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| <h1>Ozone Admin</h1> |
| |
| <!--- |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
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| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| --> |
| <p>Ozone Admin command (<code>ozone admin</code>) is a collection of tools intended to be used only by admins.</p> |
| <p>And quick overview about the available functionalities:</p> |
| <ul> |
| <li><code>ozone admin safemode</code>: You can check the safe mode status and force to leave/enter from/to safemode, <code>--verbose</code> option will print validation status of all rules that evaluate safemode status.</li> |
| <li><code>ozone admin container</code>: Containers are the unit of the replication. The subcommands can help to debug the current state of the containers (list/get/create/…)</li> |
| <li><code>ozone admin pipeline</code>: Can help to check the available pipelines (datanode sets)</li> |
| <li><code>ozone admin datanode</code>: Provides information about the datanode</li> |
| <li><code>ozone admin printTopology</code>: display the rack-awareness related information</li> |
| <li><code>ozone admin replicationmanager</code>: Can be used to check the status of the replications (and start / stop replication in case of emergency).</li> |
| <li><code>ozone admin om</code>: Ozone Manager HA related tool to get information about the current cluster.</li> |
| </ul> |
| <p>For more detailed usage see the output of the <code>--help</code>.</p> |
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