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Yang, Tong
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Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Yang, Tong <yangtong2@huawei.com> Co-committed-by: Yang, Tong <yangtong2@huawei.com>
23 lines
3.6 KiB
HTML
23 lines
3.6 KiB
HTML
<a name="admin_guide_000253"></a><a name="admin_guide_000253"></a>
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<h1 class="topictitle1">Changing the Password for the Kerberos Administrator</h1>
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<div id="body1529658735918"><div class="section" id="admin_guide_000253__section42634350113337"><h4 class="sectiontitle">Scenario</h4><p id="admin_guide_000253__p30830302113337">It is recommended that the administrator periodically change the password of Kerberos administrator <strong id="admin_guide_000253__b112111526369">kadmin</strong> to improve the system O&M security.</p>
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<p id="admin_guide_000253__p9037267113337">If the user password is changed, the OMS Kerberos administrator password is changed as well.</p>
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</div>
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<div class="section" id="admin_guide_000253__section14226543113337"><h4 class="sectiontitle">Prerequisites</h4><p id="admin_guide_000253__p11499336113337">You have installed the client on any node in the cluster and obtained the IP address of the node.</p>
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<div class="section" id="admin_guide_000253__section10739164043114"><h4 class="sectiontitle">Procedure</h4><ol id="admin_guide_000253__ol16786421113337"><li id="admin_guide_000253__li16860063113337"><span>Log in to the node where the client is installed as user <strong id="admin_guide_000253__b09051648372">root</strong>.</span></li><li id="admin_guide_000253__li17522840113337"><span>Run the following command to go to the client directory, for example, <strong id="admin_guide_000253__b842352706174617">/opt/hadoopclient</strong>:</span><p><p id="admin_guide_000253__p23487833113337"><strong id="admin_guide_000253__b10063907113337">cd /opt/hadoopclient</strong></p>
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</p></li><li id="admin_guide_000253__li23466303113337"><span>Run the following command to set environment variables:</span><p><p id="admin_guide_000253__p9870143113337"><strong id="admin_guide_000253__b21722427113337">source bigdata_env</strong></p>
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</p></li><li id="admin_guide_000253__li61284115113337"><span>Run the following command to change the password for <strong id="admin_guide_000253__b1230244421113313">kadmin/admin</strong>. The password changing takes effect on all servers.</span><p><p id="admin_guide_000253__p14686130113337"><strong id="admin_guide_000253__b65066312113337">kpasswd kadmin/admin</strong></p>
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<p id="admin_guide_000253__p48725902113337">The password must meet the following complexity requirements by default:</p>
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<ul id="admin_guide_000253__ul35879942113337"><li id="admin_guide_000253__li54484023113337">The password contains at least 8 characters.</li><li id="admin_guide_000253__li20594164113337">The password contains at least four types of the following characters: Uppercase letters, lowercase letters, digits, spaces, and special characters which can only be ~`!?,.;-_'(){}[]/<>@#$%^&*+|\=.</li><li id="admin_guide_000253__li51129748113337">The password cannot be the same as the username or the username spelled backwards.</li><li id="admin_guide_000253__li1894134612512">The password cannot be a common easily-cracked passwords, for example, <strong id="admin_guide_000253__b9686945171012">Admin@12345</strong>.</li><li id="admin_guide_000253__li57514554113337">The password cannot be the same as the password used in the last <em id="admin_guide_000253__i16343528110">N</em> times. <em id="admin_guide_000253__i834382191118">N</em> indicates the value of <strong id="admin_guide_000253__b1534417201117">Repetition Rule</strong> in <a href="admin_guide_000150.html">Configuring Password Policies</a>.</li></ul>
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</p></li></ol>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="admin_guide_000252.html">Changing the Password for a System Internal User</a></div>
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