362ab7c285
This patch add validation rule about dfs_replication to both plugin versions. Change-Id: Iac26782f22c35bbc3cd1a78ec241d7e995c76021 Closes-bug: 1458862
188 lines
7.5 KiB
Python
188 lines
7.5 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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from sahara.i18n import _
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from sahara.plugins.cdh.v5 import plugin_utils as pu
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from sahara.plugins import exceptions as ex
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from sahara.plugins import utils as u
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from sahara.utils import general as gu
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PU = pu.PluginUtilsV5()
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def validate_cluster_creating(cluster):
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mng_count = _get_inst_count(cluster, 'CLOUDERA_MANAGER')
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if mng_count != 1:
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raise ex.InvalidComponentCountException('CLOUDERA_MANAGER',
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1, mng_count)
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nn_count = _get_inst_count(cluster, 'HDFS_NAMENODE')
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if nn_count != 1:
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raise ex.InvalidComponentCountException('HDFS_NAMENODE', 1, nn_count)
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snn_count = _get_inst_count(cluster, 'HDFS_SECONDARYNAMENODE')
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if snn_count != 1:
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raise ex.InvalidComponentCountException('HDFS_SECONDARYNAMENODE', 1,
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snn_count)
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dn_count = _get_inst_count(cluster, 'HDFS_DATANODE')
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replicas = PU.get_config_value('HDFS', 'dfs_replication', cluster)
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if dn_count < replicas:
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raise ex.InvalidComponentCountException(
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'HDFS_DATANODE', replicas, dn_count,
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_('Number of datanodes must be not less than dfs_replication.'))
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rm_count = _get_inst_count(cluster, 'YARN_RESOURCEMANAGER')
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if rm_count > 1:
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raise ex.InvalidComponentCountException('YARN_RESOURCEMANAGER',
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_('0 or 1'), rm_count)
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hs_count = _get_inst_count(cluster, 'YARN_JOBHISTORY')
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if hs_count > 1:
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raise ex.InvalidComponentCountException('YARN_JOBHISTORY', _('0 or 1'),
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hs_count)
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if rm_count > 0 and hs_count < 1:
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raise ex.RequiredServiceMissingException(
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'YARN_JOBHISTORY', required_by='YARN_RESOURCEMANAGER')
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nm_count = _get_inst_count(cluster, 'YARN_NODEMANAGER')
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if rm_count == 0:
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if nm_count > 0:
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raise ex.RequiredServiceMissingException(
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'YARN_RESOURCEMANAGER', required_by='YARN_NODEMANAGER')
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oo_count = _get_inst_count(cluster, 'OOZIE_SERVER')
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if oo_count > 1:
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raise ex.InvalidComponentCountException('OOZIE_SERVER', _('0 or 1'),
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oo_count)
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if oo_count == 1:
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if dn_count < 1:
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raise ex.RequiredServiceMissingException(
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'HDFS_DATANODE', required_by='OOZIE_SERVER')
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if nm_count < 1:
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raise ex.RequiredServiceMissingException(
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'YARN_NODEMANAGER', required_by='OOZIE_SERVER')
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if hs_count != 1:
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raise ex.RequiredServiceMissingException(
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'YARN_JOBHISTORY', required_by='OOZIE_SERVER')
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hms_count = _get_inst_count(cluster, 'HIVE_METASTORE')
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hvs_count = _get_inst_count(cluster, 'HIVE_SERVER2')
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whc_count = _get_inst_count(cluster, 'HIVE_WEBHCAT')
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if hms_count and rm_count < 1:
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raise ex.RequiredServiceMissingException(
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'YARN_RESOURCEMANAGER', required_by='HIVE_METASTORE')
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if hms_count and not hvs_count:
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raise ex.RequiredServiceMissingException(
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'HIVE_SERVER2', required_by='HIVE_METASTORE')
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if hvs_count and not hms_count:
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raise ex.RequiredServiceMissingException(
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'HIVE_METASTORE', required_by='HIVE_SERVER2')
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if whc_count and not hms_count:
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raise ex.RequiredServiceMissingException(
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'HIVE_METASTORE', required_by='WEBHCAT')
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hue_count = _get_inst_count(cluster, 'HUE_SERVER')
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if hue_count > 1:
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raise ex.InvalidComponentCountException('HUE_SERVER', _('0 or 1'),
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hue_count)
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shs_count = _get_inst_count(cluster, 'SPARK_YARN_HISTORY_SERVER')
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if shs_count > 1:
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raise ex.InvalidComponentCountException('SPARK_YARN_HISTORY_SERVER',
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_('0 or 1'), shs_count)
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if shs_count and not rm_count:
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raise ex.RequiredServiceMissingException(
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'YARN_RESOURCEMANAGER', required_by='SPARK_YARN_HISTORY_SERVER')
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if oo_count < 1 and hue_count:
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raise ex.RequiredServiceMissingException(
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'OOZIE_SERVER', required_by='HUE_SERVER')
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if hms_count < 1 and hue_count:
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raise ex.RequiredServiceMissingException(
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'HIVE_METASTORE', required_by='HUE_SERVER')
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hbm_count = _get_inst_count(cluster, 'HBASE_MASTER')
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hbr_count = _get_inst_count(cluster, 'HBASE_REGIONSERVER')
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zk_count = _get_inst_count(cluster, 'ZOOKEEPER_SERVER')
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if hbm_count >= 1:
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if zk_count < 1:
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raise ex.RequiredServiceMissingException('ZOOKEEPER',
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required_by='HBASE')
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if hbr_count < 1:
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raise ex.InvalidComponentCountException('HBASE_REGIONSERVER',
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_('at least 1'), hbr_count)
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elif hbr_count >= 1:
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raise ex.InvalidComponentCountException('HBASE_MASTER',
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_('at least 1'), hbm_count)
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def validate_additional_ng_scaling(cluster, additional):
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rm = PU.get_resourcemanager(cluster)
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scalable_processes = _get_scalable_processes()
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for ng_id in additional:
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ng = gu.get_by_id(cluster.node_groups, ng_id)
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if not set(ng.node_processes).issubset(scalable_processes):
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msg = _("CDH plugin cannot scale nodegroup with processes: "
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"%(processes)s")
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raise ex.NodeGroupCannotBeScaled(
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ng.name, msg % {'processes': ' '.join(ng.node_processes)})
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if not rm and 'YARN_NODEMANAGER' in ng.node_processes:
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msg = _("CDH plugin cannot scale node group with processes "
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"which have no master-processes run in cluster")
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raise ex.NodeGroupCannotBeScaled(ng.name, msg)
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def validate_existing_ng_scaling(cluster, existing):
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scalable_processes = _get_scalable_processes()
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dn_to_delete = 0
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for ng in cluster.node_groups:
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if ng.id in existing:
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if (ng.count > existing[ng.id] and
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"HDFS_DATANODE" in ng.node_processes):
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dn_to_delete += ng.count - existing[ng.id]
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if not set(ng.node_processes).issubset(scalable_processes):
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msg = _("CDH plugin cannot scale nodegroup with processes: "
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"%(processes)s")
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raise ex.NodeGroupCannotBeScaled(
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ng.name, msg % {'processes': ' '.join(ng.node_processes)})
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dn_count = _get_inst_count(cluster, 'HDFS_DATANODE') - dn_to_delete
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replicas = PU.get_config_value('HDFS', 'dfs_replication', cluster)
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if dn_count < replicas:
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raise ex.ClusterCannotBeScaled(
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cluster,
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_('Number of datanodes must be not less than dfs_replication.'))
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def _get_scalable_processes():
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return ['HDFS_DATANODE', 'YARN_NODEMANAGER']
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def _get_inst_count(cluster, process):
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return sum([ng.count for ng in u.get_node_groups(cluster, process)])
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