FreeHA 1.0 review

FreeHA is designed to provide a free, portable, and easy to use (compared to alternatives) program to run nodes in a high availabilit

License: GPL (GNU General Public License) File size: 21K Developer: Phil Brown

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FreeHA is designed to provide a free, portable, and easy to use (compared to alternatives) program to run nodes in a high availability cluster.

FreeHA will let you run a service (program), or group of services, on a computer, but have one or more others running in standby mode. The service can be whatever kind of demon or program you would normally run on a UNIX box.

When and if the service fails on the initial node, one of the standby servers will automatically start the service(s) running on itself. Because of this automatic and normally fast restarting of the service, this sort of configuration is called a "Highly Available" cluster/configuration. "Highly Available", or "High Availability" == 'H.A.'

Requirements:
Two or more computers that can compile the software
Multiple network interfaces shared between them (Ideally, PRIVATE interfaces)
Some kind of service, or services, that you want to make sure are running as close to "always" as possible.

Right now, you also need some minimal (teeny tiny) amount of shellscripting knowledge to start up your own services, until I get enough contributions of template scripts to cover a bunch of different areas.

Sample areas would include:

Oracle (...Mysql,PostGres, etc)
Jrun, other "application servers",...
LDAP services
Outbound mail gateways (smtp.yourcompany.com)