[MESOS-5668] Add CGROUP namespace to linux ns helper.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: containerization
• Labels: cgroups linux mesosphere namespace

Environment

Ubuntu 16 with/without SSL

• Epic Link: flaky
• Sprint: Mesosphere Sprint 37
• Story Points: 3
• Assignee: Gilbert Song
• Reporter: Gilbert Song
• Created: 21/Jun/16 01:23
• Updated: 06/Jul/18 21:27
• Resolved: 22/Jun/16 23:04

Description

Since linux kernel 4.6, CGROUP namespace is added. we need to support the handle for the cgroup namespace of the process.

This also relates to two test failures on Ubuntu 16:

[22:41:26] :	 [Step 10/10] [ RUN      ] NsTest.ROOT_setns
[22:41:26] :	 [Step 10/10] ../../src/tests/containerizer/ns_tests.cpp:75: Failure
[22:41:26] :	 [Step 10/10] nstype: Unknown namespace 'cgroup'
[22:41:26] :	 [Step 10/10] [  FAILED  ] NsTest.ROOT_setns (1 ms)

[22:41:26] :	 [Step 10/10] [ RUN      ] NsTest.ROOT_getns
[22:41:26] :	 [Step 10/10] ../../src/tests/containerizer/ns_tests.cpp:160: Failure
[22:41:26] :	 [Step 10/10] nstype: Unknown namespace 'cgroup'
[22:41:26] :	 [Step 10/10] [  FAILED  ] NsTest.ROOT_getns (0 ms)

Issue Links

• is related to: MESOS-5446 NsTest.ROOT_setns and NsTest.ROOT_getns failed in Linux 4.6
• is related to: MESOS-5410 Support cgroup namespace in unified container