Using Foglight Agent Manager

Foglight Agent Manager (FglAM) is a client application that manages Foglight agents installed on monitored hosts.

The Agent Manager is a middleware application that:

• hosts agents
• manages agent lifecycle (such as start, stop, and restart)
• manages the connection to Foglight Cloud
• provides centralized services to agents

A Foglight agent is a component hosted by the Agent Manager that:

• collects data from monitored resources
• if necessary, manipulates data into the format required by Foglight Cloud
• submits the data to Foglight Cloud using the Agent Manager

The Agent Manager supplies a centralized communications link between Foglight Cloud and monitoring agents. It also provides a number of support services such as installation, upgrade, and the ability to configure agents. The Agent Manager needs to be downloaded and installed in the customer’s network.

This section covers the following key areas:

• Prerequisites for Foglight Agent Manager Installation
  
  • Typical Resource Requirements
• Installing Foglight Agent Manager

Prerequisites for Foglight Agent Manager Installation

Foglight Agent Manager uses minimal system resources, whether running on a monitored host or monitoring remotely. The amount used depends on a variety of factors including the number of agents running on the monitored host, the amount of data being collected, and whether Foglight Cloud is running.

Typical Resource Requirements

• CPU Usage:

  • Varies greatly by cartridge/agent, the amount of data being collected, and the complexity of the technology being monitored
  • Average is 4.8% CPU utilization

• RAM:

  • Varies greatly by cartridge/agent, the complexity of the technology being monitored, and Agent Manager configuration

  • Agent Manager base memory requirement is 256 MB. Additional memory may be required depending on the deployed agent types and instances.

    Following are the examples of agent package requirements:

    • Foglight for Infrastructure — 12 MB on deployment and 4 MB for each agent instance.
    • Foglight for VMware — 2560 MB on deployment.

• Storage: May use up to 1 GB of hard disk for installation, operation, and temporary data storage.

Following are the resources needed to monitor database agents:

Number of Agents	<5	<50	<100	<200	<400	<600	<800
CPUs (2.4GHz)*	1 core	4 cores	8 cores	8 cores	10 cores	12 cores	14 cores
RAM*	5GB	11GB	15GB	19GB	23GB	29GB	37GB
JVM Settings**	2048MB	7168MB	9216MB	13312MB	17408MB	23552MB	31744MB
Hard Drive Space	2GB	5GB	10GB	20GB	40GB	60GB	80GB

CPUs (2.4GHz)* - for a virtual machine the CPU reservation is highly recommended for better performance. The reservation is expressed in MHz.

RAM*- for a virtual machine the memory reservation is highly recommended for better performance.