[MESOS-6344] Allow `network/cni` isolator to take a search path for CNI plugins instead of single directory

• Type: Task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.1.0
• Component/s: containerization
• Labels: mesosphere
• Target Version/s: 1.1.0
• Epic Link: CNI port-mapper plugin
• Sprint: Mesosphere Sprint 44
• Story Points: 1
• Assignee: Avinash Sridharan
• Reporter: Avinash Sridharan
• Shepherd: Jie Yu
• Created: 08/Oct/16 04:30
• Updated: 14/Oct/16 17:03
• Resolved: 14/Oct/16 17:03

Description

Currently the `network/cni` isolator expects a single directory with the `--network_cni_plugins_dir` . This is very limiting because this forces the operator to put all the CNI plugins in the same directory.

With Mesos port-mapper CNI plugin this would also imply that the operator would have to move this plugin from the Mesos installation directory to a directory specified in the `--network_cni_plugins_dir`.

To simplify the operators experience it would make sense for the `--network_cni_plugins_dir` flag to take in set of directories instead of single directory. The `network/cni` isolator can then search this set of directories to find the CNI plugin.