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* pr-57699:
  nixos/matrix: add manual section about self-hosting a matrix client and server
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Léo Gaspard 2019-03-16 14:48:39 +01:00
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1
nixos/doc/manual/configuration/configuration.xml
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@ -21,6 +21,7 @@
<xi:include href="xfce.xml" />
<xi:include href="networking.xml" />
<xi:include href="linux-kernel.xml" />
<xi:include href="matrix.xml" />
<xi:include href="../generated/modules.xml" xpointer="xpointer(//section[@id='modules']/*)" />
<xi:include href="profiles.xml" />
<xi:include href="kubernetes.xml" />

197
nixos/doc/manual/configuration/matrix.xml Normal file
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@ -0,0 +1,197 @@
<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-services-matrix">
<title>Matrix</title>
<para>
<link xlink:href="https://matrix.org/">Matrix</link>
is an open standard for interoperable, decentralised, real-time communication over IP.
It can be used to power Instant Messaging, VoIP/WebRTC signalling, Internet of Things communication -
or anywhere you need a standard HTTP API for publishing and subscribing to data whilst tracking the conversation history.
</para>
<para>
This chapter will show you how to set up your own, self-hosted Matrix homeserver using the Synapse reference homeserver,
and how to serve your own copy of the Riot web client.
See the <link xlink:href="https://matrix.org/docs/projects/try-matrix-now.html">Try Matrix Now!</link>
overview page for links to Riot Apps for Android and iOS, desktop clients,
as well as bridges to other networks and other projects around Matrix.
</para>
<section xml:id="module-services-matrix-synapse">
<title>Synapse Homeserver</title>
<para>
<link xlink:href="https://github.com/matrix-org/synapse">Synapse</link>
is the reference homeserver implementation of Matrix from the core development team at matrix.org.
The following configuration example will set up a synapse server for the <literal>example.org</literal>
domain, served from the host <literal>myhostname.example.org</literal>.
For more information, please refer to the
<link xlink:href="https://github.com/matrix-org/synapse#synapse-installation">
installation instructions of Synapse
</link>.
<programlisting>
let
fqdn =
let
join = hostName: domain: hostName + optionalString (domain != null) ".${domain}";
in join config.networking.hostName config.networking.domain;
in {
networking = {
hostName = "myhostname";
domain = "example.org";
};
networking.firewall.allowedTCPPorts = [ 80 443 ];
services.nginx = {
enable = true;
# only recommendedProxySettings and recommendedGzipSettings are strictly required,
# but the rest make sense as well
recommendedTlsSettings = true;
recommendedOptimisation = true;
recommendedGzipSettings = true;
recommendedProxySettings = true;
virtualHosts = {
# This host section can be placed on a different host than the rest,
# i.e. to delegate from the host being accessible as ${config.networking.domain}
# to another host actually running the Matrix homeserver.
"${config.networking.domain}" = {
locations."= /.well-known/matrix/server".extraConfig =
let
# use 443 instead of the default 8448 port to unite
# the client-server and server-server port for simplicity
server = { "m.server" = "${fqdn}:443"; };
in ''
add_header Content-Type application/json;
return 200 '${builtins.toJSON server}';
'';
locations."= /.well-known/matrix/client".extraConfig =
let
client = {
"m.homeserver" = { "base_url" = "https://${fqdn}"; };
"m.identity_server" = { "base_url" = "https://vector.im"; };
};
# ACAO required to allow riot-web on any URL to request this json file
in ''
add_header Content-Type application/json;
add_header Access-Control-Allow-Origin *;
return 200 '${builtins.toJSON client}';
'';
};
# Reverse proxy for Matrix client-server and server-server communication
${fqdn} = {
enableACME = true;
forceSSL = true;
# Or do a redirect instead of the 404, or whatever is appropriate for you.
# But do not put a Matrix Web client here! See the Riot Web section below.
locations."/".extraConfig = ''
return 404;
'';
# forward all Matrix API calls to the synapse Matrix homeserver
locations."/_matrix" = {
proxyPass = "http://[::1]:8008";
};
};
};
};
services.matrix-synapse = {
enable = true;
server_name = config.networking.domain;
listeners = [
{
port = 8008;
bind_address = "::1";
type = "http";
tls = false;
x_forwarded = true;
resources = [
{ names = [ "client" "federation" ]; compress = false; }
];
}
];
};
};
</programlisting>
</para>
<para>
If the <code>A</code> and <code>AAAA</code> DNS records on <literal>example.org</literal>
do not point on the same host as the records for <code>myhostname.example.org</code>,
you can easily move the <code>/.well-known</code> virtualHost section of the code
to the host that is serving <literal>example.org</literal>,
while the rest stays on <literal>myhostname.example.org</literal>
with no other changes required.
This pattern also allows to seamlessly move the homeserver from <literal>myhostname.example.org</literal>
to <literal>myotherhost.example.org</literal> by only changing the <code>/.well-known</code> redirection target.
</para>
<para>
If you want to run a server with public registration by anybody,
you can then enable
<option>services.matrix-synapse.enable_registration = true;</option>.
Otherwise, or you can generate a registration secret with <command>pwgen -s 64 1</command>
and set it with
<option>services.matrix-synapse.registration_shared_secret</option>.
To create a new user or admin,
run the following after you have set the secret and have rebuilt NixOS:
<programlisting>
$ nix run nixpkgs.matrix-synapse
$ register_new_matrix_user -k &lt;your-registration-shared-secret&gt; http://localhost:8008
New user localpart: &lt;your-username&gt;
Password:
Confirm password:
Make admin [no]:
Success!
</programlisting>
In the example, this would create a user with the Matrix Identifier
<literal>@your-username:example.org</literal>.
Note that the registration secret ends up in the nix store and therefore is world-readable
by any user on your machine, so it makes sense to only temporarily activate the
<option>registration_shared_secret</option> option until a better solution for NixOS is in place.
</para>
</section>
<section xml:id="module-services-matrix-riot-web">
<title>Riot Web Client</title>
<para>
<link xlink:href="https://github.com/vector-im/riot-web/">Riot Web</link>
is the reference web client for Matrix and developed by the core team at matrix.org.
The following snippet can be optionally added to the code before to complete the synapse
installation with a web client served at
<code>https://riot.myhostname.example.org</code> and <code>https://riot.example.org</code>.
Alternatively, you can use the hosted copy at
<link xlink:href="https://riot.im/app">https://riot.im/app</link>,
or use other web clients or native client applications.
Due to the <literal>/.well-known</literal> urls set up done above,
many clients should fill in the required connection details automatically
when you enter your Matrix Identifier.
See <link xlink:href="https://matrix.org/docs/projects/try-matrix-now.html">Try Matrix Now!</link>
for a list of existing clients and their supported featureset.
<programlisting>
services.nginx.virtualHosts."riot.${fqdn}" = {
enableACME = true;
forceSSL = true;
serverAliases = [
"riot.${config.networking.domain}"
];
root = pkgs.riot-web;
};
</programlisting>
</para>
<para>
Note that the Riot developers do not recommend running Riot and your Matrix homeserver
on the same fully-qualified domain name for security reasons.
In the example, this means that you should not reuse the <literal>myhostname.example.org</literal>
virtualHost to also serve Riot, but instead serve it on a different subdomain,
like <literal>riot.example.org</literal> in the example.
See the
<link xlink:href="https://github.com/vector-im/riot-web#important-security-note">Riot Important Security Notes</link>
for more information on this subject.
</para>
</section>
</chapter>

11
nixos/doc/manual/release-notes/rl-1903.xml
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@ -469,6 +469,8 @@
and will be <link xlink:href="https://matrix.org/blog/2019/02/05/synapse-0-99-0/">the last version to accept self-signed certificates</link>.
As such, it is now recommended to use a proper certificate verified by a
root CA (for example Let's Encrypt).
The new <link linkend="module-services-matrix">manual chapter on Matrix</link> contains a working example of using nginx as a reverse proxy
in front of <literal>matrix-synapse</literal>, using Let's Encrypt certificates.
</para>
</listitem>
<listitem>
@ -553,6 +555,15 @@
of maintainers.
</para>
</listitem>
<listitem>
<para>
The manual gained a
<link linkend="module-services-matrix">
new chapter on self-hosting <literal>matrix-synapse</literal> and <literal>riot-web</literal>
</link>, the most prevalent server and client implementations for the
<link xlink:href="https://matrix.org/">Matrix</link> federated communication network.
</para>
</listitem>
<listitem>
<para>
The astah-community package was removed from nixpkgs due to it being discontinued and the downloads not being available anymore.