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Kill off deprecated "config-on-the-fly" docker mode (#6918)

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Lots of people seem to get confused by this mode, and it's been deprecated
since Synapse 1.1.0. It's time for it to go.
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Richard van der Hoff 2020-02-18 11:41:53 +00:00 committed by GitHub
parent bc831d1d9a
commit 3be2abd0a9
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3 changed files with 34 additions and 41 deletions
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1
changelog.d/6918.docker Normal file
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@ -0,0 +1 @@
The deprecated "generate-config-on-the-fly" mode is no longer supported.

23
docker/README.md
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@ -110,12 +110,12 @@ 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).
The docker image used to support creating a dynamic configuration file based
on environment variables. This is no longer supported, and an error will be
raised if you try to run synapse without a config file.
To migrate from a dynamic configuration file to a static one, run the docker
It is, however, possible to generate a static configuration file based on
the environment variables that were previously used. To do this, run the docker
container once with the environment variables set, and `migrate_config`
command line option. For example:
@ -127,15 +127,20 @@ docker run -it --rm \
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).
This will generate the same configuration file as the legacy mode used, and
will store it in `/data/homeserver.yaml`. You can then use it as shown above at
[Running synapse](#running-synapse).
Note that the defaults used in this configuration file may be different to
those when generating a new config file with `generate`: for example, TLS is
enabled by default in this mode. You are encouraged to inspect the generated
configuration file and edit it to ensure it meets your needs.
## Building the image
If you need to build the image from a Synapse checkout, use the following `docker
build` command from the repo's root:
```
docker build -t matrixdotorg/synapse -f docker/Dockerfile .
```

51
docker/start.py
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@ -188,11 +188,6 @@ def main(args, environ):
else:
ownership = "{}:{}".format(desired_uid, desired_gid)
log(
"Container running as UserID %s:%s, ENV (or defaults) requests %s:%s"
% (os.getuid(), os.getgid(), desired_uid, desired_gid)
)
if ownership is None:
log("Will not perform chmod/su-exec as UserID already matches request")
@ -213,38 +208,30 @@ def main(args, environ):
if mode is not None:
error("Unknown execution mode '%s'" % (mode,))
if "SYNAPSE_SERVER_NAME" in environ:
# backwards-compatibility generate-a-config-on-the-fly mode
if "SYNAPSE_CONFIG_PATH" in environ:
error(
"SYNAPSE_SERVER_NAME can only be combined with SYNAPSE_CONFIG_PATH "
"in `generate` or `migrate_config` mode. To start synapse using a "
"config file, unset the SYNAPSE_SERVER_NAME environment variable."
)
config_dir = environ.get("SYNAPSE_CONFIG_DIR", "/data")
config_path = environ.get("SYNAPSE_CONFIG_PATH", config_dir + "/homeserver.yaml")
config_path = "/compiled/homeserver.yaml"
log(
"Generating config file '%s' on-the-fly from environment variables.\n"
"Note that this mode is deprecated. You can migrate to a static config\n"
"file by running with 'migrate_config'. See the README for more details."
% (config_path,)
)
generate_config_from_template("/compiled", config_path, environ, ownership)
else:
config_dir = environ.get("SYNAPSE_CONFIG_DIR", "/data")
config_path = environ.get(
"SYNAPSE_CONFIG_PATH", config_dir + "/homeserver.yaml"
)
if not os.path.exists(config_path):
if not os.path.exists(config_path):
if "SYNAPSE_SERVER_NAME" in environ:
error(
"Config file '%s' does not exist. You should either create a new "
"config file by running with the `generate` argument (and then edit "
"the resulting file before restarting) or specify the path to an "
"existing config file with the SYNAPSE_CONFIG_PATH variable."
"""\
Config file '%s' does not exist.
The synapse docker image no longer supports generating a config file on-the-fly
based on environment variables. You can migrate to a static config file by
running with 'migrate_config'. See the README for more details.
"""
% (config_path,)
)
error(
"Config file '%s' does not exist. You should either create a new "
"config file by running with the `generate` argument (and then edit "
"the resulting file before restarting) or specify the path to an "
"existing config file with the SYNAPSE_CONFIG_PATH variable."
% (config_path,)
)
log("Starting synapse with config file " + config_path)
args = ["python", "-m", synapse_worker, "--config-path", config_path]