lego/dns/exec/index.html
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Installation
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CLI
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General Instructions
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Obtain a Certificate
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Renew a Certificate
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Options
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Library
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Writing a Challenge Solver
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DNS Providers
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Akamai EdgeDNS
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Alibaba Cloud DNS
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all-inkl
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Amazon Lightsail
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Amazon Route 53
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ArvanCloud
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<li data-nav-id="/lego/dns/auroradns/" title="Aurora DNS" class="dd-item ">
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Aurora DNS
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</a>
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<li data-nav-id="/lego/dns/autodns/" title="Autodns" class="dd-item ">
<a href="/lego/dns/autodns/">
Autodns
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<li data-nav-id="/lego/dns/azure/" title="Azure (deprecated)" class="dd-item ">
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Azure (deprecated)
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<li data-nav-id="/lego/dns/azuredns/" title="Azure DNS" class="dd-item ">
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Azure DNS
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<li data-nav-id="/lego/dns/bindman/" title="Bindman" class="dd-item ">
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Bindman
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Bluecat
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Brandit
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Bunny
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<li data-nav-id="/lego/dns/checkdomain/" title="Checkdomain" class="dd-item ">
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Checkdomain
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<li data-nav-id="/lego/dns/civo/" title="Civo" class="dd-item ">
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Civo
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Cloud.ru
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</a>
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<li data-nav-id="/lego/dns/clouddns/" title="CloudDNS" class="dd-item ">
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CloudDNS
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Cloudflare
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<li data-nav-id="/lego/dns/cloudns/" title="ClouDNS" class="dd-item ">
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ClouDNS
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<li data-nav-id="/lego/dns/cloudxns/" title="CloudXNS" class="dd-item ">
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CloudXNS
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<li data-nav-id="/lego/dns/conoha/" title="ConoHa" class="dd-item ">
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ConoHa
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Constellix
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</a>
</li>
<li data-nav-id="/lego/dns/cpanel/" title="CPanel/WHM" class="dd-item ">
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CPanel/WHM
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</a>
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<li data-nav-id="/lego/dns/derak/" title="Derak Cloud" class="dd-item ">
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Derak Cloud
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</a>
</li>
<li data-nav-id="/lego/dns/desec/" title="deSEC.io" class="dd-item ">
<a href="/lego/dns/desec/">
deSEC.io
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</a>
</li>
<li data-nav-id="/lego/dns/designate/" title="Designate DNSaaS for Openstack" class="dd-item ">
<a href="/lego/dns/designate/">
Designate DNSaaS for Openstack
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</a>
</li>
<li data-nav-id="/lego/dns/digitalocean/" title="Digital Ocean" class="dd-item ">
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Digital Ocean
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</a>
</li>
<li data-nav-id="/lego/dns/dnsmadeeasy/" title="DNS Made Easy" class="dd-item ">
<a href="/lego/dns/dnsmadeeasy/">
DNS Made Easy
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</a>
</li>
<li data-nav-id="/lego/dns/dnshomede/" title="dnsHome.de" class="dd-item ">
<a href="/lego/dns/dnshomede/">
dnsHome.de
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</a>
</li>
<li data-nav-id="/lego/dns/dnsimple/" title="DNSimple" class="dd-item ">
<a href="/lego/dns/dnsimple/">
DNSimple
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</a>
</li>
<li data-nav-id="/lego/dns/dnspod/" title="DNSPod (deprecated)" class="dd-item ">
<a href="/lego/dns/dnspod/">
DNSPod (deprecated)
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</a>
</li>
<li data-nav-id="/lego/dns/dode/" title="Domain Offensive (do.de)" class="dd-item ">
<a href="/lego/dns/dode/">
Domain Offensive (do.de)
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</a>
</li>
<li data-nav-id="/lego/dns/domeneshop/" title="Domeneshop" class="dd-item ">
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Domeneshop
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</a>
</li>
<li data-nav-id="/lego/dns/dreamhost/" title="DreamHost" class="dd-item ">
<a href="/lego/dns/dreamhost/">
DreamHost
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</a>
</li>
<li data-nav-id="/lego/dns/duckdns/" title="Duck DNS" class="dd-item ">
<a href="/lego/dns/duckdns/">
Duck DNS
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</a>
</li>
<li data-nav-id="/lego/dns/dyn/" title="Dyn" class="dd-item ">
<a href="/lego/dns/dyn/">
Dyn
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</a>
</li>
<li data-nav-id="/lego/dns/dynu/" title="Dynu" class="dd-item ">
<a href="/lego/dns/dynu/">
Dynu
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</a>
</li>
<li data-nav-id="/lego/dns/easydns/" title="EasyDNS" class="dd-item ">
<a href="/lego/dns/easydns/">
EasyDNS
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</a>
</li>
<li data-nav-id="/lego/dns/efficientip/" title="Efficient IP" class="dd-item ">
<a href="/lego/dns/efficientip/">
Efficient IP
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</a>
</li>
<li data-nav-id="/lego/dns/epik/" title="Epik" class="dd-item ">
<a href="/lego/dns/epik/">
Epik
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</a>
</li>
<li data-nav-id="/lego/dns/exoscale/" title="Exoscale" class="dd-item ">
<a href="/lego/dns/exoscale/">
Exoscale
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</a>
</li>
<li data-nav-id="/lego/dns/exec/" title="External program" class="dd-item active">
<a href="/lego/dns/exec/">
External program
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</a>
</li>
<li data-nav-id="/lego/dns/freemyip/" title="freemyip.com" class="dd-item ">
<a href="/lego/dns/freemyip/">
freemyip.com
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</a>
</li>
<li data-nav-id="/lego/dns/gcore/" title="G-Core" class="dd-item ">
<a href="/lego/dns/gcore/">
G-Core
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</a>
</li>
<li data-nav-id="/lego/dns/gandi/" title="Gandi" class="dd-item ">
<a href="/lego/dns/gandi/">
Gandi
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</a>
</li>
<li data-nav-id="/lego/dns/gandiv5/" title="Gandi Live DNS (v5)" class="dd-item ">
<a href="/lego/dns/gandiv5/">
Gandi Live DNS (v5)
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</a>
</li>
<li data-nav-id="/lego/dns/glesys/" title="Glesys" class="dd-item ">
<a href="/lego/dns/glesys/">
Glesys
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</a>
</li>
<li data-nav-id="/lego/dns/godaddy/" title="Go Daddy" class="dd-item ">
<a href="/lego/dns/godaddy/">
Go Daddy
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</a>
</li>
<li data-nav-id="/lego/dns/gcloud/" title="Google Cloud" class="dd-item ">
<a href="/lego/dns/gcloud/">
Google Cloud
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</a>
</li>
<li data-nav-id="/lego/dns/googledomains/" title="Google Domains" class="dd-item ">
<a href="/lego/dns/googledomains/">
Google Domains
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</a>
</li>
<li data-nav-id="/lego/dns/hetzner/" title="Hetzner" class="dd-item ">
<a href="/lego/dns/hetzner/">
Hetzner
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</a>
</li>
<li data-nav-id="/lego/dns/hostingde/" title="Hosting.de" class="dd-item ">
<a href="/lego/dns/hostingde/">
Hosting.de
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</a>
</li>
<li data-nav-id="/lego/dns/hosttech/" title="Hosttech" class="dd-item ">
<a href="/lego/dns/hosttech/">
Hosttech
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</a>
</li>
<li data-nav-id="/lego/dns/httpreq/" title="HTTP request" class="dd-item ">
<a href="/lego/dns/httpreq/">
HTTP request
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</a>
</li>
<li data-nav-id="/lego/dns/httpnet/" title="http.net" class="dd-item ">
<a href="/lego/dns/httpnet/">
http.net
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</a>
</li>
<li data-nav-id="/lego/dns/hurricane/" title="Hurricane Electric DNS" class="dd-item ">
<a href="/lego/dns/hurricane/">
Hurricane Electric DNS
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</a>
</li>
<li data-nav-id="/lego/dns/hyperone/" title="HyperOne" class="dd-item ">
<a href="/lego/dns/hyperone/">
HyperOne
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</a>
</li>
<li data-nav-id="/lego/dns/ibmcloud/" title="IBM Cloud (SoftLayer)" class="dd-item ">
<a href="/lego/dns/ibmcloud/">
IBM Cloud (SoftLayer)
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</a>
</li>
<li data-nav-id="/lego/dns/iijdpf/" title="IIJ DNS Platform Service" class="dd-item ">
<a href="/lego/dns/iijdpf/">
IIJ DNS Platform Service
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</a>
</li>
<li data-nav-id="/lego/dns/infoblox/" title="Infoblox" class="dd-item ">
<a href="/lego/dns/infoblox/">
Infoblox
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</a>
</li>
<li data-nav-id="/lego/dns/infomaniak/" title="Infomaniak" class="dd-item ">
<a href="/lego/dns/infomaniak/">
Infomaniak
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</a>
</li>
<li data-nav-id="/lego/dns/iij/" title="Internet Initiative Japan" class="dd-item ">
<a href="/lego/dns/iij/">
Internet Initiative Japan
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</a>
</li>
<li data-nav-id="/lego/dns/internetbs/" title="Internet.bs" class="dd-item ">
<a href="/lego/dns/internetbs/">
Internet.bs
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</a>
</li>
<li data-nav-id="/lego/dns/inwx/" title="INWX" class="dd-item ">
<a href="/lego/dns/inwx/">
INWX
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</a>
</li>
<li data-nav-id="/lego/dns/ionos/" title="Ionos" class="dd-item ">
<a href="/lego/dns/ionos/">
Ionos
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</a>
</li>
<li data-nav-id="/lego/dns/ipv64/" title="IPv64" class="dd-item ">
<a href="/lego/dns/ipv64/">
IPv64
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</a>
</li>
<li data-nav-id="/lego/dns/iwantmyname/" title="iwantmyname" class="dd-item ">
<a href="/lego/dns/iwantmyname/">
iwantmyname
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</a>
</li>
<li data-nav-id="/lego/dns/joker/" title="Joker" class="dd-item ">
<a href="/lego/dns/joker/">
Joker
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/acme-dns/" title="Joohoi&#39;s ACME-DNS" class="dd-item ">
<a href="/lego/dns/acme-dns/">
Joohoi&#39;s ACME-DNS
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/liara/" title="Liara" class="dd-item ">
<a href="/lego/dns/liara/">
Liara
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</a>
</li>
<li data-nav-id="/lego/dns/linode/" title="Linode (v4)" class="dd-item ">
<a href="/lego/dns/linode/">
Linode (v4)
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/liquidweb/" title="Liquid Web" class="dd-item ">
<a href="/lego/dns/liquidweb/">
Liquid Web
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/loopia/" title="Loopia" class="dd-item ">
<a href="/lego/dns/loopia/">
Loopia
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/luadns/" title="LuaDNS" class="dd-item ">
<a href="/lego/dns/luadns/">
LuaDNS
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/mailinabox/" title="Mail-in-a-Box" class="dd-item ">
<a href="/lego/dns/mailinabox/">
Mail-in-a-Box
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</a>
</li>
<li data-nav-id="/lego/dns/manual/" title="Manual" class="dd-item ">
<a href="/lego/dns/manual/">
Manual
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</a>
</li>
<li data-nav-id="/lego/dns/metaname/" title="Metaname" class="dd-item ">
<a href="/lego/dns/metaname/">
Metaname
<i class="fas fa-check read-icon"></i>
</a>
</li>
<li data-nav-id="/lego/dns/mydnsjp/" title="MyDNS.jp" class="dd-item ">
<a href="/lego/dns/mydnsjp/">
MyDNS.jp
<i class="fas fa-check read-icon"></i>
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<a href='/lego/'>Welcome</a> > <a href='/lego/dns/'>DNS Providers</a> > External program
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<ul>
<li><a href="#base-configuration">Base Configuration</a></li>
<li><a href="#additional-configuration">Additional Configuration</a></li>
<li><a href="#description">Description</a></li>
<li><a href="#commands">Commands</a>
<ul>
<li><a href="#present">Present</a></li>
<li><a href="#cleanup">Cleanup</a></li>
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<h1>
External program
</h1>
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<p>Solving the DNS-01 challenge using an external program.</p>
<ul>
<li>Code: <code>exec</code></li>
<li>Since: v0.5.0</li>
</ul>
<p>Here is an example bash command using the External program provider:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl"><span class="nv">EXEC_PATH</span><span class="o">=</span>/the/path/to/myscript.sh <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span>lego --email you@example.com --dns <span class="nb">exec</span> --domains my.example.org run
</span></span></code></pre></div><h2 id="base-configuration">Base Configuration</h2>
<table>
<thead>
<tr>
<th>Environment Variable Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>EXEC_MODE</code></td>
<td><code>RAW</code>, none</td>
</tr>
<tr>
<td><code>EXEC_PATH</code></td>
<td>The path of the the external program.</td>
</tr>
</tbody>
</table>
<h2 id="additional-configuration">Additional Configuration</h2>
<table>
<thead>
<tr>
<th>Environment Variable Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>EXEC_POLLING_INTERVAL</code></td>
<td>Time between DNS propagation check.</td>
</tr>
<tr>
<td><code>EXEC_PROPAGATION_TIMEOUT</code></td>
<td>Maximum waiting time for DNS propagation.</td>
</tr>
<tr>
<td><code>EXEC_SEQUENCE_INTERVAL</code></td>
<td>Time between sequential requests.</td>
</tr>
</tbody>
</table>
<h2 id="description">Description</h2>
<p>The file name of the external program is specified in the environment variable <code>EXEC_PATH</code>.</p>
<p>When it is run by lego, three command-line parameters are passed to it:
The action (&ldquo;present&rdquo; or &ldquo;cleanup&rdquo;), the fully-qualified domain name and the value for the record.</p>
<p>For example, requesting a certificate for the domain &lsquo;my.example.org&rsquo; can be achieved by calling lego as follows:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl"><span class="nv">EXEC_PATH</span><span class="o">=</span>./update-dns.sh <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span> lego --email you@example.com <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span> --dns <span class="nb">exec</span> <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span> --domains my.example.org run
</span></span></code></pre></div><p>It will then call the program &lsquo;./update-dns.sh&rsquo; with like this:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">./update-dns.sh <span class="s2">&#34;present&#34;</span> <span class="s2">&#34;_acme-challenge.my.example.org.&#34;</span> <span class="s2">&#34;MsijOYZxqyjGnFGwhjrhfg-Xgbl5r68WPda0J9EgqqI&#34;</span>
</span></span></code></pre></div><p>The program then needs to make sure the record is inserted.
When it returns an error via a non-zero exit code, lego aborts.</p>
<p>When the record is to be removed again,
the program is called with the first command-line parameter set to <code>cleanup</code> instead of <code>present</code>.</p>
<p>If you want to use the raw domain, token, and keyAuth values with your program, you can set <code>EXEC_MODE=RAW</code>:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl"><span class="nv">EXEC_MODE</span><span class="o">=</span>RAW <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span><span class="nv">EXEC_PATH</span><span class="o">=</span>./update-dns.sh <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span> lego --email you@example.com <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span> --dns <span class="nb">exec</span> <span class="se">\
</span></span></span><span class="line"><span class="cl"><span class="se"></span> --domains my.example.org run
</span></span></code></pre></div><p>It will then call the program <code>./update-dns.sh</code> like this:</p>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl">./update-dns.sh <span class="s2">&#34;present&#34;</span> <span class="s2">&#34;--&#34;</span> <span class="s2">&#34;my.example.org.&#34;</span> <span class="s2">&#34;some-token&#34;</span> <span class="s2">&#34;KxAy-J3NwUmg9ZQuM-gP_Mq1nStaYSaP9tYQs5_-YsE.ksT-qywTd8058G-SHHWA3RAN72Pr0yWtPYmmY5UBpQ8&#34;</span>
</span></span></code></pre></div><h2 id="commands">Commands</h2>
<div class="notices note" ><p>The <code>--</code> is because the token MAY start with a <code>-</code>, and the called program may try and interpret a <code>-</code> as indicating a flag.
In the case of urfave, which is commonly used,
you can use the <code>--</code> delimiter to specify the start of positional arguments, and handle such a string safely.</p>
</div>
<h3 id="present">Present</h3>
<table>
<thead>
<tr>
<th>Mode</th>
<th>Command</th>
</tr>
</thead>
<tbody>
<tr>
<td>default</td>
<td><code>myprogram present &lt;FQDN&gt; &lt;record&gt;</code></td>
</tr>
<tr>
<td><code>RAW</code></td>
<td><code>myprogram present -- &lt;domain&gt; &lt;token&gt; &lt;key_auth&gt;</code></td>
</tr>
</tbody>
</table>
<h3 id="cleanup">Cleanup</h3>
<table>
<thead>
<tr>
<th>Mode</th>
<th>Command</th>
</tr>
</thead>
<tbody>
<tr>
<td>default</td>
<td><code>myprogram cleanup &lt;FQDN&gt; &lt;record&gt;</code></td>
</tr>
<tr>
<td><code>RAW</code></td>
<td><code>myprogram cleanup -- &lt;domain&gt; &lt;token&gt; &lt;key_auth&gt;</code></td>
</tr>
</tbody>
</table>
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