Re: Streaming-only Remastering
От | Simon Riggs |
---|---|
Тема | Re: Streaming-only Remastering |
Дата | |
Msg-id | CA+U5nMJHAd1TPzZLuhnordBZB8FAy4HBE5PxzfpysU+fTkN2hA@mail.gmail.com обсуждение исходный текст |
Ответ на | Streaming-only Remastering (Joshua Berkus <josh@agliodbs.com>) |
Ответы |
Re: Streaming-only Remastering
Re: Streaming-only Remastering Re: Streaming-only Remastering |
Список | pgsql-hackers |
On 10 June 2012 19:47, Joshua Berkus <josh@agliodbs.com> wrote: > So currently we have a major limitation in binary replication, where it is not possible to "remaster" your system (thatis, designate the most caught-up standby as the new master) based on streaming replication only. This is a major limitationbecause the requirement to copy physical logs over scp (or similar methods), manage and expire them more than doublesthe administrative overhead of managing replication. This becomes even more of a problem if you're doing cascadingreplication. The "major limitation" was solved by repmgr close to 2 years ago now. So while you're correct that the patch to fix that assumed that archiving worked as well, it has been possible to operate happily without it. http://www.repmgr.org New versions for 9.2 will be out soon. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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