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| <p>Ozone TDE 的配置和使用和 HDFS TDE 十分相似，主要的区别是，Ozone 中桶级别的 TDE 必须在创建桶时启用。</p> |
| <h3 id="配置密钥管理服务器">配置密钥管理服务器</h3> |
| <p>使用 TDE 之前，管理员必须要提前配置密钥管理服务 KMS，并且把 KMS 的 URI 通过 core-site.xml 提供给 Ozone。</p> |
| <table> |
| <thead> |
| <tr> |
| <th>参数名</th> |
| <th>值</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>hadoop.security.key.provider.path</td> |
| <td>KMS uri. <br> 比如 kms://http@kms-host:9600/kms</td> |
| </tr> |
| </tbody> |
| </table> |
| <h3 id="使用-tde">使用 TDE</h3> |
| <p>如果你的集群已经配置好了 TDE，那么你只需要创建加密密钥并启用桶加密即可。</p> |
| <p>创建加密密钥的方法为：</p> |
| <ul> |
| <li>使用 hadoop key 命令创建桶加密密钥，和 HDFS 加密区域的使用方法类似。</li> |
| </ul> |
| <div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">hadoop key create encKey |
| </code></pre></div><p>上面这个命令会创建一个用于保护桶数据的密钥。创建完成之后，你可以告诉 Ozone 在读写某个桶中的数据时使用这个密钥。</p> |
| <ul> |
| <li>将加密密钥分配给桶</li> |
| </ul> |
| <div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">ozone sh bucket create -k encKey /vol/encryptedBucket |
| </code></pre></div><p>这条命令执行后，所以写往 <em>encryptedBucket</em> 的数据都会用 encKey 进行加密，当读取里面的数据时，客户端通过 KMS 获取密钥进行解密。换句话说，Ozone 中存储的数据一直是加密的，但用户和客户端对此完全无感知。</p> |
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