matrix/synapse/README.md

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# Installation and configuration of Synapse

Mind you: this an installation on Debian Linux (at least for now).

Start by installing the latest Synapse server, see the [upstream
documentation](https://element-hq.github.io/synapse/latest/setup/installation.html).

```
apt install -y lsb-release wget apt-transport-https build-essential python3-dev libffi-dev \
               python3-pip python3-setuptools sqlite3 \
               libssl-dev virtualenv libjpeg-dev libxslt1-dev libicu-dev

wget -O /usr/share/keyrings/matrix-org-archive-keyring.gpg https://packages.matrix.org/debian/matrix-org-archive-keyring.gpg

echo "deb [signed-by=/usr/share/keyrings/matrix-org-archive-keyring.gpg] https://packages.matrix.org/debian/ $(lsb_release -cs) main" |
    tee /etc/apt/sources.list.d/matrix-org.list

apt update
apt install matrix-synapse-py3
```

This leaves a very basic configuration in `/etc/matrix-synapse/homeserver.yaml`
and  two settings under `/etc/conf.d`. All other configuration items will also
be configured with yaml-files in this directory.

Configure the domain you with to use in `/etc/matrix-synapse/conf.d/server_name.yaml`.
What you configure here will also be the global part of your Matrix handles
(the part after the colon).

You now have a standard Matrix server that uses sqlite. You really don't want
to use this in production, so probably want to replace this with PostgreSQL.

There are two different ways to configure Synapse, documented here:

* [Monolithic](monolithic)
* [Workers](workers)

We'll use Synapse, using the workers architecture to make it scalable, flexible and reusable.

# Database

The default installation leaves you with an sqlite3 database. Nice for experimenting, but
unsuitable for a production environment.

[Here's how you setup PostgreSQL](../postgresql).


# Logging

Logging is configured in `log.yaml`. Some logging should go to systemd, the
more specific logging to Synapse's own logfile(s).