diff --git a/CHANGELOG.md b/CHANGELOG.md index 90b9b8f76..37032735e 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,12 +1,14 @@ # 2022-09-15 -## (Potential Backward Compatibility Break) Major changes to Synapse workers +## (Potential Backward Compatibility Break) Major improvements to Synapse workers People who are interested in running a Synapse worker setup should know that **our Synapse worker implementation is much more powerful now**: - we've added support for [Stream writers](#stream-writers-support) - we've added support for [multiple federation sender workers](#multiple-federation-sender-workers-support) - we've added support for [multiple pusher workers](#multiple-pusher-workers-support) +- we've restored support for [`appservice` workers](#appservice-worker-support-is-back) +- we've restored support for [`user_dir` workers](#user-directory-worker-support-is-back) - see the [Potential Backward Incompatibilities after these Synapse worker changes](#potential-backward-incompatibilities-after-these-synapse-worker-changes) ### Stream writers support @@ -38,6 +40,25 @@ From now on, you can have as many as you want to help with your federation traff Until now, we only supported a single `pusher` worker (`matrix_synapse_workers_pusher_workers_count` could either be `0` or `1`). From now on, you can have as many as you want to help with pushing notifications out. +### Appservice worker support is back + +We previously had an `appservice` worker type, which [Synapse deprecated in v1.59.0](https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types). So did we, at the time. + +The new way to implement such workers is by using a `generic_worker` and dedicating it to the task of talking to Application Services. +From now on, we have support for this. + +With `matrix_synapse_workers_preset: one-of-each`, you'll get one `appserice` worker automatically. +You can also control the `appserice` workers count with `matrix_synapse_workers_appserice_workers_count`. Only `0` or `1` workers of this type are supported by Synapse. + +### User Directory worker support is back + +We previously had a `user_dir` worker type, which [Synapse deprecated in v1.59.0](https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types). So did we, at the time. + +The new way to implement such workers is by using a `generic_worker` and dedicating it to the task of serving the user directory. +From now on, we have support for this. + +With `matrix_synapse_workers_preset: one-of-each`, you'll get one `user_dir` worker automatically. +You can also control the `user_dir` workers count with `matrix_synapse_workers_user_dir_workers_count`. Only `0` or `1` workers of this type are supported by Synapse. ### Potential Backward Incompatibilities after these Synapse worker changes @@ -45,6 +66,8 @@ Below we'll discuss **potential backward incompatibilities**. - **Worker names** (container names, systemd services, worker configuration files) **have changed**. Workers are now labeled sequentially (e.g. `matrix-synapse-worker_generic_worker-18111` -> `matrix-synapse-worker-generic-0`). The playbook will handle these changes automatically. +- Due to increased worker types support above, people who use `matrix_synapse_workers_preset: one-of-each` should be aware that with these changes, **the playbook will deploy 8 additional workers** (6 stream writers, 1 `appservice` worker, 1 `user_dir` worker). This **may increase RAM/CPU usage**, etc. If you find your server struggling, consider disabling some workers with the appropriate `matrix_synapse_workers_*_workers_count` variables. + - **Metric endpoints have also changed** (`/metrics/synapse/worker/generic_worker-18111` -> `/metrics/synapse/worker/generic-worker-0`). If you're [collecting metrics to an external Prometheus server](docs/configuring-playbook-prometheus-grafana.md#collecting-metrics-to-an-external-prometheus-server), consider revisiting our [Collecting Synapse worker metrics to an external Prometheus server](docs/configuring-playbook-prometheus-grafana.md#collecting-synapse-worker-metrics-to-an-external-prometheus-server) docs and updating your Prometheus configuration. **If you're collecting metrics to the integrated Prometheus server** (not enabled by default), **your Prometheus configuration will be updated automatically**. Old data (from before this change) may stick around though. - **the format of `matrix_synapse_workers_enabled_list` has changed**. You were never advised to use this variable for directly creating workers (we advise people to control workers using `matrix_synapse_workers_preset` or by tweaking `matrix_synapse_workers_*_workers_count` variables only), but some people may have started using the `matrix_synapse_workers_enabled_list` variable to gain more control over workers. If you're one of them, you'll need to adjust its value. See `roles/matrix-synapse/defaults/main.yml` for more information on the new format. The playbook will also do basic validation and complain if you got something wrong. diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers index e891a3d9a..78d1ed68a 100755 --- a/group_vars/matrix_servers +++ b/group_vars/matrix_servers @@ -1766,7 +1766,7 @@ matrix_nginx_proxy_synapse_stream_writer_account_data_stream_worker_client_serve matrix_nginx_proxy_synapse_stream_writer_receipts_stream_worker_client_server_locations: "{{ matrix_synapse_workers_stream_writer_receipts_stream_worker_client_server_endpoints }}" matrix_nginx_proxy_synapse_stream_writer_presence_stream_worker_client_server_locations: "{{ matrix_synapse_workers_stream_writer_presence_stream_worker_client_server_endpoints }}" matrix_nginx_proxy_synapse_media_repository_locations: "{{matrix_synapse_workers_media_repository_endpoints|default([]) }}" -matrix_nginx_proxy_synapse_user_dir_locations: "{{ matrix_synapse_workers_user_dir_endpoints|default([]) }}" +matrix_nginx_proxy_synapse_user_dir_locations: "{{ matrix_synapse_workers_user_dir_worker_client_server_endpoints|default([]) }}" matrix_nginx_proxy_systemd_wanted_services_list: | {{ diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2 index bbce7462b..488ced5a8 100644 --- a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2 +++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-synapse.conf.j2 @@ -133,8 +133,9 @@ server { {% endif %} {% if user_dir_workers | length > 0 %} - # FIXME: obsolete if matrix_nginx_proxy_proxy_matrix_user_directory_search_enabled is set - # https://github.com/matrix-org/synapse/blob/master/docs/workers.md#synapseappuser_dir + # https://matrix-org.github.io/synapse/latest/workers.html#updating-the-user-directory + # If matrix_nginx_proxy_proxy_matrix_user_directory_search_enabled is set, requests may not reach here, + # but could be captured early on (see `matrix-domain.conf.j2`) and forwarded elsewhere (to an identity server, etc.). {{ render_locations_to_upstream(matrix_nginx_proxy_synapse_user_dir_locations, 'user_dir_workers_upstream') }} {% endif %} {# Workers redirects END #} diff --git a/roles/matrix-synapse/defaults/main.yml b/roles/matrix-synapse/defaults/main.yml index 05cd767a6..7f6ce40fa 100644 --- a/roles/matrix-synapse/defaults/main.yml +++ b/roles/matrix-synapse/defaults/main.yml @@ -394,9 +394,9 @@ matrix_synapse_workers_presets: little-federation-helper: generic_workers_count: 0 pusher_workers_count: 0 - appservice_workers_count: 0 federation_sender_workers_count: 1 media_repository_workers_count: 0 + appservice_workers_count: 0 user_dir_workers_count: 0 stream_writer_events_stream_workers_count: 0 stream_writer_typing_stream_workers_count: 0 @@ -407,14 +407,10 @@ matrix_synapse_workers_presets: one-of-each: generic_workers_count: 1 pusher_workers_count: 1 - # appservice workers are deprecated since Synapse v1.59. This will be removed. - appservice_workers_count: 0 federation_sender_workers_count: 1 media_repository_workers_count: 1 - # Disabled until https://github.com/matrix-org/synapse/issues/8787 is resolved. - # user_dir workers are deprecated since Synapse v1.59. This will be removed. - # See: https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types - user_dir_workers_count: 0 + appservice_workers_count: 1 + user_dir_workers_count: 1 stream_writer_events_stream_workers_count: 1 stream_writer_typing_stream_workers_count: 1 stream_writer_to_device_stream_workers_count: 1 @@ -513,12 +509,6 @@ matrix_synapse_federation_pusher_instances: [] # Adjusting this value manually is generally not necessary. matrix_synapse_start_pushers: "{{ not matrix_synapse_workers_enabled or (matrix_synapse_workers_enabled_list | selectattr('type', 'equalto', 'pusher') | list | length > 0) }}" -# matrix_synapse_workers_appservice_workers_count can only be 0 or 1. More instances are not supported. -# appservice workers are deprecated since Synapse v1.59. This will be removed. -# See: https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types -matrix_synapse_workers_appservice_workers_count: 0 -matrix_synapse_workers_appservice_workers_metrics_range_start: 19300 - # matrix_synapse_workers_federation_sender_workers_count controls the number of federation sender workers to spawn. # See https://matrix-org.github.io/synapse/latest/workers.html#synapseappfederation_sender matrix_synapse_workers_federation_sender_workers_count: "{{ matrix_synapse_workers_presets[matrix_synapse_workers_preset]['federation_sender_workers_count'] }}" @@ -543,13 +533,27 @@ matrix_synapse_workers_media_repository_workers_metrics_range_start: 19551 # Adjusting this value manually is generally not necessary. matrix_synapse_enable_media_repo: "{{ not matrix_synapse_workers_enabled or (matrix_synapse_workers_enabled_list | selectattr('type', 'equalto', 'media_repository') | list | length > 0) }}" -# Disabled until https://github.com/matrix-org/synapse/issues/8787 is resolved. -# user_dir workers are deprecated since Synapse v1.59. This will be removed. -# See: https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types -matrix_synapse_workers_user_dir_workers_count: 0 +# matrix_synapse_workers_appservice_workers_count can only be 0 or 1. More instances are not supported. +# appservice workers were deprecated since Synapse v1.59 (see: https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types). +# Our implementation uses generic worker services and assigns them to perform appservice work using the `notify_appservices_from_worker` Synapse option. +matrix_synapse_workers_appservice_workers_count: "{{ matrix_synapse_workers_presets[matrix_synapse_workers_preset]['appservice_workers_count'] }}" +matrix_synapse_workers_appservice_workers_metrics_range_start: 19300 + +# matrix_synapse_notify_appservices_from_worker populates the `notify_appservices_from_worker` Synapse configuration used when Synapse workers are in use (`matrix_synapse_workers_enabled`). +# `notify_appservices_from_worker` is meant to point to a worker, which is dedicated to sending output traffic to Application Services. +matrix_synapse_notify_appservices_from_worker: "{{ (matrix_synapse_workers_enabled_list | selectattr('type', 'equalto', 'appservice') | list)[0].name if (matrix_synapse_workers_enabled and matrix_synapse_workers_enabled_list | selectattr('type', 'equalto', 'appservice') | list | length > 0) else '' }}" + +# matrix_synapse_workers_user_dir_workers_count can only be 0 or 1. More instances are not supported. +# user_dir workers were deprecated since Synapse v1.59 (see: https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types). +# Our implementation uses generic worker services and assigns them to perform appservice work using the `update_user_directory_from_worker` Synapse option. +matrix_synapse_workers_user_dir_workers_count: "{{ matrix_synapse_workers_presets[matrix_synapse_workers_preset]['user_dir_workers_count'] }}" matrix_synapse_workers_user_dir_workers_port_range_start: 18661 matrix_synapse_workers_user_dir_workers_metrics_range_start: 19661 +# matrix_synapse_update_user_directory_from_worker populates the `update_user_directory_from_worker` Synapse configuration used when Synapse workers are in use (`matrix_synapse_workers_enabled`). +# `update_user_directory_from_worker` is meant to point to a worker, which is dedicated to updating the user directory and servicing some user directory URL endpoints (`matrix_synapse_workers_user_dir_worker_client_server_endpoints`). +matrix_synapse_update_user_directory_from_worker: "{{ (matrix_synapse_workers_enabled_list | selectattr('type', 'equalto', 'user_dir') | list)[0].name if (matrix_synapse_workers_enabled and matrix_synapse_workers_enabled_list | selectattr('type', 'equalto', 'user_dir') | list | length > 0) else '' }}" + # Default list of workers to spawn. # # Unless you populate this manually, this list is dynamically generated diff --git a/roles/matrix-synapse/tasks/synapse/workers/init.yml b/roles/matrix-synapse/tasks/synapse/workers/init.yml index 6ab6784f3..c5a532979 100644 --- a/roles/matrix-synapse/tasks/synapse/workers/init.yml +++ b/roles/matrix-synapse/tasks/synapse/workers/init.yml @@ -58,8 +58,6 @@ matrix_synapse_federation_sender_instances: "{{ matrix_synapse_federation_sender_instances + [item.ansible_facts.worker.name] }}" with_items: "{{ matrix_synapse_workers_list_results_federation_sender_workers.results }}" -- debug: var="matrix_synapse_federation_sender_instances" - # This type of worker can only have a count of 1, at most - name: Build pusher workers ansible.builtin.set_fact: @@ -81,13 +79,27 @@ id: "appservice-{{ item }}" name: "matrix-synapse-worker-appservice-{{ item }}" type: 'appservice' - app: 'appservice' + app: 'generic_worker' webserving: false port: 0 metrics_port: "{{ matrix_synapse_workers_appservice_workers_metrics_range_start + item }}" register: "matrix_synapse_workers_list_results_appservice_workers" loop: "{{ range(0, matrix_synapse_workers_appservice_workers_count | int) | list }}" +# This type of worker can only have a count of 1, at most +- name: Build user_dir workers + ansible.builtin.set_fact: + worker: + id: "user-dir-{{ item }}" + name: "matrix-synapse-worker-user-dir-{{ item }}" + type: 'user_dir' + app: 'generic_worker' + webserving: true + port: "{{ matrix_synapse_workers_user_dir_workers_port_range_start + item }}" + metrics_port: "{{ matrix_synapse_workers_user_dir_workers_metrics_range_start + item }}" + register: "matrix_synapse_workers_list_results_user_dir_workers" + loop: "{{ range(0, matrix_synapse_workers_user_dir_workers_count | int) | list }}" + - name: Build media_repository workers ansible.builtin.set_fact: worker: @@ -115,6 +127,8 @@ + matrix_synapse_workers_list_results_appservice_workers.results + + matrix_synapse_workers_list_results_user_dir_workers.results + + matrix_synapse_workers_list_results_media_repository_workers.results }} diff --git a/roles/matrix-synapse/tasks/synapse/workers/util/inject_worker.yml b/roles/matrix-synapse/tasks/synapse/workers/util/inject_worker.yml index 4f6b43986..0a52db327 100644 --- a/roles/matrix-synapse/tasks/synapse/workers/util/inject_worker.yml +++ b/roles/matrix-synapse/tasks/synapse/workers/util/inject_worker.yml @@ -59,7 +59,7 @@ matrix_synapse_webserving_workers_systemd_services_list: "{{ matrix_synapse_webserving_workers_systemd_services_list + [matrix_synapse_worker_details.name + '.service'] }}" when: matrix_synapse_worker_details.webserving | bool -# Inject stream writers and various other background workers into the instance map. +# Inject stream writers into the instance map. - ansible.builtin.set_fact: matrix_synapse_instance_map: "{{ matrix_synapse_instance_map | combine({matrix_synapse_worker_details.name: {'host': matrix_synapse_worker_details.name, 'port': matrix_synapse_worker_details.replication_port}}) }}" when: matrix_synapse_worker_details.type in matrix_synapse_known_instance_map_eligible_worker_types diff --git a/roles/matrix-synapse/tasks/validate_config.yml b/roles/matrix-synapse/tasks/validate_config.yml index faab7daa1..f6b1fe688 100644 --- a/roles/matrix-synapse/tasks/validate_config.yml +++ b/roles/matrix-synapse/tasks/validate_config.yml @@ -12,24 +12,14 @@ - "matrix_synapse_database_password" - "matrix_synapse_database_database" -- name: Fail if asking to configure deprecated workers (appservice, userdir) - ansible.builtin.fail: - msg: >- - `{{ item }}` cannot be more than 0. - This type of worker has been deprecated since Synapse v1.59. - Please remove your `{{ item }}` configuration to solve this problem. - See: https://github.com/matrix-org/synapse/blob/v1.59.0/docs/upgrade.md#deprecation-of-the-synapseappappservice-and-synapseappuser_dir-worker-application-types - when: "vars[item]|int != 0" - with_items: - - "matrix_synapse_workers_appservice_workers_count" - - "matrix_synapse_workers_user_dir_workers_count" - - name: Fail if asking for more than 1 instance of single-instance workers ansible.builtin.fail: msg: >- `{{ item }}` cannot be more than 1. This is a single-instance worker. when: "vars[item]|int > 1" with_items: + - "matrix_synapse_workers_appservice_workers_count" + - "matrix_synapse_workers_user_dir_workers_count" - "matrix_synapse_workers_stream_writer_typing_stream_workers_count" - "matrix_synapse_workers_stream_writer_to_device_stream_workers_count" - "matrix_synapse_workers_stream_writer_account_data_stream_workers_count" diff --git a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 index a635559f2..ef8684abd 100644 --- a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 +++ b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 @@ -2874,6 +2874,14 @@ instance_map: {{ matrix_synapse_instance_map | to_json }} # typing: worker1 stream_writers: {{ matrix_synapse_stream_writers | to_json }} +{% if matrix_synapse_notify_appservices_from_worker != '' %} +notify_appservices_from_worker: {{ matrix_synapse_notify_appservices_from_worker | to_json }} +{% endif %} + +{% if matrix_synapse_update_user_directory_from_worker != '' %} +update_user_directory_from_worker: {{ matrix_synapse_update_user_directory_from_worker | to_json }} +{% endif %} + # The worker that is used to run background tasks (e.g. cleaning up expired # data). If not provided this defaults to the main process. # diff --git a/roles/matrix-synapse/vars/main.yml b/roles/matrix-synapse/vars/main.yml index e8b0e49c6..2dc00feaf 100644 --- a/roles/matrix-synapse/vars/main.yml +++ b/roles/matrix-synapse/vars/main.yml @@ -64,6 +64,11 @@ matrix_synapse_workers_stream_writer_receipts_stream_worker_client_server_endpoi matrix_synapse_workers_stream_writer_presence_stream_worker_client_server_endpoints: - ^/_matrix/client/(api/v1|r0|v3|unstable)/presence/ +# matrix_synapse_workers_user_dir_worker_client_server_endpoints contains the endpoints serviced by the `type = user_dir` (`app = generic_worker`) worker. +# See: https://matrix-org.github.io/synapse/latest/workers.html#updating-the-user-directory +matrix_synapse_workers_user_dir_worker_client_server_endpoints: + - ^/_matrix/client/(r0|v3|unstable)/user_directory/search$ + # matrix_synapse_workers_known_stream_writer_stream_types contains the list of stream writer stream types that the playbook recognizes. # This is used for validation purposes. If adding support for a new type, besides adding it to this list, # don't forget to actually configure it where appropriate (see worker.yaml.j2`, the nginx proxy configuration, etc). @@ -79,13 +84,25 @@ matrix_synapse_workers_webserving_stream_writer_types: ['typing', 'to_device', ' matrix_synapse_webserving_workers_systemd_services_list: [] # matrix_synapse_known_worker_types contains the list of known worker types. +# # A worker type is different than a worker app (e.g. `generic_worker`). # For example, the `stream_writer` worker type is served by the `generic_worker` app, but is a separate type that we recognize. +# +# Some other types (`appservice` and `user_dir`) used to be Synapse worker apps, which got subsequently deprecated. +# We still allow these types of workers and map them to the `generic_worker` app, +# which is why we make sure they're part of the list below. +# We use the `unique` filter because they're part of `matrix_synapse_workers_avail_list` too (for now; scheduled for removal). matrix_synapse_known_worker_types: | {{ - matrix_synapse_workers_avail_list - + - ['stream_writer'] + ( + matrix_synapse_workers_avail_list + + + ['stream_writer'] + + + ['appservice'] + + + ['user_dir'] + ) | unique }} # matrix_synapse_known_instance_map_eligible_worker_types contains the list of worker types that are to be injected into `matrix_synapse_instance_map`. diff --git a/roles/matrix-synapse/vars/workers.yml b/roles/matrix-synapse/vars/workers.yml index 3f34bcb2d..bc49e8354 100644 --- a/roles/matrix-synapse/vars/workers.yml +++ b/roles/matrix-synapse/vars/workers.yml @@ -90,7 +90,9 @@ matrix_synapse_workers_generic_worker_endpoints: # - ^/_matrix/client/(api/v1|r0|v3|unstable)/presence/ # User directory search requests - - ^/_matrix/client/(r0|v3|unstable)/user_directory/search$ + # Any worker can handle these, but we have a dedicated user_dir worker for this, + # so we'd like for other generic workers to not try and capture these requests. + # - ^/_matrix/client/(r0|v3|unstable)/user_directory/search$ # Additionally, the following REST endpoints can be handled for GET requests: