From: Koichi S. <koi...@gm...> - 2012-08-13 05:11:28
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It really is. I do hope that requirement to XC core is made open as early as possible and XC HA team listens to requirements from the community. So far, I talked with XC HA team member personally. Fortunately, PostgreSQL RA for Pacemaker/Heartbeat is now open to public. I tested all the PostgreSQL scripts for datanode/coordinator and found they work fine. I understand it is a great challenge to establish HA architecture for complexed systems like XC. ---------- Koichi Suzuki 2012/8/13 Ashutosh Bapat <ash...@en...>: > That's a really big mile stone for Postgres-XC. Many people have expressed > concerns about high possibilitiy of SPOF in XC. This solution would prove > beneficial. > > > On Fri, Aug 10, 2012 at 3:02 PM, 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. >> >> >> ------------------------------------------------------------------------------ >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >> _______________________________________________ >> Postgres-xc-developers mailing list >> Pos...@li... >> https://lists.sourceforge.net/lists/listinfo/postgres-xc-developers > > > > > -- > Best Wishes, > Ashutosh Bapat > EntepriseDB Corporation > The Enterprise Postgres Company > > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Postgres-xc-developers mailing list > Pos...@li... > https://lists.sourceforge.net/lists/listinfo/postgres-xc-developers > |