[Openstack] [Nova] Question about multi-scheduler
Hi all, Is there anyone has used the multi-scheduler property, is there any problem? Can we use this property into production environment? Thanks! 2013-02-19 Wangpan___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Nova] Question about multi-scheduler
Multi-scheduler was there for the days when Nova has to deal with both request for instance and volume. If you are using a version of Nova which still has nova-volume, I think multi-scheduler is a must. And there are two sub config option for Nova: http://docs.openstack.org/folsom/openstack-compute/admin/content/ch_scheduling.html scheduler_driver=nova.scheduler.multi.MultiScheduler volume_scheduler_driver=nova.scheduler.chance.ChanceScheduler compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler But if you are using trunk version Nova, scheduler_driver should use 'nova.scheduler.filter_scheduler.FilterScheduler' directly. On Tue, Feb 19, 2013 at 10:06 AM, Wangpan hzwang...@corp.netease.com wrote: Hi all, Is there anyone has used the multi-scheduler property, is there any problem? Can we use this property into production environment? Thanks! 2013-02-19 Wangpan ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp -- Regards Huang Zhiteng ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Nova] Question about multi-scheduler
Hi Zhiteng, May what I said in the last mail is confused, What I want to ask is that, can we use more than one nova-scheduler service in one cluster? is it stable enough to be used in the production environment? Because I want to make the availability of scheduler service higher. thanks! 2013-02-19 Wangpan 发件人：Huang Zhiteng 发送时间：2013-02-19 10:15 主题：Re: [Openstack] [Nova] Question about multi-scheduler 收件人：Wangpanhzwang...@corp.netease.com 抄送：openstack _社区openstack@lists.launchpad.net Multi-scheduler was there for the days when Nova has to deal with both request for instance and volume. If you are using a version of Nova which still has nova-volume, I think multi-scheduler is a must. And there are two sub config option for Nova: http://docs.openstack.org/folsom/openstack-compute/admin/content/ch_scheduling.html scheduler_driver=nova.scheduler.multi.MultiScheduler volume_scheduler_driver=nova.scheduler.chance.ChanceScheduler compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler But if you are using trunk version Nova, scheduler_driver should use 'nova.scheduler.filter_scheduler.FilterScheduler' directly. On Tue, Feb 19, 2013 at 10:06 AM, Wangpan hzwang...@corp.netease.com wrote: Hi all, Is there anyone has used the multi-scheduler property, is there any problem? Can we use this property into production environment? Thanks! 2013-02-19 Wangpan ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp -- Regards Huang Zhiteng ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Nova] Question about multi-scheduler
Oh, I got it. I remember in last conference, Ryan Richard's 'consideration for building an openstack private cloud' mentioned using more than one scheduler instances to do HA when the cluster becomes large (this is not in his slides where you can find on slideshare.net but he orally mentioned it). But he also mentioned that adding more scheduler instances didn't help reducing processing time, which I suspect it won't reduce processing time for single request but it surely increase the concurrency of scheduler so should be helpful for large number of requests use case. Are you referring to certain new feature of Nova when saying 'multi scheduler property' or just referring to any method that running multiple nova scheduler instances? For latter, I think this is surely doable and someone out there has been using this kind of technique (in production I guess). On Tue, Feb 19, 2013 at 10:34 AM, Wangpan hzwang...@corp.netease.com wrote: Hi Zhiteng, May what I said in the last mail is confused, What I want to ask is that, can we use more than one nova-scheduler service in one cluster? is it stable enough to be used in the production environment? Because I want to make the availability of scheduler service higher. thanks! 2013-02-19 Wangpan 发件人：Huang Zhiteng 发送时间：2013-02-19 10:15 主题：Re: [Openstack] [Nova] Question about multi-scheduler 收件人：Wangpanhzwang...@corp.netease.com 抄送：openstack _社区openstack@lists.launchpad.net Multi-scheduler was there for the days when Nova has to deal with both request for instance and volume. If you are using a version of Nova which still has nova-volume, I think multi-scheduler is a must. And there are two sub config option for Nova: http://docs.openstack.org/folsom/openstack-compute/admin/content/ch_scheduling.html scheduler_driver=nova.scheduler.multi.MultiScheduler volume_scheduler_driver=nova.scheduler.chance.ChanceScheduler compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler But if you are using trunk version Nova, scheduler_driver should use 'nova.scheduler.filter_scheduler.FilterScheduler' directly. On Tue, Feb 19, 2013 at 10:06 AM, Wangpan hzwang...@corp.netease.com wrote: Hi all, Is there anyone has used the multi-scheduler property, is there any problem? Can we use this property into production environment? Thanks! 2013-02-19 Wangpan ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp -- Regards Huang Zhiteng -- Regards Huang Zhiteng ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Nova] Question about multi-scheduler
Thanks zhiteng! I'm referring to HA of nova-scheduler by deploying multiple of it to several hosts. 2013-02-19 Wangpan 发件人：Huang Zhiteng 发送时间：2013-02-19 10:59 主题：Re: Re: [Openstack] [Nova] Question about multi-scheduler 收件人：Wangpanhzwang...@corp.netease.com 抄送：openstack _社区openstack@lists.launchpad.net Oh, I got it. I remember in last conference, Ryan Richard's 'consideration for building an openstack private cloud' mentioned using more than one scheduler instances to do HA when the cluster becomes large (this is not in his slides where you can find on slideshare.net but he orally mentioned it). But he also mentioned that adding more scheduler instances didn't help reducing processing time, which I suspect it won't reduce processing time for single request but it surely increase the concurrency of scheduler so should be helpful for large number of requests use case. Are you referring to certain new feature of Nova when saying 'multi scheduler property' or just referring to any method that running multiple nova scheduler instances? For latter, I think this is surely doable and someone out there has been using this kind of technique (in production I guess). On Tue, Feb 19, 2013 at 10:34 AM, Wangpan hzwang...@corp.netease.com wrote: Hi Zhiteng, May what I said in the last mail is confused, What I want to ask is that, can we use more than one nova-scheduler service in one cluster? is it stable enough to be used in the production environment? Because I want to make the availability of scheduler service higher. thanks! 2013-02-19 Wangpan 发件人：Huang Zhiteng 发送时间：2013-02-19 10:15 主题：Re: [Openstack] [Nova] Question about multi-scheduler 收件人：Wangpanhzwang...@corp.netease.com 抄送：openstack _社区openstack@lists.launchpad.net Multi-scheduler was there for the days when Nova has to deal with both request for instance and volume. If you are using a version of Nova which still has nova-volume, I think multi-scheduler is a must. And there are two sub config option for Nova: http://docs.openstack.org/folsom/openstack-compute/admin/content/ch_scheduling.html scheduler_driver=nova.scheduler.multi.MultiScheduler volume_scheduler_driver=nova.scheduler.chance.ChanceScheduler compute_scheduler_driver=nova.scheduler.filter_scheduler.FilterScheduler But if you are using trunk version Nova, scheduler_driver should use 'nova.scheduler.filter_scheduler.FilterScheduler' directly. On Tue, Feb 19, 2013 at 10:06 AM, Wangpan hzwang...@corp.netease.com wrote: Hi all, Is there anyone has used the multi-scheduler property, is there any problem? Can we use this property into production environment? Thanks! 2013-02-19 Wangpan ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp -- Regards Huang Zhiteng -- Regards Huang Zhiteng ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
