Category: Application Integration
Service: Amazon Managed Workflows for Apache Airflow (MWAA)
Answer:
An MWAA environment consists of several components that work together to manage and execute workflows. These components include:
Airflow Web Server: The Airflow Web Server is a web-based interface for managing workflows. It provides a dashboard for visualizing workflows, scheduling and monitoring workflows, and managing connections to external systems.
Airflow Scheduler: The Airflow Scheduler is responsible for scheduling and executing workflows. It creates and manages the task instances of workflows and ensures that they run on time.
Airflow Workers: Airflow Workers are responsible for executing the tasks of workflows. They receive the task instances from the Scheduler and execute them on the designated compute resources.
Database: The database stores the metadata related to workflows, such as DAGs (Directed Acyclic Graphs), tasks, and task instances. The database is used by the Airflow Web Server and Scheduler to manage workflows and maintain their states.
Amazon S3: Amazon S3 is used to store the data inputs and outputs of workflows. MWAA uses S3 to store logs generated by Airflow components and DAG runs, as well as any files uploaded as part of a workflow.
Amazon CloudWatch Logs: Amazon CloudWatch Logs is used to store and manage the logs generated by Airflow components and DAG runs. MWAA uses CloudWatch Logs to store logs for easy troubleshooting and debugging of workflows.
Amazon VPC: Amazon Virtual Private Cloud (VPC) provides a secure and isolated network environment for MWAA. MWAA creates a VPC for each environment, which can be used to securely connect to other AWS services and on-premises resources.
Together, these components work to manage and execute workflows in an MWAA environment. The Airflow Web Server and Scheduler manage workflows, while Airflow Workers execute tasks in a distributed manner. The database stores the metadata related to workflows, while Amazon S3 and CloudWatch Logs store the input/output data and logs generated by the workflows. Finally, Amazon VPC provides a secure network environment for the MWAA environment.
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