{"id":36007,"date":"2022-12-29T23:39:51","date_gmt":"2023-11-03T12:29:18","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90kubernetes%e3%80%91%e4%bd%bf%e7%94%a8kubernetes%e6%9e%84%e5%bb%ba%e6%9c%80%e5%bc%baetl%e5%9f%ba%e7%a1%80%e8%ae%be%e6%96%bd%e3%80%90airflow%e3%80%91\/"},"modified":"2024-04-29T07:35:20","modified_gmt":"2024-04-28T23:35:20","slug":"%e3%80%90kubernetes%e3%80%91%e4%bd%bf%e7%94%a8kubernetes%e6%9e%84%e5%bb%ba%e6%9c%80%e5%bc%baetl%e5%9f%ba%e7%a1%80%e8%ae%be%e6%96%bd%e3%80%90airflow%e3%80%91","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90kubernetes%e3%80%91%e4%bd%bf%e7%94%a8kubernetes%e6%9e%84%e5%bb%ba%e6%9c%80%e5%bc%baetl%e5%9f%ba%e7%a1%80%e8%ae%be%e6%96%bd%e3%80%90airflow%e3%80%91\/","title":{"rendered":"\u3010Kubernetes\u3011\u4f7f\u7528Kubernetes\u6784\u5efa\u6700\u5f3aETL\u57fa\u7840\u8bbe\u65bd\u3010Airflow\u3011"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u53bb\u5e74\u5e74\u5e95\u6211\u8bd5\u7740\u7528\u4e86\u4e00\u4e0bAirflow\uff0c\u89c9\u5f97\u975e\u5e38\u65b9\u4fbf\u3002
\n\u6700\u8fd1\u7ecf\u5e38\u542c\u5230Airflow\u8fd9\u4e2a\u8bcd\uff0c\u6211\u5c1d\u8bd5\u5165\u95e8\u5b83\u4e86\uff01\u5728EC2\u4e0a\u5c1d\u8bd5\u8fd0\u884c\u4e86\u4e00\u4e0b\u3010\u6301\u7eed\u96c6\u6210\/\u6301\u7eed\u4ea4\u4ed8\u3011\u3002<\/p>\n

\u4e8e\u662f\u4f5c\u4e3a\u4e0b\u4e00\u6b65\uff0c\u6211\u5c1d\u8bd5\u4e0eKubernetes\u8fdb\u884c\u96c6\u6210\u3002\u6211\u641c\u7d22\u4e86\u4e00\u4e0b\uff0c\u4f3c\u4e4e\u6709\u4e00\u4e2a\u88ab\u79f0\u4e3a\u201cAirflow on Kubernetes\u201d\u7684\u9879\u76ee\u3002\u636e\u6211\u6240\u67e5\uff0c\u65e5\u8bed\u7684\u6587\u7ae0\u5e76\u4e0d\u591a\uff0c\u6211\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u5927\u5bb6\u6709\u5e2e\u52a9\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u5bf9\u4e0a\u8ff0\u5185\u5bb9\u7684\u4e2d\u6587\u8868\u8fbe:<\/p>\n

=====2020\u5e741\u67087\u65e5 \u66f4\u65b0=====
\n\u4ee5\u4e0b\u662f\u76f8\u5173\u6587\u7ae0\u7684\u94fe\u63a5\uff1a
\n\u3010\u5728Kubernetes\u4e0a\u4f7f\u7528Airflow\u3011\u5173\u4e8e\u6784\u5efaDocker\u955c\u50cf\u548c\u90e8\u7f72Pod\u7684\u673a\u5236
\n\u3010\u5728Kubernetes\u4e0a\u4f7f\u7528Airflow\u3011\u4f7f\u7528KubernetesPodOperator\u7684\u65b9\u6cd5<\/p>\n

Airflow\u5728Kubernetes\u4e0a\u662f\u4ec0\u4e48\uff1f<\/h1>\n

Airflow\u662f\u4e00\u79cd\u80fd\u591f\u8fdb\u884c\u4efb\u52a1\u8c03\u5ea6\u548cGUI\u7ba1\u7406\u6267\u884c\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u901a\u8fc7\u6784\u5efa\u96c6\u7fa4\u6765\u5904\u7406\u6784\u5efa\u7684DAG\u3002\u800c\u5728Kubernetes\u4e0a\u90e8\u7f72Airflow\u7684Pod\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528Kubernetes\u96c6\u7fa4\u6765\u5b9e\u73b0Airflow\u6240\u7ba1\u7406\u7684\u5904\u7406\u3002<\/p>\n

\u53ef\u4ee5\u5229\u7528\u73b0\u6709\u7684Kubernetes\u73af\u5883\u6784\u5efaETL\u57fa\u7840\u8bbe\u65bd\uff0c\u800c\u65e0\u9700\u4e13\u95e8\u7ec4\u5efa\u96c6\u7fa4\uff0c\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u7a7a\u6c14\u6d41\u901a\u3002<\/p>\n

\u5efa\u7acb\u73af\u5883<\/h1>\n

\u6211\u5011\u53ef\u4ee5\u5feb\u901f\u5730\u901a\u904e\u5169\u500b\u6b65\u9a5f\u4f86\u5efa\u7acb\u74b0\u5883\uff0c\u4f46\u662f\u7531\u65bc\u6709\u4e00\u4e9b\u9677\u9631\uff0c\u6211\u5011\u4e5f\u6703\u6574\u7406\u5b83\u5011\u3002
\n\u6b65\u9a5f\u4e00\uff1a\u5efa\u7acb Kubernetes \u96c6\u7fa4
\n\u6b65\u9a5f\u4e8c\uff1a\u5728 Kubernetes \u4e0a\u90e8\u7f72 Airflow<\/p>\n

\u6b65\u9aa41\uff1a\u5efa\u7acbKubernetes\u96c6\u7fa4<\/h2>\n

\u6211\u8ba4\u4e3a\u6709\u5f88\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u6240\u4ee5\u60a8\u53ef\u4ee5\u9009\u62e9\u60a8\u559c\u6b22\u7684\u65b9\u6cd5\u8fdb\u884c\u64cd\u4f5c\u3002
\n\u6211\u5728\u4ee5\u4e0b\u7684\u6587\u7ae0\u4e2d\u4f7f\u7528kubeadm\u5728AWS\u4e0a\u7684CentOS 7\u4e0a\u5b89\u88c5\u4e86Kubernetes 1.11\u3002<\/p>\n

\u8bf7\u7559\u610f<\/h5>\n

\u6211\u8ba4\u4e3a\uff0c\u5982\u679c\u4e00\u5f00\u59cb\u5c1d\u8bd5\u4f7f\u7528t2.micro\u8fdb\u884c\u6784\u5efa\uff0c\u5219\u7531\u4e8e\u5185\u5b58\u9519\u8bef\uff0cpod\u53ef\u80fd\u4f1a\u88ab\u9a71\u9010\u5e76\u65e0\u6cd5\u6b63\u5e38\u8fd0\u884c\u3002\u56e0\u6b64\uff0c\u81f3\u5c11\u4f7f\u7528t2.small\u6765\u6784\u5efa\u4e3b\u8282\u70b9\/\u5de5\u4f5c\u8282\u70b9\u5e94\u8be5\u662f\u4e2a\u597d\u4e3b\u610f\u3002<\/p>\n

\u7b2c\u4e8c\u6b65\uff1a\u5728Kubernetes\u4e2d\u90e8\u7f72Airflow\u3002<\/h2>\n

\u9996\u5148\uff0c\u9700\u8981\u5728\u4e3b\u673a\u4e0a\u5b89\u88c5Git\u3002<\/p>\n

sudo yum install git\r\n<\/code><\/pre>\n
\u4f7f\u7528Git\u547d\u4ee4\u514b\u9686\u5b98\u65b9\u7684Airflow\u4ed3\u5e93\u3002<\/p>\n
git clone https:\/\/github.com\/apache\/incubator-airflow.git\r\n<\/code><\/pre>\n
\u63a5\u4e0b\u6765\uff0c\u5207\u6362\u5230\u76ee\u5f55\u5e76\u6267\u884c\u4ee5\u4e0b\u811a\u672c\u3002<\/p>\n
cd incubator-airflow\/scripts\/ci\/kubernetes\r\n.\/docker\/build.sh\r\n<\/code><\/pre>\n
\u8fd0\u884c\u8fd9\u4e2a\u811a\u672c\u4f1a\u751f\u6210Airflow\u7684\u955c\u50cf\u3002\u5f53\u7136\u63a5\u4e0b\u6765\u9700\u8981\u90e8\u7f72\uff0c\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a<\/p>\n
\u6ce8\u610f\u8981\u70b9<\/h6>\n
\u4e0d\u4ec5\u4e3b\u8282\u70b9\uff0c\u6240\u6709\u5de5\u4f5c\u8282\u70b9\u90fd\u9700\u8981airflow\u7684\u6620\u50cf\u3002\u5982\u679c\u6ca1\u6709\u8fd9\u4e2a\u6620\u50cf\uff0c\u5c06\u65e0\u6cd5\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n
\u5f53\u6240\u6709\u8282\u70b9\u90fd\u6210\u529f\u521b\u5efa\u4e86Airflow\u7684\u955c\u50cf\u540e\uff0c\u6211\u4eec\u5c06\u5728\u4e3b\u8282\u70b9\u53ca\u4ee5\u4e0b\u8282\u70b9\u6267\u884c\u547d\u4ee4\u3002<\/p>\n
.\/kube\/deploy.sh -d persistent_mode\r\n<\/code><\/pre>\n
\u6700\u7ec8\uff0cAirflow\u7684Pod\u90e8\u7f72\u72b6\u6001\u5c06\u901a\u8fc7echo\u6301\u7eed\u8f93\u51fa\u3002\u5982\u679c\u6240\u6709\u8282\u70b9\u4e0a\u90fd\u5df2\u521b\u5efa\u4e86Airflow\u955c\u50cf\uff0c\u90a3\u4e48\u6211\u8ba4\u4e3aAirflow\u548cPostgreSQL\u7684Pod\u5e94\u8be5\u5df2\u7ecf\u6210\u529f\u90e8\u7f72\u4e86\u3002<\/p>\n
\u5982\u679c\u51fa\u73b0\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528Ctl+C\u505c\u6b62\u8f93\u51fa\uff0c\u7136\u540e\u4f7f\u7528kubectl describe pod\/[aiflow\u7684pod\u540d]\u67e5\u770b\u65e0\u6cd5\u90e8\u7f72\u7684\u539f\u56e0\u3002<\/p>\n
\u73b0\u5728\u73af\u5883\u5efa\u8bbe\u5df2\u7ecf\u5b8c\u6210\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u5f00\u59cb\u5b9e\u9645\u8fd0\u884c\u3002<\/p>\n
\u5b9e\u8df5\uff01Kubernetes \u4e0a\u7684 Airflow\u3002<\/h1>\n
\u53ea\u8981\u5230\u4e86\u8fd9\u4e00\u6b65\uff0c\u5c31\u7b80\u5355\u4e86\u3002\u53ea\u9700\u5728Airflow\u7684\u7ba1\u7406\u9875\u9762\u4e0a\u8fd0\u884c\u6240\u521b\u5efa\u7684DAG\u5373\u53ef\u3002<\/p>\n
\u7a7a\u6c14\u6d41\u7ba1\u7406\u754c\u9762<\/h2>\n
\u901a\u8fc7\u5c06\u90e8\u7f72\u7684Airflow Pod\u8fdb\u884c\u7aef\u53e3\u8f6c\u53d1\uff0c\u53ef\u4ee5\u8bbf\u95ee\u7ba1\u7406\u754c\u9762\u3002<\/p>\n
kubectl port-forward [Airflow\u306e\u30dd\u30c3\u30c9\u540d] 8080:8080 --address=\"0.0.0.0\"\r\n<\/code><\/pre>\n
\u7531\u4e8eAirflow\u7684\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u57288080\u7aef\u53e3\u8fd0\u884c\uff0c\u56e0\u6b64\u9700\u8981\u5c068080\u7aef\u53e3\u8fdb\u884c\u7aef\u53e3\u8f6c\u53d1\u3002\u4e3a\u4e86\u63a5\u53d7\u6765\u81ea\u5916\u90e8\u7684\u8bbf\u95ee\uff0c\u8fd8\u9700\u8981\u4f7f\u7528\u9009\u9879—address=”0.0.0.0″\u3002<\/p>\n
\u5982\u679c\u80fd\u591f\u901a\u8fc7\u8bbf\u95ee http:\/\/[kubernetes\u7684master\u7684IP]:8080\/ \u5e76\u6253\u5f00\u4ee5\u4e0b\u754c\u9762\uff0c\u90a3\u5c31\u4ee3\u8868\u6210\u529f\u4e86\u3002<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u4e3b\u8981\u662f\u5728\u8fd9\u91cc\u8fdb\u884cDAG\u7684\u7ba1\u7406\uff0c\u4f46\u662f\u8fd9\u91cc\u5217\u51fa\u7684\u793a\u4f8b\u811a\u672c\u5728\u54ea\u513f\u5462\uff1f<\/p>\n
\u7b54\u6848\u5c31\u5728Airflow\u7684\u5bb9\u5668\u4e2d\u3002<\/p>\n
DAG\u811a\u672c\u7684\u7ba1\u7406<\/h2>\n
\u8fdb\u5165Airflow Pod\u7684\u547d\u4ee4\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
kubectl exec -it [Airflow\u30dd\u30c3\u30c9\u540d] \/bin\/bash\r\n<\/code><\/pre>\n
DAG\u811a\u672c\u7684\u7ba1\u7406\u4f4d\u4e8e\u4ee5\u4e0b\u76ee\u5f55\u8def\u5f84\u4e2d\u3002<\/p>\n
root@[Airflow\u30dd\u30c3\u30c9\u540d]:~#cd root\/airflow\/dags\/\r\nroot@[Airflow\u30dd\u30c3\u30c9\u540d]:~\/airflow\/das\/# ls\r\n__init__.py                               example_docker_operator.py              example_passing_params_via_test_command.py   example_xcom.py\r\n__init__.pyc                              example_docker_operator.pyc             example_passing_params_via_test_command.pyc  example_xcom.pyc\r\ndev_etl.py                                example_http_operator.py                example_python_operator.py                   libs\r\ndev_etl.pyc                               example_http_operator.pyc               example_python_\r\n<\/code><\/pre>\n
\u8bf7\u95ee\u4e0a\u8ff0\u6587\u4ef6\u540d\u662f\u5426\u4e0e\u7ba1\u7406\u754c\u9762\u7684DAG\u540d\u79f0\u76f8\u7b26\uff1f\u5982\u679c\u662f\u7684\u8bdd\uff0c\u5c06\u751f\u6210\u7684DAG\u811a\u672c\u653e\u5165\u6b64\u76ee\u5f55\u5373\u53ef\u5728\u7ba1\u7406\u754c\u9762\u4e2d\u6267\u884c\u3002\uff08dev_etl.py\u662f\u6211\u81ea\u5df1\u7f16\u5199\u7684DAG\u3002\uff09<\/p>\n
\u5728Airflow\u7684pod\u4e2d\u4e0d\u80fd\u4f7f\u7528vim\uff0c\u56e0\u6b64\u5efa\u8bae\u4f7f\u7528apt-get install vim\u547d\u4ee4\u5b89\u88c5vim\uff0c\u6216\u8005\u4f7f\u7528kubectl cp [\u811a\u672c\u540d] [Airflow pod\u540d\u79f0]:\/root\/airflow\/dags\/\u547d\u4ee4\u5c06\u811a\u672c\u53d1\u9001\u5230pod\u4e2d\u3002<\/p>\n
DAG\u6267\u884c<\/h2>\n
\u73b0\u5728\u53ea\u9700\u6267\u884c\u4e86\u3002<\/p>\n
\u53ea\u9700\u5c06\u5de6\u4fa7\u7684\u5f00\u5173\u6253\u5f00\u5373\u53ef\u6267\u884c\u3002\u6253\u5f00\u540e\uff0cDAG\u5c06\u6839\u636eSchedule\u680f\u4e2d\u7684\u65f6\u95f4\u8fdb\u884c\u6267\u884c\u3002\u5982\u679c\u60f3\u7acb\u5373\u6267\u884c\uff0c\u5728Links\u680f\u4e2d\u6309\u4e0b\u6700\u5de6\u4fa7\u7684\u6309\u94ae\uff0c\u65e0\u8bbaSchedule\u5982\u4f55\uff0c\u90fd\u4f1a\u7acb\u5373\u6267\u884c\u3002<\/p>\n
\u8bd5\u8bd5\u8fd0\u884c\u4e00\u4e2a\u540d\u4e3aexample_bash_operator\u7684DAG\u3002<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u6211\u8ba4\u4e3a\uff0c\u5728DAG\u5f00\u59cb\u6267\u884c\u4e4b\u540e\uff0c\u901a\u8fc7kubectl get pod\u547d\u4ee4\u6765\u68c0\u67e5pod\uff0c\u7ed3\u679c\u5e94\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u6211\u53ef\u4ee5\u770b\u5230\u5df2\u90e8\u7f72\u4e86\u4e00\u4e2a\u540d\u4e3aDAG\u4efb\u52a1ID-~\u7684Pod\u540d\u79f0\u3002<\/p>\n
\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u8fd9\u4e2aDAG\u811a\u672c\u662f\u7528\u4ee5\u4e0b\u7684Python\u4ee3\u7801\u7f16\u5199\u7684\u3002<\/p>\n
from<\/span> builtins<\/span> import<\/span> range<\/span>\r\nfrom<\/span> datetime<\/span> import<\/span> timedelta<\/span>\r\n\r\nimport<\/span> airflow<\/span>\r\nfrom<\/span> airflow.models<\/span> import<\/span> DAG<\/span>\r\nfrom<\/span> airflow.operators.bash_operator<\/span> import<\/span> BashOperator<\/span>\r\nfrom<\/span> airflow.operators.dummy_operator<\/span> import<\/span> DummyOperator<\/span>\r\n\r\nargs<\/span> =<\/span> {<\/span>\r\n    'owner'<\/span>:<\/span> 'airflow'<\/span>,<\/span>\r\n    'start_date'<\/span>:<\/span> airflow<\/span>.<\/span>utils<\/span>.<\/span>dates<\/span>.<\/span>days_ago<\/span>(<\/span>2<\/span>),<\/span>\r\n}<\/span>\r\n\r\ndag<\/span> =<\/span> DAG<\/span>(<\/span>\r\n    dag_id<\/span>=<\/span>'example_bash_operator'<\/span>,<\/span>\r\n    default_args<\/span>=<\/span>args<\/span>,<\/span>\r\n    schedule_interval<\/span>=<\/span>'0 0 * * *'<\/span>,<\/span>\r\n    dagrun_timeout<\/span>=<\/span>timedelta<\/span>(<\/span>minutes<\/span>=<\/span>60<\/span>),<\/span>\r\n)<\/span>\r\n\r\nrun_this_last<\/span> =<\/span> DummyOperator<\/span>(<\/span>\r\n    task_id<\/span>=<\/span>'run_this_last'<\/span>,<\/span>\r\n    dag<\/span>=<\/span>dag<\/span>,<\/span>\r\n)<\/span>\r\n\r\n# [START howto_operator_bash]\r\n<\/span>run_this<\/span> =<\/span> BashOperator<\/span>(<\/span>\r\n    task_id<\/span>=<\/span>'run_after_loop'<\/span>,<\/span>\r\n    bash_command<\/span>=<\/span>'echo 1'<\/span>,<\/span>\r\n    dag<\/span>=<\/span>dag<\/span>,<\/span>\r\n)<\/span>\r\n# [END howto_operator_bash]\r\n<\/span>\r\nrun_this<\/span> >><\/span> run_this_last<\/span>\r\n\r\nfor<\/span> i<\/span> in<\/span> range<\/span>(<\/span>3<\/span>):<\/span>\r\n    task<\/span> =<\/span> BashOperator<\/span>(<\/span>\r\n        task_id<\/span>=<\/span>'runme_'<\/span> +<\/span> str<\/span>(<\/span>i<\/span>),<\/span>\r\n        bash_command<\/span>=<\/span>'echo \"{{ task_instance_key_str }}\" && sleep 1'<\/span>,<\/span>\r\n        dag<\/span>=<\/span>dag<\/span>,<\/span>\r\n    )<\/span>\r\n    task<\/span> >><\/span> run_this<\/span>\r\n\r\n# [START howto_operator_bash_template]\r\n<\/span>also_run_this<\/span> =<\/span> BashOperator<\/span>(<\/span>\r\n    task_id<\/span>=<\/span>'also_run_this'<\/span>,<\/span>\r\n    bash_command<\/span>=<\/span>'echo \"run_id={{ run_id }} | dag_run={{ dag_run }}\"'<\/span>,<\/span>\r\n    dag<\/span>=<\/span>dag<\/span>,<\/span>\r\n)<\/span>\r\n# [END howto_operator_bash_template]\r\n<\/span>also_run_this<\/span> >><\/span> run_this_last<\/span>\r\n\r\nif<\/span> __name__<\/span> ==<\/span> \"__main__\"<\/span>:<\/span>\r\n    dag<\/span>.<\/span>cli<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u65e0\u9700\u7279\u6b8a\u8bbe\u7f6e\uff0cAirflow\u7ba1\u7406\u5e76\u6267\u884c\u7684DAG\u5c06\u81ea\u52a8\u90e8\u7f72\u5728Kubernetes\u4e0a\uff0c\u6b63\u5982\u4ece\u6b64\u811a\u672c\u6240\u4e86\u89e3\u7684\u3002<\/p>\n
\u7136\u800c\uff0c\u4e0a\u8ff0\u90e8\u7f72\u7684\u5bb9\u5668\u955c\u50cf\u662f\u4ec0\u4e48\u5462\uff1f<\/p>\n
\u4f7f\u7528Airflow\u751f\u6210DAG\u65f6\u6307\u5b9a\u56fe\u50cf<\/h2>\n
\u6211\u4e2a\u4eba\u7684\u8c03\u67e5\u7ed3\u679c\u662f\u201cairflow:latest\u201d\u3002
\n\u55ef\uff01\u8fd9\u4e2a\u662f\u6211\u5728\u8c03\u67e5\u4e2d\u53d1\u73b0\u7684\uff0c\u5728\u90e8\u7f72\u4e2d\u9700\u8981\u4f7f\u7528\u7684\u955c\u50cf\u5c31\u662fAirflow on Kubernetes\u7684\u9ed8\u8ba4\u955c\u50cf\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u6307\u5b9a\u4e86 airflow:latest \u7684DAG \u811a\u672c\u3002<\/p>\n
from __future__ import print_function\r\nimport airflow\r\nfrom airflow.operators.python_operator import PythonOperator\r\nfrom airflow.operators.bash_operator import BashOperator\r\nfrom libs.helper import print_stuff\r\nfrom airflow.models import DAG\r\nimport os\r\n\r\nargs = {\r\n    'owner': 'airflow',\r\n    'start_date': airflow.utils.dates.days_ago(2)\r\n}\r\n\r\ndag = DAG(\r\n    dag_id='dev_etl', default_args=args,\r\n    schedule_interval=None\r\n)\r\n\r\n\r\ndef test_volume_mount():\r\n    print()    \r\n\r\n\r\n# You can use annotations on your kubernetes pods!\r\nstart_task = PythonOperator(\r\n    task_id=\"start_task\", python_callable=print_stuff, dag=dag,\r\n    executor_config={\r\n        \"KubernetesExecutor\": {\r\n            \"annotations\": {\"test\": \"annotation\"}\r\n        }\r\n    }\r\n)\r\n\r\n# You can mount volume or secret to the worker pod\r\nsecond_task = BashOperator(\r\n    task_id=\"four_task\", bash_command='python \/tmp\/script\/airflow_on_kubernetes.py', dag=dag,\r\n    executor_config={\"KubernetesExecutor\": {\"image\": \"airflow:latest\"}}\r\n)\r\n\r\nstart_task.set_downstream(second_task)\r\n<\/code><\/pre>\n
\u6267\u884c\u7ed3\u679c\u4e0e\u4e4b\u524d\u7684\u7ed3\u679c\u6ca1\u6709\u53d8\u5316\u3002\u63a5\u4e0b\u6765\u5c06\u8fd9\u4e2aimage\u66f4\u6362\u6210Docker Hub\u4e0a\u7684\u53e6\u4e00\u4e2aimage\u5e76\u5c1d\u8bd5\u6267\u884c\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u9519\u8bef\u3002\uff08\u6211\u81ea\u5df1\u4e5f\u591a\u6b21\u9047\u5230\u9519\u8bef\u3002\uff09<\/p>\n
Airflow\u7684\u4e00\u4e2a\u9057\u61be\u4e4b\u5904\u662f\u5f53pod\u672a\u90e8\u7f72\u65f6\u65e0\u6cd5\u8f93\u51fa\u65e5\u5fd7(Airflow\u6267\u884c\u7684DAG\u70b9\u51fb\u2192TreeView\u7ea2\u8272\u65b9\u5757\u70b9\u51fb\u2192\u67e5\u770b\u65e5\u5fd7)\u3002\u56e0\u6b64\uff0c\u8981\u627e\u51fa\u4e3a\u4ec0\u4e48\u6307\u5b9a\u4e0d\u540c\u7684\u955c\u50cf\u4f1a\u5931\u8d25\u82b1\u8d39\u4e86\u5f88\u957f\u65f6\u95f4\u3002<\/p>\n
\u5076\u7136\u5728\u90e8\u7f72pod\u5931\u8d25\u65f6\u5c1d\u8bd5\u4f7f\u7528describe\u8f93\u51fa\u65e5\u5fd7\uff0c\u7ed3\u679c\u663e\u793a\u51fa\u4e86\u201cairflow\u547d\u4ee4\u627e\u4e0d\u5230\u201d\u7684\u9519\u8bef\uff0c\u6211\u5f97\u51fa\u4e86\u8fd9\u4e2a\u7ed3\u8bba\u3002<\/p>\n
\u6240\u4ee5\uff0c\u5982\u679c\u4ee5\u540e\u8981\u6307\u5b9a\u56fe\u50cf\uff0c\u53ef\u80fd\u8981\u4e48\u4ee5\u8fd9\u4e2aAirflow\u56fe\u50cf\u4e3a\u57fa\u7840\uff0c\u8981\u4e48\u521b\u5efa\u4e00\u4e2a\u80fd\u4f7f\u7528Airflow\u547d\u4ee4\u7684\u56fe\u50cf\u3002<\/p>\n
\u5f53\u6211\u4eec\u80fd\u591f\u6307\u5b9a\u6620\u50cf\u540e\uff0c\u4e0b\u4e00\u6b65\u6211\u4eec\u60f3\u8981\u5c1d\u8bd5\u5c06\u5176\u6302\u8f7d\u5230\u4e3b\u673a\u4e0a\u3002<\/p>\n
\u4f7f\u7528Airflow\u7684\u8bdd\uff0c\u53ef\u4ee5\u751f\u6210\u5df2\u5728\u4e3b\u673a\u4e0a\u8fdb\u884c\u6302\u8f7d\u8bbe\u7f6e\u7684DAG\u3002<\/h2>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684ETL\u7684DAG\u793a\u4f8b\uff0c\u5c06\u6570\u636e\u4ece\u6570\u636e\u5e93\u670d\u52a1\u5668\u4e2d\u83b7\u53d6\u7684\u503c\u5199\u5165\u5230\u6700\u540e\u6302\u8f7d\u7684\u76ee\u5f55\u4e2d\u4fdd\u5b58\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n
from<\/span> __future__<\/span> import<\/span> print_function<\/span>\r\nimport<\/span> airflow<\/span>\r\nfrom<\/span> airflow.operators.python_operator<\/span> import<\/span> PythonOperator<\/span>\r\nfrom<\/span> airflow.operators.bash_operator<\/span> import<\/span> BashOperator<\/span>\r\nfrom<\/span> libs.helper<\/span> import<\/span> print_stuff<\/span>\r\nfrom<\/span> airflow.models<\/span> import<\/span> DAG<\/span>\r\nimport<\/span> os<\/span>\r\n\r\nargs<\/span> =<\/span> {<\/span>\r\n    'owner'<\/span>:<\/span> 'airflow'<\/span>,<\/span>\r\n    'start_date'<\/span>:<\/span> airflow<\/span>.<\/span>utils<\/span>.<\/span>dates<\/span>.<\/span>days_ago<\/span>(<\/span>2<\/span>)<\/span>\r\n}<\/span>\r\n\r\ndag<\/span> =<\/span> DAG<\/span>(<\/span>\r\n    dag_id<\/span>=<\/span>'dev_etl'<\/span>,<\/span> default_args<\/span>=<\/span>args<\/span>,<\/span>\r\n    schedule_interval<\/span>=<\/span>None<\/span>\r\n)<\/span>\r\n\r\n# You can use annotations on your kubernetes pods!\r\n<\/span>start_task<\/span> =<\/span> PythonOperator<\/span>(<\/span>\r\n    task_id<\/span>=<\/span>\"start_task\"<\/span>,<\/span> python_callable<\/span>=<\/span>print_stuff<\/span>,<\/span> dag<\/span>=<\/span>dag<\/span>,<\/span>\r\n    executor_config<\/span>=<\/span>{<\/span>\r\n        \"KubernetesExecutor\"<\/span>:<\/span> {<\/span>\r\n            \"annotations\"<\/span>:<\/span> {<\/span>\"test\"<\/span>:<\/span> \"annotation\"<\/span>}<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n)<\/span>\r\n\r\n# You can mount volume or secret to the worker pod\r\n<\/span>second_task<\/span> =<\/span> BashOperator<\/span>(<\/span>\r\n    task_id<\/span>=<\/span>\"run_python\"<\/span>,<\/span> bash_command<\/span>=<\/span>'python \/tmp\/script\/airflow_on_kubernetes.py'<\/span>,<\/span> dag<\/span>=<\/span>dag<\/span>,<\/span>\r\n    executor_config<\/span>=<\/span>{<\/span>\r\n        \"KubernetesExecutor\"<\/span>:<\/span> {<\/span>\r\n            \"image\"<\/span>:<\/span> \"airflow:latest\"<\/span>,<\/span>\r\n            \"volumes\"<\/span>:<\/span> [<\/span>\r\n                {<\/span>\r\n                    \"name\"<\/span>:<\/span> \"example-kubernetes-test-volume\"<\/span>,<\/span>\r\n                    \"hostPath\"<\/span>:<\/span> {<\/span>\"path\"<\/span>:<\/span> \"\/home\/centos\/output\/\"<\/span>},<\/span>\r\n                },<\/span>\r\n            ],<\/span>\r\n            \"volume_mounts\"<\/span>:<\/span> [<\/span>\r\n                {<\/span>\r\n                    \"mountPath\"<\/span>:<\/span> \"\/tmp\/\"<\/span>,<\/span>\r\n                    \"name\"<\/span>:<\/span> \"example-kubernetes-test-volume\"<\/span>,<\/span>\r\n                },<\/span>\r\n            ]<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n)<\/span>\r\n\r\nstart_task<\/span>.<\/span>set_downstream<\/span>(<\/span>second_task<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u4e0a\u8ff0\u7684\u662fDAG\u811a\u672c\u3002\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u51fa\u73b0\u5728Airflow\u7ba1\u7406\u754c\u9762\u4e0a\u7684\u540d\u79f0\u662f\u6307\u7684dag_id\uff08\u800c\u975e\u811a\u672c\u540d\uff09\u3002<\/p>\n
\u91cd\u70b9\u5728\u4e8evolumes\u548cvolume_mounts\u7684\u8bbe\u7f6e\u3002
\n\u901a\u8fc7volumes\u7684hostPath\u8bbe\u7f6e\u8981\u6302\u8f7d\u7684\u4e3b\u673a\u8def\u5f84\u3002\u901a\u8fc7volume_mounts\u7684mountPath\u6307\u5b9a\u5bb9\u5668\u4e2d\u7684\u8def\u5f84\u3002<\/p>\n
\u63d0\u524d\u5c06airflow_on_kubernetes.py\u6587\u4ef6\u653e\u7f6e\u5728\u6240\u6709\u4e3b\u673a(worker\u8282\u70b9)\u7684\/home\/centos\/output\u76ee\u5f55\u4e2d\u3002<\/p>\n
# coding:utf-8\r\n<\/span>import<\/span> sqlalchemy<\/span>\r\nfrom<\/span> sqlalchemy<\/span> import<\/span> *<\/span>\r\nfrom<\/span> sqlalchemy.orm<\/span> import<\/span> *<\/span>\r\nfrom<\/span> sqlalchemy.ext.declarative<\/span> import<\/span> declarative_base<\/span>\r\nfrom<\/span> logip<\/span> import<\/span> *<\/span>\r\nfrom<\/span> setting2<\/span> import<\/span> session<\/span> as<\/span> se2<\/span>\r\n\r\nif<\/span> __name__<\/span>==<\/span>'__main__'<\/span>:<\/span>\r\n    with<\/span> open<\/span>(<\/span>'\/tmp\/db.txt'<\/span>,<\/span> 'w'<\/span>)<\/span> as<\/span> f<\/span>:<\/span>\r\n        for<\/span> record<\/span> in<\/span> se2<\/span>.<\/span>query<\/span>(<\/span>LogIP<\/span>).<\/span>all<\/span>():<\/span>\r\n            f<\/span>.<\/span>write<\/span>(<\/span>record<\/span>.<\/span>ip<\/span>)<\/span>\r\n            f<\/span>.<\/span>write<\/span>(<\/span>'<\/span>\\n<\/span>'<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u5728\u811a\u672c\u4e2d\uff0c\u5c06\u6587\u4ef6\u4fdd\u5b58\u5728\/tmp\/db.txt\u4e2d\u3002<\/p>\n
\u5f53\u6267\u884c\u8fd9\u4e2a\u547d\u4ee4\u65f6\uff0c\u4f1a\u5728\/home\/centos\/output\/\u76ee\u5f55\u4e0b\u751f\u6210db.txt\u6587\u4ef6\uff0c\u8fd9\u8bc1\u660e\u5bb9\u5668\u5df2\u7ecf\u6210\u529f\u6302\u8f7d\u5230\u4e3b\u673a\u4e0a\u4e86\u3002(\u8bf7\u6309\u7167\u9700\u8981\u5c06”sqlalchemy”\u90e8\u5206\u8fdb\u884c\u76f8\u5e94\u4fee\u6539)\u53e6\u5916\uff0c\u8fd8\u53ef\u4ee5\u786e\u8ba4\u5bb9\u5668\u53ef\u4ee5\u8bbf\u95ee\u4f4d\u4e8e\u5176\u4ed6\u670d\u52a1\u5668\u4e0a\u7684\u6570\u636e\u5e93\u3002<\/p>\n
\u6700\u540e\u3002<\/h1>\n
\u6211\u5df2\u7ecf\u5728Kubernetes\u4e0a\u4f7f\u7528Airflow\u6267\u884c\u7684DAG\u90e8\u7f72\u5230\u4e86Kubernetes\u3002<\/p>\n
\u4e2a\u4eba\u6765\u8bf4\uff0c\u6211\u5f88\u9057\u61be\u7684\u662f\uff0c\u5982\u679cPod\u6ca1\u6709\u90e8\u7f72\uff0c\u5b83\u5c31\u65e0\u6cd5\u5728Airflow\u4e0a\u7684\u65e5\u5fd7\u4e2d\u8f93\u51fa\u3002\u4f46\u662f\uff0c\u80fd\u591f\u7701\u53bb\u7f16\u5199yaml\u6587\u4ef6\u7684\u5de5\u4f5c\u786e\u5b9e\u5f88\u65b9\u4fbf\uff0c\u6211\u8ba4\u4e3a\u8fd9\u4e00\u70b9\u5f88\u4e0d\u9519\u3002<\/p>\n
\u7531\u4e8e\u6302\u8f7d\u5bb9\u6613\uff0c\u56e0\u6b64\u5c06\u811a\u672c\u5206\u5e03\u5230\u5de5\u4f5c\u8282\u70b9\u4e0a\uff0c\u5e76\u4ecePod\u4fa7\u5f15\u7528\u548c\u6267\u884c\u8be5\u811a\u672c\u7684\u6d41\u7a0b\u65e2\u9ad8\u6548\u53c8\u53ef\u4ee5\u901a\u8fc7Airflow\u7684View\u65e5\u5fd7\u67e5\u770bPod\u4e0a\u7684\u9519\u8bef\uff0c\u8fd9\u5bf9\u4e8e\u6301\u7eed\u96c6\u6210\/\u6301\u7eed\u90e8\u7f72\u4e5f\u975e\u5e38\u6709\u7528\u3002<\/p>\n
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