[jira] [Created] (MESOS-6156) Make the `network/cni` isolator nesting aware

["Avinash Sridharan (JIRA)" <ji...@apache.org>]

Avinash Sridharan created MESOS-6156:
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             Summary: Make the `network/cni` isolator nesting aware
                 Key: MESOS-6156
                 URL: https://issues.apache.org/jira/browse/MESOS-6156
             Project: Mesos
          Issue Type: Task
          Components: containerization
    Affects Versions: 1.1.0
            Reporter: Avinash Sridharan
            Assignee: Avinash Sridharan
             Fix For: 1.1.0


In pods, child containers share the network and UTS namespace with the parent containers. This implies that during `prepare` and `isolate` the `network/cni` isolator needs to be aware the parent-child relationship between containers to make the following decisions:
a) During `prepare` a container should be allocated a new network namespace and UTS namespace only if the container is a top level container.
b) During `isolate` the network files (/etc/hosts, /etc/hostname, /etc/resolv.conf) should be created only for top level containers. The network files for child containers will just be symlinks to the parent containers network files.



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