Thread: Desperate help needed for Replication
I am trying to perform what I best understand as Multi-master asynchronous replication for postgres 7.3.3 servers. Afterresearching, I tried the pgReplication project (and made the simple modification as listed in their mailing lists),but was not able to build the environment needed for Redhat 7.3. My question is: is anyone doing this type of replication, and if you are not using pgReplicate, then what are you using? Thank you,
El Jue 23 Oct 2003 19:41, Chris M. Gamble escribió: > I am trying to perform what I best understand as Multi-master asynchronous replication for postgres 7.3.3 servers. After researching, I tried the pgReplication project (and made the simple modification as listed in their mailing lists), but was not able to build the environment needed for Redhat 7.3. > > My question is: is anyone doing this type of replication, and if you are not using pgReplicate, then what are you using? 1) I think the best shot should be eRServ http://gborg.postgresql.org/project/erserver/projdisplay.php 2) Upgrade your DB server to 7.3.4. Your actual version has a serious bug which can cause crashes of the system. -- select 'mmarques' || '@' || 'unl.edu.ar' AS email; ----------------------------------------------------------------- Martín Marqués | mmarques@unl.edu.ar Programador, Administrador, DBA | Centro de Telemática Universidad Nacional del Litoral -----------------------------------------------------------------
Isnt the erserv project limited to Read-only slave stations? When I looked at it, it did not seem to indicate that I could make an update on any of the postgres servers and havethat update replicated to all others. It looked as though I could only update at 1 server. > El Jue 23 Oct 2003 19:41, Chris M. Gamble escribió: > > I am trying to perform what I best understand as Multi-master asynchronous > replication for postgres 7.3.3 servers. After researching, I tried the > pgReplication project (and made the simple modification as listed in their > mailing lists), but was not able to build the environment needed for Redhat > 7.3. > > > > My question is: is anyone doing this type of replication, and if you are not > using pgReplicate, then what are you using? > > 1) I think the best shot should be eRServ > > http://gborg.postgresql.org/project/erserver/projdisplay.php > > 2) Upgrade your DB server to 7.3.4. Your actual version has a serious bug > which can cause crashes of the system. > >
Yes, just saw that about the multi-master. It's in the feature request list. Anyway, it's the best replication I've got my hands on. Else, you might have to buy some commercial Replication aplicaction, but I don't know which would be suitable for you're needs. El Jue 23 Oct 2003 19:55, Chris M. Gamble escribió: > Isnt the erserv project limited to Read-only slave stations? > > When I looked at it, it did not seem to indicate that I could make an update on any of the postgres servers and have that update replicated to all others. It looked as though I could only update at 1 server. > > > El Jue 23 Oct 2003 19:41, Chris M. Gamble escribió: > > > I am trying to perform what I best understand as Multi-master asynchronous > > replication for postgres 7.3.3 servers. After researching, I tried the > > pgReplication project (and made the simple modification as listed in their > > mailing lists), but was not able to build the environment needed for Redhat > > 7.3. > > > > > > My question is: is anyone doing this type of replication, and if you are not > > using pgReplicate, then what are you using? > > > > 1) I think the best shot should be eRServ > > > > http://gborg.postgresql.org/project/erserver/projdisplay.php > > > > 2) Upgrade your DB server to 7.3.4. Your actual version has a serious bug > > which can cause crashes of the system. > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster > -- select 'mmarques' || '@' || 'unl.edu.ar' AS email; ----------------------------------------------------------------- Martín Marqués | mmarques@unl.edu.ar Programador, Administrador, DBA | Centro de Telemática Universidad Nacional del Litoral -----------------------------------------------------------------
On Thu, Oct 23, 2003 at 07:53:08PM -0300, Martin Marques wrote: > El Jue 23 Oct 2003 19:41, Chris M. Gamble escribi?: > > I am trying to perform what I best understand as Multi-master asynchronous > replication for postgres 7.3.3 servers. After researching, I tried the > 1) I think the best shot should be eRServ It most certainly would not. Erserver is good for exactly one thing (and some people think it isn't good at this): single-master, possibly-multi-slave asynchronous replication. Given its current design, it will _never_ be able to do multi-master replication unless it is "data merge" sort of stuff (e.g. table1 and table 2 on db1; table 3 and table 4 on db2; and table1, table 2, table3, and table4 on db3). A -- ---- Andrew Sullivan 204-4141 Yonge Street Afilias Canada Toronto, Ontario Canada <andrew@libertyrms.info> M2P 2A8 +1 416 646 3304 x110
On Thu, Oct 23, 2003 at 05:55:10PM -0500, Chris M. Gamble wrote: > update replicated to all others. It looked as though I could > only update at 1 server. That's right. At the moment, AFAIK, nobody can offer what you want, although I have heard suggestions otherwise. The distance that IK travels is limited :-/ A -- ---- Andrew Sullivan 204-4141 Yonge Street Afilias Canada Toronto, Ontario Canada <andrew@libertyrms.info> M2P 2A8 +1 416 646 3304 x110