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Documented acme preferred_chain and profile directives. #205

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Nov 19, 2025
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Documented acme preferred_chain and profile directives. #205

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42 changes: 41 additions & 1 deletion xml/en/docs/http/ngx_http_acme_module.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
<module name="Module ngx_http_acme_module"
link="/en/docs/http/ngx_http_acme_module.html"
lang="en"
rev="2">
rev="3">

<section id="summary">

Expand Down Expand Up @@ -227,6 +227,46 @@ base64url</link>.
</directive>


<directive name="preferred_chain">
<syntax><value>name</value></syntax>
<default />
<context>acme_issuer</context>
<appeared-in>0.3.0</appeared-in>

<para>
Specifies the preferred certificate chain.
</para>

<para>
If the ACME server offers multiple certificate chains,
prefer the chain with the topmost certificate issued from the
Subject Common Name <value>name</value>.
If there are no matches, the default chain will be used.
</para>

</directive>


<directive name="profile">
<syntax><value>name</value> [<literal>require</literal>]</syntax>
<default />
<context>acme_issuer</context>
<appeared-in>0.3.0</appeared-in>

<para>
Requests the
<link url="https://datatracker.ietf.org/doc/html/draft-ietf-acme-profiles">
certificate profile</link> <value>name</value> from the ACME server.
</para>

<para>
The <literal>require</literal> parameter will cause certificate renewals
to fail if the server does not support the specified profile.
</para>

</directive>


<directive name="ssl_trusted_certificate">
<syntax><value>file</value></syntax>
<default/>
Expand Down