[ovirt-devel] Engine High Availability

[Yaniv Kaul]

On Fri, Mar 4, 2016 at 11:48 AM, Sunny Shin <sunny4s.git at gmail.com> wrote:

>
> Yaniv,
>
> Could you a little bit more elaborate what you are working on for engine
> scailability? I thought that active-active ha is the only way for that.
>

Active Active is useful for both HA (where we believe hosted-engine is a
good solution) as well as scalability. If we improve the current
scalability, then we are good there too.
I've given several items below - it'd be difficult to enumerate all of them
- I suggest going through the gerrit commits in the last 2 months or so and
look at some of the work that has taken and is taking place, across all
areas of the product. Few random examples:
https://gerrit.ovirt.org/#/c/36593/
https://gerrit.ovirt.org/#/c/51235/


Is there anything specifically you are looking for?


> Sunny
>
>
> 2016년 3월 4일 금요일, Yaniv Kaul<ykaul at redhat.com>님이 작성한 메시지:
>
>
>>
>> On Fri, Mar 4, 2016 at 10:45 AM, Sunny Shin <sunny4s.git at gmail.com>
>> wrote:
>>
>>> Hi Yaniv,
>>>
>>> Is there a plan to implement active-active HA in the near future? Is
>>> there any progress on it since the discussion in August 2013?
>>>
>>
>> No, not at the moment. We feel that Self-Hosted Engine (SHE) is a great
>> solution thus far.
>> We are working on improving the performance and scale of the engine, to
>> be able to handle more load, more hosts, more VMs, etc.
>> This is an ongoing work across all components, from VDSM, to engine core,
>> REST API, database calls and more.
>> Y.
>>
>>
>>>
>>> Sunny
>>>
>>> 2016-03-04 17:38 GMT+09:00 Yaniv Kaul <ykaul at redhat.com>:
>>>
>>>>
>>>>
>>>> On Fri, Mar 4, 2016 at 2:03 AM, Sunny Shin <sunny4s.git at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> In the new architecture page (
>>>>> http://www.ovirt.org/documentation/architecture/architecture/),
>>>>> overall architecture picture shows that engine supports active-active high
>>>>> availability.
>>>>>
>>>>
>>>> This is inaccurate - the engine is not highly available in A/A
>>>> architecture. I'd appreciate if you could file an issue for it so we'll fix
>>>> this page.
>>>>
>>>>
>>>>>
>>>>> However, as per engine HA page (
>>>>> http://www.ovirt.org/develop/release-management/features/engine/engine-high-availability/),
>>>>> active-active HA is not supported yet and there are several implementation
>>>>> issues.
>>>>>
>>>>> So, could anyone give me a brief explanation about discrepancy between
>>>>> these two pages, and about the plan to implement this feature if not
>>>>> implemented yet?
>>>>>
>>>>
>>>> I suggest looking at self-hosted engine, which provides non-A/A high
>>>> availability for the engine.
>>>> Y.
>>>>
>>>>
>>>>>
>>>>> Sunny
>>>>>
>>>>> _______________________________________________
>>>>> Devel mailing list
>>>>> Devel at ovirt.org
>>>>> http://lists.ovirt.org/mailman/listinfo/devel
>>>>>
>>>>
>>>>
>>>
>>
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