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Apache Airflow is an open-source platform designed to programmatically author, schedule, and monitor workflows. It is widely used for orchestrating complex computational workflows and data processing pipelines. Airflow allows users to define workflows as code, ensuring that they are dynamic and can be easily maintained and scaled.
The AirflowSchedulerDiskSpaceLow alert indicates that the disk space available to the Airflow Scheduler is running low. This can lead to performance issues or even a complete halt of the scheduler if not addressed promptly.
The Airflow Scheduler is a critical component responsible for scheduling tasks and ensuring that they are executed according to the defined workflows. When the disk space is low, the scheduler may not be able to write necessary logs or manage task states effectively, leading to potential failures in task execution.
This alert is triggered when the available disk space falls below a predefined threshold, which is typically set to ensure that there is enough space for the scheduler to operate smoothly. Monitoring disk space is crucial to prevent disruptions in workflow execution.
First, identify which directories or files are consuming the most disk space. You can use the following command to check disk usage:
du -sh /* | sort -h
This command will display the disk usage of directories in a human-readable format, sorted by size.
Once you have identified the large files or directories, consider deleting unnecessary files or archiving old logs. For example, you can remove old log files using:
find /path/to/logs -type f -name '*.log' -mtime +30 -exec rm {} \;
This command deletes log files older than 30 days.
If freeing up space is not sufficient, consider increasing the disk capacity. This might involve resizing the disk if you are using a cloud provider or adding additional storage if you are on-premises. Consult your infrastructure provider's documentation for specific instructions.
Implement regular monitoring of disk space to prevent future occurrences. Tools like Prometheus can be configured to alert you when disk space is running low, allowing you to take proactive measures.
Addressing the AirflowSchedulerDiskSpaceLow alert is crucial for maintaining the smooth operation of your workflows. By regularly monitoring disk usage and taking timely actions to free up or expand disk space, you can ensure that your Airflow Scheduler continues to function effectively.
For more information on managing Airflow, visit the official Apache Airflow documentation.
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(Perfect for DevOps & SREs)