339 lines
13 KiB
Python
339 lines
13 KiB
Python
# Copyright (c) 2014 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import functools
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from oslo_log import log as logging
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import six
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from sahara import context
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from sahara.i18n import _
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from sahara.plugins.cdh.client import api_client
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from sahara.plugins.cdh.client import services
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from sahara.plugins.cdh import db_helper
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from sahara.plugins import exceptions as ex
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from sahara.utils import cluster_progress_ops as cpo
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from sahara.utils import poll_utils
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LOG = logging.getLogger(__name__)
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def cloudera_cmd(f):
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@functools.wraps(f)
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def wrapper(*args, **kwargs):
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for cmd in f(*args, **kwargs):
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result = cmd.wait()
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if not result.success:
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if result.children is not None:
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for c in result.children:
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if not c.success:
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raise ex.HadoopProvisionError(c.resultMessage)
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else:
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raise ex.HadoopProvisionError(result.resultMessage)
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return wrapper
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class ClouderaUtils(object):
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CM_DEFAULT_USERNAME = 'admin'
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CM_DEFAULT_PASSWD = 'admin'
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CM_API_VERSION = 6
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HDFS_SERVICE_NAME = 'hdfs01'
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YARN_SERVICE_NAME = 'yarn01'
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OOZIE_SERVICE_NAME = 'oozie01'
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HIVE_SERVICE_NAME = 'hive01'
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HUE_SERVICE_NAME = 'hue01'
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SPARK_SERVICE_NAME = 'spark_on_yarn01'
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ZOOKEEPER_SERVICE_NAME = 'zookeeper01'
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HBASE_SERVICE_NAME = 'hbase01'
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def __init__(self):
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# pu will be defined in derived class.
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self.pu = None
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def get_api_client_by_default_password(self, cluster):
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manager_ip = self.pu.get_manager(cluster).management_ip
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return api_client.ApiResource(manager_ip,
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username=self.CM_DEFAULT_USERNAME,
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password=self.CM_DEFAULT_PASSWD,
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version=self.CM_API_VERSION)
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def get_api_client(self, cluster):
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manager_ip = self.pu.get_manager(cluster).management_ip
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cm_password = db_helper.get_cm_password(cluster)
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return api_client.ApiResource(manager_ip,
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username=self.CM_DEFAULT_USERNAME,
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password=cm_password,
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version=self.CM_API_VERSION)
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def update_cloudera_password(self, cluster):
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api = self.get_api_client_by_default_password(cluster)
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user = api.get_user(self.CM_DEFAULT_USERNAME)
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user.password = db_helper.get_cm_password(cluster)
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api.update_user(user)
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def get_cloudera_cluster(self, cluster):
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api = self.get_api_client(cluster)
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return api.get_cluster(cluster.name)
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@cloudera_cmd
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def start_instances(self, cluster):
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cm_cluster = self.get_cloudera_cluster(cluster)
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yield cm_cluster.start()
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@cpo.event_wrapper(True, step=_("Delete instances"), param=('cluster', 1))
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def delete_instances(self, cluster, instances):
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api = self.get_api_client(cluster)
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cm_cluster = self.get_cloudera_cluster(cluster)
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hosts = api.get_all_hosts(view='full')
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hostsnames_to_deleted = [i.fqdn() for i in instances]
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for host in hosts:
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if host.hostname in hostsnames_to_deleted:
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cm_cluster.remove_host(host.hostId)
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api.delete_host(host.hostId)
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@cpo.event_wrapper(
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True, step=_("Decommission nodes"), param=('cluster', 1))
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def decommission_nodes(self, cluster, process,
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decommission_roles, roles_to_delete=None):
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service = self.get_service_by_role(process, cluster)
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service.decommission(*decommission_roles).wait()
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# not all roles should be decommissioned
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if roles_to_delete:
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decommission_roles.extend(roles_to_delete)
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for role_name in decommission_roles:
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service.delete_role(role_name)
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@cpo.event_wrapper(
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True, step=_("Refresh DataNodes"), param=('cluster', 1))
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def refresh_datanodes(self, cluster):
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self._refresh_nodes(cluster, 'DATANODE', self.HDFS_SERVICE_NAME)
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@cpo.event_wrapper(
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True, step=_("Refresh YARNNodes"), param=('cluster', 1))
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def refresh_yarn_nodes(self, cluster):
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self._refresh_nodes(cluster, 'NODEMANAGER', self.YARN_SERVICE_NAME)
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@cloudera_cmd
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def _refresh_nodes(self, cluster, process, service_name):
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cm_cluster = self.get_cloudera_cluster(cluster)
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service = cm_cluster.get_service(service_name)
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nds = [n.name for n in service.get_roles_by_type(process)]
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for nd in nds:
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for st in service.refresh(nd):
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yield st
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@cpo.event_wrapper(
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True, step=_("Restart stale services"), param=('cluster', 1))
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@cloudera_cmd
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def restart_stale_services(self, cluster):
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cm_cluster = self.get_cloudera_cluster(cluster)
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yield cm_cluster.restart(
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restart_only_stale_services=True,
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redeploy_client_configuration=True)
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@cpo.event_wrapper(True, step=_("Deploy configs"), param=('cluster', 1))
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@cloudera_cmd
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def deploy_configs(self, cluster):
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cm_cluster = self.get_cloudera_cluster(cluster)
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yield cm_cluster.deploy_client_config()
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def update_configs(self, instances):
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# instances non-empty
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cpo.add_provisioning_step(
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instances[0].cluster_id, _("Update configs"), len(instances))
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with context.ThreadGroup() as tg:
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for instance in instances:
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tg.spawn("update-configs-%s" % instance.instance_name,
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self._update_configs, instance)
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@cpo.event_wrapper(True)
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@cloudera_cmd
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def _update_configs(self, instance):
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for process in instance.node_group.node_processes:
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process = self.pu.convert_role_showname(process)
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service = self.get_service_by_role(process, instance=instance)
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yield service.deploy_client_config(self.pu.get_role_name(instance,
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process))
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@cloudera_cmd
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def restart_mgmt_service(self, cluster):
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api = self.get_api_client(cluster)
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cm = api.get_cloudera_manager()
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mgmt_service = cm.get_service()
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yield mgmt_service.restart()
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@cloudera_cmd
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def start_service(self, service):
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yield service.start()
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@cloudera_cmd
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def start_roles(self, service, *role_names):
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for role in service.start_roles(*role_names):
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yield role
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@cpo.event_wrapper(
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True, step=_("Create mgmt service"), param=('cluster', 1))
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def create_mgmt_service(self, cluster):
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api = self.get_api_client(cluster)
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cm = api.get_cloudera_manager()
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setup_info = services.ApiServiceSetupInfo()
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manager = self.pu.get_manager(cluster)
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hostname = manager.fqdn()
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processes = ['SERVICEMONITOR', 'HOSTMONITOR',
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'EVENTSERVER', 'ALERTPUBLISHER']
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for proc in processes:
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setup_info.add_role_info(self.pu.get_role_name(manager, proc),
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proc, hostname)
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cm.create_mgmt_service(setup_info)
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cm.hosts_start_roles([hostname])
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def get_service_by_role(self, role, cluster=None, instance=None):
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cm_cluster = None
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if cluster:
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cm_cluster = self.get_cloudera_cluster(cluster)
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elif instance:
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cm_cluster = self.get_cloudera_cluster(instance.cluster)
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else:
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raise ValueError(_("'cluster' or 'instance' argument missed"))
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if role in ['NAMENODE', 'DATANODE', 'SECONDARYNAMENODE',
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'HDFS_GATEWAY']:
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return cm_cluster.get_service(self.HDFS_SERVICE_NAME)
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elif role in ['RESOURCEMANAGER', 'NODEMANAGER', 'JOBHISTORY',
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'YARN_GATEWAY']:
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return cm_cluster.get_service(self.YARN_SERVICE_NAME)
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elif role in ['OOZIE_SERVER']:
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return cm_cluster.get_service(self.OOZIE_SERVICE_NAME)
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elif role in ['HIVESERVER2', 'HIVEMETASTORE', 'WEBHCAT']:
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return cm_cluster.get_service(self.HIVE_SERVICE_NAME)
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elif role in ['HUE_SERVER']:
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return cm_cluster.get_service(self.HUE_SERVICE_NAME)
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elif role in ['SPARK_YARN_HISTORY_SERVER']:
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return cm_cluster.get_service(self.SPARK_SERVICE_NAME)
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elif role in ['SERVER']:
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return cm_cluster.get_service(self.ZOOKEEPER_SERVICE_NAME)
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elif role in ['MASTER', 'REGIONSERVER']:
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return cm_cluster.get_service(self.HBASE_SERVICE_NAME)
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else:
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raise ValueError(
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_("Process %(process)s is not supported by CDH plugin") %
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{'process': role})
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def _agents_connected(self, instances, api):
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hostnames = [i.fqdn() for i in instances]
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hostnames_to_manager = [h.hostname for h in
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api.get_all_hosts('full')]
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for hostname in hostnames:
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if hostname not in hostnames_to_manager:
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return False
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return True
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@cpo.event_wrapper(True, step=_("Await agents"), param=('cluster', 1))
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def _await_agents(self, cluster, instances, timeout_config):
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api = self.get_api_client(instances[0].cluster)
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poll_utils.plugin_option_poll(
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cluster, self._agents_connected, timeout_config,
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_("Await Cloudera agents"), 5, {
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'instances': instances, 'api': api})
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def configure_instances(self, instances, cluster=None):
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# instances non-empty
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cpo.add_provisioning_step(
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instances[0].cluster_id, _("Configure instances"), len(instances))
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for inst in instances:
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self.configure_instance(inst, cluster)
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def get_roles_list(self, node_processes):
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current = set(node_processes)
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extra_roles = {
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'YARN_GATEWAY': ["YARN_NODEMANAGER"],
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'HDFS_GATEWAY': ['HDFS_NAMENODE', 'HDFS_DATANODE',
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"HDFS_SECONDARYNAMENODE"]
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}
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for extra_role in six.iterkeys(extra_roles):
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valid_processes = extra_roles[extra_role]
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for valid in valid_processes:
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if valid in current:
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current.add(extra_role)
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break
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return list(current)
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def get_role_type(self, process):
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mapper = {
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'YARN_GATEWAY': 'GATEWAY',
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'HDFS_GATEWAY': 'GATEWAY',
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}
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return mapper.get(process, process)
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@cpo.event_wrapper(True)
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def configure_instance(self, instance, cluster=None):
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roles_list = self.get_roles_list(instance.node_group.node_processes)
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for role in roles_list:
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self._add_role(instance, role, cluster)
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def _add_role(self, instance, process, cluster):
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if process in ['CLOUDERA_MANAGER', 'HDFS_JOURNALNODE',
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'YARN_STANDBYRM']:
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return
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process = self.pu.convert_role_showname(process)
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service = self.get_service_by_role(process, instance=instance)
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role_type = self.get_role_type(process)
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role = service.create_role(self.pu.get_role_name(instance, process),
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role_type, instance.fqdn())
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role.update_config(self._get_configs(process, cluster,
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instance=instance))
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@cloudera_cmd
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def restart_service(self, process, instance):
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service = self.get_service_by_role(process, instance=instance)
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yield service.restart()
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def update_role_config(self, instance, process):
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process = self.pu.convert_role_showname(process)
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service = self.get_service_by_role(process, instance=instance)
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api = self.get_api_client(instance.cluster)
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hosts = api.get_all_hosts(view='full')
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ihost_id = None
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for host in hosts:
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if instance.fqdn() == host.hostname:
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ihost_id = host.hostId
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break
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role_type = self.get_role_type(process)
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roles = service.get_roles_by_type(role_type)
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for role in roles:
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if role.hostRef.hostId == ihost_id:
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role.update_config(
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self._get_configs(role_type, instance=instance))
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self.restart_service(process, instance)
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def get_cloudera_manager_info(self, cluster):
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mng = self.pu.get_manager(cluster)
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info = {
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'Cloudera Manager': {
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'Web UI': 'http://%s:7180' % mng.get_ip_or_dns_name(),
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'Username': 'admin',
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'Password': db_helper.get_cm_password(cluster)
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}
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}
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return info
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def _get_configs(self, service, cluster=None, instance=None):
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# Defined in derived class.
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return
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