body |
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logging.error("RPC error in %s from node %s: %s",
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self.procedure, name, msg)
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results[name] = RpcResult(data=msg, failed=True, node=name,
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call=self.procedure)
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return results
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class RpcRunner(object): |
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"""RPC runner class"""
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def __init__(self, cfg): |
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"""Initialized the rpc runner.
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@type cfg: C{config.ConfigWriter}
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@param cfg: the configuration object that will be used to get data
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about the cluster
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"""
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self._cfg = cfg
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self.port = utils.GetNodeDaemonPort()
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def _InstDict(self, instance, hvp=None, bep=None): |
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"""Convert the given instance to a dict.
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This is done via the instance's ToDict() method and additionally
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we fill the hvparams with the cluster defaults.
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@type instance: L{objects.Instance}
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@param instance: an Instance object
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@type hvp: dict or None
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@param hvp: a dictionary with overridden hypervisor parameters
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@type bep: dict or None
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@param bep: a dictionary with overridden backend parameters
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@rtype: dict
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@return: the instance dict, with the hvparams filled with the
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cluster defaults
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"""
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idict = instance.ToDict() |
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cluster = self._cfg.GetClusterInfo()
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idict["hvparams"] = cluster.FillHV(instance)
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if hvp is not None: |
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idict["hvparams"].update(hvp)
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idict["beparams"] = cluster.FillBE(instance)
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if bep is not None: |
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idict["beparams"].update(bep)
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for nic in idict["nics"]: |
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nic['nicparams'] = objects.FillDict(
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cluster.nicparams[constants.PP_DEFAULT], |
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nic['nicparams'])
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return idict
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def _ConnectList(self, client, node_list, call): |
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"""Helper for computing node addresses.
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@type client: L{ganeti.rpc.Client}
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@param client: a C{Client} instance
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@type node_list: list
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@param node_list: the node list we should connect
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@type call: string
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@param call: the name of the remote procedure call, for filling in
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correctly any eventual offline nodes' results
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"""
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all_nodes = self._cfg.GetAllNodesInfo()
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name_list = [] |
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addr_list = [] |
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skip_dict = {} |
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for node in node_list: |
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if node in all_nodes: |
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if all_nodes[node].offline:
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skip_dict[node] = RpcResult(node=node, offline=True, call=call)
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continue
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val = all_nodes[node].primary_ip |
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else:
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val = None
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addr_list.append(val) |
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name_list.append(node) |
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if name_list:
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client.ConnectList(name_list, address_list=addr_list) |
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return skip_dict
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def _ConnectNode(self, client, node, call): |
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"""Helper for computing one node's address.
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@type client: L{ganeti.rpc.Client}
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@param client: a C{Client} instance
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@type node: str
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@param node: the node we should connect
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@type call: string
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@param call: the name of the remote procedure call, for filling in
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correctly any eventual offline nodes' results
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"""
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node_info = self._cfg.GetNodeInfo(node)
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if node_info is not None: |
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if node_info.offline:
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return RpcResult(node=node, offline=True, call=call) |
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addr = node_info.primary_ip |
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else:
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addr = None
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client.ConnectNode(node, address=addr) |
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def _MultiNodeCall(self, node_list, procedure, args): |
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"""Helper for making a multi-node call
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"""
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body = serializer.DumpJson(args, indent=False)
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c = Client(procedure, body, self.port)
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skip_dict = self._ConnectList(c, node_list, procedure)
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skip_dict.update(c.GetResults()) |
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return skip_dict
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@classmethod
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def _StaticMultiNodeCall(cls, node_list, procedure, args, |
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address_list=None):
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"""Helper for making a multi-node static call
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"""
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body = serializer.DumpJson(args, indent=False)
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c = Client(procedure, body, utils.GetNodeDaemonPort()) |
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c.ConnectList(node_list, address_list=address_list) |
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return c.GetResults()
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def _SingleNodeCall(self, node, procedure, args): |
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"""Helper for making a single-node call
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"""
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body = serializer.DumpJson(args, indent=False)
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c = Client(procedure, body, self.port)
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result = self._ConnectNode(c, node, procedure)
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if result is None: |
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# we did connect, node is not offline
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result = c.GetResults()[node] |
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return result
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@classmethod
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def _StaticSingleNodeCall(cls, node, procedure, args): |
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"""Helper for making a single-node static call
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"""
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body = serializer.DumpJson(args, indent=False)
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c = Client(procedure, body, utils.GetNodeDaemonPort()) |
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c.ConnectNode(node) |
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return c.GetResults()[node]
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@staticmethod
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def _Compress(data): |
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"""Compresses a string for transport over RPC.
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Small amounts of data are not compressed.
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@type data: str
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@param data: Data
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@rtype: tuple
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@return: Encoded data to send
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"""
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# Small amounts of data are not compressed
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if len(data) < 512: |
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return (constants.RPC_ENCODING_NONE, data)
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# Compress with zlib and encode in base64
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return (constants.RPC_ENCODING_ZLIB_BASE64,
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base64.b64encode(zlib.compress(data, 3)))
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#
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# Begin RPC calls
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#
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def call_lv_list(self, node_list, vg_name): |
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"""Gets the logical volumes present in a given volume group.
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This is a multi-node call.
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"""
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return self._MultiNodeCall(node_list, "lv_list", [vg_name]) |
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def call_vg_list(self, node_list): |
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"""Gets the volume group list.
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This is a multi-node call.
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"""
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return self._MultiNodeCall(node_list, "vg_list", []) |
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def call_bridges_exist(self, node, bridges_list): |
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"""Checks if a node has all the bridges given.
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This method checks if all bridges given in the bridges_list are
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present on the remote node, so that an instance that uses interfaces
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on those bridges can be started.
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This is a single-node call.
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"""
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return self._SingleNodeCall(node, "bridges_exist", [bridges_list]) |
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def call_instance_start(self, node, instance, hvp, bep): |
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"""Starts an instance.
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This is a single-node call.
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"""
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idict = self._InstDict(instance, hvp=hvp, bep=bep)
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return self._SingleNodeCall(node, "instance_start", [idict]) |
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def call_instance_shutdown(self, node, instance): |
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"""Stops an instance.
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This is a single-node call.
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"""
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return self._SingleNodeCall(node, "instance_shutdown", |
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[self._InstDict(instance)])
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def call_migration_info(self, node, instance): |
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"""Gather the information necessary to prepare an instance migration.
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This is a single-node call.
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@type node: string
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@param node: the node on which the instance is currently running
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@type instance: C{objects.Instance}
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@param instance: the instance definition
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"""
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return self._SingleNodeCall(node, "migration_info", |
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[self._InstDict(instance)])
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def call_accept_instance(self, node, instance, info, target): |
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"""Prepare a node to accept an instance.
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This is a single-node call.
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@type node: string
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@param node: the target node for the migration
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@type instance: C{objects.Instance}
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@param instance: the instance definition
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@type info: opaque/hypervisor specific (string/data)
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@param info: result for the call_migration_info call
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@type target: string
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@param target: target hostname (usually ip address) (on the node itself)
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"""
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return self._SingleNodeCall(node, "accept_instance", |
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[self._InstDict(instance), info, target])
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def call_finalize_migration(self, node, instance, info, success): |
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"""Finalize any target-node migration specific operation.
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This is called both in case of a successful migration and in case of error
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(in which case it should abort the migration).
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This is a single-node call.
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@type node: string
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@param node: the target node for the migration
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@type instance: C{objects.Instance}
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@param instance: the instance definition
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@type info: opaque/hypervisor specific (string/data)
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@param info: result for the call_migration_info call
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@type success: boolean
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@param success: whether the migration was a success or a failure
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"""
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return self._SingleNodeCall(node, "finalize_migration", |
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[self._InstDict(instance), info, success])
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def call_instance_migrate(self, node, instance, target, live): |
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"""Migrate an instance.
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This is a single-node call.
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@type node: string
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@param node: the node on which the instance is currently running
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@type instance: C{objects.Instance}
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@param instance: the instance definition
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@type target: string
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@param target: the target node name
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@type live: boolean
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@param live: whether the migration should be done live or not (the
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interpretation of this parameter is left to the hypervisor)
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"""
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return self._SingleNodeCall(node, "instance_migrate", |
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[self._InstDict(instance), target, live])
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|
537 |
def call_instance_reboot(self, node, instance, reboot_type): |
538 |
"""Reboots an instance.
|
539 |
|
540 |
This is a single-node call.
|
541 |
|
542 |
"""
|
543 |
return self._SingleNodeCall(node, "instance_reboot", |
544 |
[self._InstDict(instance), reboot_type])
|
545 |
|
546 |
def call_instance_os_add(self, node, inst, reinstall): |
547 |
"""Installs an OS on the given instance.
|
548 |
|
549 |
This is a single-node call.
|
550 |
|
551 |
"""
|
552 |
return self._SingleNodeCall(node, "instance_os_add", |
553 |
[self._InstDict(inst), reinstall])
|
554 |
|
555 |
def call_instance_run_rename(self, node, inst, old_name): |
556 |
"""Run the OS rename script for an instance.
|
557 |
|
558 |
This is a single-node call.
|
559 |
|
560 |
"""
|
561 |
return self._SingleNodeCall(node, "instance_run_rename", |
562 |
[self._InstDict(inst), old_name])
|
563 |
|
564 |
def call_instance_info(self, node, instance, hname): |
565 |
"""Returns information about a single instance.
|
566 |
|
567 |
This is a single-node call.
|
568 |
|
569 |
@type node: list
|
570 |
@param node: the list of nodes to query
|
571 |
@type instance: string
|
572 |
@param instance: the instance name
|
573 |
@type hname: string
|
574 |
@param hname: the hypervisor type of the instance
|
575 |
|
576 |
"""
|
577 |
return self._SingleNodeCall(node, "instance_info", [instance, hname]) |
578 |
|
579 |
def call_instance_migratable(self, node, instance): |
580 |
"""Checks whether the given instance can be migrated.
|
581 |
|
582 |
This is a single-node call.
|
583 |
|
584 |
@param node: the node to query
|
585 |
@type instance: L{objects.Instance}
|
586 |
@param instance: the instance to check
|
587 |
|
588 |
|
589 |
"""
|
590 |
return self._SingleNodeCall(node, "instance_migratable", |
591 |
[self._InstDict(instance)])
|
592 |
|
593 |
def call_all_instances_info(self, node_list, hypervisor_list): |
594 |
"""Returns information about all instances on the given nodes.
|
595 |
|
596 |
This is a multi-node call.
|
597 |
|
598 |
@type node_list: list
|
599 |
@param node_list: the list of nodes to query
|
600 |
@type hypervisor_list: list
|
601 |
@param hypervisor_list: the hypervisors to query for instances
|
602 |
|
603 |
"""
|
604 |
return self._MultiNodeCall(node_list, "all_instances_info", |
605 |
[hypervisor_list]) |
606 |
|
607 |
def call_instance_list(self, node_list, hypervisor_list): |
608 |
"""Returns the list of running instances on a given node.
|
609 |
|
610 |
This is a multi-node call.
|
611 |
|
612 |
@type node_list: list
|
613 |
@param node_list: the list of nodes to query
|
614 |
@type hypervisor_list: list
|
615 |
@param hypervisor_list: the hypervisors to query for instances
|
616 |
|
617 |
"""
|
618 |
return self._MultiNodeCall(node_list, "instance_list", [hypervisor_list]) |
619 |
|
620 |
def call_node_tcp_ping(self, node, source, target, port, timeout, |
621 |
live_port_needed): |
622 |
"""Do a TcpPing on the remote node
|
623 |
|
624 |
This is a single-node call.
|
625 |
|
626 |
"""
|
627 |
return self._SingleNodeCall(node, "node_tcp_ping", |
628 |
[source, target, port, timeout, |
629 |
live_port_needed]) |
630 |
|
631 |
def call_node_has_ip_address(self, node, address): |
632 |
"""Checks if a node has the given IP address.
|
633 |
|
634 |
This is a single-node call.
|
635 |
|
636 |
"""
|
637 |
return self._SingleNodeCall(node, "node_has_ip_address", [address]) |
638 |
|
639 |
def call_node_info(self, node_list, vg_name, hypervisor_type): |
640 |
"""Return node information.
|
641 |
|
642 |
This will return memory information and volume group size and free
|
643 |
space.
|
644 |
|
645 |
This is a multi-node call.
|
646 |
|
647 |
@type node_list: list
|
648 |
@param node_list: the list of nodes to query
|
649 |
@type vg_name: C{string}
|
650 |
@param vg_name: the name of the volume group to ask for disk space
|
651 |
information
|
652 |
@type hypervisor_type: C{str}
|
653 |
@param hypervisor_type: the name of the hypervisor to ask for
|
654 |
memory information
|
655 |
|
656 |
"""
|
657 |
return self._MultiNodeCall(node_list, "node_info", |
658 |
[vg_name, hypervisor_type]) |
659 |
|
660 |
def call_node_add(self, node, dsa, dsapub, rsa, rsapub, ssh, sshpub): |
661 |
"""Add a node to the cluster.
|
662 |
|
663 |
This is a single-node call.
|
664 |
|
665 |
"""
|
666 |
return self._SingleNodeCall(node, "node_add", |
667 |
[dsa, dsapub, rsa, rsapub, ssh, sshpub]) |
668 |
|
669 |
def call_node_verify(self, node_list, checkdict, cluster_name): |
670 |
"""Request verification of given parameters.
|
671 |
|
672 |
This is a multi-node call.
|
673 |
|
674 |
"""
|
675 |
return self._MultiNodeCall(node_list, "node_verify", |
676 |
[checkdict, cluster_name]) |
677 |
|
678 |
@classmethod
|
679 |
def call_node_start_master(cls, node, start_daemons, no_voting): |
680 |
"""Tells a node to activate itself as a master.
|
681 |
|
682 |
This is a single-node call.
|
683 |
|
684 |
"""
|
685 |
return cls._StaticSingleNodeCall(node, "node_start_master", |
686 |
[start_daemons, no_voting]) |
687 |
|
688 |
@classmethod
|
689 |
def call_node_stop_master(cls, node, stop_daemons): |
690 |
"""Tells a node to demote itself from master status.
|
691 |
|
692 |
This is a single-node call.
|
693 |
|
694 |
"""
|
695 |
return cls._StaticSingleNodeCall(node, "node_stop_master", [stop_daemons]) |
696 |
|
697 |
@classmethod
|
698 |
def call_master_info(cls, node_list): |
699 |
"""Query master info.
|
700 |
|
701 |
This is a multi-node call.
|
702 |
|
703 |
"""
|
704 |
# TODO: should this method query down nodes?
|
705 |
return cls._StaticMultiNodeCall(node_list, "master_info", []) |
706 |
|
707 |
def call_version(self, node_list): |
708 |
"""Query node version.
|
709 |
|
710 |
This is a multi-node call.
|
711 |
|
712 |
"""
|
713 |
return self._MultiNodeCall(node_list, "version", []) |
714 |
|
715 |
def call_blockdev_create(self, node, bdev, size, owner, on_primary, info): |
716 |
"""Request creation of a given block device.
|
717 |
|
718 |
This is a single-node call.
|
719 |
|
720 |
"""
|
721 |
return self._SingleNodeCall(node, "blockdev_create", |
722 |
[bdev.ToDict(), size, owner, on_primary, info]) |
723 |
|
724 |
def call_blockdev_remove(self, node, bdev): |
725 |
"""Request removal of a given block device.
|
726 |
|
727 |
This is a single-node call.
|
728 |
|
729 |
"""
|
730 |
return self._SingleNodeCall(node, "blockdev_remove", [bdev.ToDict()]) |
731 |
|
732 |
def call_blockdev_rename(self, node, devlist): |
733 |
"""Request rename of the given block devices.
|
734 |
|
735 |
This is a single-node call.
|
736 |
|
737 |
"""
|
738 |
return self._SingleNodeCall(node, "blockdev_rename", |
739 |
[(d.ToDict(), uid) for d, uid in devlist]) |
740 |
|
741 |
def call_blockdev_assemble(self, node, disk, owner, on_primary): |
742 |
"""Request assembling of a given block device.
|
743 |
|
744 |
This is a single-node call.
|
745 |
|
746 |
"""
|
747 |
return self._SingleNodeCall(node, "blockdev_assemble", |
748 |
[disk.ToDict(), owner, on_primary]) |
749 |
|
750 |
def call_blockdev_shutdown(self, node, disk): |
751 |
"""Request shutdown of a given block device.
|
752 |
|
753 |
This is a single-node call.
|
754 |
|
755 |
"""
|
756 |
return self._SingleNodeCall(node, "blockdev_shutdown", [disk.ToDict()]) |
757 |
|
758 |
def call_blockdev_addchildren(self, node, bdev, ndevs): |
759 |
"""Request adding a list of children to a (mirroring) device.
|
760 |
|
761 |
This is a single-node call.
|
762 |
|
763 |
"""
|
764 |
return self._SingleNodeCall(node, "blockdev_addchildren", |
765 |
[bdev.ToDict(), |
766 |
[disk.ToDict() for disk in ndevs]]) |
767 |
|
768 |
def call_blockdev_removechildren(self, node, bdev, ndevs): |
769 |
"""Request removing a list of children from a (mirroring) device.
|
770 |
|
771 |
This is a single-node call.
|
772 |
|
773 |
"""
|
774 |
return self._SingleNodeCall(node, "blockdev_removechildren", |
775 |
[bdev.ToDict(), |
776 |
[disk.ToDict() for disk in ndevs]]) |
777 |
|
778 |
def call_blockdev_getmirrorstatus(self, node, disks): |
779 |
"""Request status of a (mirroring) device.
|
780 |
|
781 |
This is a single-node call.
|
782 |
|
783 |
"""
|
784 |
return self._SingleNodeCall(node, "blockdev_getmirrorstatus", |
785 |
[dsk.ToDict() for dsk in disks]) |
786 |
|
787 |
def call_blockdev_find(self, node, disk): |
788 |
"""Request identification of a given block device.
|
789 |
|
790 |
This is a single-node call.
|
791 |
|
792 |
"""
|
793 |
return self._SingleNodeCall(node, "blockdev_find", [disk.ToDict()]) |
794 |
|
795 |
def call_blockdev_close(self, node, instance_name, disks): |
796 |
"""Closes the given block devices.
|
797 |
|
798 |
This is a single-node call.
|
799 |
|
800 |
"""
|
801 |
params = [instance_name, [cf.ToDict() for cf in disks]] |
802 |
return self._SingleNodeCall(node, "blockdev_close", params) |
803 |
|
804 |
def call_drbd_disconnect_net(self, node_list, nodes_ip, disks): |
805 |
"""Disconnects the network of the given drbd devices.
|
806 |
|
807 |
This is a multi-node call.
|
808 |
|
809 |
"""
|
810 |
return self._MultiNodeCall(node_list, "drbd_disconnect_net", |
811 |
[nodes_ip, [cf.ToDict() for cf in disks]]) |
812 |
|
813 |
def call_drbd_attach_net(self, node_list, nodes_ip, |
814 |
disks, instance_name, multimaster): |
815 |
"""Disconnects the given drbd devices.
|
816 |
|
817 |
This is a multi-node call.
|
818 |
|
819 |
"""
|
820 |
return self._MultiNodeCall(node_list, "drbd_attach_net", |
821 |
[nodes_ip, [cf.ToDict() for cf in disks], |
822 |
instance_name, multimaster]) |
823 |
|
824 |
def call_drbd_wait_sync(self, node_list, nodes_ip, disks): |
825 |
"""Waits for the synchronization of drbd devices is complete.
|
826 |
|
827 |
This is a multi-node call.
|
828 |
|
829 |
"""
|
830 |
return self._MultiNodeCall(node_list, "drbd_wait_sync", |
831 |
[nodes_ip, [cf.ToDict() for cf in disks]]) |
832 |
|
833 |
@classmethod
|
834 |
def call_upload_file(cls, node_list, file_name, address_list=None): |
835 |
"""Upload a file.
|
836 |
|
837 |
The node will refuse the operation in case the file is not on the
|
838 |
approved file list.
|
839 |
|
840 |
This is a multi-node call.
|
841 |
|
842 |
@type node_list: list
|
843 |
@param node_list: the list of node names to upload to
|
844 |
@type file_name: str
|
845 |
@param file_name: the filename to upload
|
846 |
@type address_list: list or None
|
847 |
@keyword address_list: an optional list of node addresses, in order
|
848 |
to optimize the RPC speed
|
849 |
|
850 |
"""
|
851 |
file_contents = utils.ReadFile(file_name) |
852 |
data = cls._Compress(file_contents) |
853 |
st = os.stat(file_name) |
854 |
params = [file_name, data, st.st_mode, st.st_uid, st.st_gid, |
855 |
st.st_atime, st.st_mtime] |
856 |
return cls._StaticMultiNodeCall(node_list, "upload_file", params, |
857 |
address_list=address_list) |
858 |
|
859 |
@classmethod
|
860 |
def call_write_ssconf_files(cls, node_list, values): |
861 |
"""Write ssconf files.
|
862 |
|
863 |
This is a multi-node call.
|
864 |
|
865 |
"""
|
866 |
return cls._StaticMultiNodeCall(node_list, "write_ssconf_files", [values]) |
867 |
|
868 |
def call_os_diagnose(self, node_list): |
869 |
"""Request a diagnose of OS definitions.
|
870 |
|
871 |
This is a multi-node call.
|
872 |
|
873 |
"""
|
874 |
return self._MultiNodeCall(node_list, "os_diagnose", []) |
875 |
|
876 |
def call_os_get(self, node, name): |
877 |
"""Returns an OS definition.
|
878 |
|
879 |
This is a single-node call.
|
880 |
|
881 |
"""
|
882 |
result = self._SingleNodeCall(node, "os_get", [name]) |
883 |
if not result.failed and isinstance(result.data, dict): |
884 |
result.data = objects.OS.FromDict(result.data) |
885 |
return result
|
886 |
|
887 |
def call_hooks_runner(self, node_list, hpath, phase, env): |
888 |
"""Call the hooks runner.
|
889 |
|
890 |
Args:
|
891 |
- op: the OpCode instance
|
892 |
- env: a dictionary with the environment
|
893 |
|
894 |
This is a multi-node call.
|
895 |
|
896 |
"""
|
897 |
params = [hpath, phase, env] |
898 |
return self._MultiNodeCall(node_list, "hooks_runner", params) |
899 |
|
900 |
def call_iallocator_runner(self, node, name, idata): |
901 |
"""Call an iallocator on a remote node
|
902 |
|
903 |
Args:
|
904 |
- name: the iallocator name
|
905 |
- input: the json-encoded input string
|
906 |
|
907 |
This is a single-node call.
|
908 |
|
909 |
"""
|
910 |
return self._SingleNodeCall(node, "iallocator_runner", [name, idata]) |
911 |
|
912 |
def call_blockdev_grow(self, node, cf_bdev, amount): |
913 |
"""Request a snapshot of the given block device.
|
914 |
|
915 |
This is a single-node call.
|
916 |
|
917 |
"""
|
918 |
return self._SingleNodeCall(node, "blockdev_grow", |
919 |
[cf_bdev.ToDict(), amount]) |
920 |
|
921 |
def call_blockdev_snapshot(self, node, cf_bdev): |
922 |
"""Request a snapshot of the given block device.
|
923 |
|
924 |
This is a single-node call.
|
925 |
|
926 |
"""
|
927 |
return self._SingleNodeCall(node, "blockdev_snapshot", [cf_bdev.ToDict()]) |
928 |
|
929 |
def call_snapshot_export(self, node, snap_bdev, dest_node, instance, |
930 |
cluster_name, idx): |
931 |
"""Request the export of a given snapshot.
|
932 |
|
933 |
This is a single-node call.
|
934 |
|
935 |
"""
|
936 |
return self._SingleNodeCall(node, "snapshot_export", |
937 |
[snap_bdev.ToDict(), dest_node, |
938 |
self._InstDict(instance), cluster_name, idx])
|
939 |
|
940 |
def call_finalize_export(self, node, instance, snap_disks): |
941 |
"""Request the completion of an export operation.
|
942 |
|
943 |
This writes the export config file, etc.
|
944 |
|
945 |
This is a single-node call.
|
946 |
|
947 |
"""
|
948 |
flat_disks = [] |
949 |
for disk in snap_disks: |
950 |
if isinstance(disk, bool): |
951 |
flat_disks.append(disk) |
952 |
else:
|
953 |
flat_disks.append(disk.ToDict()) |
954 |
|
955 |
return self._SingleNodeCall(node, "finalize_export", |
956 |
[self._InstDict(instance), flat_disks])
|
957 |
|
958 |
def call_export_info(self, node, path): |
959 |
"""Queries the export information in a given path.
|
960 |
|
961 |
This is a single-node call.
|
962 |
|
963 |
"""
|
964 |
return self._SingleNodeCall(node, "export_info", [path]) |
965 |
|
966 |
def call_instance_os_import(self, node, inst, src_node, src_images, |
967 |
cluster_name): |
968 |
"""Request the import of a backup into an instance.
|
969 |
|
970 |
This is a single-node call.
|
971 |
|
972 |
"""
|
973 |
return self._SingleNodeCall(node, "instance_os_import", |
974 |
[self._InstDict(inst), src_node, src_images,
|
975 |
cluster_name]) |
976 |
|
977 |
def call_export_list(self, node_list): |
978 |
"""Gets the stored exports list.
|
979 |
|
980 |
This is a multi-node call.
|
981 |
|
982 |
"""
|
983 |
return self._MultiNodeCall(node_list, "export_list", []) |
984 |
|
985 |
def call_export_remove(self, node, export): |
986 |
"""Requests removal of a given export.
|
987 |
|
988 |
This is a single-node call.
|
989 |
|
990 |
"""
|
991 |
return self._SingleNodeCall(node, "export_remove", [export]) |
992 |
|
993 |
@classmethod
|
994 |
def call_node_leave_cluster(cls, node): |
995 |
"""Requests a node to clean the cluster information it has.
|
996 |
|
997 |
This will remove the configuration information from the ganeti data
|
998 |
dir.
|
999 |
|
1000 |
This is a single-node call.
|
1001 |
|
1002 |
"""
|
1003 |
return cls._StaticSingleNodeCall(node, "node_leave_cluster", []) |
1004 |
|
1005 |
def call_node_volumes(self, node_list): |
1006 |
"""Gets all volumes on node(s).
|
1007 |
|
1008 |
This is a multi-node call.
|
1009 |
|
1010 |
"""
|
1011 |
return self._MultiNodeCall(node_list, "node_volumes", []) |
1012 |
|
1013 |
def call_node_demote_from_mc(self, node): |
1014 |
"""Demote a node from the master candidate role.
|
1015 |
|
1016 |
This is a single-node call.
|
1017 |
|
1018 |
"""
|
1019 |
return self._SingleNodeCall(node, "node_demote_from_mc", []) |
1020 |
|
1021 |
|
1022 |
def call_node_powercycle(self, node, hypervisor): |
1023 |
"""Tries to powercycle a node.
|
1024 |
|
1025 |
This is a single-node call.
|
1026 |
|
1027 |
"""
|
1028 |
return self._SingleNodeCall(node, "node_powercycle", [hypervisor]) |
1029 |
|
1030 |
|
1031 |
def call_test_delay(self, node_list, duration): |
1032 |
"""Sleep for a fixed time on given node(s).
|
1033 |
|
1034 |
This is a multi-node call.
|
1035 |
|
1036 |
"""
|
1037 |
return self._MultiNodeCall(node_list, "test_delay", [duration]) |
1038 |
|
1039 |
def call_file_storage_dir_create(self, node, file_storage_dir): |
1040 |
"""Create the given file storage directory.
|
1041 |
|
1042 |
This is a single-node call.
|
1043 |
|
1044 |
"""
|
1045 |
return self._SingleNodeCall(node, "file_storage_dir_create", |
1046 |
[file_storage_dir]) |
1047 |
|
1048 |
def call_file_storage_dir_remove(self, node, file_storage_dir): |
1049 |
"""Remove the given file storage directory.
|
1050 |
|
1051 |
This is a single-node call.
|
1052 |
|
1053 |
"""
|
1054 |
return self._SingleNodeCall(node, "file_storage_dir_remove", |
1055 |
[file_storage_dir]) |
1056 |
|
1057 |
def call_file_storage_dir_rename(self, node, old_file_storage_dir, |
1058 |
new_file_storage_dir): |
1059 |
"""Rename file storage directory.
|
1060 |
|
1061 |
This is a single-node call.
|
1062 |
|
1063 |
"""
|
1064 |
return self._SingleNodeCall(node, "file_storage_dir_rename", |
1065 |
[old_file_storage_dir, new_file_storage_dir]) |
1066 |
|
1067 |
@classmethod
|
1068 |
def call_jobqueue_update(cls, node_list, address_list, file_name, content): |
1069 |
"""Update job queue.
|
1070 |
|
1071 |
This is a multi-node call.
|
1072 |
|
1073 |
"""
|
1074 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_update", |
1075 |
[file_name, cls._Compress(content)], |
1076 |
address_list=address_list) |
1077 |
|
1078 |
@classmethod
|
1079 |
def call_jobqueue_purge(cls, node): |
1080 |
"""Purge job queue.
|
1081 |
|
1082 |
This is a single-node call.
|
1083 |
|
1084 |
"""
|
1085 |
return cls._StaticSingleNodeCall(node, "jobqueue_purge", []) |
1086 |
|
1087 |
@classmethod
|
1088 |
def call_jobqueue_rename(cls, node_list, address_list, rename): |
1089 |
"""Rename a job queue file.
|
1090 |
|
1091 |
This is a multi-node call.
|
1092 |
|
1093 |
"""
|
1094 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_rename", rename, |
1095 |
address_list=address_list) |
1096 |
|
1097 |
@classmethod
|
1098 |
def call_jobqueue_set_drain(cls, node_list, drain_flag): |
1099 |
"""Set the drain flag on the queue.
|
1100 |
|
1101 |
This is a multi-node call.
|
1102 |
|
1103 |
@type node_list: list
|
1104 |
@param node_list: the list of nodes to query
|
1105 |
@type drain_flag: bool
|
1106 |
@param drain_flag: if True, will set the drain flag, otherwise reset it.
|
1107 |
|
1108 |
"""
|
1109 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_set_drain", |
1110 |
[drain_flag]) |
1111 |
|
1112 |
def call_hypervisor_validate_params(self, node_list, hvname, hvparams): |
1113 |
"""Validate the hypervisor params.
|
1114 |
|
1115 |
This is a multi-node call.
|
1116 |
|
1117 |
@type node_list: list
|
1118 |
@param node_list: the list of nodes to query
|
1119 |
@type hvname: string
|
1120 |
@param hvname: the hypervisor name
|
1121 |
@type hvparams: dict
|
1122 |
@param hvparams: the hypervisor parameters to be validated
|
1123 |
|
1124 |
"""
|
1125 |
cluster = self._cfg.GetClusterInfo()
|
1126 |
hv_full = objects.FillDict(cluster.hvparams.get(hvname, {}), hvparams) |
1127 |
return self._MultiNodeCall(node_list, "hypervisor_validate_params", |
1128 |
[hvname, hv_full]) |