[jira] [Commented] (MESOS-4144) Allow for dynamic updating of --roles

["Yong Qiao Wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15055276#comment-15055276 ] 

Yong Qiao Wang commented on MESOS-4144:
---------------------------------------

Currently, Implicit Roles Epic is used to change the behavior of the master when the `--roles` flag is NOT specified. Previously, this would allow only the `*` role to be used if '--roles' is not specified. Now, omitting `--roles` means that any role can be used. This is called "implicit roles". So Implicit Roles does not be used to dynamic update --roles.

Actually, this JIRA is duplicated by MESOS-3177(Dynamic Roles/Weights). But currently, we are using Implicit Roles to support dynamic roles implicitly, and '--roles' flag will be removed in the future.


> Allow for dynamic updating of --roles
> -------------------------------------
>
>                 Key: MESOS-4144
>                 URL: https://issues.apache.org/jira/browse/MESOS-4144
>             Project: Mesos
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.25.0
>            Reporter: John Omernik
>
> Roles must be specified at master run time. If the environment changes, and more roles are needed, it requires a restart of masters. Instead, there should be a way via API to add roles or remove roles to properly authorized principles. 



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