/[mon-modules]/fping+args.monitor
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /fping+args.monitor

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Revision 1.2 - (show annotations)
Wed Jul 10 09:26:32 2002 UTC (16 years, 11 months ago) by dpavlin
Branch: MAIN
Changes since 1.1: +14 -2 lines
supports format: username[:password]@hostname[/arguments]

1 #!/usr/bin/perl
2 #
3 # Return a list of hosts which not reachable via ICMP echo
4 #
5 # Jim Trocki, trockij@transmeta.com
6 #
7 # $Id: fping.monitor 1.7 Mon, 27 Aug 2001 14:22:45 -0400 trockij $
8 #
9 # Copyright (C) 1998, Jim Trocki
10 #
11 # This program is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License as published by
13 # the Free Software Foundation; either version 2 of the License, or
14 # (at your option) any later version.
15 #
16 # This program is distributed in the hope that it will be useful,
17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 # GNU General Public License for more details.
20 #
21 # You should have received a copy of the GNU General Public License
22 # along with this program; if not, write to the Free Software
23 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #
25 use strict;
26
27 use Getopt::Std;
28
29 my %opt;
30 getopts ("ahr:s:t:T", \%opt);
31
32 sub usage
33 {
34 print <<EOF;
35 usage: fping.monitor [-a] [-r num] [-s num] [-t num] [-T] host [host...]
36
37 -a only report failure if all hosts are unreachable
38 -r num retry "num" times for each host before reporting failure
39 -s num consider hosts which respond in over "num" msecs failures
40 -t num wait "num" msecs before sending retries
41 -T traceroute to each failed host. CAUTION: this may cause
42 this monitor to hang for a very long time
43
44 EOF
45
46 exit;
47 }
48
49 usage if ($opt{"h"});
50
51 my $TIMEOUT = $opt{"t"} || 2000;
52 my $RETRIES = $opt{"r"} || 3;
53 my $CMD = "fping -e -r $RETRIES -t $TIMEOUT";
54 my $START_TIME = time;
55 my $END_TIME;
56
57 exit 0 if (@ARGV == 0);
58
59 my @hosts;
60
61 # you can use hosts in format host:optional configuration parameters and
62 # this part will strip everything after hostname
63 foreach (@ARGV) {
64 if (m/^[^:]+:?[^\@]*\@([^\/]+)\/?.*/) {
65 push @hosts,$1;
66 } else {
67 push @hosts,$_;
68 }
69 }
70
71 open (IN, "$CMD @hosts 2>&1 |") ||
72 die "could not open pipe to fping: $!\n";
73
74 my @unreachable;
75 my @alive;
76 my @slow;
77 my @other_prob; # details for other per-host problems
78 my @error; # other errors which I'll give non-zero exit for
79 my @icmp; # ICMP messages output by fping
80 my %addr_unknown;
81
82 my %want_host = map { $_ => 1 } @hosts; # hosts fping hasn't output yet
83
84 while (<IN>)
85 {
86 chomp;
87 if (/^(\S+).*unreachable/)
88 {
89 push (@unreachable, $1);
90 delete $want_host{$1}
91 or push @error, "unreachable host `$1' wasn't asked for";
92 }
93
94 elsif (/^(\S+) is alive \((\S+)/)
95 {
96 delete $want_host{$1}
97 or push @error, "reachable host `$1' wasn't asked for";
98
99 if ($opt{"s"} && $2 > $opt{"s"})
100 {
101 push (@slow, [$1, $2]);
102 }
103
104 else
105 {
106 push (@alive, [$1, $2]);
107 }
108 }
109
110 elsif (/^(\S+)\s+address\s+not\s+found/)
111 {
112 $addr_unknown{$1} = 1;
113 push @other_prob, "$1 address not found";
114 push @unreachable, $1;
115 delete $want_host{$1}
116 or push @error, "unknown host `$1' wasn't asked for";
117 }
118
119 # ICMP Host Unreachable from 1.2.3.4 for ICMP Echo sent to 2.4.6.8
120 # (among others)
121
122 elsif (/^ICMP (.*) for ICMP Echo sent to (\S+)/)
123 {
124 push @icmp, $_;
125 }
126
127 else
128 {
129 push @error, "unidentified output from fping: [$_]";
130 }
131 }
132
133 for my $host (keys %want_host) {
134 push @other_prob, "$host not listed in fping's output";
135 push @unreachable, $host;
136 }
137
138 close (IN);
139
140 $END_TIME = time;
141
142 my $retval = $? >> 8;
143
144 if ($retval < 3)
145 {
146 # do nothing
147 }
148
149 elsif ($retval == 3)
150 {
151 push @error, "fping: invalid cmdline arguments [$CMD @ARGV]";
152 }
153
154 elsif ($retval == 4)
155 {
156 push @error, "fping: system call failure";
157 }
158
159 else
160 {
161 push @error, "unknown return code ($retval) from fping";
162 }
163
164 if (@error) {
165 print "unusual errors\n";
166 }
167 else {
168 my @fail = sort @unreachable, map { $_->[0] } @slow;
169 # This line is intentionally blank if there are no failures.
170 print "@fail\n";
171 }
172
173 print "\n";
174 print "start time: " . localtime ($START_TIME) . "\n";
175 print "end time : " . localtime ($END_TIME) . "\n";
176 print "duration : " . ($END_TIME - $START_TIME) . " seconds\n";
177
178 if (@error != 0)
179 {
180 print <<EOF;
181
182 ------------------------------------------------------------------------------
183 unusual errors
184 ------------------------------------------------------------------------------
185 EOF
186 print join ("\n", @error), "\n";
187 }
188
189 if (@unreachable != 0)
190 {
191 print <<EOF;
192
193 ------------------------------------------------------------------------------
194 unreachable hosts
195 ------------------------------------------------------------------------------
196 EOF
197 print join ("\n", @unreachable), "\n";
198
199 print "\nother problems:\n", join "\n", @other_prob, ''
200 if @other_prob;
201 }
202
203 if (@icmp != 0)
204 {
205 print <<EOF;
206
207 ------------------------------------------------------------------------------
208 ICMP messages
209 ------------------------------------------------------------------------------
210 EOF
211 print join "\n", @icmp, '';
212 }
213
214
215 if (@slow != 0)
216 {
217 print <<EOF;
218
219 ------------------------------------------------------------------------------
220 slow hosts (response time which exceeds $opt{s}ms)
221 ------------------------------------------------------------------------------
222 EOF
223
224 foreach my $host (@slow)
225 {
226 printf ("%-40s %.2f ms\n", @{$host});
227 }
228 }
229
230
231
232 if (@alive != 0)
233 {
234 print <<EOF;
235
236 ------------------------------------------------------------------------------
237 reachable hosts rtt
238 ------------------------------------------------------------------------------
239 EOF
240
241 for (my $i = 0; $i < @alive; $i++)
242 {
243 printf ("%-40s %.2f ms\n", @{$alive[$i]});
244 }
245 }
246
247 #
248 # traceroute
249 #
250 if ($opt{"T"} && @unreachable)
251 {
252 my $header_output = 0;
253 foreach my $host (@unreachable)
254 {
255 next if $addr_unknown{$host};
256 print $header_output++ ? "\n" : <<EOF;
257
258 ------------------------------------------------------------------------------
259 traceroute to unreachable hosts
260 ------------------------------------------------------------------------------
261 EOF
262 system ("traceroute -w 3 $host 2>&1");
263 }
264 }
265
266 exit 1 if @error;
267
268 #
269 # fail only if all hosts do not respond
270 #
271 if ($opt{"a"})
272 {
273 exit(@alive ? 0 : 1);
274 }
275
276 exit 1 if (@slow != 0);
277
278 exit $retval;

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