CIAgent can be set up to monitor system resources using File System Monitor, Event MIB, and Host Resources. For example, these subagents could be configured to monitor the CPU processor load and available free disk space.
What causes the agent to send a notification? When the processor load is higher than the configured threshold (in this case 75%), the Event MIB will send a trap to the management station. The management station could then notify the system administrator.
The Host Resources Subagent (
the Host Resources MIB document (RFC 2790). This MIB defines objects
that are useful for managing hosts systems, where the term host
can mean a computer that is connected to a network and can be accessed by
management station(s). The host is the machine where CIAgent is installed.
Information on the Host Resources custom page is divided into seven information areas:
The Event MIB (
eventagt) Subagent, SNMP Research's implementation of the DISMAN-EVENT-MIB
(RFC 2790), provides tools to help make IP host computers with SNMP agents
more self-managing. In particular, it allows CIAgent to monitor MIB objects
periodically and take action when a trigger condition is met. A trigger condition
is a preset condition, such as a rising or falling threshold or a true/false
Boolean condition. When triggered, the actions taken may include setting the
value of a MIB object, sending a notification, or both.
The File System Monitor (
fsagt) Subagent monitors file systems that are accessible
by the system where the Subagent is installed. This monitoring checks file system
sizes and initiates notifications if the size reaches a maximum user-set
threshold. Polling for file system sizes is done at user-set intervals.
Polling Interval. Polling occurs when the Subagent checks the file system for the requested information. The Subagent has two variations of polling: global and individual. Global polling for each entry in the table is controlled by the Polling Interval setting (in seconds).
Add a Row. The Add a Row field lets you add an additional row to the File System Monitor table. On a subsequent page, this row can be used to configure an additional string to search for in a specified log file.
Next Topic: Scenario C: Track and Restart Critical Applications
Previous Topic: Scenario A: Monitor Log Files