Monitoring Data - Big Data Made Easy: A Working Guide to the Complete Hadoop Toolset - page 219

Figure 7-19. Nagios map display
If I click one of the servers in the map to drill down to determine server status, I get the results shown in Figure 7-20 .
Figure 7-20. Nagios server details
The Nagios display follows a traffic light system: green is good, warnings are yellow, and errors are red. Clicking
the root partition service, as shown in Figure 7-20 , allows you to drill down further to determine service details, as
shown in Figure 7-21 .