1: #!/usr/bin/perl
2:
3: # Housekeeping program, started by cron, loncontrol and loncron.pl
4: #
5: # $Id: loncron,v 1.116 2018/12/22 20:05:16 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 LONCAPA::LWPReq;
38: use Apache::lonnet;
39: use Apache::loncommon;
40:
41: use IO::File;
42: use IO::Socket;
43: use HTML::Entities;
44: use Getopt::Long;
45: use GDBM_File;
46: use Storable qw(thaw);
47: use File::ReadBackwards;
48: #globals
49: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
50:
51: my $statusdir="/home/httpd/html/lon-status";
52:
53:
54: # --------------------------------------------------------- Output error status
55:
56: sub log {
57: my $fh=shift;
58: if ($fh) { print $fh @_ }
59: }
60:
61: sub errout {
62: my $fh=shift;
63: &log($fh,(<<ENDERROUT));
64: <table border="2" bgcolor="#CCCCCC">
65: <tr><td>Notices</td><td>$notices</td></tr>
66: <tr><td>Warnings</td><td>$warnings</td></tr>
67: <tr><td>Errors</td><td>$errors</td></tr>
68: </table><p><a href="#top">Top</a></p>
69: ENDERROUT
70: }
71:
72: sub rotate_logfile {
73: my ($file,$fh,$description) = @_;
74: my $size=(stat($file))[7];
75: if ($size>40000) {
76: &log($fh,"<p>Rotating $description ...</p>");
77: rename("$file.2","$file.3");
78: rename("$file.1","$file.2");
79: rename("$file","$file.1");
80: }
81: }
82:
83: sub start_daemon {
84: my ($fh,$daemon,$pidfile,$args) = @_;
85: my $progname=$daemon;
86: if ($daemon eq 'lonc') {
87: $progname='loncnew';
88: }
89: my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
90: &rotate_logfile($error_fname,$fh,'error logs');
91: if ($daemon eq 'lonc') {
92: &clean_sockets($fh);
93: }
94: system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
95: sleep 1;
96: if (-e $pidfile) {
97: &log($fh,"<p>Seems like it started ...</p>");
98: my $lfh=IO::File->new("$pidfile");
99: my $daemonpid=<$lfh>;
100: chomp($daemonpid);
101: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
102: return 1;
103: } else {
104: return 0;
105: }
106: }
107: &log($fh,"<p>Seems like that did not work!</p>");
108: $errors++;
109: return 0;
110: }
111:
112: sub checkon_daemon {
113: my ($fh,$daemon,$maxsize,$send,$args)=@_;
114:
115: my $result;
116: &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
117: printf("%-15s ",$daemon);
118: if ($fh) {
119: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
120: if (open(DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
121: while (my $line=<DFH>) {
122: &log($fh,"$line");
123: if ($line=~/INFO/) { $notices++; }
124: if ($line=~/WARNING/) { $notices++; }
125: if ($line=~/CRITICAL/) { $warnings++; }
126: }
127: close (DFH);
128: }
129: }
130: &log($fh,"</tt></p>");
131: }
132:
133: my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
134:
135: my $restartflag=1;
136: my $daemonpid;
137: if (-e $pidfile) {
138: my $lfh=IO::File->new("$pidfile");
139: $daemonpid=<$lfh>;
140: chomp($daemonpid);
141: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
142: &log($fh,"<h3>$daemon at pid $daemonpid responding");
143: if ($send) { &log($fh,", sending $send"); }
144: &log($fh,"</h3>");
145: if ($send eq 'USR1') { kill USR1 => $daemonpid; }
146: if ($send eq 'USR2') { kill USR2 => $daemonpid; }
147: $restartflag=0;
148: if ($send eq 'USR2') {
149: $result = 'reloaded';
150: print "reloaded\n";
151: } else {
152: $result = 'running';
153: print "running\n";
154: }
155: } else {
156: $errors++;
157: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
158: $restartflag=1;
159: &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
160: }
161: }
162: if ($restartflag==1) {
163: $simplestatus{$daemon}='off';
164: $errors++;
165: my $kadaemon=$daemon;
166: if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
167: &log($fh,'<br /><font color="red">Killall '.$daemon.': '.
168: `killall $kadaemon 2>&1`.' - ');
169: sleep 1;
170: &log($fh,unlink($pidfile).' - '.
171: `killall -9 $kadaemon 2>&1`.
172: '</font><br />');
173: if ($kadaemon eq 'loncnew') {
174: &clean_lonc_childpids();
175: }
176: &log($fh,"<h3>$daemon not running, trying to start</h3>");
177:
178: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
179: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
180: $simplestatus{$daemon}='restarted';
181: $result = 'started';
182: print "started\n";
183: } else {
184: $errors++;
185: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
186: &log($fh,"<p>Give it one more try ...</p>");
187: print " ";
188: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
189: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
190: $simplestatus{$daemon}='restarted';
191: $result = 'started';
192: print "started\n";
193: } else {
194: $result = 'failed';
195: print " failed\n";
196: $simplestatus{$daemon}='failed';
197: $errors++; $errors++;
198: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
199: &log($fh,"<p>Unable to start $daemon</p>");
200: }
201: }
202: if ($fh) {
203: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
204: &log($fh,"<p><pre>");
205: if (open(DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
206: while (my $line=<DFH>) {
207: &log($fh,"$line");
208: if ($line=~/WARNING/) { $notices++; }
209: if ($line=~/CRITICAL/) { $notices++; }
210: }
211: close (DFH);
212: }
213: &log($fh,"</pre></p>");
214: }
215: }
216: }
217:
218: my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
219: &rotate_logfile($fname,$fh,'logs');
220:
221: &errout($fh);
222: return $result;
223: }
224:
225: # --------------------------------------------------------------------- Machine
226: sub log_machine_info {
227: my ($fh)=@_;
228: &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
229: &log($fh,"<h3>loadavg</h3>");
230:
231: open (LOADAVGH,"/proc/loadavg");
232: my $loadavg=<LOADAVGH>;
233: close (LOADAVGH);
234:
235: &log($fh,"<tt>$loadavg</tt>");
236:
237: my @parts=split(/\s+/,$loadavg);
238: if ($parts[1]>4.0) {
239: $errors++;
240: } elsif ($parts[1]>2.0) {
241: $warnings++;
242: } elsif ($parts[1]>1.0) {
243: $notices++;
244: }
245:
246: &log($fh,"<h3>df</h3>");
247: &log($fh,"<pre>");
248:
249: open (DFH,"df|");
250: while (my $line=<DFH>) {
251: &log($fh,&encode_entities($line,'<>&"'));
252: @parts=split(/\s+/,$line);
253: my $usage=$parts[4];
254: $usage=~s/\W//g;
255: if ($usage>90) {
256: $warnings++;
257: $notices++;
258: } elsif ($usage>80) {
259: $warnings++;
260: } elsif ($usage>60) {
261: $notices++;
262: }
263: if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
264: }
265: close (DFH);
266: &log($fh,"</pre>");
267:
268:
269: &log($fh,"<h3>ps</h3>");
270: &log($fh,"<pre>");
271: my $psproc=0;
272:
273: open (PSH,"ps aux --cols 140 |");
274: while (my $line=<PSH>) {
275: &log($fh,&encode_entities($line,'<>&"'));
276: $psproc++;
277: }
278: close (PSH);
279: &log($fh,"</pre>");
280:
281: if ($psproc>200) { $notices++; }
282: if ($psproc>250) { $notices++; }
283:
284: &log($fh,"<h3>distprobe</h3>");
285: &log($fh,"<pre>");
286: &log($fh,&encode_entities(&LONCAPA::distro(),'<>&"'));
287: &log($fh,"</pre>");
288:
289: &errout($fh);
290: }
291:
292: sub start_logging {
293: my $fh=IO::File->new(">$statusdir/newstatus.html");
294: my %simplestatus=();
295: my $now=time;
296: my $date=localtime($now);
297:
298:
299: &log($fh,(<<ENDHEADERS));
300: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
301: <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
302: <head>
303: <title>LON Status Report $perlvar{'lonHostID'}</title>
304: <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
305: </head>
306: <body bgcolor="#AAAAAA">
307: <a name="top" />
308: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
309: <h2>$date ($now)</h2>
310: <ol>
311: <li><a href="#configuration">Configuration</a></li>
312: <li><a href="#machine">Machine Information</a></li>
313: <li><a href="#tmp">Temporary Files</a></li>
314: <li><a href="#tokens">Session Tokens</a></li>
315: <li><a href="#webdav">WebDAV Session Tokens</a></li>
316: <li><a href="#httpd">httpd</a></li>
317: <li><a href="#lonsql">lonsql</a></li>
318: <li><a href="#lond">lond</a></li>
319: <li><a href="#lonc">lonc</a></li>
320: <li><a href="#lonnet">lonnet</a></li>
321: <li><a href="#connections">Connections</a></li>
322: <li><a href="#delayed">Delayed Messages</a></li>
323: <li><a href="#errcount">Error Count</a></li>
324: </ol>
325: <hr />
326: <a name="configuration" />
327: <h2>Configuration</h2>
328: <h3>PerlVars</h3>
329: <table border="2">
330: ENDHEADERS
331:
332: foreach my $varname (sort(keys(%perlvar))) {
333: &log($fh,"<tr><td>$varname</td><td>".
334: &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
335: }
336: &log($fh,"</table><h3>Hosts</h3><table border='2'>");
337: my %hostname = &Apache::lonnet::all_hostnames();
338: foreach my $id (sort(keys(%hostname))) {
339: my $role = (&Apache::lonnet::is_library($id) ? 'library'
340: : 'access');
341: &log($fh,
342: "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
343: "</td><td>".$role.
344: "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
345: }
346: &log($fh,"</table><h3>Spare Hosts</h3>");
347: if (keys(%Apache::lonnet::spareid) > 0) {
348: &log($fh,"<ul>");
349: foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
350: &log($fh,"<li>$type\n<ol>");
351: foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
352: &log($fh,"<li>$id</li>\n");
353: }
354: &log($fh,"</ol>\n</li>\n");
355: }
356: &log($fh,"</ul>\n");
357: } else {
358: &log($fh,"No spare hosts specified<br />\n");
359: }
360: return $fh;
361: }
362:
363: # --------------------------------------------------------------- clean out tmp
364: sub clean_tmp {
365: my ($fh)=@_;
366: &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
367: my ($cleaned,$old,$removed) = (0,0,0);
368: my %errors = (
369: dir => [],
370: file => [],
371: failopen => [],
372: );
373: my %error_titles = (
374: dir => 'failed to remove empty directory:',
375: file => 'failed to unlike stale file',
376: failopen => 'failed to open file or directory'
377: );
378: ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
379: &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
380: foreach my $key (sort(keys(%errors))) {
381: if (ref($errors{$key}) eq 'ARRAY') {
382: if (@{$errors{$key}} > 0) {
383: &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
384: join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
385: }
386: }
387: }
388: }
389:
390: sub recursive_clean_tmp {
391: my ($subdir,$cleaned,$old,$removed,$errors) = @_;
392: my $base = "$perlvar{'lonDaemons'}/tmp";
393: my $path = $base;
394: next if ($subdir =~ m{\.\./});
395: next unless (ref($errors) eq 'HASH');
396: unless ($subdir eq '') {
397: $path .= '/'.$subdir;
398: }
399: if (opendir(my $dh,"$path")) {
400: while (my $file = readdir($dh)) {
401: next if ($file =~ /^\.\.?$/);
402: my $fname = "$path/$file";
403: if (-d $fname) {
404: my $innerdir;
405: if ($subdir eq '') {
406: $innerdir = $file;
407: } else {
408: $innerdir = $subdir.'/'.$file;
409: }
410: ($cleaned,$old,$removed) =
411: &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
412: my @doms = &Apache::lonnet::current_machine_domains();
413:
414: if (open(my $dirhandle,$fname)) {
415: unless (($innerdir eq 'helprequests') ||
416: (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
417: my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
418: join('&&',@contents)."\n";
419: if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
420: closedir($dirhandle);
421: if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
422: if (rmdir($fname)) {
423: $removed ++;
424: } elsif (ref($errors->{dir}) eq 'ARRAY') {
425: push(@{$errors->{dir}},$fname);
426: }
427: }
428: }
429: } else {
430: closedir($dirhandle);
431: }
432: }
433: } else {
434: my ($dev,$ino,$mode,$nlink,
435: $uid,$gid,$rdev,$size,
436: $atime,$mtime,$ctime,
437: $blksize,$blocks)=stat($fname);
438: my $now=time;
439: my $since=$now-$mtime;
440: if ($since>$perlvar{'lonExpire'}) {
441: if ($subdir eq '') {
442: my $line='';
443: if ($fname =~ /\.db$/) {
444: if (unlink($fname)) {
445: $cleaned++;
446: } elsif (ref($errors->{file}) eq 'ARRAY') {
447: push(@{$errors->{file}},$fname);
448: }
449: } elsif (open(PROBE,$fname)) {
450: my $line='';
451: $line=<PROBE>;
452: close(PROBE);
453: if ($line=~/^CHECKOUTTOKEN\&/) {
454: if ($since>365*$perlvar{'lonExpire'}) {
455: if (unlink($fname)) {
456: $cleaned++;
457: } elsif (ref($errors->{file}) eq 'ARRAY') {
458: push(@{$errors->{file}},$fname);
459: }
460: } else {
461: $old++;
462: }
463: } else {
464: if (unlink($fname)) {
465: $cleaned++;
466: } elsif (ref($errors->{file}) eq 'ARRAY') {
467: push(@{$errors->{file}},$fname);
468: }
469: }
470: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
471: push(@{$errors->{failopen}},$fname);
472: }
473: } else {
474: if (unlink($fname)) {
475: $cleaned++;
476: } elsif (ref($errors->{file}) eq 'ARRAY') {
477: push(@{$errors->{file}},$fname);
478: }
479: }
480: }
481: }
482: }
483: closedir($dh);
484: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
485: push(@{$errors->{failopen}},$path);
486: }
487: return ($cleaned,$old,$removed);
488: }
489:
490: # ------------------------------------------------------------ clean out lonIDs
491: sub clean_lonIDs {
492: my ($fh)=@_;
493: &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
494: my $cleaned=0;
495: my $active=0;
496: while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
497: my ($dev,$ino,$mode,$nlink,
498: $uid,$gid,$rdev,$size,
499: $atime,$mtime,$ctime,
500: $blksize,$blocks)=stat($fname);
501: my $now=time;
502: my $since=$now-$mtime;
503: if ($since>$perlvar{'lonExpire'}) {
504: $cleaned++;
505: &log($fh,"Unlinking $fname<br />");
506: unlink("$fname");
507: } else {
508: $active++;
509: }
510: }
511: &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
512: &log($fh,"<h3>$active open session(s)</h3>");
513: }
514:
515: # -------------------------------------------------------- clean out balanceIDs
516:
517: sub clean_balanceIDs {
518: my ($fh)=@_;
519: &log($fh,'<hr /><a name="balcookies" /><h2>Session Tokens</h2>');
520: my $cleaned=0;
521: my $active=0;
522: if (-d $perlvar{'lonBalanceDir'}) {
523: while (my $fname=<$perlvar{'balanceDir'}/*.id>) {
524: my ($dev,$ino,$mode,$nlink,
525: $uid,$gid,$rdev,$size,
526: $atime,$mtime,$ctime,
527: $blksize,$blocks)=stat($fname);
528: my $now=time;
529: my $since=$now-$mtime;
530: if ($since>$perlvar{'lonExpire'}) {
531: $cleaned++;
532: &log($fh,"Unlinking $fname<br />");
533: unlink("$fname");
534: } else {
535: $active++;
536: }
537: }
538: }
539: &log($fh,"<p>Cleaned up ".$cleaned." stale balancer files</p>");
540: &log($fh,"<h3>$active unexpired balancer files</h3>");
541: }
542:
543: # ------------------------------------------------ clean out webDAV Session IDs
544: sub clean_webDAV_sessionIDs {
545: my ($fh)=@_;
546: if ($perlvar{'lonRole'} eq 'library') {
547: &log($fh,'<hr /><a name="webdav" /><h2>WebDAV Session Tokens</h2>');
548: my $cleaned=0;
549: my $active=0;
550: my $now = time;
551: if (-d $perlvar{'lonDAVsessDir'}) {
552: while (my $fname=<$perlvar{'lonDAVsessDir'}/*>) {
553: my @stats = stat($fname);
554: my $since=$now-$stats[9];
555: if ($since>$perlvar{'lonExpire'}) {
556: $cleaned++;
557: &log($fh,"Unlinking $fname<br />");
558: unlink("$fname");
559: } else {
560: $active++;
561: }
562: }
563: &log($fh,"<p>Cleaned up ".$cleaned." stale webDAV session token(s).</p>");
564: &log($fh,"<h3>$active open webDAV session(s)</h3>");
565: }
566: }
567: }
568:
569: # ----------------------------------------------------------- clean out sockets
570: sub clean_sockets {
571: my ($fh)=@_;
572: my $cleaned=0;
573: opendir(SOCKETS,$perlvar{'lonSockDir'});
574: while (my $fname=readdir(SOCKETS)) {
575: next if (-d $fname
576: || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
577: $cleaned++;
578: &log($fh,"Unlinking $fname<br />");
579: unlink("/home/httpd/sockets/$fname");
580: }
581: &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
582: }
583:
584:
585: # ----------------------------------------------------------------------- httpd
586: sub check_httpd_logs {
587: my ($fh)=@_;
588: if (open(PIPE,"./lchttpdlogs|")) {
589: while (my $line=<PIPE>) {
590: &log($fh,$line);
591: if ($line=~/\[error\]/) { $notices++; }
592: }
593: close(PIPE);
594: }
595: &errout($fh);
596: }
597:
598: # ---------------------------------------------------------------------- lonnet
599:
600: sub rotate_lonnet_logs {
601: my ($fh)=@_;
602: &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
603: print "Checking logs.\n";
604: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
605: open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
606: while (my $line=<DFH>) {
607: &log($fh,&encode_entities($line,'<>&"'));
608: }
609: close (DFH);
610: }
611: &log($fh,"</pre><h3>Perm Log</h3><pre>");
612:
613: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
614: open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
615: while (my $line=<DFH>) {
616: &log($fh,&encode_entities($line,'<>&"'));
617: }
618: close (DFH);
619: } else { &log($fh,"No perm log\n") }
620:
621: my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
622: &rotate_logfile($fname,$fh,'lonnet log');
623:
624: &log($fh,"</pre>");
625: &errout($fh);
626: }
627:
628: sub rotate_other_logs {
629: my ($fh) = @_;
630: my %logs = (
631: autoenroll => 'Auto Enroll log',
632: autocreate => 'Create Course log',
633: searchcat => 'Search Cataloguing log',
634: autoupdate => 'Auto Update log',
635: refreshcourseids_db => 'Refresh CourseIDs db log',
636: );
637: foreach my $item (keys(%logs)) {
638: my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
639: &rotate_logfile($fname,$fh,$logs{$item});
640: }
641: }
642:
643: # ----------------------------------------------------------------- Connections
644: sub test_connections {
645: my ($fh)=@_;
646: &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
647: print "Testing connections.\n";
648: &log($fh,"<table border='2'>");
649: my ($good,$bad)=(0,0);
650: my %hostname = &Apache::lonnet::all_hostnames();
651: foreach my $tryserver (sort(keys(%hostname))) {
652: print(".");
653: my $result;
654: my $answer=&Apache::lonnet::reply("ping",$tryserver);
655: if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
656: $result="<b>ok</b>";
657: $good++;
658: } else {
659: $result=$answer;
660: $warnings++;
661: if ($answer eq 'con_lost') {
662: $bad++;
663: $warnings++;
664: } else {
665: $good++; #self connection
666: }
667: }
668: if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
669: &log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
670: }
671: &log($fh,"</table>");
672: print "\n$good good, $bad bad connections\n";
673: &errout($fh);
674: }
675:
676:
677: # ------------------------------------------------------------ Delayed messages
678: sub check_delayed_msg {
679: my ($fh,$weightsref,$exclusionsref)=@_;
680: &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
681: print "Checking buffers.\n";
682:
683: &log($fh,'<h3>Scanning Permanent Log</h3>');
684:
685: my $unsend=0;
686: my $ignored=0;
687:
688: my %hostname = &Apache::lonnet::all_hostnames();
689: my $numhosts = scalar(keys(%hostname));
690: my $checkbackwards = 0;
691: my $checkfrom = 0;
692: my $checkexcluded = 0;
693: my (%bymachine,%weights,%exclusions,%serverhomes);
694: if (ref($weightsref) eq 'HASH') {
695: %weights = %{$weightsref};
696: }
697: if (ref($exclusionsref) eq 'HASH') {
698: %exclusions = %{$exclusionsref};
699: if (keys(%exclusions)) {
700: $checkexcluded = 1;
701: %serverhomes = &read_serverhomeIDs();
702: }
703: }
704:
705: #
706: # For LON-CAPA 1.2.0 to 2.1.3 (release dates: 8/31/2004 and 3/31/2006) any
707: # entry logged in lonnet.perm.log for completion of a delayed (critical)
708: # transaction lacked the hostID for the remote node to which the command
709: # to be completed was sent.
710: #
711: # Because of this, exclusion of items in lonnet.perm.log for nodes which are
712: # no longer part of the cluster from adding to the overall "unsend" count
713: # needs additional effort besides the changes made in loncron rev. 1.105.
714: #
715: # For "S" (completion) events logging in LON-CAPA 1.2.0 through 2.1.3 included
716: # "LondTransaction=HASH(hexadecimal)->getClient() :$cmd, where the hexadecimal
717: # is a memory location, and $cmd is the command sent to the remote node.
718: #
719: # Starting with 2.2.0 (released 8/21/2006) logging for "S" (completion) events
720: # had sethost:$host_id:$cmd after LondTransaction=HASH(hexadecimal)->getClient()
721: #
722: # Starting with 2.4.1 (released 6/13/2007) logging for "S" replaced echoing the
723: # getClient() call with the result of the Transaction->getClient() call itself
724: # undef for completion of delivery of a delayed message.
725: #
726: # The net effect of these changes is that lonnet.perm.log is now accessed three
727: # times: (a) oldest record is checked, if earlier than release date for 2.5.0
728: # then (b) file is read backwards, with timestamp recorded for most recent
729: # instance of logged "S" event for "update" command without "sethost:$host_id:"
730: # then (c) file is read forward with records ignored which predate the timestamp
731: # recorded in (b), if one was found.
732: #
733: # In (c), when calculating the unsend total, i.e., the difference between delayed
734: # transactions ("D") and sent transactions ("S"), transactions are ignored if the
735: # target node is no longer in the cluster, and also (for "update" commands), if
736: # the target node is in the list of nodes excluded from the count, in the domain
737: # configuration for this machine's default domain. The idea here is to remove
738: # delayed "update" commands for nodes for which inbound access to port 5663,
739: # is blocked, but are still part of the LON-CAPA network, (i.e., they can still
740: # replicate content from other nodes).
741: #
742:
743: my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
744: if (defined($dfh)) {
745: while (my $line=<$dfh>) {
746: my ($time,$sdf,$rest)=split(/:/,$line,3);
747: if ($time < 1541185772) {
748: $checkbackwards = 1;
749: }
750: last;
751: }
752: undef $dfh;
753: }
754:
755: if ($checkbackwards) {
756: if (tie *BW, 'File::ReadBackwards', "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
757: while(my $line=<BW>) {
758: if ($line =~ /\QLondTransaction=HASH\E[^:]+:update:/) {
759: ($checkfrom) = split(/:/,$line,2);
760: last;
761: }
762: }
763: close(BW);
764: }
765: }
766: $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
767: if (defined($dfh)) {
768: while (my $line=<$dfh>) {
769: my ($time,$sdf,$rest)=split(/:/,$line,3);
770: next unless (($sdf eq 'F') || ($sdf eq 'S') || ($sdf eq 'D'));
771: next if (($checkfrom) && ($time <= $checkfrom));
772: my ($dserv,$dcmd);
773: if ($sdf eq 'S') {
774: my ($serva,$cmda,$servb,$cmdb) = split(/:/,$rest);
775: if ($cmda eq 'sethost') {
776: chomp($cmdb);
777: $dcmd = $cmdb;
778: } else {
779: $dcmd = $cmda;
780: }
781: if (($serva =~ /^LondTransaction/) || ($serva eq '')) {
782: unless (($servb eq '') || ($servb =~ m{^/})) {
783: $dserv = $servb;
784: }
785: } else {
786: $dserv = $serva;
787: }
788: } else {
789: ($dserv,$dcmd) = split(/:/,$rest);
790: }
791: if ($sdf eq 'F') {
792: my $local=localtime($time);
793: &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br />");
794: $warnings++;
795: }
796: next if ((($dserv eq '') || ($dcmd eq '')) && ($sdf ne 'F'));
797: if ($sdf eq 'S') {
798: if ($dcmd eq 'update') {
799: if ($hostname{$dserv}) {
800: if ($exclusions{$serverhomes{$hostname{$dserv}}}) {
801: $ignored --;
802: } else {
803: $unsend --;
804: }
805: }
806: if (exists($bymachine{$dserv})) {
807: $bymachine{$dserv} --;
808: } else {
809: $bymachine{$dserv} = -1;
810: }
811: } else {
812: if ($hostname{$dserv}) {
813: $unsend --;
814: }
815: }
816: } elsif ($sdf eq 'D') {
817: if ($dcmd eq 'update') {
818: if ($hostname{$dserv}) {
819: if ($exclusions{$serverhomes{$hostname{$dserv}}}) {
820: $ignored ++;
821: } else {
822: $unsend ++;
823: }
824: }
825: if (exists($bymachine{$dserv})) {
826: $bymachine{$dserv} ++;
827: } else {
828: $bymachine{$dserv} = 1;
829: }
830: } else {
831: if ($hostname{$dserv}) {
832: $unsend ++;
833: }
834: }
835: }
836: }
837: undef $dfh;
838: my $nodest = 0;
839: my $retired = 0;
840: my %active;
841: if (keys(%bymachine)) {
842: unless ($checkexcluded) {
843: %serverhomes = &read_serverhomeIDs();
844: }
845: foreach my $key (keys(%bymachine)) {
846: if ($bymachine{$key} > 0) {
847: if ($hostname{$key}) {
848: $active{$serverhomes{$hostname{$key}}} += $bymachine{$key};
849: } else {
850: $retired ++;
851: $nodest += $bymachine{$key};
852: }
853: }
854: }
855: }
856: if (keys(%active)) {
857: &log($fh,"<p>Unsend messages by node, active (undegraded) nodes in cluster</p>\n");
858: foreach my $key (sort(keys(%active))) {
859: &log($fh,&encode_entities("$key => $active{$key}",'<>&"')."\n");
860: }
861: }
862: &log($fh,"<p>Total unsend messages: <b>$unsend</b> for ".scalar(keys(%active))." active (undegraded) nodes in cluster.</p>\n");
863: if (keys(%exclusions) > 0) {
864: &log($fh,"<p>Total incomplete updates <b>$ignored</b> for ".scalar(keys(%exclusions))." degraded nodes in cluster.</p>\n");
865: }
866: if ($retired) {
867: &log($fh,"<p>Total unsent <b>$nodest</b> for $retired nodes no longer in cluster.</p>\n");
868: }
869: if ($unsend > 0) {
870: $warnings=$warnings+$weights{'U'}*$unsend;
871: }
872: }
873:
874: if ($unsend) { $simplestatus{'unsend'}=$unsend; }
875: &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
876: # list directory with delayed messages and remember offline servers
877: my %servers=();
878: open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
879: while (my $line=<DFH>) {
880: my ($server)=($line=~/\.(\w+)$/);
881: if ($server) { $servers{$server}=1; }
882: &log($fh,&encode_entities($line,'<>&"'));
883: }
884: &log($fh,"</pre>\n");
885: close (DFH);
886: # pong to all servers that have delayed messages
887: # this will trigger a reverse connection, which should flush the buffers
888: foreach my $tryserver (sort(keys(%servers))) {
889: if ($hostname{$tryserver} || !$numhosts) {
890: my $answer;
891: eval {
892: local $SIG{ ALRM } = sub { die "TIMEOUT" };
893: alarm(20);
894: $answer = &Apache::lonnet::reply("pong",$tryserver);
895: alarm(0);
896: };
897: if ($@ && $@ =~ m/TIMEOUT/) {
898: &log($fh,"Attempted pong to $tryserver timed out<br />");
899: print "Time out while contacting: $tryserver for pong.\n";
900: } else {
901: &log($fh,"Pong to $tryserver: $answer<br />");
902: }
903: } else {
904: &log($fh,"$tryserver has delayed messages, but is not part of the cluster -- skipping 'Pong'.<br />");
905: }
906: }
907: }
908:
909: sub finish_logging {
910: my ($fh,$weightsref)=@_;
911: my %weights;
912: if (ref($weightsref) eq 'HASH') {
913: %weights = %{$weightsref};
914: }
915: &log($fh,"<a name='errcount' />\n");
916: $totalcount=($weights{'N'}*$notices)+($weights{'W'}*$warnings)+($weights{'E'}*$errors);
917: &errout($fh);
918: &log($fh,"<h1>Total Error Count: $totalcount</h1>");
919: my $now=time;
920: my $date=localtime($now);
921: &log($fh,"<hr />$date ($now)</body></html>\n");
922: print "lon-status webpage updated.\n";
923: $fh->close();
924:
925: if ($errors) { $simplestatus{'errors'}=$errors; }
926: if ($warnings) { $simplestatus{'warnings'}=$warnings; }
927: if ($notices) { $simplestatus{'notices'}=$notices; }
928: $simplestatus{'time'}=time;
929: }
930:
931: sub log_simplestatus {
932: rename("$statusdir/newstatus.html","$statusdir/index.html");
933:
934: my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
935: foreach (keys %simplestatus) {
936: print $sfh $_.'='.$simplestatus{$_}.'&';
937: }
938: print $sfh "\n";
939: $sfh->close();
940: }
941:
942: sub write_loncaparevs {
943: print "Retrieving LON-CAPA version information.\n";
944: my %hostname = &Apache::lonnet::all_hostnames();
945: my $output;
946: foreach my $id (sort(keys(%hostname))) {
947: if ($id ne '') {
948: my $loncaparev;
949: eval {
950: local $SIG{ ALRM } = sub { die "TIMEOUT" };
951: alarm(10);
952: $loncaparev =
953: &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
954: alarm(0);
955: };
956: if ($@ && $@ =~ m/TIMEOUT/) {
957: print "Time out while contacting lonHost: $id for version.\n";
958: }
959: if ($loncaparev =~ /^[\w.\-]+$/) {
960: $output .= $id.':'.$loncaparev."\n";
961: }
962: }
963: }
964: if ($output) {
965: if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
966: print $fh $output;
967: close($fh);
968: &Apache::lonnet::load_loncaparevs();
969: }
970: }
971: return;
972: }
973:
974: sub write_serverhomeIDs {
975: print "Retrieving LON-CAPA lonHostID information.\n";
976: my %name_to_host = &Apache::lonnet::all_names();
977: my $output;
978: foreach my $name (sort(keys(%name_to_host))) {
979: if ($name ne '') {
980: if (ref($name_to_host{$name}) eq 'ARRAY') {
981: my $serverhomeID;
982: eval {
983: local $SIG{ ALRM } = sub { die "TIMEOUT" };
984: alarm(10);
985: $serverhomeID =
986: &Apache::lonnet::get_server_homeID($name,1,'loncron');
987: alarm(0);
988: };
989: if ($@ && $@ =~ m/TIMEOUT/) {
990: print "Time out while contacting server: $name\n";
991: }
992: if ($serverhomeID ne '') {
993: $output .= $name.':'.$serverhomeID."\n";
994: } else {
995: $output .= $name.':'.$name_to_host{$name}->[0]."\n";
996: }
997: }
998: }
999: }
1000: if ($output) {
1001: if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
1002: print $fh $output;
1003: close($fh);
1004: &Apache::lonnet::load_serverhomeIDs();
1005: }
1006: }
1007: return;
1008: }
1009:
1010: sub write_checksums {
1011: my $distro = &LONCAPA::distro();
1012: if ($distro) {
1013: print "Retrieving file version and checksumming.\n";
1014: my $numchksums = 0;
1015: my ($chksumsref,$versionsref) =
1016: &LONCAPA::Checksumming::get_checksums($distro,$perlvar{'lonDaemons'},
1017: $perlvar{'lonLib'},
1018: $perlvar{'lonIncludes'},
1019: $perlvar{'lonTabDir'});
1020: if (ref($chksumsref) eq 'HASH') {
1021: $numchksums = scalar(keys(%{$chksumsref}));
1022: }
1023: print "File version retrieved and checksumming completed for $numchksums files.\n";
1024: } else {
1025: print "File version retrieval and checksumming skipped - could not determine Linux distro.\n";
1026: }
1027: return;
1028: }
1029:
1030: sub clean_nosslverify {
1031: my ($fh) = @_;
1032: my %unlinked;
1033: if (-d "$perlvar{'lonSockDir'}/nosslverify") {
1034: if (opendir(my $dh,"$perlvar{'lonSockDir'}/nosslverify")) {
1035: while (my $fname=readdir($dh)) {
1036: next if ($fname =~ /^\.+$/);
1037: if (unlink("/home/httpd/sockets/nosslverify/$fname")) {
1038: &log($fh,"Unlinking $fname<br />");
1039: $unlinked{$fname} = 1;
1040: }
1041: }
1042: closedir($dh);
1043: }
1044: }
1045: &log($fh,"<p>Removed ".scalar(keys(%unlinked))." nosslverify clients</p>");
1046: return %unlinked;
1047: }
1048: sub clean_lonc_childpids {
1049: my $childpiddir = "$perlvar{'lonDocRoot'}/lon-status/loncchld";
1050: if (-d $childpiddir) {
1051: if (opendir(my $dh,$childpiddir)) {
1052: while (my $fname=readdir($dh)) {
1053: next if ($fname =~ /^\.+$/);
1054: unlink("$childpiddir/$fname");
1055: }
1056: closedir($dh);
1057: }
1058: }
1059: }
1060:
1061: sub write_connection_config {
1062: my ($domconf,%connectssl,%changes);
1063: $domconf = &get_domain_config();
1064: if (ref($domconf) eq 'HASH') {
1065: if (ref($domconf->{'ssl'}) eq 'HASH') {
1066: foreach my $connect ('connto','connfrom') {
1067: if (ref($domconf->{'ssl'}->{$connect}) eq 'HASH') {
1068: my ($sslreq,$sslnoreq,$currsetting);
1069: my %contypes;
1070: foreach my $type ('dom','intdom','other') {
1071: $connectssl{$connect.'_'.$type} = $domconf->{'ssl'}->{$connect}->{$type};
1072: }
1073: }
1074: }
1075: }
1076: if (keys(%connectssl)) {
1077: my %currconf;
1078: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/connectionrules.tab")) {
1079: while (my $line = <$fh>) {
1080: chomp($line);
1081: my ($name,$value) = split(/=/,$line);
1082: if ($value =~ /^(?:no|yes|req)$/) {
1083: if ($name =~ /^conn(to|from)_(dom|intdom|other)$/) {
1084: $currconf{$name} = $value;
1085: }
1086: }
1087: }
1088: close($fh);
1089: }
1090: if (open(my $fh,'>',"$perlvar{'lonTabDir'}/connectionrules.tab")) {
1091: my $count = 0;
1092: foreach my $key (sort(keys(%connectssl))) {
1093: print $fh "$key=$connectssl{$key}\n";
1094: if (exists($currconf{$key})) {
1095: unless ($currconf{$key} eq $connectssl{$key}) {
1096: $changes{$key} = 1;
1097: }
1098: } else {
1099: $changes{$key} = 1;
1100: }
1101: $count ++;
1102: }
1103: close($fh);
1104: print "Completed writing SSL options for lonc/lond for $count items.\n";
1105: }
1106: } else {
1107: print "Writing of SSL options skipped - no connection rules in domain configuration.\n";
1108: }
1109: } else {
1110: print "Retrieval of SSL options for lonc/lond skipped - no configuration data available for domain.\n";
1111: }
1112: return %changes;
1113: }
1114:
1115: sub get_domain_config {
1116: my ($dom,$primlibserv,$isprimary,$url,%confhash);
1117: $dom = $perlvar{'lonDefDomain'};
1118: $primlibserv = &Apache::lonnet::domain($dom,'primary');
1119: if ($primlibserv eq $perlvar{'lonHostID'}) {
1120: $isprimary = 1;
1121: } elsif ($primlibserv ne '') {
1122: my $protocol = $Apache::lonnet::protocol{$primlibserv};
1123: my $hostname = &Apache::lonnet::hostname($primlibserv);
1124: unless ($protocol eq 'https') {
1125: $protocol = 'http';
1126: }
1127: $url = $protocol.'://'.$hostname.'/cgi-bin/listdomconfig.pl?primary='.$primlibserv.'&format=raw';
1128: }
1129: if ($isprimary) {
1130: my $lonusersdir = $perlvar{'lonUsersDir'};
1131: my $fname = $lonusersdir.'/'.$dom.'/configuration.db';
1132: if (-e $fname) {
1133: my $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER());
1134: if (ref($dbref) eq 'HASH') {
1135: foreach my $key (sort(keys(%{$dbref}))) {
1136: my $value = $dbref->{$key};
1137: if ($value =~ s/^__FROZEN__//) {
1138: $value = thaw(&LONCAPA::unescape($value));
1139: } else {
1140: $value = &LONCAPA::unescape($value);
1141: }
1142: $confhash{$key} = $value;
1143: }
1144: &LONCAPA::locking_hash_untie($dbref);
1145: }
1146: }
1147: } else {
1148: my $request=new HTTP::Request('GET',$url);
1149: my $response=&LONCAPA::LWPReq::makerequest($primlibserv,$request,'',\%perlvar,5);
1150: unless ($response->is_error()) {
1151: my $content = $response->content;
1152: if ($content) {
1153: my @pairs=split(/\&/,$content);
1154: foreach my $item (@pairs) {
1155: my ($key,$value)=split(/=/,$item,2);
1156: my $what = &LONCAPA::unescape($key);
1157: if ($value =~ s/^__FROZEN__//) {
1158: $value = thaw(&LONCAPA::unescape($value));
1159: } else {
1160: $value = &LONCAPA::unescape($value);
1161: }
1162: $confhash{$what}=$value;
1163: }
1164: }
1165: }
1166: }
1167: return \%confhash;
1168: }
1169:
1170: sub write_hosttypes {
1171: my %intdom = &Apache::lonnet::all_host_intdom();
1172: my %hostdom = &Apache::lonnet::all_host_domain();
1173: my $dom = $hostdom{$perlvar{'lonHostID'}};
1174: my $internetdom = $intdom{$perlvar{'lonHostID'}};
1175: my %changes;
1176: if (($dom ne '') && ($internetdom ne '')) {
1177: if (keys(%hostdom)) {
1178: my %currhosttypes;
1179: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/hosttypes.tab")) {
1180: while (my $line = <$fh>) {
1181: chomp($line);
1182: my ($name,$value) = split(/:/,$line);
1183: if (($name ne '') && ($value =~ /^(dom|intdom|other)$/)) {
1184: $currhosttypes{$name} = $value;
1185: }
1186: }
1187: close($fh);
1188: }
1189: if (open(my $fh,'>',"$perlvar{'lonTabDir'}/hosttypes.tab")) {
1190: my $count = 0;
1191: foreach my $lonid (sort(keys(%hostdom))) {
1192: my $type = 'other';
1193: if ($hostdom{$lonid} eq $dom) {
1194: $type = 'dom';
1195: } elsif ($intdom{$lonid} eq $internetdom) {
1196: $type = 'intdom';
1197: }
1198: print $fh "$lonid:$type\n";
1199: if (exists($currhosttypes{$lonid})) {
1200: if ($type ne $currhosttypes{$lonid}) {
1201: $changes{$lonid} = 1;
1202: }
1203: } else {
1204: $changes{$lonid} = 1;
1205: }
1206: $count ++;
1207: }
1208: close($fh);
1209: print "Completed writing host type data for $count hosts.\n";
1210: }
1211: } else {
1212: print "Writing of host types skipped - no hosts found.\n";
1213: }
1214: } else {
1215: print "Writing of host types skipped - could not determine this host's LON-CAPA domain or 'internet' domain.\n";
1216: }
1217: return %changes;
1218: }
1219:
1220: sub update_revocation_list {
1221: my ($result,$changed) = &Apache::lonnet::fetch_crl_pemfile();
1222: if ($result eq 'ok') {
1223: print "Certificate Revocation List (from CA) updated.\n";
1224: } else {
1225: print "Certificate Revocation List from (CA) not updated.\n";
1226: }
1227: return $changed;
1228: }
1229:
1230: sub reset_nosslverify_pids {
1231: my ($fh,%sslrem) = @_;
1232: &checkon_daemon($fh,'lond',40000,'USR2');
1233: my $loncpidfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1234: my $loncppid;
1235: if ((-e $loncpidfile) && (open(my $pfh,'<',$loncpidfile))) {
1236: $loncppid=<$pfh>;
1237: chomp($loncppid);
1238: close($pfh);
1239: if ($loncppid =~ /^\d+$/) {
1240: my %pids_by_host;
1241: my $docdir = $perlvar{'lonDocRoot'};
1242: if (-d "$docdir/lon-status/loncchld") {
1243: if (opendir(my $dh,"$docdir/lon-status/loncchld")) {
1244: while (my $file = readdir($dh)) {
1245: next if ($file =~ /^\./);
1246: if (open(my $fh,'<',"$docdir/lon-status/loncchld/$file")) {
1247: my $record = <$fh>;
1248: chomp($record);
1249: close($fh);
1250: my ($remotehost,$authmode) = split(/:/,$record);
1251: $pids_by_host{$remotehost}{$authmode}{$file} = 1;
1252: }
1253: }
1254: closedir($dh);
1255: if (keys(%pids_by_host)) {
1256: foreach my $host (keys(%pids_by_host)) {
1257: if ($sslrem{$host}) {
1258: if (ref($pids_by_host{$host}) eq 'HASH') {
1259: if (ref($pids_by_host{$host}{'insecure'}) eq 'HASH') {
1260: if (keys(%{$pids_by_host{$host}{'insecure'}})) {
1261: foreach my $pid (keys(%{$pids_by_host{$host}{'insecure'}})) {
1262: if (open(PIPE,"ps -o ppid= -p $pid |")) {
1263: my $ppid = <PIPE>;
1264: chomp($ppid);
1265: close(PIPE);
1266: $ppid =~ s/(^\s+|\s+$)//g;
1267: if (($ppid == $loncppid) && (kill 0 => $pid)) {
1268: kill QUIT => $pid;
1269: }
1270: }
1271: }
1272: }
1273: }
1274: }
1275: }
1276: }
1277: }
1278: }
1279: }
1280: }
1281: }
1282: return;
1283: }
1284:
1285: sub get_permcount_settings {
1286: my ($domconf) = @_;
1287: my ($defaults,$names) = &Apache::loncommon::lon_status_items();
1288: my (%weights,$threshold,$sysmail,$reportstatus,%exclusions);
1289: foreach my $type ('E','W','N','U') {
1290: $weights{$type} = $defaults->{$type};
1291: }
1292: $threshold = $defaults->{'threshold'};
1293: $sysmail = $defaults->{'sysmail'};
1294: $reportstatus = 1;
1295: if (ref($domconf) eq 'HASH') {
1296: if (ref($domconf->{'contacts'}) eq 'HASH') {
1297: if ($domconf->{'contacts'}{'reportstatus'} == 0) {
1298: $reportstatus = 0;
1299: }
1300: if (ref($domconf->{'contacts'}{'lonstatus'}) eq 'HASH') {
1301: if (ref($domconf->{'contacts'}{'lonstatus'}{weights}) eq 'HASH') {
1302: foreach my $type ('E','W','N','U') {
1303: if (exists($domconf->{'contacts'}{'lonstatus'}{weights}{$type})) {
1304: $weights{$type} = $domconf->{'contacts'}{'lonstatus'}{weights}{$type};
1305: }
1306: }
1307: }
1308: if (ref($domconf->{'contacts'}{'lonstatus'}{'excluded'}) eq 'ARRAY') {
1309: my @excluded = @{$domconf->{'contacts'}{'lonstatus'}{'excluded'}};
1310: if (@excluded) {
1311: map { $exclusions{$_} = 1; } @excluded;
1312: }
1313: }
1314: if (exists($domconf->{'contacts'}{'lonstatus'}{'threshold'})) {
1315: $threshold = $domconf->{'contacts'}{'lonstatus'}{'threshold'};
1316: }
1317: if (exists($domconf->{'contacts'}{'lonstatus'}{'sysmail'})) {
1318: $sysmail = $domconf->{'contacts'}{'lonstatus'}{'sysmail'};
1319: }
1320: }
1321: }
1322: }
1323: return ($threshold,$sysmail,$reportstatus,\%weights,\%exclusions);
1324: }
1325:
1326: sub read_serverhomeIDs {
1327: my %server;
1328: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
1329: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
1330: while (<$fh>) {
1331: my($host,$id) = split(/:/);
1332: chomp($id);
1333: $server{$host} = $id;
1334: }
1335: close($fh);
1336: }
1337: }
1338: return %server;
1339: }
1340:
1341: sub send_mail {
1342: my ($sysmail,$reportstatus) = @_;
1343: my $defdom = $perlvar{'lonDefDomain'};
1344: my $origmail = $perlvar{'lonAdmEMail'};
1345: my $emailto = &Apache::loncommon::build_recipient_list(undef,
1346: 'lonstatusmail',$defdom,$origmail);
1347: if (($totalcount>$sysmail) && ($reportstatus)) {
1348: $emailto.=",$perlvar{'lonSysEMail'}";
1349: }
1350: my $from;
1351: my $hostname=`/bin/hostname`;
1352: chop($hostname);
1353: $hostname=~s/[^\w\.]//g;
1354: if ($hostname) {
1355: $from = 'www@'.$hostname;
1356: }
1357: my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices";
1358: my $loncronmail = "To: $emailto\n".
1359: "From: $from\n".
1360: "Subject: ".$subj."\n".
1361: "Content-type: text/html\; charset=UTF-8\n".
1362: "MIME-Version: 1.0\n\n";
1363: if (open(my $fh,"<$statusdir/index.html")) {
1364: while (<$fh>) {
1365: $loncronmail .= $_;
1366: }
1367: close($fh);
1368: } else {
1369: $loncronmail .= "Failed to read from http://$hostname/lon-status/index.html\n";
1370: }
1371: $loncronmail .= "\n\n";
1372: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
1373: print $mailh $loncronmail;
1374: close($mailh);
1375: print "Sending mail.\n";
1376: } else {
1377: print "Sending mail failed.\n";
1378: }
1379: }
1380:
1381: sub usage {
1382: print(<<USAGE);
1383: loncron - housekeeping program that checks up on various parts of LON-CAPA
1384:
1385: Options:
1386: --help Display
1387: --noemail Do not send the status email
1388: --justcheckconnections Only check the current status of the lonc/d
1389: connections, do not send emails do not
1390: check if the daemons are running, do not
1391: generate lon-status
1392: --justcheckdaemons Only check that all of the Lon-CAPA daemons are
1393: running, do not send emails do not
1394: check the lonc/d connections, do not
1395: generate lon-status
1396: --justreload Only tell the daemons to reload the config files,
1397: do not send emails do not
1398: check if the daemons are running, do not
1399: generate lon-status
1400:
1401: USAGE
1402: }
1403:
1404: # ================================================================ Main Program
1405: sub main () {
1406: my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
1407: $justreload);
1408: &GetOptions("help" => \$help,
1409: "justcheckdaemons" => \$justcheckdaemons,
1410: "noemail" => \$noemail,
1411: "justcheckconnections" => \$justcheckconnections,
1412: "justreload" => \$justreload
1413: );
1414: if ($help) { &usage(); return; }
1415: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
1416: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1417: %perlvar=%{$perlvarref};
1418: undef $perlvarref;
1419: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
1420: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1421: chdir($perlvar{'lonDaemons'});
1422: # --------------------------------------- Make sure that LON-CAPA is configured
1423: # I only test for one thing here (lonHostID). This is just a safeguard.
1424: if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
1425: print("Unconfigured machine.\n");
1426: my $emailto=$perlvar{'lonSysEMail'};
1427: my $hostname=`/bin/hostname`;
1428: chop $hostname;
1429: $hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell
1430: my $subj="LON: Unconfigured machine $hostname";
1431: system("echo 'Unconfigured machine $hostname.' |".
1432: " mail -s '$subj' $emailto > /dev/null");
1433: exit 1;
1434: }
1435:
1436: # ----------------------------- Make sure this process is running from user=www
1437: my $wwwid=getpwnam('www');
1438: if ($wwwid!=$<) {
1439: print("User ID mismatch. This program must be run as user 'www'.\n");
1440: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
1441: my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
1442: system("echo 'User ID mismatch. loncron must be run as user www.' |".
1443: " mail -s '$subj' $emailto > /dev/null");
1444: exit 1;
1445: }
1446:
1447: # -------------------------------------------- Force reload of host information
1448: my $nomemcache;
1449: if ($justcheckdaemons) {
1450: $nomemcache=1;
1451: my $memcachepidfile="$perlvar{'lonDaemons'}/logs/memcached.pid";
1452: my $memcachepid;
1453: if (-e $memcachepidfile) {
1454: my $memfh=IO::File->new($memcachepidfile);
1455: $memcachepid=<$memfh>;
1456: chomp($memcachepid);
1457: if ($memcachepid =~ /^\d+$/ && kill 0 => $memcachepid) {
1458: undef($nomemcache);
1459: }
1460: }
1461: }
1462: &Apache::lonnet::load_hosts_tab(1,$nomemcache);
1463: &Apache::lonnet::load_domain_tab(1,$nomemcache);
1464: &Apache::lonnet::get_iphost(1,$nomemcache);
1465:
1466: # ----------------------------------------- Force firewall update for lond port
1467:
1468: if ((!$justcheckdaemons) && (!$justreload)) {
1469: my $now = time;
1470: my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
1471: $now.$$.int(rand(10000));
1472: if (open(my $fh,">$tmpfile")) {
1473: my %iphosts = &Apache::lonnet::get_iphost();
1474: foreach my $key (keys(%iphosts)) {
1475: print $fh "$key\n";
1476: }
1477: close($fh);
1478: if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) {
1479: my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
1480: system("$execpath $tmpfile");
1481: unlink('/tmp/lock_lciptables'); # Remove the lock file.
1482: }
1483: unlink($tmpfile);
1484: }
1485: }
1486:
1487: # ---------------------------------------------------------------- Start report
1488:
1489: $errors=0;
1490: $warnings=0;
1491: $notices=0;
1492:
1493:
1494: my $fh;
1495: if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1496: $fh=&start_logging();
1497:
1498: &log_machine_info($fh);
1499: &clean_tmp($fh);
1500: &clean_lonIDs($fh);
1501: &clean_balanceIDs($fh);
1502: &clean_webDAV_sessionIDs($fh);
1503: &check_httpd_logs($fh);
1504: &rotate_lonnet_logs($fh);
1505: &rotate_other_logs($fh);
1506: }
1507: if (!$justcheckconnections && !$justreload) {
1508: &checkon_daemon($fh,'lonmemcached',40000);
1509: &checkon_daemon($fh,'lonsql',200000);
1510: if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
1511: &checkon_daemon($fh,'lond',40000,'USR2');
1512: }
1513: &checkon_daemon($fh,'lonc',40000,'USR1');
1514: &checkon_daemon($fh,'lonmaxima',40000);
1515: &checkon_daemon($fh,'lonr',40000);
1516: }
1517: if ($justreload) {
1518: &clean_nosslverify($fh);
1519: &write_connection_config();
1520: &write_hosttypes();
1521: &update_revocation_list();
1522: &checkon_daemon($fh,'lond',40000,'USR2');
1523: &checkon_daemon($fh,'lonc',40000,'USR2');
1524: }
1525: if ($justcheckconnections) {
1526: &test_connections($fh);
1527: }
1528: if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1529: my $domconf = &get_domain_config();
1530: my ($threshold,$sysmail,$reportstatus,$weightsref,$exclusionsref) =
1531: &get_permcount_settings($domconf);
1532: &check_delayed_msg($fh,$weightsref,$exclusionsref);
1533: &write_loncaparevs();
1534: &write_serverhomeIDs();
1535: &write_checksums();
1536: my %sslrem = &clean_nosslverify($fh);
1537: my %conchgs = &write_connection_config();
1538: my %hosttypechgs = &write_hosttypes();
1539: my $hadcrlchg = &update_revocation_list();
1540: if ((keys(%conchgs) > 0) || (keys(%hosttypechgs) > 0) ||
1541: $hadcrlchg || (keys(%sslrem) > 0)) {
1542: &checkon_daemon($fh,'lond',40000,'USR2');
1543: &reset_nosslverify_pids($fh,%sslrem);
1544: }
1545: &finish_logging($fh,$weightsref);
1546: &log_simplestatus();
1547: if ($totalcount>$threshold && !$noemail) { &send_mail($sysmail,$reportstatus); }
1548: }
1549: }
1550:
1551: &main();
1552: 1;
1553:
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