csp33 commented on issue #36326:
URL: https://github.com/apache/airflow/issues/36326#issuecomment-1865889922
To make hostname match the pod name, I'm currently using this workaround:
1. Create the following file. Name it `airflow_hostname.py`
```python
import os
# This workaround is necessary until
https://github.com/apache/airflow/issues/36326 is solved
def get_hostname() -> str:
return os.environ["POD_NAME"]
```
2. In your Dockerfile, add the following instructions. Replace `python3.11`
by the Python version you're using.
```dockerfile
# Workaround until https://github.com/apache/airflow/issues/36326 is solved
COPY airflow_hostname.py
/home/airflow/.local/lib/python3.11/site-packages/airflow-hostname/airflow_hostname.py
```
3. Add the following code to `values.yaml`
```yaml
extraEnv: |
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
config:
core:
hostname_callable: airflow-hostname.airflow_hostname.get_hostname #
Workaround until https://github.com/apache/airflow/issues/36326 is solved
```
By applying these changes, we're bypassing the hostname size limit by
injecting the `POD_NAME` into an environment variable.
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