root / lib / rpc.py @ 0436da49
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#
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# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 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=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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import pycurl |
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import threading |
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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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from ganeti import netutils |
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from ganeti import ssconf |
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from ganeti import runtime |
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from ganeti import compat |
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# Special module generated at build time
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from ganeti import _generated_rpc |
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# pylint has a bug here, doesn't see this import
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import ganeti.http.client # pylint: disable=W0611 |
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# Timeout for connecting to nodes (seconds)
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_RPC_CONNECT_TIMEOUT = 5
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_RPC_CLIENT_HEADERS = [ |
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"Content-type: %s" % http.HTTP_APP_JSON,
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"Expect:",
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] |
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# Various time constants for the timeout table
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_TMO_URGENT = 60 # one minute |
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_TMO_FAST = 5 * 60 # five minutes |
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_TMO_NORMAL = 15 * 60 # 15 minutes |
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_TMO_SLOW = 3600 # one hour |
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_TMO_4HRS = 4 * 3600 |
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_TMO_1DAY = 86400
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# Timeout table that will be built later by decorators
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# Guidelines for choosing timeouts:
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# - call used during watcher: timeout -> 1min, _TMO_URGENT
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# - trivial (but be sure it is trivial) (e.g. reading a file): 5min, _TMO_FAST
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# - other calls: 15 min, _TMO_NORMAL
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# - special calls (instance add, etc.): either _TMO_SLOW (1h) or huge timeouts
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_TIMEOUTS = { |
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} |
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#: Special value to describe an offline host
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_OFFLINE = object()
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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 and while exactly one thread is
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running.
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"""
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# curl_global_init(3) and curl_global_cleanup(3) must be called with only
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# one thread running. This check is just a safety measure -- it doesn't
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# cover all cases.
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assert threading.activeCount() == 1, \ |
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"Found more than one active thread when initializing pycURL"
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logging.info("Using PycURL %s", pycurl.version)
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pycurl.global_init(pycurl.GLOBAL_ALL) |
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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 and while exactly one thread is
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running.
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"""
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pycurl.global_cleanup() |
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def _ConfigRpcCurl(curl): |
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noded_cert = str(constants.NODED_CERT_FILE)
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curl.setopt(pycurl.FOLLOWLOCATION, False)
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curl.setopt(pycurl.CAINFO, noded_cert) |
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curl.setopt(pycurl.SSL_VERIFYHOST, 0)
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curl.setopt(pycurl.SSL_VERIFYPEER, True)
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curl.setopt(pycurl.SSLCERTTYPE, "PEM")
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curl.setopt(pycurl.SSLCERT, noded_cert) |
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curl.setopt(pycurl.SSLKEYTYPE, "PEM")
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curl.setopt(pycurl.SSLKEY, noded_cert) |
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curl.setopt(pycurl.CONNECTTIMEOUT, _RPC_CONNECT_TIMEOUT) |
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def _RpcTimeout(secs): |
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"""Timeout decorator.
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When applied to a rpc call_* function, it updates the global timeout
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table with the given function/timeout.
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"""
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def decorator(f): |
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name = f.__name__ |
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assert name.startswith("call_") |
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_TIMEOUTS[name[len("call_"):]] = secs |
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return f
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return decorator
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def RunWithRPC(fn): |
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"""RPC-wrapper decorator.
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When applied to a function, it runs it with the RPC system
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initialized, and it shutsdown the system afterwards. This means the
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function must be called without RPC being initialized.
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"""
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def wrapper(*args, **kwargs): |
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Init() |
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try:
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return fn(*args, **kwargs)
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finally:
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Shutdown() |
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return wrapper
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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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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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@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.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.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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self.payload = None |
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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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self.payload = None |
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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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self.payload = None |
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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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for attr_name in ["call", "data", "fail_msg", |
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"node", "offline", "payload"]: |
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assert hasattr(self, attr_name), "Missing attribute %s" % attr_name |
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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, ecode=None): |
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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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if ecode is not None: |
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args = (msg, ecode) |
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else:
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args = (msg, ) |
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raise ec(*args) # pylint: disable=W0142 |
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def _SsconfResolver(node_list, |
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ssc=ssconf.SimpleStore, |
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nslookup_fn=netutils.Hostname.GetIP): |
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"""Return addresses for given node names.
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@type node_list: list
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@param node_list: List of node names
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@type ssc: class
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@param ssc: SimpleStore class that is used to obtain node->ip mappings
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@type nslookup_fn: callable
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@param nslookup_fn: function use to do NS lookup
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@rtype: list of tuple; (string, string)
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@return: List of tuples containing node name and IP address
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"""
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ss = ssc() |
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iplist = ss.GetNodePrimaryIPList() |
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family = ss.GetPrimaryIPFamily() |
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ipmap = dict(entry.split() for entry in iplist) |
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result = [] |
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for node in node_list: |
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ip = ipmap.get(node) |
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if ip is None: |
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ip = nslookup_fn(node, family=family) |
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result.append((node, ip)) |
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return result
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class _StaticResolver: |
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def __init__(self, addresses): |
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"""Initializes this class.
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"""
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self._addresses = addresses
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def __call__(self, hosts): |
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"""Returns static addresses for hosts.
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"""
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assert len(hosts) == len(self._addresses) |
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return zip(hosts, self._addresses) |
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def _CheckConfigNode(name, node): |
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"""Checks if a node is online.
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@type name: string
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@param name: Node name
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@type node: L{objects.Node} or None
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@param node: Node object
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"""
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if node is None: |
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# Depend on DNS for name resolution
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ip = name |
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elif node.offline:
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ip = _OFFLINE |
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else:
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ip = node.primary_ip |
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return (name, ip)
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def _NodeConfigResolver(single_node_fn, all_nodes_fn, hosts): |
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"""Calculate node addresses using configuration.
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"""
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# Special case for single-host lookups
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if len(hosts) == 1: |
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(name, ) = hosts |
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return [_CheckConfigNode(name, single_node_fn(name))]
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else:
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all_nodes = all_nodes_fn() |
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return [_CheckConfigNode(name, all_nodes.get(name, None)) |
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for name in hosts] |
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class _RpcProcessor: |
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def __init__(self, resolver, port, lock_monitor_cb=None): |
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"""Initializes this class.
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@param resolver: callable accepting a list of hostnames, returning a list
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of tuples containing name and IP address (IP address can be the name or
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the special value L{_OFFLINE} to mark offline machines)
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@type port: int
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@param port: TCP port
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@param lock_monitor_cb: Callable for registering with lock monitor
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"""
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self._resolver = resolver
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self._port = port
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self._lock_monitor_cb = lock_monitor_cb
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@staticmethod
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def _PrepareRequests(hosts, port, procedure, body, read_timeout): |
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"""Prepares requests by sorting offline hosts into separate list.
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"""
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results = {} |
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requests = {} |
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for (name, ip) in hosts: |
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if ip is _OFFLINE: |
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# Node is marked as offline
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results[name] = RpcResult(node=name, offline=True, call=procedure)
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else:
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requests[name] = \ |
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http.client.HttpClientRequest(str(ip), port,
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http.HTTP_PUT, str("/%s" % procedure), |
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headers=_RPC_CLIENT_HEADERS, |
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post_data=body, |
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read_timeout=read_timeout, |
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nicename="%s/%s" % (name, procedure),
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curl_config_fn=_ConfigRpcCurl) |
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return (results, requests)
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@staticmethod
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def _CombineResults(results, requests, procedure): |
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"""Combines pre-computed results for offline hosts with actual call results.
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"""
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for name, req in requests.items(): |
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if req.success and req.resp_status_code == http.HTTP_OK: |
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host_result = RpcResult(data=serializer.LoadJson(req.resp_body), |
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node=name, call=procedure) |
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else:
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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 on node %s: %s", procedure, name, msg)
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host_result = RpcResult(data=msg, failed=True, node=name,
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call=procedure) |
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results[name] = host_result |
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return results
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def __call__(self, hosts, procedure, body, read_timeout=None, |
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_req_process_fn=http.client.ProcessRequests): |
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"""Makes an RPC request to a number of nodes.
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@type hosts: sequence
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@param hosts: Hostnames
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@type procedure: string
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@param procedure: Request path
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@type body: string
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@param body: Request body
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@type read_timeout: int or None
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@param read_timeout: Read timeout for request
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"""
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if read_timeout is None: |
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read_timeout = _TIMEOUTS.get(procedure, None)
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assert read_timeout is not None, \ |
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"Missing RPC read timeout for procedure '%s'" % procedure
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(results, requests) = \ |
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self._PrepareRequests(self._resolver(hosts), self._port, procedure, |
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str(body), read_timeout)
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_req_process_fn(requests.values(), lock_monitor_cb=self._lock_monitor_cb)
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assert not frozenset(results).intersection(requests) |
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return self._CombineResults(results, requests, procedure) |
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def _EncodeImportExportIO(ieio, ieioargs): |
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"""Encodes import/export I/O information.
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"""
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if ieio == constants.IEIO_RAW_DISK:
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assert len(ieioargs) == 1 |
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return (ieioargs[0].ToDict(), ) |
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if ieio == constants.IEIO_SCRIPT:
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assert len(ieioargs) == 2 |
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return (ieioargs[0].ToDict(), ieioargs[1]) |
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return ieioargs
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class RpcRunner(_generated_rpc.RpcClientDefault): |
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"""RPC runner class.
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"""
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def __init__(self, context): |
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"""Initialized the RPC runner.
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@type context: C{masterd.GanetiContext}
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@param context: Ganeti context
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"""
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_generated_rpc.RpcClientDefault.__init__(self)
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self._cfg = context.cfg
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self._proc = _RpcProcessor(compat.partial(_NodeConfigResolver,
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self._cfg.GetNodeInfo,
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self._cfg.GetAllNodesInfo),
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netutils.GetDaemonPort(constants.NODED), |
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lock_monitor_cb=context.glm.AddToLockMonitor) |
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def _InstDict(self, instance, hvp=None, bep=None, osp=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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@type osp: dict or None
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@param osp: a dictionary with overridden os 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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idict["osparams"] = cluster.SimpleFillOS(instance.os, instance.osparams)
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if osp is not None: |
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idict["osparams"].update(osp)
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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 _MultiNodeCall(self, node_list, procedure, args, read_timeout=None): |
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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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return self._proc(node_list, procedure, body, read_timeout=read_timeout) |
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def _Call(self, node_list, procedure, timeout, args): |
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"""Entry point for automatically generated RPC wrappers.
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"""
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return self._MultiNodeCall(node_list, procedure, args, read_timeout=timeout) |
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@staticmethod
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def _StaticMultiNodeCall(node_list, procedure, args, |
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address_list=None, read_timeout=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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if address_list is None: |
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resolver = _SsconfResolver |
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else:
|
535 |
# Caller provided an address list
|
536 |
resolver = _StaticResolver(address_list) |
537 |
|
538 |
proc = _RpcProcessor(resolver, |
539 |
netutils.GetDaemonPort(constants.NODED)) |
540 |
return proc(node_list, procedure, body, read_timeout=read_timeout)
|
541 |
|
542 |
def _SingleNodeCall(self, node, procedure, args, read_timeout=None): |
543 |
"""Helper for making a single-node call
|
544 |
|
545 |
"""
|
546 |
body = serializer.DumpJson(args, indent=False)
|
547 |
return self._proc([node], procedure, body, read_timeout=read_timeout)[node] |
548 |
|
549 |
@classmethod
|
550 |
def _StaticSingleNodeCall(cls, node, procedure, args, read_timeout=None): |
551 |
"""Helper for making a single-node static call
|
552 |
|
553 |
"""
|
554 |
body = serializer.DumpJson(args, indent=False)
|
555 |
proc = _RpcProcessor(_SsconfResolver, |
556 |
netutils.GetDaemonPort(constants.NODED)) |
557 |
return proc([node], procedure, body, read_timeout=read_timeout)[node]
|
558 |
|
559 |
@staticmethod
|
560 |
def _BlockdevFindPostProc(result): |
561 |
if not result.fail_msg and result.payload is not None: |
562 |
result.payload = objects.BlockDevStatus.FromDict(result.payload) |
563 |
return result
|
564 |
|
565 |
@staticmethod
|
566 |
def _BlockdevGetMirrorStatusPostProc(result): |
567 |
if not result.fail_msg: |
568 |
result.payload = [objects.BlockDevStatus.FromDict(i) |
569 |
for i in result.payload] |
570 |
return result
|
571 |
|
572 |
@staticmethod
|
573 |
def _BlockdevGetMirrorStatusMultiPostProc(result): |
574 |
for nres in result.values(): |
575 |
if nres.fail_msg:
|
576 |
continue
|
577 |
|
578 |
for idx, (success, status) in enumerate(nres.payload): |
579 |
if success:
|
580 |
nres.payload[idx] = (success, objects.BlockDevStatus.FromDict(status)) |
581 |
|
582 |
return result
|
583 |
|
584 |
@staticmethod
|
585 |
def _OsGetPostProc(result): |
586 |
if not result.fail_msg and isinstance(result.payload, dict): |
587 |
result.payload = objects.OS.FromDict(result.payload) |
588 |
return result
|
589 |
|
590 |
@staticmethod
|
591 |
def _PrepareFinalizeExportDisks(snap_disks): |
592 |
flat_disks = [] |
593 |
|
594 |
for disk in snap_disks: |
595 |
if isinstance(disk, bool): |
596 |
flat_disks.append(disk) |
597 |
else:
|
598 |
flat_disks.append(disk.ToDict()) |
599 |
|
600 |
return flat_disks
|
601 |
|
602 |
@staticmethod
|
603 |
def _ImpExpStatusPostProc(result): |
604 |
"""Post-processor for import/export status.
|
605 |
|
606 |
@rtype: Payload containing list of L{objects.ImportExportStatus} instances
|
607 |
@return: Returns a list of the state of each named import/export or None if
|
608 |
a status couldn't be retrieved
|
609 |
|
610 |
"""
|
611 |
if not result.fail_msg: |
612 |
decoded = [] |
613 |
|
614 |
for i in result.payload: |
615 |
if i is None: |
616 |
decoded.append(None)
|
617 |
continue
|
618 |
decoded.append(objects.ImportExportStatus.FromDict(i)) |
619 |
|
620 |
result.payload = decoded |
621 |
|
622 |
return result
|
623 |
|
624 |
#
|
625 |
# Begin RPC calls
|
626 |
#
|
627 |
|
628 |
@_RpcTimeout(_TMO_URGENT)
|
629 |
def call_bdev_sizes(self, node_list, devices): |
630 |
"""Gets the sizes of requested block devices present on a node
|
631 |
|
632 |
This is a multi-node call.
|
633 |
|
634 |
"""
|
635 |
return self._MultiNodeCall(node_list, "bdev_sizes", [devices]) |
636 |
|
637 |
@_RpcTimeout(_TMO_NORMAL)
|
638 |
def call_storage_list(self, node_list, su_name, su_args, name, fields): |
639 |
"""Get list of storage units.
|
640 |
|
641 |
This is a multi-node call.
|
642 |
|
643 |
"""
|
644 |
return self._MultiNodeCall(node_list, "storage_list", |
645 |
[su_name, su_args, name, fields]) |
646 |
|
647 |
@_RpcTimeout(_TMO_NORMAL)
|
648 |
def call_storage_modify(self, node, su_name, su_args, name, changes): |
649 |
"""Modify a storage unit.
|
650 |
|
651 |
This is a single-node call.
|
652 |
|
653 |
"""
|
654 |
return self._SingleNodeCall(node, "storage_modify", |
655 |
[su_name, su_args, name, changes]) |
656 |
|
657 |
@_RpcTimeout(_TMO_NORMAL)
|
658 |
def call_storage_execute(self, node, su_name, su_args, name, op): |
659 |
"""Executes an operation on a storage unit.
|
660 |
|
661 |
This is a single-node call.
|
662 |
|
663 |
"""
|
664 |
return self._SingleNodeCall(node, "storage_execute", |
665 |
[su_name, su_args, name, op]) |
666 |
|
667 |
@_RpcTimeout(_TMO_NORMAL)
|
668 |
def call_instance_start(self, node, instance, hvp, bep, startup_paused): |
669 |
"""Starts an instance.
|
670 |
|
671 |
This is a single-node call.
|
672 |
|
673 |
"""
|
674 |
idict = self._InstDict(instance, hvp=hvp, bep=bep)
|
675 |
return self._SingleNodeCall(node, "instance_start", [idict, startup_paused]) |
676 |
|
677 |
@_RpcTimeout(_TMO_NORMAL)
|
678 |
def call_instance_shutdown(self, node, instance, timeout): |
679 |
"""Stops an instance.
|
680 |
|
681 |
This is a single-node call.
|
682 |
|
683 |
"""
|
684 |
return self._SingleNodeCall(node, "instance_shutdown", |
685 |
[self._InstDict(instance), timeout])
|
686 |
|
687 |
@_RpcTimeout(_TMO_NORMAL)
|
688 |
def call_migration_info(self, node, instance): |
689 |
"""Gather the information necessary to prepare an instance migration.
|
690 |
|
691 |
This is a single-node call.
|
692 |
|
693 |
@type node: string
|
694 |
@param node: the node on which the instance is currently running
|
695 |
@type instance: C{objects.Instance}
|
696 |
@param instance: the instance definition
|
697 |
|
698 |
"""
|
699 |
return self._SingleNodeCall(node, "migration_info", |
700 |
[self._InstDict(instance)])
|
701 |
|
702 |
@_RpcTimeout(_TMO_NORMAL)
|
703 |
def call_accept_instance(self, node, instance, info, target): |
704 |
"""Prepare a node to accept an instance.
|
705 |
|
706 |
This is a single-node call.
|
707 |
|
708 |
@type node: string
|
709 |
@param node: the target node for the migration
|
710 |
@type instance: C{objects.Instance}
|
711 |
@param instance: the instance definition
|
712 |
@type info: opaque/hypervisor specific (string/data)
|
713 |
@param info: result for the call_migration_info call
|
714 |
@type target: string
|
715 |
@param target: target hostname (usually ip address) (on the node itself)
|
716 |
|
717 |
"""
|
718 |
return self._SingleNodeCall(node, "accept_instance", |
719 |
[self._InstDict(instance), info, target])
|
720 |
|
721 |
@_RpcTimeout(_TMO_NORMAL)
|
722 |
def call_instance_finalize_migration_dst(self, node, instance, info, success): |
723 |
"""Finalize any target-node migration specific operation.
|
724 |
|
725 |
This is called both in case of a successful migration and in case of error
|
726 |
(in which case it should abort the migration).
|
727 |
|
728 |
This is a single-node call.
|
729 |
|
730 |
@type node: string
|
731 |
@param node: the target node for the migration
|
732 |
@type instance: C{objects.Instance}
|
733 |
@param instance: the instance definition
|
734 |
@type info: opaque/hypervisor specific (string/data)
|
735 |
@param info: result for the call_migration_info call
|
736 |
@type success: boolean
|
737 |
@param success: whether the migration was a success or a failure
|
738 |
|
739 |
"""
|
740 |
return self._SingleNodeCall(node, "instance_finalize_migration_dst", |
741 |
[self._InstDict(instance), info, success])
|
742 |
|
743 |
@_RpcTimeout(_TMO_SLOW)
|
744 |
def call_instance_migrate(self, node, instance, target, live): |
745 |
"""Migrate an instance.
|
746 |
|
747 |
This is a single-node call.
|
748 |
|
749 |
@type node: string
|
750 |
@param node: the node on which the instance is currently running
|
751 |
@type instance: C{objects.Instance}
|
752 |
@param instance: the instance definition
|
753 |
@type target: string
|
754 |
@param target: the target node name
|
755 |
@type live: boolean
|
756 |
@param live: whether the migration should be done live or not (the
|
757 |
interpretation of this parameter is left to the hypervisor)
|
758 |
|
759 |
"""
|
760 |
return self._SingleNodeCall(node, "instance_migrate", |
761 |
[self._InstDict(instance), target, live])
|
762 |
|
763 |
@_RpcTimeout(_TMO_SLOW)
|
764 |
def call_instance_finalize_migration_src(self, node, instance, success, live): |
765 |
"""Finalize the instance migration on the source node.
|
766 |
|
767 |
This is a single-node call.
|
768 |
|
769 |
@type instance: L{objects.Instance}
|
770 |
@param instance: the instance that was migrated
|
771 |
@type success: bool
|
772 |
@param success: whether the migration succeeded or not
|
773 |
@type live: bool
|
774 |
@param live: whether the user requested a live migration or not
|
775 |
|
776 |
"""
|
777 |
return self._SingleNodeCall(node, "instance_finalize_migration_src", |
778 |
[self._InstDict(instance), success, live])
|
779 |
|
780 |
@_RpcTimeout(_TMO_SLOW)
|
781 |
def call_instance_get_migration_status(self, node, instance): |
782 |
"""Report migration status.
|
783 |
|
784 |
This is a single-node call that must be executed on the source node.
|
785 |
|
786 |
@type instance: L{objects.Instance}
|
787 |
@param instance: the instance that is being migrated
|
788 |
@rtype: L{objects.MigrationStatus}
|
789 |
@return: the status of the current migration (one of
|
790 |
L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
791 |
progress info that can be retrieved from the hypervisor
|
792 |
|
793 |
"""
|
794 |
result = self._SingleNodeCall(node, "instance_get_migration_status", |
795 |
[self._InstDict(instance)])
|
796 |
if not result.fail_msg and result.payload is not None: |
797 |
result.payload = objects.MigrationStatus.FromDict(result.payload) |
798 |
return result
|
799 |
|
800 |
@_RpcTimeout(_TMO_NORMAL)
|
801 |
def call_instance_reboot(self, node, inst, reboot_type, shutdown_timeout): |
802 |
"""Reboots an instance.
|
803 |
|
804 |
This is a single-node call.
|
805 |
|
806 |
"""
|
807 |
return self._SingleNodeCall(node, "instance_reboot", |
808 |
[self._InstDict(inst), reboot_type,
|
809 |
shutdown_timeout]) |
810 |
|
811 |
@_RpcTimeout(_TMO_1DAY)
|
812 |
def call_instance_os_add(self, node, inst, reinstall, debug, osparams=None): |
813 |
"""Installs an OS on the given instance.
|
814 |
|
815 |
This is a single-node call.
|
816 |
|
817 |
"""
|
818 |
return self._SingleNodeCall(node, "instance_os_add", |
819 |
[self._InstDict(inst, osp=osparams),
|
820 |
reinstall, debug]) |
821 |
|
822 |
@_RpcTimeout(_TMO_SLOW)
|
823 |
def call_instance_run_rename(self, node, inst, old_name, debug): |
824 |
"""Run the OS rename script for an instance.
|
825 |
|
826 |
This is a single-node call.
|
827 |
|
828 |
"""
|
829 |
return self._SingleNodeCall(node, "instance_run_rename", |
830 |
[self._InstDict(inst), old_name, debug])
|
831 |
|
832 |
@_RpcTimeout(_TMO_URGENT)
|
833 |
def call_instance_info(self, node, instance, hname): |
834 |
"""Returns information about a single instance.
|
835 |
|
836 |
This is a single-node call.
|
837 |
|
838 |
@type node: list
|
839 |
@param node: the list of nodes to query
|
840 |
@type instance: string
|
841 |
@param instance: the instance name
|
842 |
@type hname: string
|
843 |
@param hname: the hypervisor type of the instance
|
844 |
|
845 |
"""
|
846 |
return self._SingleNodeCall(node, "instance_info", [instance, hname]) |
847 |
|
848 |
@_RpcTimeout(_TMO_NORMAL)
|
849 |
def call_instance_migratable(self, node, instance): |
850 |
"""Checks whether the given instance can be migrated.
|
851 |
|
852 |
This is a single-node call.
|
853 |
|
854 |
@param node: the node to query
|
855 |
@type instance: L{objects.Instance}
|
856 |
@param instance: the instance to check
|
857 |
|
858 |
|
859 |
"""
|
860 |
return self._SingleNodeCall(node, "instance_migratable", |
861 |
[self._InstDict(instance)])
|
862 |
|
863 |
@_RpcTimeout(_TMO_URGENT)
|
864 |
def call_all_instances_info(self, node_list, hypervisor_list): |
865 |
"""Returns information about all instances on the given nodes.
|
866 |
|
867 |
This is a multi-node call.
|
868 |
|
869 |
@type node_list: list
|
870 |
@param node_list: the list of nodes to query
|
871 |
@type hypervisor_list: list
|
872 |
@param hypervisor_list: the hypervisors to query for instances
|
873 |
|
874 |
"""
|
875 |
return self._MultiNodeCall(node_list, "all_instances_info", |
876 |
[hypervisor_list]) |
877 |
|
878 |
@_RpcTimeout(_TMO_URGENT)
|
879 |
def call_instance_list(self, node_list, hypervisor_list): |
880 |
"""Returns the list of running instances on a given node.
|
881 |
|
882 |
This is a multi-node call.
|
883 |
|
884 |
@type node_list: list
|
885 |
@param node_list: the list of nodes to query
|
886 |
@type hypervisor_list: list
|
887 |
@param hypervisor_list: the hypervisors to query for instances
|
888 |
|
889 |
"""
|
890 |
return self._MultiNodeCall(node_list, "instance_list", [hypervisor_list]) |
891 |
|
892 |
@classmethod
|
893 |
@_RpcTimeout(_TMO_FAST)
|
894 |
def call_node_start_master_daemons(cls, node, no_voting): |
895 |
"""Starts master daemons on a node.
|
896 |
|
897 |
This is a single-node call.
|
898 |
|
899 |
"""
|
900 |
return cls._StaticSingleNodeCall(node, "node_start_master_daemons", |
901 |
[no_voting]) |
902 |
|
903 |
@classmethod
|
904 |
@_RpcTimeout(_TMO_FAST)
|
905 |
def call_node_activate_master_ip(cls, node): |
906 |
"""Activates master IP on a node.
|
907 |
|
908 |
This is a single-node call.
|
909 |
|
910 |
"""
|
911 |
return cls._StaticSingleNodeCall(node, "node_activate_master_ip", []) |
912 |
|
913 |
@classmethod
|
914 |
@_RpcTimeout(_TMO_FAST)
|
915 |
def call_node_stop_master(cls, node): |
916 |
"""Deactivates master IP and stops master daemons on a node.
|
917 |
|
918 |
This is a single-node call.
|
919 |
|
920 |
"""
|
921 |
return cls._StaticSingleNodeCall(node, "node_stop_master", []) |
922 |
|
923 |
@classmethod
|
924 |
@_RpcTimeout(_TMO_FAST)
|
925 |
def call_node_deactivate_master_ip(cls, node): |
926 |
"""Deactivates master IP on a node.
|
927 |
|
928 |
This is a single-node call.
|
929 |
|
930 |
"""
|
931 |
return cls._StaticSingleNodeCall(node, "node_deactivate_master_ip", []) |
932 |
|
933 |
@classmethod
|
934 |
@_RpcTimeout(_TMO_FAST)
|
935 |
def call_node_change_master_netmask(cls, node, netmask): |
936 |
"""Change master IP netmask.
|
937 |
|
938 |
This is a single-node call.
|
939 |
|
940 |
"""
|
941 |
return cls._StaticSingleNodeCall(node, "node_change_master_netmask", |
942 |
[netmask]) |
943 |
|
944 |
@classmethod
|
945 |
@_RpcTimeout(_TMO_URGENT)
|
946 |
def call_master_info(cls, node_list): |
947 |
"""Query master info.
|
948 |
|
949 |
This is a multi-node call.
|
950 |
|
951 |
"""
|
952 |
# TODO: should this method query down nodes?
|
953 |
return cls._StaticMultiNodeCall(node_list, "master_info", []) |
954 |
|
955 |
@classmethod
|
956 |
@_RpcTimeout(_TMO_URGENT)
|
957 |
def call_version(cls, node_list): |
958 |
"""Query node version.
|
959 |
|
960 |
This is a multi-node call.
|
961 |
|
962 |
"""
|
963 |
return cls._StaticMultiNodeCall(node_list, "version", []) |
964 |
|
965 |
@_RpcTimeout(_TMO_NORMAL)
|
966 |
def call_blockdev_create(self, node, bdev, size, owner, on_primary, info): |
967 |
"""Request creation of a given block device.
|
968 |
|
969 |
This is a single-node call.
|
970 |
|
971 |
"""
|
972 |
return self._SingleNodeCall(node, "blockdev_create", |
973 |
[bdev.ToDict(), size, owner, on_primary, info]) |
974 |
|
975 |
@_RpcTimeout(_TMO_SLOW)
|
976 |
def call_blockdev_wipe(self, node, bdev, offset, size): |
977 |
"""Request wipe at given offset with given size of a block device.
|
978 |
|
979 |
This is a single-node call.
|
980 |
|
981 |
"""
|
982 |
return self._SingleNodeCall(node, "blockdev_wipe", |
983 |
[bdev.ToDict(), offset, size]) |
984 |
|
985 |
@_RpcTimeout(_TMO_NORMAL)
|
986 |
def call_blockdev_remove(self, node, bdev): |
987 |
"""Request removal of a given block device.
|
988 |
|
989 |
This is a single-node call.
|
990 |
|
991 |
"""
|
992 |
return self._SingleNodeCall(node, "blockdev_remove", [bdev.ToDict()]) |
993 |
|
994 |
@_RpcTimeout(_TMO_NORMAL)
|
995 |
def call_blockdev_rename(self, node, devlist): |
996 |
"""Request rename of the given block devices.
|
997 |
|
998 |
This is a single-node call.
|
999 |
|
1000 |
"""
|
1001 |
return self._SingleNodeCall(node, "blockdev_rename", |
1002 |
[[(d.ToDict(), uid) for d, uid in devlist]]) |
1003 |
|
1004 |
@_RpcTimeout(_TMO_NORMAL)
|
1005 |
def call_blockdev_pause_resume_sync(self, node, disks, pause): |
1006 |
"""Request a pause/resume of given block device.
|
1007 |
|
1008 |
This is a single-node call.
|
1009 |
|
1010 |
"""
|
1011 |
return self._SingleNodeCall(node, "blockdev_pause_resume_sync", |
1012 |
[[bdev.ToDict() for bdev in disks], pause]) |
1013 |
|
1014 |
@_RpcTimeout(_TMO_NORMAL)
|
1015 |
def call_blockdev_assemble(self, node, disk, owner, on_primary, idx): |
1016 |
"""Request assembling of a given block device.
|
1017 |
|
1018 |
This is a single-node call.
|
1019 |
|
1020 |
"""
|
1021 |
return self._SingleNodeCall(node, "blockdev_assemble", |
1022 |
[disk.ToDict(), owner, on_primary, idx]) |
1023 |
|
1024 |
@_RpcTimeout(_TMO_NORMAL)
|
1025 |
def call_blockdev_shutdown(self, node, disk): |
1026 |
"""Request shutdown of a given block device.
|
1027 |
|
1028 |
This is a single-node call.
|
1029 |
|
1030 |
"""
|
1031 |
return self._SingleNodeCall(node, "blockdev_shutdown", [disk.ToDict()]) |
1032 |
|
1033 |
@_RpcTimeout(_TMO_NORMAL)
|
1034 |
def call_blockdev_addchildren(self, node, bdev, ndevs): |
1035 |
"""Request adding a list of children to a (mirroring) device.
|
1036 |
|
1037 |
This is a single-node call.
|
1038 |
|
1039 |
"""
|
1040 |
return self._SingleNodeCall(node, "blockdev_addchildren", |
1041 |
[bdev.ToDict(), |
1042 |
[disk.ToDict() for disk in ndevs]]) |
1043 |
|
1044 |
@_RpcTimeout(_TMO_NORMAL)
|
1045 |
def call_blockdev_removechildren(self, node, bdev, ndevs): |
1046 |
"""Request removing a list of children from a (mirroring) device.
|
1047 |
|
1048 |
This is a single-node call.
|
1049 |
|
1050 |
"""
|
1051 |
return self._SingleNodeCall(node, "blockdev_removechildren", |
1052 |
[bdev.ToDict(), |
1053 |
[disk.ToDict() for disk in ndevs]]) |
1054 |
|
1055 |
@_RpcTimeout(_TMO_NORMAL)
|
1056 |
def call_blockdev_getmirrorstatus(self, node, disks): |
1057 |
"""Request status of a (mirroring) device.
|
1058 |
|
1059 |
This is a single-node call.
|
1060 |
|
1061 |
"""
|
1062 |
result = self._SingleNodeCall(node, "blockdev_getmirrorstatus", |
1063 |
[dsk.ToDict() for dsk in disks]) |
1064 |
if not result.fail_msg: |
1065 |
result.payload = [objects.BlockDevStatus.FromDict(i) |
1066 |
for i in result.payload] |
1067 |
return result
|
1068 |
|
1069 |
@_RpcTimeout(_TMO_NORMAL)
|
1070 |
def call_blockdev_getmirrorstatus_multi(self, node_list, node_disks): |
1071 |
"""Request status of (mirroring) devices from multiple nodes.
|
1072 |
|
1073 |
This is a multi-node call.
|
1074 |
|
1075 |
"""
|
1076 |
result = self._MultiNodeCall(node_list, "blockdev_getmirrorstatus_multi", |
1077 |
[dict((name, [dsk.ToDict() for dsk in disks]) |
1078 |
for name, disks in node_disks.items())]) |
1079 |
for nres in result.values(): |
1080 |
if nres.fail_msg:
|
1081 |
continue
|
1082 |
|
1083 |
for idx, (success, status) in enumerate(nres.payload): |
1084 |
if success:
|
1085 |
nres.payload[idx] = (success, objects.BlockDevStatus.FromDict(status)) |
1086 |
|
1087 |
return result
|
1088 |
|
1089 |
@_RpcTimeout(_TMO_NORMAL)
|
1090 |
def call_blockdev_find(self, node, disk): |
1091 |
"""Request identification of a given block device.
|
1092 |
|
1093 |
This is a single-node call.
|
1094 |
|
1095 |
"""
|
1096 |
result = self._SingleNodeCall(node, "blockdev_find", [disk.ToDict()]) |
1097 |
if not result.fail_msg and result.payload is not None: |
1098 |
result.payload = objects.BlockDevStatus.FromDict(result.payload) |
1099 |
return result
|
1100 |
|
1101 |
@_RpcTimeout(_TMO_NORMAL)
|
1102 |
def call_blockdev_close(self, node, instance_name, disks): |
1103 |
"""Closes the given block devices.
|
1104 |
|
1105 |
This is a single-node call.
|
1106 |
|
1107 |
"""
|
1108 |
params = [instance_name, [cf.ToDict() for cf in disks]] |
1109 |
return self._SingleNodeCall(node, "blockdev_close", params) |
1110 |
|
1111 |
@_RpcTimeout(_TMO_NORMAL)
|
1112 |
def call_blockdev_getsize(self, node, disks): |
1113 |
"""Returns the size of the given disks.
|
1114 |
|
1115 |
This is a single-node call.
|
1116 |
|
1117 |
"""
|
1118 |
params = [[cf.ToDict() for cf in disks]] |
1119 |
return self._SingleNodeCall(node, "blockdev_getsize", params) |
1120 |
|
1121 |
@_RpcTimeout(_TMO_NORMAL)
|
1122 |
def call_drbd_disconnect_net(self, node_list, nodes_ip, disks): |
1123 |
"""Disconnects the network of the given drbd devices.
|
1124 |
|
1125 |
This is a multi-node call.
|
1126 |
|
1127 |
"""
|
1128 |
return self._MultiNodeCall(node_list, "drbd_disconnect_net", |
1129 |
[nodes_ip, [cf.ToDict() for cf in disks]]) |
1130 |
|
1131 |
@_RpcTimeout(_TMO_NORMAL)
|
1132 |
def call_drbd_attach_net(self, node_list, nodes_ip, |
1133 |
disks, instance_name, multimaster): |
1134 |
"""Disconnects the given drbd devices.
|
1135 |
|
1136 |
This is a multi-node call.
|
1137 |
|
1138 |
"""
|
1139 |
return self._MultiNodeCall(node_list, "drbd_attach_net", |
1140 |
[nodes_ip, [cf.ToDict() for cf in disks], |
1141 |
instance_name, multimaster]) |
1142 |
|
1143 |
@_RpcTimeout(_TMO_SLOW)
|
1144 |
def call_drbd_wait_sync(self, node_list, nodes_ip, disks): |
1145 |
"""Waits for the synchronization of drbd devices is complete.
|
1146 |
|
1147 |
This is a multi-node call.
|
1148 |
|
1149 |
"""
|
1150 |
return self._MultiNodeCall(node_list, "drbd_wait_sync", |
1151 |
[nodes_ip, [cf.ToDict() for cf in disks]]) |
1152 |
|
1153 |
@_RpcTimeout(_TMO_URGENT)
|
1154 |
def call_drbd_helper(self, node_list): |
1155 |
"""Gets drbd helper.
|
1156 |
|
1157 |
This is a multi-node call.
|
1158 |
|
1159 |
"""
|
1160 |
return self._MultiNodeCall(node_list, "drbd_helper", []) |
1161 |
|
1162 |
@classmethod
|
1163 |
@_RpcTimeout(_TMO_NORMAL)
|
1164 |
def call_upload_file(cls, node_list, file_name, address_list=None): |
1165 |
"""Upload a file.
|
1166 |
|
1167 |
The node will refuse the operation in case the file is not on the
|
1168 |
approved file list.
|
1169 |
|
1170 |
This is a multi-node call.
|
1171 |
|
1172 |
@type node_list: list
|
1173 |
@param node_list: the list of node names to upload to
|
1174 |
@type file_name: str
|
1175 |
@param file_name: the filename to upload
|
1176 |
@type address_list: list or None
|
1177 |
@keyword address_list: an optional list of node addresses, in order
|
1178 |
to optimize the RPC speed
|
1179 |
|
1180 |
"""
|
1181 |
file_contents = utils.ReadFile(file_name) |
1182 |
data = _Compress(file_contents) |
1183 |
st = os.stat(file_name) |
1184 |
getents = runtime.GetEnts() |
1185 |
params = [file_name, data, st.st_mode, getents.LookupUid(st.st_uid), |
1186 |
getents.LookupGid(st.st_gid), st.st_atime, st.st_mtime] |
1187 |
return cls._StaticMultiNodeCall(node_list, "upload_file", params, |
1188 |
address_list=address_list) |
1189 |
|
1190 |
@classmethod
|
1191 |
@_RpcTimeout(_TMO_NORMAL)
|
1192 |
def call_write_ssconf_files(cls, node_list, values): |
1193 |
"""Write ssconf files.
|
1194 |
|
1195 |
This is a multi-node call.
|
1196 |
|
1197 |
"""
|
1198 |
return cls._StaticMultiNodeCall(node_list, "write_ssconf_files", [values]) |
1199 |
|
1200 |
@_RpcTimeout(_TMO_NORMAL)
|
1201 |
def call_blockdev_grow(self, node, cf_bdev, amount, dryrun): |
1202 |
"""Request a snapshot of the given block device.
|
1203 |
|
1204 |
This is a single-node call.
|
1205 |
|
1206 |
"""
|
1207 |
return self._SingleNodeCall(node, "blockdev_grow", |
1208 |
[cf_bdev.ToDict(), amount, dryrun]) |
1209 |
|
1210 |
@_RpcTimeout(_TMO_1DAY)
|
1211 |
def call_blockdev_export(self, node, cf_bdev, |
1212 |
dest_node, dest_path, cluster_name): |
1213 |
"""Export a given disk to another node.
|
1214 |
|
1215 |
This is a single-node call.
|
1216 |
|
1217 |
"""
|
1218 |
return self._SingleNodeCall(node, "blockdev_export", |
1219 |
[cf_bdev.ToDict(), dest_node, dest_path, |
1220 |
cluster_name]) |
1221 |
|
1222 |
@_RpcTimeout(_TMO_NORMAL)
|
1223 |
def call_blockdev_snapshot(self, node, cf_bdev): |
1224 |
"""Request a snapshot of the given block device.
|
1225 |
|
1226 |
This is a single-node call.
|
1227 |
|
1228 |
"""
|
1229 |
return self._SingleNodeCall(node, "blockdev_snapshot", [cf_bdev.ToDict()]) |
1230 |
|
1231 |
@classmethod
|
1232 |
@_RpcTimeout(_TMO_NORMAL)
|
1233 |
def call_node_leave_cluster(cls, node, modify_ssh_setup): |
1234 |
"""Requests a node to clean the cluster information it has.
|
1235 |
|
1236 |
This will remove the configuration information from the ganeti data
|
1237 |
dir.
|
1238 |
|
1239 |
This is a single-node call.
|
1240 |
|
1241 |
"""
|
1242 |
return cls._StaticSingleNodeCall(node, "node_leave_cluster", |
1243 |
[modify_ssh_setup]) |
1244 |
|
1245 |
def call_test_delay(self, node_list, duration, read_timeout=None): |
1246 |
"""Sleep for a fixed time on given node(s).
|
1247 |
|
1248 |
This is a multi-node call.
|
1249 |
|
1250 |
"""
|
1251 |
assert read_timeout is None |
1252 |
return self.call_test_delay(node_list, duration, |
1253 |
read_timeout=int(duration + 5)) |
1254 |
|
1255 |
@classmethod
|
1256 |
@_RpcTimeout(_TMO_URGENT)
|
1257 |
def call_jobqueue_update(cls, node_list, address_list, file_name, content): |
1258 |
"""Update job queue.
|
1259 |
|
1260 |
This is a multi-node call.
|
1261 |
|
1262 |
"""
|
1263 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_update", |
1264 |
[file_name, _Compress(content)], |
1265 |
address_list=address_list) |
1266 |
|
1267 |
@classmethod
|
1268 |
@_RpcTimeout(_TMO_NORMAL)
|
1269 |
def call_jobqueue_purge(cls, node): |
1270 |
"""Purge job queue.
|
1271 |
|
1272 |
This is a single-node call.
|
1273 |
|
1274 |
"""
|
1275 |
return cls._StaticSingleNodeCall(node, "jobqueue_purge", []) |
1276 |
|
1277 |
@classmethod
|
1278 |
@_RpcTimeout(_TMO_URGENT)
|
1279 |
def call_jobqueue_rename(cls, node_list, address_list, rename): |
1280 |
"""Rename a job queue file.
|
1281 |
|
1282 |
This is a multi-node call.
|
1283 |
|
1284 |
"""
|
1285 |
return cls._StaticMultiNodeCall(node_list, "jobqueue_rename", rename, |
1286 |
address_list=address_list) |
1287 |
|
1288 |
@_RpcTimeout(_TMO_NORMAL)
|
1289 |
def call_hypervisor_validate_params(self, node_list, hvname, hvparams): |
1290 |
"""Validate the hypervisor params.
|
1291 |
|
1292 |
This is a multi-node call.
|
1293 |
|
1294 |
@type node_list: list
|
1295 |
@param node_list: the list of nodes to query
|
1296 |
@type hvname: string
|
1297 |
@param hvname: the hypervisor name
|
1298 |
@type hvparams: dict
|
1299 |
@param hvparams: the hypervisor parameters to be validated
|
1300 |
|
1301 |
"""
|
1302 |
cluster = self._cfg.GetClusterInfo()
|
1303 |
hv_full = objects.FillDict(cluster.hvparams.get(hvname, {}), hvparams) |
1304 |
return self._MultiNodeCall(node_list, "hypervisor_validate_params", |
1305 |
[hvname, hv_full]) |
1306 |
|
1307 |
@_RpcTimeout(_TMO_NORMAL)
|
1308 |
def call_import_start(self, node, opts, instance, component, |
1309 |
dest, dest_args): |
1310 |
"""Starts a listener for an import.
|
1311 |
|
1312 |
This is a single-node call.
|
1313 |
|
1314 |
@type node: string
|
1315 |
@param node: Node name
|
1316 |
@type instance: C{objects.Instance}
|
1317 |
@param instance: Instance object
|
1318 |
@type component: string
|
1319 |
@param component: which part of the instance is being imported
|
1320 |
|
1321 |
"""
|
1322 |
return self._SingleNodeCall(node, "import_start", |
1323 |
[opts.ToDict(), |
1324 |
self._InstDict(instance), component, dest,
|
1325 |
_EncodeImportExportIO(dest, dest_args)]) |
1326 |
|
1327 |
@_RpcTimeout(_TMO_NORMAL)
|
1328 |
def call_export_start(self, node, opts, host, port, |
1329 |
instance, component, source, source_args): |
1330 |
"""Starts an export daemon.
|
1331 |
|
1332 |
This is a single-node call.
|
1333 |
|
1334 |
@type node: string
|
1335 |
@param node: Node name
|
1336 |
@type instance: C{objects.Instance}
|
1337 |
@param instance: Instance object
|
1338 |
@type component: string
|
1339 |
@param component: which part of the instance is being imported
|
1340 |
|
1341 |
"""
|
1342 |
return self._SingleNodeCall(node, "export_start", |
1343 |
[opts.ToDict(), host, port, |
1344 |
self._InstDict(instance),
|
1345 |
component, source, |
1346 |
_EncodeImportExportIO(source, source_args)]) |