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
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title xmlns="">Munin</title>
<link rel="stylesheet" href="../../libs/ubuntu-book.css" type="text/css" />
<link rel="home" href="index.html" title="Guida a Ubuntu Server" />
<link rel="up" href="monitoring.html" title="Capitolo 9. Monitoraggio" />
<link rel="prev" href="nagios.html" title="Nagios" />
<link rel="next" href="web-servers.html" title="Capitolo 10. Server web" />
<link rel="copyright" href="legal.html" title="Riconoscimenti e licenza" />
</head>
<link href="http://help.ubuntu-it.org/favicon.ico" rel="shortcut icon" />
<body>
<div id="page-border-left-repeat">
<div id="page-border-right-repeat">
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
try {
var pageTracker = _gat._getTracker("UA-8147493-2");
pageTracker._trackPageview();
} catch(err) {}</script>
<div id="page-border-top-repeat">
<div id="header">
<div id="header-navigation">
<ul>
<li>
<a href="http://www.ubuntu-it.org">Web</a>
</li>
<li>
<a href="http://wiki.ubuntu-it.org">Documentazione</a>
</li>
<li>
<a href="http://forum.ubuntu-it.org">Forum</a>
</li>
<li>
<a href="http://planet.ubuntu-it.org">Planet</a>
</li>
</ul>
</div>
<form action="http://help.ubuntu-it.org/11.04/ubuntu/search.php" id="cse-search-box">
<div>
<input type="text" name="s" size="28" title="search" />
<input type="submit" value="Cerca" title="search" />
</div>
</form>
</div>
</div>
<div>
<div id="bodyarea">
<div class="pagelocation"><a href="http://help.ubuntu-it.org/">Documentazione di Ubuntu</a> > <a href="http://help.ubuntu-it.org/11.04/ubuntu/index.html">Ubuntu 11.04</a> > <span class="breadcrumb-link"><a href="index.html">Guida a Ubuntu Server</a></span> > <span class="breadcrumb-link"><a href="monitoring.html">Monitoraggio</a></span> > <span class="breadcrumb-node">Munin</span></div>
<div xmlns="http://www.w3.org/1999/xhtml" class="sect1" title="Munin">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="munin"></a>Munin</h2>
</div>
</div>
</div>
<div class="sect2" title="Installazione">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="munin-installation"></a>Installazione</h3>
</div>
</div>
</div>
<p>Prima di installare <span class="application"><strong>Munin</strong></span> su <span class="emphasis"><em>server01</em></span>, è necessario installare <span class="application"><strong>apache2</strong></span>. La configurazione predefinita è sufficiente per poter eseguire un server <span class="application"><strong>munin</strong></span>. Per maggiori informazioni, consultare <a class="xref" href="httpd.html" title="HTTPD - Server web Apache2">la sezione chiamata «HTTPD - Server web Apache2»</a>.</p>
<p>Installare, su <span class="emphasis"><em>server01</em></span>, <span class="application"><strong>munin</strong></span>. In un terminale, inserire:</p>
<pre class="screen">
<span class="command"><strong>sudo apt-get install munin</strong></span>
</pre>
<p>Su <span class="emphasis"><em>server02</em></span>, installare il pacchetto <span class="application"><strong>munin-node</strong></span>:</p>
<pre class="screen">
<span class="command"><strong>sudo apt-get install munin-node</strong></span>
</pre>
</div>
<div class="sect2" title="Configurazione">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="munin-configuration"></a>Configurazione</h3>
</div>
</div>
</div>
<p>Su <span class="emphasis"><em>server01</em></span> modificare il file <code class="filename">/etc/munin/munin.conf</code> aggiungendo l'indirizzo IP di <span class="emphasis"><em>server02</em></span>:</p>
<pre class="programlisting">
## First our "normal" host.
[server02]
address 172.18.100.101
</pre>
<div class="note" title="Nota" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Nota]" src="../../libs/admon/note.png" />
</td>
<th align="left"></th>
</tr>
<tr>
<td align="left" valign="top">
<p>Sostituire <span class="emphasis"><em>server02</em></span> e <span class="emphasis"><em>172.18.100.101</em></span> con il nome host e con l'indirizzo IP del proprio server.</p>
</td>
</tr>
</table>
</div>
<p>Successivamente, configurare <span class="application"><strong>munin-node</strong></span> su <span class="emphasis"><em>server02</em></span>. Modificare il file <code class="filename">/etc/munin/munin-node.conf</code> per consentire l'accesso al <span class="emphasis"><em>server01</em></span>:</p>
<pre class="programlisting">
allow ^172\.18\.100\.100$
</pre>
<div class="note" title="Nota" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Nota]" src="../../libs/admon/note.png" />
</td>
<th align="left"></th>
</tr>
<tr>
<td align="left" valign="top">
<p>Sostituire <span class="emphasis"><em>^172\.18\.100\.100$</em></span> con l'indirizzo IP del proprio server <span class="application"><strong>munin</strong></span>.</p>
</td>
</tr>
</table>
</div>
<p>Riavviare <span class="application"><strong>munin-node</strong></span> su <span class="emphasis"><em>server02</em></span> per applicare le modifiche:</p>
<pre class="screen">
<span class="command"><strong>sudo /etc/init.d/munin-node restart</strong></span>
</pre>
<p>Infine, in un browser, inserire l'indirizzo <span class="emphasis"><em>http://server01/munin</em></span> per visualizzare grafici che rappresentano le informazioni dal pacchetto <span class="emphasis"><em>munin-plugins</em></span> standard per disco, rete, processi e sistema.</p>
<div class="note" title="Nota" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Nota]" src="../../libs/admon/note.png" />
</td>
<th align="left"></th>
</tr>
<tr>
<td align="left" valign="top">
<p>Poiché è una nuova installazione, potrebbe impiegare un po' di tempo affinché i grafici visualizzino qualche cosa di utile.</p>
</td>
</tr>
</table>
</div>
</div>
<div class="sect2" title="Plugin aggiuntivi">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="munin-plugins"></a>Plugin aggiuntivi</h3>
</div>
</div>
</div>
<p>Il pacchetto <span class="application"><strong>munin-plugins-extra</strong></span> contiene controlli per le prestazioni e per servizi come DNS, DHCP, Samba e altri. Per installare il pacchetto, in un terminale inserire:</p>
<pre class="screen">
<span class="command"><strong>sudo apt-get install munin-plugins-extra</strong></span>
</pre>
<p>Assicurarsi di installare il pacchetto sia sul server che su tutti i nodi.</p>
</div>
<div class="sect2" title="Riferimenti">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="munin-references"></a>Riferimenti</h3>
</div>
</div>
</div>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>Per maggiori informazioni, consultare il sito web di <a class="ulink" href="http://munin.projects.linpro.no/" target="_top">Munin</a>.</p>
</li>
<li class="listitem">
<p>In particolare, la pagina relativa <a class="ulink" href="http://munin.projects.linpro.no/wiki/Documentation" target="_top">alla documentazione</a> contiene informazioni su maggiori plugin, sulla scrittura di plugin, ecc..</p>
</li>
<li class="listitem">
<p>È anche disponibile un libro in tedesco da Open Source Press: <a class="ulink" href="https://www.opensourcepress.de/index.php?26&backPID=178&tt_products=152" target="_top">Munin Graphisches Netzwerk- und System-Monitoring</a>.</p>
</li>
<li class="listitem">
<p>
Another resource is the <a class="ulink" href="https://help.ubuntu.com/community/Munin" target="_top">Munin Ubuntu Wiki</a> page.
</p>
</li>
</ul>
</div>
</div>
</div>
<div xmlns="http://www.w3.org/1999/xhtml" class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="nagios.html"><img src="../../libs/navig/prev.png" alt="Indietro" /></a> </td>
<td width="20%" align="center">
<a accesskey="u" href="monitoring.html">
<img src="../../libs/navig/up.png" alt="Risali" />
</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="web-servers.html"><img src="../../libs/navig/next.png" alt="Avanti" /></a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">Nagios </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">
<img src="../../libs/navig/home.png" alt="Partenza" />
</a>
</td>
<td width="40%" align="right" valign="top"> Capitolo 10. Server web</td>
</tr>
</table>
</div>
</div>
</div>
<div id="page-border-bottom-repeat">
<div id="footer">
<div id="copyright">
Ubuntu e Canonical sono marchi registrati da Canonical Ltd.
</div>
</div>
</div>
<div id="page-border-right-top"></div>
<div id="page-border-right-bottom"></div>
</div>
<div id="page-border-left-top"></div>
<div id="page-border-left-bottom"></div>
</div>
<p></p>
</body>
</html>