PostgreSQL is available in all SuSE versions by default. However, the SuSE "snapshots" a specific version of PostgreSQL that is then supported throughout the lifetime of that SuSE version.
Should packages not be available for your distribution, or there are issues with your package manager, there are graphical installers available.
Finally, most Linux systems make it easy to build from source.
RPMs for SUSE Linux and openSUSE are available from the openSUSE Build Service in the project server:database:postgresql. Platform-specific RPM packages are available for PostgreSQL as well as a variety of related software. Use the search facility to find suitable packages. Documentation is also available there.
Generic RPM and DEB packages that provide a server-only distibution are avaliable for some 32 and 64-bit Linux distributions. These packages provide a single set of binaries and consistent packaging across different Linux distributions. They are designed for server installation where a GUI is not available and consistency across multiple distributions is a requirement.
Download the packages from OpenSCG for all supported versions.
Note: The cross distribution packages do not fully integrate with the platform-specific packaging systems.
Installers are available for 32 and 64 bit Linux distributions and include PostgreSQL, pgAdmin and the StackBuilder utility for installation of additional packages. The PostgreSQL 8.4 installers have been tested with a number of Linux distributions and should work on Ubuntu 6.06 and above, Fedora 6 and above, CentOS/RedHat Enterprise Linux 4 and above and others. The 9.0 and later installers have only been tested on more recent distributions.
Download the installer from EnterpriseDB for all supported versions.
Note: The installers do not integrate with platform-specific packaging systems.