Upgrading Synapse ================= Before upgrading check if any special steps are required to upgrade from the what you currently have installed to current version of Synapse. The extra instructions that may be required are listed later in this document. * If Synapse was installed using `prebuilt packages <INSTALL.md#prebuilt-packages>`_, you will need to follow the normal process for upgrading those packages. * If Synapse was installed from source, then: 1. Activate the virtualenv before upgrading. For example, if Synapse is installed in a virtualenv in ``~/synapse/env`` then run: .. code:: bash source ~/synapse/env/bin/activate 2. If Synapse was installed using pip then upgrade to the latest version by running: .. code:: bash pip install --upgrade matrix-synapse If Synapse was installed using git then upgrade to the latest version by running: .. code:: bash git pull pip install --upgrade . 3. Restart Synapse: .. code:: bash ./synctl restart To check whether your update was successful, you can check the running server version with: .. code:: bash # you may need to replace 'localhost:8008' if synapse is not configured # to listen on port 8008. curl http://localhost:8008/_synapse/admin/v1/server_version Rolling back to older versions ------------------------------ Rolling back to previous releases can be difficult, due to database schema changes between releases. Where we have been able to test the rollback process, this will be noted below. In general, you will need to undo any changes made during the upgrade process, for example: * pip: .. code:: bash source env/bin/activate # replace `1.3.0` accordingly: pip install matrix-synapse==1.3.0 * Debian: .. code:: bash # replace `1.3.0` and `stretch` accordingly: wget https://packages.matrix.org/debian/pool/main/m/matrix-synapse-py3/matrix-synapse-py3_1.3.0+stretch1_amd64.deb dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb Upgrading to v1.4.0 =================== Config options -------------- **Note: Registration by email address or phone number will not work in this release unless some config options are changed from their defaults.** This is due to Synapse v1.4.0 now defaulting to sending registration and password reset tokens itself. This is for security reasons as well as putting less reliance on identity servers. However, currently Synapse only supports sending emails, and does not have support for phone-based password reset or account registration. If Synapse is configured to handle these on its own, phone-based password resets and registration will be disabled. For Synapse to send emails, the ``email`` block of the config must be filled out. If not, then password resets and registration via email will be disabled entirely. This release also deprecates the ``email.trust_identity_server_for_password_resets`` option and replaces it with the ``account_threepid_delegates`` dictionary. This option defines whether the homeserver should delegate an external server (typically an `identity server <https://matrix.org/docs/spec/identity_service/r0.2.1>`_) to handle sending password reset or registration messages via email and SMS. If ``email.trust_identity_server_for_password_resets`` is set to ``true``, and ``account_threepid_delegates.email`` is not set, then the first entry in ``trusted_third_party_id_servers`` will be used as the account threepid delegate for email. This is to ensure compatibility with existing Synapse installs that set up external server handling for these tasks before v1.4.0. If ``email.trust_identity_server_for_password_resets`` is ``true`` and no trusted identity server domains are configured, Synapse will throw an error. If ``email.trust_identity_server_for_password_resets`` is ``false`` or absent and a threepid type in ``account_threepid_delegates`` is not set to a domain, then Synapse will attempt to send password reset and registration messages for that type. Email templates --------------- If you have configured a custom template directory with the ``email.template_dir`` option, be aware that there are new templates regarding registration. ``registration.html`` and ``registration.txt`` have been added and contain the content that is sent to a client upon registering via an email address. ``registration_success.html`` and ``registration_failure.html`` are also new HTML templates that will be shown to the user when they click the link in their registration emai , either showing them a success or failure page (assuming a redirect URL is not configured). Synapse will expect these files to exist inside the configured template directory. To view the default templates, see `synapse/res/templates <https://github.com/matrix-org/synapse/tree/master/synapse/res/templates>`_. Rolling back to v1.3.1 ---------------------- If you encounter problems with v1.4.0, it should be possible to roll back to v1.3.1, subject to the following: * The 'room statistics' engine was heavily reworked in this release (see `#5971 <https://github.com/matrix-org/synapse/pull/5971>`_), including significant changes to the database schema, which are not easily reverted. This will cause the room statistics engine to stop updating when you downgrade. The room statistics are essentially unused in v1.3.1 (in future versions of Synapse, they will be used to populate the room directory), so there should be no loss of functionality. However, the statistics engine will write errors to the logs, which can be avoided by setting the following in `homeserver.yaml`: .. code:: yaml stats: enabled: false Don't forget to re-enable it when you upgrade again, in preparation for its use in the room directory! Upgrading to v1.2.0 =================== Some counter metrics have been renamed, with the old names deprecated. See `the metrics documentation <docs/metrics-howto.md#renaming-of-metrics--deprecation-of-old-names-in-12>`_ for details. Upgrading to v1.1.0 =================== Synapse v1.1.0 removes support for older Python and PostgreSQL versions, as outlined in `our deprecation notice <https://matrix.org/blog/2019/04/08/synapse-deprecating-postgres-9-4-and-python-2-x>`_. Minimum Python Version ---------------------- Synapse v1.1.0 has a minimum Python requirement of Python 3.5. Python 3.6 or Python 3.7 are recommended as they have improved internal string handling, significantly reducing memory usage. If you use current versions of the Matrix.org-distributed Debian packages or Docker images, action is not required. If you install Synapse in a Python virtual environment, please see "Upgrading to v0.34.0" for notes on setting up a new virtualenv under Python 3. Minimum PostgreSQL Version -------------------------- If using PostgreSQL under Synapse, you will need to use PostgreSQL 9.5 or above. Please see the `PostgreSQL documentation <https://www.postgresql.org/docs/11/upgrading.html>`_ for more details on upgrading your database. Upgrading to v1.0 ================= Validation of TLS certificates ------------------------------ Synapse v1.0 is the first release to enforce validation of TLS certificates for the federation API. It is therefore essential that your certificates are correctly configured. See the `FAQ <docs/MSC1711_certificates_FAQ.md>`_ for more information. Note, v1.0 installations will also no longer be able to federate with servers that have not correctly configured their certificates. In rare cases, it may be desirable to disable certificate checking: for example, it might be essential to be able to federate with a given legacy server in a closed federation. This can be done in one of two ways:- * Configure the global switch ``federation_verify_certificates`` to ``false``. * Configure a whitelist of server domains to trust via ``federation_certificate_verification_whitelist``. See the `sample configuration file <docs/sample_config.yaml>`_ for more details on these settings. Email ----- When a user requests a password reset, Synapse will send an email to the user to confirm the request. Previous versions of Synapse delegated the job of sending this email to an identity server. If the identity server was somehow malicious or became compromised, it would be theoretically possible to hijack an account through this means. Therefore, by default, Synapse v1.0 will send the confirmation email itself. If Synapse is not configured with an SMTP server, password reset via email will be disabled. To configure an SMTP server for Synapse, modify the configuration section headed ``email``, and be sure to have at least the ``smtp_host``, ``smtp_port`` and ``notif_from`` fields filled out. You may also need to set ``smtp_user``, ``smtp_pass``, and ``require_transport_security``. If you are absolutely certain that you wish to continue using an identity server for password resets, set ``trust_identity_server_for_password_resets`` to ``true``. See the `sample configuration file <docs/sample_config.yaml>`_ for more details on these settings. New email templates --------------- Some new templates have been added to the default template directory for the purpose of the homeserver sending its own password reset emails. If you have configured a custom ``template_dir`` in your Synapse config, these files will need to be added. ``password_reset.html`` and ``password_reset.txt`` are HTML and plain text templates respectively that contain the contents of what will be emailed to the user upon attempting to reset their password via email. ``password_reset_success.html`` and ``password_reset_failure.html`` are HTML files that the content of which (assuming no redirect URL is set) will be shown to the user after they attempt to click the link in the email sent to them. Upgrading to v0.99.0 ==================== Please be aware that, before Synapse v1.0 is released around March 2019, you will need to replace any self-signed certificates with those verified by a root CA. Information on how to do so can be found at `the ACME docs <docs/ACME.md>`_. For more information on configuring TLS certificates see the `FAQ <docs/MSC1711_certificates_FAQ.md>`_. Upgrading to v0.34.0 ==================== 1. This release is the first to fully support Python 3. Synapse will now run on Python versions 3.5, or 3.6 (as well as 2.7). We recommend switching to Python 3, as it has been shown to give performance improvements. For users who have installed Synapse into a virtualenv, we recommend doing this by creating a new virtualenv. For example:: virtualenv -p python3 ~/synapse/env3 source ~/synapse/env3/bin/activate pip install matrix-synapse You can then start synapse as normal, having activated the new virtualenv:: cd ~/synapse source env3/bin/activate synctl start Users who have installed from distribution packages should see the relevant package documentation. See below for notes on Debian packages. * When upgrading to Python 3, you **must** make sure that your log files are configured as UTF-8, by adding ``encoding: utf8`` to the ``RotatingFileHandler`` configuration (if you have one) in your ``<server>.log.config`` file. For example, if your ``log.config`` file contains:: handlers: file: class: logging.handlers.RotatingFileHandler formatter: precise filename: homeserver.log maxBytes: 104857600 backupCount: 10 filters: [context] console: class: logging.StreamHandler formatter: precise filters: [context] Then you should update this to be:: handlers: file: class: logging.handlers.RotatingFileHandler formatter: precise filename: homeserver.log maxBytes: 104857600 backupCount: 10 filters: [context] encoding: utf8 console: class: logging.StreamHandler formatter: precise filters: [context] There is no need to revert this change if downgrading to Python 2. We are also making available Debian packages which will run Synapse on Python 3. You can switch to these packages with ``apt-get install matrix-synapse-py3``, however, please read `debian/NEWS <https://github.com/matrix-org/synapse/blob/release-v0.34.0/debian/NEWS>`_ before doing so. The existing ``matrix-synapse`` packages will continue to use Python 2 for the time being. 2. This release removes the ``riot.im`` from the default list of trusted identity servers. If ``riot.im`` is in your homeserver's list of ``trusted_third_party_id_servers``, you should remove it. It was added in case a hypothetical future identity server was put there. If you don't remove it, users may be unable to deactivate their accounts. 3. This release no longer installs the (unmaintained) Matrix Console web client as part of the default installation. It is possible to re-enable it by installing it separately and setting the ``web_client_location`` config option, but please consider switching to another client. Upgrading to v0.33.7 ==================== This release removes the example email notification templates from ``res/templates`` (they are now internal to the python package). This should only affect you if you (a) deploy your Synapse instance from a git checkout or a github snapshot URL, and (b) have email notifications enabled. If you have email notifications enabled, you should ensure that ``email.template_dir`` is either configured to point at a directory where you have installed customised templates, or leave it unset to use the default templates. Upgrading to v0.27.3 ==================== This release expands the anonymous usage stats sent if the opt-in ``report_stats`` configuration is set to ``true``. We now capture RSS memory and cpu use at a very coarse level. This requires administrators to install the optional ``psutil`` python module. We would appreciate it if you could assist by ensuring this module is available and ``report_stats`` is enabled. This will let us see if performance changes to synapse are having an impact to the general community. Upgrading to v0.15.0 ==================== If you want to use the new URL previewing API (/_matrix/media/r0/preview_url) then you have to explicitly enable it in the config and update your dependencies dependencies. See README.rst for details. Upgrading to v0.11.0 ==================== This release includes the option to send anonymous usage stats to matrix.org, and requires that administrators explictly opt in or out by setting the ``report_stats`` option to either ``true`` or ``false``. We would really appreciate it if you could help our project out by reporting anonymized usage statistics from your homeserver. Only very basic aggregate data (e.g. number of users) will be reported, but it helps us to track the growth of the Matrix community, and helps us to make Matrix a success, as well as to convince other networks that they should peer with us. Upgrading to v0.9.0 =================== Application services have had a breaking API change in this version. They can no longer register themselves with a home server using the AS HTTP API. This decision was made because a compromised application service with free reign to register any regex in effect grants full read/write access to the home server if a regex of ``.*`` is used. An attack where a compromised AS re-registers itself with ``.*`` was deemed too big of a security risk to ignore, and so the ability to register with the HS remotely has been removed. It has been replaced by specifying a list of application service registrations in ``homeserver.yaml``:: app_service_config_files: ["registration-01.yaml", "registration-02.yaml"] Where ``registration-01.yaml`` looks like:: url: <String> # e.g. "https://my.application.service.com" as_token: <String> hs_token: <String> sender_localpart: <String> # This is a new field which denotes the user_id localpart when using the AS token namespaces: users: - exclusive: <Boolean> regex: <String> # e.g. "@prefix_.*" aliases: - exclusive: <Boolean> regex: <String> rooms: - exclusive: <Boolean> regex: <String> Upgrading to v0.8.0 =================== Servers which use captchas will need to add their public key to:: static/client/register/register_config.js window.matrixRegistrationConfig = { recaptcha_public_key: "YOUR_PUBLIC_KEY" }; This is required in order to support registration fallback (typically used on mobile devices). Upgrading to v0.7.0 =================== New dependencies are: - pydenticon - simplejson - syutil - matrix-angular-sdk To pull in these dependencies in a virtual env, run:: python synapse/python_dependencies.py | xargs -n 1 pip install Upgrading to v0.6.0 =================== To pull in new dependencies, run:: python setup.py develop --user This update includes a change to the database schema. To upgrade you first need to upgrade the database by running:: python scripts/upgrade_db_to_v0.6.0.py <db> <server_name> <signing_key> Where `<db>` is the location of the database, `<server_name>` is the server name as specified in the synapse configuration, and `<signing_key>` is the location of the signing key as specified in the synapse configuration. This may take some time to complete. Failures of signatures and content hashes can safely be ignored. Upgrading to v0.5.1 =================== Depending on precisely when you installed v0.5.0 you may have ended up with a stale release of the reference matrix webclient installed as a python module. To uninstall it and ensure you are depending on the latest module, please run:: $ pip uninstall syweb Upgrading to v0.5.0 =================== The webclient has been split out into a seperate repository/pacakage in this release. Before you restart your homeserver you will need to pull in the webclient package by running:: python setup.py develop --user This release completely changes the database schema and so requires upgrading it before starting the new version of the homeserver. The script "database-prepare-for-0.5.0.sh" should be used to upgrade the database. This will save all user information, such as logins and profiles, but will otherwise purge the database. This includes messages, which rooms the home server was a member of and room alias mappings. If you would like to keep your history, please take a copy of your database file and ask for help in #matrix:matrix.org. The upgrade process is, unfortunately, non trivial and requires human intervention to resolve any resulting conflicts during the upgrade process. Before running the command the homeserver should be first completely shutdown. To run it, simply specify the location of the database, e.g.: ./scripts/database-prepare-for-0.5.0.sh "homeserver.db" Once this has successfully completed it will be safe to restart the homeserver. You may notice that the homeserver takes a few seconds longer to restart than usual as it reinitializes the database. On startup of the new version, users can either rejoin remote rooms using room aliases or by being reinvited. Alternatively, if any other homeserver sends a message to a room that the homeserver was previously in the local HS will automatically rejoin the room. Upgrading to v0.4.0 =================== This release needs an updated syutil version. Run:: python setup.py develop You will also need to upgrade your configuration as the signing key format has changed. Run:: python -m synapse.app.homeserver --config-path <CONFIG> --generate-config Upgrading to v0.3.0 =================== This registration API now closely matches the login API. This introduces a bit more backwards and forwards between the HS and the client, but this improves the overall flexibility of the API. You can now GET on /register to retrieve a list of valid registration flows. Upon choosing one, they are submitted in the same way as login, e.g:: { type: m.login.password, user: foo, password: bar } The default HS supports 2 flows, with and without Identity Server email authentication. Enabling captcha on the HS will add in an extra step to all flows: ``m.login.recaptcha`` which must be completed before you can transition to the next stage. There is a new login type: ``m.login.email.identity`` which contains the ``threepidCreds`` key which were previously sent in the original register request. For more information on this, see the specification. Web Client ---------- The VoIP specification has changed between v0.2.0 and v0.3.0. Users should refresh any browser tabs to get the latest web client code. Users on v0.2.0 of the web client will not be able to call those on v0.3.0 and vice versa. Upgrading to v0.2.0 =================== The home server now requires setting up of SSL config before it can run. To automatically generate default config use:: $ python synapse/app/homeserver.py \ --server-name machine.my.domain.name \ --bind-port 8448 \ --config-path homeserver.config \ --generate-config This config can be edited if desired, for example to specify a different SSL certificate to use. Once done you can run the home server using:: $ python synapse/app/homeserver.py --config-path homeserver.config See the README.rst for more information. Also note that some config options have been renamed, including: - "host" to "server-name" - "database" to "database-path" - "port" to "bind-port" and "unsecure-port" Upgrading to v0.0.1 =================== This release completely changes the database schema and so requires upgrading it before starting the new version of the homeserver. The script "database-prepare-for-0.0.1.sh" should be used to upgrade the database. This will save all user information, such as logins and profiles, but will otherwise purge the database. This includes messages, which rooms the home server was a member of and room alias mappings. Before running the command the homeserver should be first completely shutdown. To run it, simply specify the location of the database, e.g.: ./scripts/database-prepare-for-0.0.1.sh "homeserver.db" Once this has successfully completed it will be safe to restart the homeserver. You may notice that the homeserver takes a few seconds longer to restart than usual as it reinitializes the database. On startup of the new version, users can either rejoin remote rooms using room aliases or by being reinvited. Alternatively, if any other homeserver sends a message to a room that the homeserver was previously in the local HS will automatically rejoin the room.