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145 lines
5.4 KiB
Markdown
145 lines
5.4 KiB
Markdown
# Synapse Docker
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This Docker image will run Synapse as a single process. By default it uses a
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sqlite database; for production use you should connect it to a separate
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postgres database.
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The image also does *not* provide a TURN server.
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## Volumes
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By default, the image expects a single volume, located at ``/data``, that will hold:
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* configuration files;
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* temporary files during uploads;
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* uploaded media and thumbnails;
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* the SQLite database if you do not configure postgres;
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* the appservices configuration.
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You are free to use separate volumes depending on storage endpoints at your
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disposal. For instance, ``/data/media`` could be stored on a large but low
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performance hdd storage while other files could be stored on high performance
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endpoints.
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In order to setup an application service, simply create an ``appservices``
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directory in the data volume and write the application service Yaml
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configuration file there. Multiple application services are supported.
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## Generating a configuration file
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The first step is to generate a valid config file. To do this, you can run the
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image with the `generate` command line option.
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You will need to specify values for the `SYNAPSE_SERVER_NAME` and
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`SYNAPSE_REPORT_STATS` environment variable, and mount a docker volume to store
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the configuration on. For example:
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```
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docker run -it --rm \
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--mount type=volume,src=synapse-data,dst=/data \
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-e SYNAPSE_SERVER_NAME=my.matrix.host \
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-e SYNAPSE_REPORT_STATS=yes \
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matrixdotorg/synapse:latest generate
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```
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For information on picking a suitable server name, see
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https://github.com/matrix-org/synapse/blob/master/INSTALL.md.
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The above command will generate a `homeserver.yaml` in (typically)
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`/var/lib/docker/volumes/synapse-data/_data`. You should check this file, and
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customise it to your needs.
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The following environment variables are supported in `generate` mode:
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* `SYNAPSE_SERVER_NAME` (mandatory): the server public hostname.
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* `SYNAPSE_REPORT_STATS` (mandatory, `yes` or `no`): whether to enable
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anonymous statistics reporting.
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* `SYNAPSE_CONFIG_DIR`: where additional config files (such as the log config
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and event signing key) will be stored. Defaults to `/data`.
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* `SYNAPSE_CONFIG_PATH`: path to the file to be generated. Defaults to
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`<SYNAPSE_CONFIG_DIR>/homeserver.yaml`.
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* `SYNAPSE_DATA_DIR`: where the generated config will put persistent data
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such as the database and media store. Defaults to `/data`.
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* `UID`, `GID`: the user id and group id to use for creating the data
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directories. Defaults to `991`, `991`.
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## Running synapse
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Once you have a valid configuration file, you can start synapse as follows:
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```
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docker run -d --name synapse \
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--mount type=volume,src=synapse-data,dst=/data \
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-p 8008:8008 \
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matrixdotorg/synapse:latest
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```
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You can then check that it has started correctly with:
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```
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docker logs synapse
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```
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If all is well, you should now be able to connect to http://localhost:8008 and
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see a confirmation message.
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The following environment variables are supported in run mode:
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* `SYNAPSE_CONFIG_DIR`: where additional config files are stored. Defaults to
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`/data`.
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* `SYNAPSE_CONFIG_PATH`: path to the config file. Defaults to
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`<SYNAPSE_CONFIG_DIR>/homeserver.yaml`.
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* `SYNAPSE_WORKER`: module to execute, used when running synapse with workers.
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Defaults to `synapse.app.homeserver`, which is suitable for non-worker mode.
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* `UID`, `GID`: the user and group id to run Synapse as. Defaults to `991`, `991`.
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* `TZ`: the [timezone](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones) the container will run with. Defaults to `UTC`.
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## TLS support
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The default configuration exposes a single HTTP port: http://localhost:8008. It
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is suitable for local testing, but for any practical use, you will either need
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to use a reverse proxy, or configure Synapse to expose an HTTPS port.
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For documentation on using a reverse proxy, see
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https://github.com/matrix-org/synapse/blob/master/docs/reverse_proxy.md.
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For more information on enabling TLS support in synapse itself, see
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https://github.com/matrix-org/synapse/blob/master/INSTALL.md#tls-certificates. Of
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course, you will need to expose the TLS port from the container with a `-p`
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argument to `docker run`.
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## Legacy dynamic configuration file support
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For backwards-compatibility only, the docker image supports creating a dynamic
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configuration file based on environment variables. This is now deprecated, but
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is enabled when the `SYNAPSE_SERVER_NAME` variable is set (and `generate` is
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not given).
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To migrate from a dynamic configuration file to a static one, run the docker
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container once with the environment variables set, and `migrate_config`
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command line option. For example:
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```
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docker run -it --rm \
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--mount type=volume,src=synapse-data,dst=/data \
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-e SYNAPSE_SERVER_NAME=my.matrix.host \
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-e SYNAPSE_REPORT_STATS=yes \
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matrixdotorg/synapse:latest migrate_config
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```
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This will generate the same configuration file as the legacy mode used, but
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will store it in `/data/homeserver.yaml` instead of a temporary location. You
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can then use it as shown above at [Running synapse](#running-synapse).
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## Building the image
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If you need to build the image from a Synapse checkout, use the following `docker
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build` command from the repo's root:
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```
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docker build -t matrixdotorg/synapse -f docker/Dockerfile .
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```
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You can choose to build a different docker image by changing the value of the `-f` flag to
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point to another Dockerfile.
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