omacchioni opened a new issue, #71357:
URL: https://github.com/apache/airflow/issues/71357
### Under which category would you file this issue?
Airflow Core
### Apache Airflow version
3.3.0
### What happened and how to reproduce it?
Running Airflow within Docker version `29.3.1` (docker compose).
All my DAGs run perfectly well, and after some point they start massively
failing with the following log in the GUI:
```
▶Log message source details
Could not read served logs: Hostname not available for worker. Please check
your `hostname_callable` configuration.
```
Restating the Docker host and clearing the failed tasks sometimes fixes the
errors, but not always.
Running the following query shows me an empty (and not NULL) hostname:
```
SELECT
hostname
FROM task_instance
WHERE dag_id = 'xx'
AND task_id = 'xx'
AND run_id = 'scheduled__2026-08-10T05:58:00+00:00';
```
Maybe this is relevant in the configuration:
```
hostname_callable = airflow.utils.net.getfqdn
executor = LocalExecutor
```
### What you think should happen instead?
I should be able to access the logfiles - and actually the dags should run
without any issue.
### Operating System
Docker host: Debian GNU/Linux 13 (trixie), container: Alpine Linux 3.22.5
### Deployment
Docker-Compose
### Apache Airflow Provider(s)
_No response_
### Versions of Apache Airflow Providers
apache-airflow-providers-apache-kafka==1.14.0
apache-airflow-providers-common-compat==1.15.0
apache-airflow-providers-common-io==1.8.0
apache-airflow-providers-common-sql==2.0.1
apache-airflow-providers-fab==3.7.1
apache-airflow-providers-mysql==6.6.1
apache-airflow-providers-postgres==6.8.0
apache-airflow-providers-smtp==3.0.1
apache-airflow-providers-ssh==5.0.3
apache-airflow-providers-standard==1.15.0
### Official Helm Chart version
Not Applicable
### Kubernetes Version
_No response_
### Helm Chart configuration
_No response_
### Docker Image customizations
ARG PYTHON_VERSION=3.10.18
FROM python:${PYTHON_VERSION}-alpine AS builder
ARG ALPINE_VERSION=3.22
# Setup proxy - which we don't have for this Docker instance
RUN \
echo "https://XXXX/repository/alpine-proxy/v${ALPINE_VERSION}/main/"; >
/etc/apk/repositories && \
echo
"https://XXXX/repository/alpine-proxy/v${ALPINE_VERSION}/community/"; >>
/etc/apk/repositories
COPY pip.conf pip.conf
ENV WORKDIR=/srv/airflow
# UV options
ENV UV_COMPILE_BYTECODE=1
ENV UV_CONCURRENT_DOWNLOADS=4
ENV UV_PYTHON=$PYTHON_VERSION
WORKDIR $WORKDIR
# Upgrade Alpine and base packages
RUN apk --no-cache --update-cache --available upgrade
RUN apk add --no-cache --update-cache gcc libpq-dev python3-dev build-base
cmake librdkafka-dev libffi-dev py3-pybind11-dev abseil-cpp-dev openldap-dev \
re2-dev mariadb-dev && rm -rf /var/cache/apk/*
# Compile ccrypt for matrix decryption
ENV CCRYPT=ccrypt-1.11
COPY src/$CCRYPT.tar.gz /tmp
RUN cd /tmp && tar zxvf $CCRYPT.tar.gz && cd $CCRYPT && ./configure
--prefix=/srv/bin && make && make install
# We put this here... so if requirements.txt doesn't change, this step and
the next RUN are not actually ran, they're taken from the cache
COPY requirements.txt .
RUN pip install uv && uv venv /srv/venv && . /srv/venv/bin/activate && uv
pip install -r requirements.txt && uv cache clean
RUN apk del gcc libpq-dev python3-dev build-base cmake librdkafka-dev
libffi-dev py3-pybind11-dev abseil-cpp-dev mariadb-dev
# Second stage - production
FROM python:${PYTHON_VERSION}-alpine AS final
ENV WORKDIR=/srv/airflow
RUN mkdir -p "$WORKDIR" "$WORKDIR/dags" "$WORKDIR/plugins" "$WORKDIR/logs"
"$WORKDIR/logs/scheduler"
RUN apk --no-cache --update-cache --available upgrade
RUN apk add --no-cache --update-cache libpq librdkafka libffi py3-pybind11
abseil-cpp postgresql-client re2 tzdata bash gpg gpg-agent pkgconf mariadb-dev
libldap curl && rm -rf /var/cache/apk/*
COPY --from=builder /srv/venv /srv/venv
COPY --from=builder /srv/bin /srv/bin
COPY --from=builder /etc/apk/repositories /etc/apk/repositories
COPY . $WORKDIR
ENV PYTHONUNBUFFERED=1
COPY airflow.cfg webserver_config.py dags/ "$WORKDIR"
ENV PYTHONUNBUFFERED=1
ENV PATH="/srv/venv/bin:$PATH"
ENV AIRFLOW_HOME=/srv/airflow
CMD ["/bin/sh"]
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [x] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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