我对 Docker 和 Prefect 比较陌生，我正在尝试在 docker 容器中启动 Prefect Server。这是我的 Dockerfile ...
FROM docker:dind
WORKDIR /app
COPY . .
RUN apk update && \
apk add python3-dev libffi-dev openssl-dev gcc libc-dev make cargo && \
python3 -m ensurepip --upgrade && \
pip3 install docker-compose prefect && \
prefect backend server
CMD [ "sh", "script.sh" ]
这是script.sh ...
dockerd &
prefect server start
经过长时间的构建后，docker 在我运行时似乎开始正常docker run --privileged=true --name prefect-server-container prefect-server-image，但随后出现套接字超时错误......完整的堆栈跟踪
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 169, in _new_conn
conn = connection.create_connection(
File "/usr/lib/python3.9/site-packages/urllib3/util/connection.py", line 96, in create_connection
raise err
File "/usr/lib/python3.9/site-packages/urllib3/util/connection.py", line 86, in create_connection
sock.connect(sa)
socket.timeout: timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 699, in urlopen
httplib_response = self._make_request(
File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 394, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 234, in request
super(HTTPConnection, self).request(method, url, body=body, headers=headers)
File "/usr/lib/python3.9/http/client.py", line 1253, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib/python3.9/http/client.py", line 1299, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib/python3.9/http/client.py", line 1248, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib/python3.9/http/client.py", line 1008, in _send_output
self.send(msg)
File "/usr/lib/python3.9/http/client.py", line 948, in send
self.connect()
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 200, in connect
conn = self._new_conn()
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 174, in _new_conn
raise ConnectTimeoutError(
urllib3.exceptions.ConnectTimeoutError: (<urllib3.connection.HTTPConnection object at 0x7ffa348e36a0>, 'Connection to docker timed out. (connect timeout=60)')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/requests/adapters.py", line 439, in send
resp = conn.urlopen(
File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 755, in urlopen
retries = retries.increment(
File "/usr/lib/python3.9/site-packages/urllib3/util/retry.py", line 574, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='docker', port=2375): Max retries exceeded with url: /version (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7ffa348e36a0>, 'Connection to docker timed out. (connect timeout=60)'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 214, in _retrieve_server_version
return self.version(api_version=False)["ApiVersion"]
File "/usr/lib/python3.9/site-packages/docker/api/daemon.py", line 181, in version
return self._result(self._get(url), json=True)
File "/usr/lib/python3.9/site-packages/docker/utils/decorators.py", line 46, in inner
return f(self, *args, **kwargs)
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 237, in _get
return self.get(url, **self._set_request_timeout(kwargs))
File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 555, in get
return self.request('GET', url, **kwargs)
File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 542, in request
resp = self.send(prep, **send_kwargs)
File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 655, in send
r = adapter.send(request, **kwargs)
File "/usr/lib/python3.9/site-packages/requests/adapters.py", line 504, in send
raise ConnectTimeout(e, request=request)
requests.exceptions.ConnectTimeout: HTTPConnectionPool(host='docker', port=2375): Max retries exceeded with url: /version (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7ffa348e36a0>, 'Connection to docker timed out. (connect timeout=60)'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/docker-compose", line 8, in <module>
sys.exit(main())
File "/usr/lib/python3.9/site-packages/compose/cli/main.py", line 81, in main
command_func()
File "/usr/lib/python3.9/site-packages/compose/cli/main.py", line 200, in perform_command
project = project_from_options('.', options)
File "/usr/lib/python3.9/site-packages/compose/cli/command.py", line 60, in project_from_options
return get_project(
File "/usr/lib/python3.9/site-packages/compose/cli/command.py", line 152, in get_project
client = get_client(
File "/usr/lib/python3.9/site-packages/compose/cli/docker_client.py", line 41, in get_client
client = docker_client(
File "/usr/lib/python3.9/site-packages/compose/cli/docker_client.py", line 170, in docker_client
client = APIClient(use_ssh_client=not use_paramiko_ssh, **kwargs)
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 197, in __init__
self._version = self._retrieve_server_version()
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 221, in _retrieve_server_version
raise DockerException(
docker.errors.DockerException: Error while fetching server API version: HTTPConnectionPool(host='docker', port=2375): Max retries exceeded with url: /version (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7ffa348e36a0>, 'Connection to docker timed out. (connect timeout=60)'))
Exception caught; killing services (press ctrl-C to force)
^CTraceback (most recent call last):
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 169, in _new_conn
conn = connection.create_connection(
File "/usr/lib/python3.9/site-packages/urllib3/util/connection.py", line 96, in create_connection
raise err
File "/usr/lib/python3.9/site-packages/urllib3/util/connection.py", line 86, in create_connection
sock.connect(sa)
socket.timeout: timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 699, in urlopen
httplib_response = self._make_request(
File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 394, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 234, in request
super(HTTPConnection, self).request(method, url, body=body, headers=headers)
File "/usr/lib/python3.9/http/client.py", line 1253, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib/python3.9/http/client.py", line 1299, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib/python3.9/http/client.py", line 1248, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib/python3.9/http/client.py", line 1008, in _send_output
self.send(msg)
File "/usr/lib/python3.9/http/client.py", line 948, in send
self.connect()
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 200, in connect
conn = self._new_conn()
File "/usr/lib/python3.9/site-packages/urllib3/connection.py", line 174, in _new_conn
raise ConnectTimeoutError(
urllib3.exceptions.ConnectTimeoutError: (<urllib3.connection.HTTPConnection object at 0x7f87fae1c2b0>, 'Connection to docker timed out. (connect timeout=60)')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/requests/adapters.py", line 439, in send
resp = conn.urlopen(
File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 755, in urlopen
retries = retries.increment(
File "/usr/lib/python3.9/site-packages/urllib3/util/retry.py", line 574, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='docker', port=2375): Max retries exceeded with url: /version (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7f87fae1c2b0>, 'Connection to docker timed out. (connect timeout=60)'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 214, in _retrieve_server_version
return self.version(api_version=False)["ApiVersion"]
File "/usr/lib/python3.9/site-packages/docker/api/daemon.py", line 181, in version
return self._result(self._get(url), json=True)
File "/usr/lib/python3.9/site-packages/docker/utils/decorators.py", line 46, in inner
return f(self, *args, **kwargs)
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 237, in _get
return self.get(url, **self._set_request_timeout(kwargs))
File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 555, in get
return self.request('GET', url, **kwargs)
File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 542, in request
resp = self.send(prep, **send_kwargs)
File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 655, in send
r = adapter.send(request, **kwargs)
File "/usr/lib/python3.9/site-packages/requests/adapters.py", line 504, in send
raise ConnectTimeout(e, request=request)
requests.exceptions.ConnectTimeout: HTTPConnectionPool(host='docker', port=2375): Max retries exceeded with url: /version (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7f87fae1c2b0>, 'Connection to docker timed out. (connect timeout=60)'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/docker-compose", line 8, in <module>
sys.exit(main())
File "/usr/lib/python3.9/site-packages/compose/cli/main.py", line 81, in main
command_func()
File "/usr/lib/python3.9/site-packages/compose/cli/main.py", line 200, in perform_command
project = project_from_options('.', options)
File "/usr/lib/python3.9/site-packages/compose/cli/command.py", line 60, in project_from_options
return get_project(
File "/usr/lib/python3.9/site-packages/compose/cli/command.py", line 152, in get_project
client = get_client(
File "/usr/lib/python3.9/site-packages/compose/cli/docker_client.py", line 41, in get_client
client = docker_client(
File "/usr/lib/python3.9/site-packages/compose/cli/docker_client.py", line 170, in docker_client
client = APIClient(use_ssh_client=not use_paramiko_ssh, **kwargs)
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 197, in __init__
self._version = self._retrieve_server_version()
File "/usr/lib/python3.9/site-packages/docker/api/client.py", line 221, in _retrieve_server_version
raise DockerException(
docker.errors.DockerException: Error while fetching server API version: HTTPConnectionPool(host='docker', port=2375): Max retries exceeded with url: /version (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7f87fae1c2b0>, 'Connection to docker timed out. (connect timeout=60)'))
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/prefect/cli/server.py", line 621, in start
subprocess.check_call(
File "/usr/lib/python3.9/subprocess.py", line 373, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['docker-compose', 'pull']' returned non-zero exit status 1.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/prefect", line 8, in <module>
sys.exit(cli())
File "/usr/lib/python3.9/site-packages/click/core.py", line 829, in __call__
return self.main(*args, **kwargs)
File "/usr/lib/python3.9/site-packages/click/core.py", line 782, in main
rv = self.invoke(ctx)
File "/usr/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/lib/python3.9/site-packages/click/core.py", line 610, in invoke
return callback(*args, **kwargs)
File "/usr/lib/python3.9/site-packages/prefect/cli/server.py", line 662, in start
subprocess.check_output(
File "/usr/lib/python3.9/subprocess.py", line 424, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/usr/lib/python3.9/subprocess.py", line 528, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['docker-compose', 'down']' returned non-zero exit status 1.
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