mirror of
https://github.com/1f349/dendrite.git
synced 2024-12-23 08:44:11 +00:00
94 lines
4.2 KiB
Markdown
94 lines
4.2 KiB
Markdown
|
---
|
||
|
|
title: Setting up the domain
|
||
|
|
parent: Installation
|
||
|
|
nav_order: 2
|
||
|
|
permalink: /installation/domainname
|
||
|
|
---
|
||
|
|
|
||
|
|
# Setting up the domain
|
||
|
|
|
||
|
|
Every Matrix server deployment requires a server name which uniquely identifies it. For
|
||
|
|
example, if you are using the server name `example.com`, then your users will have usernames
|
||
|
|
that take the format `@user:example.com`.
|
||
|
|
|
||
|
|
For federation to work, the server name must be resolvable by other homeservers on the internet
|
||
|
|
— that is, the domain must be registered and properly configured with the relevant DNS records.
|
||
|
|
|
||
|
|
Matrix servers discover each other when federating using the following methods:
|
||
|
|
|
||
|
|
1. If a well-known delegation exists on `example.com`, use the path server from the
|
||
|
|
well-known file to connect to the remote homeserver;
|
||
|
|
2. If a DNS SRV delegation exists on `example.com`, use the hostname and port from the DNS SRV
|
||
|
|
record to connect to the remote homeserver;
|
||
|
|
3. If neither well-known or DNS SRV delegation are configured, attempt to connect to the remote
|
||
|
|
homeserver by connecting to `example.com` port TCP/8448 using HTTPS.
|
||
|
|
|
||
|
|
## TLS certificates
|
||
|
|
|
||
|
|
Matrix federation requires that valid TLS certificates are present on the domain. You must
|
||
|
|
obtain certificates from a publicly accepted Certificate Authority (CA). [LetsEncrypt](https://letsencrypt.org)
|
||
|
|
is an example of such a CA that can be used. Self-signed certificates are not suitable for
|
||
|
|
federation and will typically not be accepted by other homeservers.
|
||
|
|
|
||
|
|
A common practice to help ease the management of certificates is to install a reverse proxy in
|
||
|
|
front of Dendrite which manages the TLS certificates and HTTPS proxying itself. Software such as
|
||
|
|
[NGINX](https://www.nginx.com) and [HAProxy](http://www.haproxy.org) can be used for the task.
|
||
|
|
Although the finer details of configuring these are not described here, you must reverse proxy
|
||
|
|
all `/_matrix` paths to your Dendrite server.
|
||
|
|
|
||
|
|
It is possible for the reverse proxy to listen on the standard HTTPS port TCP/443 so long as your
|
||
|
|
domain delegation is configured to point to port TCP/443.
|
||
|
|
|
||
|
|
## Delegation
|
||
|
|
|
||
|
|
Delegation allows you to specify the server name and port that your Dendrite installation is
|
||
|
|
reachable at, or to host the Dendrite server at a different server name to the domain that
|
||
|
|
is being delegated.
|
||
|
|
|
||
|
|
For example, if your Dendrite installation is actually reachable at `matrix.example.com` port 8448,
|
||
|
|
you will be able to delegate from `example.com` to `matrix.example.com` so that your users will have
|
||
|
|
`@user:example.com` user names instead of `@user:matrix.example.com` usernames.
|
||
|
|
|
||
|
|
Delegation can be performed in one of two ways:
|
||
|
|
|
||
|
|
* **Well-known delegation**: A well-known text file is served over HTTPS on the domain name
|
||
|
|
that you want to use, pointing to your server on `matrix.example.com` port 8448;
|
||
|
|
* **DNS SRV delegation**: A DNS SRV record is created on the domain name that you want to
|
||
|
|
use, pointing to your server on `matrix.example.com` port TCP/8448.
|
||
|
|
|
||
|
|
If you are using a reverse proxy to forward `/_matrix` to Dendrite, your well-known or DNS SRV
|
||
|
|
delegation must refer to the hostname and port that the reverse proxy is listening on instead.
|
||
|
|
|
||
|
|
Well-known delegation is typically easier to set up and usually preferred. However, you can use
|
||
|
|
either or both methods to delegate. If you configure both methods of delegation, it is important
|
||
|
|
that they both agree and refer to the same hostname and port.
|
||
|
|
|
||
|
|
## Well-known delegation
|
||
|
|
|
||
|
|
Using well-known delegation requires that you are running a web server at `example.com` which
|
||
|
|
is listening on the standard HTTPS port TCP/443.
|
||
|
|
|
||
|
|
Assuming that your Dendrite installation is listening for HTTPS connections at `matrix.example.com`
|
||
|
|
on port 8448, the delegation file must be served at `https://example.com/.well-known/matrix/server`
|
||
|
|
and contain the following JSON document:
|
||
|
|
|
||
|
|
```json
|
||
|
|
{
|
||
|
|
"m.server": "https://matrix.example.com:8448"
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
## DNS SRV delegation
|
||
|
|
|
||
|
|
Using DNS SRV delegation requires creating DNS SRV records on the `example.com` zone which
|
||
|
|
refer to your Dendrite installation.
|
||
|
|
|
||
|
|
Assuming that your Dendrite installation is listening for HTTPS connections at `matrix.example.com`
|
||
|
|
port 8448, the DNS SRV record must have the following fields:
|
||
|
|
|
||
|
|
* Name: `@` (or whichever term your DNS provider uses to signal the root)
|
||
|
|
* Service: `_matrix`
|
||
|
|
* Protocol: `_tcp`
|
||
|
|
* Port: `8448`
|
||
|
|
* Target: `matrix.example.com`
|