气流1.10安装失败

我有一个使用Airflow版本1.9的Airflow环境,该环境在Amazon EC2实例上运行.我需要升级到Airflow的最新版本1.10.我可以选择从1.9版升级或在新服务器上新安装1.10.气流版本1.10未在Pip上列出,所以我通过此命令从Git安装它,

pip-3.6 install git+git://github.com/apache/incubator-airflow.git@v1-10-stable

此命令成功安装Airflow版本1.10.您可以通过运行命令airflow version并查看输出来查看

  ____________       _____________
 ____    |__( )_________  __/__  /________      __
____  /| |_  /__  ___/_  /_ __  /_  __ \_ | /| / /
___  ___ |  / _  /   _  __/ _  / / /_/ /_ |/ |/ /
 _/_/  |_/_/  /_/    /_/    /_/  \____/____/|__/
   v1.10.0

当我尝试启动Airflow调度程序时,airflow scheduler我得到以下异常,

ModuleNotFoundError: No module named 'MySQLdb'
[2018-08-14 14:03:16,195] {celery_executor.py:112} ERROR - Error syncing the celery executor, ignoring it:
[2018-08-14 14:03:16,195] {celery_executor.py:113} ERROR - No module named 'MySQLdb'
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/airflow/executors/celery_executor.py", line 94, in sync
    state = task.state
  File "/usr/local/lib/python3.6/site-packages/celery/result.py", line 471, in state
    return self._get_task_meta()['status']
  File "/usr/local/lib/python3.6/site-packages/celery/result.py", line 410, in _get_task_meta
    return self._maybe_set_cache(self.backend.get_task_meta(self.id))
  File "/usr/local/lib/python3.6/site-packages/celery/backends/base.py", line 365, in get_task_meta
    meta = self._get_task_meta_for(task_id)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 53, in _inner
    return fun(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 122, in _get_task_meta_for
    session = self.ResultSession()
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 99, in ResultSession
    **self.engine_options)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 59, in session_factory
    engine, session = self.create_session(dburi, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 45, in create_session
    engine = self.get_engine(dburi, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 42, in get_engine
    return create_engine(dburi, poolclass=NullPool)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/engine/__init__.py", line 391, in create_engine
    return strategy.create(*args, **kwargs)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 80, in create
    dbapi = dialect_cls.dbapi(**dbapi_args)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/dialects/mysql/mysqldb.py", line 110, in dbapi
    return __import__('MySQLdb')
ModuleNotFoundError: No module named 'MySQLdb'
[2018-08-14 14:03:16,196] {celery_executor.py:112} ERROR - Error syncing the celery executor, ignoring it:
[2018-08-14 14:03:16,196] {celery_executor.py:113} ERROR - No module named 'MySQLdb'
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/airflow/executors/celery_executor.py", line 94, in sync
    state = task.state
  File "/usr/local/lib/python3.6/site-packages/celery/result.py", line 471, in state
    return self._get_task_meta()['status']
  File "/usr/local/lib/python3.6/site-packages/celery/result.py", line 410, in _get_task_meta
    return self._maybe_set_cache(self.backend.get_task_meta(self.id))
  File "/usr/local/lib/python3.6/site-packages/celery/backends/base.py", line 365, in get_task_meta
    meta = self._get_task_meta_for(task_id)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 53, in _inner
    return fun(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 122, in _get_task_meta_for
    session = self.ResultSession()
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 99, in ResultSession
    **self.engine_options)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 59, in session_factory
    engine, session = self.create_session(dburi, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 45, in create_session
    engine = self.get_engine(dburi, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 42, in get_engine
    return create_engine(dburi, poolclass=NullPool)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/engine/__init__.py", line 391, in create_engine
    return strategy.create(*args, **kwargs)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 80, in create
    dbapi = dialect_cls.dbapi(**dbapi_args)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/dialects/mysql/mysqldb.py", line 110, in dbapi
    return __import__('MySQLdb')
ModuleNotFoundError: No module named 'MySQLdb'
[2018-08-14 14:03:16,197] {celery_executor.py:112} ERROR - Error syncing the celery executor, ignoring it:
[2018-08-14 14:03:16,197] {celery_executor.py:113} ERROR - No module named 'MySQLdb'
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/airflow/executors/celery_executor.py", line 94, in sync
    state = task.state
  File "/usr/local/lib/python3.6/site-packages/celery/result.py", line 471, in state
    return self._get_task_meta()['status']
  File "/usr/local/lib/python3.6/site-packages/celery/result.py", line 410, in _get_task_meta
    return self._maybe_set_cache(self.backend.get_task_meta(self.id))
  File "/usr/local/lib/python3.6/site-packages/celery/backends/base.py", line 365, in get_task_meta
    meta = self._get_task_meta_for(task_id)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 53, in _inner
    return fun(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 122, in _get_task_meta_for
    session = self.ResultSession()
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/__init__.py", line 99, in ResultSession
    **self.engine_options)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 59, in session_factory
    engine, session = self.create_session(dburi, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 45, in create_session
    engine = self.get_engine(dburi, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/celery/backends/database/session.py", line 42, in get_engine
    return create_engine(dburi, poolclass=NullPool)
  File "/usr/local/lib64/python3.6/site-packages/sqlalchemy/engine/__init__.py", line 391, in create_engine
    return strategy.create(*args^C[2018-08-14 14:03:16,424] {jobs.py:1585} INFO - Exited execute loop
[2018-08-14 14:03:16,433] {jobs.py:1599} INFO - Terminating child PID: 13615

这是我的lib文件夹,

[/usr/local/lib/python3.6/site-packages]# cd /usr/local/lib64/python3.6/site-packages/sqlalchemy/
root@ip-1-2-3-4
[/usr/local/lib64/python3.6/site-packages/sqlalchemy]# ll
total 320
drwxr-xr-x  3 root root  4096 Aug 13 17:17 connectors
-rwxr-xr-x  1 root root 40456 Aug 13 17:17 cprocessors.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x  1 root root 51408 Aug 13 17:17 cresultproxy.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x  1 root root 21944 Aug 13 17:17 cutils.cpython-36m-x86_64-linux-gnu.so
drwxr-xr-x  3 root root  4096 Aug 13 17:17 databases
drwxr-xr-x 10 root root  4096 Aug 13 17:17 dialects
drwxr-xr-x  3 root root  4096 Aug 13 17:17 engine
drwxr-xr-x  3 root root  4096 Aug 13 17:17 event
-rwxr-xr-x  1 root root 49746 Mar  6 14:01 events.py
-rwxr-xr-x  1 root root 12030 Mar  6 14:01 exc.py
drwxr-xr-x  4 root root  4096 Aug 13 17:17 ext
-rwxr-xr-x  1 root root  2249 Mar  6 14:01 __init__.py
-rwxr-xr-x  1 root root  3093 Mar  6 14:01 inspection.py
-rwxr-xr-x  1 root root 10967 Mar  6 14:01 interfaces.py
-rwxr-xr-x  1 root root  6712 Mar  6 14:01 log.py
drwxr-xr-x  3 root root  4096 Aug 13 17:17 orm
-rwxr-xr-x  1 root root 49883 Mar  6 14:01 pool.py
-rwxr-xr-x  1 root root  5217 Mar  6 14:01 processors.py
drwxr-xr-x  2 root root  4096 Aug 13 17:17 __pycache__
-rwxr-xr-x  1 root root  1200 Mar  6 14:01 schema.py
drwxr-xr-x  3 root root  4096 Aug 13 17:17 sql
drwxr-xr-x  5 root root  4096 Aug 13 17:17 testing
-rwxr-xr-x  1 root root  1713 Mar  6 14:01 types.py
drwxr-xr-x  3 root root  4096 Aug 13 17:17 util
root@ip-1-2-3-4
[/usr/local/lib64/python3.6/site-packages/sqlalchemy]# pwd
/usr/local/lib64/python3.6/site-packages/sqlalchemy
root@ip-1-2-3-4
[/usr/local/lib64/python3.6/site-packages/sqlalchemy]# cd /usr/local/lib/python3.6/site-packages/sqlalchemy/
bash: cd: /usr/local/lib/python3.6/site-packages/sqlalchemy/: No such file or directory

我很困惑为什么Airflow的安装没有处理所有需要的依赖项.我是否错误地安装了Airflow？我真的需要在版本1.10上,因为版本1.9在这里和这里发现了一个主要的错误.

在进行全新安装时,可以提供许多安装附加功能("可选依赖项").默认情况下,Airflow不会安装它们,因为有几十个,有些需要特殊的依赖,如Mesos或Kubernetes.

https://airflow.readthedocs.io/en/stable/installation.html#extra-packages

请注意,对于1.10,您现在需要先安装命令或导出此env var:

export SLUGIFY_USES_TEXT_UNIDECODE=yes

一旦1.10发布,你将能够安装这样的额外内容:

pip install apache-airflow[celery,devel,postgres]

从git安装时,用于安装附加组件的pip语法稍微复杂一些:

pip install git+git://github.com/apache/incubator-airflow.git@v1-10-stable#egg=apache-airflow[celery,devel,postgres]

如果您尝试使用MySQL支持安装Airflow,则可以包含mysql额外内容:

pip install git+git://github.com/apache/incubator-airflow.git@v1-10-stable#egg=apache-airflow[mysql]

如果你真的想安装所有额外的东西,你可以使用all额外的:

pip install git+git://github.com/apache/incubator-airflow.git@v1-10-stable#egg=apache-airflow[all]

注意:如果您之前apache-airflow在PyPI 上安装了1.9的额外内容,那么在从GitHub安装1.10时需要再次提供它们,因为pip不会将GitHub repo与PyPI包关联.

问题

你在运行Python 3.6.5吗？

如果mysql在安装时包含额外的内容,您是否仍会遇到相同的错误？