Re: Openstack and Cassandra

2017-01-01 Thread Shalom Sagges
Thanks for the info Romain, Can you tell me please what are the implications of not using CPU Pinning? Shalom Sagges DBA T: +972-74-700-4035 We Create Meaningful Connections

Re: Openstack and Cassandra

2016-12-28 Thread Romain Hardouin
Kilo is a bit old but the good news is that CPU pinning is available which IMHO is a must to run C* on Production.Of course your bottleneck will be shared HDDs. Best, Romain Le Mardi 27 décembre 2016 10h21, Shalom Sagges a écrit : Hi Romain,  Thanks for the

Re: Openstack and Cassandra

2016-12-27 Thread Shalom Sagges
Hi Romain, Thanks for the input! We currently use the Kilo release of Openstack. Are you aware of any known bugs/issues with this release? We definitely defined anti-affinity rules regarding spreading C* on different hosts. (I surely don't want to be woken up at night due to a failed host ;-) )

Re: Openstack and Cassandra

2016-12-26 Thread Romain Hardouin
Hi Shalom, I assume you'll use KVM virtualization so pay attention to your stack at every level:- Nova e.g. CPU pinning, NUMA awareness if relevant, etc. Have a look to extra specs.- libvirt - KVM- QEMU You can also be interested by resources quota on other OpenStack VMs that will be colocated

Re: Openstack and Cassandra

2016-12-22 Thread Shalom Sagges
management team to leverage > OpenStack whenever possible, and that includes Cassandra. I was against it > at first, but we have done some stress testing with it and had application > teams try it out. So far, there haven't been any issues. > > A good use case for Cassandra on Ope

Re: Openstack and Cassandra

2016-12-22 Thread Aaron Ploetz
case for Cassandra on OpenStack, is to support an internal-facing application that needs to scale for disk footprint, or to spin-up a quick dev environment. When building clusters to support those solutions, we haven't had any problems due to simply deploying on OpenStack. Our largest Cassandra

Re: Openstack and Cassandra

2016-12-22 Thread Shalom Sagges
h SSD > disks, I guess. > > > Best regards, Vladimir Yudovin, > *Winguzone <https://winguzone.com?from=list> - Cloud Cassandra Hosting* > > > On Wed, 21 Dec 2016 13:31:22 -0500 *Shalom Sagges > <shal...@liveperson.com <shal...@liveperson.com>>* wrote

Re: Openstack and Cassandra

2016-12-22 Thread Vladimir Yudovin
Shalom Sagges shal...@liveperson.com wrote Hi Everyone, I am looking into the option of deploying a Cassandra cluster on Openstack nodes instead of physical nodes due to resource management considerations. Does anyone has any insights regarding this? Can this combination work

Openstack and Cassandra

2016-12-21 Thread Shalom Sagges
Hi Everyone, I am looking into the option of deploying a Cassandra cluster on Openstack nodes instead of physical nodes due to resource management considerations. Does anyone has any insights regarding this? Can this combination work properly? Since the disks (HDDs) are part of one physical