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42<div class="refentry" lang="en">
43<a name="man.rndc-confgen"></a><div class="titlepage"></div>
44<div class="refnamediv">
45<h2>Name</h2>
46<p><span class="application">rndc-confgen</span> &#8212; rndc key generation tool</p>
47</div>
48<div class="refsynopsisdiv">
49<h2>Synopsis</h2>
50<div class="cmdsynopsis"><p><code class="command">rndc-confgen</code>  [<code class="option">-a</code>] [<code class="option">-b <em class="replaceable"><code>keysize</code></em></code>] [<code class="option">-c <em class="replaceable"><code>keyfile</code></em></code>] [<code class="option">-h</code>] [<code class="option">-k <em class="replaceable"><code>keyname</code></em></code>] [<code class="option">-p <em class="replaceable"><code>port</code></em></code>] [<code class="option">-r <em class="replaceable"><code>randomfile</code></em></code>] [<code class="option">-s <em class="replaceable"><code>address</code></em></code>] [<code class="option">-t <em class="replaceable"><code>chrootdir</code></em></code>] [<code class="option">-u <em class="replaceable"><code>user</code></em></code>]</p></div>
51</div>
52<div class="refsect1" lang="en">
53<a name="id2642617"></a><h2>DESCRIPTION</h2>
54<p><span><strong class="command">rndc-confgen</strong></span>
55      generates configuration files
56      for <span><strong class="command">rndc</strong></span>.  It can be used as a
57      convenient alternative to writing the
58      <code class="filename">rndc.conf</code> file
59      and the corresponding <span><strong class="command">controls</strong></span>
60      and <span><strong class="command">key</strong></span>
61      statements in <code class="filename">named.conf</code> by hand.
62      Alternatively, it can be run with the <span><strong class="command">-a</strong></span>
63      option to set up a <code class="filename">rndc.key</code> file and
64      avoid the need for a <code class="filename">rndc.conf</code> file
65      and a <span><strong class="command">controls</strong></span> statement altogether.
66    </p>
67</div>
68<div class="refsect1" lang="en">
69<a name="id2642683"></a><h2>OPTIONS</h2>
70<div class="variablelist"><dl>
71<dt><span class="term">-a</span></dt>
72<dd>
73<p>
74            Do automatic <span><strong class="command">rndc</strong></span> configuration.
75            This creates a file <code class="filename">rndc.key</code>
76            in <code class="filename">/etc</code> (or whatever
77            <code class="varname">sysconfdir</code>
78            was specified as when <acronym class="acronym">BIND</acronym> was
79            built)
80            that is read by both <span><strong class="command">rndc</strong></span>
81            and <span><strong class="command">named</strong></span> on startup.  The
82            <code class="filename">rndc.key</code> file defines a default
83            command channel and authentication key allowing
84            <span><strong class="command">rndc</strong></span> to communicate with
85            <span><strong class="command">named</strong></span> on the local host
86            with no further configuration.
87          </p>
88<p>
89            Running <span><strong class="command">rndc-confgen -a</strong></span> allows
90            BIND 9 and <span><strong class="command">rndc</strong></span> to be used as
91            drop-in
92            replacements for BIND 8 and <span><strong class="command">ndc</strong></span>,
93            with no changes to the existing BIND 8
94            <code class="filename">named.conf</code> file.
95          </p>
96<p>
97            If a more elaborate configuration than that
98            generated by <span><strong class="command">rndc-confgen -a</strong></span>
99            is required, for example if rndc is to be used remotely,
100            you should run <span><strong class="command">rndc-confgen</strong></span> without
101            the
102            <span><strong class="command">-a</strong></span> option and set up a
103            <code class="filename">rndc.conf</code> and
104            <code class="filename">named.conf</code>
105            as directed.
106          </p>
107</dd>
108<dt><span class="term">-b <em class="replaceable"><code>keysize</code></em></span></dt>
109<dd><p>
110            Specifies the size of the authentication key in bits.
111            Must be between 1 and 512 bits; the default is 128.
112          </p></dd>
113<dt><span class="term">-c <em class="replaceable"><code>keyfile</code></em></span></dt>
114<dd><p>
115            Used with the <span><strong class="command">-a</strong></span> option to specify
116            an alternate location for <code class="filename">rndc.key</code>.
117          </p></dd>
118<dt><span class="term">-h</span></dt>
119<dd><p>
120            Prints a short summary of the options and arguments to
121            <span><strong class="command">rndc-confgen</strong></span>.
122          </p></dd>
123<dt><span class="term">-k <em class="replaceable"><code>keyname</code></em></span></dt>
124<dd><p>
125            Specifies the key name of the rndc authentication key.
126            This must be a valid domain name.
127            The default is <code class="constant">rndc-key</code>.
128          </p></dd>
129<dt><span class="term">-p <em class="replaceable"><code>port</code></em></span></dt>
130<dd><p>
131            Specifies the command channel port where <span><strong class="command">named</strong></span>
132            listens for connections from <span><strong class="command">rndc</strong></span>.
133            The default is 953.
134          </p></dd>
135<dt><span class="term">-r <em class="replaceable"><code>randomfile</code></em></span></dt>
136<dd><p>
137            Specifies a source of random data for generating the
138            authorization.  If the operating
139            system does not provide a <code class="filename">/dev/random</code>
140            or equivalent device, the default source of randomness
141            is keyboard input.  <code class="filename">randomdev</code>
142            specifies
143            the name of a character device or file containing random
144            data to be used instead of the default.  The special value
145            <code class="filename">keyboard</code> indicates that keyboard
146            input should be used.
147          </p></dd>
148<dt><span class="term">-s <em class="replaceable"><code>address</code></em></span></dt>
149<dd><p>
150            Specifies the IP address where <span><strong class="command">named</strong></span>
151            listens for command channel connections from
152            <span><strong class="command">rndc</strong></span>.  The default is the loopback
153            address 127.0.0.1.
154          </p></dd>
155<dt><span class="term">-t <em class="replaceable"><code>chrootdir</code></em></span></dt>
156<dd><p>
157            Used with the <span><strong class="command">-a</strong></span> option to specify
158            a directory where <span><strong class="command">named</strong></span> will run
159            chrooted.  An additional copy of the <code class="filename">rndc.key</code>
160            will be written relative to this directory so that
161            it will be found by the chrooted <span><strong class="command">named</strong></span>.
162          </p></dd>
163<dt><span class="term">-u <em class="replaceable"><code>user</code></em></span></dt>
164<dd><p>
165            Used with the <span><strong class="command">-a</strong></span> option to set the
166            owner
167            of the <code class="filename">rndc.key</code> file generated.
168            If
169            <span><strong class="command">-t</strong></span> is also specified only the file
170            in
171            the chroot area has its owner changed.
172          </p></dd>
173</dl></div>
174</div>
175<div class="refsect1" lang="en">
176<a name="id2650101"></a><h2>EXAMPLES</h2>
177<p>
178      To allow <span><strong class="command">rndc</strong></span> to be used with
179      no manual configuration, run
180    </p>
181<p><strong class="userinput"><code>rndc-confgen -a</code></strong>
182    </p>
183<p>
184      To print a sample <code class="filename">rndc.conf</code> file and
185      corresponding <span><strong class="command">controls</strong></span> and <span><strong class="command">key</strong></span>
186      statements to be manually inserted into <code class="filename">named.conf</code>,
187      run
188    </p>
189<p><strong class="userinput"><code>rndc-confgen</code></strong>
190    </p>
191</div>
192<div class="refsect1" lang="en">
193<a name="id2652410"></a><h2>SEE ALSO</h2>
194<p><span class="citerefentry"><span class="refentrytitle">rndc</span>(8)</span>,
195      <span class="citerefentry"><span class="refentrytitle">rndc.conf</span>(5)</span>,
196      <span class="citerefentry"><span class="refentrytitle">named</span>(8)</span>,
197      <em class="citetitle">BIND 9 Administrator Reference Manual</em>.
198    </p>
199</div>
200<div class="refsect1" lang="en">
201<a name="id2652449"></a><h2>AUTHOR</h2>
202<p><span class="corpauthor">Internet Systems Consortium</span>
203    </p>
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