Custom Groups are collections of host group or service group objects at the user interface level and provide a more streamlined navigation and logical organization of monitors. They allow an administrator to group by, for example business functions, locations, or infrastructure setup and make these monitored segments more accessible. This can be very useful if you have a certain batch of servers attached to an array of servers, and from a system manager perspective an administrator does not have to worry about problems on certain segments.
Custom, host, service groups
The Custom Groups feature is managed through an Administrator using the Configuration > Custom Groups menu option.
In this example we focus on technology segments using Linux and Windows servers. We've created two top level custom groups, East Region and West Region. Within the East Region custom group we have defined two additional custom groups, LinuxServers and WindowsServers, and have added configured host groups within each (e.g., RedHatServers, Windows2008Servers). The Host Groups and Service Groups options are used to create host groups and service groups to be used as custom group members. Nagios Monitoring configured host groups and service groups can also be members of custom groups.
Custom Groups are integrated into the Status Summary application. At the top of the status screen a path sequence is displayed to the last selected object. In this example, the path sequence starts with the custom group East Region, and the subsequent custom group LinuxServersEast, and then the host group SLESServersEast along with a detail information and actions panel on the right.
The current monitor status (e.g., Critical, Warning) gets bubbled-up to the top from members within the custom group.
Custom Groups are available to all users independent of their membership. Roles can be configured with assigned host groups, service groups, and custom groups to control access. View restrictions by role for host groups and service groups will be honored by a custom group. And a host group or service group can be a member of multiple custom groups.
For more information see Users, Roles and Permissions.
How to create custom groups (Knowledge Base)