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<section id="k5srvutil">
<span id="k5srvutil-1"></span><h1>k5srvutil<a class="headerlink" href="#k5srvutil" title="Link to this heading">¶</a></h1>
<section id="synopsis">
<h2>SYNOPSIS<a class="headerlink" href="#synopsis" title="Link to this heading">¶</a></h2>
<p><strong>k5srvutil</strong> <em>operation</em>
[<strong>-i</strong>]
[<strong>-f</strong> <em>filename</em>]
[<strong>-e</strong> <em>keysalts</em>]</p>
</section>
<section id="description">
<h2>DESCRIPTION<a class="headerlink" href="#description" title="Link to this heading">¶</a></h2>
<p>k5srvutil allows an administrator to list keys currently in
a keytab, to obtain new keys for a principal currently in a keytab,
or to delete non-current keys from a keytab.</p>
<p><em>operation</em> must be one of the following:</p>
<dl class="simple">
<dt><strong>list</strong></dt><dd><p>Lists the keys in a keytab, showing version number and principal
name.</p>
</dd>
<dt><strong>change</strong></dt><dd><p>Uses the kadmin protocol to update the keys in the Kerberos
database to new randomly-generated keys, and updates the keys in
the keytab to match. If a key’s version number doesn’t match the
version number stored in the Kerberos server’s database, then the
operation will fail. If the <strong>-i</strong> flag is given, k5srvutil will
prompt for confirmation before changing each key. If the <strong>-k</strong>
option is given, the old and new keys will be displayed.
Ordinarily, keys will be generated with the default encryption
types and key salts. This can be overridden with the <strong>-e</strong>
option. Old keys are retained in the keytab so that existing
tickets continue to work, but <strong>delold</strong> should be used after
such tickets expire, to prevent attacks against the old keys.</p>
</dd>
<dt><strong>delold</strong></dt><dd><p>Deletes keys that are not the most recent version from the keytab.
This operation should be used some time after a change operation
to remove old keys, after existing tickets issued for the service
have expired. If the <strong>-i</strong> flag is given, then k5srvutil will
prompt for confirmation for each principal.</p>
</dd>
<dt><strong>delete</strong></dt><dd><p>Deletes particular keys in the keytab, interactively prompting for
each key.</p>
</dd>
</dl>
<p>In all cases, the default keytab is used unless this is overridden by
the <strong>-f</strong> option.</p>
<p>k5srvutil uses the <a class="reference internal" href="kadmin_local.html#kadmin-1"><span class="std std-ref">kadmin</span></a> program to edit the keytab in
place.</p>
</section>
<section id="environment">
<h2>ENVIRONMENT<a class="headerlink" href="#environment" title="Link to this heading">¶</a></h2>
<p>See <a class="reference internal" href="../../user/user_config/kerberos.html#kerberos-7"><span class="std std-ref">kerberos</span></a> for a description of Kerberos environment
variables.</p>
</section>
<section id="see-also">
<h2>SEE ALSO<a class="headerlink" href="#see-also" title="Link to this heading">¶</a></h2>
<p><a class="reference internal" href="kadmin_local.html#kadmin-1"><span class="std std-ref">kadmin</span></a>, <a class="reference internal" href="ktutil.html#ktutil-1"><span class="std std-ref">ktutil</span></a>, <a class="reference internal" href="../../user/user_config/kerberos.html#kerberos-7"><span class="std std-ref">kerberos</span></a></p>
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<ul>
<li><a class="reference internal" href="#">k5srvutil</a><ul>
<li><a class="reference internal" href="#synopsis">SYNOPSIS</a></li>
<li><a class="reference internal" href="#description">DESCRIPTION</a></li>
<li><a class="reference internal" href="#environment">ENVIRONMENT</a></li>
<li><a class="reference internal" href="#see-also">SEE ALSO</a></li>
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<h2>Table of contents</h2>
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<li class="toctree-l1"><a class="reference internal" href="../../user/index.html">For users</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../install.html">Installation guide</a></li>
<li class="toctree-l2"><a class="reference internal" href="../conf_files/index.html">Configuration Files</a></li>
<li class="toctree-l2"><a class="reference internal" href="../realm_config.html">Realm configuration decisions</a></li>
<li class="toctree-l2"><a class="reference internal" href="../database.html">Database administration</a></li>
<li class="toctree-l2"><a class="reference internal" href="../dbtypes.html">Database types</a></li>
<li class="toctree-l2"><a class="reference internal" href="../lockout.html">Account lockout</a></li>
<li class="toctree-l2"><a class="reference internal" href="../conf_ldap.html">Configuring Kerberos with OpenLDAP back-end</a></li>
<li class="toctree-l2"><a class="reference internal" href="../appl_servers.html">Application servers</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../spake.html">SPAKE Preauthentication</a></li>
<li class="toctree-l2"><a class="reference internal" href="../dictionary.html">Addressing dictionary attack risks</a></li>
<li class="toctree-l2"><a class="reference internal" href="../princ_dns.html">Principal names and DNS</a></li>
<li class="toctree-l2"><a class="reference internal" href="../enctypes.html">Encryption types</a></li>
<li class="toctree-l2"><a class="reference internal" href="../https.html">HTTPS proxy configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="../auth_indicator.html">Authentication indicators</a></li>
<li class="toctree-l2 current"><a class="reference internal" href="index.html">Administration programs</a><ul class="current">
<li class="toctree-l3"><a class="reference internal" href="kadmin_local.html">kadmin</a></li>
<li class="toctree-l3"><a class="reference internal" href="kadmind.html">kadmind</a></li>
<li class="toctree-l3"><a class="reference internal" href="kdb5_util.html">kdb5_util</a></li>
<li class="toctree-l3"><a class="reference internal" href="kdb5_ldap_util.html">kdb5_ldap_util</a></li>
<li class="toctree-l3"><a class="reference internal" href="krb5kdc.html">krb5kdc</a></li>
<li class="toctree-l3"><a class="reference internal" href="kprop.html">kprop</a></li>
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<li class="toctree-l3"><a class="reference internal" href="ktutil.html">ktutil</a></li>
<li class="toctree-l3 current"><a class="current reference internal" href="#">k5srvutil</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../mitK5defaults.html">MIT Kerberos defaults</a></li>
<li class="toctree-l2"><a class="reference internal" href="../env_variables.html">Environment variables</a></li>
<li class="toctree-l2"><a class="reference internal" href="../troubleshoot.html">Troubleshooting</a></li>
<li class="toctree-l2"><a class="reference internal" href="../advanced/index.html">Advanced topics</a></li>
<li class="toctree-l2"><a class="reference internal" href="../various_envs.html">Various links</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../plugindev/index.html">For plugin module developers</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../build/index.html">Building Kerberos V5</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../basic/index.html">Kerberos V5 concepts</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../formats/index.html">Protocols and file formats</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../mitK5features.html">MIT Kerberos features</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../build_this.html">How to build this documentation from the source</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../about.html">Contributing to the MIT Kerberos Documentation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../resources.html">Resources</a></li>
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