Allowed Pod disruptions

You can configure the permitted Pod disruptions for Airflow nodes as described in Allowed Pod disruptions.

Unless you configure something else or disable the default PodDisruptionBudgets (PDBs), the operator writes the following PDBs:

Schedulers

Allow only a single scheduler to be offline at any given time, regardless of the number of replicas or roleGroups.

Webservers

Allow only a single webserver to be offline at any given time, regardless of the number of replicas or roleGroups.

Executors

In the case of Celery executors, allow only a single executor to be offline at any given time, regardless of the number of replicas or roleGroups.
In the case of Kubernetes executors, don’t deploy any PDB, as it’s Airflows responsibility to take care of the executor Pods.

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