[Postgres-xl-developers] Postgres-XC/XL cluster level redundancy
rickyjiang911 at gmail.com
Mon Dec 14 04:25:28 PST 2015
We're planning to build a database cluster using Postgres-XC or XL.
Besides the cluster, we're also going to build a backup cluster for
Is it possible for Postgres XC or XL to do this? If yes, how to synchronize
data between the corresponding DataNodes and Coordinators?
Suppose we have a Cluster A and the backup Cluster B as following.
GTM Master: gtm1
GTM Slave: gtm2
Coordinator Master: coord1, coord2
Coordinator Slave: coord3, coord4
DataNode Master: dn1, dn2
DataNode Slave: dn3, dn4
GTM Master: gtm3
GTM Slave: gtm4
Coordinator Master: coord5, coord6
Coordinator Slave: coord7, coord8
DataNode Master: dn5, dn6
DataNode Slave: dn7, dn8
They are located in the same city but in different areas and the connection
between them are fast, for example, 1000M.
I think data synchronization should work in this way,
Coordinator Master: coord1-->coord5, coord2-->coord6
DataNode Master: dn1-->dn5, dn2-->dn6
GTM: I don't know how.
Do you think Postgres-XC or XL can work this way? What else should be
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