[openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Dmitry Mescheryakov
Hello folks, A number of OpenStack and related projects have a need to perform operations inside VMs running on OpenStack. A natural solution would be an agent running inside the VM and performing tasks. One of the key questions here is how to communicate with the agent. An idea which was

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Julien Danjou
On Thu, Mar 06 2014, Dmitry Mescheryakov wrote: So, messaging people, what is your opinion on that idea? I've already raised that question in the list [1], but seems like not everybody who has something to say participated. So I am resending with the different topic. For example, yesterday we

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Doug Hellmann
On Thu, Mar 6, 2014 at 10:25 AM, Dmitry Mescheryakov dmescherya...@mirantis.com wrote: Hello folks, A number of OpenStack and related projects have a need to perform operations inside VMs running on OpenStack. A natural solution would be an agent running inside the VM and performing tasks.

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Georgy Okrokvertskhov
Hi Julien, I there are valid reasons why we can consider MQ approach for communicating with VM agents. The first obvious reason is scalability and performance. User can ask infrastructure to create 1000 VMs and configure them. With HTTP approach it will lead to a corresponding number of

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Julien Danjou
On Thu, Mar 06 2014, Georgy Okrokvertskhov wrote: I there are valid reasons why we can consider MQ approach for communicating with VM agents. The first obvious reason is scalability and performance. User can ask infrastructure to create 1000 VMs and configure them. With HTTP approach it will

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Daniel P. Berrange
On Thu, Mar 06, 2014 at 07:25:37PM +0400, Dmitry Mescheryakov wrote: Hello folks, A number of OpenStack and related projects have a need to perform operations inside VMs running on OpenStack. A natural solution would be an agent running inside the VM and performing tasks. One of the key

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Georgy Okrokvertskhov
On Thu, Mar 6, 2014 at 8:59 AM, Julien Danjou jul...@danjou.info wrote: On Thu, Mar 06 2014, Georgy Okrokvertskhov wrote: I there are valid reasons why we can consider MQ approach for communicating with VM agents. The first obvious reason is scalability and performance. User can ask

Re: [openstack-dev] [Oslo] oslo.messaging on VMs

2014-03-06 Thread Steven Dake
On 03/06/2014 10:24 AM, Daniel P. Berrange wrote: On Thu, Mar 06, 2014 at 07:25:37PM +0400, Dmitry Mescheryakov wrote: Hello folks, A number of OpenStack and related projects have a need to perform operations inside VMs running on OpenStack. A natural solution would be an agent running inside