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div class="refentry" lang="en">
0N/A<
div class="refnamediv">
0N/A<
p><
span class="application">dnssec-coverage</
span> — checks future DNSKEY coverage for a zone</
p>
0N/A<
div class="refsynopsisdiv">
0N/A<
div class="cmdsynopsis"><
p><
code class="command">dnssec-coverage</
code> [<
code class="option">-K <
em class="replaceable"><
code>directory</
code></
em></
code>] [<
code class="option">-l <
em class="replaceable"><
code>length</
code></
em></
code>] [<
code class="option">-f <
em class="replaceable"><
code>file</
code></
em></
code>] [<
code class="option">-d <
em class="replaceable"><
code>DNSKEY TTL</
code></
em></
code>] [<
code class="option">-m <
em class="replaceable"><
code>max TTL</
code></
em></
code>] [<
code class="option">-r <
em class="replaceable"><
code>interval</
code></
em></
code>] [<
code class="option">-c <
em class="replaceable"><
code>compilezone path</
code></
em></
code>] [<
code class="option">-k</
code>] [<
code class="option">-z</
code>] [zone]</
p></
div>
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2543411"></
a><
h2>DESCRIPTION</
h2>
0N/A<
p><
span><
strong class="command">dnssec-coverage</
strong></
span>
0N/A verifies that the DNSSEC keys for a given zone or a set of zones
0N/A have timing metadata set properly to ensure no future lapses in DNSSEC
0N/A If <
code class="option">zone</
code> is specified, then keys found in
0N/A the key repository matching that zone are scanned, and an ordered
0N/A list is generated of the events scheduled for that key (
i.e.,
0N/A publication, activation, inactivation, deletion). The list of
0N/A events is walked in order of occurrence. Warnings are generated
0N/A if any event is scheduled which could cause the zone to enter a
0N/A state in which validation failures might occur: for example, if
0N/A the number of published or active keys for a given algorithm drops
0N/A to zero, or if a key is deleted from the zone too soon after a new
0N/A key is rolled, and cached data signed by the prior key has not had
0N/A time to expire from resolver caches.
0N/A If <
code class="option">zone</
code> is not specified, then all keys in the
0N/A key repository will be scanned, and all zones for which there are
0N/A keys will be analyzed. (Note: This method of reporting is only
0N/A accurate if all the zones that have keys in a given repository
0N/A share the same TTL parameters.)
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2543435"></
a><
h2>OPTIONS</
h2>
0N/A<
div class="variablelist"><
dl>
0N/A<
dt><
span class="term">-K <
em class="replaceable"><
code>directory</
code></
em></
span></
dt>
0N/A Sets the directory in which keys can be found. Defaults to the
0N/A current working directory.
0N/A<
dt><
span class="term">-f <
em class="replaceable"><
code>file</
code></
em></
span></
dt>
0N/A If a <
code class="option">file</
code> is specified, then the zone is
0N/A read from that file; the largest TTL and the DNSKEY TTL are
0N/A determined directly from the zone data, and the
0N/A <
code class="option">-m</
code> and <
code class="option">-d</
code> options do
0N/A not need to be specified on the command line.
0N/A<
dt><
span class="term">-l <
em class="replaceable"><
code>duration</
code></
em></
span></
dt>
0N/A The length of time to check for DNSSEC coverage. Key events
0N/A scheduled further into the future than <
code class="option">duration</
code>
0N/A will be ignored, and assumed to be correct.
0N/A The value of <
code class="option">duration</
code> can be set in seconds,
0N/A or in larger units of time by adding a suffix: 'mi' for minutes,
0N/A 'h' for hours, 'd' for days, 'w' for weeks, 'mo' for months,
0N/A<
dt><
span class="term">-m <
em class="replaceable"><
code>maximum TTL</
code></
em></
span></
dt>
0N/A Sets the value to be used as the maximum TTL for the zone or
0N/A zones being analyzed when determining whether there is a
0N/A possibility of validation failure. When a zone-signing key is
0N/A deactivated, there must be enough time for the record in the
0N/A zone with the longest TTL to have expired from resolver caches
0N/A before that key can be purged from the DNSKEY RRset. If that
0N/A condition does not apply, a warning will be generated.
0N/A The length of the TTL can be set in seconds, or in larger units
0N/A of time by adding a suffix: 'mi' for minutes, 'h' for hours,
0N/A 'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
0N/A This option is mandatory unless the <
code class="option">-f</
code> has
0N/A been used to specify a zone file. (If <
code class="option">-f</
code> has
0N/A been specified, this option may still be used; it will overrde
0N/A the value found in the file.)
0N/A<
dt><
span class="term">-d <
em class="replaceable"><
code>DNSKEY TTL</
code></
em></
span></
dt>
0N/A Sets the value to be used as the DNSKEY TTL for the zone or
0N/A zones being analyzed when determining whether there is a
0N/A possibility of validation failure. When a key is rolled (that
0N/A is, replaced with a new key), there must be enough time
0N/A for the old DNSKEY RRset to have expired from resolver caches
0N/A before the new key is activated and begins generating
0N/A signatures. If that condition does not apply, a warning
0N/A The length of the TTL can be set in seconds, or in larger units
0N/A of time by adding a suffix: 'mi' for minutes, 'h' for hours,
0N/A 'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
0N/A This option is mandatory unless the <
code class="option">-f</
code> has
0N/A been used to specify a zone file, or a default key TTL was
0N/A set with the <
code class="option">-L</
code> to
0N/A <
span><
strong class="command">dnssec-keygen</
strong></
span>. (If either of those is true,
0N/A this option may still be used; it will overrde the value found
0N/A in the zone or key file.)
0N/A<
dt><
span class="term">-r <
em class="replaceable"><
code>resign interval</
code></
em></
span></
dt>
0N/A Sets the value to be used as the resign interval for the zone
0N/A or zones being analyzed when determining whether there is a
0N/A possibility of validation failure. This value defaults to
0N/A 22.5 days, which is also the default in
0N/A <
span><
strong class="command">named</
strong></
span>. However, if it has been changed
0N/A by the <
code class="option">sig-validity-interval</
code> option in
0N/A The length of the interval can be set in seconds, or in larger
0N/A units of time by adding a suffix: 'mi' for minutes, 'h' for hours,
0N/A 'd' for days, 'w' for weeks, 'mo' for months, 'y' for years.
0N/A<
dt><
span class="term">-k</
span></
dt>
0N/A Only check KSK coverage; ignore ZSK events. Cannot be
0N/A used with <
code class="option">-z</
code>.
0N/A<
dt><
span class="term">-z</
span></
dt>
0N/A Only check ZSK coverage; ignore KSK events. Cannot be
0N/A used with <
code class="option">-k</
code>.
0N/A<
dt><
span class="term">-c <
em class="replaceable"><
code>compilezone path</
code></
em></
span></
dt>
0N/A Specifies a path to a <
span><
strong class="command">named-compilezone</
strong></
span> binary.
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2543736"></
a><
h2>SEE ALSO</
h2>
0N/A <
span class="citerefentry"><
span class="refentrytitle">dnssec-checkds</
span>(8)</
span>,
0N/A <
span class="citerefentry"><
span class="refentrytitle">dnssec-dsfromkey</
span>(8)</
span>,
0N/A <
span class="citerefentry"><
span class="refentrytitle">dnssec-keygen</
span>(8)</
span>,
0N/A <
span class="citerefentry"><
span class="refentrytitle">dnssec-signzone</
span>(8)</
span>
0N/A<
div class="refsect1" lang="en">
0N/A<
a name="id2543780"></
a><
h2>AUTHOR</
h2>
0N/A<
p><
span class="corpauthor">Internet Systems Consortium</
span>