# yum search postgresql | grep ^postgresql
postgresql-odbc.x86_64 : PostgreSQL ODBC driver
postgresql.i686 : PostgreSQL client programs
postgresql.x86_64 : PostgreSQL client programs
postgresql-contrib.x86_64 : Contributed modules distributed with PostgreSQL
postgresql-devel.i686 : PostgreSQL development header files and libraries
postgresql-devel.x86_64 : PostgreSQL development header files and libraries
postgresql-docs.x86_64 : Extra documentation for PostgreSQL
postgresql-ip4r.x86_64 : IPv4 and IPv4 range index types for PostgreSQL
postgresql-jdbc.noarch : JDBC driver for PostgreSQL
postgresql-libs.i686 : The shared libraries required for any PostgreSQL clients
postgresql-libs.x86_64 : The shared libraries required for any PostgreSQL
postgresql-pgpool-II.i686 : Pgpool is a connection pooling/replication server
postgresql-pgpool-II.x86_64 : Pgpool is a connection pooling/replication server
postgresql-pgpool-II-recovery.x86_64 : PGPool recovery add-on for PostgreSQL
postgresql-plparrot.x86_64 : A PostgreSQL procedural language for the Parrot
postgresql-plperl.x86_64 : The Perl procedural language for PostgreSQL
postgresql-plpython.x86_64 : The Python procedural language for PostgreSQL
postgresql-plruby.x86_64 : PostgreSQL Ruby Procedural Language
postgresql-pltcl.x86_64 : The Tcl procedural language for PostgreSQL
postgresql-server.x86_64 : The programs needed to create and run a PostgreSQL
postgresql-test.x86_64 : The test suite distributed with PostgreSQL
postgresql_autodoc.noarch : PostgreSQL AutoDoc Utility
postgresql-pgpool-II-devel.i686 : The development files for pgpool-II
postgresql-pgpool-II-devel.x86_64 : The development files for pgpool-II
postgresql-plruby-doc.x86_64 : Documentation for plruby
		

預設YUM源上面只有 8.4.13

# yum info postgresql-server
Loaded plugins: fastestmirror, presto, refresh-packagekit
Loading mirror speeds from cached hostfile
 * base: centos.uhost.hk
 * epel: mirror01.idc.hinet.net
 * extras: centos.uhost.hk
 * updates: centos.uhost.hk
Installed Packages
Name        : postgresql-server
Arch        : x86_64
Version     : 8.4.13
Release     : 1.el6_3
Size        : 14 M
Repo        : installed
From repo   : base
Summary     : The programs needed to create and run a PostgreSQL server
URL         : http://www.postgresql.org/
License     : PostgreSQL
Description : The postgresql-server package includes the programs needed to create
            : and run a PostgreSQL server, which will in turn allow you to create
            : and maintain PostgreSQL databases.  PostgreSQL is an advanced
            : Object-Relational database management system (DBMS) that supports
            : almost all SQL constructs (including transactions, subselects and
            : user-defined types and functions). You should install
            : postgresql-server if you want to create and maintain your own
            : PostgreSQL databases and/or your own PostgreSQL server. You also need
            : to install the postgresql package.
		

# yum install postgresql-server

# chkconfig postgresql on
# service postgresql initdb
# service postgresql start