Error when running dtnd -h command on docker instance

[ghost]

root@102d85e79c4b:~# dtnd -h

dtnd: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by dtnd)

dtnd: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by dtnd

dtnd: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by dtnd)

[gh0st42]

which base image did you use? for debian and ubuntu the provided gnu binaries should work, on alpine the musl version might be a better fit.

can you provide a docker file to reproduce the issue?

building dtnd by hand should always give a working binary on any system.

the prebuild binaries for amd64 GNU platforms are built on ubuntu 18.04. to avoid glibc issue you could try the musl version, e.g., https://github.com/dtn7/dtn7-rs/releases/download/v0.18.0/dtn7-0.18.0-x86_64-unknown-linux-musl.tar.gz

[ghost]

which base image did you use? for debian and ubuntu the provided gnu binaries should work, on alpine the musl version might be a better fit.

can you provide a docker file to reproduce the issue?

building dtnd by hand should always give a working binary on any system.

the prebuild binaries for amd64 GNU platforms are built on ubuntu 18.04. to avoid glibc issue you could try the musl version, e.g., https://github.com/dtn7/dtn7-rs/releases/download/v0.18.0/dtn7-0.18.0-x86_64-unknown-linux-musl.tar.gz

I am using Ubuntu 22.04. How can I provide you the docker file?

[gh0st42]

You can post a minimal Dockerfile using code markdown here to reproduce the problem.

have you tried the musl build for x64 or building from source in the Dockerfile? This should definitely work.

[gh0st42]

The binary releases work perfectly fine on Ubuntu 20.04 and 22.04 in Docker:

FROM ubuntu:22.04

WORKDIR /root
RUN apt-get update && \
  apt-get install -y wget && \
  wget https://github.com/dtn7/dtn7-rs/releases/download/v0.18.0/dtn7-0.18.0-x86_64-unknown-linux-gnu.tar.gz && \
  tar xvf dtn7* && \
  rm -rf /var/lib/apt/lists/*

CMD ["/root/dtn7-0.18.0/bin/dtnd", "-h"]

As the above sample works and the alternatives such as the musl binaries or building from source also work reliably in Dockerfiles, I will close the issue for now.

[ghost]

I have not tried musl build for x64. Where can I find the instructions for building it using the musl build. I have been following your getting started guide: https://github.com/dtn7/dtn7-rs/blob/master/doc/getting-started.md. What do you mean by building the source in the Dockerfile?

[gh0st42]

Instead of performing the build step from the getting started guide, you can also just download a release from the github homepage and copy the needed binaries to /tmp/shared and continue with the other instructions.

[ghost]

Instead of performing the build step from the getting started guide, you can also just download a release from the github homepage and copy the needed binaries to /tmp/shared and continue with the other instructions.

Thank you, it is working now.