cade9b25c20b2f10323c4c21b533b32cecda79dd
[upsgraph] / upsgraph.pl
1 #!/usr/bin/perl -w
2
3 #Due to memory leak in Debian squeeze (Bug #545519)
4 my $use_rrds = 0;
5 my $rrd_result = 0;
6
7 if ((@ARGV != 1) && (@ARGV != 2)) {
8 print STDERR "Syntax: ${0} configfile [uid]\n";
9 exit(1);
10 }
11
12 use Net::SNMP;
13 use IO::Socket::INET;
14 use IO::Select;
15 use RRDs;
16 use File::Copy;
17 use Data::Dumper;
18
19 $UPSGRAPH::outdir = "";
20 $UPSGRAPH::daysCovered = 370;
21 $UPSGRAPH::step = 60;
22 $UPSGRAPH::stepsPerHour = (60 * 60) / $UPSGRAPH::step;
23 $UPSGRAPH::keep = ($UPSGRAPH::daysCovered*24*60*60)/$UPSGRAPH::step;
24 $UPSGRAPH::keepHours = ($UPSGRAPH::daysCovered*24*60*60)/$UPSGRAPH::stepsPerHour/$UPSGRAPH::step;
25 $UPSGRAPH::hosts = ();
26 $UPSGRAPH::regenerateOnStart = 1; #when set, regenerate graphs on script startup
27
28 do $ARGV[0] or die "can't read config: $!";
29
30 my $outdir = $UPSGRAPH::outdir;
31 my $step = $UPSGRAPH::step;
32 my $stepsPerHour = $UPSGRAPH::stepsPerHour;
33 my $keep = $UPSGRAPH::keep;
34 my $keepHours = $UPSGRAPH::keepHours;
35 my $hosts = $UPSGRAPH::hosts;
36
37 sub rrd_update(@) {
38 my @args = @_;
39
40 if ($use_rrds == 1) {
41 RRDs::update(@args);
42 $rrd_result = RRDs::error;
43 } else {
44 $rrd_result = system("rrdtool", "update", @args);
45 }
46 }
47
48 sub rrd_graph(@) {
49 my @args = @_;
50 my @rrd_out = ();
51
52 if ($use_rrds == 1) {
53 @rrd_out = RRDs::graph(@args);
54 $rrd_result = RRDs::error;
55 } else {
56 my $rrd_stdout;
57
58 open(RRDFD, '-|', 'rrdtool', 'graph', @args);
59 while(<RRDFD>) {
60 chomp;
61 $rrd_stdout = $_;
62 }
63 close(RRDFD);
64 $rrd_result = $?;
65 if ($rrd_result == 0) {
66 push @rrd_out, 0;
67 push @rrd_out, split(/x/, $rrd_stdout);
68 }
69 }
70
71 return @rrd_out;
72 }
73
74 sub rrdcreate(@) {
75 my $newrrd = shift;
76 my $field = shift;
77 my $vars = shift;
78 my $start = shift;
79
80 my @cmd = ("${newrrd}", "--step=${step}");
81
82 if (defined($start)) {
83 push @cmd, "--start=${start}";
84 }
85
86 push @cmd, "DS:${field}:GAUGE:600:" .
87 $vars->{$field}->{'min'} . ":" .
88 $vars->{$field}->{'max'};
89
90 push @cmd, "RRA:AVERAGE:0.5:1:${keep}";
91 push @cmd, "RRA:MIN:0.4:${stepsPerHour}:${keepHours}";
92 push @cmd, "RRA:MAX:0.4:${stepsPerHour}:${keepHours}";
93
94 RRDs::create(@cmd);
95 if (RRDs::error) {
96 print "Error while creating: " . RRDs::error . "\n";
97 exit 1;
98 }
99 }
100
101 sub fetch_snmp(@) {
102 my $address = shift;
103 my $community = shift;
104 my $oid = shift;
105
106 (my $session, my $error) = Net::SNMP->session(Hostname => $address,
107 Community => $community);
108
109 if (!$session) {
110 print STDERR "session error: $error";
111 return undef;
112 }
113
114 $session->translate(0);
115
116 my $result = $session->get_request($oid);
117
118 $session->close;
119
120 return undef if (!defined($result));
121
122 $result->{$oid};
123 }
124
125 sub fetch_tcp(@) {
126 my $address = shift;
127 my $port = shift;
128
129 my $sock = IO::Socket::INET->new(PeerAddr => $address,
130 PeerPort => $port,
131 Proto => 'tcp',
132 Timeout => 1);
133
134 return undef if (!$sock);
135
136 my $select = IO::Select->new($sock);
137
138 my $value = undef;
139
140 if ($select->can_read(1)) {
141 chomp($value) if (sysread($sock, $value, 4096) > 0);
142 }
143
144 close($sock);
145
146 if (!$value) {
147 return undef;
148 }
149
150 $value=~ s/\s//g;
151
152 $value;
153 }
154
155 sub fetch_tcp_multi(@) {
156 my $address = shift;
157 my $port = shift;
158 my $delimiter = shift;
159 my %values;
160
161 my $sock = IO::Socket::INET->new(PeerAddr => $address,
162 PeerPort => $port,
163 Proto => 'tcp',
164 Timeout => 1);
165
166 return undef if (!$sock);
167
168 my $select = IO::Select->new($sock);
169
170 while($select->can_read(1)) {
171 if (sysread($sock, my $buf, 16384) > 0) {
172 $buf=~s/\r//g;
173 foreach my $line (split(/\n/, $buf)) {
174 (my $key, my $value) = split(/${delimiter}/, $line);
175 $value=~ s/\s//g;
176 $values{$key} = $value;
177 }
178 } else {
179 last;
180 }
181 }
182
183 close($sock);
184
185 %values;
186 }
187
188 sub dayGraphFunc {
189 my $dataSrc = shift;
190 my $mode = shift;
191 my $color = shift;
192 my $label = shift;
193 my $dataPoints = shift;
194 my @args = ();
195 push @args, "CDEF:prev${mode}1=PREV(${dataSrc})";
196 for (my $i = 1; $i < $dataPoints - 1; ++$i) {
197 my $prev = $i;
198 my $next = $i+1;
199 push @args, "CDEF:prev${mode}${next}=PREV(prev${mode}${prev})";
200 }
201 my $dayCons = '';
202 my $consFunc = '';
203 for (my $i = 1; $i < $dataPoints; ++$i) {
204 $dayCons .= "prev${mode}${i},";
205 $consFunc .= ",${mode}";
206 }
207 push @args, "CDEF:day${mode}=${dayCons}${dataSrc}${consFunc}";
208 push @args, "CDEF:fillCalDay${mode}0=COUNT,${dataPoints},%,0,EQ,day${mode},UNKN,IF";
209 for (my $i = 1; $i < $dataPoints; ++$i) {
210 my $prev = $i-1;
211 my $next = $i;
212 push @args, "CDEF:fillCalDay${mode}${next}=PREV(fillCalDay${mode}${prev})";
213 }
214 my $fillPoint = '';
215 my $if = '';
216 for (my $i = 0; $i < $dataPoints; ++$i) {
217 $fillPoint .= "COUNT,${dataPoints},%,${i},EQ,fillCalDay${mode}${i},";
218 $if .= ",IF";
219 }
220 push @args, "CDEF:${mode}Curve=${fillPoint}UNKN${if}";
221 my $forwardShift = (24*60*60) * ($dataPoints - 1) / $dataPoints;
222 push @args, "SHIFT:${mode}Curve:-${forwardShift}";
223 push @args, "LINE1:${mode}Curve#${color}:${label}";
224 return \@args;
225 }
226
227 sub cfgToGraphDef {
228 my $cfg = shift;
229 my $varname = shift;
230 my $dpPerDay= shift;
231 my @graphDef = ();
232 foreach my $subGraph (@$cfg) {
233 if ($subGraph eq 'avg') {
234 push @graphDef, "LINE1:${varname}-avg#FF0000";
235 } elsif ($subGraph eq 'day-min') {
236 push @graphDef, @{dayGraphFunc("${varname}-min", 'MIN', '0000ff', 'Day Minimum Temperature', $dpPerDay)};
237 } elsif ($subGraph eq 'day-max') {
238 push @graphDef, @{dayGraphFunc("${varname}-max", 'MAX', '00ff00', 'Day Maximum Temperature', $dpPerDay)};
239 }
240 }
241 return \@graphDef;
242 }
243
244 if ($> == 0) {
245 if (@ARGV != 2) {
246 print STDERR "Running as root, please provide UID as 2th argument!\n";
247 exit(1);
248 }
249
250 print "Running as root, switching to ".$ARGV[1]."\n";
251 $< = $> = $ARGV[1];
252 }
253
254 foreach my $host (@$hosts) {
255 my $rrdfile = $host->{'rrdfile'};
256
257 foreach my $var (keys(%{$host->{'vars'}})) {
258 $host->{'vars'}->{$var}->{'min'} = 'U' if (!defined($host->{'vars'}->{$var}->{'min'}));
259 $host->{'vars'}->{$var}->{'max'} = 'U' if (!defined($host->{'vars'}->{$var}->{'max'}));
260 }
261
262 if (-e "${rrdfile}") {
263 print "Reading old ${rrdfile} to preserve data...\n";
264
265 my $rrdinfo = RRDs::info("${rrdfile}");
266 if (RRDs::error) {
267 print "Error while getting info: " . RRDs::error . "\n";
268 exit 1;
269 }
270
271 (my $start, my $ostep, my $names, my $data) =
272 RRDs::fetch("${rrdfile}",
273 "-s " . (time() - ($rrdinfo->{'rra[0].rows'} * $rrdinfo->{'step'})),
274 "AVERAGE");
275
276 if (RRDs::error) {
277 print "Error while fetching data: " . RRDs::error . "\n";
278 exit 1;
279 }
280
281 foreach my $field (@$names) {
282 if (! -e "${rrdfile}.${field}") {
283 rrdcreate("${rrdfile}.${field}",
284 "${field}",
285 $host->{'vars'},
286 (${start}-${ostep}));
287 }
288 }
289
290 my $pos = $start;
291 foreach my $line (@$data) {
292 foreach my $field (@$names) {
293 my $val = shift (@$line);
294 $val = 'U' if (!defined($val));
295
296 RRDs::update("${rrdfile}.${field}", "${pos}:${val}");
297 if (RRDs::error) {
298 print "Can't insert data: " . RRDs::error . "\n";
299 exit 1;
300 }
301
302 }
303
304 $pos += $ostep;
305
306 if ((($pos-$start)/$ostep) == $#$data) {
307 last;
308 }
309 }
310
311 rename("${rrdfile}", "${rrdfile}.old") or die "Can't rename old file: $!\n";
312 }
313
314 foreach my $field (@{$host->{'fields'}}) {
315 if (! -e "${rrdfile}.${field}") {
316 print "Creating ${rrdfile}.${field}...\n";
317 rrdcreate("${rrdfile}.${field}",
318 "${field}",
319 $host->{'vars'});
320 }
321
322 my $rrdinfo = RRDs::info("${rrdfile}.${field}");
323 if (RRDs::error) {
324 print "Error while getting info: " . RRDs::error . "\n";
325 exit 1;
326 }
327
328 my $limitsChanged = 0;
329 if (defined($rrdinfo->{"ds[${field}].min"})) {
330 if ($rrdinfo->{"ds[${field}].min"} ne $host->{'vars'}->{$field}->{'min'}) {
331 $limitsChanged = 1;
332 RRDs::tune("${rrdfile}.${field}","-i",$field.":".$host->{'vars'}->{$field}->{'min'});
333 }
334 } else {
335 if ($host->{'vars'}->{$field}->{'min'} ne 'U') {
336 $limitsChanged = 1;
337 RRDs::tune("${rrdfile}.${field}","-i",$field.":".$host->{'vars'}->{$field}->{'min'});
338 }
339 }
340
341 if (RRDs::error) {
342 print "Error while setting min: " . RRDs::error . "\n";
343 exit 1;
344 }
345
346 if (defined($rrdinfo->{"ds[${field}].max"})) {
347 if ($rrdinfo->{"ds[${field}].max"} ne $host->{'vars'}->{$field}->{'max'}) {
348 $limitsChanged = 1;
349 RRDs::tune("${rrdfile}.${field}","-a",$field.":".$host->{'vars'}->{$field}->{'max'});
350 }
351 } else {
352 if ($host->{'vars'}->{$field}->{'max'} ne 'U') {
353 $limitsChanged = 1;
354 RRDs::tune("${rrdfile}.${field}","-a",$field.":".$host->{'vars'}->{$field}->{'max'});
355 }
356 }
357
358 if (RRDs::error) {
359 print "Error while setting max: " . RRDs::error . "\n";
360 exit 1;
361 }
362
363 if ($rrdinfo->{'rra[0].rows'} != $keep ||
364 !defined($rrdinfo->{'rra[1].rows'}) || $rrdinfo->{'rra[1].rows'} != $keepHours ||
365 $limitsChanged == 1) {
366
367 print "Resizing ${rrdfile}.${field} from " . $rrdinfo->{'rra[0].rows'} .
368 " to ${keep} samples.\n";
369
370 (my $start, my $ostep, my $names, my $data) =
371 RRDs::fetch("${rrdfile}.${field}",
372 "-s " . (time() - ($rrdinfo->{'rra[0].rows'} * $rrdinfo->{'step'})),
373 "AVERAGE");
374
375 if (RRDs::error) {
376 print "Error while fetching data: " . RRDs::error . "\n";
377 exit 1;
378 }
379
380 rrdcreate("${rrdfile}.${field}.new",
381 "${field}",
382 $host->{'vars'},
383 (${start}-${ostep}));
384
385 print "Preserving data in file ${rrdfile}.${field} since " . localtime($start) . "\n";
386
387 my $pos = $start;
388 foreach my $line (@$data) {
389 my $vline = "${pos}";
390
391 foreach my $val (@$line) {
392 $val = 'U' if (!defined($val));
393 $vline .= ":${val}";
394 }
395 RRDs::update("${rrdfile}.${field}.new", $vline) or die "Can't insert data\n";
396
397 if (RRDs::error) {
398 print "Error while updating: " . RRDs::error . "\n";
399 exit 1;
400 }
401 $pos += $ostep;
402
403 if ((($pos-$start)/$ostep) == $#$data) {
404 last;
405 }
406 }
407
408 rename("${rrdfile}.${field}", "${rrdfile}.${field}.old") or die "Can't rename old file: $!\n";
409 rename("${rrdfile}.${field}.new", "${rrdfile}.${field}") or die "Can't rename new file: $!\n";
410
411 $rrdinfo = RRDs::info("${rrdfile}.${field}");
412 if (RRDs::error) {
413 print "Error while getting info: " . RRDs::error . "\n";
414 exit 1;
415 }
416
417 if ($rrdinfo->{'rra[0].rows'} != $keep) {
418 print "Failed!\n";
419 exit 1;
420 }
421 }
422 }
423 }
424
425 my $child = fork();
426
427 die "fork failed!" if (!defined($child));
428
429 exit 0 if ($child != 0);
430
431 my $first = $UPSGRAPH::regenerateOnStart;
432 while(1) {
433 open(HTML, ">${outdir}/index.html.new");
434
435 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>';
436 print HTML '<body bgcolor="#ffffff">';
437
438 foreach my $host (@$hosts) {
439 print HTML "[<a href=\"#".${host}->{'name'}."\">".${host}->{'name'}."</a>]&nbsp;";
440 }
441 print HTML "<br>\n";
442
443 foreach my $host (@$hosts) {
444 print HTML "<br>\n";
445 print HTML "<a name=\"".${host}->{'name'}."\"></a>\n";
446 my $vars = $host->{'vars'};
447 my $rrdfile = $host->{'rrdfile'};
448 my $hostname = $host->{'name'};
449 my %multi_values = ();
450
451 foreach my $var (@{$host->{'fields'}}) {
452 delete $vars->{$var}->{'value'};
453
454 my $result;
455
456 if ((!defined($vars->{$var}->{'proto'})) ||
457 ($vars->{$var}->{'proto'} eq '') ||
458 ($vars->{$var}->{'proto'} eq 'snmp')) {
459 $result = fetch_snmp($host->{'address'}, $host->{'community'}, $vars->{$var}->{'oid'});
460 } elsif ($vars->{$var}->{'proto'} eq 'tcp') {
461 $result = fetch_tcp($host->{'address'}, $vars->{$var}->{'port'});
462 } elsif ($vars->{$var}->{'proto'} eq 'tcp_multi') {
463 if (defined($multi_values{$vars->{$var}->{'multi_id'}})) {
464 $result = $multi_values{$vars->{$var}->{'multi_id'}}
465 } else {
466 my %values = fetch_tcp_multi($host->{'address'}, $vars->{$var}->{'port'}, $vars->{$var}->{'multi_delimiter'});
467 @multi_values{keys %values} = values %values;
468 $result = $multi_values{$vars->{$var}->{'multi_id'}};
469 }
470 }
471
472 next unless (defined $result);
473
474 $vars->{$var}->{'value'} = $result;
475 if (defined($vars->{$var}->{'factor'})) {
476 $vars->{$var}->{'value'} *= $vars->{$var}->{'factor'};
477 }
478 }
479
480 foreach my $var (@{$host->{'fields'}}) {
481 if (!(defined($vars->{$var}->{'value'}))) {
482 $vars->{$var}->{'value'} = 'U';
483 }
484 rrd_update("${rrdfile}.${var}", "N:" . $vars->{$var}->{'value'});
485 }
486 if ($rrd_result) {
487 print "Error while updating: " . $rrd_result . "\n";
488 }
489
490 foreach my $var (@{$host->{'fields'}}) {
491 my $graphWidth = 365 * 3;
492 my $graphConfig;
493 if (defined $vars->{$var}->{'graph'}) {
494 $graphConfig = $vars->{$var}->{'graph'};
495 foreach my $subGraph (qw(day week year)) {
496 if (!defined($graphConfig->{$subGraph})) {
497 $graphConfig->{$subGraph} = [ 'avg'];
498 }
499 }
500 } else {
501 $graphConfig = {
502 'day' => [ 'avg' ],
503 'week' => [ 'avg' ],
504 'year' => [ 'avg' ],
505 };
506 }
507
508 my @graphdef = ('-P', "-t", $hostname." - ".$vars->{$var}->{'name'});
509 push @graphdef, "--lazy" if !$first;
510
511 push @graphdef, "DEF:${var}-avg=${rrdfile}.${var}:${var}:AVERAGE";
512 push @graphdef, "DEF:${var}-min=${rrdfile}.${var}:${var}:MIN";
513 push @graphdef, "DEF:${var}-max=${rrdfile}.${var}:${var}:MAX";
514 push @graphdef, "LINE1:${var}-avg#FF0000";
515 push @graphdef, "VDEF:cur=${var}-avg,LAST";
516 push @graphdef, 'GPRINT:cur:Current\\: <span foreground="#FF0000">%.2lf</span>\\r';
517
518 my $mtime;
519 $mtime=(stat("${outdir}/${hostname}.${var}.png.work"))[9];
520
521 (my $averages, my $width, my $height) =
522 rrd_graph("${outdir}/${hostname}.${var}.png.work",
523 "-w", "720", @graphdef);
524
525 pop @graphdef;
526 pop @graphdef;
527 pop @graphdef;
528
529 if ($rrd_result) {
530 print "Error while graphing: " . $rrd_result . "\n";
531 } else {
532 my $newmtime=(stat("${outdir}/${hostname}.${var}.png.work"))[9];
533 if ((!defined($mtime)) || ($newmtime != $mtime)) {
534 copy("${outdir}/${hostname}.${var}.png.work", "${outdir}/${hostname}.${var}.png.new");
535 rename("${outdir}/${hostname}.${var}.png.new", "${outdir}/${hostname}.${var}.png");
536 }
537 }
538
539 print HTML "<a href=\"${hostname}.${var}.html\"><img src=\"${hostname}.${var}.png\" width=\"${width}\" height=\"${height}\" border=\"0\"></a><br>\n";
540
541 open (HTML2, ">${outdir}/${hostname}.${var}.html.new");
542 print HTML2 '<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><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>' . $vars->{$var}->{'name'} . '</title></head>';
543 print HTML2 '<body bgcolor="#ffffff">';
544
545 push @graphdef, "VDEF:min=${var}-min,MINIMUM";
546 push @graphdef, "GPRINT:min:Minimum\\: %.2lf";
547
548 push @graphdef, "VDEF:avg=${var}-avg,AVERAGE";
549 push @graphdef, "GPRINT:avg:Average\\: %.2lf";
550
551 push @graphdef, "VDEF:max=${var}-max,MAXIMUM";
552 push @graphdef, "GPRINT:max:Maximum\\: %.2lf";
553
554 push @graphdef, "VDEF:cur=${var}-avg,LAST";
555 push @graphdef, "GPRINT:cur:Current\\: %.2lf";
556
557 my @dayGraphDef = @graphdef;
558 push @dayGraphDef, @{cfgToGraphDef($graphConfig->{'day'}, ${var}, 24)};
559
560 $mtime=(stat("${outdir}/${hostname}.${var}.long.png.work"))[9];
561 ($averages, $width, $height) =
562 rrd_graph("${outdir}/${hostname}.${var}.long.png.work",
563 "-w", $graphWidth, @dayGraphDef);
564
565 if ($rrd_result) {
566 print "Error while graphing: " . $rrd_result . "\n";
567 } else {
568 my $newmtime=(stat("${outdir}/${hostname}.${var}.long.png.work"))[9];
569 if ((!defined($mtime)) || ($newmtime != $mtime)) {
570 copy("${outdir}/${hostname}.${var}.long.png.work", "${outdir}/${hostname}.${var}.long.png.new");
571 rename("${outdir}/${hostname}.${var}.long.png.new", "${outdir}/${hostname}.${var}.long.png");
572 }
573 }
574
575 print HTML2 "<img src=\"${hostname}.${var}.long.png\" width=\"${width}\" height=\"${height}\"><br>\n";
576
577 $mtime=(stat("${outdir}/${hostname}.${var}.week.png.work"))[9];
578
579 my @weekGraphDef = @graphdef;
580 push @weekGraphDef, @{cfgToGraphDef($graphConfig->{'week'}, ${var}, 24)};
581
582 ($averages, $width, $height) =
583 rrd_graph("${outdir}/${hostname}.${var}.week.png.work",
584 "-w", "$graphWidth", "-e", "now", "-s", "00:00-8d", @weekGraphDef);
585
586 if ($rrd_result) {
587 print "Error while graphing: " . $rrd_result . "\n";
588 } else {
589 my $newmtime=(stat("${outdir}/${hostname}.${var}.week.png.work"))[9];
590 if ((!defined($mtime)) || ($newmtime != $mtime)) {
591 copy("${outdir}/${hostname}.${var}.week.png.work", "${outdir}/${hostname}.${var}.week.png.new");
592 rename("${outdir}/${hostname}.${var}.week.png.new", "${outdir}/${hostname}.${var}.week.png");
593 }
594 }
595
596 print HTML2 "<img src=\"${hostname}.${var}.week.png\" width=\"${width}\" height=\"${height}\"><br>\n";
597
598 $mtime=(stat("${outdir}/${hostname}.${var}.year.png.work"))[9];
599
600 my @yearGraphDef = @graphdef;
601 push @yearGraphDef, @{cfgToGraphDef($graphConfig->{'year'}, ${var}, 3)};
602
603 ($averages, $width, $height) =
604 rrd_graph("${outdir}/${hostname}.${var}.year.png.work",
605 "-w", "$graphWidth", "-e", "00:00", "-s", "end-365d", @yearGraphDef);
606
607 if ($rrd_result) {
608 print "Error while graphing: " . $rrd_result . "\n";
609 } else {
610 my $newmtime=(stat("${outdir}/${hostname}.${var}.year.png.work"))[9];
611 if ((!defined($mtime)) || ($newmtime != $mtime)) {
612 copy("${outdir}/${hostname}.${var}.year.png.work", "${outdir}/${hostname}.${var}.year.png.new");
613 rename("${outdir}/${hostname}.${var}.year.png.new", "${outdir}/${hostname}.${var}.year.png");
614 }
615 }
616
617 print HTML2 "<img src=\"${hostname}.${var}.year.png\" width=\"${width}\" height=\"${height}\"><br>\n";
618
619 print HTML2 "</body></html>\n";
620 close(HTML2);
621 rename("${outdir}/${hostname}.${var}.html.new", "${outdir}/${hostname}.${var}.html");
622 }
623 }
624
625 print HTML "</body></html>\n";
626 print HTML "<br>Generated on: " . localtime(time());
627 print HTML ' by <a href="http://git.zerfleddert.de/cgi-bin/gitweb.cgi/upsgraph">upsgraph</a>.';
628
629 close(HTML);
630
631 rename("${outdir}/index.html.new", "${outdir}/index.html");
632
633 sleep(${step}/2);
634 $first = 0;
635 }
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