问题
I am trying to get DockerOperator work with Airflow on my Mac. I am running Airflow based on Puckel with small modifications.
Dockerfile build as puckel-airflow-with-docker-inside:
FROM puckel/docker-airflow:latest
USER root
RUN groupadd --gid 999 docker \
&& usermod -aG docker airflow
USER airflow
docker-compose-CeleryExecutor.yml.:
version: '2.1'
services:
redis:
image: 'redis:5.0.5'
postgres:
image: postgres:9.6
environment:
- POSTGRES_USER=airflow
- POSTGRES_PASSWORD=airflow
- POSTGRES_DB=airflow
webserver:
image: puckel-airflow-with-docker-inside:latest
restart: always
depends_on:
- postgres
- redis
environment:
- LOAD_EX=n
- FERNET_KEY=46BKJoQYlPPOexq0OhDZnIlNepKFf87WFwLbfzqDDho=
- EXECUTOR=Celery
volumes:
- ./requirements.txt:/requirements.txt
- ./dags:/usr/local/airflow/dags
ports:
- "8080:8080"
command: webserver
healthcheck:
test: ["CMD-SHELL", "[ -f /usr/local/airflow/airflow-webserver.pid ]"]
interval: 30s
timeout: 30s
retries: 3
flower:
image: puckel-airflow-with-docker-inside:latest
restart: always
depends_on:
- redis
environment:
- EXECUTOR=Celery
ports:
- "5555:5555"
command: flower
scheduler:
image: puckel-airflow-with-docker-inside:latest
restart: always
depends_on:
- webserver
volumes:
- ./dags:/usr/local/airflow/dags
- ./requirements.txt:/requirements.txt
environment:
- LOAD_EX=n
- FERNET_KEY=46BKJoQYlPPOexq0OhDZnIlNepKFf87WFwLbfzqDDho=
- EXECUTOR=Celery
command: scheduler
worker:
image: puckel-airflow-with-docker-inside:latest
restart: always
depends_on:
- scheduler
volumes:
- ./dags:/usr/local/airflow/dags
- ./requirements.txt:/requirements.txt
environment:
- DOCKER_HOST=tcp://socat:2375
- FERNET_KEY=46BKJoQYlPPOexq0OhDZnIlNepKFf87WFwLbfzqDDho=
- EXECUTOR=Celery
command: worker
socat:
image: bpack/socat
command: TCP4-LISTEN:2375,fork,reuseaddr UNIX-CONNECT:/var/run/docker.sock
volumes:
- /var/run/docker.sock:/var/run/docker.sock
expose:
- "2375"
Task/Operation Definition in the DAG:
DockerOperator(
task_id='docker_command',
image='centos:latest',
api_version='auto',
auto_remove=True,
command="/bin/sleep 30",
docker_url="unix://var/run/docker.sock",
network_mode="bridge",
dag=dag
)
Full Error-Log for the Docker-Task after triggering the DAG:
*** Log file does not exist: /usr/local/airflow/logs/tutorial/docker_command/2020-04-13T11:20:41.323461+00:00/1.log
*** Fetching from: http://6f57f4c44662:8793/log/tutorial/docker_command/2020-04-13T11:20:41.323461+00:00/1.log
[2020-04-13 11:20:47,627] {{taskinstance.py:655}} INFO - Dependencies all met for <TaskInstance: tutorial.docker_command 2020-04-13T11:20:41.323461+00:00 [queued]>
[2020-04-13 11:20:47,648] {{taskinstance.py:655}} INFO - Dependencies all met for <TaskInstance: tutorial.docker_command 2020-04-13T11:20:41.323461+00:00 [queued]>
[2020-04-13 11:20:47,648] {{taskinstance.py:866}} INFO -
--------------------------------------------------------------------------------
[2020-04-13 11:20:47,648] {{taskinstance.py:867}} INFO - Starting attempt 1 of 2
[2020-04-13 11:20:47,648] {{taskinstance.py:868}} INFO -
--------------------------------------------------------------------------------
[2020-04-13 11:20:47,660] {{taskinstance.py:887}} INFO - Executing <Task(DockerOperator): docker_command> on 2020-04-13T11:20:41.323461+00:00
[2020-04-13 11:20:47,663] {{standard_task_runner.py:53}} INFO - Started process 53 to run task
[2020-04-13 11:20:47,729] {{logging_mixin.py:112}} INFO - Running %s on host %s <TaskInstance: tutorial.docker_command 2020-04-13T11:20:41.323461+00:00 [running]> 6f57f4c44662
[2020-04-13 11:20:47,758] {{taskinstance.py:1128}} ERROR - Error while fetching server API version: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))
Traceback (most recent call last):
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 354, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/local/lib/python3.7/http/client.py", line 1252, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1298, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1247, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1026, in _send_output
self.send(msg)
File "/usr/local/lib/python3.7/http/client.py", line 966, in send
self.connect()
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/transport/unixconn.py", line 42, in connect
sock.connect(self.unix_socket)
FileNotFoundError: [Errno 2] No such file or directory
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/airflow/.local/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 638, in urlopen
_stacktrace=sys.exc_info()[2])
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/util/retry.py", line 368, in increment
raise six.reraise(type(error), error, _stacktrace)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/packages/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 354, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/local/lib/python3.7/http/client.py", line 1252, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1298, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1247, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1026, in _send_output
self.send(msg)
File "/usr/local/lib/python3.7/http/client.py", line 966, in send
self.connect()
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/transport/unixconn.py", line 42, in connect
sock.connect(self.unix_socket)
urllib3.exceptions.ProtocolError: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/api/client.py", line 202, in _retrieve_server_version
return self.version(api_version=False)["ApiVersion"]
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/api/daemon.py", line 181, in version
return self._result(self._get(url), json=True)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/utils/decorators.py", line 46, in inner
return f(self, *args, **kwargs)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/api/client.py", line 225, in _get
return self.get(url, **self._set_request_timeout(kwargs))
File "/usr/local/airflow/.local/lib/python3.7/site-packages/requests/sessions.py", line 546, in get
return self.request('GET', url, **kwargs)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/usr/local/airflow/.local/lib/python3.7/site-packages/requests/adapters.py", line 498, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line 966, in _run_raw_task
result = task_copy.execute(context=context)
File "/usr/local/lib/python3.7/site-packages/airflow/operators/docker_operator.py", line 262, in execute
tls=tls_config
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/api/client.py", line 185, in __init__
self._version = self._retrieve_server_version()
File "/usr/local/airflow/.local/lib/python3.7/site-packages/docker/api/client.py", line 210, in _retrieve_server_version
'Error while fetching server API version: {0}'.format(e)
docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))
[2020-04-13 11:20:47,765] {{taskinstance.py:1151}} INFO - Marking task as UP_FOR_RETRY
[2020-04-13 11:20:57,585] {{logging_mixin.py:112}} INFO - [2020-04-13 11:20:57,584] {{local_task_job.py:103}} INFO - Task exited with return code 1
I can't get it to work :/. Am I maybe adding - /var/run/docker.sock:/var/run/docker.sock the wrong way?
Thank you!
回答1:
I had the same problem on Linux, and thanks to How to mount docker socket as volume in docker container with correct group I solved it. Maybe my solution will help you.
I have next permissions on docker.sock:
srw-rw---- 1 root docker docker.sock
Dockerfile:
FROM puckel/docker-airflow:latest
USER root
ARG DOCKER_GROUP_ID
# Install Docker
RUN pip install 'Docker==4.2.0'
# Add permissions for running docker.sock
RUN groupadd -g $DOCKER_GROUP_ID docker && gpasswd -a airflow docker
USER airflow
Build Image with command:
docker build --rm --build-arg DOCKER_GROUP_ID=`getent group docker | cut -d: -f3` -t docker-airflow .
And run Container with:
docker run -d -p 8080:8080 -v /var/run/docker.sock://var/run/docker.sock -v /path/to/dags/on/your/local/machine/:/usr/local/airflow/dags docker-airflow webserver
来源：https://stackoverflow.com/questions/61186983/airflow-dockeroperator-connect-sock-connectself-unix-socket-filenotfounderror