103 lines
3.6 KiB
Markdown
103 lines
3.6 KiB
Markdown
---
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title: Ozone CLI
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menu:
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main:
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parent: Client
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weight: 1
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---
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<!---
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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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, 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 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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-->
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Ozone has a set of command line tools that can be used to manage ozone.
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All these commands are invoked via the ```ozone``` script.
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The commands supported by ozone are:
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* **classpath** - Prints the class path needed to get the hadoop jar and the
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required libraries.
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* **dtutil** - Operations related to delegation tokens
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* **fs** - Runs a command on ozone file system.
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* **datanode** - Via daemon command, the HDDS data nodes can be started or
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stopped.
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* **envvars** - Display computed Hadoop environment variables.
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* **freon** - Runs the ozone load generator.
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* **genesis** - Developer Only, Ozone micro-benchmark application.
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* **getconf** - Reads ozone config values from configuration.
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* **jmxget** - Get JMX exported values from NameNode or DataNode.
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* **om** - Ozone Manager, via daemon command can be started or stopped.
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* **sh** - Primary command line interface for ozone.
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* **scm** - Storage Container Manager service, via daemon can be
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stated or stopped.
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* **scmcli** - Developer only, Command Line Interface for the Storage
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Container Manager.
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* **version** - Prints the version of Ozone and HDDS.
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* **genconf** - Generate minimally required ozone configs and output to
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ozone-site.xml.
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## Understanding Ozone command shell
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The most used command when working with Ozone is the Ozone command shell.
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Ozone command shell gives a command shell interface to work against
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Ozone.
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The Ozone shell commands take the following format.
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> _ozone sh object action url_
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**ozone** script is used to invoke all Ozone sub-commands. The ozone shell is
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invoked via ```sh``` command.
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The object can be a volume, bucket or a key. The action is various verbs like
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create, list, delete etc.
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Ozone URL can point to a volume, bucket or keys in the following format:
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_\[scheme\]\[server:port\]/volume/bucket/key_
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Where,
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1. Scheme - This should be `o3` which is the native RPC protocol to access
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Ozone API. The usage of the schema is optional.
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2. Server:Port - This is the address of the Ozone Manager. This can be server
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only, in that case, the default port is used. If this value is omitted
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then the defaults specified in the ozone-site.xml will be used for Ozone
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Manager address.
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Depending on the call, the volume/bucket/key names will be part of the URL.
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Please see volume commands, bucket commands, and key commands section for more
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detail.
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## Invoking help
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Ozone shell help can be invoked at _object_ level or at _action_ level.
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For example:
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{{< highlight bash >}}
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ozone sh volume --help
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{{< /highlight >}}
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This will show all possible actions for volumes.
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or it can be invoked to explain a specific action like
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{{< highlight bash >}}
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ozone sh volume create --help
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{{< /highlight >}}
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This command will give you command line options of the create command.
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