- Installing Synapse
- Setting up Synapse
Installing from source
(Prebuilt packages are available for some platforms - see Prebuilt packages.)
- POSIX-compliant system (tested on Linux & OS X)
- Python 3.5, 3.6, 3.7, or 2.7
- At least 1GB of free RAM if you want to join large public rooms like #matrix:matrix.org
Synapse is written in Python but some of the libraries it uses are written in C. So before we can install Synapse itself we need a working C compiler and the header files for Python C extensions. See Platform-Specific Instructions for information on installing these on various platforms.
To install the Synapse homeserver run:
mkdir -p ~/synapse virtualenv -p python3 ~/synapse/env source ~/synapse/env/bin/activate pip install --upgrade pip pip install --upgrade setuptools pip install matrix-synapse[all]
This will download Synapse from PyPI
and install it, along with the python libraries it uses, into a virtual environment
~/synapse/env. Feel free to pick a different directory if you
This Synapse installation can then be later upgraded by using pip again with the update flag:
source ~/synapse/env/bin/activate pip install -U matrix-synapse[all]
Before you can start Synapse, you will need to generate a configuration file. To do this, run (in your virtualenv, as before)::
cd ~/synapse python -m synapse.app.homeserver \ --server-name my.domain.name \ --config-path homeserver.yaml \ --generate-config \ --report-stats=[yes|no]
... substituting an appropriate value for
--server-name. The server name
determines the "domain" part of user-ids for users on your server: these will
all be of the format
@user:my.domain.name. It also determines how other
matrix servers will reach yours for Federation. For a test configuration,
set this to the hostname of your server. For a more production-ready setup, you
will probably want to specify your domain (
example.com) rather than a
matrix-specific hostname here (in the same way that your email address is
firstname.lastname@example.org rather than
email@example.com) - but
doing so may require more advanced setup: see Setting up Federation.
Beware that the server name cannot be changed later.
This command will generate you a config file that you can then customise, but it will
also generate a set of keys for you. These keys will allow your Home Server to
identify itself to other Home Servers, so don't lose or delete them. It would be
wise to back them up somewhere safe. (If, for whatever reason, you do need to
change your Home Server's keys, you may find that other Home Servers have the
old key cached. If you update the signing key, you should change the name of the
key in the
<server name>.signing.key file (the second word) to something
different. See the
for more information on key management.)
You will need to give Synapse a TLS certficate before it will start - see TLS certificates.
To actually run your new homeserver, pick a working directory for Synapse to
cd ~/synapse source env/bin/activate synctl start
Installing prerequisites on Ubuntu or Debian:
sudo apt-get install build-essential python3-dev libffi-dev \ python-pip python-setuptools sqlite3 \ libssl-dev python-virtualenv libjpeg-dev libxslt1-dev
Installing prerequisites on ArchLinux:
sudo pacman -S base-devel python python-pip \ python-setuptools python-virtualenv sqlite3
Installing prerequisites on CentOS 7 or Fedora 25:
sudo yum install libtiff-devel libjpeg-devel libzip-devel freetype-devel \ lcms2-devel libwebp-devel tcl-devel tk-devel redhat-rpm-config \ python-virtualenv libffi-devel openssl-devel sudo yum groupinstall "Development Tools"
Mac OS X
Installing prerequisites on Mac OS X:
xcode-select --install sudo easy_install pip sudo pip install virtualenv brew install pkg-config libffi
Installing prerequisites on openSUSE:
sudo zypper in -t pattern devel_basis sudo zypper in python-pip python-setuptools sqlite3 python-virtualenv \ python-devel libffi-devel libopenssl-devel libjpeg62-devel
Installing prerequisites on OpenBSD:
doas pkg_add python libffi py-pip py-setuptools sqlite3 py-virtualenv \ libxslt jpeg
There is currently no port for OpenBSD. Additionally, OpenBSD's security settings require a slightly more difficult installation process.
XXX: I suspect this is out of date.
- Create a new directory in
_synapse. Also, create a new user called
_synapseand set that directory as the new user's home. This is required because, by default, OpenBSD only allows binaries which need write and execute permissions on the same memory space to be run from
suto the new
_synapseuser and change to their home directory.
- Create a new virtualenv:
virtualenv -p python2.7 ~/.synapse
- Source the virtualenv configuration located at
/usr/local/_synapse/.synapse/bin/activate. This is done in
kshby using the
.command, rather than
- Optionally, use
lxml, which Synapse needs to parse webpages for their titles.
pipto install this repository:
pip install matrix-synapse
- Optionally, change
_synapse's shell to
/bin/falseto reduce the chance of a compromised Synapse server being used to take over your box.
After this, you may proceed with the rest of the install directions.
If you wish to run or develop Synapse on Windows, the Windows Subsystem For Linux provides a Linux environment on Windows 10 which is capable of using the Debian, Fedora, or source installation methods. More information about WSL can be found at https://docs.microsoft.com/en-us/windows/wsl/install-win10 for Windows 10 and https://docs.microsoft.com/en-us/windows/wsl/install-on-server for Windows Server.
XXX a bunch of this is no longer relevant.
Synapse requires pip 8 or later, so if your OS provides too old a version you may need to manually upgrade it::
sudo pip install --upgrade pip
Installing may fail with
Could not find any downloads that satisfy the requirement pymacaroons-pynacl (from matrix-synapse==0.12.0).
You can fix this by manually upgrading pip and virtualenv::
sudo pip install --upgrade virtualenv
You can next rerun
virtualenv -p python3 synapse to update the virtual env.
Installing may fail during installing virtualenv with
InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
You can fix this by manually installing ndg-httpsclient::
pip install --upgrade ndg-httpsclient
Installing may fail with
mock requires setuptools>=17.1. Aborting installation.
You can fix this by upgrading setuptools::
pip install --upgrade setuptools
If pip crashes mid-installation for reason (e.g. lost terminal), pip may refuse to run until you remove the temporary installation directory it created. To reset the installation::
rm -rf /tmp/pip_install_matrix
pip seems to leak lots of memory during installation. For instance, a Linux host with 512MB of RAM may run out of memory whilst installing Twisted. If this happens, you will have to individually install the dependencies which are failing, e.g.::
pip install twisted
As an alternative to installing from source, prebuilt packages are available for a number of platforms.
Docker images and Ansible playbooks
There is an offical synapse image available at https://hub.docker.com/r/matrixdotorg/synapse which can be used with the docker-compose file available at contrib/docker. Further information on this including configuration options is available in the README on hub.docker.com.
Alternatively, Andreas Peters (previously Silvio Fricke) has contributed a Dockerfile to automate a synapse server in a single Docker image, at https://hub.docker.com/r/avhost/docker-matrix/tags/
Slavi Pantaleev has created an Ansible playbook, which installs the offical Docker image of Matrix Synapse along with many other Matrix-related services (Postgres database, riot-web, coturn, mxisd, SSL support, etc.). For more details, see https://github.com/spantaleev/matrix-docker-ansible-deploy
Matrix.org provides Debian/Ubuntu packages of the latest stable version of Synapse via https://matrix.org/packages/debian/. To use them:
sudo apt install -y lsb-release curl apt-transport-https echo "deb https://matrix.org/packages/debian `lsb_release -cs` main" | sudo tee /etc/apt/sources.list.d/matrix-org.list curl "https://matrix.org/packages/debian/repo-key.asc" | sudo apt-key add - sudo apt update sudo apt install matrix-synapse-py3
Downstream Debian/Ubuntu packages
sid, Synapse is available in the Debian repositories and
it should be possible to install it with simply:
sudo apt install matrix-synapse
There is also a version of
stretch-backports. Please see
the Debian documentation on
backports for information on how
to use them.
We do not recommend using the packages in downstream Ubuntu at this time, as they are old and suffer from known security vulnerabilities.
Synapse is in the Fedora repositories as
sudo dnf install matrix-synapse
Oleg Girko provides Fedora RPMs at https://obs.infoserver.lv/project/monitor/matrix-synapse
Synapse is in the OpenSUSE repositories as
sudo zypper install matrix-synapse
SUSE Linux Enterprise Server
Unofficial package are built for SLES 15 in the openSUSE:Backports:SLE-15 repository at https://download.opensuse.org/repositories/openSUSE:/Backports:/SLE-15/standard/
The quickest way to get up and running with ArchLinux is probably with the community package https://www.archlinux.org/packages/community/any/matrix-synapse/, which should pull in most of the necessary dependencies.
pip may be outdated (6.0.7-1 and needs to be upgraded to 6.0.8-1 ):
sudo pip install --upgrade pip
If you encounter an error with lib bcrypt causing an Wrong ELF Class: ELFCLASS32 (x64 Systems), you may need to reinstall py-bcrypt to correctly compile it under the right architecture. (This should not be needed if installing under virtualenv):
sudo pip uninstall py-bcrypt sudo pip install py-bcrypt
Synapse can be installed via FreeBSD Ports or Packages contributed by Brendan Molloy from:
cd /usr/ports/net-im/py-matrix-synapse && make install clean
pkg install py27-matrix-synapse
Robin Lambertz has packaged Synapse for NixOS at: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/services/misc/matrix-synapse.nix
Setting up Synapse
Once you have installed synapse as above, you will need to configure it.
The default configuration exposes a single HTTP port: http://localhost:8008. It is suitable for local testing, but for any practical use, you will either need to enable a reverse proxy, or configure Synapse to expose an HTTPS port.
For information on using a reverse proxy, see docs/reverse_proxy.rst.
To configure Synapse to expose an HTTPS port, you will need to edit
homeserver.yaml, as follows:
First, under the
listenerssection, uncomment the configuration for the TLS-enabled listener. (Remove the hash sign (
#) at the start of each line). The relevant lines are like this:
- port: 8448 type: http tls: true resources: - names: [client, federation]
You will also need to uncomment the
tls_private_key_pathlines under the
TLSsection. You can either point these settings at an existing certificate and key, or you can enable Synapse's built-in ACME (Let's Encrypt) support. Instructions for having Synapse automatically provision and renew federation certificates through ACME can be found at ACME.md.
For those of you upgrading your TLS certificate in readiness for Synapse 1.0,
please take a look at
our guide <docs/MSC1711_certificates_FAQ.md#configuring-certificates-for-compatibility-with-synapse-100>_.
Registering a user
You will need at least one user on your server in order to use a Matrix client. Users can be registered either via a Matrix client, or via a commandline script.
To get started, it is easiest to use the command line to register new users. This can be done as follows:
$ source ~/synapse/env/bin/activate $ synctl start # if not already running $ register_new_matrix_user -c homeserver.yaml http://localhost:8008 New user localpart: erikj Password: Confirm password: Make admin [no]: Success!
This process uses a setting
homeserver.yaml, which is shared between Synapse itself and the
register_new_matrix_user script. It doesn't matter what it is (a random
value is generated by
--generate-config), but it should be kept secret, as
anyone with knowledge of it can register users on your server even if
Setting up a TURN server
For reliable VoIP calls to be routed via this homeserver, you MUST configure a TURN server. See docs/turn-howto.rst for details.
Synapse includes support for previewing URLs, which is disabled by default. To
turn it on you must enable the
url_preview_enabled: True config parameter
and explicitly specify the IP ranges that Synapse is not allowed to spider for
previewing in the
url_preview_ip_range_blacklist configuration parameter.
This is critical from a security perspective to stop arbitrary Matrix users
spidering 'internal' URLs on your network. At the very least we recommend that
your loopback and RFC1918 IP addresses are blacklisted.
This also requires the optional lxml and netaddr python dependencies to be
installed. This in turn requires the libxml2 library to be available - on
Debian/Ubuntu this means
apt-get install libxml2-dev, or equivalent for