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Enable ACME support in the docker image (#4566)

Browse source 
Also:

* Fix wrapping in docker readme
* Clean up some docs on the docker image
* a workaround for #4554
This commit is contained in:
Richard van der Hoff 2019-02-05 13:42:21 +00:00 committed by GitHub
parent 3ef71a6ea0
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6 changed files with 116 additions and 41 deletions
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1
changelog.d/4566.feature Normal file
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@ -0,0 +1 @@
enable ACME support in the docker image

15
docker/Dockerfile
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@ -1,3 +1,16 @@
# Dockerfile to build the matrixdotorg/synapse docker images.
#
# To build the image, run `docker build` command from the root of the
# synapse repository:
#
# docker build -f docker/Dockerfile .
#
# There is an optional PYTHON_VERSION build argument which sets the
# version of python to build against: for example:
#
# docker build -f docker/Dockerfile --build-arg PYTHON_VERSION=3.6 .
#
ARG PYTHON_VERSION=2
###
@ -59,6 +72,6 @@ COPY ./docker/conf /conf
VOLUME ["/data"]
EXPOSE 8008/tcp 8448/tcp
EXPOSE 8008/tcp 8009/tcp 8448/tcp
ENTRYPOINT ["/start.py"]

88
docker/README.md
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@ -1,22 +1,21 @@
# Synapse Docker
This Docker image will run Synapse as a single process. It does not provide a database
server or a TURN server, you should run these separately.
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.
## Run
We do not currently offer a `latest` image, as this has somewhat undefined semantics.
We instead release only tagged versions so upgrading between releases is entirely
within your control.
### Using docker-compose (easier)
This image is designed to run either with an automatically generated configuration
file or with a custom configuration that requires manual editing.
This image is designed to run either with an automatically generated
configuration file or with a custom configuration that requires manual editing.
An easy way to make use of this image is via docker-compose. See the
[contrib/docker](../contrib/docker)
section of the synapse project for examples.
[contrib/docker](../contrib/docker) section of the synapse project for
examples.
### Without Compose (harder)
@ -32,7 +31,7 @@ docker run \
-v ${DATA_PATH}:/data \
-e SYNAPSE_SERVER_NAME=my.matrix.host \
-e SYNAPSE_REPORT_STATS=yes \
docker.io/matrixdotorg/synapse:latest
matrixdotorg/synapse:latest
```
## Volumes
@ -53,6 +52,28 @@ In order to setup an application service, simply create an ``appservices``
directory in the data volume and write the application service Yaml
configuration file there. Multiple application services are supported.
## TLS certificates
Synapse requires a valid TLS certificate. You can do one of the following:
* Provide your own certificate and key (as
`${DATA_PATH}/${SYNAPSE_SERVER_NAME}.crt` and
`${DATA_PATH}/${SYNAPSE_SERVER_NAME}.key`, or elsewhere by providing an
entire config as `${SYNAPSE_CONFIG_PATH}`).
* Use a reverse proxy to terminate incoming TLS, and forward the plain http
traffic to port 8008 in the container. In this case you should set `-e
SYNAPSE_NO_TLS=1`.
* Use the ACME (Let's Encrypt) support built into Synapse. This requires
`${SYNAPSE_SERVER_NAME}` port 80 to be forwarded to port 8009 in the
container, for example with `-p 80:8009`. To enable it in the docker
container, set `-e SYNAPSE_ACME=1`.
If you don't do any of these, Synapse will fail to start with an error similar to:
synapse.config._base.ConfigError: Error accessing file '/data/<server_name>.tls.crt' (config for tls_certificate): No such file or directory
## Environment
Unless you specify a custom path for the configuration file, a very generic
@ -71,7 +92,7 @@ then customize it manually. No other environment variable is required.
Otherwise, a dynamic configuration file will be used. The following environment
variables are available for configuration:
* ``SYNAPSE_SERVER_NAME`` (mandatory), the current server public hostname.
* ``SYNAPSE_SERVER_NAME`` (mandatory), the server public hostname.
* ``SYNAPSE_REPORT_STATS``, (mandatory, ``yes`` or ``no``), enable anonymous
statistics reporting back to the Matrix project which helps us to get funding.
* ``SYNAPSE_NO_TLS``, set this variable to disable TLS in Synapse (use this if
@ -80,7 +101,6 @@ variables are available for configuration:
the Synapse instance.
* ``SYNAPSE_ALLOW_GUEST``, set this variable to allow guest joining this server.
* ``SYNAPSE_EVENT_CACHE_SIZE``, the event cache size [default `10K`].
* ``SYNAPSE_CACHE_FACTOR``, the cache factor [default `0.5`].
* ``SYNAPSE_RECAPTCHA_PUBLIC_KEY``, set this variable to the recaptcha public
key in order to enable recaptcha upon registration.
* ``SYNAPSE_RECAPTCHA_PRIVATE_KEY``, set this variable to the recaptcha private
@ -88,7 +108,9 @@ variables are available for configuration:
* ``SYNAPSE_TURN_URIS``, set this variable to the coma-separated list of TURN
uris to enable TURN for this homeserver.
* ``SYNAPSE_TURN_SECRET``, set this to the TURN shared secret if required.
* ``SYNAPSE_MAX_UPLOAD_SIZE``, set this variable to change the max upload size [default `10M`].
* ``SYNAPSE_MAX_UPLOAD_SIZE``, set this variable to change the max upload size
[default `10M`].
* ``SYNAPSE_ACME``: set this to enable the ACME certificate renewal support.
Shared secrets, that will be initialized to random values if not set:
@ -99,27 +121,25 @@ Shared secrets, that will be initialized to random values if not set:
Database specific values (will use SQLite if not set):
* `POSTGRES_DB` - The database name for the synapse postgres database. [default: `synapse`]
* `POSTGRES_HOST` - The host of the postgres database if you wish to use postgresql instead of sqlite3. [default: `db` which is useful when using a container on the same docker network in a compose file where the postgres service is called `db`]
* `POSTGRES_PASSWORD` - The password for the synapse postgres database. **If this is set then postgres will be used instead of sqlite3.** [default: none] **NOTE**: You are highly encouraged to use postgresql! Please use the compose file to make it easier to deploy.
* `POSTGRES_USER` - The user for the synapse postgres database. [default: `matrix`]
* `POSTGRES_DB` - The database name for the synapse postgres
database. [default: `synapse`]
* `POSTGRES_HOST` - The host of the postgres database if you wish to use
postgresql instead of sqlite3. [default: `db` which is useful when using a
container on the same docker network in a compose file where the postgres
service is called `db`]
* `POSTGRES_PASSWORD` - The password for the synapse postgres database. **If
this is set then postgres will be used instead of sqlite3.** [default: none]
**NOTE**: You are highly encouraged to use postgresql! Please use the compose
file to make it easier to deploy.
* `POSTGRES_USER` - The user for the synapse postgres database. [default:
`matrix`]
Mail server specific values (will not send emails if not set):
* ``SYNAPSE_SMTP_HOST``, hostname to the mail server.
* ``SYNAPSE_SMTP_PORT``, TCP port for accessing the mail server [default ``25``].
* ``SYNAPSE_SMTP_USER``, username for authenticating against the mail server if any.
* ``SYNAPSE_SMTP_PASSWORD``, password for authenticating against the mail server if any.
## Build
Build the docker image with the `docker build` command from the root of the synapse repository.
```
docker build -t docker.io/matrixdotorg/synapse . -f docker/Dockerfile
```
The `-t` option sets the image tag. Official images are tagged `matrixdotorg/synapse:<version>` where `<version>` is the same as the release tag in the synapse git repository.
You may have a local Python wheel cache available, in which case copy the relevant
packages in the ``cache/`` directory at the root of the project.
* ``SYNAPSE_SMTP_PORT``, TCP port for accessing the mail server [default
``25``].
* ``SYNAPSE_SMTP_USER``, username for authenticating against the mail server if
any.
* ``SYNAPSE_SMTP_PASSWORD``, password for authenticating against the mail
server if any.

17
docker/conf/dummy.tls.crt Normal file
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@ -0,0 +1,17 @@
-----BEGIN CERTIFICATE-----
MIICnTCCAYUCAgPoMA0GCSqGSIb3DQEBCwUAMBQxEjAQBgNVBAMMCWxvY2FsaG9z
dDAeFw0xOTAxMTUwMDQxNTBaFw0yOTAxMTIwMDQxNTBaMBQxEjAQBgNVBAMMCWxv
Y2FsaG9zdDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMKqm81/8j5d
R1s7VZ8ueg12gJrPVCCAOkp0UnuC/ZlXhN0HTvnhQ+B0IlSgB4CcQZyf4jnA6o4M
rwSc7VX0MPE9x/idoA0g/0WoC6tsxugOrvbzCw8Tv+fnXglm6uVc7aFPfx69wU3q
lUHGD/8jtEoHxmCG177Pt2lHAfiVLBAyMQGtETzxt/yAfkloaybe316qoljgK5WK
cokdAt9G84EEqxNeEnx5FG3Vc100bAqJS4GvQlFgtF9KFEqZKEyB1yKBpPMDfPIS
V9hIV0gswSmYI8dpyBlGf5lPElY68ZGABmOQgr0RI5qHK/h28OpFPE0q3v4AMHgZ
I36wii4NrAUCAwEAATANBgkqhkiG9w0BAQsFAAOCAQEAfD8kcpZ+dn08xh1qtKtp
X+/YNZaOBIeVdlCzfoZKNblSFAFD/jCfObNJYvZMUQ8NX2UtEJp1lTA6m7ltSsdY
gpC2k1VD8iN+ooXklJmL0kxc7UUqho8I0l9vn35h+lhLF0ihT6XfZVi/lDHWl+4G
rG+v9oxvCSCWrNWLearSlFPtQQ8xPtOE0nLwfXtOI/H/2kOuC38ihaIWM4jjbWXK
E/ksgUfuDv0mFiwf1YdBF5/M3/qOowqzU8HgMJ3WoT/9Po5Ya1pWc+3BcxxytUDf
XdMu0tWHKX84tZxLcR1nZHzluyvFFM8xNtLi9xV0Z7WbfT76V0C/ulEOybGInYsv
nQ==
-----END CERTIFICATE-----

18
docker/conf/homeserver.yaml
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@ -2,10 +2,24 @@
## TLS ##
{% if SYNAPSE_NO_TLS %}
no_tls: True
# workaround for https://github.com/matrix-org/synapse/issues/4554
tls_certificate_path: "/conf/dummy.tls.crt"
{% else %}
tls_certificate_path: "/data/{{ SYNAPSE_SERVER_NAME }}.tls.crt"
tls_private_key_path: "/data/{{ SYNAPSE_SERVER_NAME }}.tls.key"
no_tls: {{ "True" if SYNAPSE_NO_TLS else "False" }}
tls_fingerprints: []
{% if SYNAPSE_ACME %}
acme:
enabled: true
port: 8009
{% endif %}
{% endif %}
## Server ##

18
docker/start.py
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@ -47,9 +47,8 @@ if mode == "generate":
# In normal mode, generate missing keys if any, then run synapse
else:
# Parse the configuration file
if "SYNAPSE_CONFIG_PATH" in environ:
args += ["--config-path", environ["SYNAPSE_CONFIG_PATH"]]
config_path = environ["SYNAPSE_CONFIG_PATH"]
else:
check_arguments(environ, ("SYNAPSE_SERVER_NAME", "SYNAPSE_REPORT_STATS"))
generate_secrets(environ, {
@ -58,10 +57,21 @@ else:
})
environ["SYNAPSE_APPSERVICES"] = glob.glob("/data/appservices/*.yaml")
if not os.path.exists("/compiled"): os.mkdir("/compiled")
convert("/conf/homeserver.yaml", "/compiled/homeserver.yaml", environ)
config_path = "/compiled/homeserver.yaml"
convert("/conf/homeserver.yaml", config_path, environ)
convert("/conf/log.config", "/compiled/log.config", environ)
subprocess.check_output(["chown", "-R", ownership, "/data"])
args += ["--config-path", "/compiled/homeserver.yaml"]
args += [
"--config-path", config_path,
# tell synapse to put any generated keys in /data rather than /compiled
"--keys-directory", "/data",
]
# Generate missing keys and start synapse
subprocess.check_output(args + ["--generate-keys"])
os.execv("/sbin/su-exec", ["su-exec", ownership] + args)