Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-05-18 Thread Bogdan Dobrelya
On 05/17/2016 08:55 PM, Clint Byrum wrote: > I missed your reply originally, so sorry for the 2 week lag... > > Excerpts from Mike Bayer's message of 2016-04-30 15:14:05 -0500: >> >> On 04/30/2016 10:50 AM, Clint Byrum wrote: >>> Excerpts from Roman Podoliaka's message of 2016-04-29 12:04:49

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-05-17 Thread Clint Byrum
I missed your reply originally, so sorry for the 2 week lag... Excerpts from Mike Bayer's message of 2016-04-30 15:14:05 -0500: > > On 04/30/2016 10:50 AM, Clint Byrum wrote: > > Excerpts from Roman Podoliaka's message of 2016-04-29 12:04:49 -0700: > >> > > > > I'm curious why you think setting

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-05-17 Thread Bogdan Dobrelya
On 04/22/2016 05:42 PM, Bogdan Dobrelya wrote: > [crossposting to openstack-operat...@lists.openstack.org] > > Hello. > I wrote this paper [0] to demonstrate an approach how we can leverage a > Jepsen framework for QA/CI/CD pipeline for OpenStack projects like Oslo > (DB) or Trove, Tooz DLM and

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-04-30 Thread Mike Bayer
On 04/30/2016 10:50 AM, Clint Byrum wrote: Excerpts from Roman Podoliaka's message of 2016-04-29 12:04:49 -0700: I'm curious why you think setting wsrep_sync_wait=1 wouldn't help. The exact example appears in the Galera documentation:

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-04-30 Thread Clint Byrum
Excerpts from Roman Podoliaka's message of 2016-04-29 12:04:49 -0700: > Hi Bogdan, > > Thank you for sharing this! I'll need to familiarize myself with this > Jepsen thing, but overall it looks interesting. > > As it turns out, we already run Galera in multi-writer mode in Fuel > unintentionally

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-04-30 Thread Mike Bayer
On 04/30/2016 02:57 AM, bdobre...@mirantis.com wrote: Hi Roman. That's interesting, although’s hard to believe (there is no slave lag in galera multi master). I can only suggest us to create another jepsen test to verify exactly scenario you describe. As well as other OpenStack specific

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-04-30 Thread bdobrelia
Hi Roman. That's interesting, although’s hard to believe (there is no slave lag in galera multi master). I can only suggest us to create another jepsen test to verify exactly scenario you describe. As well as other OpenStack specific patterns. Regards, Bogdan. Od: Roman Podoliaka

Re: [openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-04-29 Thread Roman Podoliaka
Hi Bogdan, Thank you for sharing this! I'll need to familiarize myself with this Jepsen thing, but overall it looks interesting. As it turns out, we already run Galera in multi-writer mode in Fuel unintentionally in the case, when the active MySQL node goes down, HAProxy starts opening

[openstack-dev] [Fuel][MySQL][DLM][Oslo][DB][Trove][Galera][operators] Multi-master writes look OK, OCF RA and more things

2016-04-22 Thread Bogdan Dobrelya
[crossposting to openstack-operat...@lists.openstack.org] Hello. I wrote this paper [0] to demonstrate an approach how we can leverage a Jepsen framework for QA/CI/CD pipeline for OpenStack projects like Oslo (DB) or Trove, Tooz DLM and perhaps for any integration projects which rely on