FAQ
===

How Long Will the History Data be Stored?
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By default, the execution history data is retained for 30 days. However, you can customize this setting by modifying the `histRetentionDays` field in a YAML file.

How to Use Specific Host and Port or `blackdagger server`?
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To configure the host and port for `blackdagger server`, you can set the environment variables `BLACKDAGGER_HOST` and `BLACKDAGGER_PORT`. Refer to the :ref:`Configuration Options` for more details.

How to Specify the DAGs Directory for `blackdagger server` and `blackdagger scheduler`?
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You can customize the directory used to store DAG files by setting the environment variable `BLACKDAGGER_DAGS`. See :ref:`Configuration Options` for more information.

How Can I Retry a DAG from a Specific Task?
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If you want to retry a DAG from a specific task, you can set the status of that task to `failed` by clicking the step in the Web UI. When you rerun the DAG, it will execute the failed task and any subsequent tasks.

How Does It Track Running Processes Without DBMS?
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`blackdagger` uses Unix sockets to communicate with running processes.