Обсуждение: database replication
Hello, i want to ask if someone have experiance with data replication for postgres. I know there is project called postgres-r going on but it's still unfinnished. But I need much simplier system more mysql like. Having one server for insert that are propagated to other servers used just for selects. I know i can probably do it myself with triggers and some deamon, but i want to ask if someone have done it before, as i don't like to reinvent wheel here;-) I think that this cases should be taken in consideration: * one DB slows down * one DB crash down * resync DB after some transaction failure * add new DB to system * remove (temporarily) DBs from the system (for trouble shooting). I have tried http://pgreplicator.sourceforge.net but it's not working very well for me. Any linka and pointers will be helpfull. Thanks Peter __________________________________________________ Yahoo! - We Remember 9-11: A tribute to the more than 3,000 lives lost http://dir.remember.yahoo.com/tribute
On Tue, 10 Sep 2002, lego lego wrote: Hello, > i want to ask if someone have experiance with data > replication for postgres. I know there is project > called postgres-r going on but it's still > unfinnished. But I need much simplier system more > mysql like. Having one server for insert that > are propagated to other servers used just for > selects. There are some attempts at replication. One is rserv, which is included in contrib/. It's not very well documented, but it gets the job done if you look at it very hard. If you want better support or more perfomance, you can ask the guys at www.pgsql.com, as they sell a commercial version. There are others, but this one should be enough. -- Alvaro Herrera (<alvherre[@]dcc.uchile.cl>) Si no sabes adonde vas, es muy probable que acabes en otra parte.
On Tue, Sep 10, 2002 at 02:19:06AM -0700, lego lego wrote: > I know i can probably do it myself with triggers and > some > deamon, but i want to ask if someone have done it > before, > as i don't like to reinvent wheel here;-) Then cd to contrib/rserv, and have a look there. That's more or less the strategy. You can buy s souped-up version of it from PostgreSQL, Inc. We use it, and it's good. I've also read reports of success with DBMirror, which will be in the contrib/ tree in 7.3. The beginning announcement is at http://archives.postgresql.org/pgsql-patches/2002-02/msg00004.php. I haven't used it, so I can't report on it. A -- ---- Andrew Sullivan 204-4141 Yonge Street Liberty RMS Toronto, Ontario Canada <andrew@libertyrms.info> M2P 2A8 +1 416 646 3304 x110