iNagMon Network Monitoring on the iPhone

Nagios is a popular network monitoring tool that can be used to monitor network services as well as data like processor load due to an SNMP interface. The visualization of status and alert messages can be conducted with a Web interface. Many plugins for the Nagios system are available that extend its features, also wrt. visualization of data. But so far, none of them allows users of PDAs like, e.g., the iPhone to comfortably interact with Nagios on their mobile devices yet. Considering that system administrators want to have an overview over the monitored system anytime anywhere, we built a Nagios visualization application for the iPhone. In this paper, we will show details concerning the implementation of the iNagMon application for the Apple iPhone. Most importantly, we present a solution how to cope with intermittent connectivity of a mobile device by replicating Nagios data with a resource-aware strategy. The iPhone has enough power and the necessary infrastructure hardware in order to develop such an application.