/[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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Annotation of /fping+args.monitor

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Revision 1.2 - (hide 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 dpavlin 1.1 #!/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 dpavlin 1.2 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 dpavlin 1.1 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 dpavlin 1.2 my %want_host = map { $_ => 1 } @hosts; # hosts fping hasn't output yet
83 dpavlin 1.1
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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