Upgrading Synapse
Before upgrading check if any special steps are required to upgrade from the version you currently have installed to the current version of Synapse. The extra instructions that may be required are listed later in this document.
-
Check that your versions of Python and PostgreSQL are still supported.
Synapse follows upstream lifecycles for Python and PostgreSQL, and removes support for versions which are no longer maintained.
The website https://endoflife.date also offers convenient summaries.
-
If Synapse was installed using prebuilt packages, you will need to follow the normal process for upgrading those packages.
-
If Synapse was installed using pip then upgrade to the latest version by running:
pip install --upgrade matrix-synapse
-
If Synapse was installed from source, then:
-
Obtain the latest version of the source code. Git users can run
git pull
to do this. -
If you're running Synapse in a virtualenv, make sure to activate it before upgrading. For example, if Synapse is installed in a virtualenv in
~/synapse/env
then run:source ~/synapse/env/bin/activate pip install --upgrade .
Include any relevant extras between square brackets, e.g.
pip install --upgrade ".[postgres,oidc]"
. -
If you're using
poetry
to manage a Synapse installation, run:poetry install
Include any relevant extras with
--extras
, e.g.poetry install --extras postgres --extras oidc
. It's probably easiest to runpoetry install --extras all
. -
Restart Synapse:
synctl restart
-
To check whether your update was successful, you can check the running server version with:
# 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:
source env/bin/activate # replace `1.3.0` accordingly: pip install matrix-synapse==1.3.0
-
Debian:
# 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 v1.76.0
Changes to the account data replication streams
Synapse has changed the format of the account data and devices replication streams (between workers). This is a forwards- and backwards-incompatible change: v1.75 workers cannot process account data replicated by v1.76 workers, and vice versa.
Once all workers are upgraded to v1.76 (or downgraded to v1.75), account data and device replication will resume as normal.
Upgrading to v1.74.0
Unicode support in user search
This version introduces optional support for an improved user search dealing with Unicode characters.
If you want to take advantage of this feature you need to install PyICU, the ICU native dependency and its development headers so that PyICU can build since no prebuilt wheels are available.
You can follow the PyICU documentation to do so,
and then do pip install matrix-synapse[user-search]
for a PyPI install.
Docker images and Debian packages need nothing specific as they already include or specify ICU as an explicit dependency.
Upgrading to v1.73.0
Legacy Prometheus metric names have now been removed
Synapse v1.69.0 included the deprecation of legacy Prometheus metric names and offered an option to disable them. Synapse v1.71.0 disabled legacy Prometheus metric names by default.
This version, v1.73.0, removes those legacy Prometheus metric names entirely.
This also means that the enable_legacy_metrics
configuration option has been
removed; it will no longer be possible to re-enable the legacy metric names.
If you use metrics and have not yet updated your Grafana dashboard(s), Prometheus console(s) or alerting rule(s), please consider doing so when upgrading to this version. Note that the included Grafana dashboard was updated in v1.72.0 to correct some metric names which were missed when legacy metrics were disabled by default.
See v1.69.0: Deprecation of legacy Prometheus metric names for more context.
Upgrading to v1.72.0
Dropping support for PostgreSQL 10
In line with our deprecation policy, we've dropped support for PostgreSQL 10, as it is no longer supported upstream.
This release of Synapse requires PostgreSQL 11+.
Upgrading to v1.71.0
Removal of the generate_short_term_login_token
module API method
As announced with the release of Synapse 1.69.0, the deprecated generate_short_term_login_token
module method has been removed.
Modules relying on it can instead use the create_login_token
method.
Changes to the events received by application services (interest)
To align with spec (changed in
MSC3905), Synapse now
only considers local users to be interesting. In other words, the users
namespace
regex is only be applied against local users of the homeserver.
Please note, this probably doesn't affect the expected behavior of your application
service, since an interesting local user in a room still means all messages in the room
(from local or remote users) will still be considered interesting. And matching a room
with the rooms
or aliases
namespace regex will still consider all events sent in the
room to be interesting to the application service.
If one of your application service's users
regex was intending to match a remote user,
this will no longer match as you expect. The behavioral mismatch between matching all
local users and some remote users is why the spec was changed/clarified and this
caveat is no longer supported.
Legacy Prometheus metric names are now disabled by default
Synapse v1.71.0 disables legacy Prometheus metric names by default.
For administrators that still rely on them and have not yet had chance to update their
uses of the metrics, it's still possible to specify enable_legacy_metrics: true
in
the configuration to re-enable them temporarily.
Synapse v1.73.0 will remove legacy metric names altogether and at that point, it will no longer be possible to re-enable them.
If you do not use metrics or you have already updated your Grafana dashboard(s), Prometheus console(s) and alerting rule(s), there is no action needed.
See v1.69.0: Deprecation of legacy Prometheus metric names.
Upgrading to v1.69.0
Changes to the receipts replication streams
Synapse now includes information indicating if a receipt applies to a thread when replicating it to other workers. This is a forwards- and backwards-incompatible change: v1.68 and workers cannot process receipts replicated by v1.69 workers, and vice versa.
Once all workers are upgraded to v1.69 (or downgraded to v1.68), receipts replication will resume as normal.
Deprecation of legacy Prometheus metric names
In current versions of Synapse, some Prometheus metrics are emitted under two different names, with one of the names being older but non-compliant with OpenMetrics and Prometheus conventions and one of the names being newer but compliant.
Synapse v1.71.0 will turn the old metric names off by default.
For administrators that still rely on them and have not had chance to update their
uses of the metrics, it's possible to specify enable_legacy_metrics: true
in
the configuration to re-enable them temporarily.
Synapse v1.73.0 will remove legacy metric names altogether and it will no longer be possible to re-enable them.
The Grafana dashboard, Prometheus recording rules and Prometheus Consoles included
in the contrib
directory in the Synapse repository have been updated to no longer
rely on the legacy names. These can be used on a current version of Synapse
because current versions of Synapse emit both old and new names.
You may need to update your alerting rules or any other rules that depend on
the names of Prometheus metrics.
If you want to test your changes before legacy names are disabled by default,
you may specify enable_legacy_metrics: false
in your homeserver configuration.
A list of affected metrics is available on the Metrics How-to page.
Deprecation of the generate_short_term_login_token
module API method
The following method of the module API has been deprecated, and is scheduled to be remove in v1.71.0:
def generate_short_term_login_token(
self,
user_id: str,
duration_in_ms: int = (2 * 60 * 1000),
auth_provider_id: str = "",
auth_provider_session_id: Optional[str] = None,
) -> str:
...
It has been replaced by an asynchronous equivalent:
async def create_login_token(
self,
user_id: str,
duration_in_ms: int = (2 * 60 * 1000),
auth_provider_id: Optional[str] = None,
auth_provider_session_id: Optional[str] = None,
) -> str:
...
Synapse will log a warning when a module uses the deprecated method, to help administrators find modules using it.
Upgrading to v1.68.0
Two changes announced in the upgrade notes for v1.67.0 have now landed in v1.68.0.
SQLite version requirement
Synapse now requires a SQLite version of 3.27.0 or higher if SQLite is configured as Synapse's database.
Installations using
- Docker images from
matrixdotorg
, - Debian packages from Matrix.org, or
- a PostgreSQL database
are not affected.
Rust requirement when building from source.
Building from a source checkout of Synapse now requires a recent Rust compiler (currently Rust 1.58.1, but see also the Platform Dependency Policy).
Installations using
- Docker images from
matrixdotorg
, - Debian packages from Matrix.org, or
- PyPI wheels via
pip install matrix-synapse
(on supported platforms and architectures)
will not be affected.
Upgrading to v1.67.0
Direct TCP replication is no longer supported: migrate to Redis
Redis support was added in v1.13.0 with it becoming the recommended method in v1.18.0. It replaced the old direct TCP connections (which was deprecated as of v1.18.0) to the main process. With Redis, rather than all the workers connecting to the main process, all the workers and the main process connect to Redis, which relays replication commands between processes. This can give a significant CPU saving on the main process and is a prerequisite for upcoming performance improvements.
To migrate to Redis add the redis
config,
and remove the TCP replication
listener from config of the master and
worker_replication_port
from worker config. Note that a HTTP listener with a
replication
resource is still required.
Minimum version of Poetry is now v1.2.0
The minimum supported version of poetry is now 1.2. This should only affect those installing from a source checkout.
Rust requirement in the next release
From the next major release (v1.68.0) installing Synapse from a source checkout
will require a recent Rust compiler. Those using packages or
pip install matrix-synapse
will not be affected.
The simplest way of installing Rust is via rustup.rs
SQLite version requirement in the next release
From the next major release (v1.68.0) Synapse will require SQLite 3.27.0 or higher. Synapse v1.67.0 will be the last major release supporting SQLite versions 3.22 to 3.26.
Those using Docker images or Debian packages from Matrix.org will not be affected. If you have installed from source, you should check the version of SQLite used by Python with:
python -c "import sqlite3; print(sqlite3.sqlite_version)"
If this is too old, refer to your distribution for advice on upgrading.
Upgrading to v1.66.0
Delegation of email validation no longer supported
As of this version, Synapse no longer allows the tasks of verifying email address ownership, and password reset confirmation, to be delegated to an identity server. This removal was previously planned for Synapse 1.64.0, but was delayed until now to give homeserver administrators more notice of the change.
To continue to allow users to add email addresses to their homeserver accounts,
and perform password resets, make sure that Synapse is configured with a working
email server in the email
configuration
section
(including, at a minimum, a notif_from
setting.)
Specifying an email
setting under account_threepid_delegates
will now cause
an error at startup.
Upgrading to v1.64.0
Deprecation of the ability to delegate e-mail verification to identity servers
Synapse v1.66.0 will remove the ability to delegate the tasks of verifying email address ownership, and password reset confirmation, to an identity server.
If you require your homeserver to verify e-mail addresses or to support password resets via e-mail, please configure your homeserver with SMTP access so that it can send e-mails on its own behalf. Consult the configuration documentation for more information.
The option that will be removed is account_threepid_delegates.email
.
Changes to the event replication streams
Synapse now includes a flag indicating if an event is an outlier when replicating it to other workers. This is a forwards- and backwards-incompatible change: v1.63 and workers cannot process events replicated by v1.64 workers, and vice versa.
Once all workers are upgraded to v1.64 (or downgraded to v1.63), event replication will resume as normal.
frozendict release
frozendict 2.3.3
has recently been released, which fixes a memory leak that occurs during /sync
requests. We advise server administrators who installed Synapse via pip to upgrade
frozendict with pip install --upgrade frozendict
. The Docker image
matrixdotorg/synapse
and the Debian packages from packages.matrix.org
already
include the updated library.
Upgrading to v1.62.0
New signatures for spam checker callbacks
As a followup to changes in v1.60.0, the following spam-checker callbacks have changed signature:
user_may_join_room
user_may_invite
user_may_send_3pid_invite
user_may_create_room
user_may_create_room_alias
user_may_publish_room
check_media_file_for_spam
For each of these methods, the previous callback signature has been deprecated.
Whereas callbacks used to return bool
, they should now return Union["synapse.module_api.NOT_SPAM", "synapse.module_api.errors.Codes"]
.
For instance, if your module implements user_may_join_room
as follows:
async def user_may_join_room(self, user_id: str, room_id: str, is_invited: bool)
if ...:
# Request is spam
return False
# Request is not spam
return True
you should rewrite it as follows:
async def user_may_join_room(self, user_id: str, room_id: str, is_invited: bool)
if ...:
# Request is spam, mark it as forbidden (you may use some more precise error
# code if it is useful).
return synapse.module_api.errors.Codes.FORBIDDEN
# Request is not spam, mark it as such.
return synapse.module_api.NOT_SPAM
Upgrading to v1.61.0
Removal of deprecated community/groups
This release of Synapse will remove deprecated community/groups from codebase.
Worker endpoints
For those who have deployed workers, following worker endpoints will no longer exist and they can be removed from the reverse proxy configuration:
^/_matrix/federation/v1/get_groups_publicised$
^/_matrix/client/(r0|v3|unstable)/joined_groups$
^/_matrix/client/(r0|v3|unstable)/publicised_groups$
^/_matrix/client/(r0|v3|unstable)/publicised_groups/
^/_matrix/federation/v1/groups/
^/_matrix/client/(r0|v3|unstable)/groups/
Upgrading to v1.60.0
Adding a new unique index to state_group_edges
could fail if your database is corrupted
This release of Synapse will add a unique index to the state_group_edges
table, in order
to prevent accidentally introducing duplicate information (for example, because a database
backup was restored multiple times).
Duplicate rows being present in this table could cause drastic performance problems; see issue 11779 for more details.
If your Synapse database already has had duplicate rows introduced into this table, this could fail, with either of these errors:
On Postgres:
synapse.storage.background_updates - 623 - INFO - background_updates-0 - Adding index state_group_edges_unique_idx to state_group_edges
synapse.storage.background_updates - 282 - ERROR - background_updates-0 - Error doing update
...
psycopg2.errors.UniqueViolation: could not create unique index "state_group_edges_unique_idx"
DETAIL: Key (state_group, prev_state_group)=(2, 1) is duplicated.
(The numbers may be different.)
On SQLite:
synapse.storage.background_updates - 623 - INFO - background_updates-0 - Adding index state_group_edges_unique_idx to state_group_edges
synapse.storage.background_updates - 282 - ERROR - background_updates-0 - Error doing update
...
sqlite3.IntegrityError: UNIQUE constraint failed: state_group_edges.state_group, state_group_edges.prev_state_group
Expand this section for steps to resolve this problem
On Postgres
Connect to your database with psql
.
BEGIN;
DELETE FROM state_group_edges WHERE (ctid, state_group, prev_state_group) IN (
SELECT row_id, state_group, prev_state_group
FROM (
SELECT
ctid AS row_id,
MIN(ctid) OVER (PARTITION BY state_group, prev_state_group) AS min_row_id,
state_group,
prev_state_group
FROM state_group_edges
) AS t1
WHERE row_id <> min_row_id
);
COMMIT;
On SQLite
At the command-line, use sqlite3 path/to/your-homeserver-database.db
:
BEGIN;
DELETE FROM state_group_edges WHERE (rowid, state_group, prev_state_group) IN (
SELECT row_id, state_group, prev_state_group
FROM (
SELECT
rowid AS row_id,
MIN(rowid) OVER (PARTITION BY state_group, prev_state_group) AS min_row_id,
state_group,
prev_state_group
FROM state_group_edges
)
WHERE row_id <> min_row_id
);
COMMIT;
For more details
This comment on issue 11779 has queries that can be used to check a database for this problem in advance.
New signature for the spam checker callback check_event_for_spam
The previous signature has been deprecated.
Whereas check_event_for_spam
callbacks used to return Union[str, bool]
, they should now return Union["synapse.module_api.NOT_SPAM", "synapse.module_api.errors.Codes"]
.
This is part of an ongoing refactoring of the SpamChecker API to make it less ambiguous and more powerful.
If your module implements check_event_for_spam
as follows:
async def check_event_for_spam(event):
if ...:
# Event is spam
return True
# Event is not spam
return False
you should rewrite it as follows:
async def check_event_for_spam(event):
if ...:
# Event is spam, mark it as forbidden (you may use some more precise error
# code if it is useful).
return synapse.module_api.errors.Codes.FORBIDDEN
# Event is not spam, mark it as such.
return synapse.module_api.NOT_SPAM
Upgrading to v1.59.0
Device name lookup over federation has been disabled by default
The names of user devices are no longer visible to users on other homeservers by default. Device IDs are unaffected, as these are necessary to facilitate end-to-end encryption.
To re-enable this functionality, set the
allow_device_name_lookup_over_federation
homeserver config option to true
.
Deprecation of the synapse.app.appservice
and synapse.app.user_dir
worker application types
The synapse.app.appservice
worker application type allowed you to configure a
single worker to use to notify application services of new events, as long
as this functionality was disabled on the main process with notify_appservices: False
.
Further, the synapse.app.user_dir
worker application type allowed you to configure
a single worker to be responsible for updating the user directory, as long as this
was disabled on the main process with update_user_directory: False
.
To unify Synapse's worker types, the synapse.app.appservice
worker application
type and the notify_appservices
configuration option have been deprecated.
The synapse.app.user_dir
worker application type and update_user_directory
configuration option have also been deprecated.
To get the same functionality as was provided by the deprecated options, it's now recommended that the synapse.app.generic_worker
worker application type is used and that the notify_appservices_from_worker
and/or
update_user_directory_from_worker
options are set to the name of a worker.
For the time being, the old options can be used alongside the new options to make it easier to transition between the two configurations, however please note that:
- the options must not contradict each other (otherwise Synapse won't start); and
- the
notify_appservices
andupdate_user_directory
options will be removed in a future release of Synapse.
Please see the Notifying Application Services and Updating the User Directory sections of the worker documentation for more information.
Upgrading to v1.58.0
Groups/communities feature has been disabled by default
The non-standard groups/communities feature in Synapse has been disabled by default and will be removed in Synapse v1.61.0.
Upgrading to v1.57.0
Changes to database schema for application services
Synapse v1.57.0 includes a change to the way transaction IDs are managed for application services. If your deployment uses a dedicated worker for application service traffic, it must be stopped when the database is upgraded (which normally happens when the main process is upgraded), to ensure the change is made safely without any risk of reusing transaction IDs.
Deployments which do not use separate worker processes can be upgraded as normal. Similarly, deployments where no application services are in use can be upgraded as normal.
Recovering from an incorrect upgrade
If the database schema is upgraded without stopping the worker responsible for AS traffic, then the following error may be given when attempting to start a Synapse worker or master process:
**********************************************************************************
Error during initialisation:
Postgres sequence 'application_services_txn_id_seq' is inconsistent with associated
table 'application_services_txns'. This can happen if Synapse has been downgraded and
then upgraded again, or due to a bad migration.
To fix this error, shut down Synapse (including any and all workers)
and run the following SQL:
SELECT setval('application_services_txn_id_seq', (
SELECT GREATEST(MAX(txn_id), 0) FROM application_services_txns
));
See docs/postgres.md for more information.
There may be more information in the logs.
**********************************************************************************
This error may also be seen if Synapse is downgraded to an earlier version, and then upgraded again to v1.57.0 or later.
In either case:
- Ensure that the worker responsible for AS traffic is stopped.
- Run the SQL command given in the error message via
psql
.
Synapse should then start correctly.
Upgrading to v1.56.0
Open registration without verification is now disabled by default
Synapse will refuse to start if registration is enabled without email, captcha, or token-based verification unless the new config
flag enable_registration_without_verification
is set to "true".
Groups/communities feature has been deprecated
The non-standard groups/communities feature in Synapse has been deprecated and will be disabled by default in Synapse v1.58.0.
You can test disabling it by adding the following to your homeserver configuration:
experimental_features:
groups_enabled: false
Change in behaviour for PostgreSQL databases with unsafe locale
Synapse now refuses to start when using PostgreSQL with non-C
values for COLLATE
and
CTYPE
unless the config flag allow_unsafe_locale
, found in the database section of
the configuration file, is set to true
. See the PostgreSQL documentation
for more information and instructions on how to fix a database with incorrect values.
Upgrading to v1.55.0
synctl
script has been moved
The synctl
script
has been made an
entry point
and no longer exists at the root of Synapse's source tree. If you wish to use
synctl
to manage your homeserver, you should invoke synctl
directly, e.g.
synctl start
instead of ./synctl start
or /path/to/synctl start
.
You will need to ensure synctl
is on your PATH
.
- This is automatically the case when using Debian packages or docker images provided by Matrix.org.
- When installing from a wheel, sdist, or PyPI, a
synctl
executable is added to your Python installation'sbin
. This should be on yourPATH
automatically, though you might need to activate a virtual environment depending on how you installed Synapse.
Compatibility dropped for Mjolnir 1.3.1 and earlier
Synapse v1.55.0 drops support for Mjolnir 1.3.1 and earlier. If you use the Mjolnir module to moderate your homeserver, please upgrade Mjolnir to version 1.3.2 or later before upgrading Synapse.
Upgrading to v1.54.0
Legacy structured logging configuration removal
This release removes support for the structured: true
logging configuration
which was deprecated in Synapse v1.23.0. If your logging configuration contains
structured: true
then it should be modified based on the
structured logging documentation.
Upgrading to v1.53.0
Dropping support for webclient
listeners and non-HTTP(S) web_client_location
Per the deprecation notice in Synapse v1.51.0, listeners of type webclient
are no longer supported and configuring them is a now a configuration error.
Configuring a non-HTTP(S) web_client_location
configuration is is now a
configuration error. Since the webclient
listener is no longer supported, this
setting only applies to the root path /
of Synapse's web server and no longer
the /_matrix/client/
path.
Stablisation of MSC3231
The unstable validity-check endpoint for the Registration Tokens feature has been stabilised and moved from:
/_matrix/client/unstable/org.matrix.msc3231/register/org.matrix.msc3231.login.registration_token/validity
to:
/_matrix/client/v1/register/m.login.registration_token/validity
Please update any relevant reverse proxy or firewall configurations appropriately.
Time-based cache expiry is now enabled by default
Formerly, entries in the cache were not evicted regardless of whether they were accessed after storing.
This behavior has now changed. By default entries in the cache are now evicted after 30m of not being accessed.
To change the default behavior, go to the caches
section of the config and change the expire_caches
and
cache_entry_ttl
flags as necessary. Please note that these flags replace the expiry_time
flag in the config.
The expiry_time
flag will still continue to work, but it has been deprecated and will be removed in the future.
Deprecation of capability
org.matrix.msc3283.*
The capabilities
of MSC3283 from the REST API /_matrix/client/r0/capabilities
becomes stable.
The old capabilities
org.matrix.msc3283.set_displayname
,org.matrix.msc3283.set_avatar_url
andorg.matrix.msc3283.3pid_changes
are deprecated and scheduled to be removed in Synapse v1.54.0.
The new capabilities
m.set_displayname
,m.set_avatar_url
andm.3pid_changes
are now active by default.
Removal of user_may_create_room_with_invites
As announced with the release of Synapse 1.47.0,
the deprecated user_may_create_room_with_invites
module callback has been removed.
Modules relying on it can instead implement user_may_invite
and use the get_room_state
module API to infer whether the invite is happening while creating a room (see this function
as an example). Alternately, modules can also implement on_create_room
.
Upgrading to v1.52.0
Twisted security release
Note that Twisted 22.1.0
has recently been released, which fixes a security issue
within the Twisted library. We do not believe Synapse is affected by this vulnerability,
though we advise server administrators who installed Synapse via pip to upgrade Twisted
with pip install --upgrade Twisted treq
as a matter of good practice. The Docker image
matrixdotorg/synapse
and the Debian packages from packages.matrix.org
are using the
updated library.
Upgrading to v1.51.0
Deprecation of webclient
listeners and non-HTTP(S) web_client_location
Listeners of type webclient
are deprecated and scheduled to be removed in
Synapse v1.53.0.
Similarly, a non-HTTP(S) web_client_location
configuration is deprecated and
will become a configuration error in Synapse v1.53.0.
Upgrading to v1.50.0
Dropping support for old Python and Postgres versions
In line with our deprecation policy, we've dropped support for Python 3.6 and PostgreSQL 9.6, as they are no longer supported upstream.
This release of Synapse requires Python 3.7+ and PostgreSQL 10+.
Upgrading to v1.47.0
Removal of old Room Admin API
The following admin APIs were deprecated in Synapse 1.34 (released on 2021-05-17) and have now been removed:
POST /_synapse/admin/v1/<room_id>/delete
Any scripts still using the above APIs should be converted to use the Delete Room API.
Deprecation of the user_may_create_room_with_invites
module callback
The user_may_create_room_with_invites
is deprecated and will be removed in a future
version of Synapse. Modules implementing this callback can instead implement
user_may_invite
and use the get_room_state
module API method to infer whether the invite is happening in the context of creating a
room.
We plan to remove this callback in January 2022.
Upgrading to v1.45.0
Changes required to media storage provider modules when reading from the Synapse configuration object
Media storage provider modules that read from the Synapse configuration object (i.e. that
read the value of hs.config.[...]
) now need to specify the configuration section they're
reading from. This means that if a module reads the value of e.g. hs.config.media_store_path
,
it needs to replace it with hs.config.media.media_store_path
.
Upgrading to v1.44.0
The URL preview cache is no longer mirrored to storage providers
The url_cache/
and url_cache_thumbnails/
directories in the media store are
no longer mirrored to storage providers. These two directories can be safely
deleted from any configured storage providers to reclaim space.
Upgrading to v1.43.0
The spaces summary APIs can now be handled by workers
The available worker applications documentation
has been updated to reflect that calls to the /spaces
, /hierarchy
, and
/summary
endpoints can now be routed to workers for both client API and
federation requests.
Upgrading to v1.42.0
Removal of old Room Admin API
The following admin APIs were deprecated in Synapse 1.25 (released on 2021-01-13) and have now been removed:
POST /_synapse/admin/v1/purge_room
POST /_synapse/admin/v1/shutdown_room/<room_id>
Any scripts still using the above APIs should be converted to use the Delete Room API.
User-interactive authentication fallback templates can now display errors
This may affect you if you make use of custom HTML templates for the
reCAPTCHA (synapse/res/templates/recaptcha.html
) or
terms (synapse/res/templates/terms.html
) fallback pages.
The template is now provided an error
variable if the authentication
process failed. See the default templates linked above for an example.
Removal of out-of-date email pushers
Users will stop receiving message updates via email for addresses that were once, but not still, linked to their account.
Upgrading to v1.41.0
Add support for routing outbound HTTP requests via a proxy for federation
Since Synapse 1.6.0 (2019-11-26) you can set a proxy for outbound HTTP requests via http_proxy/https_proxy environment variables. This proxy was set for:
- push
- url previews
- phone-home stats
- recaptcha validation
- CAS auth validation
- OpenID Connect
- Federation (checking public key revocation)
In this version we have added support for outbound requests for:
- Outbound federation
- Downloading remote media
- Fetching public keys of other servers
These requests use the same proxy configuration. If you have a proxy configuration we
recommend to verify the configuration. It may be necessary to adjust the no_proxy
environment variable.
See using a forward proxy with Synapse documentation for details.
Deprecation of template_dir
The template_dir
settings in the sso
, account_validity
and email
sections of the
configuration file are now deprecated. Server admins should use the new
templates.custom_template_directory
setting in the configuration file and use one single
custom template directory for all aforementioned features. Template file names remain
unchanged. See the related documentation
for more information and examples.
We plan to remove support for these settings in October 2021.
/_synapse/admin/v1/users/{userId}/media
must be handled by media workers
The media repository worker documentation
has been updated to reflect that calls to /_synapse/admin/v1/users/{userId}/media
must now be handled by media repository workers. This is due to the new DELETE
method
of this endpoint modifying the media store.
Upgrading to v1.39.0
Deprecation of the current third-party rules module interface
The current third-party rules module interface is deprecated in favour of the new generic modules system introduced in Synapse v1.37.0. Authors of third-party rules modules can refer to this documentation to update their modules. Synapse administrators can refer to this documentation to update their configuration once the modules they are using have been updated.
We plan to remove support for the current third-party rules interface in September 2021.
Upgrading to v1.38.0
Re-indexing of events
table on Postgres databases
This release includes a database schema update which requires re-indexing one of
the larger tables in the database, events
. This could result in increased
disk I/O for several hours or days after upgrading while the migration
completes. Furthermore, because we have to keep the old indexes until the new
indexes are ready, it could result in a significant, temporary, increase in
disk space.
To get a rough idea of the disk space required, check the current size of one
of the indexes. For example, from a psql
shell, run the following sql:
SELECT pg_size_pretty(pg_relation_size('events_order_room'));
We need to rebuild four indexes, so you will need to multiply this result by four to give an estimate of the disk space required. For example, on one particular server:
synapse=# select pg_size_pretty(pg_relation_size('events_order_room'));
pg_size_pretty
----------------
288 MB
(1 row)
On this server, it would be wise to ensure that at least 1152MB are free.
The additional disk space will be freed once the migration completes.
SQLite databases are unaffected by this change.
Upgrading to v1.37.0
Deprecation of the current spam checker interface
The current spam checker interface is deprecated in favour of a new generic modules system. Authors of spam checker modules can refer to [this documentation](modules/porting_legacy_module.md to update their modules. Synapse administrators can refer to this documentation to update their configuration once the modules they are using have been updated.
We plan to remove support for the current spam checker interface in August 2021.
More module interfaces will be ported over to this new generic system in future versions of Synapse.
Upgrading to v1.34.0
room_invite_state_types
configuration setting
The room_invite_state_types
configuration setting has been deprecated
and replaced with room_prejoin_state
. See the sample configuration
file.
If you have set room_invite_state_types
to the default value you
should simply remove it from your configuration file. The default value
used to be:
room_invite_state_types:
- "m.room.join_rules"
- "m.room.canonical_alias"
- "m.room.avatar"
- "m.room.encryption"
- "m.room.name"
If you have customised this value, you should remove
room_invite_state_types
and configure room_prejoin_state
instead.
Upgrading to v1.33.0
Account Validity HTML templates can now display a user's expiration date
This may affect you if you have enabled the account validity feature,
and have made use of a custom HTML template specified by the
account_validity.template_dir
or
account_validity.account_renewed_html_path
Synapse config options.
The template can now accept an expiration_ts
variable, which
represents the unix timestamp in milliseconds for the future date of
which their account has been renewed until. See the default
template
for an example of usage.
ALso note that a new HTML template, account_previously_renewed.html
,
has been added. This is is shown to users when they attempt to renew
their account with a valid renewal token that has already been used
before. The default template contents can been found
here,
and can also accept an expiration_ts
variable. This template replaces
the error message users would previously see upon attempting to use a
valid renewal token more than once.
Upgrading to v1.32.0
Regression causing connected Prometheus instances to become overwhelmed
This release introduces a regression that can overwhelm connected Prometheus instances. This issue is not present in Synapse v1.32.0rc1.
If you have been affected, please downgrade to 1.31.0. You then may need to remove excess writeahead logs in order for Prometheus to recover. Instructions for doing so are provided here.
Dropping support for old Python, Postgres and SQLite versions
In line with our deprecation policy, we've dropped support for Python 3.5 and PostgreSQL 9.5, as they are no longer supported upstream.
This release of Synapse requires Python 3.6+ and PostgresSQL 9.6+ or SQLite 3.22+.
Removal of old List Accounts Admin API
The deprecated v1 "list accounts" admin API
(GET /_synapse/admin/v1/users/<user_id>
) has been removed in this
version.
The v2 list accounts API
has been available since Synapse 1.7.0 (2019-12-13), and is accessible
under GET /_synapse/admin/v2/users
.
The deprecation of the old endpoint was announced with Synapse 1.28.0 (released on 2021-02-25).
Application Services must use type m.login.application_service
when registering users
In compliance with the Application Service
spec,
Application Services are now required to use the
m.login.application_service
type when registering users via the
/_matrix/client/r0/register
endpoint. This behaviour was deprecated in
Synapse v1.30.0.
Please ensure your Application Services are up to date.
Upgrading to v1.29.0
Requirement for X-Forwarded-Proto header
When using Synapse with a reverse proxy (in particular, when using the
x_forwarded
option on an HTTP listener), Synapse now
expects to receive an X-Forwarded-Proto
header on incoming
HTTP requests. If it is not set, Synapse will log a warning on each
received request.
To avoid the warning, administrators using a reverse proxy should ensure
that the reverse proxy sets X-Forwarded-Proto
header to
https
or http
to indicate the protocol used
by the client.
Synapse also requires the Host
header to be preserved.
See the reverse proxy documentation, where the example configurations have been updated to show how to set these headers.
(Users of Caddy are unaffected, since we
believe it sets X-Forwarded-Proto
by default.)
Upgrading to v1.27.0
Changes to callback URI for OAuth2 / OpenID Connect and SAML2
This version changes the URI used for callbacks from OAuth2 and SAML2 identity providers:
-
If your server is configured for single sign-on via an OpenID Connect or OAuth2 identity provider, you will need to add
[synapse public baseurl]/_synapse/client/oidc/callback
to the list of permitted "redirect URIs" at the identity provider.See the OpenID docs for more information on setting up OpenID Connect.
-
If your server is configured for single sign-on via a SAML2 identity provider, you will need to add
[synapse public baseurl]/_synapse/client/saml2/authn_response
as a permitted "ACS location" (also known as "allowed callback URLs") at the identity provider.The "Issuer" in the "AuthnRequest" to the SAML2 identity provider is also updated to
[synapse public baseurl]/_synapse/client/saml2/metadata.xml
. If your SAML2 identity provider uses this property to validate or otherwise identify Synapse, its configuration will need to be updated to use the new URL. Alternatively you could create a new, separate "EntityDescriptor" in your SAML2 identity provider with the new URLs and leave the URLs in the existing "EntityDescriptor" as they were.
Changes to HTML templates
The HTML templates for SSO and email notifications now have Jinja2's
autoescape
enabled for files ending in .html
, .htm
, and .xml
. If you have
customised these templates and see issues when viewing them you might
need to update them. It is expected that most configurations will need
no changes.
If you have customised the templates names for these templates, it is
recommended to verify they end in .html
to ensure autoescape is
enabled.
The above applies to the following templates:
add_threepid.html
add_threepid_failure.html
add_threepid_success.html
notice_expiry.html
notice_expiry.html
notif_mail.html
(which, by default, includesroom.html
andnotif.html
)password_reset.html
password_reset_confirmation.html
password_reset_failure.html
password_reset_success.html
registration.html
registration_failure.html
registration_success.html
sso_account_deactivated.html
sso_auth_bad_user.html
sso_auth_confirm.html
sso_auth_success.html
sso_error.html
sso_login_idp_picker.html
sso_redirect_confirm.html
Upgrading to v1.26.0
Rolling back to v1.25.0 after a failed upgrade
v1.26.0 includes a lot of large changes. If something problematic occurs, you may want to roll-back to a previous version of Synapse. Because v1.26.0 also includes a new database schema version, reverting that version is also required alongside the generic rollback instructions mentioned above. In short, to roll back to v1.25.0 you need to:
-
Stop the server
-
Decrease the schema version in the database:
UPDATE schema_version SET version = 58;
-
Delete the ignored users & chain cover data:
DROP TABLE IF EXISTS ignored_users; UPDATE rooms SET has_auth_chain_index = false;
For PostgreSQL run:
TRUNCATE event_auth_chain_links; TRUNCATE event_auth_chains;
For SQLite run:
DELETE FROM event_auth_chain_links; DELETE FROM event_auth_chains;
-
Mark the deltas as not run (so they will re-run on upgrade).
DELETE FROM applied_schema_deltas WHERE version = 59 AND file = "59/01ignored_user.py"; DELETE FROM applied_schema_deltas WHERE version = 59 AND file = "59/06chain_cover_index.sql";
-
Downgrade Synapse by following the instructions for your installation method in the "Rolling back to older versions" section above.
Upgrading to v1.25.0
Last release supporting Python 3.5
This is the last release of Synapse which guarantees support with Python 3.5, which passed its upstream End of Life date several months ago.
We will attempt to maintain support through March 2021, but without guarantees.
In the future, Synapse will follow upstream schedules for ending support of older versions of Python and PostgreSQL. Please upgrade to at least Python 3.6 and PostgreSQL 9.6 as soon as possible.
Blacklisting IP ranges
Synapse v1.25.0 includes new settings, ip_range_blacklist
and
ip_range_whitelist
, for controlling outgoing requests from Synapse for
federation, identity servers, push, and for checking key validity for
third-party invite events. The previous setting,
federation_ip_range_blacklist
, is deprecated. The new
ip_range_blacklist
defaults to private IP ranges if it is not defined.
If you have never customised federation_ip_range_blacklist
it is
recommended that you remove that setting.
If you have customised federation_ip_range_blacklist
you should update
the setting name to ip_range_blacklist
.
If you have a custom push server that is reached via private IP space
you may need to customise ip_range_blacklist
or ip_range_whitelist
.
Upgrading to v1.24.0
Custom OpenID Connect mapping provider breaking change
This release allows the OpenID Connect mapping provider to perform normalisation of the localpart of the Matrix ID. This allows for the mapping provider to specify different algorithms, instead of the default way.
If your Synapse configuration uses a custom mapping provider
(oidc_config.user_mapping_provider.module
is specified and
not equal to
synapse.handlers.oidc_handler.JinjaOidcMappingProvider
)
then you must ensure that map_user_attributes
of the
mapping provider performs some normalisation of the
localpart
returned. To match previous behaviour you can
use the map_username_to_mxid_localpart
function provided
by Synapse. An example is shown below:
from synapse.types import map_username_to_mxid_localpart
class MyMappingProvider:
def map_user_attributes(self, userinfo, token):
# ... your custom logic ...
sso_user_id = ...
localpart = map_username_to_mxid_localpart(sso_user_id)
return {"localpart": localpart}
Removal historical Synapse Admin API
Historically, the Synapse Admin API has been accessible under:
/_matrix/client/api/v1/admin
/_matrix/client/unstable/admin
/_matrix/client/r0/admin
/_synapse/admin/v1
The endpoints with /_matrix/client/*
prefixes have been removed as of
v1.24.0. The Admin API is now only accessible under:
/_synapse/admin/v1
The only exception is the /admin/whois
endpoint, which is
also available via the client-server
API.
The deprecation of the old endpoints was announced with Synapse 1.20.0 (released on 2020-09-22) and makes it easier for homeserver admins to lock down external access to the Admin API endpoints.
Upgrading to v1.23.0
Structured logging configuration breaking changes
This release deprecates use of the structured: true
logging
configuration for structured logging. If your logging configuration
contains structured: true
then it should be modified based on the
structured logging documentation.
The structured
and drains
logging options are now deprecated and
should be replaced by standard logging configuration of handlers
and
formatters
.
A future will release of Synapse will make using structured: true
an
error.
Upgrading to v1.22.0
ThirdPartyEventRules breaking changes
This release introduces a backwards-incompatible change to modules
making use of ThirdPartyEventRules
in Synapse. If you make use of a
module defined under the third_party_event_rules
config option, please
make sure it is updated to handle the below change:
The http_client
argument is no longer passed to modules as they are
initialised. Instead, modules are expected to make use of the
http_client
property on the ModuleApi
class. Modules are now passed
a module_api
argument during initialisation, which is an instance of
ModuleApi
. ModuleApi
instances have a http_client
property which
acts the same as the http_client
argument previously passed to
ThirdPartyEventRules
modules.
Upgrading to v1.21.0
Forwarding /_synapse/client
through your reverse proxy
The reverse proxy documentation
has been updated to include reverse proxy directives for
/_synapse/client/*
endpoints. As the user password reset flow now uses
endpoints under this prefix, you must update your reverse proxy
configurations for user password reset to work.
Additionally, note that the Synapse worker documentation has been updated to
: state that the /_synapse/client/password_reset/email/submit_token
endpoint can be handled
by all workers. If you make use of Synapse's worker feature, please update your reverse proxy configuration to reflect this change.
New HTML templates
A new HTML template,
password_reset_confirmation.html,
has been added to the synapse/res/templates
directory. If you are
using a custom template directory, you may want to copy the template
over and modify it.
Note that as of v1.20.0, templates do not need to be included in custom template directories for Synapse to start. The default templates will be used if a custom template cannot be found.
This page will appear to the user after clicking a password reset link that has been emailed to them.
To complete password reset, the page must include a way to make a
POST
request to
/_synapse/client/password_reset/{medium}/submit_token
with the query
parameters from the original link, presented as a URL-encoded form. See
the file itself for more details.
Updated Single Sign-on HTML Templates
The saml_error.html
template was removed from Synapse and replaced
with the sso_error.html
template. If your Synapse is configured to use
SAML and a custom sso_redirect_confirm_template_dir
configuration then
any customisations of the saml_error.html
template will need to be
merged into the sso_error.html
template. These templates are similar,
but the parameters are slightly different:
- The
msg
parameter should be renamed toerror_description
. - There is no longer a
code
parameter for the response code. - A string
error
parameter is available that includes a short hint of why a user is seeing the error page.
Upgrading to v1.18.0
Docker -py3
suffix will be removed in future versions
From 10th August 2020, we will no longer publish Docker images with the
-py3
tag suffix. The images tagged with the
-py3
suffix have been identical to the non-suffixed tags
since release 0.99.0, and the suffix is obsolete.
On 10th August, we will remove the latest-py3
tag.
Existing per-release tags (such as v1.18.0-py3
will not
be removed, but no new -py3
tags will be added.
Scripts relying on the -py3
suffix will need to be
updated.
Redis replication is now recommended in lieu of TCP replication
When setting up worker processes, we now recommend the use of a Redis server for replication. The old direct TCP connection method is deprecated and will be removed in a future release. See the worker documentation for more details.
Upgrading to v1.14.0
This version includes a database update which is run as part of the upgrade, and which may take a couple of minutes in the case of a large server. Synapse will not respond to HTTP requests while this update is taking place.
Upgrading to v1.13.0
Incorrect database migration in old synapse versions
A bug was introduced in Synapse 1.4.0 which could cause the room directory to be incomplete or empty if Synapse was upgraded directly from v1.2.1 or earlier, to versions between v1.4.0 and v1.12.x.
This will not be a problem for Synapse installations which were:
: - created at v1.4.0 or later, - upgraded via v1.3.x, or - upgraded straight from v1.2.1 or earlier to v1.13.0 or later.
If completeness of the room directory is a concern, installations which are affected can be repaired as follows:
-
Run the following sql from a
psql
orsqlite3
console:INSERT INTO background_updates (update_name, progress_json, depends_on) VALUES ('populate_stats_process_rooms', '{}', 'current_state_events_membership'); INSERT INTO background_updates (update_name, progress_json, depends_on) VALUES ('populate_stats_process_users', '{}', 'populate_stats_process_rooms');
-
Restart synapse.
New Single Sign-on HTML Templates
New templates (sso_auth_confirm.html
, sso_auth_success.html
, and
sso_account_deactivated.html
) were added to Synapse. If your Synapse
is configured to use SSO and a custom
sso_redirect_confirm_template_dir
configuration then these templates
will need to be copied from
synapse/res/templates
into that directory.
Synapse SSO Plugins Method Deprecation
Plugins using the complete_sso_login
method of
synapse.module_api.ModuleApi
should update to using the async/await
version complete_sso_login_async
which includes additional checks. The
non-async version is considered deprecated.
Rolling back to v1.12.4 after a failed upgrade
v1.13.0 includes a lot of large changes. If something problematic occurs, you may want to roll-back to a previous version of Synapse. Because v1.13.0 also includes a new database schema version, reverting that version is also required alongside the generic rollback instructions mentioned above. In short, to roll back to v1.12.4 you need to:
-
Stop the server
-
Decrease the schema version in the database:
UPDATE schema_version SET version = 57;
-
Downgrade Synapse by following the instructions for your installation method in the "Rolling back to older versions" section above.
Upgrading to v1.12.0
This version includes a database update which is run as part of the upgrade, and which may take some time (several hours in the case of a large server). Synapse will not respond to HTTP requests while this update is taking place.
This is only likely to be a problem in the case of a server which is participating in many rooms.
-
As with all upgrades, it is recommended that you have a recent backup of your database which can be used for recovery in the event of any problems.
-
As an initial check to see if you will be affected, you can try running the following query from the
psql
orsqlite3
console. It is safe to run it while Synapse is still running.SELECT MAX(q.v) FROM ( SELECT ( SELECT ej.json AS v FROM state_events se INNER JOIN event_json ej USING (event_id) WHERE se.room_id=rooms.room_id AND se.type='m.room.create' AND se.state_key='' LIMIT 1 ) FROM rooms WHERE rooms.room_version IS NULL ) q;
This query will take about the same amount of time as the upgrade process: ie, if it takes 5 minutes, then it is likely that Synapse will be unresponsive for 5 minutes during the upgrade.
If you consider an outage of this duration to be acceptable, no further action is necessary and you can simply start Synapse 1.12.0.
If you would prefer to reduce the downtime, continue with the steps below.
-
The easiest workaround for this issue is to manually create a new index before upgrading. On PostgreSQL, his can be done as follows:
CREATE INDEX CONCURRENTLY tmp_upgrade_1_12_0_index ON state_events(room_id) WHERE type = 'm.room.create';
The above query may take some time, but is also safe to run while Synapse is running.
We assume that no SQLite users have databases large enough to be affected. If you are affected, you can run a similar query, omitting the
CONCURRENTLY
keyword. Note however that this operation may in itself cause Synapse to stop running for some time. Synapse admins are reminded that SQLite is not recommended for use outside a test environment. -
Once the index has been created, the
SELECT
query in step 1 above should complete quickly. It is therefore safe to upgrade to Synapse 1.12.0. -
Once Synapse 1.12.0 has successfully started and is responding to HTTP requests, the temporary index can be removed:
DROP INDEX tmp_upgrade_1_12_0_index;
Upgrading to v1.10.0
Synapse will now log a warning on start up if used with a PostgreSQL database that has a non-recommended locale set.
See Postgres for details.
Upgrading to v1.8.0
Specifying a log_file
config option will now cause Synapse to refuse
to start, and should be replaced by with the log_config
option.
Support for the log_file
option was removed in v1.3.0 and has since
had no effect.
Upgrading to v1.7.0
In an attempt to configure Synapse in a privacy preserving way, the
default behaviours of allow_public_rooms_without_auth
and
allow_public_rooms_over_federation
have been inverted. This means that
by default, only authenticated users querying the Client/Server API will
be able to query the room directory, and relatedly that the server will
not share room directory information with other servers over federation.
If your installation does not explicitly set these settings one way or
the other and you want either setting to be true
then it will
necessary to update your homeserver configuration file accordingly.
For more details on the surrounding context see our explainer.
Upgrading to v1.5.0
This release includes a database migration which may take several
minutes to complete if there are a large number (more than a million or
so) of entries in the devices
table. This is only likely to a be a
problem on very large installations.
Upgrading to v1.4.0
New custom templates
If you have configured a custom template directory with the
email.template_dir
option, be aware that there are new templates
regarding registration and threepid management (see below) that must be
included.
registration.html
andregistration.txt
registration_success.html
andregistration_failure.html
add_threepid.html
andadd_threepid.txt
add_threepid_failure.html
andadd_threepid_success.html
Synapse will expect these files to exist inside the configured template directory, and will fail to start if they are absent. To view the default templates, see synapse/res/templates.
3pid verification changes
Note: As of this release, users will be unable to add phone numbers or email addresses to their accounts, without changes to the Synapse configuration. This includes adding an email address during registration.
It is possible for a user to associate an email address or phone number with their account, for a number of reasons:
- for use when logging in, as an alternative to the user id.
- in the case of email, as an alternative contact to help with account recovery.
- in the case of email, to receive notifications of missed messages.
Before an email address or phone number can be added to a user's account, or before such an address is used to carry out a password-reset, Synapse must confirm the operation with the owner of the email address or phone number. It does this by sending an email or text giving the user a link or token to confirm receipt. This process is known as '3pid verification'. ('3pid', or 'threepid', stands for third-party identifier, and we use it to refer to external identifiers such as email addresses and phone numbers.)
Previous versions of Synapse delegated the task of 3pid verification to
an identity server by default. In most cases this server is vector.im
or matrix.org
.
In Synapse 1.4.0, for security and privacy reasons, the homeserver will no longer delegate this task to an identity server by default. Instead, the server administrator will need to explicitly decide how they would like the verification messages to be sent.
In the medium term, the vector.im
and matrix.org
identity servers
will disable support for delegated 3pid verification entirely. However,
in order to ease the transition, they will retain the capability for a
limited period. Delegated email verification will be disabled on Monday
2nd December 2019 (giving roughly 2 months notice). Disabling delegated
SMS verification will follow some time after that once SMS verification
support lands in Synapse.
Once delegated 3pid verification support has been disabled in the
vector.im
and matrix.org
identity servers, all Synapse versions that
depend on those instances will be unable to verify email and phone
numbers through them. There are no imminent plans to remove delegated
3pid verification from Sydent generally. (Sydent is the identity server
project that backs the vector.im
and matrix.org
instances).
Following upgrade, to continue verifying email (e.g. as part of the registration process), admins can either:-
- Configure Synapse to use an email server.
- Run or choose an identity server which allows delegated email verification and delegate to it.
Configure SMTP in Synapse
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
.
See the sample configuration file for more details on these settings.
Delegate email to an identity server
Some admins will wish to continue using email verification as part of the registration process, but will not immediately have an appropriate SMTP server at hand.
To this end, we will continue to support email verification delegation
via the vector.im
and matrix.org
identity servers for two months.
Support for delegated email verification will be disabled on Monday 2nd
December.
The account_threepid_delegates
dictionary defines whether the
homeserver should delegate an external server (typically an identity
server) to handle
sending confirmation messages via email and SMS.
So to delegate email verification, in homeserver.yaml
, set
account_threepid_delegates.email
to the base URL of an identity
server. For example:
account_threepid_delegates:
email: https://example.com # Delegate email sending to example.com
Note that account_threepid_delegates.email
replaces the deprecated
email.trust_identity_server_for_password_resets
: 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 report an
error and refuse to start.
If email.trust_identity_server_for_password_resets
is false
or
absent and no email
delegate is configured in
account_threepid_delegates
, then Synapse will send email verification
messages itself, using the configured SMTP server (see above). that
type.
Phone numbers
Synapse does not support phone-number verification itself, so the only
way to maintain the ability for users to add phone numbers to their
accounts will be by continuing to delegate phone number verification to
the matrix.org
and vector.im
identity servers (or another identity
server that supports SMS sending).
The account_threepid_delegates
dictionary defines whether the
homeserver should delegate an external server (typically an identity
server) to handle
sending confirmation messages via email and SMS.
So to delegate phone number verification, in homeserver.yaml
, set
account_threepid_delegates.msisdn
to the base URL of an identity
server. For example:
account_threepid_delegates:
msisdn: https://example.com # Delegate sms sending to example.com
The matrix.org
and vector.im
identity servers will continue to
support delegated phone number verification via SMS until such time as
it is possible for admins to configure their servers to perform phone
number verification directly. More details will follow in a future
release.
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), 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
: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 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.
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 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.
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
tofalse
. - Configure a whitelist of server domains to trust via
federation_certificate_verification_whitelist
.
See the sample configuration file for more details on these settings.
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 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.
Upgrading to v0.34.0
-
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 theRotatingFileHandler
configuration (if you have one) in your<server>.log.config
file. For example, if yourlog.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 before doing so. The existingmatrix-synapse
packages will continue to use Python 2 for the time being. -
-
This release removes the
riot.im
from the default list of trusted identity servers.If
riot.im
is in your homeserver's list oftrusted_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. -
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.