root / snf-cyclades-app / synnefo / logic / reconciliation.py @ a9bb2a1a
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# -*- coding: utf-8 -*-
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#
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# Copyright 2011-2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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#
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"""Business logic for reconciliation
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Reconcile the contents of the DB with the actual state of the
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Ganeti backend.
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Let D be the set of VMs in the DB, G the set of VMs in Ganeti.
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RULES:
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R1. Stale servers in DB:
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For any v in D but not in G:
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Set deleted=True.
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R2. Orphan instances in Ganet:
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For any v in G with deleted=True in D:
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Issue OP_INSTANCE_DESTROY.
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R3. Unsynced operstate:
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For any v whose operating state differs between G and V:
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Set the operating state in D based on the state in G.
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In the code, D, G are Python dicts mapping instance ids to operating state.
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For D, the operating state is chosen from VirtualMachine.OPER_STATES.
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For G, the operating state is True if the machine is up, False otherwise.
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"""
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from django.conf import settings |
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import logging |
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import itertools |
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import bitarray |
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from datetime import datetime |
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from django.db import transaction |
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from synnefo.db.models import (Backend, VirtualMachine, Flavor, |
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pooled_rapi_client, Network, |
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BackendNetwork, BridgePoolTable, |
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MacPrefixPoolTable) |
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from synnefo.db import pools |
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from synnefo.logic import utils, backend as backend_mod |
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logger = logging.getLogger() |
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logging.basicConfig() |
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try:
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CHECK_INTERVAL = settings.RECONCILIATION_CHECK_INTERVAL |
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except AttributeError: |
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CHECK_INTERVAL = 60
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GANETI_JOB_ERROR = "error"
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GANETI_JOBS_PENDING = ["queued", "waiting", "running", "canceling"] |
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GANETI_JOBS_FINALIZED = ["success", "error", "canceled"] |
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class BackendReconciler(object): |
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def __init__(self, backend, logger, options=None): |
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self.backend = backend
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self.log = logger
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self.client = backend.get_client()
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if options is None: |
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self.options = {}
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else:
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self.options = options
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def close(self): |
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self.backend.put_client(self.client) |
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@transaction.commit_on_success
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def reconcile(self): |
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log = self.log
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backend = self.backend
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log.debug("Reconciling backend %s", backend)
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self.db_servers = get_database_servers(backend)
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self.db_servers_keys = set(self.db_servers.keys()) |
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log.debug("Got servers info from database.")
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self.gnt_servers = get_ganeti_servers(backend)
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self.gnt_servers_keys = set(self.gnt_servers.keys()) |
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log.debug("Got servers info from Ganeti backend.")
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self.gnt_jobs = get_ganeti_jobs(backend)
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log.debug("Got jobs from Ganeti backend")
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self.event_time = datetime.now()
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self.stale_servers = self.reconcile_stale_servers() |
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self.orphan_servers = self.reconcile_orphan_servers() |
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self.unsynced_servers = self.reconcile_unsynced_servers() |
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self.close()
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def get_build_status(self, db_server): |
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job_id = db_server.backendjobid |
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if job_id in self.gnt_jobs: |
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gnt_job_status = self.gnt_jobs[job_id]["status"] |
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if gnt_job_status == GANETI_JOB_ERROR:
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return "ERROR" |
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elif gnt_job_status not in GANETI_JOBS_FINALIZED: |
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return "RUNNING" |
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else:
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return "FINALIZED" |
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else:
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return "ERROR" |
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def reconcile_stale_servers(self): |
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# Detect stale servers
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stale = [] |
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stale_keys = self.db_servers_keys - self.gnt_servers_keys |
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for server_id in stale_keys: |
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db_server = self.db_servers[server_id]
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if db_server.operstate == "BUILD": |
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build_status = self.get_build_status(db_server)
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if build_status == "ERROR": |
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# Special handling of BUILD eerrors
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self.reconcile_building_server(db_server)
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elif build_status != "RUNNING": |
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stale.append(server_id) |
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elif (db_server.operstate == "ERROR" and |
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db_server.action != "DESTROY"):
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# Servers at building ERROR are stale only if the user has
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# asked to destroy them.
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pass
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else:
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stale.append(server_id) |
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# Report them
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if stale:
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self.log.info("Found stale servers %s at backend %s", |
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", ".join(map(str, stale)), self.backend) |
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else:
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self.log.debug("No stale servers at backend %s", self.backend) |
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# Fix them
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if stale and self.options["fix_stale"]: |
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for server_id in stale: |
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db_server = self.db_servers[server_id]
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backend_mod.process_op_status( |
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vm=db_server, |
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etime=self.event_time,
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jobid=-0,
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opcode='OP_INSTANCE_REMOVE', status='success', |
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logmsg='Reconciliation: simulated Ganeti event')
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self.log.debug("Simulated Ganeti removal for stale servers.") |
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def reconcile_orphan_servers(self): |
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orphans = self.gnt_servers_keys - self.db_servers_keys |
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if orphans:
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self.log.info("Found orphan servers %s at backend %s", |
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", ".join(map(str, orphans)), self.backend) |
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else:
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self.log.debug("No orphan servers at backend %s", self.backend) |
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if orphans and self.options["fix_orphans"]: |
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for server_id in orphans: |
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server_name = utils.id_to_instance_name(server_id) |
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self.client.DeleteInstance(server_name)
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self.log.debug("Issued OP_INSTANCE_REMOVE for orphan servers.") |
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def reconcile_unsynced_servers(self): |
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#log = self.log
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for server_id in self.db_servers_keys & self.gnt_servers_keys: |
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db_server = self.db_servers[server_id]
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gnt_server = self.gnt_servers[server_id]
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if db_server.operstate == "BUILD": |
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build_status = self.get_build_status(db_server)
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if build_status == "RUNNING": |
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# Do not reconcile building VMs
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continue
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elif build_status == "ERROR": |
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# Special handling of build errors
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self.reconcile_building_server(db_server)
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continue
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self.reconcile_unsynced_operstate(server_id, db_server,
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gnt_server) |
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self.reconcile_unsynced_flavor(server_id, db_server,
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gnt_server) |
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self.reconcile_unsynced_nics(server_id, db_server, gnt_server)
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self.reconcile_unsynced_disks(server_id, db_server, gnt_server)
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if db_server.task is not None: |
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self.reconcile_pending_task(server_id, db_server)
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def reconcile_building_server(self, db_server): |
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self.log.info("Server '%s' is BUILD in DB, but 'ERROR' in Ganeti.", |
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db_server.id) |
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if self.options["fix_unsynced"]: |
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fix_opcode = "OP_INSTANCE_CREATE"
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backend_mod.process_op_status( |
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vm=db_server, |
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etime=self.event_time,
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jobid=-0,
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opcode=fix_opcode, status='error',
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logmsg='Reconciliation: simulated Ganeti event')
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self.log.debug("Simulated Ganeti error build event for" |
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" server '%s'", db_server.id)
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def reconcile_unsynced_operstate(self, server_id, db_server, gnt_server): |
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if db_server.operstate != gnt_server["state"]: |
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self.log.info("Server '%s' is '%s' in DB and '%s' in Ganeti.", |
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server_id, db_server.operstate, gnt_server["state"])
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if self.options["fix_unsynced"]: |
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# If server is in building state, you will have first to
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# reconcile it's creation, to avoid wrong quotas
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if db_server.operstate == "BUILD": |
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backend_mod.process_op_status( |
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vm=db_server, etime=self.event_time, jobid=-0, |
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opcode="OP_INSTANCE_CREATE", status='success', |
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logmsg='Reconciliation: simulated Ganeti event')
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fix_opcode = "OP_INSTANCE_STARTUP"\
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if gnt_server["state"] == "STARTED"\ |
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else "OP_INSTANCE_SHUTDOWN" |
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backend_mod.process_op_status( |
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vm=db_server, etime=self.event_time, jobid=-0, |
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opcode=fix_opcode, status='success',
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logmsg='Reconciliation: simulated Ganeti event')
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self.log.debug("Simulated Ganeti state event for server '%s'", |
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server_id) |
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def reconcile_unsynced_flavor(self, server_id, db_server, gnt_server): |
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db_flavor = db_server.flavor |
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gnt_flavor = gnt_server["flavor"]
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if (db_flavor.ram != gnt_flavor["ram"] or |
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db_flavor.cpu != gnt_flavor["vcpus"]):
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try:
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gnt_flavor = Flavor.objects.get( |
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ram=gnt_flavor["ram"],
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cpu=gnt_flavor["vcpus"],
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disk=db_flavor.disk, |
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disk_template=db_flavor.disk_template) |
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except Flavor.DoesNotExist:
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self.log.warning("Server '%s' has unknown flavor.", server_id) |
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return
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self.log.info("Server '%s' has flavor '%s' in DB and '%s' in" |
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" Ganeti", server_id, db_flavor, gnt_flavor)
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if self.options["fix_unsynced_flavors"]: |
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old_state = db_server.operstate |
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opcode = "OP_INSTANCE_SET_PARAMS"
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beparams = {"vcpus": gnt_flavor.cpu,
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"minmem": gnt_flavor.ram,
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"maxmem": gnt_flavor.ram}
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backend_mod.process_op_status( |
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vm=db_server, etime=self.event_time, jobid=-0, |
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opcode=opcode, status='success',
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beparams=beparams, |
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logmsg='Reconciliation: simulated Ganeti event')
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# process_op_status with beparams will set the vmstate to
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# shutdown. Fix this be returning it to old state
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vm = VirtualMachine.objects.get(pk=server_id) |
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vm.operstate = old_state |
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vm.save() |
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self.log.debug("Simulated Ganeti flavor event for server '%s'", |
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server_id) |
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def reconcile_unsynced_nics(self, server_id, db_server, gnt_server): |
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db_nics = db_server.nics.order_by("index")
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gnt_nics = gnt_server["nics"]
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gnt_nics_parsed = backend_mod.process_ganeti_nics(gnt_nics) |
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if backend_mod.nics_changed(db_nics, gnt_nics_parsed):
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msg = "Found unsynced NICs for server '%s'.\n\t"\
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"DB: %s\n\tGaneti: %s"
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db_nics_str = ", ".join(map(format_db_nic, db_nics)) |
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gnt_nics_str = ", ".join(map(format_gnt_nic, gnt_nics_parsed)) |
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self.log.info(msg, server_id, db_nics_str, gnt_nics_str)
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if self.options["fix_unsynced_nics"]: |
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backend_mod.process_net_status(vm=db_server, |
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etime=self.event_time,
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nics=gnt_nics) |
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def reconcile_unsynced_disks(self, server_id, db_server, gnt_server): |
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pass
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def reconcile_pending_task(self, server_id, db_server): |
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job_id = db_server.task_job_id |
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pending_task = False
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if job_id not in self.gnt_jobs: |
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pending_task = True
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else:
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gnt_job_status = self.gnt_jobs[job_id]["status"] |
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if gnt_job_status in GANETI_JOBS_FINALIZED: |
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pending_task = True
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if pending_task:
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self.log.info("Found server '%s' with pending task: '%s'", |
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server_id, db_server.task) |
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if self.options["fix_pending_tasks"]: |
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db_server.task = None
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db_server.task_job_id = None
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db_server.save() |
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self.log.info("Cleared pending task for server '%s", server_id) |
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def format_db_nic(nic): |
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return "Index: %s, IP: %s Network: %s MAC: %s Firewall: %s" % (nic.index, |
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nic.ipv4, nic.network_id, nic.mac, nic.firewall_profile) |
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def format_gnt_nic(nic): |
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return "Index: %s IP: %s Network: %s MAC: %s Firewall: %s" %\ |
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(nic["index"], nic["ipv4"], nic["network"], nic["mac"], |
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nic["firewall_profile"])
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#
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# Networks
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#
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def get_networks_from_ganeti(backend): |
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prefix = settings.BACKEND_PREFIX_ID + 'net-'
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networks = {} |
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with pooled_rapi_client(backend) as c: |
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for net in c.GetNetworks(bulk=True): |
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if net['name'].startswith(prefix): |
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id = utils.id_from_network_name(net['name'])
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networks[id] = net
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return networks
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def hanging_networks(backend, GNets): |
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"""Get networks that are not connected to all Nodegroups.
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"""
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def get_network_groups(group_list): |
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groups = set()
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for (name, mode, link) in group_list: |
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groups.add(name) |
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return groups
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with pooled_rapi_client(backend) as c: |
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groups = set(c.GetGroups())
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hanging = {} |
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for id, info in GNets.items(): |
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group_list = get_network_groups(info['group_list'])
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if group_list != groups:
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hanging[id] = groups - group_list
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return hanging
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|
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def get_online_backends(): |
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return Backend.objects.filter(offline=False) |
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def get_database_servers(backend): |
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servers = backend.virtual_machines.select_related("nics", "flavor")\ |
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.filter(deleted=False)
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return dict([(s.id, s) for s in servers]) |
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|
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def get_ganeti_servers(backend): |
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gnt_instances = backend_mod.get_instances(backend) |
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# Filter out non-synnefo instances
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snf_backend_prefix = settings.BACKEND_PREFIX_ID |
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gnt_instances = filter(lambda i: i["name"].startswith(snf_backend_prefix), |
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gnt_instances) |
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gnt_instances = map(parse_gnt_instance, gnt_instances)
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return dict([(i["id"], i) for i in gnt_instances if i["id"] is not None]) |
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|
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|
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def parse_gnt_instance(instance): |
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try:
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instance_id = utils.id_from_instance_name(instance['name'])
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except Exception: |
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logger.error("Ignoring instance with malformed name %s",
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instance['name'])
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return (None, None) |
402 |
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beparams = instance["beparams"]
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|
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vcpus = beparams["vcpus"]
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ram = beparams["maxmem"]
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state = instance["oper_state"] and "STARTED" or "STOPPED" |
408 |
|
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return {
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"id": instance_id,
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"state": state, # FIX |
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"updated": datetime.fromtimestamp(instance["mtime"]), |
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"disks": disks_from_instance(instance),
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"nics": nics_from_instance(instance),
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"flavor": {"vcpus": vcpus, |
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"ram": ram},
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"tags": instance["tags"] |
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} |
419 |
|
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|
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def nics_from_instance(i): |
422 |
ips = zip(itertools.repeat('ip'), i['nic.ips']) |
423 |
macs = zip(itertools.repeat('mac'), i['nic.macs']) |
424 |
networks = zip(itertools.repeat('network'), i['nic.networks']) |
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# modes = zip(itertools.repeat('mode'), i['nic.modes'])
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# links = zip(itertools.repeat('link'), i['nic.links'])
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# nics = zip(ips,macs,modes,networks,links)
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nics = zip(ips, macs, networks)
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nics = map(lambda x: dict(x), nics) |
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#nics = dict(enumerate(nics))
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tags = i["tags"]
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for tag in tags: |
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t = tag.split(":")
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if t[0:2] == ["synnefo", "network"]: |
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if len(t) != 4: |
436 |
logger.error("Malformed synefo tag %s", tag)
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continue
|
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try:
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index = int(t[2]) |
440 |
nics[index]['firewall'] = t[3] |
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except ValueError: |
442 |
logger.error("Malformed synnefo tag %s", tag)
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except IndexError: |
444 |
logger.error("Found tag %s for non-existent NIC %d",
|
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tag, index) |
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return nics
|
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|
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|
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def get_ganeti_jobs(backend): |
450 |
gnt_jobs = backend_mod.get_jobs(backend) |
451 |
return dict([(int(j["id"]), j) for j in gnt_jobs]) |
452 |
|
453 |
|
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def disks_from_instance(i): |
455 |
return dict([(index, {"size": size}) |
456 |
for index, size in enumerate(i["disk.sizes"])]) |
457 |
|
458 |
|
459 |
class NetworkReconciler(object): |
460 |
def __init__(self, logger, fix=False): |
461 |
self.log = logger
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self.fix = fix
|
463 |
|
464 |
@transaction.commit_on_success
|
465 |
def reconcile_networks(self): |
466 |
# Get models from DB
|
467 |
self.backends = Backend.objects.exclude(offline=True) |
468 |
self.networks = Network.objects.filter(deleted=False) |
469 |
|
470 |
self.event_time = datetime.now()
|
471 |
|
472 |
# Get info from all ganeti backends
|
473 |
self.ganeti_networks = {}
|
474 |
self.ganeti_hanging_networks = {}
|
475 |
for b in self.backends: |
476 |
g_nets = get_networks_from_ganeti(b) |
477 |
self.ganeti_networks[b] = g_nets
|
478 |
g_hanging_nets = hanging_networks(b, g_nets) |
479 |
self.ganeti_hanging_networks[b] = g_hanging_nets
|
480 |
|
481 |
self._reconcile_orphan_networks()
|
482 |
|
483 |
for network in self.networks: |
484 |
self._reconcile_network(network)
|
485 |
|
486 |
@transaction.commit_on_success
|
487 |
def _reconcile_network(self, network): |
488 |
"""Reconcile a network with corresponging Ganeti networks.
|
489 |
|
490 |
Reconcile a Network and the associated BackendNetworks with the
|
491 |
corresponding Ganeti networks in all Ganeti backends.
|
492 |
|
493 |
"""
|
494 |
network_ip_pool = network.get_pool() # X-Lock on IP Pool
|
495 |
for bend in self.backends: |
496 |
bnet = get_backend_network(network, bend) |
497 |
gnet = self.ganeti_networks[bend].get(network.id)
|
498 |
if not bnet: |
499 |
if network.floating_ip_pool:
|
500 |
# Network is a floating IP pool and does not exist in
|
501 |
# backend. We need to create it
|
502 |
bnet = self.reconcile_parted_network(network, bend)
|
503 |
elif not gnet: |
504 |
# Network does not exist either in Ganeti nor in BD.
|
505 |
continue
|
506 |
else:
|
507 |
# Network exists in Ganeti and not in DB.
|
508 |
if network.action != "DESTROY" and not network.public: |
509 |
bnet = self.reconcile_parted_network(network, bend)
|
510 |
else:
|
511 |
continue
|
512 |
|
513 |
if not gnet: |
514 |
# Network does not exist in Ganeti. If the network action
|
515 |
# is DESTROY, we have to mark as deleted in DB, else we
|
516 |
# have to create it in Ganeti.
|
517 |
if network.action == "DESTROY": |
518 |
if bnet.operstate != "DELETED": |
519 |
self.reconcile_stale_network(bnet)
|
520 |
else:
|
521 |
self.reconcile_missing_network(network, bend)
|
522 |
# Skip rest reconciliation!
|
523 |
continue
|
524 |
|
525 |
try:
|
526 |
hanging_groups = self.ganeti_hanging_networks[bend][network.id]
|
527 |
except KeyError: |
528 |
# Network is connected to all nodegroups
|
529 |
hanging_groups = [] |
530 |
|
531 |
if hanging_groups:
|
532 |
# CASE-3: Ganeti networks not connected to all nodegroups
|
533 |
self.reconcile_hanging_groups(network, bend,
|
534 |
hanging_groups) |
535 |
continue
|
536 |
|
537 |
if bnet.operstate != 'ACTIVE': |
538 |
# CASE-4: Unsynced network state. At this point the network
|
539 |
# exists and is connected to all nodes so is must be
|
540 |
# active!
|
541 |
self.reconcile_unsynced_network(network, bend, bnet)
|
542 |
|
543 |
# Check that externally reserved IPs of the network in Ganeti are
|
544 |
# also externally reserved to the IP pool
|
545 |
externally_reserved = gnet['external_reservations']
|
546 |
if externally_reserved:
|
547 |
for ip in externally_reserved.split(","): |
548 |
ip = ip.strip() |
549 |
if not network_ip_pool.is_reserved(ip): |
550 |
msg = ("D: IP '%s' is reserved for network '%s' in"
|
551 |
" backend '%s' but not in DB.")
|
552 |
self.log.info(msg, ip, network, bend)
|
553 |
if self.fix: |
554 |
network_ip_pool.reserve(ip, external=True)
|
555 |
network_ip_pool.save() |
556 |
self.log.info("F: Reserved IP '%s'", ip) |
557 |
|
558 |
def reconcile_parted_network(self, network, backend): |
559 |
self.log.info("D: Missing DB entry for network %s in backend %s", |
560 |
network, backend) |
561 |
if self.fix: |
562 |
network.create_backend_network(backend) |
563 |
self.log.info("F: Created DB entry") |
564 |
bnet = get_backend_network(network, backend) |
565 |
return bnet
|
566 |
|
567 |
def reconcile_stale_network(self, backend_network): |
568 |
self.log.info("D: Stale DB entry for network %s in backend %s", |
569 |
backend_network.network, backend_network.backend) |
570 |
if self.fix: |
571 |
backend_mod.process_network_status( |
572 |
backend_network, self.event_time, 0, |
573 |
"OP_NETWORK_REMOVE",
|
574 |
"success",
|
575 |
"Reconciliation simulated event")
|
576 |
self.log.info("F: Reconciled event: OP_NETWORK_REMOVE") |
577 |
|
578 |
def reconcile_missing_network(self, network, backend): |
579 |
self.log.info("D: Missing Ganeti network %s in backend %s", |
580 |
network, backend) |
581 |
if self.fix: |
582 |
backend_mod.create_network(network, backend) |
583 |
self.log.info("F: Issued OP_NETWORK_CONNECT") |
584 |
|
585 |
def reconcile_hanging_groups(self, network, backend, hanging_groups): |
586 |
self.log.info('D: Network %s in backend %s is not connected to ' |
587 |
'the following groups:', network, backend)
|
588 |
self.log.info('- ' + '\n- '.join(hanging_groups)) |
589 |
if self.fix: |
590 |
for group in hanging_groups: |
591 |
self.log.info('F: Connecting network %s to nodegroup %s', |
592 |
network, group) |
593 |
backend_mod.connect_network(network, backend, depends=[], |
594 |
group=group) |
595 |
|
596 |
def reconcile_unsynced_network(self, network, backend, backend_network): |
597 |
self.log.info("D: Unsynced network %s in backend %s", network, backend) |
598 |
if self.fix: |
599 |
self.log.info("F: Issuing OP_NETWORK_CONNECT") |
600 |
backend_mod.process_network_status( |
601 |
backend_network, self.event_time, 0, |
602 |
"OP_NETWORK_CONNECT",
|
603 |
"success",
|
604 |
"Reconciliation simulated eventd")
|
605 |
|
606 |
def _reconcile_orphan_networks(self): |
607 |
db_networks = self.networks
|
608 |
ganeti_networks = self.ganeti_networks
|
609 |
# Detect Orphan Networks in Ganeti
|
610 |
db_network_ids = set([net.id for net in db_networks]) |
611 |
for back_end, ganeti_networks in ganeti_networks.items(): |
612 |
ganeti_network_ids = set(ganeti_networks.keys())
|
613 |
orphans = ganeti_network_ids - db_network_ids |
614 |
|
615 |
if len(orphans) > 0: |
616 |
self.log.info('D: Orphan Networks in backend %s:', |
617 |
back_end.clustername) |
618 |
self.log.info('- ' + '\n- '.join([str(o) for o in orphans])) |
619 |
if self.fix: |
620 |
for net_id in orphans: |
621 |
self.log.info('Disconnecting and deleting network %d', |
622 |
net_id) |
623 |
try:
|
624 |
network = Network.objects.get(id=net_id) |
625 |
backend_mod.delete_network(network, |
626 |
backend=back_end) |
627 |
except Network.DoesNotExist:
|
628 |
self.log.info("Not entry for network %s in DB !!", |
629 |
net_id) |
630 |
|
631 |
|
632 |
def get_backend_network(network, backend): |
633 |
try:
|
634 |
return BackendNetwork.objects.get(network=network, backend=backend)
|
635 |
except BackendNetwork.DoesNotExist:
|
636 |
return None |
637 |
|
638 |
|
639 |
class PoolReconciler(object): |
640 |
def __init__(self, logger, fix=False): |
641 |
self.log = logger
|
642 |
self.fix = fix
|
643 |
|
644 |
def reconcile(self): |
645 |
self.reconcile_bridges()
|
646 |
self.reconcile_mac_prefixes()
|
647 |
for network in Network.objects.filter(deleted=False): |
648 |
self.reconcile_ip_pool(network)
|
649 |
|
650 |
@transaction.commit_on_success
|
651 |
def reconcile_bridges(self): |
652 |
networks = Network.objects.filter(deleted=False,
|
653 |
flavor="PHYSICAL_VLAN")
|
654 |
check_unique_values(objects=networks, field='link', logger=self.log) |
655 |
try:
|
656 |
pool = BridgePoolTable.get_pool() |
657 |
except pools.EmptyPool:
|
658 |
self.log.info("There is no available pool for bridges.") |
659 |
return
|
660 |
|
661 |
used_bridges = set(networks.values_list('link', flat=True)) |
662 |
check_pool_consistent(pool=pool, pool_class=pools.BridgePool, |
663 |
used_values=used_bridges, fix=self.fix,
|
664 |
logger=self.log)
|
665 |
|
666 |
@transaction.commit_on_success
|
667 |
def reconcile_mac_prefixes(self): |
668 |
networks = Network.objects.filter(deleted=False, flavor="MAC_FILTERED") |
669 |
check_unique_values(objects=networks, field='mac_prefix',
|
670 |
logger=self.log)
|
671 |
try:
|
672 |
pool = MacPrefixPoolTable.get_pool() |
673 |
except pools.EmptyPool:
|
674 |
self.log.info("There is no available pool for MAC prefixes.") |
675 |
return
|
676 |
|
677 |
used_mac_prefixes = set(networks.values_list('mac_prefix', flat=True)) |
678 |
check_pool_consistent(pool=pool, pool_class=pools.MacPrefixPool, |
679 |
used_values=used_mac_prefixes, fix=self.fix,
|
680 |
logger=self.log)
|
681 |
|
682 |
@transaction.commit_on_success
|
683 |
def reconcile_ip_pool(self, network): |
684 |
# Check that all NICs have unique IPv4 address
|
685 |
nics = network.nics.filter(ipv4__isnull=False)
|
686 |
check_unique_values(objects=nics, field='ipv4', logger=self.log) |
687 |
|
688 |
# Check that all Floating IPs have unique IPv4 address
|
689 |
floating_ips = network.floating_ips.filter(deleted=False)
|
690 |
check_unique_values(objects=floating_ips, field='ipv4',
|
691 |
logger=self.log)
|
692 |
|
693 |
# First get(lock) the IP pool of the network to prevent new NICs
|
694 |
# from being created.
|
695 |
network_ip_pool = network.get_pool() |
696 |
used_ips = set(list(nics.values_list("ipv4", flat=True)) + |
697 |
list(floating_ips.values_list("ipv4", flat=True))) |
698 |
|
699 |
check_pool_consistent(pool=network_ip_pool, |
700 |
pool_class=pools.IPPool, |
701 |
used_values=used_ips, |
702 |
fix=self.fix, logger=self.log) |
703 |
|
704 |
|
705 |
def check_unique_values(objects, field, logger): |
706 |
used_values = list(objects.values_list(field, flat=True)) |
707 |
if len(used_values) != len(set(used_values)): |
708 |
duplicate_values = [v for v in used_values if used_values.count(v) > 1] |
709 |
for value in duplicate_values: |
710 |
filter_args = {field: value} |
711 |
using_objects = objects.filter(**filter_args) |
712 |
msg = "Value '%s' is used as %s for more than one objects: %s"
|
713 |
logger.error(msg, value, field, ",".join(map(str, using_objects))) |
714 |
return False |
715 |
logger.debug("Values for field '%s' are unique.", field)
|
716 |
return True |
717 |
|
718 |
|
719 |
def check_pool_consistent(pool, pool_class, used_values, fix, logger): |
720 |
dummy_pool = create_empty_pool(pool, pool_class) |
721 |
[dummy_pool.reserve(value) for value in used_values] |
722 |
if dummy_pool.available != pool.available:
|
723 |
msg = "'%s' is not consistent!\nPool: %s\nUsed: %s"
|
724 |
pool_diff = dummy_pool.available ^ pool.available |
725 |
for index in pool_diff.itersearch(bitarray.bitarray("1")): |
726 |
value = pool.index_to_value(int(index))
|
727 |
msg = "%s is incosistent! Value '%s' is %s but should be %s."
|
728 |
value1 = pool.is_available(value) and "available" or "unavailable" |
729 |
value2 = dummy_pool.is_available(value) and "available"\ |
730 |
or "unavailable" |
731 |
logger.error(msg, pool, value, value1, value2) |
732 |
if fix:
|
733 |
pool.available = dummy_pool.available |
734 |
pool.save() |
735 |
logger.info("Fixed available map of pool '%s'", pool)
|
736 |
|
737 |
|
738 |
def create_empty_pool(pool, pool_class): |
739 |
pool_row = pool.pool_table |
740 |
pool_row.available_map = ""
|
741 |
pool_row.reserved_map = ""
|
742 |
return pool_class(pool_row)
|