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https://issues.apache.org/jira/browse/AIRFLOW-1134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031560#comment-16031560
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ErwanMAS commented on AIRFLOW-1134:
-----------------------------------
I had the same issue .
The solution was , PATH variable must be updated to have all the dependencies
of airflow ...
In this case, gunicorn was not in the PATH
> airflow webserver -p 8080,can't start the webserver
> ---------------------------------------------------
>
> Key: AIRFLOW-1134
> URL: https://issues.apache.org/jira/browse/AIRFLOW-1134
> Project: Apache Airflow
> Issue Type: Bug
> Components: webserver
> Affects Versions: Airflow 1.8
> Environment: centos6.5+python2.7.5+pip
> airflow1.8.0
> Reporter: Jepson
> Assignee: Jepson
> Labels: features, patch, test
> Original Estimate: 672h
> Remaining Estimate: 672h
>
> [root@hadoopdn-04 ~]# /usr/local/python27/bin/airflow webserver -D
> [2017-04-21 12:59:41,341] {__init__.py:57} INFO - Using executor
> SequentialExecutor
> Namespace(access_logfile='-', daemon=True, debug=False, error_logfile='-',
> func=<function webserver at 0x48fd320>, hostname='0.0.0.0', log_file=None,
> pid=None, port=8080, ssl_cert=None, ssl_key=None, stderr=None, stdout=None,
> subcommand='webserver', worker_timeout=120, workerclass='sync', workers=4)
> ____________ _____________
> ____ |__( )_________ __/__ /________ __
> ____ /| |_ /__ ___/_ /_ __ /_ __ \_ | /| / /
> ___ ___ | / _ / _ __/ _ / / /_/ /_ |/ |/ /
> _/_/ |_/_/ /_/ /_/ /_/ \____/____/|__/
>
> /usr/local/python27/lib/python2.7/site-packages/flask/exthook.py:71:
> ExtDeprecationWarning: Importing flask.ext.cache is deprecated, use
> flask_cache instead.
> .format(x=modname), ExtDeprecationWarning
> [2017-04-21 12:59:42,719] [1616] {models.py:167} INFO - Filling up the DagBag
> from /root/learnproject/app/airflow/dags
> Running the Gunicorn Server with:
> Workers: 4 sync
> Host: 0.0.0.0:8080
> Timeout: 120
> Logfiles: - -
> =================================================================
> Traceback (most recent call last):
> File "/usr/local/python27/bin/airflow", line 29, in <module>
> args.func(args)
> File "/usr/local/python27/lib/python2.7/site-packages/airflow/bin/cli.py",
> line 791, in webserver
> gunicorn_master_proc = subprocess.Popen(run_args)
> File "/usr/local/python27/lib/python2.7/subprocess.py", line 711, in
> __init__
> errread, errwrite)
> File "/usr/local/python27/lib/python2.7/subprocess.py", line 1308, in
> _execute_child
> raise child_exception
> OSError: [Errno 2] No such file or directory
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