Server monitoring Used Nagios Core running on openSUSE 11.4 to monitor various servers including Windows, Linux and Unix (Solaris) servers to replace a Network Eagle system used previously which did not provide all the requirements for monitoring. Started with a number of products primarily in the open source field before selecting Nagios. Later added NagiosQL for configuration.
The biggest problem with the project was getting the required buy-in from some of the Technical Analyst side. I would have tried harder to get this and to try to tie in some of the required installations more tightly when commissioning new servers.