Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

I would add on top of that Dmirty said that HA queues also increases probability to have messages duplications under certain scenarios (besides of that they are ~10x slower). Would Openstack services tolerate if RPC request will be duplicated? What I've already learned - No. Also if

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

2015-12-02 13:11 GMT+03:00 Bogdan Dobrelya : > On 01.12.2015 23:34, Peter Lemenkov wrote: > > Hello All! > > > > Well, side-effects (or any other effects) are quite obvious and > > predictable - this will decrease availability of RPC queues a bit. > > That's for sure. > >

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

Dmitry Although, I am a big fan of disabling replication for RPC, I think it is too late to introduce it so late by default. I would suggest that we control this part of OCF script with a specific parameter 'e.g. enable RPC replication' and set it to 'true' by default. Then we can set this option

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

Vova, Folks, +1 to "set this option to false as an experimental feature" Thanks, Dims On Wed, Dec 2, 2015 at 10:08 AM, Vladimir Kuklin wrote: > Dmitry > > Although, I am a big fan of disabling replication for RPC, I think it is too > late to introduce it so late by

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

To: OpenStack Development Mailing List (not for usage questions) <openstack-dev@lists.openstack.org> Subject: Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ Vova, Folks, +1 to "set this option to false as an experimental feature" Thanks, Dims On Wed, Dec 2,

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

2015-12-02 16:52 GMT+03:00 Jordan Pittier : > > On Wed, Dec 2, 2015 at 1:05 PM, Dmitry Mescheryakov < > dmescherya...@mirantis.com> wrote: > >> >> >> My point is simple - lets increase our architecture scalability by 2-3 >> times by _maybe_ causing more errors for

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

On 01.12.2015 23:34, Peter Lemenkov wrote: > Hello All! > > Well, side-effects (or any other effects) are quite obvious and > predictable - this will decrease availability of RPC queues a bit. > That's for sure. And consistency. Without messages and queues being synced between all of the

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

Hi, On Tue, Dec 1, 2015 at 11:34 PM, Peter Lemenkov wrote: > Hello All! > > Well, side-effects (or any other effects) are quite obvious and > predictable - this will decrease availability of RPC queues a bit. > That's for sure. > Imagine the case when user creates VM

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

2015-12-02 12:48 GMT+03:00 Sergii Golovatiuk : > Hi, > > > On Tue, Dec 1, 2015 at 11:34 PM, Peter Lemenkov > wrote: > >> Hello All! >> >> Well, side-effects (or any other effects) are quite obvious and >> predictable - this will decrease availability

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

On Wed, Dec 2, 2015 at 1:05 PM, Dmitry Mescheryakov < dmescherya...@mirantis.com> wrote: > > > My point is simple - lets increase our architecture scalability by 2-3 > times by _maybe_ causing more errors for users during failover. The > failover time itself should not get worse (to be tested by

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

Hello All! Well, side-effects (or any other effects) are quite obvious and predictable - this will decrease availability of RPC queues a bit. That's for sure. However, Dmitry's guess is that the overall messaging backplane stability increase (RabitMQ won't fail too often in some cases) would

[openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

Folks, I would like to request feature freeze exception for disabling HA for RPC queues in RabbitMQ [1]. As I already wrote in another thread [2], I've conducted tests which clearly show benefit we will get from that change. The change itself is a very small patch [3]. The only thing which I

Re: [openstack-dev] [Fuel][FFE] Disabling HA for RPC queues in RabbitMQ

Hi, -1 for FFE for disabling HA for RPC queue as we do not know all side effects in HA scenarios. On Tue, Dec 1, 2015 at 7:34 PM, Dmitry Mescheryakov < dmescherya...@mirantis.com> wrote: > Folks, > > I would like to request feature freeze exception for disabling HA for RPC > queues in RabbitMQ