63 lines
1.9 KiB
Markdown
63 lines
1.9 KiB
Markdown
---
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{
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"title": "CREATE CLUSTER",
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"language": "zh-CN"
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}
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---
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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# CREATE CLUSTER
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## description
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该语句用于新建逻辑集群 (cluster), 需要管理员权限。如果不使用多租户，直接创建一个名称为default_cluster的cluster。否则创建一个自定义名称的cluster。
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语法
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CREATE CLUSTER [IF NOT EXISTS] cluster_name
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PROPERTIES ("key"="value", ...)
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IDENTIFIED BY 'password'
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1. PROPERTIES
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指定逻辑集群的属性
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PROPERTIES ("instance_num" = "3")
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instance_num 逻辑集群节点树
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2. identified by ‘password' 每个逻辑集群含有一个superuser，创建逻辑集群时必须指定其密码
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## example
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1. 新建一个含有3个be节点逻辑集群 test_cluster, 并指定其superuser用户密码
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CREATE CLUSTER test_cluster PROPERTIES("instance_num"="3") IDENTIFIED BY 'test';
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2. 新建一个含有3个be节点逻辑集群 default_cluster(不使用多租户), 并指定其superuser用户密码
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CREATE CLUSTER default_cluster PROPERTIES("instance_num"="3") IDENTIFIED BY 'test';
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## keyword
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CREATE,CLUSTER
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