UnknownHostException: : Name or service not known on glibc 11.0.2 image

[Ivanbmstu]

I have spring boot application with logback.groovy as logging configuration.

Launching application on alpine musl 11.0.2 image everything works well.
But launching same app throws exception on start while using glibc 11.0.2 image.
Am i using wrong glibc alpine image or something wrong with image itself?

repo to reproduce https://github.com/Ivanbmstu/bellsoft_glibc_alpine_error.git
run glibc-alpine-build.sh to build glibc docker image with app
run musl-alpine-build.sh to build musl docker image with app

with glibc check: docker run -p 8080:8080 alpine-sb2-logback-glibc java -jar /app.jar --logging.config=/logback.groovy
with musl check: docker run -p 8080:8080 alpine-sb2-logback-musl java -jar /app.jar --logging.config=/logback.groovy

exception in attachment

exception.txt

It is also possible to call endpoint inside application (e.g. curl localhost:8080/), it call InetAddress addr = InetAddress.getLocalHost(); which throws java.net.UnknownHostException.

PS. вам на русском issue писать можно?)

[den1ska]

Thank you for the bug report. I identified the issue and am working on it.

[den1ska]

For now I could offer you a simple workaround, run the following command from the console:

echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' > /etc/nsswitch.conf

If you build images yourself, this should work as well, just add

RUN echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' > /etc/nsswitch.conf

into your Dockerfile.

Later we will provide new images and Dockerfiles addressing this issue. Thank you.

[Ivanbmstu]

Thanks a lot for fast response. I think we will wait for your new images :)
How much time approximately will it take?

[den1ska]

Aiming to finish testing and roll out the updated images tomorrow.

[den1ska]

Fixed by f48c638 854e67f. Alpine images are up-to-date.