mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-17 23:36:17 +01:00
96 lines
2.7 KiB
XML
96 lines
2.7 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
version="5.0"
|
|
xml:id="module-security-acme">
|
|
|
|
<title>SSL/TLS Certificates with ACME</title>
|
|
|
|
<para>NixOS supports automatic domain validation & certificate
|
|
retrieval and renewal using the ACME protocol. This is currently only
|
|
implemented by and for Let's Encrypt. The alternative ACME client
|
|
<literal>simp_le</literal> is used under the hood.</para>
|
|
|
|
<section><title>Prerequisites</title>
|
|
|
|
<para>You need to have a running HTTP server for verification. The server must
|
|
have a webroot defined that can serve
|
|
<filename>.well-known/acme-challenge</filename>. This directory must be
|
|
writeable by the user that will run the ACME client.</para>
|
|
|
|
<para>For instance, this generic snippet could be used for Nginx:
|
|
|
|
<programlisting>
|
|
http {
|
|
server {
|
|
server_name _;
|
|
listen 80;
|
|
listen [::]:80;
|
|
|
|
location /.well-known/acme-challenge {
|
|
root /var/www/challenges;
|
|
}
|
|
|
|
location / {
|
|
return 301 https://$host$request_uri;
|
|
}
|
|
}
|
|
}
|
|
</programlisting>
|
|
</para>
|
|
|
|
</section>
|
|
|
|
<section><title>Configuring</title>
|
|
|
|
<para>To enable ACME certificate retrieval & renewal for a certificate for
|
|
<literal>foo.example.com</literal>, add the following in your
|
|
<filename>configuration.nix</filename>:
|
|
|
|
<programlisting>
|
|
security.acme.certs."foo.example.com" = {
|
|
webroot = "/var/www/challenges";
|
|
email = "foo@example.com";
|
|
};
|
|
</programlisting>
|
|
</para>
|
|
|
|
<para>The private key <filename>key.pem</filename> and certificate
|
|
<filename>fullchain.pem</filename> will be put into
|
|
<filename>/var/lib/acme/foo.example.com</filename>. The target directory can
|
|
be configured with the option <literal>security.acme.directory</literal>.
|
|
</para>
|
|
|
|
<para>Refer to <xref linkend="ch-options" /> for all available configuration
|
|
options for the <literal>security.acme</literal> module.</para>
|
|
|
|
</section>
|
|
|
|
<section><title>Using ACME certificates in Nginx</title>
|
|
<para>NixOS supports fetching ACME certificates for you by setting
|
|
<literal>enableACME = true;</literal> in a virtualHost config. We
|
|
first create self-signed placeholder certificates in place of the
|
|
real ACME certs. The placeholder certs are overwritten when the ACME
|
|
certs arrive. For <literal>foo.example.com</literal> the config would
|
|
look like.
|
|
</para>
|
|
|
|
<programlisting>
|
|
services.nginx = {
|
|
enable = true;
|
|
virtualHosts = {
|
|
"foo.example.com" = {
|
|
forceSSL = true;
|
|
enableACME = true;
|
|
locations."/" = {
|
|
root = "/var/www";
|
|
};
|
|
};
|
|
};
|
|
}
|
|
</programlisting>
|
|
|
|
<para>At the moment you still have to restart Nginx after the ACME
|
|
certs arrive.</para>
|
|
</section>
|
|
</chapter>
|