The Replasments Hentia

Nagios

One of the problems of those who must maintain a relatively high number of machines is the discovery, with subsequent diagnosis of the various problems (Software or hardware) that inevitably, sooner or later must be made.

There are basically two approaches to the problem:

1. hope for the best waiting for the "bang"
2. We monitor closely the various machines to reduce the number of "bang"

Since the first case, which is dangerous, let account only the number 2.
universe GNU / Linux there are a lot of applications to "simplify" the remote control of a few cars lately I have been talking on the applicator NAGIOS .

As we read on the official website :
“Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. It has been designed to run under the Linux operating system , but works fine under most *NIX variants as well. The monitoring daemon runs intermittent checks on hosts and services you specify using external “plugins” which return status information to Nagios. When problems are encountered, the daemon can send notifications out to administrative contacts in a variety of different ways (email, instant message, SMS, etc.). Current status information, historical logs, and reports can all be accessed via a web browser. ”

Dunque si tratta di un’architettura client / server to remotely monitor the status of a set of cars from the CPU load to the disk space, memory use of the number of processes.
The purpose of this is to prevent any problems or, at most, be able to "intercept" the problem before the users notice it. Although initial

The setup is a bit complicated, the web interface is simple and effective control.


A convenient tree graph informs us about the status of various servers and the services they host.

will shortly publish a detailed how-to on how to optimally configure Nagios.