allow adjusting graph limits
[upsgraph] / upsgraph.pl
1 #!/usr/bin/perl -w
2
3 if ((@ARGV != 1) && (@ARGV != 2)) {
4 print STDERR "Syntax: ${0} configfile [uid]\n";
5 exit(1);
6 }
7
8 use Net::SNMP;
9 use IO::Socket::INET;
10 use RRDs;
11 use Data::Dumper;
12
13 $UPSGRAPH::outdir = "";
14 $UPSGRAPH::step = 60;
15 $UPSGRAPH::keep = (370*24*60*60)/$UPSGRAPH::step;
16 $UPSGRAPH::hosts = ();
17
18 do $ARGV[0] or die "can't read config: $!";
19
20 my $outdir = $UPSGRAPH::outdir;
21 my $step = $UPSGRAPH::step;
22 my $keep = $UPSGRAPH::keep;
23 my $hosts = $UPSGRAPH::hosts;
24
25 sub rrdcreate(@) {
26 my $newrrd = shift;
27 my $field = shift;
28 my $vars = shift;
29 my $start = shift;
30
31 my @cmd = ("${newrrd}", "--step=${step}");
32
33 if (defined($start)) {
34 push @cmd, "--start=${start}";
35 }
36
37 push @cmd, "DS:${field}:GAUGE:600:" .
38 $vars->{$field}->{'min'} . ":" .
39 $vars->{$field}->{'max'} . " ";
40
41 push @cmd, "RRA:AVERAGE:0.5:1:${keep}";
42
43 RRDs::create(@cmd);
44 if (RRDs::error) {
45 print "Error while creating: " . RRDs::error . "\n";
46 exit 1;
47 }
48 }
49
50 sub fetch_snmp(@) {
51 my $address = shift;
52 my $community = shift;
53 my $oid = shift;
54
55 (my $session, my $error) = Net::SNMP->session(Hostname => $address,
56 Community => $community);
57
58 if (!$session) {
59 print STDERR "session error: $error";
60 }
61
62 $session->translate(0);
63
64 my $result = $session->get_request($oid);
65
66 $session->close;
67
68 return undef if (!defined($result));
69
70 $result->{$oid};
71 }
72
73 sub fetch_tcp(@) {
74 my $address = shift;
75 my $port = shift;
76
77 my $sock = IO::Socket::INET->new(PeerAddr => $address,
78 PeerPort => $port,
79 Proto => 'tcp',
80 Timeout => 1);
81
82 return undef if (!$sock);
83
84 chomp(my $value = <$sock>);
85
86 close($sock);
87
88 if (!$value) {
89 return undef;
90 }
91
92 $value=~ s/\s//g;
93
94 $value;
95 }
96
97 if ($> == 0) {
98 if (@ARGV != 2) {
99 print STDERR "Running as root, please provide UID as 2th argument!\n";
100 exit(1);
101 }
102
103 print "Running as root, switching to ".$ARGV[1]."\n";
104 $< = $> = $ARGV[1];
105 }
106
107 foreach my $host (@$hosts) {
108 my $rrdfile = $host->{'rrdfile'};
109
110 if (-e "${rrdfile}") {
111 print "Reading old ${rrdfile} to preserve data...\n";
112
113 my $rrdinfo = RRDs::info("${rrdfile}");
114 if (RRDs::error) {
115 print "Error while getting info: " . RRDs::error . "\n";
116 exit 1;
117 }
118
119 (my $start, my $ostep, my $names, my $data) =
120 RRDs::fetch("${rrdfile}",
121 "-s " . (time() - ($rrdinfo->{'rra[0].rows'} * $rrdinfo->{'step'})),
122 "AVERAGE");
123
124 if (RRDs::error) {
125 print "Error while fetching data: " . RRDs::error . "\n";
126 exit 1;
127 }
128
129 foreach my $field (@$names) {
130 if (! -e "${rrdfile}.${field}") {
131 rrdcreate("${rrdfile}.${field}",
132 "${field}",
133 $host->{'vars'},
134 (${start}-${ostep}));
135 }
136 }
137
138 my $pos = $start;
139 foreach my $line (@$data) {
140 foreach my $field (@$names) {
141 my $val = shift (@$line);
142 $val = 'U' if (!defined($val));
143
144 RRDs::update("${rrdfile}.${field}", "${pos}:${val}");
145 if (RRDs::error) {
146 print "Can't insert data: " . RRDs::error . "\n";
147 exit 1;
148 }
149
150 }
151
152 $pos += $ostep;
153
154 if ((($pos-$start)/$ostep) == $#$data) {
155 last;
156 }
157 }
158
159 rename("${rrdfile}", "${rrdfile}.old") or die "Can't rename old file: $!\n";
160 }
161
162 foreach my $field (@{$host->{'fields'}}) {
163 if (! -e "${rrdfile}.${field}") {
164 print "Creating ${rrdfile}.${field}...\n";
165 rrdcreate("${rrdfile}.${field}",
166 "${field}",
167 $host->{'vars'});
168 }
169
170 my $rrdinfo = RRDs::info("${rrdfile}.${field}");
171 if (RRDs::error) {
172 print "Error while getting info: " . RRDs::error . "\n";
173 exit 1;
174 }
175
176 if (defined($rrdinfo->{"ds[${field}].min"})) {
177 if ($rrdinfo->{"ds[${field}].min"} ne $host->{'vars'}->{$field}->{'min'}) {
178 RRDs::tune("${rrdfile}.${field}","-i",$field.":".$host->{'vars'}->{$field}->{'min'});
179 }
180 } else {
181 if ($host->{'vars'}->{$field}->{'min'} ne 'U') {
182 RRDs::tune("${rrdfile}.${field}","-i",$field.":".$host->{'vars'}->{$field}->{'min'});
183 }
184 }
185
186 if (RRDs::error) {
187 print "Error while setting min: " . RRDs::error . "\n";
188 exit 1;
189 }
190
191 if (defined($rrdinfo->{"ds[${field}].max"})) {
192 if ($rrdinfo->{"ds[${field}].max"} ne $host->{'vars'}->{$field}->{'max'}) {
193 print "Max differs\n";
194 RRDs::tune("${rrdfile}.${field}","-a",$field.":".$host->{'vars'}->{$field}->{'max'});
195 }
196 } else {
197 if ($host->{'vars'}->{$field}->{'max'} ne 'U') {
198 RRDs::tune("${rrdfile}.${field}","-a",$field.":".$host->{'vars'}->{$field}->{'max'});
199 }
200 }
201
202 if (RRDs::error) {
203 print "Error while setting max: " . RRDs::error . "\n";
204 exit 1;
205 }
206
207 if ($rrdinfo->{'rra[0].rows'} != $keep) {
208 print "Resizing ${rrdfile}.${field} from " . $rrdinfo->{'rra[0].rows'} .
209 " to ${keep} samples.\n";
210
211 (my $start, my $ostep, my $names, my $data) =
212 RRDs::fetch("${rrdfile}.${field}",
213 "-s " . (time() - ($rrdinfo->{'rra[0].rows'} * $rrdinfo->{'step'})),
214 "AVERAGE");
215
216 if (RRDs::error) {
217 print "Error while fetching data: " . RRDs::error . "\n";
218 exit 1;
219 }
220
221 rrdcreate("${rrdfile}.${field}.new",
222 "${field}",
223 $host->{'vars'},
224 (${start}-${ostep}));
225
226 print "Preserving data since " . localtime($start) . "\n";
227
228 my $pos = $start;
229 foreach my $line (@$data) {
230 my $vline = "${pos}";
231
232 foreach my $val (@$line) {
233 $val = 'U' if (!defined($val));
234 $vline .= ":${val}";
235 }
236 RRDs::update("${rrdfile}.${field}.new", $vline) or die "Can't insert data\n";
237
238 if (RRDs::error) {
239 print "Error while updating: " . RRDs::error . "\n";
240 exit 1;
241 }
242 $pos += $ostep;
243
244 if ((($pos-$start)/$ostep) == $#$data) {
245 last;
246 }
247 }
248
249 rename("${rrdfile}.${field}", "${rrdfile}.${field}.old") or die "Can't rename old file: $!\n";
250 rename("${rrdfile}.${field}.new", "${rrdfile}.${field}") or die "Can't rename new file: $!\n";
251
252 $rrdinfo = RRDs::info("${rrdfile}.${field}");
253 if (RRDs::error) {
254 print "Error while getting info: " . RRDs::error . "\n";
255 exit 1;
256 }
257
258 if ($rrdinfo->{'rra[0].rows'} != $keep) {
259 print "Failed!\n";
260 exit 1;
261 }
262 }
263 }
264 }
265
266 my $child = fork();
267
268 die "fork failed!" if (!defined($child));
269
270 exit 0 if ($child != 0);
271
272 while(1) {
273 open(HTML, ">${outdir}/index.html.new");
274
275 print HTML '<html><head><meta http-equiv="refresh" content="60"/><meta http-equiv="cache-control" content="no-cache"/><meta http-equiv="pragma" content="no-cache"/><meta http_equiv="expires" content="Sat, 26 Jul 1997 05:00:00 GMT"/><title>Status</title></head>';
276 print HTML '<body bgcolor="#ffffff">';
277
278 foreach my $host (@$hosts) {
279 print HTML "[<a href=\"#".${host}->{'name'}."\">".${host}->{'name'}."</a>]&nbsp;";
280 }
281 print HTML "<br>\n";
282
283 foreach my $host (@$hosts) {
284 print HTML "<br>\n";
285 print HTML "<a name=\"".${host}->{'name'}."\"></a>\n";
286 my $vars = $host->{'vars'};
287 my $rrdfile = $host->{'rrdfile'};
288 my $hostname = $host->{'name'};
289
290 foreach my $var (@{$host->{'fields'}}) {
291 delete $vars->{$var}->{'value'};
292
293 my $result;
294
295 if ((!defined($vars->{$var}->{'proto'})) ||
296 ($vars->{$var}->{'proto'} eq '') ||
297 ($vars->{$var}->{'proto'} eq 'snmp')) {
298 $result = fetch_snmp($host->{'address'}, $host->{'community'}, $vars->{$var}->{'oid'});
299 } elsif ($vars->{$var}->{'proto'} eq 'tcp') {
300 $result = fetch_tcp($host->{'address'}, $vars->{$var}->{'port'});
301 }
302
303 next unless (defined $result);
304
305 $vars->{$var}->{'value'} = $result;
306 if (defined($vars->{$var}->{'factor'})) {
307 $vars->{$var}->{'value'} *= $vars->{$var}->{'factor'};
308 }
309 }
310
311 foreach my $var (@{$host->{'fields'}}) {
312 if (!(defined($vars->{$var}->{'value'}))) {
313 $vars->{$var}->{'value'} = 'U';
314 }
315 RRDs::update("${rrdfile}.${var}", "N:" . $vars->{$var}->{'value'});
316 }
317 if (RRDs::error) {
318 print "Error while updating: " . RRDs::error . "\n";
319 }
320
321 foreach my $var (@{$host->{'fields'}}) {
322 my @graphdef = ("-t", $hostname." - ".$vars->{$var}->{'name'}, "DEF:${var}=${rrdfile}.${var}:${var}:AVERAGE", "LINE1:${var}#FF0000");
323 (my $averages, my $width, my $height) =
324 RRDs::graph("${outdir}/${hostname}.${var}.png.new",
325 "-w", "720", @graphdef);
326
327 if (RRDs::error) {
328 print "Error while graphing: " . RRDs::error . "\n";
329 } else {
330 rename("${outdir}/${hostname}.${var}.png.new", "${outdir}/${hostname}.${var}.png");
331 }
332
333 print HTML "<a href=\"${hostname}.${var}.html\"><img src=\"${hostname}.${var}.png\" width=\"${width}\" height=\"${height}\" border=\"0\"></a><br>\n";
334
335 open (HTML2, ">${outdir}/${hostname}.${var}.html.new");
336 print HTML2 "<html><head><title>" . $vars->{$var}->{'name'} . "</title></head>";
337 print HTML2 '<body bgcolor="#ffffff">';
338
339
340 push @graphdef, "VDEF:min=${var},MINIMUM";
341 push @graphdef, "GPRINT:min:Minimum\\: %.2lf";
342
343 push @graphdef, "VDEF:avg=${var},AVERAGE";
344 push @graphdef, "GPRINT:avg:Average\\: %.2lf";
345
346 push @graphdef, "VDEF:max=${var},MAXIMUM";
347 push @graphdef, "GPRINT:max:Maximum\\: %.2lf";
348
349 push @graphdef, "VDEF:cur=${var},LAST";
350 push @graphdef, "GPRINT:cur:Current\\: %.2lf";
351
352 ($averages, $width, $height) =
353 RRDs::graph("${outdir}/${hostname}.${var}.long.png.new",
354 "-w", "1008", @graphdef);
355
356 if (RRDs::error) {
357 print "Error while graphing: " . RRDs::error . "\n";
358 } else {
359 rename("${outdir}/${hostname}.${var}.long.png.new", "${outdir}/${hostname}.${var}.long.png");
360 }
361
362 print HTML2 "<img src=\"${hostname}.${var}.long.png\" width=\"${width}\" height=\"${height}\"><br>";
363
364 ($averages, $width, $height) =
365 RRDs::graph("${outdir}/${hostname}.${var}.week.png.new",
366 "-w", "1008", "-e", "now", "-s", "end-1w", @graphdef);
367
368 if (RRDs::error) {
369 print "Error while graphing: " . RRDs::error . "\n";
370 } else {
371 rename("${outdir}/${hostname}.${var}.week.png.new", "${outdir}/${hostname}.${var}.week.png");
372 }
373
374 print HTML2 "<img src=\"${hostname}.${var}.week.png\" width=\"${width}\" height=\"${height}\"><br>";
375
376 ($averages, $width, $height) =
377 RRDs::graph("${outdir}/${hostname}.${var}.year.png.new",
378 "-w", "1008", "-e", "now", "-s", "end-1y", @graphdef);
379
380 if (RRDs::error) {
381 print "Error while graphing: " . RRDs::error . "\n";
382 } else {
383 rename("${outdir}/${hostname}.${var}.year.png.new", "${outdir}/${hostname}.${var}.year.png");
384 }
385
386 print HTML2 "<img src=\"${hostname}.${var}.year.png\" width=\"${width}\" height=\"${height}\"><br>";
387
388 print HTML2 "</body></html>\n";
389 close(HTML2);
390 rename("${outdir}/${hostname}.${var}.html.new", "${outdir}/${hostname}.${var}.html");
391 }
392 }
393
394 print HTML "</body></html>\n";
395 print HTML "<br>Generated on: " . localtime(time());
396 print HTML ' by <a href="http://git.zerfleddert.de/cgi-bin/gitweb.cgi/upsgraph">upsgraph</a>.';
397
398 close(HTML);
399
400 rename("${outdir}/index.html.new", "${outdir}/index.html");
401
402 sleep(${step}/2);
403 }
Impressum, Datenschutz