mirror of
https://github.com/ceph/ceph
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428 lines
16 KiB
Python
428 lines
16 KiB
Python
"""
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rgw multisite configuration routines
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"""
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import argparse
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import contextlib
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import logging
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import random
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import string
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from copy import deepcopy
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from util.rgw import rgwadmin, wait_for_radosgw
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from util.rados import create_ec_pool, create_replicated_pool
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from rgw_multi import multisite
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from rgw_multi.zone_rados import RadosZone as RadosZone
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from teuthology.orchestra import run
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from teuthology import misc
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from teuthology.exceptions import ConfigError
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from teuthology.task import Task
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log = logging.getLogger(__name__)
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class RGWMultisite(Task):
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"""
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Performs rgw multisite configuration to match the given realm definition.
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- rgw-multisite:
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realm:
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name: test-realm
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is_default: true
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List one or more zonegroup definitions. These are provided as json
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input to `radosgw-admin zonegroup set`, with the exception of these keys:
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* 'is_master' is passed on the command line as --master
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* 'is_default' is passed on the command line as --default
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* 'endpoints' given as client names are replaced with actual endpoints
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zonegroups:
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- name: test-zonegroup
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api_name: test-api
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is_master: true
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is_default: true
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endpoints: [c1.client.0]
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List each of the zones to be created in this zonegroup.
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zones:
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- name: test-zone1
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is_master: true
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is_default: true
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endpoints: [c1.client.0]
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- name: test-zone2
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is_default: true
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endpoints: [c2.client.0]
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A complete example:
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tasks:
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- install:
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- ceph: {cluster: c1}
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- ceph: {cluster: c2}
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- rgw:
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c1.client.0:
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c2.client.0:
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- rgw-multisite:
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realm:
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name: test-realm
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is_default: true
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zonegroups:
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- name: test-zonegroup
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is_master: true
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is_default: true
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zones:
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- name: test-zone1
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is_master: true
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is_default: true
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endpoints: [c1.client.0]
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- name: test-zone2
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is_default: true
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endpoints: [c2.client.0]
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"""
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def __init__(self, ctx, config):
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super(RGWMultisite, self).__init__(ctx, config)
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def setup(self):
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super(RGWMultisite, self).setup()
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overrides = self.ctx.config.get('overrides', {})
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misc.deep_merge(self.config, overrides.get('rgw-multisite', {}))
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if not self.ctx.rgw:
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raise ConfigError('rgw-multisite must run after the rgw task')
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role_endpoints = self.ctx.rgw.role_endpoints
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# construct Clusters and Gateways for each client in the rgw task
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clusters, gateways = extract_clusters_and_gateways(self.ctx,
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role_endpoints)
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# get the master zone and zonegroup configuration
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mz, mzg = extract_master_zone_zonegroup(self.config['zonegroups'])
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cluster1 = cluster_for_zone(clusters, mz)
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# create the realm and period on the master zone's cluster
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log.info('creating realm..')
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realm = create_realm(cluster1, self.config['realm'])
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period = realm.current_period
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creds = gen_credentials()
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# create the master zonegroup and its master zone
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log.info('creating master zonegroup..')
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master_zonegroup = create_zonegroup(cluster1, gateways, period,
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deepcopy(mzg))
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period.master_zonegroup = master_zonegroup
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log.info('creating master zone..')
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master_zone = create_zone(self.ctx, cluster1, gateways, creds,
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master_zonegroup, deepcopy(mz))
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master_zonegroup.master_zone = master_zone
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period.update(master_zone, commit=True)
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restart_zone_gateways(master_zone) # restart with --rgw-zone
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# create the admin user on the master zone
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log.info('creating admin user..')
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user_args = ['--display-name', 'Realm Admin', '--system']
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user_args += creds.credential_args()
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admin_user = multisite.User('realm-admin')
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admin_user.create(master_zone, user_args)
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# process 'zonegroups'
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for zg_config in self.config['zonegroups']:
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zones_config = zg_config.pop('zones')
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zonegroup = None
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for zone_config in zones_config:
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# get the cluster for this zone
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cluster = cluster_for_zone(clusters, zone_config)
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if cluster != cluster1: # already created on master cluster
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log.info('pulling realm configuration to %s', cluster.name)
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realm.pull(cluster, master_zone.gateways[0], creds)
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# use the first zone's cluster to create the zonegroup
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if not zonegroup:
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if zg_config['name'] == master_zonegroup.name:
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zonegroup = master_zonegroup
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else:
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log.info('creating zonegroup..')
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zonegroup = create_zonegroup(cluster, gateways,
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period, zg_config)
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if zone_config['name'] == master_zone.name:
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# master zone was already created
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zone = master_zone
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else:
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# create the zone and commit the period
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log.info('creating zone..')
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zone = create_zone(self.ctx, cluster, gateways, creds,
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zonegroup, zone_config)
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period.update(zone, commit=True)
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restart_zone_gateways(zone) # restart with --rgw-zone
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# attach configuration to the ctx for other tasks
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self.ctx.rgw_multisite = argparse.Namespace()
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self.ctx.rgw_multisite.clusters = clusters
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self.ctx.rgw_multisite.gateways = gateways
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self.ctx.rgw_multisite.realm = realm
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self.ctx.rgw_multisite.admin_user = admin_user
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log.info('rgw multisite configuration completed')
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def end(self):
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del self.ctx.rgw_multisite
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class Cluster(multisite.Cluster):
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""" Issues 'radosgw-admin' commands with the rgwadmin() helper """
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def __init__(self, ctx, name, client):
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super(Cluster, self).__init__()
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self.ctx = ctx
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self.name = name
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self.client = client
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def admin(self, args = None, **kwargs):
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""" radosgw-admin command """
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args = args or []
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args += ['--cluster', self.name]
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args += ['--debug-rgw', '0']
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if kwargs.pop('read_only', False):
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args += ['--rgw-cache-enabled', 'false']
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kwargs['decode'] = False
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check_retcode = kwargs.pop('check_retcode', True)
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r, s = rgwadmin(self.ctx, self.client, args, **kwargs)
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if check_retcode:
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assert r == 0
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return s, r
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class Gateway(multisite.Gateway):
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""" Controls a radosgw instance using its daemon """
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def __init__(self, role, remote, daemon, *args, **kwargs):
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super(Gateway, self).__init__(*args, **kwargs)
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self.role = role
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self.remote = remote
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self.daemon = daemon
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def set_zone(self, zone):
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""" set the zone and add its args to the daemon's command line """
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assert self.zone is None, 'zone can only be set once'
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self.zone = zone
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# daemon.restart_with_args() would be perfect for this, except that
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# radosgw args likely include a pipe and redirect. zone arguments at
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# the end won't actually apply to radosgw
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args = self.daemon.command_kwargs.get('args', [])
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try:
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# insert zone args before the first |
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pipe = args.index(run.Raw('|'))
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args = args[0:pipe] + zone.zone_args() + args[pipe:]
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except ValueError, e:
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args += zone.zone_args()
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self.daemon.command_kwargs['args'] = args
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def start(self, args = None):
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""" (re)start the daemon """
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self.daemon.restart()
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# wait until startup completes
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wait_for_radosgw(self.endpoint())
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def stop(self):
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""" stop the daemon """
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self.daemon.stop()
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def extract_clusters_and_gateways(ctx, role_endpoints):
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""" create cluster and gateway instances for all of the radosgw roles """
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clusters = {}
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gateways = {}
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for role, (host, port) in role_endpoints.iteritems():
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cluster_name, daemon_type, client_id = misc.split_role(role)
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# find or create the cluster by name
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cluster = clusters.get(cluster_name)
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if not cluster:
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clusters[cluster_name] = cluster = Cluster(ctx, cluster_name, role)
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# create a gateway for this daemon
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client_with_id = daemon_type + '.' + client_id # match format from rgw.py
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daemon = ctx.daemons.get_daemon('rgw', client_with_id, cluster_name)
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if not daemon:
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raise ConfigError('no daemon for role=%s cluster=%s type=rgw id=%s' % \
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(role, cluster_name, client_id))
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(remote,) = ctx.cluster.only(role).remotes.keys()
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gateways[role] = Gateway(role, remote, daemon, host, port, cluster)
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return clusters, gateways
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def create_realm(cluster, config):
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""" create a realm from configuration and initialize its first period """
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realm = multisite.Realm(config['name'])
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args = []
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if config.get('is_default', False):
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args += ['--default']
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realm.create(cluster, args)
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realm.current_period = multisite.Period(realm)
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return realm
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def extract_user_credentials(config):
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""" extract keys from configuration """
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return multisite.Credentials(config['access_key'], config['secret_key'])
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def extract_master_zone(zonegroup_config):
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""" find and return the master zone definition """
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master = None
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for zone in zonegroup_config['zones']:
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if not zone.get('is_master', False):
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continue
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if master:
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raise ConfigError('zones %s and %s cannot both set \'is_master\'' % \
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(master['name'], zone['name']))
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master = zone
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# continue the loop so we can detect duplicates
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if not master:
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raise ConfigError('one zone must set \'is_master\' in zonegroup %s' % \
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zonegroup_config['name'])
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return master
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def extract_master_zone_zonegroup(zonegroups_config):
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""" find and return the master zone and zonegroup definitions """
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master_zone, master_zonegroup = (None, None)
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for zonegroup in zonegroups_config:
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# verify that all zonegroups have a master zone set, even if they
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# aren't in the master zonegroup
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zone = extract_master_zone(zonegroup)
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if not zonegroup.get('is_master', False):
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continue
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if master_zonegroup:
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raise ConfigError('zonegroups %s and %s cannot both set \'is_master\'' % \
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(master_zonegroup['name'], zonegroup['name']))
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master_zonegroup = zonegroup
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master_zone = zone
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# continue the loop so we can detect duplicates
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if not master_zonegroup:
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raise ConfigError('one zonegroup must set \'is_master\'')
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return master_zone, master_zonegroup
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def extract_zone_cluster_name(zone_config):
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""" return the cluster (must be common to all zone endpoints) """
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cluster_name = None
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endpoints = zone_config.get('endpoints')
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if not endpoints:
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raise ConfigError('zone %s missing \'endpoints\' list' % \
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zone_config['name'])
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for role in endpoints:
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name, _, _ = misc.split_role(role)
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if not cluster_name:
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cluster_name = name
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elif cluster_name != name:
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raise ConfigError('all zone %s endpoints must be in the same cluster' % \
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zone_config['name'])
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return cluster_name
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def cluster_for_zone(clusters, zone_config):
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""" return the cluster entry for the given zone """
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name = extract_zone_cluster_name(zone_config)
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try:
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return clusters[name]
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except KeyError:
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raise ConfigError('no cluster %s found' % name)
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def gen_access_key():
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return ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(16))
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def gen_secret():
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return ''.join(random.choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(32))
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def gen_credentials():
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return multisite.Credentials(gen_access_key(), gen_secret())
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def extract_gateway_endpoints(gateways, endpoints_config):
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""" return a list of gateway endpoints associated with the given roles """
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endpoints = []
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for role in endpoints_config:
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try:
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# replace role names with their gateway's endpoint
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endpoints.append(gateways[role].endpoint())
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except KeyError:
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raise ConfigError('no radosgw endpoint found for role %s' % role)
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return endpoints
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def is_default_arg(config):
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return ['--default'] if config.pop('is_default', False) else []
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def is_master_arg(config):
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return ['--master'] if config.pop('is_master', False) else []
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def create_zonegroup(cluster, gateways, period, config):
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""" pass the zonegroup configuration to `zonegroup set` """
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config.pop('zones', None) # remove 'zones' from input to `zonegroup set`
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endpoints = config.get('endpoints')
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if endpoints:
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# replace client names with their gateway endpoints
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config['endpoints'] = extract_gateway_endpoints(gateways, endpoints)
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zonegroup = multisite.ZoneGroup(config['name'], period)
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# `zonegroup set` needs --default on command line, and 'is_master' in json
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args = is_default_arg(config)
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zonegroup.set(cluster, config, args)
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period.zonegroups.append(zonegroup)
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return zonegroup
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def create_zone(ctx, cluster, gateways, creds, zonegroup, config):
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""" create a zone with the given configuration """
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zone = multisite.Zone(config['name'], zonegroup, cluster)
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zone = RadosZone(config['name'], zonegroup, cluster)
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# collect Gateways for the zone's endpoints
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endpoints = config.get('endpoints')
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if not endpoints:
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raise ConfigError('no \'endpoints\' for zone %s' % config['name'])
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zone.gateways = [gateways[role] for role in endpoints]
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for gateway in zone.gateways:
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gateway.set_zone(zone)
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# format the gateway endpoints
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endpoints = [g.endpoint() for g in zone.gateways]
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args = is_default_arg(config)
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args += is_master_arg(config)
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args += creds.credential_args()
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if len(endpoints):
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args += ['--endpoints', ','.join(endpoints)]
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zone.create(cluster, args)
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zonegroup.zones.append(zone)
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create_zone_pools(ctx, zone)
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if ctx.rgw.compression_type:
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configure_zone_compression(zone, ctx.rgw.compression_type)
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zonegroup.zones_by_type.setdefault(zone.tier_type(), []).append(zone)
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if zone.is_read_only():
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zonegroup.ro_zones.append(zone)
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else:
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zonegroup.rw_zones.append(zone)
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return zone
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def create_zone_pools(ctx, zone):
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""" Create the data_pool for each placement type """
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gateway = zone.gateways[0]
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cluster = zone.cluster
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for pool_config in zone.data.get('placement_pools', []):
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pool_name = pool_config['val']['data_pool']
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if ctx.rgw.ec_data_pool:
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create_ec_pool(gateway.remote, pool_name, zone.name, 64,
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ctx.rgw.erasure_code_profile, cluster.name, 'rgw')
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else:
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create_replicated_pool(gateway.remote, pool_name, 64, cluster.name, 'rgw')
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def configure_zone_compression(zone, compression):
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""" Set compression type in the zone's default-placement """
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zone.json_command(zone.cluster, 'placement', ['modify',
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'--placement-id', 'default-placement',
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'--compression', compression
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])
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def restart_zone_gateways(zone):
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zone.stop()
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zone.start()
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task = RGWMultisite
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