Bruce Merry created MESOS-7156:
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Summary: Docker containerizer ignores capability requests
Key: MESOS-7156
URL: https://issues.apache.org/jira/browse/MESOS-7156
Project: Mesos
Issue Type: Bug
Components: containerization, documentation
Affects Versions: 1.1.0
Environment: Ubuntu 16.04
Reporter: Bruce Merry
Priority: Minor
I'm trying to set a capability (SYS_NICE) by populating the
linux_info.capability_info.capabilities field in a ContainerInfo, while using
the Docker containerizer. I was expecting this to turn into a `--cap-add`
argument passed to Docker, but in fact nothing happens. I also grepped the
source of Mesos HEAD and there doesn't seem to be any code to pass --cap-add.
Maybe this is intended, but I couldn't find anything to indicate this in the
documentation or in mesos.proto, and the placement of linux_info in
ContainerInfo rather than in MesosInfo led me to expect that it would be
supported independently of the containerizer.
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