File:
[LON-CAPA] /
loncom /
loncron
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1.89:
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Sat May 14 16:12:53 2011 UTC (13 years, 1 month ago) by
raeburn
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CVS tags:
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- Duplicated &try_to_lock() routine moved to one location (in LONCAPA.pm).
- Try to get locks for lock_apachereload and lock_lciptables before
making system calls (in lond and loncron respectively).
1: #!/usr/bin/perl
2:
3: # Housekeeping program, started by cron, loncontrol and loncron.pl
4: #
5: # $Id: loncron,v 1.89 2011/05/14 16:12:53 raeburn Exp $
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA 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: # LON-CAPA 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 LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
29:
30: $|=1;
31: use strict;
32:
33: use lib '/home/httpd/lib/perl/';
34: use LONCAPA::Configuration;
35: use LONCAPA;
36: use Apache::lonnet;
37: use Apache::loncommon;
38:
39: use IO::File;
40: use IO::Socket;
41: use HTML::Entities;
42: use Getopt::Long;
43: #globals
44: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
45:
46: my $statusdir="/home/httpd/html/lon-status";
47:
48:
49: # --------------------------------------------------------- Output error status
50:
51: sub log {
52: my $fh=shift;
53: if ($fh) { print $fh @_ }
54: }
55:
56: sub errout {
57: my $fh=shift;
58: &log($fh,(<<ENDERROUT));
59: <table border="2" bgcolor="#CCCCCC">
60: <tr><td>Notices</td><td>$notices</td></tr>
61: <tr><td>Warnings</td><td>$warnings</td></tr>
62: <tr><td>Errors</td><td>$errors</td></tr>
63: </table><p><a href="#top">Top</a></p>
64: ENDERROUT
65: }
66:
67: sub rotate_logfile {
68: my ($file,$fh,$description) = @_;
69: my $size=(stat($file))[7];
70: if ($size>40000) {
71: &log($fh,"<p>Rotating $description ...</p>");
72: rename("$file.2","$file.3");
73: rename("$file.1","$file.2");
74: rename("$file","$file.1");
75: }
76: }
77:
78: sub start_daemon {
79: my ($fh,$daemon,$pidfile,$args) = @_;
80: my $progname=$daemon;
81: if ($daemon eq 'lonc') {
82: $progname='loncnew';
83: }
84: my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
85: &rotate_logfile($error_fname,$fh,'error logs');
86: if ($daemon eq 'lonc') {
87: &clean_sockets($fh);
88: }
89: system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
90: sleep 1;
91: if (-e $pidfile) {
92: &log($fh,"<p>Seems like it started ...</p>");
93: my $lfh=IO::File->new("$pidfile");
94: my $daemonpid=<$lfh>;
95: chomp($daemonpid);
96: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
97: return 1;
98: } else {
99: return 0;
100: }
101: }
102: &log($fh,"<p>Seems like that did not work!</p>");
103: $errors++;
104: return 0;
105: }
106:
107: sub checkon_daemon {
108: my ($fh,$daemon,$maxsize,$send,$args)=@_;
109:
110: my $result;
111: &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
112: printf("%-15s ",$daemon);
113: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
114: open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
115: while (my $line=<DFH>) {
116: &log($fh,"$line");
117: if ($line=~/INFO/) { $notices++; }
118: if ($line=~/WARNING/) { $notices++; }
119: if ($line=~/CRITICAL/) { $warnings++; }
120: };
121: close (DFH);
122: }
123: &log($fh,"</tt></p>");
124:
125: my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
126:
127: my $restartflag=1;
128: my $daemonpid;
129: if (-e $pidfile) {
130: my $lfh=IO::File->new("$pidfile");
131: $daemonpid=<$lfh>;
132: chomp($daemonpid);
133: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
134: &log($fh,"<h3>$daemon at pid $daemonpid responding");
135: if ($send) { &log($fh,", sending $send"); }
136: &log($fh,"</h3>");
137: if ($send eq 'USR1') { kill USR1 => $daemonpid; }
138: if ($send eq 'USR2') { kill USR2 => $daemonpid; }
139: $restartflag=0;
140: if ($send eq 'USR2') {
141: $result = 'reloaded';
142: print "reloaded\n";
143: } else {
144: $result = 'running';
145: print "running\n";
146: }
147: } else {
148: $errors++;
149: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
150: $restartflag=1;
151: &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
152: }
153: }
154: if ($restartflag==1) {
155: $simplestatus{$daemon}='off';
156: $errors++;
157: my $kadaemon=$daemon;
158: if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
159: &log($fh,'<br><font color="red">Killall '.$daemon.': '.
160: `killall $kadaemon 2>&1`.' - ');
161: sleep 1;
162: &log($fh,unlink($pidfile).' - '.
163: `killall -9 $kadaemon 2>&1`.
164: '</font><br>');
165: &log($fh,"<h3>$daemon not running, trying to start</h3>");
166:
167: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
168: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
169: $simplestatus{$daemon}='restarted';
170: $result = 'started';
171: print "started\n";
172: } else {
173: $errors++;
174: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
175: &log($fh,"<p>Give it one more try ...</p>");
176: print " ";
177: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
178: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
179: $simplestatus{$daemon}='restarted';
180: $result = 'started';
181: print "started\n";
182: } else {
183: $result = 'failed';
184: print " failed\n";
185: $simplestatus{$daemon}='failed';
186: $errors++; $errors++;
187: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
188: &log($fh,"<p>Unable to start $daemon</p>");
189: }
190: }
191:
192: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
193: &log($fh,"<p><pre>");
194: open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|");
195: while (my $line=<DFH>) {
196: &log($fh,"$line");
197: if ($line=~/WARNING/) { $notices++; }
198: if ($line=~/CRITICAL/) { $notices++; }
199: };
200: close (DFH);
201: &log($fh,"</pre></p>");
202: }
203: }
204:
205: my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
206: &rotate_logfile($fname,$fh,'logs');
207:
208: &errout($fh);
209: return $result;
210: }
211:
212: # --------------------------------------------------------------------- Machine
213: sub log_machine_info {
214: my ($fh)=@_;
215: &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
216: &log($fh,"<h3>loadavg</h3>");
217:
218: open (LOADAVGH,"/proc/loadavg");
219: my $loadavg=<LOADAVGH>;
220: close (LOADAVGH);
221:
222: &log($fh,"<tt>$loadavg</tt>");
223:
224: my @parts=split(/\s+/,$loadavg);
225: if ($parts[1]>4.0) {
226: $errors++;
227: } elsif ($parts[1]>2.0) {
228: $warnings++;
229: } elsif ($parts[1]>1.0) {
230: $notices++;
231: }
232:
233: &log($fh,"<h3>df</h3>");
234: &log($fh,"<pre>");
235:
236: open (DFH,"df|");
237: while (my $line=<DFH>) {
238: &log($fh,&encode_entities($line,'<>&"'));
239: @parts=split(/\s+/,$line);
240: my $usage=$parts[4];
241: $usage=~s/\W//g;
242: if ($usage>90) {
243: $warnings++;
244: $notices++;
245: } elsif ($usage>80) {
246: $warnings++;
247: } elsif ($usage>60) {
248: $notices++;
249: }
250: if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
251: }
252: close (DFH);
253: &log($fh,"</pre>");
254:
255:
256: &log($fh,"<h3>ps</h3>");
257: &log($fh,"<pre>");
258: my $psproc=0;
259:
260: open (PSH,"ps aux --cols 140 |");
261: while (my $line=<PSH>) {
262: &log($fh,&encode_entities($line,'<>&"'));
263: $psproc++;
264: }
265: close (PSH);
266: &log($fh,"</pre>");
267:
268: if ($psproc>200) { $notices++; }
269: if ($psproc>250) { $notices++; }
270:
271: &log($fh,"<h3>distprobe</h3>");
272: &log($fh,"<pre>");
273: open(DSH,"$perlvar{'lonDaemons'}/distprobe |");
274: while (my $line=<DSH>) {
275: &log($fh,&encode_entities($line,'<>&"'));
276: $psproc++;
277: }
278: close(DSH);
279: &log($fh,"</pre>");
280:
281: &errout($fh);
282: }
283:
284: sub start_logging {
285: my $fh=IO::File->new(">$statusdir/newstatus.html");
286: my %simplestatus=();
287: my $now=time;
288: my $date=localtime($now);
289:
290:
291: &log($fh,(<<ENDHEADERS));
292: <html>
293: <head>
294: <title>LON Status Report $perlvar{'lonHostID'}</title>
295: </head>
296: <body bgcolor="#AAAAAA">
297: <a name="top" />
298: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
299: <h2>$date ($now)</h2>
300: <ol>
301: <li><a href="#configuration">Configuration</a></li>
302: <li><a href="#machine">Machine Information</a></li>
303: <li><a href="#tmp">Temporary Files</a></li>
304: <li><a href="#tokens">Session Tokens</a></li>
305: <li><a href="#httpd">httpd</a></li>
306: <li><a href="#lonsql">lonsql</a></li>
307: <li><a href="#lond">lond</a></li>
308: <li><a href="#lonc">lonc</a></li>
309: <li><a href="#lonnet">lonnet</a></li>
310: <li><a href="#connections">Connections</a></li>
311: <li><a href="#delayed">Delayed Messages</a></li>
312: <li><a href="#errcount">Error Count</a></li>
313: </ol>
314: <hr />
315: <a name="configuration" />
316: <h2>Configuration</h2>
317: <h3>PerlVars</h3>
318: <table border="2">
319: ENDHEADERS
320:
321: foreach my $varname (sort(keys(%perlvar))) {
322: &log($fh,"<tr><td>$varname</td><td>".
323: &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
324: }
325: &log($fh,"</table><h3>Hosts</h3><table border='2'>");
326: my %hostname = &Apache::lonnet::all_hostnames();
327: foreach my $id (sort(keys(%hostname))) {
328: my $role = (&Apache::lonnet::is_library($id) ? 'library'
329: : 'access');
330: &log($fh,
331: "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
332: "</td><td>".$role.
333: "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
334: }
335: &log($fh,"</table><h3>Spare Hosts</h3><ul>");
336: foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
337: &log($fh,"<li>$type\n<ol>");
338: foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
339: &log($fh,"<li>$id</li>\n");
340: }
341: &log($fh,"</ol>\n</li>\n");
342: }
343: &log($fh,"</ul>\n");
344: return $fh;
345: }
346:
347: # --------------------------------------------------------------- clean out tmp
348: sub clean_tmp {
349: my ($fh)=@_;
350: &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
351: my ($cleaned,$old,$removed) = (0,0,0);
352: my %errors = (
353: dir => [],
354: file => [],
355: failopen => [],
356: );
357: my %error_titles = (
358: dir => 'failed to remove empty directory:',
359: file => 'failed to unlike stale file',
360: failopen => 'failed to open file or directory'
361: );
362: ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
363: &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
364: foreach my $key (sort(keys(%errors))) {
365: if (ref($errors{$key}) eq 'ARRAY') {
366: if (@{$errors{$key}} > 0) {
367: &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
368: join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
369: }
370: }
371: }
372: }
373:
374: sub recursive_clean_tmp {
375: my ($subdir,$cleaned,$old,$removed,$errors) = @_;
376: my $base = "$perlvar{'lonDaemons'}/tmp";
377: my $path = $base;
378: next if ($subdir =~ m{\.\./});
379: next unless (ref($errors) eq 'HASH');
380: unless ($subdir eq '') {
381: $path .= '/'.$subdir;
382: }
383: if (opendir(my $dh,"$path")) {
384: while (my $file = readdir($dh)) {
385: next if ($file =~ /^\.\.?$/);
386: my $fname = "$path/$file";
387: if (-d $fname) {
388: my $innerdir;
389: if ($subdir eq '') {
390: $innerdir = $file;
391: } else {
392: $innerdir = $subdir.'/'.$file;
393: }
394: ($cleaned,$old,$removed) =
395: &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
396: my @doms = &Apache::lonnet::current_machine_domains();
397:
398: if (open(my $dirhandle,$fname)) {
399: unless (($innerdir eq 'helprequests') ||
400: (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
401: my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
402: join('&&',@contents)."\n";
403: if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
404: closedir($dirhandle);
405: if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
406: if (rmdir($fname)) {
407: $removed ++;
408: } elsif (ref($errors->{dir}) eq 'ARRAY') {
409: push(@{$errors->{dir}},$fname);
410: }
411: }
412: }
413: } else {
414: closedir($dirhandle);
415: }
416: }
417: } else {
418: my ($dev,$ino,$mode,$nlink,
419: $uid,$gid,$rdev,$size,
420: $atime,$mtime,$ctime,
421: $blksize,$blocks)=stat($fname);
422: my $now=time;
423: my $since=$now-$mtime;
424: if ($since>$perlvar{'lonExpire'}) {
425: if ($subdir eq '') {
426: my $line='';
427: if ($fname =~ /\.db$/) {
428: if (unlink($fname)) {
429: $cleaned++;
430: } elsif (ref($errors->{file}) eq 'ARRAY') {
431: push(@{$errors->{file}},$fname);
432: }
433: } elsif (open(PROBE,$fname)) {
434: my $line='';
435: $line=<PROBE>;
436: close(PROBE);
437: if ($line=~/^CHECKOUTTOKEN\&/) {
438: if ($since>365*$perlvar{'lonExpire'}) {
439: if (unlink($fname)) {
440: $cleaned++;
441: } elsif (ref($errors->{file}) eq 'ARRAY') {
442: push(@{$errors->{file}},$fname);
443: }
444: } else {
445: $old++;
446: }
447: } else {
448: if (unlink($fname)) {
449: $cleaned++;
450: } elsif (ref($errors->{file}) eq 'ARRAY') {
451: push(@{$errors->{file}},$fname);
452: }
453: }
454: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
455: push(@{$errors->{failopen}},$fname);
456: }
457: } else {
458: if (unlink($fname)) {
459: $cleaned++;
460: } elsif (ref($errors->{file}) eq 'ARRAY') {
461: push(@{$errors->{file}},$fname);
462: }
463: }
464: }
465: }
466: }
467: closedir($dh);
468: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
469: push(@{$errors->{failopen}},$path);
470: }
471: return ($cleaned,$old,$removed);
472: }
473:
474: # ------------------------------------------------------------ clean out lonIDs
475: sub clean_lonIDs {
476: my ($fh)=@_;
477: &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
478: my $cleaned=0;
479: my $active=0;
480: while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
481: my ($dev,$ino,$mode,$nlink,
482: $uid,$gid,$rdev,$size,
483: $atime,$mtime,$ctime,
484: $blksize,$blocks)=stat($fname);
485: my $now=time;
486: my $since=$now-$mtime;
487: if ($since>$perlvar{'lonExpire'}) {
488: $cleaned++;
489: &log($fh,"Unlinking $fname<br>");
490: unlink("$fname");
491: } else {
492: $active++;
493: }
494: }
495: &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
496: &log($fh,"<h3>$active open session(s)</h3>");
497: }
498:
499: # ----------------------------------------------------------- clean out sockets
500: sub clean_sockets {
501: my ($fh)=@_;
502: my $cleaned=0;
503: opendir(SOCKETS,$perlvar{'lonSockDir'});
504: while (my $fname=readdir(SOCKETS)) {
505: next if (-d $fname
506: || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
507: $cleaned++;
508: &log($fh,"Unlinking $fname<br />");
509: unlink("/home/httpd/sockets/$fname");
510: }
511: &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
512: }
513:
514:
515: # ----------------------------------------------------------------------- httpd
516: sub check_httpd_logs {
517: my ($fh)=@_;
518: &log($fh,'<hr /><a name="httpd" /><h2>httpd</h2><h3>Access Log</h3><pre>');
519:
520: open (DFH,"tail -n25 /etc/httpd/logs/access_log|");
521: while (my $line=<DFH>) { &log($fh,&encode_entities($line,'<>&"')) };
522: close (DFH);
523:
524: &log($fh,"</pre><h3>Error Log</h3><pre>");
525:
526: open (DFH,"tail -n25 /etc/httpd/logs/error_log|");
527: while (my $line=<DFH>) {
528: &log($fh,"$line");
529: if ($line=~/\[error\]/) { $notices++; }
530: }
531: close (DFH);
532: &log($fh,"</pre>");
533: &errout($fh);
534: }
535:
536: # ---------------------------------------------------------------------- lonnet
537:
538: sub rotate_lonnet_logs {
539: my ($fh)=@_;
540: &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
541: print "checking logs\n";
542: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
543: open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
544: while (my $line=<DFH>) {
545: &log($fh,&encode_entities($line,'<>&"'));
546: }
547: close (DFH);
548: }
549: &log($fh,"</pre><h3>Perm Log</h3><pre>");
550:
551: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
552: open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
553: while (my $line=<DFH>) {
554: &log($fh,&encode_entities($line,'<>&"'));
555: }
556: close (DFH);
557: } else { &log($fh,"No perm log\n") }
558:
559: my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
560: &rotate_logfile($fname,$fh,'lonnet log');
561:
562: &log($fh,"</pre>");
563: &errout($fh);
564: }
565:
566: sub rotate_other_logs {
567: my ($fh) = @_;
568: my %logs = (
569: autoenroll => 'Auto Enroll log',
570: autocreate => 'Create Course log',
571: searchcat => 'Search Cataloguing log',
572: autoupdate => 'Auto Update log',
573: refreshcourseids_db => 'Refresh CourseIDs db log',
574: );
575: foreach my $item (keys(%logs)) {
576: my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
577: &rotate_logfile($fname,$fh,$logs{$item});
578: }
579: }
580:
581: # ----------------------------------------------------------------- Connections
582: sub test_connections {
583: my ($fh)=@_;
584: &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
585: print "testing connections\n";
586: &log($fh,"<table border='2'>");
587: my ($good,$bad)=(0,0);
588: my %hostname = &Apache::lonnet::all_hostnames();
589: foreach my $tryserver (sort(keys(%hostname))) {
590: print(".");
591: my $result;
592: my $answer=&Apache::lonnet::reply("ping",$tryserver);
593: if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
594: $result="<b>ok</b>";
595: $good++;
596: } else {
597: $result=$answer;
598: $warnings++;
599: if ($answer eq 'con_lost') {
600: $bad++;
601: $warnings++;
602: } else {
603: $good++; #self connection
604: }
605: }
606: if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
607: &log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
608: }
609: &log($fh,"</table>");
610: print "\n$good good, $bad bad connections\n";
611: &errout($fh);
612: }
613:
614:
615: # ------------------------------------------------------------ Delayed messages
616: sub check_delayed_msg {
617: my ($fh)=@_;
618: &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
619: print "checking buffers\n";
620:
621: &log($fh,'<h3>Scanning Permanent Log</h3>');
622:
623: my $unsend=0;
624:
625: my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log");
626: while (my $line=<$dfh>) {
627: my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line);
628: if ($sdf eq 'F') {
629: my $local=localtime($time);
630: &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br>");
631: $warnings++;
632: }
633: if ($sdf eq 'S') { $unsend--; }
634: if ($sdf eq 'D') { $unsend++; }
635: }
636:
637: &log($fh,"<p>Total unsend messages: <b>$unsend</b></p>\n");
638: $warnings=$warnings+5*$unsend;
639:
640: if ($unsend) { $simplestatus{'unsend'}=$unsend; }
641: &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
642: # list directory with delayed messages and remember offline servers
643: my %servers=();
644: open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
645: while (my $line=<DFH>) {
646: my ($server)=($line=~/\.(\w+)$/);
647: if ($server) { $servers{$server}=1; }
648: &log($fh,&encode_entities($line,'<>&"'));
649: }
650: &log($fh,"</pre>\n");
651: close (DFH);
652: # pong to all servers that have delayed messages
653: # this will trigger a reverse connection, which should flush the buffers
654: foreach my $tryserver (keys %servers) {
655: my $answer=&Apache::lonnet::reply("pong",$tryserver);
656: &log($fh,"Pong to $tryserver: $answer<br />");
657: }
658: }
659:
660: sub finish_logging {
661: my ($fh)=@_;
662: &log($fh,"<a name='errcount' />\n");
663: $totalcount=$notices+4*$warnings+100*$errors;
664: &errout($fh);
665: &log($fh,"<h1>Total Error Count: $totalcount</h1>");
666: my $now=time;
667: my $date=localtime($now);
668: &log($fh,"<hr />$date ($now)</body></html>\n");
669: print "lon-status webpage updated\n";
670: $fh->close();
671:
672: if ($errors) { $simplestatus{'errors'}=$errors; }
673: if ($warnings) { $simplestatus{'warnings'}=$warnings; }
674: if ($notices) { $simplestatus{'notices'}=$notices; }
675: $simplestatus{'time'}=time;
676: }
677:
678: sub log_simplestatus {
679: rename("$statusdir/newstatus.html","$statusdir/index.html");
680:
681: my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
682: foreach (keys %simplestatus) {
683: print $sfh $_.'='.$simplestatus{$_}.'&';
684: }
685: print $sfh "\n";
686: $sfh->close();
687: }
688:
689: sub write_loncaparevs {
690: if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
691: my %hostname = &Apache::lonnet::all_hostnames();
692: foreach my $id (sort(keys(%hostname))) {
693: if ($id ne '') {
694: my $loncaparev = &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
695: if ($loncaparev =~ /^[\w.\-]+$/) {
696: print $fh $id.':'.$loncaparev."\n";
697: }
698: }
699: }
700: close($fh);
701: }
702: return;
703: }
704:
705: sub write_serverhomeIDs {
706: if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
707: my %name_to_host = &Apache::lonnet::all_names();
708: foreach my $name (sort(keys(%name_to_host))) {
709: if ($name ne '') {
710: if (ref($name_to_host{$name}) eq 'ARRAY') {
711: my $serverhomeID = &Apache::lonnet::get_server_homeID($name,1,'loncron');
712: if ($serverhomeID ne '') {
713: print $fh $name.':'.$serverhomeID."\n";
714: } else {
715: print $fh $name.':'.$name_to_host{$name}->[0]."\n";
716: }
717: }
718: }
719: }
720: close($fh);
721: }
722: return;
723: }
724:
725: sub send_mail {
726: print "sending mail\n";
727: my $defdom = $perlvar{'lonDefDomain'};
728: my $origmail = $perlvar{'lonAdmEMail'};
729: my $emailto = &Apache::loncommon::build_recipient_list(undef,
730: 'lonstatusmail',$defdom,$origmail);
731: if ($totalcount>2500) {
732: $emailto.=",$perlvar{'lonSysEMail'}";
733: }
734: my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices";
735:
736: my $result=system("metasend -b -S 4000000 -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
737: if ($result != 0) {
738: $result=system("mail -s '$subj' $emailto < $statusdir/index.html");
739: }
740: }
741:
742: sub usage {
743: print(<<USAGE);
744: loncron - housekeeping program that checks up on various parts of Lon-CAPA
745:
746: Options:
747: --help Display
748: --noemail Do not send the status email
749: --justcheckconnections Only check the current status of the lonc/d
750: connections, do not send emails do not
751: check if the daemons are running, do not
752: generate lon-status
753: --justcheckdaemons Only check that all of the Lon-CAPA daemons are
754: running, do not send emails do not
755: check the lonc/d connections, do not
756: generate lon-status
757: --justreload Only tell the daemons to reload the config files,
758: do not send emails do not
759: check if the daemons are running, do not
760: generate lon-status
761:
762: USAGE
763: }
764:
765: # ================================================================ Main Program
766: sub main () {
767: my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
768: $justreload);
769: &GetOptions("help" => \$help,
770: "justcheckdaemons" => \$justcheckdaemons,
771: "noemail" => \$noemail,
772: "justcheckconnections" => \$justcheckconnections,
773: "justreload" => \$justreload
774: );
775: if ($help) { &usage(); return; }
776: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
777: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
778: %perlvar=%{$perlvarref};
779: undef $perlvarref;
780: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
781: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
782: chdir($perlvar{'lonDaemons'});
783: # --------------------------------------- Make sure that LON-CAPA is configured
784: # I only test for one thing here (lonHostID). This is just a safeguard.
785: if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
786: print("Unconfigured machine.\n");
787: my $emailto=$perlvar{'lonSysEMail'};
788: my $hostname=`/bin/hostname`;
789: chop $hostname;
790: $hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell
791: my $subj="LON: Unconfigured machine $hostname";
792: system("echo 'Unconfigured machine $hostname.' |\
793: mailto $emailto -s '$subj' > /dev/null");
794: exit 1;
795: }
796:
797: # ----------------------------- Make sure this process is running from user=www
798: my $wwwid=getpwnam('www');
799: if ($wwwid!=$<) {
800: print("User ID mismatch. This program must be run as user 'www'\n");
801: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
802: my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
803: system("echo 'User ID mismatch. loncron must be run as user www.' |\
804: mailto $emailto -s '$subj' > /dev/null");
805: exit 1;
806: }
807:
808: # -------------------------------------------- Force reload of host information
809: &Apache::lonnet::load_hosts_tab(1);
810: &Apache::lonnet::load_domain_tab(1);
811: &Apache::lonnet::get_iphost(1);
812:
813: # ----------------------------------------- Force firewall update for lond port
814:
815: if ((!$justcheckdaemons) && (!$justreload)) {
816: my $now = time;
817: my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
818: $now.$$.int(rand(10000));
819: if (open(my $fh,">$tmpfile")) {
820: my %iphosts = &Apache::lonnet::get_iphost();
821: foreach my $key (keys(%iphosts)) {
822: print $fh "$key\n";
823: }
824: close($fh);
825: if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) {
826: my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
827: system("$execpath $tmpfile");
828: unlink('/tmp/lock_lciptables'); # Remove the lock file.
829: }
830: unlink($tmpfile);
831: }
832: }
833:
834: # ---------------------------------------------------------------- Start report
835:
836: $errors=0;
837: $warnings=0;
838: $notices=0;
839:
840:
841: my $fh;
842: if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
843: $fh=&start_logging();
844:
845: &log_machine_info($fh);
846: &clean_tmp($fh);
847: &clean_lonIDs($fh);
848: &check_httpd_logs($fh);
849: &rotate_lonnet_logs($fh);
850: &rotate_other_logs($fh);
851: }
852: if (!$justcheckconnections && !$justreload) {
853: &checkon_daemon($fh,'lonmemcached',40000);
854: &checkon_daemon($fh,'lonsql',200000);
855: if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
856: &checkon_daemon($fh,'lond',40000,'USR2');
857: }
858: &checkon_daemon($fh,'lonc',40000,'USR1');
859: &checkon_daemon($fh,'lonmaxima',40000);
860: &checkon_daemon($fh,'lonr',40000);
861: }
862: if ($justreload) {
863: &checkon_daemon($fh,'lond',40000,'USR2');
864: &checkon_daemon($fh,'lonc',40000,'USR2');
865: }
866: if ($justcheckconnections) {
867: &test_connections($fh);
868: }
869: if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
870: &check_delayed_msg($fh);
871: &finish_logging($fh);
872: &log_simplestatus();
873: &write_loncaparevs();
874: &write_serverhomeIDs();
875:
876: if ($totalcount>200 && !$noemail) { &send_mail(); }
877: }
878: }
879:
880: &main();
881: 1;
882:
883:
884:
885:
886:
887:
888:
889:
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