1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
|
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Graphing Performance Info With MRTG</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
<meta name="keywords" content="Supervision, Icinga, Nagios, Linux">
<link rel="home" href="index.html" title="Icinga Version 1.0.2 Documentation">
<link rel="up" href="ch07.html" title="Chapter 7. Security and Performance Tuning">
<link rel="prev" href="icingastats.html" title="Using The Icingastats Utility">
<link rel="next" href="ch08.html" title="Chapter 8. Integration With Other Software">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<CENTER><IMG src="../images/logofullsize.png" border="0" alt="Icinga" title="Icinga"></CENTER>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr><th colspan="3" align="center">Graphing Performance Info With MRTG</th></tr>
<tr>
<td width="20%" align="left">
<a accesskey="p" href="icingastats.html">Prev</a> </td>
<th width="60%" align="center">Chapter 7. Security and Performance Tuning</th>
<td width="20%" align="right"> <a accesskey="n" href="ch08.html">Next</a>
</td>
</tr>
</table>
<hr>
</div>
<div class="section" title="Graphing Performance Info With MRTG">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="mrtggraphs"></a><a name="mrtg_graphs"></a>Graphing Performance Info With MRTG</h2></div></div></div>
<p><span class="bold"><strong>Introduction</strong></span></p>
<p>The <a class="link" href="icingastats.html" title="Using The Icingastats Utility">icingastats</a> utility allows you to graph various Icinga performance
statistics over time using <a class="link" href="http://oss.oetiker.ch/mrtg/" target="_top">MRTG</a>. This is important because it can help
you:</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>Ensure Icinga is operating efficiently</p>
</li>
<li class="listitem">
<p>Locate problem areas in the monitoring process</p>
</li>
<li class="listitem">
<p>Observe the performance impacts of changes in your Icinga configuration</p>
</li>
</ul></div>
<p><span class="bold"><strong>Sample MRTG Configuration</strong></span></p>
<p>Sample MRTG configuration file snippets for graphing various Icinga performance statistics can be found in the
<span class="emphasis"><em>mrtg.cfg</em></span> file located in the <span class="emphasis"><em>sample-config/</em></span> subdirectory of the Icinga
distribution. You can create graphs of other performance information if you'd like - the samples just provide you with a good
starting point.</p>
<p>Once you copy these sample entries into your MRTG config file (/etc/mrtg/mrtg.cfg) you should have some new graphs the
next time MRTG runs.</p>
<p><span class="bold"><strong>Example Graphs</strong></span></p>
<p>We'll describe what a few of the sample MRTG graphs mean and what they can be used for...</p>
<div class="informaltable">
<table border="0">
<colgroup>
<col>
<col>
</colgroup>
<tbody>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Active Host Checks</strong></span> - This graph shows how may
active host checks (regularly scheduled and on-demand) have occurred over time. Useful for understanding:</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="hostchecks.html" title="Host Checks">Host checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="dependencychecks.html" title="Predictive Dependency Checks">Predictive host dependency checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="cachedchecks.html" title="Cached Checks">Cached checks</a>
</p>
</li>
</ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-activehostchecks.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Active Service Checks</strong></span> - This graph shows how
may active service checks (reguarly scheduled and on-demand) have occurred over time. Useful for understanding:</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="servicechecks.html" title="Service Checks">Service checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="dependencychecks.html" title="Predictive Dependency Checks">Predictive service dependency checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="cachedchecks.html" title="Cached Checks">Cached checks</a>
</p>
</li>
</ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-activeservicechecks.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Cached Host and Service Checks</strong></span> - This graph
shows how may cached host and service checks have occurred over time. Useful for understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="cachedchecks.html" title="Cached Checks">Cached checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="dependencychecks.html" title="Predictive Dependency Checks">Predictive host and service dependency checks</a>
</p>
</li>
</ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-cachedchecks.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Passive Host and Service Checks</strong></span> - This graph
shows how may passive host and service checks have occurred over time. Useful for understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>
<a class="link" href="passivechecks.html" title="Passive Checks">Passive checks</a>
</p>
</li></ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-passivechecks.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Hosts/Services Actively Checked</strong></span> - This graph
shows how many (of the total number of) hosts and services were <span class="emphasis"><em>last</em></span> checked actively over time.
Useful for understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>
<a class="link" href="activechecks.html" title="Active Checks">Active checks</a>
</p>
</li></ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-activelychecked.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Hosts/Services Passively Checked</strong></span> - This graph
shows how many (of the total number of) hosts and services were <span class="emphasis"><em>last</em></span> checked passively over time.
Useful for understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>
<a class="link" href="passivechecks.html" title="Passive Checks">Passive checks</a>
</p>
</li></ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-passivelychecked.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Average Service Check Latency and Execution
Time</strong></span> - This graph shows average service check latency and execution times over time. Useful for
understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="servicechecks.html" title="Service Checks">Service checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="tuning.html" title="Tuning Icinga For Maximum Performance">Performance tuning</a>
</p>
</li>
</ul></div> <p>Consistently high latencies can be an indication that one of more of the following variables
need tweaking:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="configmain.html#configmain-max_concurrent_checks">max_concurrent_checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="configmain.html#configmain-check_result_reaper_frequency">check_result_reaper_frequency</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="configmain.html#configmain-max_check_result_reaper_time">max_check_result_reaper_time</a>
</p>
</li>
</ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-serviceperfstats.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Average Service State Change</strong></span> - This graph shows
the average percent state change (a measure of volatility) for services over time, broken down by services that were
last checked either actively or passively. Useful for understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>
<a class="link" href="flapping.html" title="Detection and Handling of State Flapping">Flap detection</a>
</p>
</li></ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-servicestatechange.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Average Host Check Latency and Execution Time</strong></span> -
This graph shows average host check latency and execution times over time. Useful for understanding:</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="hostchecks.html" title="Host Checks">Host checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="tuning.html" title="Tuning Icinga For Maximum Performance">Performance tuning</a>
</p>
</li>
</ul></div> <p>Consistently high latencies can be an indication that one of more of the following variables
need tweaking:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="configmain.html#configmain-max_concurrent_checks">max_concurrent_checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="configmain.html#configmain-check_result_reaper_frequency">check_result_reaper_frequency</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="configmain.html#configmain-max_check_result_reaper_time">max_check_result_reaper_time</a>
</p>
</li>
</ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-hostperfstats.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>Average Host State Change</strong></span> - This graph shows
the average percent state change (a measure of volatility) for hosts over time, broken down by hosts that were last
checked either actively or passively. Useful for understanding:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>
<a class="link" href="flapping.html" title="Detection and Handling of State Flapping">Flap detection</a>
</p>
</li></ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-hoststatechange.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top">
<p> <span class="bold"><strong>External Commands</strong></span> - This graph shows how may
external commands have been processed by the Icinga daemon over time. Unless you're processing a large number of
external commands (as in the case with distributed monitoring setups), this graph may appear mostly empty. Monitoring
external commands can be useful for understanding the impacts of:</p> <div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="passivechecks.html" title="Passive Checks">Passive checks</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="distributed.html" title="Distributed Monitoring">Distributed monitoring</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="redundancy.html" title="Redundant and Failover Network Monitoring">Redundant/failover monitoring</a>
</p>
</li>
</ul></div>
</td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-externalcommands.png"></span> </p></td>
</tr>
<tr>
<td align="left" valign="top"><p> <span class="bold"><strong>External Command Buffers</strong></span> - This graph shows how
many external command buffer slots are in use over time. If the number of used buffers is near the number of available
buffers on a regular basis, it is likely you need to increase the available <a class="link" href="configmain.html#configmain-external_command_buffer_slots">external command buffer slots</a>. Each buffer slot can hold one
external command. Buffers are used for temporarily holding external commands from the time they are read from the <a class="link" href="configmain.html#configmain-command_file">external command file</a> to the time they are processed by the Icinga
daemon.</p></td>
<td align="left" valign="top"><p> <span class="inlinemediaobject"><img src="../images/mrtg-commandbuffers.png"></span> </p></td>
</tr>
</tbody>
</table>
</div>
<a class="indexterm" name="id2006488"></a>
</div>
<div class="navfooter">
<hr>
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left">
<a accesskey="p" href="icingastats.html">Prev</a> </td>
<td width="20%" align="center"><a accesskey="u" href="ch07.html">Up</a></td>
<td width="40%" align="right"> <a accesskey="n" href="ch08.html">Next</a>
</td>
</tr>
<tr>
<td width="40%" align="left" valign="top">Using The Icingastats Utility </td>
<td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td>
<td width="40%" align="right" valign="top"> Chapter 8. Integration With Other Software</td>
</tr>
</table>
</div>
<P class="copyright">© 2009-2010 Icinga Development Team, http://www.icinga.org</P>
</body>
</html>
|
