t5 = SSHOperator(ĭocker Operator helps to execute commands inside a docker container. SSHOperator is used to execute commands on a given remote host using the ssh_hook. Start_date=datetime.datetime(2021, 10, as dag: It will be used to create tables, remove records, insert records, and more. The Postgres Operator interface defines tasks that interact with the PostgreSQL database. The biggest drawback is that this operator isn't very customizable. With Email Operator, you can send task-related emails or build up an alerting system. def print_string():Īpache Airflow Email Operator - Sends an emailĮmailOperator is the most straightforward method for sending emails from airflow. The Airflow PythonOperator provides a basic yet effective operator that lets you run a Python callable function from your DAG. t1 = BashOperator(Īpache Airflow Python Operator - Calls an arbitrary python function This is the operator you'll want to use to specify the job if your DAG performs a bash command or script. Let's have a look at some of the most popular operators:Īpache Airflow Bash Operator - Executes a bash commandīashOperator in Apache Airflow provides a simple method to run bash commands in your workflow. Generally, operators() produce that are transformed into tasks.ĭefining Relations between Tasks t01 > t02 When you run an operator class object, it becomes a task. Tasks are ideally self-contained and do not rely on information from other tasks. The images depict the relationships between the DAG, Tasks, and Operators. The figure below might help you understand the relation between DAG, Task, and Operator. The differences between a task and an operator might be confusing at first. We'll go through a few of the most popular operators later, but first, let's look at the relationship between a task and an operator. Operators play a crucial role in the airflow process.
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