matrix-docker-ansible-deploy/docs/configuring-playbook-own-webserver.md

Using your own webserver, instead of this playbook's nginx proxy (optional, advanced)

Note: the playbook is in the process of moving to Traefik. The documentation below should be correct, but things will change soon.

By default, this playbook installs its own nginx webserver (called matrix-nginx-proxy, in a Docker container) which listens on ports 80 and 443. If that's alright, you can skip this.

If you don't want this playbook's nginx webserver to take over your server's 80/443 ports like that, and you'd like to use your own webserver (be it nginx, Apache, Varnish Cache, etc.), you can.

There are 2 ways you can go about it, if you'd like to use your own webserver:

• Method 1: Disabling the integrated nginx reverse-proxy webserver

• Method 2: Fronting the integrated nginx reverse-proxy webserver with another reverse-proxy

Method 1: Disabling the integrated nginx reverse-proxy webserver

This method is about completely disabling the integrated nginx reverse-proxy webserver and replicating its behavior using another webserver.

If that other webserver is nginx, you'd be able to include configuration files generated by the playbook into your nginx webserver.

If you'd like to use another webserver (not nginx), you'd need to do things manually. We have examples for other webservers below.

For an alternative (which keeps matrix-nginx-proxy around and connects your other reverse-proxy with it), make sure to check Method #2.

Preparation

No matter which external webserver you decide to go with, you'll need to:

1. Make sure your web server user (something like http, apache, www-data, nginx) is part of the matrix group. You should run something like this: usermod -a -G matrix nginx. This allows your webserver user to access files owned by the matrix group. When using an external nginx webserver, this allows it to read configuration files from /matrix/nginx-proxy/conf.d. When using another server, it would make other files, such as /matrix/static-files/.well-known, accessible to it.

2. Edit your configuration file (inventory/host_vars/matrix.<your-domain>/vars.yml)

   • to disable the integrated nginx server:

     matrix_nginx_proxy_enabled: false
     

   • if using an external server on another host, add the <service>_http_host_bind_port or <service>_http_bind_port variables for the services that will be exposed by the external server on the other host. The actual name of the variable is listed in the roles/<service>/defaults/vars.yml file for each service. Most variables follow the <service>_http_host_bind_port format.

     These variables will make Docker expose the ports on all network interfaces instead of localhost only. Keep in mind that there are some security concerns if you simply proxy everything.

     Here are the variables required for the default configuration (Synapse and Element)

     trix_synapse_reverse_proxy_companion_container_client_api_host_bind_port: '0.0.0.0:8008'
     trix_synapse_reverse_proxy_companion_container_federation_api_host_bind_port: '0.0.0.0:8048'
      matrix_client_element_container_http_host_bind_port: "0.0.0.0:8765"
     

3. If you'll manage SSL certificates by yourself, edit your configuration file (inventory/host_vars/matrix.<your-domain>/vars.yml) to disable SSL certificate retrieval:

matrix_ssl_retrieval_method: none

Note: During installation, unless you've disabled SSL certificate management (matrix_ssl_retrieval_method: none), the playbook would need 80 to be available, in order to retrieve SSL certificates. Please manually stop your other webserver while installing. You can start it back up afterwards.

Using your own external nginx webserver

Once you've followed the Preparation guide above, it's time to set up your external nginx server.

Even with matrix_nginx_proxy_enabled: false, the playbook still generates some helpful files for you in /matrix/nginx-proxy/conf.d. Those configuration files are adapted for use with an external web server (one not running in the container network).

You can most likely directly use the config files installed by this playbook at: /matrix/nginx-proxy/conf.d. Just include them in your own nginx.conf like this: include /matrix/nginx-proxy/conf.d/*.conf;

Note that if your nginx version is old, it might not like our default choice of SSL protocols (particularly the fact that the brand new TLSv1.3 protocol is enabled). You can override the protocol list by redefining the matrix_nginx_proxy_ssl_protocols variable. Example:

# Custom protocol list (removing `TLSv1.3`) to suit your nginx version.
matrix_nginx_proxy_ssl_protocols: "TLSv1.2"

If you are experiencing issues, try updating to a newer version of Nginx. As a data point in May 2021 a user reported that Nginx 1.14.2 was not working for them. They were getting errors about socket leaks. Updating to Nginx 1.19 fixed their issue.

Using your own external Apache webserver

Once you've followed the Preparation guide above, you can take a look at the examples/apache directory for a sample configuration.

Using your own external caddy webserver

After following the Preparation guide above, you can take a look at the examples/caddy directory and examples/caddy2 directory for a sample configuration for Caddy v1 and v2, respectively.

Using your own HAproxy reverse proxy

After following the Preparation guide above, you can take a look at the examples/haproxy directory for a sample configuration. In this case HAproxy is used as a reverse proxy and a simple Nginx container is used to serve statically .well-known files.

Using another external webserver

Feel free to look at the examples/apache directory, or the template files in the matrix-nginx-proxy role.

Method 2: Fronting the integrated nginx reverse-proxy webserver with another reverse-proxy

This method is about leaving the integrated nginx reverse-proxy webserver be, but making it not get in the way (using up important ports, trying to retrieve SSL certificates, etc.).

If you wish to use another webserver, the integrated nginx reverse-proxy webserver usually gets in the way because it attempts to fetch SSL certificates and binds to ports 80, 443 and 8448 (if Matrix Federation is enabled).

You can disable such behavior and make the integrated nginx reverse-proxy webserver only serve traffic locally (or over a local network).

You would need some configuration like this:

matrix_playbook_reverse_proxy_type: other-on-same-host

# Do not listen for HTTP on port 80 globally (default), listen on the loopback interface.
# If you'd like, you can make it use the local network as well and reverse-proxy from another local machine.
matrix_nginx_proxy_container_http_host_bind_port: '127.0.0.1:81'

# Likewise, expose the Matrix Federation port on the loopback interface.
# Since `matrix_nginx_proxy_https_enabled` is set to `false`, this federation port will serve HTTP traffic.
# If you'd like, you can make it use the local network as well and reverse-proxy from another local machine.
#
# You'd most likely need to expose it publicly on port 8448 (8449 was chosen for the local port to prevent overlap).
matrix_nginx_proxy_container_federation_host_bind_port: '127.0.0.1:8449'

# Coturn relies on SSL certificates that have already been obtained.
# Since we don't obtain any certificates in this `other-on-same-host` mode, it won't work by default.
# An alternative is to tweak some of: `matrix_coturn_tls_enabled`, `matrix_coturn_tls_cert_path` and `matrix_coturn_tls_key_path`.
matrix_coturn_enabled: false

With this, nginx would still be in use, but it would not bother with anything SSL related or with taking up public ports.

All services would be served locally on 127.0.0.1:81 and 127.0.0.1:8449 (as per the example configuration above).

You can then set up another reverse-proxy server on ports 80/443/8448 for all of the expected domains and make traffic go to these local ports. The expected domains vary depending on the services you have enabled (matrix.DOMAIN for sure; element.DOMAIN, dimension.DOMAIN and jitsi.DOMAIN are optional).

Sample configuration for running behind Traefik 2.0

To run behind Traefik, you can:

• use a Playbook-managed Traefik installation
• or, use Your own Traefik server (not managed by the playbook)

Playbook-managed Traefik installation

The playbook can install and manage Traefik for you using the com.devture.ansible.role.traefik role.

It's simplest if you go with this method. You will need the following configuration:

matrix_playbook_reverse_proxy_type: playbook-managed-traefik

devture_traefik_ssl_email_address: YOUR_EMAIL_ADDRESS

Your own Traefik server (not managed by the playbook)

If you'd like to run Traefik yourself, you can use configuration like this:

matrix_playbook_reverse_proxy_type: other-traefik-container

matrix_playbook_reverse_proxyable_services_additional_network: your-traefik-network

In this mode all roles will still have Traefik labels attached. You will, however, need to configure your Traefik instance and its entrypoints.

By default, the playbook congiures services use a web-secure (443) and matrix-federation (8448) entrypoints, as well as a default certificate resolver.

Below is some configuration for running Traefik yourself (although we recommend using a playbook-managed Traefik installation).

Note that this configuration on its own does not redirect traffic on port 80 (plain HTTP) to port 443 for HTTPS, which may cause some issues, since the built-in Nginx proxy usually does this. If you are not already doing this in Traefik, it can be added to Traefik in a file provider as follows:

[http]
  [http.routers]
    [http.routers.redirect-http]
      entrypoints = ["web"] # The 'web' entrypoint must bind to port 80
      rule = "HostRegexp(`{host:.+}`)" # Change if you don't want to redirect all hosts to HTTPS
      service = "dummy" # Unused, but all routers need services (for now)
      middlewares = ["https"]
  [http.services]
    [http.services.dummy.loadbalancer]
      [[http.services.dummy.loadbalancer.servers]]
        url = "localhost"
  [http.middlewares]
    [http.middlewares.https.redirectscheme]
      scheme = "https"
      permanent = true

You can use the following docker-compose.yml as example to launch Traefik.

version: "3.3"

services:

  traefik:
    image: "docker.io/traefik:v2.9.6"
    restart: always
    container_name: "traefik"
    networks:
      - traefik
    command:
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.network=traefik"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web-secure.address=:443"
      - "--entrypoints.federation.address=:8448"
      - "--certificatesresolvers.default.acme.tlschallenge=true"
      - "--certificatesresolvers.default.acme.email=YOUR EMAIL"
      - "--certificatesresolvers.default.acme.storage=/letsencrypt/acme.json"
    ports:
      - "443:443"
      - "8448:8448"
    volumes:
      - "./letsencrypt:/letsencrypt"
      - "/var/run/docker.sock:/var/run/docker.sock:ro"

networks:
  traefik:
    external: true