check-rule-exists.sh

> aws events describe-rule --name "airflow-start-scheduler-service" --profile test
{
    "Name": "airflow-start-scheduler-service",
    "Arn": "arn:aws:events:<region>:<accountid>:rule/airflow-start-scheduler-service",
    "ScheduleExpression": "cron(0/5 * * * ? *)",
    "State": "ENABLED",
    "Description": "runs 'airflow scheduler --run-duration 300' on airflow server every 300 seconds to ensure scheduler is always running"
}