PermissionError: [Errno 13] Permission denied: '/homeserver.log'

[nathmo]

Hey, first, thank you for this tutorial. I've been looking for something similar for quite a while and never had the courage to tame the beast by myself.

I'm using portainer. I created manually the folders as required and copy pasted the .env and dockerfile in portainer. + the config file in the required folder. (i did not create the folder for webhooks as I had no use for that bridge yet.)

also I did not run "sudo docker run -it --rm
-v=${CONF_PATH}/homeserver:/data
-e SYNAPSE_SERVER_NAME=matrix.${DOMAIN}
-e SYNAPSE_REPORT_STATS=yes
matrixdotorg/synapse:latest generate
" before bringing the whole stack up as i'm not super confortable with docker CLI and dont want to create container that I can't manage from portainer

the stack start but "homerserver"/synapse stay stuck in a boot loop due to some permission issue...

Here is the full log :

Starting synapse with args -m synapse.app.homeserver --config-path /data/homeserver.yaml

This server is configured to use 'matrix.org' as its trusted key server via the

'trusted_key_servers' config option. 'matrix.org' is a good choice for a key

server since it is long-lived, stable and trusted. However, some admins may

wish to use another server for this purpose.

To suppress this warning and continue using 'matrix.org', admins should set

'suppress_key_server_warning' to 'true' in homeserver.yaml.

--------------------------------------------------------------------------------

Traceback (most recent call last):

  File "/usr/local/lib/python3.11/logging/config.py", line 573, in configure

    handler = self.configure_handler(handlers[name])

              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/usr/local/lib/python3.11/logging/config.py", line 757, in configure_handler

    result = factory(**kwargs)

             ^^^^^^^^^^^^^^^^^

  File "/usr/local/lib/python3.11/logging/handlers.py", line 214, in __init__

    BaseRotatingHandler.__init__(self, filename, 'a', encoding=encoding,

  File "/usr/local/lib/python3.11/logging/handlers.py", line 58, in __init__

    logging.FileHandler.__init__(self, filename, mode=mode,

  File "/usr/local/lib/python3.11/logging/__init__.py", line 1181, in __init__

    StreamHandler.__init__(self, self._open())

                                 ^^^^^^^^^^^^

  File "/usr/local/lib/python3.11/logging/__init__.py", line 1213, in _open

    return open_func(self.baseFilename, self.mode,

           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

PermissionError: [Errno 13] Permission denied: '/homeserver.log'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):

  File "<frozen runpy>", line 198, in _run_module_as_main

  File "<frozen runpy>", line 88, in _run_code

  File "/usr/local/lib/python3.11/site-packages/synapse/app/homeserver.py", line 419, in <module>

    main()

  File "/usr/local/lib/python3.11/site-packages/synapse/app/homeserver.py", line 409, in main

    hs = setup(sys.argv[1:])

         ^^^^^^^^^^^^^^^^^^^

  File "/usr/local/lib/python3.11/site-packages/synapse/app/homeserver.py", line 368, in setup

    synapse.config.logger.setup_logging(hs, config, use_worker_options=False)

  File "/usr/local/lib/python3.11/site-packages/synapse/config/logger.py", line 348, in setup_logging

    _setup_stdlib_logging(config, log_config_path, logBeginner=logBeginner)

  File "/usr/local/lib/python3.11/site-packages/synapse/config/logger.py", line 246, in _setup_stdlib_logging

    _load_logging_config(log_config_path)

  File "/usr/local/lib/python3.11/site-packages/synapse/config/logger.py", line 303, in _load_logging_config

    logging.config.dictConfig(log_config)

  File "/usr/local/lib/python3.11/logging/config.py", line 823, in dictConfig

    dictConfigClass(config).configure()

  File "/usr/local/lib/python3.11/logging/config.py", line 580, in configure

    raise ValueError('Unable to configure handler '

ValueError: Unable to configure handler 'file'

and the folder structure

/pool/container/matrix-stack$ ls -al
total 87
drwxrwxrwx 13 user user 13 Sep  5 18:49 .
drwxr-xr-x 34 user user 34 Sep  5 17:27 ..
drwx------ 19 lxd  user 26 Sep  5 19:49 db
drwxrwxrwx  3 user user  4 Sep  5 19:50 facebook-bridge
drwxrwxrwx  2 user user  5 Sep  5 19:50 homeserver
drwxrwxrwx  2 root root  2 Sep  5 18:49 homeserver-media_store
drwxrwxrwx  2 user user  2 Sep  5 17:28 homeserver_media-store
drwxrwxrwx  5 1337 1337  9 Sep  5 19:49 maubot
drwxrwxrwx  2 user user  3 Sep  5 18:21 proxy
drwxrwxrwx  3 user user  4 Sep  5 19:50 telegram-bridge
drwxrwxrwx  2 user user  2 Sep  5 17:28 turn
drwxrwxrwx  2 user user  2 Sep  5 17:27 webchat
drwxrwxrwx  3 root root  3 Sep  5 18:49 webhooks

(excuse the permission, I was loosing patience and chmod 777)

Would you happen to have an idea of why it's unable to create the logfile ? Especially since the crash dump seems to suggest that it's trying to create it at the root of the container, which is not mapped to the host file system if I understand correctly, so it should not have any permission problem.