1: #!/usr/bin/perl
2:
3: # Housekeeping program, started by cron, loncontrol and loncron.pl
4: #
5: # $Id: loncron,v 1.103.2.7 2020/05/06 14:40:08 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::Checksumming;
36: use LONCAPA;
37: use Apache::lonnet;
38: use Apache::loncommon;
39:
40: use IO::File;
41: use IO::Socket;
42: use HTML::Entities;
43: use Getopt::Long;
44: use File::Copy;
45: use Sys::Hostname::FQDN();
46:
47: #globals
48: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
49:
50: my $statusdir="/home/httpd/html/lon-status";
51:
52:
53: # --------------------------------------------------------- Output error status
54:
55: sub log {
56: my $fh=shift;
57: if ($fh) { print $fh @_ }
58: }
59:
60: sub errout {
61: my $fh=shift;
62: &log($fh,(<<ENDERROUT));
63: <table border="2" bgcolor="#CCCCCC">
64: <tr><td>Notices</td><td>$notices</td></tr>
65: <tr><td>Warnings</td><td>$warnings</td></tr>
66: <tr><td>Errors</td><td>$errors</td></tr>
67: </table><p><a href="#top">Top</a></p>
68: ENDERROUT
69: }
70:
71: sub rotate_logfile {
72: my ($file,$fh,$description) = @_;
73: my $size=(stat($file))[7];
74: if ($size>40000) {
75: &log($fh,"<p>Rotating $description ...</p>");
76: rename("$file.2","$file.3");
77: rename("$file.1","$file.2");
78: rename("$file","$file.1");
79: }
80: }
81:
82: sub start_daemon {
83: my ($fh,$daemon,$pidfile,$args) = @_;
84: my $progname=$daemon;
85: if ($daemon eq 'lonc') {
86: $progname='loncnew';
87: }
88: my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
89: &rotate_logfile($error_fname,$fh,'error logs');
90: if ($daemon eq 'lonc') {
91: &clean_sockets($fh);
92: }
93: system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
94: sleep 1;
95: if (-e $pidfile) {
96: &log($fh,"<p>Seems like it started ...</p>");
97: my $lfh=IO::File->new("$pidfile");
98: my $daemonpid=<$lfh>;
99: chomp($daemonpid);
100: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
101: return 1;
102: } else {
103: return 0;
104: }
105: }
106: &log($fh,"<p>Seems like that did not work!</p>");
107: $errors++;
108: return 0;
109: }
110:
111: sub checkon_daemon {
112: my ($fh,$daemon,$maxsize,$send,$args)=@_;
113:
114: my $result;
115: &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
116: printf("%-15s ",$daemon);
117: if ($fh) {
118: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
119: if (open(DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
120: while (my $line=<DFH>) {
121: &log($fh,"$line");
122: if ($line=~/INFO/) { $notices++; }
123: if ($line=~/WARNING/) { $notices++; }
124: if ($line=~/CRITICAL/) { $warnings++; }
125: }
126: close (DFH);
127: }
128: }
129: &log($fh,"</tt></p>");
130: }
131:
132: my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
133:
134: my $restartflag=1;
135: my $daemonpid;
136: if (-e $pidfile) {
137: my $lfh=IO::File->new("$pidfile");
138: $daemonpid=<$lfh>;
139: chomp($daemonpid);
140: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
141: &log($fh,"<h3>$daemon at pid $daemonpid responding");
142: if ($send) { &log($fh,", sending $send"); }
143: &log($fh,"</h3>");
144: if ($send eq 'USR1') { kill USR1 => $daemonpid; }
145: if ($send eq 'USR2') { kill USR2 => $daemonpid; }
146: $restartflag=0;
147: if ($send eq 'USR2') {
148: $result = 'reloaded';
149: print "reloaded\n";
150: } else {
151: $result = 'running';
152: print "running\n";
153: }
154: } else {
155: $errors++;
156: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
157: $restartflag=1;
158: &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
159: }
160: }
161: if ($restartflag==1) {
162: $simplestatus{$daemon}='off';
163: $errors++;
164: my $kadaemon=$daemon;
165: if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
166: &log($fh,'<br /><font color="red">Killall '.$daemon.': '.
167: `killall $kadaemon 2>&1`.' - ');
168: sleep 1;
169: &log($fh,unlink($pidfile).' - '.
170: `killall -9 $kadaemon 2>&1`.
171: '</font><br />');
172: &log($fh,"<h3>$daemon not running, trying to start</h3>");
173:
174: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
175: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
176: $simplestatus{$daemon}='restarted';
177: $result = 'started';
178: print "started\n";
179: } else {
180: $errors++;
181: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
182: &log($fh,"<p>Give it one more try ...</p>");
183: print " ";
184: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
185: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
186: $simplestatus{$daemon}='restarted';
187: $result = 'started';
188: print "started\n";
189: } else {
190: $result = 'failed';
191: print " failed\n";
192: $simplestatus{$daemon}='failed';
193: $errors++; $errors++;
194: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
195: &log($fh,"<p>Unable to start $daemon</p>");
196: }
197: }
198: if ($fh) {
199: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
200: &log($fh,"<p><pre>");
201: if (open(DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
202: while (my $line=<DFH>) {
203: &log($fh,"$line");
204: if ($line=~/WARNING/) { $notices++; }
205: if ($line=~/CRITICAL/) { $notices++; }
206: }
207: close (DFH);
208: }
209: &log($fh,"</pre></p>");
210: }
211: }
212: }
213:
214: my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
215: &rotate_logfile($fname,$fh,'logs');
216:
217: &errout($fh);
218: return $result;
219: }
220:
221: # --------------------------------------------------------------------- Machine
222: sub log_machine_info {
223: my ($fh)=@_;
224: &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
225: &log($fh,"<h3>loadavg</h3>");
226:
227: open (LOADAVGH,"/proc/loadavg");
228: my $loadavg=<LOADAVGH>;
229: close (LOADAVGH);
230:
231: &log($fh,"<tt>$loadavg</tt>");
232:
233: my @parts=split(/\s+/,$loadavg);
234: if ($parts[1]>4.0) {
235: $errors++;
236: } elsif ($parts[1]>2.0) {
237: $warnings++;
238: } elsif ($parts[1]>1.0) {
239: $notices++;
240: }
241:
242: &log($fh,"<h3>df</h3>");
243: &log($fh,"<pre>");
244:
245: open (DFH,"df|");
246: while (my $line=<DFH>) {
247: &log($fh,&encode_entities($line,'<>&"'));
248: @parts=split(/\s+/,$line);
249: my $usage=$parts[4];
250: $usage=~s/\W//g;
251: if ($usage>90) {
252: $warnings++;
253: $notices++;
254: } elsif ($usage>80) {
255: $warnings++;
256: } elsif ($usage>60) {
257: $notices++;
258: }
259: if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
260: }
261: close (DFH);
262: &log($fh,"</pre>");
263:
264:
265: &log($fh,"<h3>ps</h3>");
266: &log($fh,"<pre>");
267: my $psproc=0;
268:
269: open (PSH,"ps aux --cols 140 |");
270: while (my $line=<PSH>) {
271: &log($fh,&encode_entities($line,'<>&"'));
272: $psproc++;
273: }
274: close (PSH);
275: &log($fh,"</pre>");
276:
277: if ($psproc>200) { $notices++; }
278: if ($psproc>250) { $notices++; }
279:
280: &log($fh,"<h3>distprobe</h3>");
281: &log($fh,"<pre>");
282: &log($fh,&encode_entities(&LONCAPA::distro(),'<>&"'));
283: &log($fh,"</pre>");
284:
285: &errout($fh);
286: }
287:
288: sub start_logging {
289: my $fh=IO::File->new(">$statusdir/newstatus.html");
290: my %simplestatus=();
291: my $now=time;
292: my $date=localtime($now);
293:
294:
295: &log($fh,(<<ENDHEADERS));
296: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
297: <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
298: <head>
299: <title>LON Status Report $perlvar{'lonHostID'}</title>
300: <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
301: </head>
302: <body bgcolor="#AAAAAA">
303: <a name="top" />
304: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
305: <h2>$date ($now)</h2>
306: <ol>
307: <li><a href="#configuration">Configuration</a></li>
308: <li><a href="#machine">Machine Information</a></li>
309: <li><a href="#tmp">Temporary Files</a></li>
310: <li><a href="#tokens">Session Tokens</a></li>
311: <li><a href="#webdav">WebDAV Session Tokens</a></li>
312: <li><a href="#httpd">httpd</a></li>
313: <li><a href="#lonsql">lonsql</a></li>
314: <li><a href="#lond">lond</a></li>
315: <li><a href="#lonc">lonc</a></li>
316: <li><a href="#lonnet">lonnet</a></li>
317: <li><a href="#connections">Connections</a></li>
318: <li><a href="#delayed">Delayed Messages</a></li>
319: <li><a href="#errcount">Error Count</a></li>
320: </ol>
321: <hr />
322: <a name="configuration" />
323: <h2>Configuration</h2>
324: <h3>PerlVars</h3>
325: <table border="2">
326: ENDHEADERS
327:
328: foreach my $varname (sort(keys(%perlvar))) {
329: &log($fh,"<tr><td>$varname</td><td>".
330: &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
331: }
332: &log($fh,"</table><h3>Hosts</h3><table border='2'>");
333: my %hostname = &Apache::lonnet::all_hostnames();
334: foreach my $id (sort(keys(%hostname))) {
335: my $role = (&Apache::lonnet::is_library($id) ? 'library'
336: : 'access');
337: &log($fh,
338: "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
339: "</td><td>".$role.
340: "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
341: }
342: &log($fh,"</table><h3>Spare Hosts</h3>");
343: if (keys(%Apache::lonnet::spareid) > 0) {
344: &log($fh,"<ul>");
345: foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
346: &log($fh,"<li>$type\n<ol>");
347: foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
348: &log($fh,"<li>$id</li>\n");
349: }
350: &log($fh,"</ol>\n</li>\n");
351: }
352: &log($fh,"</ul>\n");
353: } else {
354: &log($fh,"No spare hosts specified<br />\n");
355: }
356: return $fh;
357: }
358:
359: # --------------------------------------------------------------- clean out tmp
360: sub clean_tmp {
361: my ($fh)=@_;
362: &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
363: my ($cleaned,$old,$removed) = (0,0,0);
364: my %errors = (
365: dir => [],
366: file => [],
367: failopen => [],
368: );
369: my %error_titles = (
370: dir => 'failed to remove empty directory:',
371: file => 'failed to unlike stale file',
372: failopen => 'failed to open file or directory'
373: );
374: ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
375: &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
376: foreach my $key (sort(keys(%errors))) {
377: if (ref($errors{$key}) eq 'ARRAY') {
378: if (@{$errors{$key}} > 0) {
379: &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
380: join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
381: }
382: }
383: }
384: }
385:
386: sub recursive_clean_tmp {
387: my ($subdir,$cleaned,$old,$removed,$errors) = @_;
388: my $base = "$perlvar{'lonDaemons'}/tmp";
389: my $path = $base;
390: next if ($subdir =~ m{\.\./});
391: next unless (ref($errors) eq 'HASH');
392: unless ($subdir eq '') {
393: $path .= '/'.$subdir;
394: }
395: if (opendir(my $dh,"$path")) {
396: while (my $file = readdir($dh)) {
397: next if ($file =~ /^\.\.?$/);
398: my $fname = "$path/$file";
399: if (-d $fname) {
400: my $innerdir;
401: if ($subdir eq '') {
402: $innerdir = $file;
403: } else {
404: $innerdir = $subdir.'/'.$file;
405: }
406: ($cleaned,$old,$removed) =
407: &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
408: my @doms = &Apache::lonnet::current_machine_domains();
409:
410: if (open(my $dirhandle,$fname)) {
411: unless (($innerdir eq 'helprequests') ||
412: (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
413: my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
414: join('&&',@contents)."\n";
415: if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
416: closedir($dirhandle);
417: if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
418: if (rmdir($fname)) {
419: $removed ++;
420: } elsif (ref($errors->{dir}) eq 'ARRAY') {
421: push(@{$errors->{dir}},$fname);
422: }
423: }
424: }
425: } else {
426: closedir($dirhandle);
427: }
428: }
429: } else {
430: my ($dev,$ino,$mode,$nlink,
431: $uid,$gid,$rdev,$size,
432: $atime,$mtime,$ctime,
433: $blksize,$blocks)=stat($fname);
434: my $now=time;
435: my $since=$now-$mtime;
436: if ($since>$perlvar{'lonExpire'}) {
437: if ($subdir eq '') {
438: my $line='';
439: if ($fname =~ /\.db$/) {
440: if (unlink($fname)) {
441: $cleaned++;
442: } elsif (ref($errors->{file}) eq 'ARRAY') {
443: push(@{$errors->{file}},$fname);
444: }
445: } elsif (open(PROBE,$fname)) {
446: my $line='';
447: $line=<PROBE>;
448: close(PROBE);
449: if ($line=~/^CHECKOUTTOKEN\&/) {
450: if ($since>365*$perlvar{'lonExpire'}) {
451: if (unlink($fname)) {
452: $cleaned++;
453: } elsif (ref($errors->{file}) eq 'ARRAY') {
454: push(@{$errors->{file}},$fname);
455: }
456: } else {
457: $old++;
458: }
459: } else {
460: if (unlink($fname)) {
461: $cleaned++;
462: } elsif (ref($errors->{file}) eq 'ARRAY') {
463: push(@{$errors->{file}},$fname);
464: }
465: }
466: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
467: push(@{$errors->{failopen}},$fname);
468: }
469: } else {
470: if (unlink($fname)) {
471: $cleaned++;
472: } elsif (ref($errors->{file}) eq 'ARRAY') {
473: push(@{$errors->{file}},$fname);
474: }
475: }
476: }
477: }
478: }
479: closedir($dh);
480: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
481: push(@{$errors->{failopen}},$path);
482: }
483: return ($cleaned,$old,$removed);
484: }
485:
486: # ------------------------------------------------------------ clean out lonIDs
487: sub clean_lonIDs {
488: my ($fh)=@_;
489: &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
490: my $cleaned=0;
491: my $active=0;
492: while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
493: my $now=time;
494: if (-l $fname) {
495: my $linkfname = readlink($fname);
496: if (-f $linkfname) {
497: if ($linkfname =~ m{^$perlvar{'lonIDsDir'}/[^/]+\.id$}) {
498: my @data = stat($linkfname);
499: my $mtime = $data[9];
500: my $since=$now-$mtime;
501: if ($since>$perlvar{'lonExpire'}) {
502: if (unlink($linkfname)) {
503: $cleaned++;
504: &log($fh,"Unlinking $linkfname<br />");
505: unlink($fname);
506: }
507: }
508: }
509: } else {
510: unlink($fname);
511: }
512: } elsif (-f $fname) {
513: my @data = stat($fname);
514: my $mtime = $data[9];
515: my $since=$now-$mtime;
516: if ($since>$perlvar{'lonExpire'}) {
517: if (unlink($fname)) {
518: $cleaned++;
519: &log($fh,"Unlinking $fname<br />");
520: }
521: } else {
522: $active++;
523: }
524: }
525: }
526: &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
527: &log($fh,"<h3>$active open session(s)</h3>");
528: }
529:
530: # -------------------------------------------------------- clean out balanceIDs
531:
532: sub clean_balanceIDs {
533: my ($fh)=@_;
534: &log($fh,'<hr /><a name="balcookies" /><h2>Session Tokens</h2>');
535: my $cleaned=0;
536: my $active=0;
537: if (-d $perlvar{'lonBalanceDir'}) {
538: while (my $fname=<$perlvar{'balanceDir'}/*.id>) {
539: my ($dev,$ino,$mode,$nlink,
540: $uid,$gid,$rdev,$size,
541: $atime,$mtime,$ctime,
542: $blksize,$blocks)=stat($fname);
543: my $now=time;
544: my $since=$now-$mtime;
545: if ($since>$perlvar{'lonExpire'}) {
546: $cleaned++;
547: &log($fh,"Unlinking $fname<br />");
548: unlink("$fname");
549: } else {
550: $active++;
551: }
552: }
553: }
554: &log($fh,"<p>Cleaned up ".$cleaned." stale balancer files</p>");
555: &log($fh,"<h3>$active unexpired balancer files</h3>");
556: }
557:
558: # ------------------------------------------------ clean out webDAV Session IDs
559: sub clean_webDAV_sessionIDs {
560: my ($fh)=@_;
561: if ($perlvar{'lonRole'} eq 'library') {
562: &log($fh,'<hr /><a name="webdav" /><h2>WebDAV Session Tokens</h2>');
563: my $cleaned=0;
564: my $active=0;
565: my $now = time;
566: if (-d $perlvar{'lonDAVsessDir'}) {
567: while (my $fname=<$perlvar{'lonDAVsessDir'}/*>) {
568: my @stats = stat($fname);
569: my $since=$now-$stats[9];
570: if ($since>$perlvar{'lonExpire'}) {
571: $cleaned++;
572: &log($fh,"Unlinking $fname<br />");
573: unlink("$fname");
574: } else {
575: $active++;
576: }
577: }
578: &log($fh,"<p>Cleaned up ".$cleaned." stale webDAV session token(s).</p>");
579: &log($fh,"<h3>$active open webDAV session(s)</h3>");
580: }
581: }
582: }
583:
584: # ----------------------------------------------------------- clean out sockets
585: sub clean_sockets {
586: my ($fh)=@_;
587: my $cleaned=0;
588: opendir(SOCKETS,$perlvar{'lonSockDir'});
589: while (my $fname=readdir(SOCKETS)) {
590: next if (-d $fname
591: || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
592: $cleaned++;
593: &log($fh,"Unlinking $fname<br />");
594: unlink("/home/httpd/sockets/$fname");
595: }
596: &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
597: }
598:
599:
600: # ----------------------------------------------------------------------- httpd
601: sub check_httpd_logs {
602: my ($fh)=@_;
603: if (open(PIPE,"./lchttpdlogs|")) {
604: while (my $line=<PIPE>) {
605: &log($fh,$line);
606: if ($line=~/\[error\]/) { $notices++; }
607: }
608: close(PIPE);
609: }
610: &errout($fh);
611: }
612:
613: # ---------------------------------------------------------------------- lonnet
614:
615: sub rotate_lonnet_logs {
616: my ($fh)=@_;
617: &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
618: print "Checking logs.\n";
619: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
620: open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
621: while (my $line=<DFH>) {
622: &log($fh,&encode_entities($line,'<>&"'));
623: }
624: close (DFH);
625: }
626: &log($fh,"</pre><h3>Perm Log</h3><pre>");
627:
628: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
629: open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
630: while (my $line=<DFH>) {
631: &log($fh,&encode_entities($line,'<>&"'));
632: }
633: close (DFH);
634: } else { &log($fh,"No perm log\n") }
635:
636: my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
637: &rotate_logfile($fname,$fh,'lonnet log');
638:
639: &log($fh,"</pre>");
640: &errout($fh);
641: }
642:
643: sub rotate_other_logs {
644: my ($fh) = @_;
645: my %logs = (
646: autoenroll => 'Auto Enroll log',
647: autocreate => 'Create Course log',
648: searchcat => 'Search Cataloguing log',
649: autoupdate => 'Auto Update log',
650: refreshcourseids_db => 'Refresh CourseIDs db log',
651: );
652: foreach my $item (keys(%logs)) {
653: my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
654: &rotate_logfile($fname,$fh,$logs{$item});
655: }
656: }
657:
658: # ----------------------------------------------------------------- Connections
659: sub test_connections {
660: my ($fh)=@_;
661: &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
662: print "Testing connections.\n";
663: &log($fh,"<table border='2'>");
664: my ($good,$bad)=(0,0);
665: my %hostname = &Apache::lonnet::all_hostnames();
666: foreach my $tryserver (sort(keys(%hostname))) {
667: print(".");
668: my $result;
669: my $answer=&Apache::lonnet::reply("ping",$tryserver);
670: if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
671: $result="<b>ok</b>";
672: $good++;
673: } else {
674: $result=$answer;
675: $warnings++;
676: if ($answer eq 'con_lost') {
677: $bad++;
678: $warnings++;
679: } else {
680: $good++; #self connection
681: }
682: }
683: if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
684: &log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
685: }
686: &log($fh,"</table>");
687: print "\n$good good, $bad bad connections\n";
688: &errout($fh);
689: }
690:
691:
692: # ------------------------------------------------------------ Delayed messages
693: sub check_delayed_msg {
694: my ($fh)=@_;
695: &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
696: print "Checking buffers.\n";
697:
698: &log($fh,'<h3>Scanning Permanent Log</h3>');
699:
700: my $unsend=0;
701:
702: my %hostname = &Apache::lonnet::all_hostnames();
703: my $numhosts = scalar(keys(%hostname));
704:
705: my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log");
706: while (my $line=<$dfh>) {
707: my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line);
708: if ($numhosts) {
709: next unless ($hostname{$dserv});
710: }
711: if ($sdf eq 'F') {
712: my $local=localtime($time);
713: &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br />");
714: $warnings++;
715: }
716: if ($sdf eq 'S') { $unsend--; }
717: if ($sdf eq 'D') { $unsend++; }
718: }
719:
720: &log($fh,"<p>Total unsend messages: <b>$unsend</b></p>\n");
721: if ($unsend > 0) {
722: $warnings=$warnings+5*$unsend;
723: }
724:
725: if ($unsend) { $simplestatus{'unsend'}=$unsend; }
726: &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
727: # list directory with delayed messages and remember offline servers
728: my %servers=();
729: open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
730: while (my $line=<DFH>) {
731: my ($server)=($line=~/\.(\w+)$/);
732: if ($server) { $servers{$server}=1; }
733: &log($fh,&encode_entities($line,'<>&"'));
734: }
735: &log($fh,"</pre>\n");
736: close (DFH);
737: # pong to all servers that have delayed messages
738: # this will trigger a reverse connection, which should flush the buffers
739: foreach my $tryserver (sort(keys(%servers))) {
740: if ($hostname{$tryserver} || !$numhosts) {
741: my $answer;
742: eval {
743: local $SIG{ ALRM } = sub { die "TIMEOUT" };
744: alarm(20);
745: $answer = &Apache::lonnet::reply("pong",$tryserver);
746: alarm(0);
747: };
748: if ($@ && $@ =~ m/TIMEOUT/) {
749: &log($fh,"Attempted pong to $tryserver timed out<br />");
750: print "Time out while contacting: $tryserver for pong.\n";
751: } else {
752: &log($fh,"Pong to $tryserver: $answer<br />");
753: }
754: } else {
755: &log($fh,"$tryserver has delayed messages, but is not part of the cluster -- skipping 'Pong'.<br />");
756: }
757: }
758: }
759:
760: sub finish_logging {
761: my ($fh)=@_;
762: &log($fh,"<a name='errcount' />\n");
763: $totalcount=$notices+4*$warnings+100*$errors;
764: &errout($fh);
765: &log($fh,"<h1>Total Error Count: $totalcount</h1>");
766: my $now=time;
767: my $date=localtime($now);
768: &log($fh,"<hr />$date ($now)</body></html>\n");
769: print "lon-status webpage updated.\n";
770: $fh->close();
771:
772: if ($errors) { $simplestatus{'errors'}=$errors; }
773: if ($warnings) { $simplestatus{'warnings'}=$warnings; }
774: if ($notices) { $simplestatus{'notices'}=$notices; }
775: $simplestatus{'time'}=time;
776: }
777:
778: sub log_simplestatus {
779: rename("$statusdir/newstatus.html","$statusdir/index.html");
780:
781: my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
782: foreach (keys %simplestatus) {
783: print $sfh $_.'='.$simplestatus{$_}.'&';
784: }
785: print $sfh "\n";
786: $sfh->close();
787: }
788:
789: sub write_loncaparevs {
790: print "Retrieving LON-CAPA version information.\n";
791: my %hostname = &Apache::lonnet::all_hostnames();
792: my $output;
793: foreach my $id (sort(keys(%hostname))) {
794: if ($id ne '') {
795: my $loncaparev;
796: eval {
797: local $SIG{ ALRM } = sub { die "TIMEOUT" };
798: alarm(10);
799: $loncaparev =
800: &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
801: alarm(0);
802: };
803: if ($@ && $@ =~ m/TIMEOUT/) {
804: print "Time out while contacting lonHost: $id for version.\n";
805: }
806: if ($loncaparev =~ /^[\w.\-]+$/) {
807: $output .= $id.':'.$loncaparev."\n";
808: }
809: }
810: }
811: if ($output) {
812: if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
813: print $fh $output;
814: close($fh);
815: &Apache::lonnet::load_loncaparevs();
816: }
817: }
818: return;
819: }
820:
821: sub write_serverhomeIDs {
822: print "Retrieving LON-CAPA lonHostID information.\n";
823: my %name_to_host = &Apache::lonnet::all_names();
824: my $output;
825: foreach my $name (sort(keys(%name_to_host))) {
826: if ($name ne '') {
827: if (ref($name_to_host{$name}) eq 'ARRAY') {
828: my $serverhomeID;
829: eval {
830: local $SIG{ ALRM } = sub { die "TIMEOUT" };
831: alarm(10);
832: $serverhomeID =
833: &Apache::lonnet::get_server_homeID($name,1,'loncron');
834: alarm(0);
835: };
836: if ($@ && $@ =~ m/TIMEOUT/) {
837: print "Time out while contacting server: $name\n";
838: }
839: if ($serverhomeID ne '') {
840: $output .= $name.':'.$serverhomeID."\n";
841: } else {
842: $output .= $name.':'.$name_to_host{$name}->[0]."\n";
843: }
844: }
845: }
846: }
847: if ($output) {
848: if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
849: print $fh $output;
850: close($fh);
851: &Apache::lonnet::load_serverhomeIDs();
852: }
853: }
854: return;
855: }
856:
857: sub write_checksums {
858: my $distro = &LONCAPA::distro();
859: if ($distro) {
860: print "Retrieving file version and checksumming.\n";
861: my $numchksums = 0;
862: my ($chksumsref,$versionsref) =
863: &LONCAPA::Checksumming::get_checksums($distro,$perlvar{'lonDaemons'},
864: $perlvar{'lonLib'},
865: $perlvar{'lonIncludes'},
866: $perlvar{'lonTabDir'});
867: if (ref($chksumsref) eq 'HASH') {
868: $numchksums = scalar(keys(%{$chksumsref}));
869: }
870: print "File version retrieved and checksumming completed for $numchksums files.\n";
871: } else {
872: print "File version retrieval and checksumming skipped - could not determine Linux distro.\n";
873: }
874: return;
875: }
876:
877: sub write_hostips {
878: my $lontabdir = $perlvar{'lonTabDir'};
879: my $defdom = $perlvar{'lonDefDomain'};
880: my $lonhost = $perlvar{'lonHostID'};
881: my $newfile = "$lontabdir/currhostips.tab";
882: my $oldfile = "$lontabdir/prevhostips.tab";
883: my (%prevhosts,%currhosts,%ipchange);
884: if ((-e $newfile) && (-s $newfile)) {
885: move($newfile,$oldfile);
886: chmod(0644,$oldfile);
887: if (open(my $fh,'<',$oldfile)) {
888: while (my $line=<$fh>) {
889: chomp($line);
890: if ($line =~ /^([^:]+):([\d.]+)$/) {
891: $prevhosts{$1} = $2;
892: }
893: }
894: close($fh);
895: }
896: }
897: my ($ip_info,$cached) =
898: &Apache::lonnet::is_cached_new('iphost','iphost');
899: if (!$cached) {
900: &Apache::lonnet::get_iphost();
901: ($ip_info,$cached) =
902: &Apache::lonnet::is_cached_new('iphost','iphost');
903: }
904: if (ref($ip_info) eq 'ARRAY') {
905: %currhosts = %{$ip_info->[1]};
906: if (open(my $fh,'>',$newfile)) {
907: foreach my $key (keys(%currhosts)) {
908: print $fh "$key:$currhosts{$key}\n";
909: }
910: close($fh);
911: chmod(0644,$newfile);
912: }
913: }
914: if (keys(%prevhosts) && keys(%currhosts)) {
915: foreach my $key (keys(%prevhosts)) {
916: unless ($currhosts{$key} eq $prevhosts{$key}) {
917: $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key};
918: }
919: }
920: foreach my $key (keys(%currhosts)) {
921: unless ($currhosts{$key} eq $prevhosts{$key}) {
922: $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key};
923: }
924: }
925: }
926: if (&Apache::lonnet::domain($defdom,'primary') eq $lonhost) {
927: if (keys(%ipchange)) {
928: if (open(my $fh,'>>',$perlvar{'lonDaemons'}.'/logs/hostip.log')) {
929: print $fh "********************\n".localtime(time).' Changes --'."\n".
930: "| Hostname | Previous IP | New IP |\n".
931: " --------------------------------- \n";
932: foreach my $hostname (sort(keys(%ipchange))) {
933: print $fh "| $hostname | $ipchange{$hostname} |\n";
934: }
935: print $fh "\n*******************\n\n";
936: close($fh);
937: }
938: my $emailto = &Apache::loncommon::build_recipient_list(undef,
939: 'hostipmail',$defdom);
940: if ($emailto) {
941: my $subject = "LON-CAPA Hostname to IP change ($perlvar{'lonHostID'})";
942: my $chgmail = "To: $emailto\n".
943: "Subject: $subject\n".
944: "Content-type: text/plain\; charset=UTF-8\n".
945: "MIME-Version: 1.0\n\n".
946: "Host/IP changes\n".
947: " \n".
948: "| Hostname | Previous IP | New IP |\n".
949: " --------------------------------- \n";
950: foreach my $hostname (sort(keys(%ipchange))) {
951: $chgmail .= "| $hostname | $ipchange{$hostname} |\n";
952: }
953: $chgmail .= "\n\n";
954: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
955: print $mailh $chgmail;
956: close($mailh);
957: print "Sending mail notification of hostname/IP changes.\n";
958: }
959: }
960: }
961: }
962: return;
963: }
964:
965: sub send_mail {
966: my $defdom = $perlvar{'lonDefDomain'};
967: my $origmail = $perlvar{'lonAdmEMail'};
968: my $emailto = &Apache::loncommon::build_recipient_list(undef,
969: 'lonstatusmail',$defdom,$origmail);
970: if ($totalcount>2500) {
971: $emailto.=",$perlvar{'lonSysEMail'}";
972: }
973: my $from;
974: my $hostname=`/bin/hostname`;
975: chop($hostname);
976: $hostname=~s/[^\w\.]//g;
977: if ($hostname) {
978: $from = 'www@'.$hostname;
979: }
980: my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices";
981: my $loncronmail = "To: $emailto\n".
982: "From: $from\n".
983: "Subject: ".$subj."\n".
984: "Content-type: text/html\; charset=UTF-8\n".
985: "MIME-Version: 1.0\n\n";
986: if (open(my $fh,"<$statusdir/index.html")) {
987: while (<$fh>) {
988: $loncronmail .= $_;
989: }
990: close($fh);
991: } else {
992: $loncronmail .= "Failed to read from http://$hostname/lon-status/index.html\n";
993: }
994: $loncronmail .= "\n\n";
995: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
996: print $mailh $loncronmail;
997: close($mailh);
998: print "Sending mail.\n";
999: } else {
1000: print "Sending mail failed.\n";
1001: }
1002: }
1003:
1004: sub usage {
1005: print(<<USAGE);
1006: loncron - housekeeping program that checks up on various parts of LON-CAPA
1007:
1008: Options:
1009: --help Display
1010: --noemail Do not send the status email
1011: --justcheckconnections Only check the current status of the lonc/d
1012: connections, do not send emails do not
1013: check if the daemons are running, do not
1014: generate lon-status
1015: --justcheckdaemons Only check that all of the Lon-CAPA daemons are
1016: running, do not send emails do not
1017: check the lonc/d connections, do not
1018: generate lon-status
1019: --justreload Only tell the daemons to reload the config files,
1020: do not send emails do not
1021: check if the daemons are running, do not
1022: generate lon-status
1023: --justiptables Only update the dynamic iptables rules for the
1024: lond port; do not send emails, do not
1025: check if the daemons are running, do not
1026: generate lon-status
1027: USAGE
1028: }
1029:
1030: # ================================================================ Main Program
1031: sub main () {
1032: my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
1033: $justreload,$justiptables);
1034: &GetOptions("help" => \$help,
1035: "justcheckdaemons" => \$justcheckdaemons,
1036: "noemail" => \$noemail,
1037: "justcheckconnections" => \$justcheckconnections,
1038: "justreload" => \$justreload,
1039: "justiptables" => \$justiptables
1040: );
1041: if ($help) { &usage(); return; }
1042: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
1043: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1044: %perlvar=%{$perlvarref};
1045: undef $perlvarref;
1046: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
1047: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1048: chdir($perlvar{'lonDaemons'});
1049: # --------------------------------------- Make sure that LON-CAPA is configured
1050: # I only test for one thing here (lonHostID). This is just a safeguard.
1051: if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
1052: print("Unconfigured machine.\n");
1053: my $emailto=$perlvar{'lonSysEMail'};
1054: my $hostname = Sys::Hostname::FQDN::fqdn();
1055: $hostname=~s/\.+/./g;
1056: $hostname=~s/\-+/-/g;
1057: $hostname=~s/[^\w\.-]//g; # make sure is safe to pass through shell
1058: my $subj="LON: Unconfigured machine $hostname";
1059: system("echo 'Unconfigured machine $hostname.' |".
1060: " mail -s '$subj' $emailto > /dev/null");
1061: exit 1;
1062: }
1063:
1064: # ----------------------------- Make sure this process is running from user=www
1065: my $wwwid=getpwnam('www');
1066: if ($wwwid!=$<) {
1067: print("User ID mismatch. This program must be run as user 'www'.\n");
1068: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
1069: my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
1070: system("echo 'User ID mismatch. loncron must be run as user www.' |".
1071: " mail -s '$subj' $emailto > /dev/null");
1072: exit 1;
1073: }
1074:
1075: # -------------------------------------------- Force reload of host information
1076: my $nomemcache;
1077: if ($justcheckdaemons) {
1078: $nomemcache=1;
1079: my $memcachepidfile="$perlvar{'lonDaemons'}/logs/memcached.pid";
1080: my $memcachepid;
1081: if (-e $memcachepidfile) {
1082: my $memfh=IO::File->new($memcachepidfile);
1083: $memcachepid=<$memfh>;
1084: chomp($memcachepid);
1085: if ($memcachepid =~ /^\d+$/ && kill 0 => $memcachepid) {
1086: undef($nomemcache);
1087: }
1088: }
1089: }
1090: if (!$justiptables) {
1091: &Apache::lonnet::load_hosts_tab(1,$nomemcache);
1092: &Apache::lonnet::load_domain_tab(1,$nomemcache);
1093: &Apache::lonnet::get_iphost(1,$nomemcache);
1094: }
1095:
1096: # ----------------------------------------- Force firewall update for lond port
1097:
1098: if ((!$justcheckdaemons) && (!$justreload)) {
1099: my $now = time;
1100: my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
1101: $now.$$.int(rand(10000));
1102: if (open(my $fh,">$tmpfile")) {
1103: my %iphosts = &Apache::lonnet::get_iphost();
1104: foreach my $key (keys(%iphosts)) {
1105: print $fh "$key\n";
1106: }
1107: close($fh);
1108: if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) {
1109: my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
1110: system("$execpath $tmpfile");
1111: unlink('/tmp/lock_lciptables'); # Remove the lock file.
1112: }
1113: unlink($tmpfile);
1114: }
1115: }
1116:
1117: # ---------------------------------------------------------------- Start report
1118:
1119: $errors=0;
1120: $warnings=0;
1121: $notices=0;
1122:
1123:
1124: my $fh;
1125: if (!$justcheckdaemons && !$justcheckconnections && !$justreload && !$justiptables) {
1126: $fh=&start_logging();
1127:
1128: &log_machine_info($fh);
1129: &clean_tmp($fh);
1130: &clean_lonIDs($fh);
1131: &clean_balanceIDs($fh);
1132: &clean_webDAV_sessionIDs($fh);
1133: &check_httpd_logs($fh);
1134: &rotate_lonnet_logs($fh);
1135: &rotate_other_logs($fh);
1136: }
1137: if (!$justcheckconnections && !$justreload && !$justiptables) {
1138: &checkon_daemon($fh,'lonmemcached',40000);
1139: &checkon_daemon($fh,'lonsql',200000);
1140: if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
1141: &checkon_daemon($fh,'lond',40000,'USR2');
1142: }
1143: &checkon_daemon($fh,'lonc',40000,'USR1');
1144: &checkon_daemon($fh,'lonmaxima',40000);
1145: &checkon_daemon($fh,'lonr',40000);
1146: }
1147: if ($justreload) {
1148: &checkon_daemon($fh,'lond',40000,'USR2');
1149: &checkon_daemon($fh,'lonc',40000,'USR2');
1150: }
1151: if ($justcheckconnections) {
1152: &test_connections($fh);
1153: }
1154: if (!$justcheckdaemons && !$justcheckconnections && !$justreload && !$justiptables) {
1155: &check_delayed_msg($fh);
1156: &finish_logging($fh);
1157: &log_simplestatus();
1158: &write_loncaparevs();
1159: &write_serverhomeIDs();
1160: &write_checksums();
1161: &write_hostips();
1162: if ($totalcount>200 && !$noemail) { &send_mail(); }
1163: }
1164: }
1165:
1166: &main();
1167: 1;
1168:
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