[jira] [Assigned] (MESOS-2080) Add master metrics for maintenance.

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

     [ https://issues.apache.org/jira/browse/MESOS-2080?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yong Qiao Wang reassigned MESOS-2080:
-------------------------------------

    Assignee: Yong Qiao Wang

> Add master metrics for maintenance.
> -----------------------------------
>
>                 Key: MESOS-2080
>                 URL: https://issues.apache.org/jira/browse/MESOS-2080
>             Project: Mesos
>          Issue Type: Task
>          Components: master
>            Reporter: Benjamin Mahler
>            Assignee: Yong Qiao Wang
>              Labels: mesosphere, twitter
>
> We'll need metrics in order to gain visibility into the maintenance functionality. This will also allow operators to add alerting on these metrics, in particular:
> # Number of scheduled hosts.
> # Number of active windows.
> # Number of expired windows.
> # Number of successful drains.
> # Number of failed drains.
> As an example of an alert guideline, we would want to know the number of expired windows as a gauge to ensure that it is not growing excessively. This allows alerting to catch when operators are not properly unscheduling maintenance once it is complete.



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