Normally this process is handled by the Weathermap plugin for Cacti, which executes the Weathermap generator during every polling run (once every five minutes by default). In order to keep the map files up to date, they must be regenerated somewhat frequently. Since the graphical maps that are generated by Weathermap use static PNG files, they only represent the network state at the moment they are created. For information on the important command-line switches to the map generator, refer to the Automating the Map Generator section below. The Weathermap generator does not use a configuration file for the program itself, but instead uses command-line switches and the map control files to determine the map behavior. The sample configuration file is /usr/local/groundwork/nms/applications/cacti/plugins/weathermap/editor-config.php-dist, which can be renamed to editor-config.php once it has been edited to reflect your specific requirements. By default, the configuration file does not exist and must be created, although a sample configuration file is provided which can be copied into place. However, the program is able to use a configuration file to override some of the predefined settings, if needed. Setting the Editor Defaultsīy default, the Weathermap Editor uses internal defaults and compile-time switches to determine program behavior. Refer to the NMS Cacti chapter for more information on the Weathermap plugin for Cacti. For information on configuring user access to the "Weathermap" menu item, refer to the "Configuring Roles" section of the Administration documentation. Weathermap does not provide any user accounts or access controls itself, although you can restrict access to the map editor with GroundWork role privileges, and you can also restrict access to the Weathermap plugin for Cacti from within Cacti as well. As such, users who have been granted the appropriate role-based permission to access the Weathermap object can do so by logging into GroundWork Monitor, and then choosing the "Weathermap" entry from the main drop-down menu. The Weathermap web pages are provided by a NMS-specific instance of Apache, although the Weathermap web front-end is also integrated into GroundWork Monitor through the use of the JBoss Portal. The GroundWork NMS Weathermap package has its own unique configuration process. For more detailed discussion, refer to the online Weathermap documentation. This document discusses the basic configuration and operation of Weathermap. For example, the resulting maps can be used to provide a background image for a GroundWork Dashboard applet, if the user wishes to do so. However, Weathermap generates maps as PNG images with DHTML wrappers that provide interactive features such as hyperlinks and pop-up charts, so the map output can be used anywhere that a web page or PNG image can be used. Weathermap is primarily intended to be used with the GroundWork Cacti package, which provides direct support for executing the Weathermap graphing component through a plugin. Meanwhile, the editing component of Weathermap provides a web-based graphical front-end to the configuration files, and allows users to build the maps quickly and easily.
More specifically, the graphing component of Weathermap uses user-generated configuration files to build dynamic graphical maps of a network, including the nodes and links on a network, and then reads existing databases of network traffic to display the traffic levels on each link. Whereas most of the components in GroundWork Monitor are designed for the purpose of monitoring the devices on a network (such as measuring the available resources on a host and then generating alarms when conditions require it), Weathermap is designed to help administrators visualize the traffic between network devices.
In simple terms, Weathermap is an integrated toolkit for creating overhead maps that display the network traffic levels between selected devices. When the GroundWork NMS Weathermap package has been installed, a "Weathermap Editor" menu item will be present in the main drop-down menu. The GroundWork NMS Weathermap package is an open source toolkit for creating dynamic maps of network traffic, and is integrated into GroundWork Monitor as an optional component of the GroundWork Network Management System (NMS). Integrating Maps with GroundWork Monitor.
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