| Q1: How many can I extend
| The number of the maximums of Cluster DB
is 128. If you need more Cluster DBs , you can also change a maximum value.
However, if Cluster DB server is extended, the load of a replication server
and a load balance server will increase. You had better extend it only the
required minimum number to your system.
| Q2: Is it possible to
run a replication server and Cluster DB server on one machine?
| It is possible when you use pgcluster-1.0.6cv4
or later. But probably, in the system which needs a load balance and a high-availability,
such system composition will be dangerous. If a load balance or a high-availability
is required in your system, you should run a replication server independently.
| Q3: Is it necessary to
execute the VACUUM command for every Cluster DB?
| When you execute the VACUUM command to
one Cluster DB, a command will be reproduced and will be executed in all
the Cluster DBs. If you execute the VACUUM FULL command to Cluster DB, the
VACUUM FULL command is executed in all the Cluster DBs. Probably, it will
be better to have stopped the system and to execute one command at a time,
when you want to execute the VACUUM FULL command.
| Q4: Is a backup command
| PGCluster replicates neither pg_dump nor
the COPY (TO) command.
| Q5: Does PGCluster support
the latest version of PostgreSQL?
| PGCluster-1.1.0 are made based on PostgreSQL7.4.6.
I am going to make PGCluster Which is based on PostgreSQL8.0 after next