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airflow + 为什么 airflow 返回不清楚的错误

[英]airflow + why airflow return unclear erros

 原文  2019-11-10 21:27:56  1   2    python/ airflow/ airflow-scheduler/ apache-airflow-xcom/ airflow-operator

问题描述

我在我的 Linux 服务器上使用 airflow 应用程序

注意 - Airflow 是一个以编程方式创作、安排和监控工作流的平台。

由于一些不清楚的原因，我们得到以下问题（当我们重新启动 airflow 或初始化数据库时，）

对于以下错误，我应该检查什么？

 airflow webserver
Traceback (most recent call last):
  File "/usr/bin/airflow", line 4, in <module>
    from airflow import configuration
  File "/usr/lib/python2.7/site-packages/airflow/__init__.py", line 29, in <module>
    from airflow import configuration as conf
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 657, in <module>
    conf.read(AIRFLOW_CONFIG)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 519, in read
    self._validate()
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 447, in _validate
    "sqlite" in self.get('core', 'sql_alchemy_conn')):
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 484, in get
    option = self._get_cmd_option(section, key)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 465, in _get_cmd_option
    return run_command(command)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 70, in run_command
    .format(command, process.returncode, output, stderr)
airflow.configuration.AirflowConfigException: Cannot execute python /home/airflow/.sec/security.py get_connection_string pg. Error code is: 1. Output: , Stderr: Traceback (most recent call last):
  File "/home/airflow/.sec/security.py", line 4, in <module>
    from cryptography.fernet import Fernet
ImportError: No module named cryptography.fernet



# airflow initdb
Traceback (most recent call last):
  File "/usr/bin/airflow", line 4, in <module>
    from airflow import configuration
  File "/usr/lib/python2.7/site-packages/airflow/__init__.py", line 29, in <module>
    from airflow import configuration as conf
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 657, in <module>
    conf.read(AIRFLOW_CONFIG)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 519, in read
    self._validate()
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 447, in _validate
    "sqlite" in self.get('core', 'sql_alchemy_conn')):
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 484, in get
    option = self._get_cmd_option(section, key)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 465, in _get_cmd_option
    return run_command(command)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 70, in run_command
    .format(command, process.returncode, output, stderr)
airflow.configuration.AirflowConfigException: Cannot execute python /home/airflow/.sec/security.py get_connection_string pg. Error code is: 1. Output: , Stderr: Traceback (most recent call last):
  File "/home/airflow/.sec/security.py", line 4, in <module>
    from cryptography.fernet import Fernet
ImportError: No module named cryptography.fernet




]# airflow list_dags
Traceback (most recent call last):
  File "/usr/bin/airflow", line 4, in <module>
    from airflow import configuration
  File "/usr/lib/python2.7/site-packages/airflow/__init__.py", line 29, in <module>
    from airflow import configuration as conf
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 657, in <module>
    conf.read(AIRFLOW_CONFIG)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 519, in read
    self._validate()
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 447, in _validate
    "sqlite" in self.get('core', 'sql_alchemy_conn')):
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 484, in get
    option = self._get_cmd_option(section, key)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 465, in _get_cmd_option
    return run_command(command)
  File "/usr/lib/python2.7/site-packages/airflow/configuration.py", line 70, in run_command
    .format(command, process.returncode, output, stderr)
airflow.configuration.AirflowConfigException: Cannot execute python /home/airflow/.sec/security.py get_connection_string pg. Error code is: 1. Output: , Stderr: Traceback (most recent call last):
  File "/home/airflow/.sec/security.py", line 4, in <module>
    from cryptography.fernet import Fernet
ImportError: No module named cryptography.fernet

我们也尝试

pip install "apache-airflow[crypto]"
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
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ERROR: airflow 1.7.1.3 has requirement alembic<0.9,>=0.8.3, but you'll have alembic 1.3.0 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement babel<2.0,>=1.3, but you'll have babel 2.7.0 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement flask<0.11,>=0.10.1, but you'll have flask 1.1.1 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement flask-admin==1.4.0, but you'll have flask-admin 1.5.3 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement flask-login==0.2.11, but you'll have flask-login 0.4.1 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement Flask-WTF==0.12, but you'll have flask-wtf 0.14.2 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement funcsigs<1,>=0.4, but you'll have funcsigs 1.0.0 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement future<0.16,>=0.15.0, but you'll have future 0.16.0 which is incompatible.
ERROR: airflow 1.7.1.3 has requirement gunicorn<19.4.0,>=19.3.0, but you'll have gunicorn 19.9.0 which is incompatible.
ERROR: jsonschema 3.1.1 has requirement six>=1.11.0, but you'll have six 1.9.0 which is incompatible.
ERROR: flask-jwt-extended 3.24.1 has requirement Werkzeug>=0.14, but you'll have werkzeug 0.12.1 which is incompatible.
Installing collected packages: flask, flask-admin, flask-login, flask-wtf, gunicorn, requests, prison, pyrsistent, attrs, contextlib2, scandir, pathlib2, more-itertools, zipp, importlib-metadata, functools32, jsonschema, flask-appbuilder, pytzdata, tzlocal, pendulum, psutil, ordereddict, funcsigs, future, alembic, json-merge-patch, iso8601, apache-airflow, Babel
  Found existing installation: Flask 0.10.1
    Uninstalling Flask-0.10.1:
      Successfully uninstalled Flask-0.10.1
  Found existing installation: Flask-Admin 1.4.0
    Uninstalling Flask-Admin-1.4.0:
      Successfully uninstalled Flask-Admin-1.4.0
    Running setup.py install for flask-admin ... done
  Found existing installation: Flask-Login 0.2.11
    Uninstalling Flask-Login-0.2.11:
      Successfully uninstalled Flask-Login-0.2.11
    Running setup.py install for flask-login ... done
  Found existing installation: Flask-WTF 0.12
    Uninstalling Flask-WTF-0.12:
      Successfully uninstalled Flask-WTF-0.12
  Found existing installation: gunicorn 19.3.0
    Uninstalling gunicorn-19.3.0:
      Successfully uninstalled gunicorn-19.3.0
  Found existing installation: requests 2.6.0
ERROR: Cannot uninstall 'requests'. It is a distutils installed project and thus we cannot accurately deter

airflow 脚本

!/usr/bin/python2
# PYTHON_ARGCOMPLETE_OK
# -*- coding: utf-8 -*-
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
import os

import argcomplete

from airflow.configuration import conf
from airflow.bin.cli import CLIFactory

if __name__ == '__main__':

    if conf.get("core", "security") == 'kerberos':
        os.environ['KRB5CCNAME'] = conf.get('kerberos', 'ccache')
        os.environ['KRB5_KTNAME'] = conf.get('kerberos', 'keytab')

    parser = CLIFactory.get_parser()
    argcomplete.autocomplete(parser)
    args = parser.parse_args()
    args.func(args)

似乎它没有将模块加载为：

airflow
Traceback (most recent call last):
  File "/usr/bin/airflow", line 25, in <module>
    from airflow.configuration import conf

2 个解决方案

解决方案1
 0  2019-11-11 16:06:35

你可以安装以下内容：

pip install "apache-airflow[crypto]"

这将加密 Airlfow MetaDB 中的密码字段（在 Airflow 连接中）

解决方案2
 0  2019-11-13 06:25:54

您是否在 airflow.cfg 上添加了 fernet 密钥？ 应该有一条线可以放置蕨类植物

# Secret key to save connection passwords in the db
fernet_key = {insert here}

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