ceph/qa/tasks/rgw_multisite.py

   1 """
   2 rgw multisite configuration routines
   3 """
   4 import argparse
   5 import contextlib
   6 import logging
   7 import random
   8 import string
   9 from copy import deepcopy
  10 from util.rgw import rgwadmin, wait_for_radosgw
  11 from util.rados import create_ec_pool, create_replicated_pool
  12 from rgw_multi import multisite
  13 from rgw_multi.zone_rados import RadosZone as RadosZone
  14
  15 from teuthology.orchestra import run
  16 from teuthology import misc
  17 from teuthology.exceptions import ConfigError
  18 from teuthology.task import Task
  19
  20 log = logging.getLogger(__name__)
  21
  22 class RGWMultisite(Task):
  23     """
  24     Performs rgw multisite configuration to match the given realm definition.
  25
  26         - rgw-multisite:
  27             realm:
  28               name: test-realm
  29               is_default: true
  30
  31     List one or more zonegroup definitions. These are provided as json
  32     input to `radosgw-admin zonegroup set`, with the exception of these keys:
  33
  34     * 'is_master' is passed on the command line as --master
  35     * 'is_default' is passed on the command line as --default
  36     * 'endpoints' given as client names are replaced with actual endpoints
  37
  38             zonegroups:
  39               - name: test-zonegroup
  40                 api_name: test-api
  41                 is_master: true
  42                 is_default: true
  43                 endpoints: [c1.client.0]
  44
  45     List each of the zones to be created in this zonegroup.
  46
  47                 zones:
  48                   - name: test-zone1
  49                     is_master: true
  50                     is_default: true
  51                     endpoints: [c1.client.0]
  52                   - name: test-zone2
  53                     is_default: true
  54                     endpoints: [c2.client.0]
  55
  56     A complete example:
  57
  58         tasks:
  59         - install:
  60         - ceph: {cluster: c1}
  61         - ceph: {cluster: c2}
  62         - rgw:
  63             c1.client.0:
  64             c2.client.0:
  65         - rgw-multisite:
  66             realm:
  67               name: test-realm
  68               is_default: true
  69             zonegroups:
  70               - name: test-zonegroup
  71                 is_master: true
  72                 is_default: true
  73                 zones:
  74                   - name: test-zone1
  75                     is_master: true
  76                     is_default: true
  77                     endpoints: [c1.client.0]
  78                   - name: test-zone2
  79                     is_default: true
  80                     endpoints: [c2.client.0]
  81
  82     """
  83     def __init__(self, ctx, config):
  84         super(RGWMultisite, self).__init__(ctx, config)
  85
  86     def setup(self):
  87         super(RGWMultisite, self).setup()
  88
  89         overrides = self.ctx.config.get('overrides', {})
  90         misc.deep_merge(self.config, overrides.get('rgw-multisite', {}))
  91
  92         if not self.ctx.rgw:
  93             raise ConfigError('rgw-multisite must run after the rgw task')
  94         role_endpoints = self.ctx.rgw.role_endpoints
  95
  96         # construct Clusters and Gateways for each client in the rgw task
  97         clusters, gateways = extract_clusters_and_gateways(self.ctx,
  98                                                            role_endpoints)
  99
 100         # get the master zone and zonegroup configuration
 101         mz, mzg = extract_master_zone_zonegroup(self.config['zonegroups'])
 102         cluster1 = cluster_for_zone(clusters, mz)
 103
 104         # create the realm and period on the master zone's cluster
 105         log.info('creating realm..')
 106         realm = create_realm(cluster1, self.config['realm'])
 107         period = realm.current_period
 108
 109         creds = gen_credentials()
 110
 111         # create the master zonegroup and its master zone
 112         log.info('creating master zonegroup..')
 113         master_zonegroup = create_zonegroup(cluster1, gateways, period,
 114                                             deepcopy(mzg))
 115         period.master_zonegroup = master_zonegroup
 116
 117         log.info('creating master zone..')
 118         master_zone = create_zone(self.ctx, cluster1, gateways, creds,
 119                                   master_zonegroup, deepcopy(mz))
 120         master_zonegroup.master_zone = master_zone
 121
 122         period.update(master_zone, commit=True)
 123         restart_zone_gateways(master_zone) # restart with --rgw-zone
 124
 125         # create the admin user on the master zone
 126         log.info('creating admin user..')
 127         user_args = ['--display-name', 'Realm Admin', '--system']
 128         user_args += creds.credential_args()
 129         admin_user = multisite.User('realm-admin')
 130         admin_user.create(master_zone, user_args)
 131
 132         # process 'zonegroups'
 133         for zg_config in self.config['zonegroups']:
 134             zones_config = zg_config.pop('zones')
 135
 136             zonegroup = None
 137             for zone_config in zones_config:
 138                 # get the cluster for this zone
 139                 cluster = cluster_for_zone(clusters, zone_config)
 140
 141                 if cluster != cluster1: # already created on master cluster
 142                     log.info('pulling realm configuration to %s', cluster.name)
 143                     realm.pull(cluster, master_zone.gateways[0], creds)
 144
 145                 # use the first zone's cluster to create the zonegroup
 146                 if not zonegroup:
 147                     if zg_config['name'] == master_zonegroup.name:
 148                         zonegroup = master_zonegroup
 149                     else:
 150                         log.info('creating zonegroup..')
 151                         zonegroup = create_zonegroup(cluster, gateways,
 152                                                      period, zg_config)
 153
 154                 if zone_config['name'] == master_zone.name:
 155                     # master zone was already created
 156                     zone = master_zone
 157                 else:
 158                     # create the zone and commit the period
 159                     log.info('creating zone..')
 160                     zone = create_zone(self.ctx, cluster, gateways, creds,
 161                                        zonegroup, zone_config)
 162                     period.update(zone, commit=True)
 163
 164                     restart_zone_gateways(zone) # restart with --rgw-zone
 165
 166         # attach configuration to the ctx for other tasks
 167         self.ctx.rgw_multisite = argparse.Namespace()
 168         self.ctx.rgw_multisite.clusters = clusters
 169         self.ctx.rgw_multisite.gateways = gateways
 170         self.ctx.rgw_multisite.realm = realm
 171         self.ctx.rgw_multisite.admin_user = admin_user
 172
 173         log.info('rgw multisite configuration completed')
 174
 175     def end(self):
 176         del self.ctx.rgw_multisite
 177
 178 class Cluster(multisite.Cluster):
 179     """ Issues 'radosgw-admin' commands with the rgwadmin() helper """
 180     def __init__(self, ctx, name, client):
 181         super(Cluster, self).__init__()
 182         self.ctx = ctx
 183         self.name = name
 184         self.client = client
 185
 186     def admin(self, args = None, **kwargs):
 187         """ radosgw-admin command """
 188         args = args or []
 189         args += ['--cluster', self.name]
 190         args += ['--debug-rgw', '0']
 191         if kwargs.pop('read_only', False):
 192             args += ['--rgw-cache-enabled', 'false']
 193         kwargs['decode'] = False
 194         check_retcode = kwargs.pop('check_retcode', True)
 195         r, s = rgwadmin(self.ctx, self.client, args, **kwargs)
 196         if check_retcode:
 197             assert r == 0
 198         return s, r
 199
 200 class Gateway(multisite.Gateway):
 201     """ Controls a radosgw instance using its daemon """
 202     def __init__(self, role, remote, daemon, *args, **kwargs):
 203         super(Gateway, self).__init__(*args, **kwargs)
 204         self.role = role
 205         self.remote = remote
 206         self.daemon = daemon
 207
 208     def set_zone(self, zone):
 209         """ set the zone and add its args to the daemon's command line """
 210         assert self.zone is None, 'zone can only be set once'
 211         self.zone = zone
 212         # daemon.restart_with_args() would be perfect for this, except that
 213         # radosgw args likely include a pipe and redirect. zone arguments at
 214         # the end won't actually apply to radosgw
 215         args = self.daemon.command_kwargs.get('args', [])
 216         try:
 217             # insert zone args before the first |
 218             pipe = args.index(run.Raw('|'))
 219             args = args[0:pipe] + zone.zone_args() + args[pipe:]
 220         except ValueError, e:
 221             args += zone.zone_args()
 222         self.daemon.command_kwargs['args'] = args
 223
 224     def start(self, args = None):
 225         """ (re)start the daemon """
 226         self.daemon.restart()
 227         # wait until startup completes
 228         wait_for_radosgw(self.endpoint())
 229
 230     def stop(self):
 231         """ stop the daemon """
 232         self.daemon.stop()
 233
 234 def extract_clusters_and_gateways(ctx, role_endpoints):
 235     """ create cluster and gateway instances for all of the radosgw roles """
 236     clusters = {}
 237     gateways = {}
 238     for role, (host, port) in role_endpoints.iteritems():
 239         cluster_name, daemon_type, client_id = misc.split_role(role)
 240         # find or create the cluster by name
 241         cluster = clusters.get(cluster_name)
 242         if not cluster:
 243             clusters[cluster_name] = cluster = Cluster(ctx, cluster_name, role)
 244         # create a gateway for this daemon
 245         client_with_id = daemon_type + '.' + client_id # match format from rgw.py
 246         daemon = ctx.daemons.get_daemon('rgw', client_with_id, cluster_name)
 247         if not daemon:
 248             raise ConfigError('no daemon for role=%s cluster=%s type=rgw id=%s' % \
 249                               (role, cluster_name, client_id))
 250         (remote,) = ctx.cluster.only(role).remotes.keys()
 251         gateways[role] = Gateway(role, remote, daemon, host, port, cluster)
 252     return clusters, gateways
 253
 254 def create_realm(cluster, config):
 255     """ create a realm from configuration and initialize its first period """
 256     realm = multisite.Realm(config['name'])
 257     args = []
 258     if config.get('is_default', False):
 259         args += ['--default']
 260     realm.create(cluster, args)
 261     realm.current_period = multisite.Period(realm)
 262     return realm
 263
 264 def extract_user_credentials(config):
 265     """ extract keys from configuration """
 266     return multisite.Credentials(config['access_key'], config['secret_key'])
 267
 268 def extract_master_zone(zonegroup_config):
 269     """ find and return the master zone definition """
 270     master = None
 271     for zone in zonegroup_config['zones']:
 272         if not zone.get('is_master', False):
 273             continue
 274         if master:
 275             raise ConfigError('zones %s and %s cannot both set \'is_master\'' % \
 276                               (master['name'], zone['name']))
 277         master = zone
 278         # continue the loop so we can detect duplicates
 279     if not master:
 280         raise ConfigError('one zone must set \'is_master\' in zonegroup %s' % \
 281                           zonegroup_config['name'])
 282     return master
 283
 284 def extract_master_zone_zonegroup(zonegroups_config):
 285     """ find and return the master zone and zonegroup definitions """
 286     master_zone, master_zonegroup = (None, None)
 287     for zonegroup in zonegroups_config:
 288         # verify that all zonegroups have a master zone set, even if they
 289         # aren't in the master zonegroup
 290         zone = extract_master_zone(zonegroup)
 291         if not zonegroup.get('is_master', False):
 292             continue
 293         if master_zonegroup:
 294             raise ConfigError('zonegroups %s and %s cannot both set \'is_master\'' % \
 295                               (master_zonegroup['name'], zonegroup['name']))
 296         master_zonegroup = zonegroup
 297         master_zone = zone
 298         # continue the loop so we can detect duplicates
 299     if not master_zonegroup:
 300         raise ConfigError('one zonegroup must set \'is_master\'')
 301     return master_zone, master_zonegroup
 302
 303 def extract_zone_cluster_name(zone_config):
 304     """ return the cluster (must be common to all zone endpoints) """
 305     cluster_name = None
 306     endpoints = zone_config.get('endpoints')
 307     if not endpoints:
 308         raise ConfigError('zone %s missing \'endpoints\' list' % \
 309                           zone_config['name'])
 310     for role in endpoints:
 311         name, _, _ = misc.split_role(role)
 312         if not cluster_name:
 313             cluster_name = name
 314         elif cluster_name != name:
 315             raise ConfigError('all zone %s endpoints must be in the same cluster' % \
 316                               zone_config['name'])
 317     return cluster_name
 318
 319 def cluster_for_zone(clusters, zone_config):
 320     """ return the cluster entry for the given zone """
 321     name = extract_zone_cluster_name(zone_config)
 322     try:
 323         return clusters[name]
 324     except KeyError:
 325         raise ConfigError('no cluster %s found' % name)
 326
 327 def gen_access_key():
 328     return ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(16))
 329
 330 def gen_secret():
 331     return ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(32))
 332
 333 def gen_credentials():
 334     return multisite.Credentials(gen_access_key(), gen_secret())
 335
 336 def extract_gateway_endpoints(gateways, endpoints_config):
 337     """ return a list of gateway endpoints associated with the given roles """
 338     endpoints = []
 339     for role in endpoints_config:
 340         try:
 341             # replace role names with their gateway's endpoint
 342             endpoints.append(gateways[role].endpoint())
 343         except KeyError:
 344             raise ConfigError('no radosgw endpoint found for role %s' % role)
 345     return endpoints
 346
 347 def is_default_arg(config):
 348     return ['--default'] if config.pop('is_default', False) else []
 349
 350 def is_master_arg(config):
 351     return ['--master'] if config.pop('is_master', False) else []
 352
 353 def create_zonegroup(cluster, gateways, period, config):
 354     """ pass the zonegroup configuration to `zonegroup set` """
 355     config.pop('zones', None) # remove 'zones' from input to `zonegroup set`
 356     endpoints = config.get('endpoints')
 357     if endpoints:
 358         # replace client names with their gateway endpoints
 359         config['endpoints'] = extract_gateway_endpoints(gateways, endpoints)
 360     zonegroup = multisite.ZoneGroup(config['name'], period)
 361     # `zonegroup set` needs --default on command line, and 'is_master' in json
 362     args = is_default_arg(config)
 363     zonegroup.set(cluster, config, args)
 364     period.zonegroups.append(zonegroup)
 365     return zonegroup
 366
 367 def create_zone(ctx, cluster, gateways, creds, zonegroup, config):
 368     """ create a zone with the given configuration """
 369     zone = multisite.Zone(config['name'], zonegroup, cluster)
 370     zone = RadosZone(config['name'], zonegroup, cluster)
 371
 372     # collect Gateways for the zone's endpoints
 373     endpoints = config.get('endpoints')
 374     if not endpoints:
 375         raise ConfigError('no \'endpoints\' for zone %s' % config['name'])
 376     zone.gateways = [gateways[role] for role in endpoints]
 377     for gateway in zone.gateways:
 378         gateway.set_zone(zone)
 379
 380     # format the gateway endpoints
 381     endpoints = [g.endpoint() for g in zone.gateways]
 382
 383     args = is_default_arg(config)
 384     args += is_master_arg(config)
 385     args += creds.credential_args()
 386     if len(endpoints):
 387         args += ['--endpoints', ','.join(endpoints)]
 388     zone.create(cluster, args)
 389     zonegroup.zones.append(zone)
 390
 391     create_zone_pools(ctx, zone)
 392     if ctx.rgw.compression_type:
 393         configure_zone_compression(zone, ctx.rgw.compression_type)
 394
 395     zonegroup.zones_by_type.setdefault(zone.tier_type(), []).append(zone)
 396
 397     if zone.is_read_only():
 398         zonegroup.ro_zones.append(zone)
 399     else:
 400         zonegroup.rw_zones.append(zone)
 401
 402     return zone
 403
 404 def create_zone_pools(ctx, zone):
 405     """ Create the data_pool for each placement type """
 406     gateway = zone.gateways[0]
 407     cluster = zone.cluster
 408     for pool_config in zone.data.get('placement_pools', []):
 409         pool_name = pool_config['val']['data_pool']
 410         if ctx.rgw.ec_data_pool:
 411             create_ec_pool(gateway.remote, pool_name, zone.name, 64,
 412                            ctx.rgw.erasure_code_profile, cluster.name)
 413         else:
 414             create_replicated_pool(gateway.remote, pool_name, 64, cluster.name)
 415
 416 def configure_zone_compression(zone, compression):
 417     """ Set compression type in the zone's default-placement """
 418     zone.json_command(zone.cluster, 'placement', ['modify',
 419                           '--placement-id', 'default-placement',
 420                           '--compression', compression
 421                       ])
 422
 423 def restart_zone_gateways(zone):
 424     zone.stop()
 425     zone.start()
 426
 427 task = RGWMultisite