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Annotated edit history of Nagios version 8, including all changes. View license author blame.
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5 AristotlePagaltzis 1 [NagiosĀ® | http://www.nagios.org/] 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] OperatingSystem, but works fine under most [Unix] 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], [IM], [SMS], etc.). Current status information, historical logs, and reports can all be accessed via a WebBrowser.
1 MattBrown 2
8 MattBrown 3 It used to go by the name ~NetSaint. See NagiosNotes for helpful tips.
1 MattBrown 4
5 AristotlePagaltzis 5 * Monitoring of network services ([SMTP], [POP3], [HTTP], [NNTP], Ping, etc.)
6 * Monitoring of host resources ([CPU] load, disk and memory usage, running processes, log files, etc.)
1 MattBrown 7 * Simple plugin design that allows users to easily develop their own host and service checks
8 * Ability to define network host hierarchy, allowing detection of and distinction between hosts that are down and those that are unreachable
5 AristotlePagaltzis 9 * Contact notifications when service or host problems occur and get resolved (via [Email], pager, or other user-defined method)
1 MattBrown 10 * Optional escalation of host and service notifications to different contact groups
11 * Ability to define event handlers to be run during service or host events for proactive problem resolution
12 * Support for implementing redundant and distributed monitoring servers
13 * External command interface that allows on-the-fly modifications to be made to the monitoring and notification behavior through the use of event handlers, the web interface, and third-party applications
14 * Retention of host and service status across program restarts
15 * Scheduled downtime for supressing host and service notifications during periods of planned outages
16 * Ability to acknowlege problems via the web interface
17 * Web interface for viewing current network status, notification and problem history, log file, etc.
18 * Simple authorization scheme that allows you restrict what users can see and do from the web interface
19 * Generates pretty network status maps
20
7 CraigBox 21 [Nagios] has many features that ~NetSaint lacks but the most important one is that it allows you to configure it using template based configuration files, This simplifies the configuration hugely and reduces the chance of mistakes. Your config for a server goes from this:''''
5 AristotlePagaltzis 22
23 <verbatim>
24 host[gatekeeper]=Gatekeeper (Main Cloverly Server);10.230.1.1;;check-host-alive;5;60;24x7;1;1;1;
25 </verbatim>
26
27 to this:''''
28
29 <verbatim>
1 MattBrown 30 define host{
31 use generic-host ; Name of host template to use
32 host_name gatekeeper
33 alias Gatekeeper (Main Cloverly Server)
34 address 10.230.1.1
35 max_check_attempts 3
36 notification_interval 120
37 notification_period 24x7
38 notification_options d,u,r
39 }
5 AristotlePagaltzis 40 </verbatim>
1 MattBrown 41
5 AristotlePagaltzis 42 Some downsides that I have encountered so far:
1 MattBrown 43
5 AristotlePagaltzis 44 * Very basic authentication method -- [Apache] htaccess files, does not integrate well with existing authentication systems
45 * The notifications take some setting up to ensure that you do not get flooded with [Email].
46
47 !! Screenshot
3 MattPurvis 48
5 AristotlePagaltzis 49 [http://images.freshmeat.net/screenshots/27961.png]
2 MattPurvis 50
5 AristotlePagaltzis 51 Courtesy of FreshMeat. See also [the official screenshots | http://www.nagios.org/screenshot.php].
7 CraigBox 52
53 !! Cool things built on Nagios
54
55 [GroundWork Open Source|http://www.groundworkopensource.com] is a full web-controllable monitoring suite, built on top of Nagios.

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