The problem of executing DAG's and getting logs after migration to 3.1.8 #63945

Apache Airflow version

3.1.8

If "Other Airflow 3 version" selected, which one?

No response

What happened?

Hello dear friends!
Today I updated Airflow from 3.1.5 to 3.1.8. The "airflow db migrate" were also performed in our k8s. After that, launching DAG's and reading logs was no longer possible.

The container logs contain errors like:
"httpcore.ConnectError: [Errno -2] Name or service not known"

In the UI, I see this:
Log message source details sources=["Could not read served logs: Invalid URL 'http://:8793/log/dag_id=test_dag_check/run_id=scheduled__2026-03-19T07:35:00+00:00/task_id=send_command/attempt=1.log' : No host supplied"]

It seems that he stopped receiving "hostname" after this update.

I also tried to specify it in airflow.cfg:

[core]
hostname_callable = airflow.utils.net.get_host_ip_address

But the problem repeats.

I'm sorry, that's all I can point out at the moment.

Maybe someone has encountered the same thing?

And an additional question, can I do:
airflow db downgrade --to-version 3.1.5 so that I can return to the working version 3.1.5?

Thank you for helping!

What you think should happen instead?

DAG's must be executed, logs must be visible

How to reproduce

1. Update the airflow package from 3.1.5 to 3.1.8 in the Dockerfile
2. Launch the init container with "airflow db migrate"
3. Try to run the DAG

Operating System

ubuntu:22.04

Versions of Apache Airflow Providers

I use several packages from https://raw.githubusercontent.com/apache/airflow/constraints-3.1.8/constraints-3.10.txt

Deployment

Other Docker-based deployment

Deployment details

helm,k8s

Anything else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct