Chapter 2. Installing and Configuring Ganglia
If you’ve made it this far, it is assumed that you’ve decided to join the ranks of the Ganglia user base. Congratulations! We’ll have your Ganglia-user conspiracy to conquer the world kit shipped immediately. Until it arrives, feel free to read through this chapter, in which we show you how to install and configure the various Ganglia components. In this chapter, we cover the installation and configuration of Ganglia 3.1.x for some of the most popular operating systems, but these instructions should apply to later versions as well.
Installing Ganglia
As mentioned earlier, Ganglia is composed of three components: gmond, gmetad, and gweb. In this first section, we’ll cover the installation and basic setup of each component.
gmond
gmond stands for Ganglia Monitoring Daemon. It’s a lightweight service that must be installed on each node from which you want to have metrics collected. This daemon performs the actual metrics collection on each host using a simple listen/announce protocol to share the data it gleans with its peer nodes in the cluster. Using gmond, you can collect a lot of system metrics right out of the box, such as CPU, memory, disk, network, and data about active processes.
Requirements
gmond installation is straightforward, and the libraries it depends upon are installed by default on most modern Linux distributions (as of this writing, those libraries are libconfuse, pkgconfig, ...
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