Admins solve problems ranging from slow servers to failing applications. The first tool I reach for when I need to check on a server with shell access is Top.
Ethernet is so popular because it simply works and is inexpensive. However, the administration side looks a bit more complicated: For the network to run smoothly, the admin might need to make important decisions about the Spanning Tree protocol.
Ganglia is probably the most popular monitoring framework and tool, in that HPC, Big Data, and even cloud systems are using it. In this article, we show you how to install and configure Ganglia and get it up and running on a simple two-node system.