Instances are NetScaler appliances that you can manage, monitor, and troubleshoot using NetScaler MAS. You must add instances to NetScaler MAS to monitor them. Instances can be added when you set up NetScaler MAS or at a later time as well. After you add instances to NetScaler MAS, they are continuously polled to collect information that can later be used to resolve issues or as reporting data.
Instances can be grouped as a static group or as a private IP-block. A static group of instances can be useful when you want to run specific tasks such as configuration jobs, and so on. A private IP-block groups your instances based on their geographical locations.
You can add instances either while setting up the NetScaler MAS server for the first time or at a later time. To add instances, you must specify either the host name or IP address of each NetScaler instance, or a range of IP addresses.
To learn how to add an instance to NetScaler MAS, see Add Instances to NetScaler MAS.
When you add an instance to the NetScaler MAS server, the server implicitly adds itself as a trap destination for the instance and collects inventory of the instance. To learn more, see How NetScaler MAS discovers instances.
After you’ve added an instance, you can delete it by navigating to Networks> Dashboard and click All Instances. On the Instances page, select the instance you want to delete and click Remove.
The per-instance dashboard in NetScaler MAS displays data in a tabular and graphical format for the selected instance. Data collected from your instance during the polling process is displayed on the dashboard.
By default, every minute, managed instances are polled for data collection. Statistical information such as state, the HTTP requests per second, CPU usage, memory usage, and throughput are continuously collected using NITRO calls. As an administrator, you can view all this collected data on a single page, identify issues in the instance, and take immediate action to rectify them.
To view a specific instance’s dashboard, navigate to Networks > Instances. From the summary, choose the instance type and then, select the instance you want to view and click Dashboard.
The following illustration provides an overview of the various data that is displayed on the per-instance dashboard: