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
|
#!/bin/sh
#
# Plugin to monitor the load average on a system.
#
# Usage: Link or copy into /etc/munin/node.d/
#
# Magic markers (optional - only used by munin-config and some
# installation scripts):
#
# $Log$
# Revision 1.3.2.1 2005/01/28 14:51:22 lupe
# Add graph_info and some filed.info
#
# Revision 1.4 2005/01/28 14:47:31 lupe
# Add graph_info and some filed.info
#
# Revision 1.3 2004/05/20 19:02:36 jimmyo
# Set categories on a bunch of plugins
#
# Revision 1.2 2004/01/15 16:58:10 jimmyo
# FreeBSD-plugin load bugfix from Robert Lindgren (SF#865928).
#
# Revision 1.1 2004/01/02 18:50:00 jimmyo
# Renamed occurrances of lrrd -> munin
#
# Revision 1.1.1.1 2004/01/02 15:18:07 jimmyo
# Import of LRRD CVS tree after renaming to Munin
#
# Revision 1.3 2003/11/07 17:43:16 jimmyo
# Cleanups and log entries
#
#
#
#%# family=auto
#%# capabilities=autoconf
# If run with the "autoconf"-parameter, give our opinion on wether we
# should be run on this system or not. This is optinal, and only used by
# munin-config. In the case of this plugin, we should most probably
# always be included.
if [ "$1" = "autoconf" ]; then
if [ -x /sbin/sysctl ]; then
/sbin/sysctl vm.loadavg > /dev/null
if [ $? = "0" ]; then
echo yes
exit 0
else
echo no
exit 1
fi
else
echo no
exit 1
fi
fi
# If run with the "config"-parameter, give out information on how the
# graphs should look.
if [ "$1" = "config" ]; then
# The host name this plugin is for. (Can be overridden to have
# one machine answer for several)
# The title of the graph
echo 'graph_title Load average'
# Arguments to "rrdtool graph". In this case, tell it that the
# lower limit of the graph is '0', and that 1k=1000 (not 1024)
echo 'graph_args --base 1000 -l 0'
# The Y-axis label
echo 'graph_vlabel load'
# We want Cur/Min/Avg/Max unscaled (i.e. 0.42 load instead of
# 420 milliload)
echo 'graph_noscale true'
# The category of the plugin. Defaults to "other".
echo 'graph_category system'
# The fields. "label" is used in the legend. "label" is the only
# required subfield.
echo 'load.label load'
# These two are optional. They are only used if you have
# configured your munin to tell a Nagios-server about any
# problems
echo 'load.warning 10'
echo 'load.critical 120'
# This one is purely to add an explanation to the web page. The first
# one is for the graph itself, while the second one is for the field
# "load".
echo 'graph_info The load average of the machine describes how many processes are in the run-queue (scheduled to run "immediately").'
echo 'load.info Average load for the five minutes.'
# Last, if run with the "config"-parameter, quit here (don't
# display any data)
exit 0
fi
# If not run with any parameters at all (or only unknown ones), do the
# real work - i.e. display the data. Almost always this will be
# "value" subfield for every data field.
echo -n "load.value "
/sbin/sysctl vm.loadavg | cut -f3 -d' '
# How could this plugin have been written in its simplest form?
# Something like this:
#
# ---------------------
# #!/bin/sh
#
# if [ "$1" = "config" ]; then
# echo "graph_title Load average"
# echo 'graph_args --base 1000 -l 0'
# echo 'graph_vlabel load'
# echo "load.label load"
# exit 0
# fi
# echo -n "load.value "
# cut -f1 -d' ' < /proc/loadavg
# ---------------------
#
# Except for the Nagios-warnings (which most people don't have any need
# for) and things used by installation scripts and munin-config (which
# you don't need if you don't plan on submitting your plugin to the
# pacakge), the two versions will work identically.
|
