@Marvin Is there any way for the adding more details in the Notification which sent from prefect when any flow fails ? I need to add the server details on which the flow failed.

You can customize the notification sent from Prefect when any flow fails by using State Change Hooks. These hooks allow you to execute code in response to changes in flow or task run states, enabling you to define actions for specific state transitions in your workflow. This customization can include adding server details or any other relevant information. Here's a sample code snippet demonstrating how to send a custom Slack notification when a flow run fails:

python
from prefect import flow
from prefect.blocks.core import Block
from prefect.settings import PREFECT_API_URL

def notify_slack(flow, flow_run, state):
    slack_webhook_block = Block.load("slack-webhook/my-slack-webhook")
    slack_webhook_block.notify(
        (
            f"Your job {flow_run.name} entered {state.name} "
            f"with message:\n\n"
            f"See <https://{PREFECT_API_URL.value()}/flow-runs/"
            f"flow-run/{flow_run.id}|the flow run in the UI>\n\n"
            f"Tags: {flow_run.tags}\n\n"
            f"Scheduled start: {flow_run.expected_start_time}"
        )
    )

@flow(on_failure=[notify_slack], retries=1)
def failing_flow():
    raise ValueError("oops!")

if __name__ == "__main__":
    failing_flow()

To ensure that server details are included, modify the

notify_slack

function to add the server-specific information you need. For more information, please refer to the relevant Prefect documentation: - https://docs.prefect.io/latest/guides/state-change-hooks/ - https://docs.prefect.io/latest/guides/host/ To see further customization examples and discussions, you can check out this issue on GitHub: - https://github.com/PrefectHQ/prefect/issues/4198