-.\" Copyright (C) 2014-2016 Internet Systems Consortium, Inc. ("ISC")
+.\" Copyright (C) 2014-2017 Internet Systems Consortium, Inc. ("ISC")
.\"
.\" This Source Code Form is subject to the terms of the Mozilla Public
.\" License, v. 2.0. If a copy of the MPL was not distributed with this
.SH "DESCRIPTION"
.PP
\fBdelv\fR
-(Domain Entity Lookup & Validation) is a tool for sending DNS queries and validating the results, using the same internal resolver and validator logic as
+is a tool for sending DNS queries and validating the results, using the same internal resolver and validator logic as
\fBnamed\fR\&.
.PP
\fBdelv\fR
\fBInternet Systems Consortium, Inc\&.\fR
.SH "COPYRIGHT"
.br
-Copyright \(co 2014-2016 Internet Systems Consortium, Inc. ("ISC")
+Copyright \(co 2014-2017 Internet Systems Consortium, Inc. ("ISC")
.br
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!--
- - Copyright (C) 2014-2016 Internet Systems Consortium, Inc. ("ISC")
+ - Copyright (C) 2014-2017 Internet Systems Consortium, Inc. ("ISC")
-
- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
<a name="id-1.7"></a><h2>DESCRIPTION</h2>
<p><span class="command"><strong>delv</strong></span>
- (Domain Entity Lookup & Validation) is a tool for sending
+ is a tool for sending
DNS queries and validating the results, using the same internal
resolver and validator logic as <span class="command"><strong>named</strong></span>.
</p>
.SH "DESCRIPTION"
.PP
\fBdig\fR
-(domain information groper) is a flexible tool for interrogating DNS name servers\&. It performs DNS lookups and displays the answers that are returned from the name server(s) that were queried\&. Most DNS administrators use
+is a flexible tool for interrogating DNS name servers\&. It performs DNS lookups and displays the answers that are returned from the name server(s) that were queried\&. Most DNS administrators use
\fBdig\fR
to troubleshoot DNS problems because of its flexibility, ease of use and clarity of output\&. Other lookup tools tend to have less functionality than
\fBdig\fR\&.
<div class="refsection">
<a name="id-1.7"></a><h2>DESCRIPTION</h2>
- <p><span class="command"><strong>dig</strong></span>
- (domain information groper) is a flexible tool
+ <p><span class="command"><strong>dig</strong></span> is a flexible tool
for interrogating DNS name servers. It performs DNS lookups and
displays the answers that are returned from the name server(s) that
were queried. Most DNS administrators use <span class="command"><strong>dig</strong></span> to
<dt><span class="term"><a name="dig"></a><span class="command"><strong>dig</strong></span></span></dt>
<dd>
<p>
- The domain information groper (<span class="command"><strong>dig</strong></span>)
+ <span class="command"><strong>dig</strong></span>
is the most versatile and complete of these lookup tools.
It has two modes: simple interactive
mode for a single query, and batch mode which executes a
[ <span class="command"><strong>has-old-clients</strong></span> <em class="replaceable"><code>yes_or_no</code></em> ; ]
[ <span class="command"><strong>host-statistics</strong></span> <em class="replaceable"><code>yes_or_no</code></em> ; ]
[ <span class="command"><strong>host-statistics-max</strong></span> <em class="replaceable"><code>number</code></em> ; ]
+ [ <span class="command"><strong>glue-cache</strong></span> <em class="replaceable"><code>yes_or_no</code></em> ; ]
[ <span class="command"><strong>minimal-any</strong></span> <em class="replaceable"><code>yes_or_no</code></em> ; ]
[ <span class="command"><strong>minimal-responses</strong></span> ( <em class="replaceable"><code>yes_or_no</code></em> | <code class="option">no-auth</code> | <code class="option">no-auth-recursive</code> ) ; ]
[ <span class="command"><strong>multiple-cnames</strong></span> <em class="replaceable"><code>yes_or_no</code></em> ; ]
The default is <strong class="userinput"><code>yes</code></strong>.
</p>
</dd>
+<dt><span class="term"><span class="command"><strong>glue-cache</strong></span></span></dt>
+<dd>
+ <p>
+ When set to <strong class="userinput"><code>yes</code></strong>, a cache is
+ used to improve query performance when adding
+ address-type (A and AAAA) glue records to the
+ additional section of DNS response messages that
+ delegate to a child zone.
+ </p>
+ <p>
+ The glue cache uses memory proportional to the
+ number of delegations in the zone. The default
+ setting is <strong class="userinput"><code>no</code></strong>. Setting it to
+ <strong class="userinput"><code>yes</code></strong> will improve performance
+ at the cost of increased memory usage for the zone.
+ </p>
+ <p>
+ The glue cache is only used when
+ <strong class="userinput"><code>minimal-responses</code></strong> is also set
+ to <strong class="userinput"><code>yes</code></strong>.
+ </p>
+ </dd>
<dt><span class="term"><span class="command"><strong>minimal-any</strong></span></span></dt>
<dd>
<p>
will be added to the authority or additional sections.
The default is <strong class="userinput"><code>no</code></strong>.
</p>
- </dd>
+ </dd>
<dt><span class="term"><span class="command"><strong>multiple-cnames</strong></span></span></dt>
<dd>
<p>
</p>
</li>
<li class="listitem">
+ <p>
The <span class="command"><strong>new-zones-directory</strong></span> option allows
<span class="command"><strong>named</strong></span> to store configuration parameters
for zones added via <span class="command"><strong>rndc addzone</strong></span> in a
</p>
</li>
<li class="listitem">
+ <p>
Many aspects of <span class="command"><strong>named</strong></span> have been modified
to improve query performance, and in particular, performance
for delegation-heavy zones:
</li>
<li class="listitem">
<p>
- In place of the acache, <span class="command"><strong>named</strong></span> now uses
+ In place of the acache, <span class="command"><strong>named</strong></span> can now use
a glue cache to speed up retrieval of glue records when sending
- delegation responses.
+ delegation responses. Use <span class="command"><strong>glue-cache yes;</strong></span>
+ to enable this feature. Because it increases memory usage,
+ the glue cache is disabled by default, but it can signifiantly
+ increase performance when serving delegation-heavy zones.
</p>
</li>
<li class="listitem">
</ul></div>
</li>
<li class="listitem">
+ <p>
The <span class="command"><strong>dnstap-read -x</strong></span> option prints a hex
dump of the wire format DNS message encapsulated in each
<span class="command"><strong>dnstap</strong></span> log entry. [RT #44816]
</p>
</li>
<li class="listitem">
+ <p>
The <span class="command"><strong>host -A</strong></span> option returns most
records for a name, but omits types RRSIG, NSEC and NSEC3.
</p>
</li>
<li class="listitem">
+ <p>
Query logic has been substantially refactored (e.g. query_find
function has been split into smaller functions) for improved
readability, maintainability and testability. [RT #43929]
</p>
</li>
<li class="listitem">
+ <p>
<span class="command"><strong>dnstap</strong></span> now stores both the local and remote
addresses for all messages, instead of only the remote address.
The default output format for <span class="command"><strong>dnstap-read</strong></span> has
<a name="id-1.14.5.7"></a><h2>DESCRIPTION</h2>
<p><span class="command"><strong>delv</strong></span>
- (Domain Entity Lookup & Validation) is a tool for sending
+ is a tool for sending
DNS queries and validating the results, using the same internal
resolver and validator logic as <span class="command"><strong>named</strong></span>.
</p>
<div class="refsection">
<a name="id-1.14.2.7"></a><h2>DESCRIPTION</h2>
- <p><span class="command"><strong>dig</strong></span>
- (domain information groper) is a flexible tool
+ <p><span class="command"><strong>dig</strong></span> is a flexible tool
for interrogating DNS name servers. It performs DNS lookups and
displays the answers that are returned from the name server(s) that
were queried. Most DNS administrators use <span class="command"><strong>dig</strong></span> to
</p>
</li>
<li class="listitem">
+ <p>
The <span class="command"><strong>new-zones-directory</strong></span> option allows
<span class="command"><strong>named</strong></span> to store configuration parameters
for zones added via <span class="command"><strong>rndc addzone</strong></span> in a
</p>
</li>
<li class="listitem">
+ <p>
Many aspects of <span class="command"><strong>named</strong></span> have been modified
to improve query performance, and in particular, performance
for delegation-heavy zones:
</li>
<li class="listitem">
<p>
- In place of the acache, <span class="command"><strong>named</strong></span> now uses
+ In place of the acache, <span class="command"><strong>named</strong></span> can now use
a glue cache to speed up retrieval of glue records when sending
- delegation responses.
+ delegation responses. Use <span class="command"><strong>glue-cache yes;</strong></span>
+ to enable this feature. Because it increases memory usage,
+ the glue cache is disabled by default, but it can signifiantly
+ increase performance when serving delegation-heavy zones.
</p>
</li>
<li class="listitem">
</ul></div>
</li>
<li class="listitem">
+ <p>
The <span class="command"><strong>dnstap-read -x</strong></span> option prints a hex
dump of the wire format DNS message encapsulated in each
<span class="command"><strong>dnstap</strong></span> log entry. [RT #44816]
</p>
</li>
<li class="listitem">
+ <p>
The <span class="command"><strong>host -A</strong></span> option returns most
records for a name, but omits types RRSIG, NSEC and NSEC3.
</p>
</li>
<li class="listitem">
+ <p>
Query logic has been substantially refactored (e.g. query_find
function has been split into smaller functions) for improved
readability, maintainability and testability. [RT #43929]
</p>
</li>
<li class="listitem">
+ <p>
<span class="command"><strong>dnstap</strong></span> now stores both the local and remote
addresses for all messages, instead of only the remote address.
The default output format for <span class="command"><strong>dnstap-read</strong></span> has
listen-on-v6 [ port <integer> ] [ dscp
<integer> ] {
<address_match_element>; ... }; // may occur multiple times
- lmdb-mapsize <sizeval>;
+ lmdb-mapsize <sizeval>; // non-operational
lock-file ( <quoted_string> | none );
maintain-ixfr-base <boolean>; // obsolete
managed-keys-directory <quoted_string>;
}; // may occur multiple times
key-directory <quoted_string>;
lame-ttl <ttlval>;
- lmdb-mapsize <sizeval>;
+ lmdb-mapsize <sizeval>; // non-operational
maintain-ixfr-base <boolean>; // obsolete
managed-keys { <string> <string>
<integer> <integer> <integer>
projects / thirdparty / bind9.git / commitdiff
