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Re: quota question



Thanks Vikas. That answer my question …

 

 

 

-- 

Srinivas Kotaru

From: Vikas Choudhary <vichoudh redhat com>
Date: Wednesday, April 4, 2018 at 5:28 PM
To: Srinivas Naga Kotaru <skotaru cisco com>
Cc: dev <dev lists openshift redhat com>
Subject: Re: quota question

 

 

 

On Thu, Apr 5, 2018 at 5:44 AM, Srinivas Naga Kotaru (skotaru) <skotaru cisco com> wrote:

Want to validate a statement.

 

Just assume, we have a only one node with 60 GB memory. Pod A scheduled with request of 10 GB and no limit. After some time, it start using 55 GB ( ignore systems reserves for now). system now has only left with 5 GB free. If new podB scheduled with request of 10GB, what is systems behavior?

 

  • Will it place Pod A and evict PodB softly since it can’t accommodate both pods on same node?

 Kubelet should evict pod A because it is using a higher % of memory than it requested.

  •  
  • Scheduling fail to pod B since it can’t accommodate since node doesn’t enough requested memory?

No, scheduling should not fail. Scheduler knows only requests and from requests angle scheduler is fine. 

  •  

 

 

 

 

 

-- 

Srinivas Kotaru


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