Re: [Postgres-xc-developers] Developing HA for PG XC ( was Re: Pacemaker RA for datanode/coordinator)

[坂田 哲夫 <sak...@la...>]

Dear folks,

(2012/08/10 19:37), Aris Setyawan wrote:
>> Please understand that (mainly because of administrative reasons)
> 
> What kind of administrative reasons, did you mean here?

I meant that it would simply take time to get internal approval for us
to release HA code in an open source; It will be released by the end of
this calendar year.

However, once the HA code is released, we can make HA teams activities
open to public, as I mentioned before.

Best Regards;
---
Tetsuo Sakata.


> 
> If public unable to join the development process, then this HA/RA will
> be easily to be commercial product after it begin stable by community
> testing.
> 
> Eg: Bizgres, C-Store. They end to be "dead" opensource projects.
> 
> I think we should develop our own HA, which every one can participate
> into. Thus, we can have an "HA" of development process.
> 
> On 8/10/12, 坂田　哲夫 <sak...@la...> wrote:
>> Dear folks,
>>
>> I'm involved in HA facility implementation for Postgres-XC.  This work
>> began lecenty by a separate team from Postgres-XC core, say, XC HA team.
>>     We're planning to release this facility as an open source software by
>> the end of this calendar year.
>>
>> The Postgres-XC HA facility will be developed in two phases:
>>
>> Phase1: Furnish fundamental functionality to give 1) redundancy to XC
>> core component based on streaming replication which makes transactional
>> data in datanode durable, and 2) backup GTM with GTM stand-by to handle
>> GTM failure.    Basic	feature of 1) will be taken from PostgreSQL work
>> and 2) will be taken from Postgres-XC core feature respectively.
>>
>> Phase2: Integrate Postgres-XC and Linux-HA.   When one of the
>> Postgres-XC components fails, it will be failed over automatically to
>> continue Postgres-XC operation.   For this purpose, XC HA team is
>> developing RAs (Resource Agents).    RA for coordinator and datanode
>> will be implemented first, and then for GTM.   XC HA team will be
>> involved in them too.
>>
>> So far, XC HA team has not released any of the code, documentation or
>> other materials.   Please understand that (mainly because of
>> administrative reasons) we're not planning to open XC HA team activities
>> to public except for requirements to Postgres-XC core, which might have
>> some influence to Postgres-XC design, performance and operations etc.
>>
>> The XC HA team is planning to make its activities open to public when
>> the first Postgres-XC HA facility is released.
>>
>> Best Regards;
>> ---
>> Tetsuo Sakata
>>
>>
>> (2012/07/27 9:20), Koichi Suzuki wrote:
>>> I've heard another group is working together with Linux HA Japan to
>>> provide XC RA's.
>>>
>>> Sakata-san, could you provide related info if available?
>>>
>>> Regards;
>>> ----------
>>> Koichi Suzuki
>>>
>>>
>>> 2012/7/24 Nikhil Sontakke <ni...@st...>:
>>>> Hi,
>>>>
>>>> So what's the latest status of these HA activities for PGXC?
>>>>
>>>> Like the coordinator/datanode agents being discussed here, do we have
>>>> agents for GTM for example? Also is this happening in some open source
>>>> group where we can participate and see the latest and greatest source
>>>> changes?
>>>>
>>>> Regards,
>>>> Nikhils
>>
>> --
>> sakata.tetsuo _at_ lab.ntt.co.jp
>> SAKATA, Tetsuo. Shinagawa Tokyo JAPAN.
>>
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-- 
sakata.tetsuo _at_ lab.ntt.co.jp
SAKATA, Tetsuo. Shinagawa Tokyo JAPAN.