Pod fails to run when task or dag name contains non ASCII characters (k8s executor)

Apache Airflow version: 2.0.1

Kubernetes version (if you are using kubernetes) (use kubectl version): 1.20.5

Environment:

• Cloud provider or hardware configuration: Azure AKS

What happened:

When task or dag name is defined with a non ascii character, pod creations fails with a kubernetes.client.rest.ApiException: (422) (task maintains scheduled status) this is because the hostname defined for the pod is based on dag and task name…

What you expected to happen:

Create the pod and run the task

How to reproduce it: Run a task with name “campaña” on K8s executor,

Error log

{"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"Pod \"dagnamecampaña.0fb696e661e347968216df454b41b56f\" is invalid: metadata.name: Invalid value: \"dagnamecampaña.0fb696e661e347968216df454b41b56f\": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0
-9])?(\\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')","reason":"Invalid"

[potiuk]

@flolas -> I think sanitization of the name and converting it to ASCII -only is a great idea. Would you maybe want to submit a PR for that ? That would be great contribution to the project 😃

[potiuk]

cool!