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synapse/docker/README.md
Amir Zarrinkafsh de8077a164 Add ability to set timezone for Docker container (#5383)
Signed-off-by: Amir Zarrinkafsh <nightah@me.com>
2019-07-02 10:31:06 +01:00

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