title: How to set request_cpu globally for airflow worker pods using the kubernetes executor?
body: <p>I'm trying to set the <code>request_cpu</code> parameter in the Kubernetes executor for Airflow but haven't been able to find where I can do that. In the <a href="https://github.com/apache/airflow/blob/master/airflow/config_templates/default_airflow.cfg" rel="nofollow noreferrer">default airflow config</a> I found <code>default_cpus</code> but according to <a href="https://stackoverflow.com/a/48223083/6733371">this answer</a> there is nowhere that that is used, and nowhere else in the Kubernetes section could I find a reference to the CPU request. </p>
  
  <p>How can I set the <code>request_cpu</code> parameter in the Airflow Kubernetes executor?</p>
  
  <p>EDIT: 
  Ideally, what I would like to be able to do is set this as a global default rather than on a per-operator basis, even though in general I think that it does make more sense to set it per-operator/task</p>