forked from munin-monitoring/munin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathntp_states
executable file
·190 lines (153 loc) · 6.52 KB
/
ntp_states
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
#!/usr/bin/perl -w
=head1 NAME
ntp_states - Plugin to monitor NTP states. States are the Select Field as
documented at http://www.eecis.udel.edu/~mills/ntp/html/decode.html#peer
=head1 CONFIGURATION
The following configuration parameters are used by this plugin:
[ntp_states]
env.lowercase - Lowercase hostnames after lookup
env.show_syspeer_stratum - Display the stratum of the system peer, field sys_peer_stratum
Set the variable env.lowercase to anything to lowercase hostnames.
=head2 DEFAULT CONFIGURATION
[ntp_states]
env.lowercase <undefined>
env.show_syspeer_stratum <undefined>
=head1 AUTHORS
Original author unknown. Rewritten by Kenyon Ralph <[email protected]>.
=head1 LICENSE
Same as munin.
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
use English qw( -no_match_vars );
use Munin::Plugin;
use strict;
use warnings;
use File::Spec;
use Net::DNS;
# Include /usr/local/sbin in the path to use the ntpq installed by
# ports on FreeBSD instead of the base system, which is probably
# older.
$ENV{'PATH'} = File::Spec->catdir(File::Spec->rootdir(), 'usr', 'local', 'sbin') . ":" . $ENV{'PATH'};
my %stateval = (
"reject" => 0,
"falsetick" => 1,
"excess" => 2,
"backup" => 3,
"outlyer" => 4,
"outlier" => 4,
"candidate" => 5,
"sys.peer" => 6,
"pps.peer" => 7,
"insane" => 8
);
my %peers_condition;
my $syspeer_stratum_value = 15;
my $resolver = Net::DNS::Resolver->new;
$resolver->tcp_timeout(5);
$resolver->udp_timeout(5);
# Returns a hash whose keys are peer IP addresses and values are
# condition numbers.
sub make_hash {
# ntpq -c associations output:
#ind assid status conf reach auth condition last_event cnt
#===========================================================
# 1 63933 931a yes yes none outlier sys_peer 1
# 2 63934 943a yes yes none candidate sys_peer 3
foreach my $line (`ntpq -c associations`) {
if ($line =~ m/^\s*\d+/) {
my (undef, undef, $assid, undef, undef, undef, undef, $condition_str, undef, undef) = split(/\s+/, $line);
chomp(my $peerinfo = `ntpq -n -c "readvar $assid srcadr"`);
$peerinfo =~ s/\s//g;
my ($peer_addr) = ($peerinfo =~ m/srcadr=(.*)/);
# some states get the last letter cut off in
# ntp version 4.2.4p8 (and probably others) in
# the associations output
if ($condition_str eq "candidat") {
$condition_str = "candidate";
}
if ($condition_str eq "falsetic") {
$condition_str = "falsetick";
}
# save the sys.peer's stratum if configured to graph it
if ($condition_str eq "sys.peer" and exists $ENV{"show_syspeer_stratum"}) {
chomp(my $stratum = `ntpq -n -c "readvar $assid stratum"`);
$stratum =~ s/\s//g;
($syspeer_stratum_value) = ($stratum =~ m/stratum=(.*)/);
}
if (exists $stateval{$condition_str}) {
$peers_condition{$peer_addr} = $stateval{$condition_str};
} else {
$peers_condition{$peer_addr} = 9;
}
}
}
}
# Takes an address and returns a pair: the field name, and the
# Internet hostname
sub make_names {
my $addr = shift;
my $host;
my $packet = $resolver->query($addr);
# Can use core perl routines (from the Socket module) to do
# the address -> hostname lookup in perls newer than 5.10.1
# with, but that's all I have to test with right now. So using
# libnet-dns-perl.
if ($packet) {
my @answer = $packet->answer;
foreach my $rr (@answer) {
if ("PTR" eq $rr->type) {
$host = $rr->ptrdname;
}
}
}
$host = defined $host ? $host : $addr;
my $hostname = $host;
my $fieldname = "peer_" . $hostname;
$fieldname = lc $fieldname if exists $ENV{"lowercase"};
$fieldname = clean_fieldname($fieldname);
return ($fieldname, $hostname);
}
if ($ARGV[0] and $ARGV[0] eq "autoconf") {
`ntpq -c help >/dev/null 2>/dev/null`;
if ($CHILD_ERROR eq "0") {
if (`ntpq -n -c peers | wc -l` > 0) {
print "yes\n";
exit 0;
} else {
print "no (ntpq -p returned no peers)\n";
exit 0;
}
} else {
print "no (ntpq not found)\n";
exit 0;
}
}
&make_hash;
if ($ARGV[0] and $ARGV[0] eq "config") {
print "graph_title NTP states\n";
print "graph_args --base 1000 --vertical-label state --lower-limit 0\n";
print "graph_category time\n";
print "graph_info These are graphs of the states of this system's NTP peers. The states translate as follows: 0=reject, 1=falsetick, 2=excess, 3=backup, 4=outlier, 5=candidate, 6=system peer, 7=PPS peer. See http://www.eecis.udel.edu/~mills/ntp/html/decode.html for more information on the meaning of these conditions. If show_syspeer_stratum is specified, the sys.peer stratum is also graphed.\n";
foreach my $addr (keys %peers_condition) {
my ($fieldname, $hostname) = &make_names($addr);
print "$fieldname.label $hostname\n";
}
# print config for the sys.peer's stratum if configured to graph it
if (exists $ENV{"show_syspeer_stratum"}) {
print "sys_peer_stratum.label sys.peer stratum\n";
print "sys_peer_stratum.draw LINE1\n";
print "sys_peer_stratum.colour 000000\n";
}
exit 0;
}
foreach my $addr (keys %peers_condition) {
my ($fieldname, $hostname) = &make_names($addr);
print "$fieldname.value ", $peers_condition{$addr}, "\n";
}
# include the sys.peer's stratum if configured to graph it
if (exists $ENV{"show_syspeer_stratum"} ) {
print "sys_peer_stratum.value ", $syspeer_stratum_value, "\n";
}
exit 0;