Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-09-03 Thread Balázs Gibizer
On Mon, Sep 3, 2018 at 1:27 PM, Eugen Block wrote: Hi, To echo what cfriesen said, if you set your allocation ratio to 1.0, the system will not overcommit memory. Shut down instances consume memory from an inventory management perspective. If you don't want any danger of an instance

Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-09-03 Thread Eugen Block
Thanks, that is a very good explanation, I get it now. Thank you very much for your answers! Zitat von Balázs Gibizer : On Mon, Sep 3, 2018 at 1:27 PM, Eugen Block wrote: Hi, To echo what cfriesen said, if you set your allocation ratio to 1.0, the system will not overcommit memory.

Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-09-03 Thread Jay Pipes
On 09/03/2018 07:27 AM, Eugen Block wrote: Hi, To echo what cfriesen said, if you set your allocation ratio to 1.0, the system will not overcommit memory. Shut down instances consume memory from an inventory management perspective. If you don't want any danger of an instance causing an OOM,

Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-09-03 Thread Eugen Block
Hi, To echo what cfriesen said, if you set your allocation ratio to 1.0, the system will not overcommit memory. Shut down instances consume memory from an inventory management perspective. If you don't want any danger of an instance causing an OOM, you must set you ram_allocation_ratio

Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-08-30 Thread Jay Pipes
On 08/30/2018 10:54 AM, Eugen Block wrote: Hi Jay, You need to set your ram_allocation_ratio nova.CONF option to 1.0 if you're running into OOM issues. This will prevent overcommit of memory on your compute nodes. I understand that, the overcommitment works quite well most of the time. It

Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-08-30 Thread Chris Friesen
On 08/30/2018 08:54 AM, Eugen Block wrote: Hi Jay, You need to set your ram_allocation_ratio nova.CONF option to 1.0 if you're running into OOM issues. This will prevent overcommit of memory on your compute nodes. I understand that, the overcommitment works quite well most of the time. It

Re: [Openstack] [nova] Nova-scheduler: when are filters applied?

2018-08-30 Thread Eugen Block
Hi Jay, You need to set your ram_allocation_ratio nova.CONF option to 1.0 if you're running into OOM issues. This will prevent overcommit of memory on your compute nodes. I understand that, the overcommitment works quite well most of the time. It just has been an issue twice when I booted

[Openstack] [nova] Nova-scheduler: when are filters applied?

2018-08-30 Thread Eugen Block
Sorry. I was to quick with the send button... Hi *, I posted my question in [1] a week ago, but no answer yet. When does Nova apply its filters (Ram, CPU, etc.)? Of course at instance creation and (live-)migration of existing instances. But what about existing instances that have been shutdown