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https://issues.apache.org/jira/browse/MESOS-5893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400705#comment-15400705
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Stéphane Cottin commented on MESOS-5893:
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Good guess, I can't reproduce without the namespaces/pid isolator.
> mesos-executor terminated forked children turn to zombies
> ---------------------------------------------------------
>
> Key: MESOS-5893
> URL: https://issues.apache.org/jira/browse/MESOS-5893
> Project: Mesos
> Issue Type: Bug
> Components: containerization
> Affects Versions: 1.1.0
> Environment: mesos compiled from git master ( 1.1.0 )
> {{../configure --enable-ssl --enable-libevent --prefix=/usr --enable-optimize
> --enable-silent-rules --enable-xfs-disk-isolator}}
> isolators :
> {{namespaces/pid,cgroups/cpu,cgroups/mem,filesystem/linux,docker/runtime,network/cni,docker/volume}}
> Reporter: Stéphane Cottin
> Labels: containerizer
>
> mesos containerizer does not properly handle children death.
> discovered using marathon-lb, each topology update fork another haproxy, the
> old haproxy process should properly die after its last client connection is
> terminated, but turn into a zombie.
> {noformat}
> 7716 ? Ssl 0:00 | \_ mesos-executor
> --launcher_dir=/usr/libexec/mesos --sandbox_directory=/mnt/mesos/sandbox
> --user=root --working_directory=/marathon-lb
> --rootfs=/mnt/mesos/provisioner/containers/3b381d5c-7490-4dcd-ab4b-81051226075a/backends/overlay/rootfses/a4beacac-2d7e-445b-80c8-a9b4e480c491
> 7813 ? Ss 0:00 | | \_ sh -c /marathon-lb/run sse
> --marathon https://marathon:8443 --auth-credentials user:pass --group
> 'external' --ssl-certs /certs --max-serv-port-ip-per-task 20050
> 7823 ? S 0:00 | | | \_ /bin/bash /marathon-lb/run sse
> --marathon https://marathon:8443 --auth-credentials user:pass --group
> external --ssl-certs /certs --max-serv-port-ip-per-task 20050
> 7827 ? S 0:00 | | | \_ /usr/bin/runsv
> /marathon-lb/service/haproxy
> 7829 ? S 0:00 | | | | \_ /bin/bash ./run
> 8879 ? S 0:00 | | | | \_ sleep 0.5
> 7828 ? Sl 0:00 | | | \_ python3
> /marathon-lb/marathon_lb.py --syslog-socket /dev/null --haproxy-config
> /marathon-lb/haproxy.cfg --ssl-certs /certs --command sv reload
> /marathon-lb/service/haproxy --sse --marathon https://marathon:8443
> --auth-credentials user:pass --group external --max-serv-port-ip-per-task
> 20050
> 7906 ? Zs 0:00 | | \_ [haproxy] <defunct>
> 8628 ? Zs 0:00 | | \_ [haproxy] <defunct>
> 8722 ? Ss 0:00 | | \_ haproxy -p /tmp/haproxy.pid -f
> /marathon-lb/haproxy.cfg -D -sf 144 52
> {noformat}
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