defunct sh and sleep processes when running on slave-jnlp about docker-agent HOT 6 CLOSED

Likely it is a Pipeline issue, not the container one. Would you be able to try it on a similar environment without containers?

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This could happen if the Java process dies abruptly without reaping children

from docker-agent.

I was not able to reproduce this using a jnlp connected agent running on a ubuntu vm.

The java process did not die in any instance. I guess that is why the master is being started with /bin/tini so that java does not use process id 1.

I will try to create an image where java is not running as PID1 and retry the test.

from docker-agent.

when running the jenkins/jnlp-slave:latest container interactively with bash and then running java does not result in defunct processes, so adding another process should solve it.

jenkinsci/docker#54

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with tini as PID 1 I am not getting defunct processes, solved that in my image.

ENV TINI_VERSION v0.16.1
RUN wget -O /tini https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini \
    && wget -O /tini.asc https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini.asc \
    && gpg --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 595E85A6B1B4779EA4DAAEC70B588DFF0527A9B7 \
    && gpg --verify /tini.asc \
    && rm /tini.asc \
    && chmod 755 /tini

USER jenkins

ENTRYPOINT ["/tini", "--", "/docker-entrypoint.sh"]

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Closing as the PR were refused (and the defunct process are not reproducible anymore)

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