[英]specifying dependencies needed for .py file run through BashOperator() with apache airflow
[英]BashOperator doen't run bash file apache airflow
我剛開始使用apache氣流。 我試圖從氣流運行test.sh文件,但它不起作用。
以下是我的代碼,文件名是test.py
import os
from airflow import DAG
from airflow.operators.bash_operator import BashOperator
from datetime import datetime, timedelta
default_args = {
'owner': 'airflow',
'depends_on_past': False,
'start_date': datetime(2015, 6, 1),
'email': ['airflow@airflow.com'],
'email_on_failure': False,
'email_on_retry': False,
'retries': 1,
'retry_delay': timedelta(minutes=5),
# 'queue': 'bash_queue',
# 'pool': 'backfill',
# 'priority_weight': 10,
# 'end_date': datetime(2016, 1, 1),
}
dag = DAG('test', default_args=default_args)
# t1 and t2 are examples of tasks created by instantiating operators
t1 = BashOperator(
task_id='print_date',
bash_command='date',
dag=dag)
create_command = "sh home/ubuntu/test/inst/scripts/test.sh"
if os.path.exists(create_command):
t2 = BashOperator(
task_id= 'cllTest',
bash_command=create_command,
dag=dag
)
else:
raise Exception("Cannot locate {}".format(create_command))
t2.set_upstream(t1)
當我運行python~ / airflow / dags / test.py時,它不會拋出任何錯誤。
但是,當我運行airflow list_dag時,它會拋出以下錯誤:
[2017-02-15 20:20:02,741] {__init__.py:36} INFO - Using executor SequentialExecutor
[2017-02-15 20:20:03,070] {models.py:154} INFO - Filling up the DagBag from /home/ubuntu/airflow/dags
[2017-02-15 20:20:03,135] {models.py:2040} ERROR - sh home/ubuntu/test/inst/scripts/test.sh
Traceback (most recent call last):
File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/airflow/models.py", line 2038, in resolve_template_files
setattr(self, attr, env.loader.get_source(env, content)[0])
File "/home/ubuntu/anaconda2/lib/python2.7/site-packages/jinja2/loaders.py", line 187, in get_source
raise TemplateNotFound(template)
TemplateNotFound: sh home/ubuntu/test/inst/scripts/test.sh
我曾嘗試使用如何在Airflow中運行bash腳本文件進行回答,但它不起作用
我在哪里弄錯了?
在.sh之后添加一個空格它應該工作,這在氣流的匯合頁面中提到
t2 = BashOperator(
task_id='sleep',
bash_command="/home/batcher/test.sh", // This fails with `Jinja template not found` error
#bash_command="/home/batcher/test.sh ", // This works (has a space after)
dag=dag)
只使用腳本路徑,沒有“sh”:create_command =“/ home / subuntu / test / inst / scripts / test.sh”
還要確保“airflow”用戶有權執行“test.sh”腳本。
嘗試沒有“sh”只需將命令設置為“home / ubuntu / test / inst / scripts / test.sh”
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