root / snf-cyclades-app / synnefo / logic / reconciliation.py @ 326c3ec8
History | View | Annotate | Download (30.2 kB)
1 |
# -*- coding: utf-8 -*-
|
---|---|
2 |
#
|
3 |
# Copyright 2011-2013 GRNET S.A. All rights reserved.
|
4 |
#
|
5 |
# Redistribution and use in source and binary forms, with or
|
6 |
# without modification, are permitted provided that the following
|
7 |
# conditions are met:
|
8 |
#
|
9 |
# 1. Redistributions of source code must retain the above
|
10 |
# copyright notice, this list of conditions and the following
|
11 |
# disclaimer.
|
12 |
#
|
13 |
# 2. Redistributions in binary form must reproduce the above
|
14 |
# copyright notice, this list of conditions and the following
|
15 |
# disclaimer in the documentation and/or other materials
|
16 |
# provided with the distribution.
|
17 |
#
|
18 |
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
19 |
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
20 |
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
21 |
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
22 |
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
23 |
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
24 |
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
25 |
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
26 |
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
27 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
28 |
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
29 |
# POSSIBILITY OF SUCH DAMAGE.
|
30 |
#
|
31 |
# The views and conclusions contained in the software and
|
32 |
# documentation are those of the authors and should not be
|
33 |
# interpreted as representing official policies, either expressed
|
34 |
# or implied, of GRNET S.A.
|
35 |
#
|
36 |
"""Business logic for reconciliation
|
37 |
|
38 |
Reconcile the contents of the DB with the actual state of the
|
39 |
Ganeti backend.
|
40 |
|
41 |
Let D be the set of VMs in the DB, G the set of VMs in Ganeti.
|
42 |
RULES:
|
43 |
R1. Stale servers in DB:
|
44 |
For any v in D but not in G:
|
45 |
Set deleted=True.
|
46 |
R2. Orphan instances in Ganet:
|
47 |
For any v in G with deleted=True in D:
|
48 |
Issue OP_INSTANCE_DESTROY.
|
49 |
R3. Unsynced operstate:
|
50 |
For any v whose operating state differs between G and V:
|
51 |
Set the operating state in D based on the state in G.
|
52 |
In the code, D, G are Python dicts mapping instance ids to operating state.
|
53 |
For D, the operating state is chosen from VirtualMachine.OPER_STATES.
|
54 |
For G, the operating state is True if the machine is up, False otherwise.
|
55 |
|
56 |
"""
|
57 |
|
58 |
|
59 |
from django.conf import settings |
60 |
|
61 |
import logging |
62 |
import itertools |
63 |
import bitarray |
64 |
from datetime import datetime |
65 |
|
66 |
from django.db import transaction |
67 |
from synnefo.db.models import (Backend, VirtualMachine, Flavor, |
68 |
pooled_rapi_client, Network, |
69 |
BackendNetwork, BridgePoolTable, |
70 |
MacPrefixPoolTable) |
71 |
from synnefo.db import pools |
72 |
from synnefo.logic import utils, backend as backend_mod |
73 |
|
74 |
logger = logging.getLogger() |
75 |
logging.basicConfig() |
76 |
|
77 |
try:
|
78 |
CHECK_INTERVAL = settings.RECONCILIATION_CHECK_INTERVAL |
79 |
except AttributeError: |
80 |
CHECK_INTERVAL = 60
|
81 |
|
82 |
GANETI_JOB_ERROR = "error"
|
83 |
GANETI_JOBS_PENDING = ["queued", "waiting", "running", "canceling"] |
84 |
GANETI_JOBS_FINALIZED = ["success", "error", "canceled"] |
85 |
|
86 |
|
87 |
class BackendReconciler(object): |
88 |
def __init__(self, backend, logger, options=None): |
89 |
self.backend = backend
|
90 |
self.log = logger
|
91 |
self.client = backend.get_client()
|
92 |
if options is None: |
93 |
self.options = {}
|
94 |
else:
|
95 |
self.options = options
|
96 |
|
97 |
def close(self): |
98 |
self.backend.put_client(self.client) |
99 |
|
100 |
@transaction.commit_on_success
|
101 |
def reconcile(self): |
102 |
log = self.log
|
103 |
backend = self.backend
|
104 |
log.debug("Reconciling backend %s", backend)
|
105 |
|
106 |
self.db_servers = get_database_servers(backend)
|
107 |
self.db_servers_keys = set(self.db_servers.keys()) |
108 |
log.debug("Got servers info from database.")
|
109 |
|
110 |
self.gnt_servers = get_ganeti_servers(backend)
|
111 |
self.gnt_servers_keys = set(self.gnt_servers.keys()) |
112 |
log.debug("Got servers info from Ganeti backend.")
|
113 |
|
114 |
self.gnt_jobs = get_ganeti_jobs(backend)
|
115 |
log.debug("Got jobs from Ganeti backend")
|
116 |
|
117 |
self.event_time = datetime.now()
|
118 |
|
119 |
self.stale_servers = self.reconcile_stale_servers() |
120 |
self.orphan_servers = self.reconcile_orphan_servers() |
121 |
self.unsynced_servers = self.reconcile_unsynced_servers() |
122 |
self.close()
|
123 |
|
124 |
def get_build_status(self, db_server): |
125 |
job_id = db_server.backendjobid |
126 |
if job_id in self.gnt_jobs: |
127 |
gnt_job_status = self.gnt_jobs[job_id]["status"] |
128 |
if gnt_job_status == GANETI_JOB_ERROR:
|
129 |
return "ERROR" |
130 |
elif gnt_job_status not in GANETI_JOBS_FINALIZED: |
131 |
return "RUNNING" |
132 |
else:
|
133 |
return "FINALIZED" |
134 |
else:
|
135 |
return "ERROR" |
136 |
|
137 |
def reconcile_stale_servers(self): |
138 |
# Detect stale servers
|
139 |
stale = [] |
140 |
stale_keys = self.db_servers_keys - self.gnt_servers_keys |
141 |
for server_id in stale_keys: |
142 |
db_server = self.db_servers[server_id]
|
143 |
if db_server.operstate == "BUILD": |
144 |
build_status = self.get_build_status(db_server)
|
145 |
if build_status == "ERROR": |
146 |
# Special handling of BUILD eerrors
|
147 |
self.reconcile_building_server(db_server)
|
148 |
elif build_status != "RUNNING": |
149 |
stale.append(server_id) |
150 |
elif (db_server.operstate == "ERROR" and |
151 |
db_server.action != "DESTROY"):
|
152 |
# Servers at building ERROR are stale only if the user has
|
153 |
# asked to destroy them.
|
154 |
pass
|
155 |
else:
|
156 |
stale.append(server_id) |
157 |
|
158 |
# Report them
|
159 |
if stale:
|
160 |
self.log.info("Found stale servers %s at backend %s", |
161 |
", ".join(map(str, stale)), self.backend) |
162 |
else:
|
163 |
self.log.debug("No stale servers at backend %s", self.backend) |
164 |
|
165 |
# Fix them
|
166 |
if stale and self.options["fix_stale"]: |
167 |
for server_id in stale: |
168 |
db_server = self.db_servers[server_id]
|
169 |
backend_mod.process_op_status( |
170 |
vm=db_server, |
171 |
etime=self.event_time,
|
172 |
jobid=-0,
|
173 |
opcode='OP_INSTANCE_REMOVE', status='success', |
174 |
logmsg='Reconciliation: simulated Ganeti event')
|
175 |
self.log.debug("Simulated Ganeti removal for stale servers.") |
176 |
|
177 |
def reconcile_orphan_servers(self): |
178 |
orphans = self.gnt_servers_keys - self.db_servers_keys |
179 |
if orphans:
|
180 |
self.log.info("Found orphan servers %s at backend %s", |
181 |
", ".join(map(str, orphans)), self.backend) |
182 |
else:
|
183 |
self.log.debug("No orphan servers at backend %s", self.backend) |
184 |
|
185 |
if orphans and self.options["fix_orphans"]: |
186 |
for server_id in orphans: |
187 |
server_name = utils.id_to_instance_name(server_id) |
188 |
self.client.DeleteInstance(server_name)
|
189 |
self.log.debug("Issued OP_INSTANCE_REMOVE for orphan servers.") |
190 |
|
191 |
def reconcile_unsynced_servers(self): |
192 |
#log = self.log
|
193 |
for server_id in self.db_servers_keys & self.gnt_servers_keys: |
194 |
db_server = self.db_servers[server_id]
|
195 |
gnt_server = self.gnt_servers[server_id]
|
196 |
if db_server.operstate == "BUILD": |
197 |
build_status = self.get_build_status(db_server)
|
198 |
if build_status == "RUNNING": |
199 |
# Do not reconcile building VMs
|
200 |
continue
|
201 |
elif build_status == "ERROR": |
202 |
# Special handling of build errors
|
203 |
self.reconcile_building_server(db_server)
|
204 |
continue
|
205 |
|
206 |
self.reconcile_unsynced_operstate(server_id, db_server,
|
207 |
gnt_server) |
208 |
self.reconcile_unsynced_flavor(server_id, db_server,
|
209 |
gnt_server) |
210 |
self.reconcile_unsynced_nics(server_id, db_server, gnt_server)
|
211 |
self.reconcile_unsynced_disks(server_id, db_server, gnt_server)
|
212 |
if db_server.task is not None: |
213 |
self.reconcile_pending_task(server_id, db_server)
|
214 |
|
215 |
def reconcile_building_server(self, db_server): |
216 |
self.log.info("Server '%s' is BUILD in DB, but 'ERROR' in Ganeti.", |
217 |
db_server.id) |
218 |
if self.options["fix_unsynced"]: |
219 |
fix_opcode = "OP_INSTANCE_CREATE"
|
220 |
backend_mod.process_op_status( |
221 |
vm=db_server, |
222 |
etime=self.event_time,
|
223 |
jobid=-0,
|
224 |
opcode=fix_opcode, status='error',
|
225 |
logmsg='Reconciliation: simulated Ganeti event')
|
226 |
self.log.debug("Simulated Ganeti error build event for" |
227 |
" server '%s'", db_server.id)
|
228 |
|
229 |
def reconcile_unsynced_operstate(self, server_id, db_server, gnt_server): |
230 |
if db_server.operstate != gnt_server["state"]: |
231 |
self.log.info("Server '%s' is '%s' in DB and '%s' in Ganeti.", |
232 |
server_id, db_server.operstate, gnt_server["state"])
|
233 |
if self.options["fix_unsynced"]: |
234 |
# If server is in building state, you will have first to
|
235 |
# reconcile it's creation, to avoid wrong quotas
|
236 |
if db_server.operstate == "BUILD": |
237 |
backend_mod.process_op_status( |
238 |
vm=db_server, etime=self.event_time, jobid=-0, |
239 |
opcode="OP_INSTANCE_CREATE", status='success', |
240 |
logmsg='Reconciliation: simulated Ganeti event')
|
241 |
fix_opcode = "OP_INSTANCE_STARTUP"\
|
242 |
if gnt_server["state"] == "STARTED"\ |
243 |
else "OP_INSTANCE_SHUTDOWN" |
244 |
backend_mod.process_op_status( |
245 |
vm=db_server, etime=self.event_time, jobid=-0, |
246 |
opcode=fix_opcode, status='success',
|
247 |
logmsg='Reconciliation: simulated Ganeti event')
|
248 |
self.log.debug("Simulated Ganeti state event for server '%s'", |
249 |
server_id) |
250 |
|
251 |
def reconcile_unsynced_flavor(self, server_id, db_server, gnt_server): |
252 |
db_flavor = db_server.flavor |
253 |
gnt_flavor = gnt_server["flavor"]
|
254 |
if (db_flavor.ram != gnt_flavor["ram"] or |
255 |
db_flavor.cpu != gnt_flavor["vcpus"]):
|
256 |
try:
|
257 |
gnt_flavor = Flavor.objects.get( |
258 |
ram=gnt_flavor["ram"],
|
259 |
cpu=gnt_flavor["vcpus"],
|
260 |
disk=db_flavor.disk, |
261 |
disk_template=db_flavor.disk_template) |
262 |
except Flavor.DoesNotExist:
|
263 |
self.log.warning("Server '%s' has unknown flavor.", server_id) |
264 |
return
|
265 |
|
266 |
self.log.info("Server '%s' has flavor '%s' in DB and '%s' in" |
267 |
" Ganeti", server_id, db_flavor, gnt_flavor)
|
268 |
if self.options["fix_unsynced_flavors"]: |
269 |
old_state = db_server.operstate |
270 |
opcode = "OP_INSTANCE_SET_PARAMS"
|
271 |
beparams = {"vcpus": gnt_flavor.cpu,
|
272 |
"minmem": gnt_flavor.ram,
|
273 |
"maxmem": gnt_flavor.ram}
|
274 |
backend_mod.process_op_status( |
275 |
vm=db_server, etime=self.event_time, jobid=-0, |
276 |
opcode=opcode, status='success',
|
277 |
job_fields={"beparams": beparams},
|
278 |
logmsg='Reconciliation: simulated Ganeti event')
|
279 |
# process_op_status with beparams will set the vmstate to
|
280 |
# shutdown. Fix this be returning it to old state
|
281 |
vm = VirtualMachine.objects.get(pk=server_id) |
282 |
vm.operstate = old_state |
283 |
vm.save() |
284 |
self.log.debug("Simulated Ganeti flavor event for server '%s'", |
285 |
server_id) |
286 |
|
287 |
def reconcile_unsynced_nics(self, server_id, db_server, gnt_server): |
288 |
building_time = (self.event_time -
|
289 |
backend_mod.BUILDING_NIC_TIMEOUT) |
290 |
db_nics = db_server.nics.exclude(state="BUILDING",
|
291 |
created__lte=building_time) \ |
292 |
.order_by("id")
|
293 |
gnt_nics = gnt_server["nics"]
|
294 |
gnt_nics_parsed = backend_mod.process_ganeti_nics(gnt_nics) |
295 |
nics_changed = len(db_nics) != len(gnt_nics) |
296 |
for db_nic, gnt_nic in zip(db_nics, sorted(gnt_nics_parsed.items())): |
297 |
gnt_nic_id, gnt_nic = gnt_nic |
298 |
if (db_nic.id == gnt_nic_id) and\ |
299 |
backend_mod.nics_are_equal(db_nic, gnt_nic): |
300 |
continue
|
301 |
else:
|
302 |
nics_changed = True
|
303 |
break
|
304 |
if nics_changed:
|
305 |
msg = "Found unsynced NICs for server '%s'.\n"\
|
306 |
"\tDB:\n\t\t%s\n\tGaneti:\n\t\t%s"
|
307 |
db_nics_str = "\n\t\t".join(map(format_db_nic, db_nics)) |
308 |
gnt_nics_str = "\n\t\t".join(map(format_gnt_nic, |
309 |
sorted(gnt_nics_parsed.items())))
|
310 |
self.log.info(msg, server_id, db_nics_str, gnt_nics_str)
|
311 |
if self.options["fix_unsynced_nics"]: |
312 |
backend_mod.process_net_status(vm=db_server, |
313 |
etime=self.event_time,
|
314 |
nics=gnt_nics) |
315 |
|
316 |
def reconcile_unsynced_disks(self, server_id, db_server, gnt_server): |
317 |
pass
|
318 |
|
319 |
def reconcile_pending_task(self, server_id, db_server): |
320 |
job_id = db_server.task_job_id |
321 |
pending_task = False
|
322 |
if job_id not in self.gnt_jobs: |
323 |
pending_task = True
|
324 |
else:
|
325 |
gnt_job_status = self.gnt_jobs[job_id]["status"] |
326 |
if gnt_job_status in GANETI_JOBS_FINALIZED: |
327 |
pending_task = True
|
328 |
|
329 |
if pending_task:
|
330 |
self.log.info("Found server '%s' with pending task: '%s'", |
331 |
server_id, db_server.task) |
332 |
if self.options["fix_pending_tasks"]: |
333 |
db_server.task = None
|
334 |
db_server.task_job_id = None
|
335 |
db_server.save() |
336 |
self.log.info("Cleared pending task for server '%s", server_id) |
337 |
|
338 |
|
339 |
NIC_MSG = ": %s\t".join(["ID", "State", "IP", "Network", "MAC", "Index", |
340 |
"Firewall"]) + ": %s" |
341 |
|
342 |
|
343 |
def format_db_nic(nic): |
344 |
return NIC_MSG % (nic.id, nic.state, nic.ipv4, nic.network_id, nic.mac,
|
345 |
nic.index, nic.firewall_profile) |
346 |
|
347 |
|
348 |
def format_gnt_nic(nic): |
349 |
nic_name, nic = nic |
350 |
return NIC_MSG % (nic_name, nic["state"], nic["ipv4"], nic["network"].id, |
351 |
nic["mac"], nic["index"], nic["firewall_profile"]) |
352 |
|
353 |
|
354 |
#
|
355 |
# Networks
|
356 |
#
|
357 |
|
358 |
|
359 |
def get_networks_from_ganeti(backend): |
360 |
prefix = settings.BACKEND_PREFIX_ID + 'net-'
|
361 |
|
362 |
networks = {} |
363 |
with pooled_rapi_client(backend) as c: |
364 |
for net in c.GetNetworks(bulk=True): |
365 |
if net['name'].startswith(prefix): |
366 |
id = utils.id_from_network_name(net['name'])
|
367 |
networks[id] = net
|
368 |
|
369 |
return networks
|
370 |
|
371 |
|
372 |
def hanging_networks(backend, GNets): |
373 |
"""Get networks that are not connected to all Nodegroups.
|
374 |
|
375 |
"""
|
376 |
def get_network_groups(group_list): |
377 |
groups = set()
|
378 |
for (name, mode, link) in group_list: |
379 |
groups.add(name) |
380 |
return groups
|
381 |
|
382 |
with pooled_rapi_client(backend) as c: |
383 |
groups = set(c.GetGroups())
|
384 |
|
385 |
hanging = {} |
386 |
for id, info in GNets.items(): |
387 |
group_list = get_network_groups(info['group_list'])
|
388 |
if group_list != groups:
|
389 |
hanging[id] = groups - group_list
|
390 |
return hanging
|
391 |
|
392 |
|
393 |
def get_online_backends(): |
394 |
return Backend.objects.filter(offline=False) |
395 |
|
396 |
|
397 |
def get_database_servers(backend): |
398 |
servers = backend.virtual_machines.select_related("nics", "flavor")\ |
399 |
.filter(deleted=False)
|
400 |
return dict([(s.id, s) for s in servers]) |
401 |
|
402 |
|
403 |
def get_ganeti_servers(backend): |
404 |
gnt_instances = backend_mod.get_instances(backend) |
405 |
# Filter out non-synnefo instances
|
406 |
snf_backend_prefix = settings.BACKEND_PREFIX_ID |
407 |
gnt_instances = filter(lambda i: i["name"].startswith(snf_backend_prefix), |
408 |
gnt_instances) |
409 |
gnt_instances = map(parse_gnt_instance, gnt_instances)
|
410 |
return dict([(i["id"], i) for i in gnt_instances if i["id"] is not None]) |
411 |
|
412 |
|
413 |
def parse_gnt_instance(instance): |
414 |
try:
|
415 |
instance_id = utils.id_from_instance_name(instance['name'])
|
416 |
except Exception: |
417 |
logger.error("Ignoring instance with malformed name %s",
|
418 |
instance['name'])
|
419 |
return (None, None) |
420 |
|
421 |
beparams = instance["beparams"]
|
422 |
|
423 |
vcpus = beparams["vcpus"]
|
424 |
ram = beparams["maxmem"]
|
425 |
state = instance["oper_state"] and "STARTED" or "STOPPED" |
426 |
|
427 |
return {
|
428 |
"id": instance_id,
|
429 |
"state": state, # FIX |
430 |
"updated": datetime.fromtimestamp(instance["mtime"]), |
431 |
"disks": disks_from_instance(instance),
|
432 |
"nics": nics_from_instance(instance),
|
433 |
"flavor": {"vcpus": vcpus, |
434 |
"ram": ram},
|
435 |
"tags": instance["tags"] |
436 |
} |
437 |
|
438 |
|
439 |
def nics_from_instance(i): |
440 |
ips = zip(itertools.repeat('ip'), i['nic.ips']) |
441 |
names = zip(itertools.repeat('name'), i['nic.names']) |
442 |
macs = zip(itertools.repeat('mac'), i['nic.macs']) |
443 |
networks = zip(itertools.repeat('network'), i['nic.networks.names']) |
444 |
# modes = zip(itertools.repeat('mode'), i['nic.modes'])
|
445 |
# links = zip(itertools.repeat('link'), i['nic.links'])
|
446 |
# nics = zip(ips,macs,modes,networks,links)
|
447 |
nics = zip(ips, names, macs, networks)
|
448 |
nics = map(lambda x: dict(x), nics) |
449 |
#nics = dict(enumerate(nics))
|
450 |
tags = i["tags"]
|
451 |
for tag in tags: |
452 |
t = tag.split(":")
|
453 |
if t[0:2] == ["synnefo", "network"]: |
454 |
if len(t) != 4: |
455 |
logger.error("Malformed synefo tag %s", tag)
|
456 |
continue
|
457 |
nic_name = t[2]
|
458 |
firewall = t[3]
|
459 |
[nic.setdefault("firewall", firewall)
|
460 |
for nic in nics if nic["name"] == nic_name] |
461 |
return nics
|
462 |
|
463 |
|
464 |
def get_ganeti_jobs(backend): |
465 |
gnt_jobs = backend_mod.get_jobs(backend) |
466 |
return dict([(int(j["id"]), j) for j in gnt_jobs]) |
467 |
|
468 |
|
469 |
def disks_from_instance(i): |
470 |
return dict([(index, {"size": size}) |
471 |
for index, size in enumerate(i["disk.sizes"])]) |
472 |
|
473 |
|
474 |
class NetworkReconciler(object): |
475 |
def __init__(self, logger, fix=False): |
476 |
self.log = logger
|
477 |
self.fix = fix
|
478 |
|
479 |
@transaction.commit_on_success
|
480 |
def reconcile_networks(self): |
481 |
# Get models from DB
|
482 |
self.backends = Backend.objects.exclude(offline=True) |
483 |
self.networks = Network.objects.filter(deleted=False) |
484 |
|
485 |
self.event_time = datetime.now()
|
486 |
|
487 |
# Get info from all ganeti backends
|
488 |
self.ganeti_networks = {}
|
489 |
self.ganeti_hanging_networks = {}
|
490 |
for b in self.backends: |
491 |
g_nets = get_networks_from_ganeti(b) |
492 |
self.ganeti_networks[b] = g_nets
|
493 |
g_hanging_nets = hanging_networks(b, g_nets) |
494 |
self.ganeti_hanging_networks[b] = g_hanging_nets
|
495 |
|
496 |
self._reconcile_orphan_networks()
|
497 |
|
498 |
for network in self.networks: |
499 |
self._reconcile_network(network)
|
500 |
|
501 |
@transaction.commit_on_success
|
502 |
def _reconcile_network(self, network): |
503 |
"""Reconcile a network with corresponging Ganeti networks.
|
504 |
|
505 |
Reconcile a Network and the associated BackendNetworks with the
|
506 |
corresponding Ganeti networks in all Ganeti backends.
|
507 |
|
508 |
"""
|
509 |
network_ip_pool = network.get_pool() # X-Lock on IP Pool
|
510 |
for bend in self.backends: |
511 |
bnet = get_backend_network(network, bend) |
512 |
gnet = self.ganeti_networks[bend].get(network.id)
|
513 |
if not bnet: |
514 |
if network.floating_ip_pool:
|
515 |
# Network is a floating IP pool and does not exist in
|
516 |
# backend. We need to create it
|
517 |
bnet = self.reconcile_parted_network(network, bend)
|
518 |
elif not gnet: |
519 |
# Network does not exist either in Ganeti nor in BD.
|
520 |
continue
|
521 |
else:
|
522 |
# Network exists in Ganeti and not in DB.
|
523 |
if network.action != "DESTROY" and not network.public: |
524 |
bnet = self.reconcile_parted_network(network, bend)
|
525 |
else:
|
526 |
continue
|
527 |
|
528 |
if not gnet: |
529 |
# Network does not exist in Ganeti. If the network action
|
530 |
# is DESTROY, we have to mark as deleted in DB, else we
|
531 |
# have to create it in Ganeti.
|
532 |
if network.action == "DESTROY": |
533 |
if bnet.operstate != "DELETED": |
534 |
self.reconcile_stale_network(bnet)
|
535 |
else:
|
536 |
self.reconcile_missing_network(network, bend)
|
537 |
# Skip rest reconciliation!
|
538 |
continue
|
539 |
|
540 |
try:
|
541 |
hanging_groups = self.ganeti_hanging_networks[bend][network.id]
|
542 |
except KeyError: |
543 |
# Network is connected to all nodegroups
|
544 |
hanging_groups = [] |
545 |
|
546 |
if hanging_groups:
|
547 |
# CASE-3: Ganeti networks not connected to all nodegroups
|
548 |
self.reconcile_hanging_groups(network, bend,
|
549 |
hanging_groups) |
550 |
continue
|
551 |
|
552 |
if bnet.operstate != 'ACTIVE': |
553 |
# CASE-4: Unsynced network state. At this point the network
|
554 |
# exists and is connected to all nodes so is must be
|
555 |
# active!
|
556 |
self.reconcile_unsynced_network(network, bend, bnet)
|
557 |
|
558 |
# Check that externally reserved IPs of the network in Ganeti are
|
559 |
# also externally reserved to the IP pool
|
560 |
externally_reserved = gnet['external_reservations']
|
561 |
if externally_reserved:
|
562 |
for ip in externally_reserved.split(","): |
563 |
ip = ip.strip() |
564 |
if not network_ip_pool.is_reserved(ip): |
565 |
msg = ("D: IP '%s' is reserved for network '%s' in"
|
566 |
" backend '%s' but not in DB.")
|
567 |
self.log.info(msg, ip, network, bend)
|
568 |
if self.fix: |
569 |
network_ip_pool.reserve(ip, external=True)
|
570 |
network_ip_pool.save() |
571 |
self.log.info("F: Reserved IP '%s'", ip) |
572 |
|
573 |
def reconcile_parted_network(self, network, backend): |
574 |
self.log.info("D: Missing DB entry for network %s in backend %s", |
575 |
network, backend) |
576 |
if self.fix: |
577 |
network.create_backend_network(backend) |
578 |
self.log.info("F: Created DB entry") |
579 |
bnet = get_backend_network(network, backend) |
580 |
return bnet
|
581 |
|
582 |
def reconcile_stale_network(self, backend_network): |
583 |
self.log.info("D: Stale DB entry for network %s in backend %s", |
584 |
backend_network.network, backend_network.backend) |
585 |
if self.fix: |
586 |
backend_mod.process_network_status( |
587 |
backend_network, self.event_time, 0, |
588 |
"OP_NETWORK_REMOVE",
|
589 |
"success",
|
590 |
"Reconciliation simulated event")
|
591 |
self.log.info("F: Reconciled event: OP_NETWORK_REMOVE") |
592 |
|
593 |
def reconcile_missing_network(self, network, backend): |
594 |
self.log.info("D: Missing Ganeti network %s in backend %s", |
595 |
network, backend) |
596 |
if self.fix: |
597 |
backend_mod.create_network(network, backend) |
598 |
self.log.info("F: Issued OP_NETWORK_CONNECT") |
599 |
|
600 |
def reconcile_hanging_groups(self, network, backend, hanging_groups): |
601 |
self.log.info('D: Network %s in backend %s is not connected to ' |
602 |
'the following groups:', network, backend)
|
603 |
self.log.info('- ' + '\n- '.join(hanging_groups)) |
604 |
if self.fix: |
605 |
for group in hanging_groups: |
606 |
self.log.info('F: Connecting network %s to nodegroup %s', |
607 |
network, group) |
608 |
backend_mod.connect_network(network, backend, depends=[], |
609 |
group=group) |
610 |
|
611 |
def reconcile_unsynced_network(self, network, backend, backend_network): |
612 |
self.log.info("D: Unsynced network %s in backend %s", network, backend) |
613 |
if self.fix: |
614 |
self.log.info("F: Issuing OP_NETWORK_CONNECT") |
615 |
backend_mod.process_network_status( |
616 |
backend_network, self.event_time, 0, |
617 |
"OP_NETWORK_CONNECT",
|
618 |
"success",
|
619 |
"Reconciliation simulated eventd")
|
620 |
|
621 |
def _reconcile_orphan_networks(self): |
622 |
db_networks = self.networks
|
623 |
ganeti_networks = self.ganeti_networks
|
624 |
# Detect Orphan Networks in Ganeti
|
625 |
db_network_ids = set([net.id for net in db_networks]) |
626 |
for back_end, ganeti_networks in ganeti_networks.items(): |
627 |
ganeti_network_ids = set(ganeti_networks.keys())
|
628 |
orphans = ganeti_network_ids - db_network_ids |
629 |
|
630 |
if len(orphans) > 0: |
631 |
self.log.info('D: Orphan Networks in backend %s:', |
632 |
back_end.clustername) |
633 |
self.log.info('- ' + '\n- '.join([str(o) for o in orphans])) |
634 |
if self.fix: |
635 |
for net_id in orphans: |
636 |
self.log.info('Disconnecting and deleting network %d', |
637 |
net_id) |
638 |
try:
|
639 |
network = Network.objects.get(id=net_id) |
640 |
backend_mod.delete_network(network, |
641 |
backend=back_end) |
642 |
except Network.DoesNotExist:
|
643 |
self.log.info("Not entry for network %s in DB !!", |
644 |
net_id) |
645 |
|
646 |
|
647 |
def get_backend_network(network, backend): |
648 |
try:
|
649 |
return BackendNetwork.objects.get(network=network, backend=backend)
|
650 |
except BackendNetwork.DoesNotExist:
|
651 |
return None |
652 |
|
653 |
|
654 |
class PoolReconciler(object): |
655 |
def __init__(self, logger, fix=False): |
656 |
self.log = logger
|
657 |
self.fix = fix
|
658 |
|
659 |
def reconcile(self): |
660 |
self.reconcile_bridges()
|
661 |
self.reconcile_mac_prefixes()
|
662 |
for network in Network.objects.filter(deleted=False): |
663 |
self.reconcile_ip_pool(network)
|
664 |
|
665 |
@transaction.commit_on_success
|
666 |
def reconcile_bridges(self): |
667 |
networks = Network.objects.filter(deleted=False,
|
668 |
flavor="PHYSICAL_VLAN")
|
669 |
check_unique_values(objects=networks, field='link', logger=self.log) |
670 |
try:
|
671 |
pool = BridgePoolTable.get_pool() |
672 |
except pools.EmptyPool:
|
673 |
self.log.info("There is no available pool for bridges.") |
674 |
return
|
675 |
|
676 |
used_bridges = set(networks.values_list('link', flat=True)) |
677 |
check_pool_consistent(pool=pool, pool_class=pools.BridgePool, |
678 |
used_values=used_bridges, fix=self.fix,
|
679 |
logger=self.log)
|
680 |
|
681 |
@transaction.commit_on_success
|
682 |
def reconcile_mac_prefixes(self): |
683 |
networks = Network.objects.filter(deleted=False, flavor="MAC_FILTERED") |
684 |
check_unique_values(objects=networks, field='mac_prefix',
|
685 |
logger=self.log)
|
686 |
try:
|
687 |
pool = MacPrefixPoolTable.get_pool() |
688 |
except pools.EmptyPool:
|
689 |
self.log.info("There is no available pool for MAC prefixes.") |
690 |
return
|
691 |
|
692 |
used_mac_prefixes = set(networks.values_list('mac_prefix', flat=True)) |
693 |
check_pool_consistent(pool=pool, pool_class=pools.MacPrefixPool, |
694 |
used_values=used_mac_prefixes, fix=self.fix,
|
695 |
logger=self.log)
|
696 |
|
697 |
@transaction.commit_on_success
|
698 |
def reconcile_ip_pool(self, network): |
699 |
# Check that all NICs have unique IPv4 address
|
700 |
nics = network.nics.filter(ipv4__isnull=False)
|
701 |
check_unique_values(objects=nics, field='ipv4', logger=self.log) |
702 |
|
703 |
# Check that all Floating IPs have unique IPv4 address
|
704 |
floating_ips = network.floating_ips.filter(deleted=False)
|
705 |
check_unique_values(objects=floating_ips, field='ipv4',
|
706 |
logger=self.log)
|
707 |
|
708 |
# First get(lock) the IP pool of the network to prevent new NICs
|
709 |
# from being created.
|
710 |
network_ip_pool = network.get_pool() |
711 |
used_ips = set(list(nics.values_list("ipv4", flat=True)) + |
712 |
list(floating_ips.values_list("ipv4", flat=True))) |
713 |
|
714 |
check_pool_consistent(pool=network_ip_pool, |
715 |
pool_class=pools.IPPool, |
716 |
used_values=used_ips, |
717 |
fix=self.fix, logger=self.log) |
718 |
|
719 |
|
720 |
def check_unique_values(objects, field, logger): |
721 |
used_values = list(objects.values_list(field, flat=True)) |
722 |
if len(used_values) != len(set(used_values)): |
723 |
duplicate_values = [v for v in used_values if used_values.count(v) > 1] |
724 |
for value in duplicate_values: |
725 |
filter_args = {field: value} |
726 |
using_objects = objects.filter(**filter_args) |
727 |
msg = "Value '%s' is used as %s for more than one objects: %s"
|
728 |
logger.error(msg, value, field, ",".join(map(str, using_objects))) |
729 |
return False |
730 |
logger.debug("Values for field '%s' are unique.", field)
|
731 |
return True |
732 |
|
733 |
|
734 |
def check_pool_consistent(pool, pool_class, used_values, fix, logger): |
735 |
dummy_pool = create_empty_pool(pool, pool_class) |
736 |
[dummy_pool.reserve(value) for value in used_values] |
737 |
if dummy_pool.available != pool.available:
|
738 |
msg = "'%s' is not consistent!\nPool: %s\nUsed: %s"
|
739 |
pool_diff = dummy_pool.available ^ pool.available |
740 |
for index in pool_diff.itersearch(bitarray.bitarray("1")): |
741 |
value = pool.index_to_value(int(index))
|
742 |
msg = "%s is incosistent! Value '%s' is %s but should be %s."
|
743 |
value1 = pool.is_available(value) and "available" or "unavailable" |
744 |
value2 = dummy_pool.is_available(value) and "available"\ |
745 |
or "unavailable" |
746 |
logger.error(msg, pool, value, value1, value2) |
747 |
if fix:
|
748 |
pool.available = dummy_pool.available |
749 |
pool.save() |
750 |
logger.info("Fixed available map of pool '%s'", pool)
|
751 |
|
752 |
|
753 |
def create_empty_pool(pool, pool_class): |
754 |
pool_row = pool.pool_table |
755 |
pool_row.available_map = ""
|
756 |
pool_row.reserved_map = ""
|
757 |
return pool_class(pool_row)
|