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https://issues.apache.org/jira/browse/MESOS-2554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14514548#comment-14514548
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haosdent commented on MESOS-2554:
---------------------------------
Hi, [~jieyu] I am not clear about this. I think this code snippet in
Slave::initialize() could make sure that "slave_subsystems" are exists.
{code}
// Ensure the subsystem is mounted and the Mesos root cgroup is
// present.
Try<string> hierarchy = cgroups::prepare(
flags.cgroups_hierarchy,
subsystem,
flags.cgroups_root);
if (hierarchy.isError()) {
EXIT(1) << "Failed to prepare cgroup " << flags.cgroups_root
<< " for subsystem " << subsystem
<< ": " << hierarchy.error();
}
{code}
> Slave flaps when using --slave_subsystems that are not used for isolation.
> --------------------------------------------------------------------------
>
> Key: MESOS-2554
> URL: https://issues.apache.org/jira/browse/MESOS-2554
> Project: Mesos
> Issue Type: Bug
> Affects Versions: 0.21.0, 0.21.1, 0.22.0
> Reporter: Jie Yu
> Priority: Critical
>
> Say one use --slave_subsystems=cpuacct
> However, if he/she does not use cpuacct cgroup for isolation, all processes
> forked by the slave (e.g., tasks) will be part of the slave cgroup. This is
> not expected. ALso, more importantly, this will cause the slave to flap when
> restart because there are task processes in slave's cgroup.
> We should add a check during slave startup at least!
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