1: #!/usr/bin/perl
2:
3: # Housekeeping program, started by cron, loncontrol and loncron.pl
4: #
5: # $Id: loncron,v 1.124 2020/05/09 19:17:33 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: use File::Copy;
49: use Sys::Hostname::FQDN();
50:
51: #globals
52: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
53:
54: my $statusdir="/home/httpd/html/lon-status";
55:
56:
57: # --------------------------------------------------------- Output error status
58:
59: sub log {
60: my $fh=shift;
61: if ($fh) { print $fh @_ }
62: }
63:
64: sub errout {
65: my $fh=shift;
66: &log($fh,(<<ENDERROUT));
67: <table border="2" bgcolor="#CCCCCC">
68: <tr><td>Notices</td><td>$notices</td></tr>
69: <tr><td>Warnings</td><td>$warnings</td></tr>
70: <tr><td>Errors</td><td>$errors</td></tr>
71: </table><p><a href="#top">Top</a></p>
72: ENDERROUT
73: }
74:
75: sub rotate_logfile {
76: my ($file,$fh,$description) = @_;
77: my $size=(stat($file))[7];
78: if ($size>40000) {
79: &log($fh,"<p>Rotating $description ...</p>");
80: rename("$file.2","$file.3");
81: rename("$file.1","$file.2");
82: rename("$file","$file.1");
83: }
84: }
85:
86: sub start_daemon {
87: my ($fh,$daemon,$pidfile,$args) = @_;
88: my $progname=$daemon;
89: if ($daemon eq 'lonc') {
90: $progname='loncnew';
91: }
92: my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
93: &rotate_logfile($error_fname,$fh,'error logs');
94: if ($daemon eq 'lonc') {
95: &clean_sockets($fh);
96: }
97: system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
98: sleep 1;
99: if (-e $pidfile) {
100: &log($fh,"<p>Seems like it started ...</p>");
101: my $lfh=IO::File->new("$pidfile");
102: my $daemonpid=<$lfh>;
103: chomp($daemonpid);
104: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
105: return 1;
106: } else {
107: return 0;
108: }
109: }
110: &log($fh,"<p>Seems like that did not work!</p>");
111: $errors++;
112: return 0;
113: }
114:
115: sub checkon_daemon {
116: my ($fh,$daemon,$maxsize,$send,$args)=@_;
117:
118: my $result;
119: &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
120: printf("%-15s ",$daemon);
121: if ($fh) {
122: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
123: if (open(DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
124: while (my $line=<DFH>) {
125: &log($fh,"$line");
126: if ($line=~/INFO/) { $notices++; }
127: if ($line=~/WARNING/) { $notices++; }
128: if ($line=~/CRITICAL/) { $warnings++; }
129: }
130: close (DFH);
131: }
132: }
133: &log($fh,"</tt></p>");
134: }
135:
136: my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
137:
138: my $restartflag=1;
139: my $daemonpid;
140: if (-e $pidfile) {
141: my $lfh=IO::File->new("$pidfile");
142: $daemonpid=<$lfh>;
143: chomp($daemonpid);
144: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
145: &log($fh,"<h3>$daemon at pid $daemonpid responding");
146: if ($send) { &log($fh,", sending $send"); }
147: &log($fh,"</h3>");
148: if ($send eq 'USR1') { kill USR1 => $daemonpid; }
149: if ($send eq 'USR2') { kill USR2 => $daemonpid; }
150: $restartflag=0;
151: if ($send eq 'USR2') {
152: $result = 'reloaded';
153: print "reloaded\n";
154: } else {
155: $result = 'running';
156: print "running\n";
157: }
158: } else {
159: $errors++;
160: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
161: $restartflag=1;
162: &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
163: }
164: }
165: if ($restartflag==1) {
166: $simplestatus{$daemon}='off';
167: $errors++;
168: my $kadaemon=$daemon;
169: if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
170: &log($fh,'<br /><font color="red">Killall '.$daemon.': '.
171: `killall $kadaemon 2>&1`.' - ');
172: sleep 1;
173: &log($fh,unlink($pidfile).' - '.
174: `killall -9 $kadaemon 2>&1`.
175: '</font><br />');
176: if ($kadaemon eq 'loncnew') {
177: &clean_lonc_childpids();
178: }
179: &log($fh,"<h3>$daemon not running, trying to start</h3>");
180:
181: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
182: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
183: $simplestatus{$daemon}='restarted';
184: $result = 'started';
185: print "started\n";
186: } else {
187: $errors++;
188: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
189: &log($fh,"<p>Give it one more try ...</p>");
190: print " ";
191: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
192: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
193: $simplestatus{$daemon}='restarted';
194: $result = 'started';
195: print "started\n";
196: } else {
197: $result = 'failed';
198: print " failed\n";
199: $simplestatus{$daemon}='failed';
200: $errors++; $errors++;
201: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
202: &log($fh,"<p>Unable to start $daemon</p>");
203: }
204: }
205: if ($fh) {
206: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
207: &log($fh,"<p><pre>");
208: if (open(DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
209: while (my $line=<DFH>) {
210: &log($fh,"$line");
211: if ($line=~/WARNING/) { $notices++; }
212: if ($line=~/CRITICAL/) { $notices++; }
213: }
214: close (DFH);
215: }
216: &log($fh,"</pre></p>");
217: }
218: }
219: }
220:
221: my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
222: &rotate_logfile($fname,$fh,'logs');
223:
224: &errout($fh);
225: return $result;
226: }
227:
228: # --------------------------------------------------------------------- Machine
229: sub log_machine_info {
230: my ($fh)=@_;
231: &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
232: &log($fh,"<h3>loadavg</h3>");
233:
234: open (LOADAVGH,"/proc/loadavg");
235: my $loadavg=<LOADAVGH>;
236: close (LOADAVGH);
237:
238: &log($fh,"<tt>$loadavg</tt>");
239:
240: my @parts=split(/\s+/,$loadavg);
241: if ($parts[1]>4.0) {
242: $errors++;
243: } elsif ($parts[1]>2.0) {
244: $warnings++;
245: } elsif ($parts[1]>1.0) {
246: $notices++;
247: }
248:
249: &log($fh,"<h3>df</h3>");
250: &log($fh,"<pre>");
251:
252: open (DFH,"df|");
253: while (my $line=<DFH>) {
254: &log($fh,&encode_entities($line,'<>&"'));
255: @parts=split(/\s+/,$line);
256: my $usage=$parts[4];
257: $usage=~s/\W//g;
258: if ($usage>90) {
259: $warnings++;
260: $notices++;
261: } elsif ($usage>80) {
262: $warnings++;
263: } elsif ($usage>60) {
264: $notices++;
265: }
266: if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
267: }
268: close (DFH);
269: &log($fh,"</pre>");
270:
271:
272: &log($fh,"<h3>ps</h3>");
273: &log($fh,"<pre>");
274: my $psproc=0;
275:
276: open (PSH,"ps aux --cols 140 |");
277: while (my $line=<PSH>) {
278: &log($fh,&encode_entities($line,'<>&"'));
279: $psproc++;
280: }
281: close (PSH);
282: &log($fh,"</pre>");
283:
284: if ($psproc>200) { $notices++; }
285: if ($psproc>250) { $notices++; }
286:
287: &log($fh,"<h3>distprobe</h3>");
288: &log($fh,"<pre>");
289: &log($fh,&encode_entities(&LONCAPA::distro(),'<>&"'));
290: &log($fh,"</pre>");
291:
292: &errout($fh);
293: }
294:
295: sub start_logging {
296: my $fh=IO::File->new(">$statusdir/newstatus.html");
297: my %simplestatus=();
298: my $now=time;
299: my $date=localtime($now);
300:
301:
302: &log($fh,(<<ENDHEADERS));
303: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
304: <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
305: <head>
306: <title>LON Status Report $perlvar{'lonHostID'}</title>
307: <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
308: </head>
309: <body bgcolor="#AAAAAA">
310: <a name="top" />
311: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
312: <h2>$date ($now)</h2>
313: <ol>
314: <li><a href="#configuration">Configuration</a></li>
315: <li><a href="#machine">Machine Information</a></li>
316: <li><a href="#tmp">Temporary Files</a></li>
317: <li><a href="#tokens">Session Tokens</a></li>
318: <li><a href="#webdav">WebDAV Session Tokens</a></li>
319: <li><a href="#httpd">httpd</a></li>
320: <li><a href="#lonsql">lonsql</a></li>
321: <li><a href="#lond">lond</a></li>
322: <li><a href="#lonc">lonc</a></li>
323: <li><a href="#lonnet">lonnet</a></li>
324: <li><a href="#connections">Connections</a></li>
325: <li><a href="#delayed">Delayed Messages</a></li>
326: <li><a href="#errcount">Error Count</a></li>
327: </ol>
328: <hr />
329: <a name="configuration" />
330: <h2>Configuration</h2>
331: <h3>PerlVars</h3>
332: <table border="2">
333: ENDHEADERS
334:
335: foreach my $varname (sort(keys(%perlvar))) {
336: &log($fh,"<tr><td>$varname</td><td>".
337: &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
338: }
339: &log($fh,"</table><h3>Hosts</h3><table border='2'>");
340: my %hostname = &Apache::lonnet::all_hostnames();
341: foreach my $id (sort(keys(%hostname))) {
342: my $role = (&Apache::lonnet::is_library($id) ? 'library'
343: : 'access');
344: &log($fh,
345: "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
346: "</td><td>".$role.
347: "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
348: }
349: &log($fh,"</table><h3>Spare Hosts</h3>");
350: if (keys(%Apache::lonnet::spareid) > 0) {
351: &log($fh,"<ul>");
352: foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
353: &log($fh,"<li>$type\n<ol>");
354: foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
355: &log($fh,"<li>$id</li>\n");
356: }
357: &log($fh,"</ol>\n</li>\n");
358: }
359: &log($fh,"</ul>\n");
360: } else {
361: &log($fh,"No spare hosts specified<br />\n");
362: }
363: return $fh;
364: }
365:
366: # --------------------------------------------------------------- clean out tmp
367: sub clean_tmp {
368: my ($fh)=@_;
369: &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
370: my ($cleaned,$old,$removed) = (0,0,0);
371: my %errors = (
372: dir => [],
373: file => [],
374: failopen => [],
375: );
376: my %error_titles = (
377: dir => 'failed to remove empty directory:',
378: file => 'failed to unlike stale file',
379: failopen => 'failed to open file or directory'
380: );
381: ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
382: &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
383: foreach my $key (sort(keys(%errors))) {
384: if (ref($errors{$key}) eq 'ARRAY') {
385: if (@{$errors{$key}} > 0) {
386: &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
387: join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
388: }
389: }
390: }
391: }
392:
393: sub recursive_clean_tmp {
394: my ($subdir,$cleaned,$old,$removed,$errors) = @_;
395: my $base = "$perlvar{'lonDaemons'}/tmp";
396: my $path = $base;
397: next if ($subdir =~ m{\.\./});
398: next unless (ref($errors) eq 'HASH');
399: unless ($subdir eq '') {
400: $path .= '/'.$subdir;
401: }
402: if (opendir(my $dh,"$path")) {
403: while (my $file = readdir($dh)) {
404: next if ($file =~ /^\.\.?$/);
405: my $fname = "$path/$file";
406: if (-d $fname) {
407: my $innerdir;
408: if ($subdir eq '') {
409: $innerdir = $file;
410: } else {
411: $innerdir = $subdir.'/'.$file;
412: }
413: ($cleaned,$old,$removed) =
414: &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
415: my @doms = &Apache::lonnet::current_machine_domains();
416:
417: if (open(my $dirhandle,$fname)) {
418: unless (($innerdir eq 'helprequests') ||
419: (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
420: my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
421: join('&&',@contents)."\n";
422: if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
423: closedir($dirhandle);
424: if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
425: if (rmdir($fname)) {
426: $removed ++;
427: } elsif (ref($errors->{dir}) eq 'ARRAY') {
428: push(@{$errors->{dir}},$fname);
429: }
430: }
431: }
432: } else {
433: closedir($dirhandle);
434: }
435: }
436: } else {
437: my ($dev,$ino,$mode,$nlink,
438: $uid,$gid,$rdev,$size,
439: $atime,$mtime,$ctime,
440: $blksize,$blocks)=stat($fname);
441: my $now=time;
442: my $since=$now-$mtime;
443: if ($since>$perlvar{'lonExpire'}) {
444: if ($subdir eq '') {
445: my $line='';
446: if ($fname =~ /\.db$/) {
447: if (unlink($fname)) {
448: $cleaned++;
449: } elsif (ref($errors->{file}) eq 'ARRAY') {
450: push(@{$errors->{file}},$fname);
451: }
452: } elsif (open(PROBE,$fname)) {
453: my $line='';
454: $line=<PROBE>;
455: close(PROBE);
456: if ($line=~/^CHECKOUTTOKEN\&/) {
457: if ($since>365*$perlvar{'lonExpire'}) {
458: if (unlink($fname)) {
459: $cleaned++;
460: } elsif (ref($errors->{file}) eq 'ARRAY') {
461: push(@{$errors->{file}},$fname);
462: }
463: } else {
464: $old++;
465: }
466: } else {
467: if (unlink($fname)) {
468: $cleaned++;
469: } elsif (ref($errors->{file}) eq 'ARRAY') {
470: push(@{$errors->{file}},$fname);
471: }
472: }
473: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
474: push(@{$errors->{failopen}},$fname);
475: }
476: } else {
477: if (unlink($fname)) {
478: $cleaned++;
479: } elsif (ref($errors->{file}) eq 'ARRAY') {
480: push(@{$errors->{file}},$fname);
481: }
482: }
483: }
484: }
485: }
486: closedir($dh);
487: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
488: push(@{$errors->{failopen}},$path);
489: }
490: return ($cleaned,$old,$removed);
491: }
492:
493: # ------------------------------------------------------------ clean out lonIDs
494: sub clean_lonIDs {
495: my ($fh)=@_;
496: &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
497: my $cleaned=0;
498: my $active=0;
499: while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
500: my $now=time;
501: if (-l $fname) {
502: my $linkfname = readlink($fname);
503: if (-f $linkfname) {
504: if ($linkfname =~ m{^$perlvar{'lonIDsDir'}/[^/]+\.id$}) {
505: my @data = stat($linkfname);
506: my $mtime = $data[9];
507: my $since=$now-$mtime;
508: if ($since>$perlvar{'lonExpire'}) {
509: if (unlink($linkfname)) {
510: $cleaned++;
511: &log($fh,"Unlinking $linkfname<br />");
512: unlink($fname);
513: }
514: }
515: }
516: } else {
517: unlink($fname);
518: }
519: } elsif (-f $fname) {
520: my @data = stat($fname);
521: my $mtime = $data[9];
522: my $since=$now-$mtime;
523: if ($since>$perlvar{'lonExpire'}) {
524: if (unlink($fname)) {
525: $cleaned++;
526: &log($fh,"Unlinking $fname<br />");
527: }
528: } else {
529: $active++;
530: }
531: }
532: }
533: &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
534: &log($fh,"<h3>$active open session(s)</h3>");
535: }
536:
537: # -------------------------------------------------------- clean out balanceIDs
538:
539: sub clean_balanceIDs {
540: my ($fh)=@_;
541: &log($fh,'<hr /><a name="balcookies" /><h2>Session Tokens</h2>');
542: my $cleaned=0;
543: my $active=0;
544: if (-d $perlvar{'lonBalanceDir'}) {
545: while (my $fname=<$perlvar{'lonBalanceDir'}/*.id>) {
546: my ($dev,$ino,$mode,$nlink,
547: $uid,$gid,$rdev,$size,
548: $atime,$mtime,$ctime,
549: $blksize,$blocks)=stat($fname);
550: my $now=time;
551: my $since=$now-$mtime;
552: if ($since>$perlvar{'lonExpire'}) {
553: $cleaned++;
554: &log($fh,"Unlinking $fname<br />");
555: unlink("$fname");
556: } else {
557: $active++;
558: }
559: }
560: }
561: &log($fh,"<p>Cleaned up ".$cleaned." stale balancer files</p>");
562: &log($fh,"<h3>$active unexpired balancer files</h3>");
563: }
564:
565: # ------------------------------------------------ clean out webDAV Session IDs
566: sub clean_webDAV_sessionIDs {
567: my ($fh)=@_;
568: if ($perlvar{'lonRole'} eq 'library') {
569: &log($fh,'<hr /><a name="webdav" /><h2>WebDAV Session Tokens</h2>');
570: my $cleaned=0;
571: my $active=0;
572: my $now = time;
573: if (-d $perlvar{'lonDAVsessDir'}) {
574: while (my $fname=<$perlvar{'lonDAVsessDir'}/*>) {
575: my @stats = stat($fname);
576: my $since=$now-$stats[9];
577: if ($since>$perlvar{'lonExpire'}) {
578: $cleaned++;
579: &log($fh,"Unlinking $fname<br />");
580: unlink("$fname");
581: } else {
582: $active++;
583: }
584: }
585: &log($fh,"<p>Cleaned up ".$cleaned." stale webDAV session token(s).</p>");
586: &log($fh,"<h3>$active open webDAV session(s)</h3>");
587: }
588: }
589: }
590:
591: # ------------------------------------------------------------ clean out ltiIDs
592:
593: sub clean_ltiIDs {
594: my ($fh)=@_;
595: &log($fh,'<hr /><a name="ltisessions" /><h2>LTI Session Pointers</h2>');
596: my $cleaned=0;
597: my $active=0;
598: if (-d $perlvar{'ltiIDsDir'}) {
599: while (my $fname=<$perlvar{'ltiIDsDir'}/*>) {
600: my ($dev,$ino,$mode,$nlink,
601: $uid,$gid,$rdev,$size,
602: $atime,$mtime,$ctime,
603: $blksize,$blocks)=stat($fname);
604: my $now=time;
605: my $since=$now-$mtime;
606: if ($since>$perlvar{'lonExpire'}) {
607: $cleaned++;
608: &log($fh,"Unlinking $fname<br />");
609: unlink("$fname");
610: } else {
611: $active++;
612: }
613: }
614: }
615: &log($fh,"<p>Cleaned up ".$cleaned." old LTI session pointers.</p>");
616: &log($fh,"<h3>$active unexpired LTI session pointers</h3>");
617: }
618:
619: # ----------------------------------------------------------- clean out sockets
620: sub clean_sockets {
621: my ($fh)=@_;
622: my $cleaned=0;
623: opendir(SOCKETS,$perlvar{'lonSockDir'});
624: while (my $fname=readdir(SOCKETS)) {
625: next if (-d $fname
626: || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
627: $cleaned++;
628: &log($fh,"Unlinking $fname<br />");
629: unlink("/home/httpd/sockets/$fname");
630: }
631: &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
632: }
633:
634:
635: # ----------------------------------------------------------------------- httpd
636: sub check_httpd_logs {
637: my ($fh)=@_;
638: if (open(PIPE,"./lchttpdlogs|")) {
639: while (my $line=<PIPE>) {
640: &log($fh,$line);
641: if ($line=~/\[error\]/) { $notices++; }
642: }
643: close(PIPE);
644: }
645: &errout($fh);
646: }
647:
648: # ---------------------------------------------------------------------- lonnet
649:
650: sub rotate_lonnet_logs {
651: my ($fh)=@_;
652: &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
653: print "Checking logs.\n";
654: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
655: open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
656: while (my $line=<DFH>) {
657: &log($fh,&encode_entities($line,'<>&"'));
658: }
659: close (DFH);
660: }
661: &log($fh,"</pre><h3>Perm Log</h3><pre>");
662:
663: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
664: open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
665: while (my $line=<DFH>) {
666: &log($fh,&encode_entities($line,'<>&"'));
667: }
668: close (DFH);
669: } else { &log($fh,"No perm log\n") }
670:
671: my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
672: &rotate_logfile($fname,$fh,'lonnet log');
673:
674: &log($fh,"</pre>");
675: &errout($fh);
676: }
677:
678: sub rotate_other_logs {
679: my ($fh) = @_;
680: my %logs = (
681: autoenroll => 'Auto Enroll log',
682: autocreate => 'Create Course log',
683: searchcat => 'Search Cataloguing log',
684: autoupdate => 'Auto Update log',
685: refreshcourseids_db => 'Refresh CourseIDs db log',
686: );
687: foreach my $item (keys(%logs)) {
688: my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
689: &rotate_logfile($fname,$fh,$logs{$item});
690: }
691: }
692:
693: # ----------------------------------------------------------------- Connections
694: sub test_connections {
695: my ($fh)=@_;
696: &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
697: print "Testing connections.\n";
698: &log($fh,"<table border='2'>");
699: my ($good,$bad)=(0,0);
700: my %hostname = &Apache::lonnet::all_hostnames();
701: foreach my $tryserver (sort(keys(%hostname))) {
702: print(".");
703: my $result;
704: my $answer=&Apache::lonnet::reply("ping",$tryserver);
705: if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
706: $result="<b>ok</b>";
707: $good++;
708: } else {
709: $result=$answer;
710: $warnings++;
711: if ($answer eq 'con_lost') {
712: $bad++;
713: $warnings++;
714: } else {
715: $good++; #self connection
716: }
717: }
718: if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
719: &log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
720: }
721: &log($fh,"</table>");
722: print "\n$good good, $bad bad connections\n";
723: &errout($fh);
724: }
725:
726:
727: # ------------------------------------------------------------ Delayed messages
728: sub check_delayed_msg {
729: my ($fh,$weightsref,$exclusionsref)=@_;
730: &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
731: print "Checking buffers.\n";
732:
733: &log($fh,'<h3>Scanning Permanent Log</h3>');
734:
735: my $unsend=0;
736: my $ignored=0;
737:
738: my %hostname = &Apache::lonnet::all_hostnames();
739: my $numhosts = scalar(keys(%hostname));
740: my $checkbackwards = 0;
741: my $checkfrom = 0;
742: my $checkexcluded = 0;
743: my (%bymachine,%weights,%exclusions,%serverhomes);
744: if (ref($weightsref) eq 'HASH') {
745: %weights = %{$weightsref};
746: }
747: if (ref($exclusionsref) eq 'HASH') {
748: %exclusions = %{$exclusionsref};
749: if (keys(%exclusions)) {
750: $checkexcluded = 1;
751: %serverhomes = &read_serverhomeIDs();
752: }
753: }
754:
755: #
756: # For LON-CAPA 1.2.0 to 2.1.3 (release dates: 8/31/2004 and 3/31/2006) any
757: # entry logged in lonnet.perm.log for completion of a delayed (critical)
758: # transaction lacked the hostID for the remote node to which the command
759: # to be completed was sent.
760: #
761: # Because of this, exclusion of items in lonnet.perm.log for nodes which are
762: # no longer part of the cluster from adding to the overall "unsend" count
763: # needs additional effort besides the changes made in loncron rev. 1.105.
764: #
765: # For "S" (completion) events logging in LON-CAPA 1.2.0 through 2.1.3 included
766: # "LondTransaction=HASH(hexadecimal)->getClient() :$cmd, where the hexadecimal
767: # is a memory location, and $cmd is the command sent to the remote node.
768: #
769: # Starting with 2.2.0 (released 8/21/2006) logging for "S" (completion) events
770: # had sethost:$host_id:$cmd after LondTransaction=HASH(hexadecimal)->getClient()
771: #
772: # Starting with 2.4.1 (released 6/13/2007) logging for "S" replaced echoing the
773: # getClient() call with the result of the Transaction->getClient() call itself
774: # undef for completion of delivery of a delayed message.
775: #
776: # The net effect of these changes is that lonnet.perm.log is now accessed three
777: # times: (a) oldest record is checked, if earlier than release date for 2.5.0
778: # then (b) file is read backwards, with timestamp recorded for most recent
779: # instance of logged "S" event for "update" command without "sethost:$host_id:"
780: # then (c) file is read forward with records ignored which predate the timestamp
781: # recorded in (b), if one was found.
782: #
783: # In (c), when calculating the unsend total, i.e., the difference between delayed
784: # transactions ("D") and sent transactions ("S"), transactions are ignored if the
785: # target node is no longer in the cluster, and also (for "update" commands), if
786: # the target node is in the list of nodes excluded from the count, in the domain
787: # configuration for this machine's default domain. The idea here is to remove
788: # delayed "update" commands for nodes for which inbound access to port 5663,
789: # is blocked, but are still part of the LON-CAPA network, (i.e., they can still
790: # replicate content from other nodes).
791: #
792:
793: my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
794: if (defined($dfh)) {
795: while (my $line=<$dfh>) {
796: my ($time,$sdf,$rest)=split(/:/,$line,3);
797: if ($time < 1541185772) {
798: $checkbackwards = 1;
799: }
800: last;
801: }
802: undef $dfh;
803: }
804:
805: if ($checkbackwards) {
806: if (tie *BW, 'File::ReadBackwards', "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
807: while(my $line=<BW>) {
808: if ($line =~ /\QLondTransaction=HASH\E[^:]+:update:/) {
809: ($checkfrom) = split(/:/,$line,2);
810: last;
811: }
812: }
813: close(BW);
814: }
815: }
816: $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
817: if (defined($dfh)) {
818: while (my $line=<$dfh>) {
819: my ($time,$sdf,$rest)=split(/:/,$line,3);
820: next unless (($sdf eq 'F') || ($sdf eq 'S') || ($sdf eq 'D'));
821: next if (($checkfrom) && ($time <= $checkfrom));
822: my ($dserv,$dcmd);
823: if ($sdf eq 'S') {
824: my ($serva,$cmda,$servb,$cmdb) = split(/:/,$rest);
825: if ($cmda eq 'sethost') {
826: chomp($cmdb);
827: $dcmd = $cmdb;
828: } else {
829: $dcmd = $cmda;
830: }
831: if (($serva =~ /^LondTransaction/) || ($serva eq '')) {
832: unless (($servb eq '') || ($servb =~ m{^/})) {
833: $dserv = $servb;
834: }
835: } else {
836: $dserv = $serva;
837: }
838: } else {
839: ($dserv,$dcmd) = split(/:/,$rest);
840: }
841: if ($sdf eq 'F') {
842: my $local=localtime($time);
843: &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br />");
844: $warnings++;
845: }
846: next if ((($dserv eq '') || ($dcmd eq '')) && ($sdf ne 'F'));
847: if ($sdf eq 'S') {
848: if ($dcmd eq 'update') {
849: if ($hostname{$dserv}) {
850: if ($exclusions{$serverhomes{$hostname{$dserv}}}) {
851: $ignored --;
852: } else {
853: $unsend --;
854: }
855: }
856: if (exists($bymachine{$dserv})) {
857: $bymachine{$dserv} --;
858: } else {
859: $bymachine{$dserv} = -1;
860: }
861: } else {
862: if ($hostname{$dserv}) {
863: $unsend --;
864: }
865: }
866: } elsif ($sdf eq 'D') {
867: if ($dcmd eq 'update') {
868: if ($hostname{$dserv}) {
869: if ($exclusions{$serverhomes{$hostname{$dserv}}}) {
870: $ignored ++;
871: } else {
872: $unsend ++;
873: }
874: }
875: if (exists($bymachine{$dserv})) {
876: $bymachine{$dserv} ++;
877: } else {
878: $bymachine{$dserv} = 1;
879: }
880: } else {
881: if ($hostname{$dserv}) {
882: $unsend ++;
883: }
884: }
885: }
886: }
887: undef $dfh;
888: my $nodest = 0;
889: my $retired = 0;
890: my %active;
891: if (keys(%bymachine)) {
892: unless ($checkexcluded) {
893: %serverhomes = &read_serverhomeIDs();
894: }
895: foreach my $key (keys(%bymachine)) {
896: if ($bymachine{$key} > 0) {
897: if ($hostname{$key}) {
898: $active{$serverhomes{$hostname{$key}}} += $bymachine{$key};
899: } else {
900: $retired ++;
901: $nodest += $bymachine{$key};
902: }
903: }
904: }
905: }
906: if (keys(%active)) {
907: &log($fh,"<p>Unsend messages by node, active (undegraded) nodes in cluster</p>\n");
908: foreach my $key (sort(keys(%active))) {
909: &log($fh,&encode_entities("$key => $active{$key}",'<>&"')."\n");
910: }
911: }
912: &log($fh,"<p>Total unsend messages: <b>$unsend</b> for ".scalar(keys(%active))." active (undegraded) nodes in cluster.</p>\n");
913: if (keys(%exclusions) > 0) {
914: &log($fh,"<p>Total incomplete updates <b>$ignored</b> for ".scalar(keys(%exclusions))." degraded nodes in cluster.</p>\n");
915: }
916: if ($retired) {
917: &log($fh,"<p>Total unsent <b>$nodest</b> for $retired nodes no longer in cluster.</p>\n");
918: }
919: if ($unsend > 0) {
920: $warnings=$warnings+$weights{'U'}*$unsend;
921: }
922: }
923:
924: if ($unsend) { $simplestatus{'unsend'}=$unsend; }
925: &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
926: # list directory with delayed messages and remember offline servers
927: my %servers=();
928: open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
929: while (my $line=<DFH>) {
930: my ($server)=($line=~/\.(\w+)$/);
931: if ($server) { $servers{$server}=1; }
932: &log($fh,&encode_entities($line,'<>&"'));
933: }
934: &log($fh,"</pre>\n");
935: close (DFH);
936: # pong to all servers that have delayed messages
937: # this will trigger a reverse connection, which should flush the buffers
938: foreach my $tryserver (sort(keys(%servers))) {
939: if ($hostname{$tryserver} || !$numhosts) {
940: my $answer;
941: eval {
942: local $SIG{ ALRM } = sub { die "TIMEOUT" };
943: alarm(20);
944: $answer = &Apache::lonnet::reply("pong",$tryserver);
945: alarm(0);
946: };
947: if ($@ && $@ =~ m/TIMEOUT/) {
948: &log($fh,"Attempted pong to $tryserver timed out<br />");
949: print "Time out while contacting: $tryserver for pong.\n";
950: } else {
951: &log($fh,"Pong to $tryserver: $answer<br />");
952: }
953: } else {
954: &log($fh,"$tryserver has delayed messages, but is not part of the cluster -- skipping 'Pong'.<br />");
955: }
956: }
957: }
958:
959: sub finish_logging {
960: my ($fh,$weightsref)=@_;
961: my %weights;
962: if (ref($weightsref) eq 'HASH') {
963: %weights = %{$weightsref};
964: }
965: &log($fh,"<a name='errcount' />\n");
966: $totalcount=($weights{'N'}*$notices)+($weights{'W'}*$warnings)+($weights{'E'}*$errors);
967: &errout($fh);
968: &log($fh,"<h1>Total Error Count: $totalcount</h1>");
969: my $now=time;
970: my $date=localtime($now);
971: &log($fh,"<hr />$date ($now)</body></html>\n");
972: print "lon-status webpage updated.\n";
973: $fh->close();
974:
975: if ($errors) { $simplestatus{'errors'}=$errors; }
976: if ($warnings) { $simplestatus{'warnings'}=$warnings; }
977: if ($notices) { $simplestatus{'notices'}=$notices; }
978: $simplestatus{'time'}=time;
979: }
980:
981: sub log_simplestatus {
982: rename("$statusdir/newstatus.html","$statusdir/index.html");
983:
984: my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
985: foreach (keys %simplestatus) {
986: print $sfh $_.'='.$simplestatus{$_}.'&';
987: }
988: print $sfh "\n";
989: $sfh->close();
990: }
991:
992: sub write_loncaparevs {
993: print "Retrieving LON-CAPA version information.\n";
994: my %hostname = &Apache::lonnet::all_hostnames();
995: my $output;
996: foreach my $id (sort(keys(%hostname))) {
997: if ($id ne '') {
998: my $loncaparev;
999: eval {
1000: local $SIG{ ALRM } = sub { die "TIMEOUT" };
1001: alarm(10);
1002: $loncaparev =
1003: &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
1004: alarm(0);
1005: };
1006: if ($@ && $@ =~ m/TIMEOUT/) {
1007: print "Time out while contacting lonHost: $id for version.\n";
1008: }
1009: if ($loncaparev =~ /^[\w.\-]+$/) {
1010: $output .= $id.':'.$loncaparev."\n";
1011: }
1012: }
1013: }
1014: if ($output) {
1015: if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
1016: print $fh $output;
1017: close($fh);
1018: &Apache::lonnet::load_loncaparevs();
1019: }
1020: }
1021: return;
1022: }
1023:
1024: sub write_serverhomeIDs {
1025: print "Retrieving LON-CAPA lonHostID information.\n";
1026: my %name_to_host = &Apache::lonnet::all_names();
1027: my $output;
1028: foreach my $name (sort(keys(%name_to_host))) {
1029: if ($name ne '') {
1030: if (ref($name_to_host{$name}) eq 'ARRAY') {
1031: my $serverhomeID;
1032: eval {
1033: local $SIG{ ALRM } = sub { die "TIMEOUT" };
1034: alarm(10);
1035: $serverhomeID =
1036: &Apache::lonnet::get_server_homeID($name,1,'loncron');
1037: alarm(0);
1038: };
1039: if ($@ && $@ =~ m/TIMEOUT/) {
1040: print "Time out while contacting server: $name\n";
1041: }
1042: if ($serverhomeID ne '') {
1043: $output .= $name.':'.$serverhomeID."\n";
1044: } else {
1045: $output .= $name.':'.$name_to_host{$name}->[0]."\n";
1046: }
1047: }
1048: }
1049: }
1050: if ($output) {
1051: if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
1052: print $fh $output;
1053: close($fh);
1054: &Apache::lonnet::load_serverhomeIDs();
1055: }
1056: }
1057: return;
1058: }
1059:
1060: sub write_checksums {
1061: my $distro = &LONCAPA::distro();
1062: if ($distro) {
1063: print "Retrieving file version and checksumming.\n";
1064: my $numchksums = 0;
1065: my ($chksumsref,$versionsref) =
1066: &LONCAPA::Checksumming::get_checksums($distro,$perlvar{'lonDaemons'},
1067: $perlvar{'lonLib'},
1068: $perlvar{'lonIncludes'},
1069: $perlvar{'lonTabDir'});
1070: if (ref($chksumsref) eq 'HASH') {
1071: $numchksums = scalar(keys(%{$chksumsref}));
1072: }
1073: print "File version retrieved and checksumming completed for $numchksums files.\n";
1074: } else {
1075: print "File version retrieval and checksumming skipped - could not determine Linux distro.\n";
1076: }
1077: return;
1078: }
1079:
1080: sub write_hostips {
1081: my $lontabdir = $perlvar{'lonTabDir'};
1082: my $defdom = $perlvar{'lonDefDomain'};
1083: my $lonhost = $perlvar{'lonHostID'};
1084: my $newfile = "$lontabdir/currhostips.tab";
1085: my $oldfile = "$lontabdir/prevhostips.tab";
1086: my (%prevhosts,%currhosts,%ipchange);
1087: if ((-e $newfile) && (-s $newfile)) {
1088: move($newfile,$oldfile);
1089: chmod(0644,$oldfile);
1090: if (open(my $fh,'<',$oldfile)) {
1091: while (my $line=<$fh>) {
1092: chomp($line);
1093: if ($line =~ /^([^:]+):([\d.]+)$/) {
1094: $prevhosts{$1} = $2;
1095: }
1096: }
1097: close($fh);
1098: }
1099: }
1100: my ($ip_info,$cached) =
1101: &Apache::lonnet::is_cached_new('iphost','iphost');
1102: if (!$cached) {
1103: &Apache::lonnet::get_iphost();
1104: ($ip_info,$cached) =
1105: &Apache::lonnet::is_cached_new('iphost','iphost');
1106: }
1107: if (ref($ip_info) eq 'ARRAY') {
1108: %currhosts = %{$ip_info->[1]};
1109: if (open(my $fh,'>',$newfile)) {
1110: foreach my $key (keys(%currhosts)) {
1111: print $fh "$key:$currhosts{$key}\n";
1112: }
1113: close($fh);
1114: chmod(0644,$newfile);
1115: }
1116: }
1117: if (keys(%prevhosts) && keys(%currhosts)) {
1118: foreach my $key (keys(%prevhosts)) {
1119: unless ($currhosts{$key} eq $prevhosts{$key}) {
1120: $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key};
1121: }
1122: }
1123: foreach my $key (keys(%currhosts)) {
1124: unless ($currhosts{$key} eq $prevhosts{$key}) {
1125: $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key};
1126: }
1127: }
1128: }
1129: if (&Apache::lonnet::domain($defdom,'primary') eq $lonhost) {
1130: if (keys(%ipchange)) {
1131: if (open(my $fh,'>>',$perlvar{'lonDaemons'}.'/logs/hostip.log')) {
1132: print $fh "********************\n".localtime(time).' Changes --'."\n".
1133: "| Hostname | Previous IP | New IP |\n".
1134: " --------------------------------- \n";
1135: foreach my $hostname (sort(keys(%ipchange))) {
1136: print $fh "| $hostname | $ipchange{$hostname} |\n";
1137: }
1138: print $fh "\n*******************\n\n";
1139: close($fh);
1140: }
1141: my $emailto = &Apache::loncommon::build_recipient_list(undef,
1142: 'hostipmail',$defdom);
1143: if ($emailto) {
1144: my $subject = "LON-CAPA Hostname to IP change ($perlvar{'lonHostID'})";
1145: my $chgmail = "To: $emailto\n".
1146: "Subject: $subject\n".
1147: "Content-type: text/plain\; charset=UTF-8\n".
1148: "MIME-Version: 1.0\n\n".
1149: "Host/IP changes\n".
1150: " \n".
1151: "| Hostname | Previous IP | New IP |\n".
1152: " --------------------------------- \n";
1153: foreach my $hostname (sort(keys(%ipchange))) {
1154: $chgmail .= "| $hostname | $ipchange{$hostname} |\n";
1155: }
1156: $chgmail .= "\n\n";
1157: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
1158: print $mailh $chgmail;
1159: close($mailh);
1160: print "Sending mail notification of hostname/IP changes.\n";
1161: }
1162: }
1163: }
1164: }
1165: return;
1166: }
1167:
1168: sub clean_nosslverify {
1169: my ($fh) = @_;
1170: my %unlinked;
1171: if (-d "$perlvar{'lonSockDir'}/nosslverify") {
1172: if (opendir(my $dh,"$perlvar{'lonSockDir'}/nosslverify")) {
1173: while (my $fname=readdir($dh)) {
1174: next if ($fname =~ /^\.+$/);
1175: if (unlink("/home/httpd/sockets/nosslverify/$fname")) {
1176: &log($fh,"Unlinking $fname<br />");
1177: $unlinked{$fname} = 1;
1178: }
1179: }
1180: closedir($dh);
1181: }
1182: }
1183: &log($fh,"<p>Removed ".scalar(keys(%unlinked))." nosslverify clients</p>");
1184: return %unlinked;
1185: }
1186: sub clean_lonc_childpids {
1187: my $childpiddir = "$perlvar{'lonDocRoot'}/lon-status/loncchld";
1188: if (-d $childpiddir) {
1189: if (opendir(my $dh,$childpiddir)) {
1190: while (my $fname=readdir($dh)) {
1191: next if ($fname =~ /^\.+$/);
1192: unlink("$childpiddir/$fname");
1193: }
1194: closedir($dh);
1195: }
1196: }
1197: }
1198:
1199: sub write_connection_config {
1200: my ($domconf,%connectssl,%changes);
1201: $domconf = &get_domain_config();
1202: if (ref($domconf) eq 'HASH') {
1203: if (ref($domconf->{'ssl'}) eq 'HASH') {
1204: foreach my $connect ('connto','connfrom') {
1205: if (ref($domconf->{'ssl'}->{$connect}) eq 'HASH') {
1206: my ($sslreq,$sslnoreq,$currsetting);
1207: my %contypes;
1208: foreach my $type ('dom','intdom','other') {
1209: $connectssl{$connect.'_'.$type} = $domconf->{'ssl'}->{$connect}->{$type};
1210: }
1211: }
1212: }
1213: }
1214: if (keys(%connectssl)) {
1215: my %currconf;
1216: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/connectionrules.tab")) {
1217: while (my $line = <$fh>) {
1218: chomp($line);
1219: my ($name,$value) = split(/=/,$line);
1220: if ($value =~ /^(?:no|yes|req)$/) {
1221: if ($name =~ /^conn(to|from)_(dom|intdom|other)$/) {
1222: $currconf{$name} = $value;
1223: }
1224: }
1225: }
1226: close($fh);
1227: }
1228: if (open(my $fh,'>',"$perlvar{'lonTabDir'}/connectionrules.tab")) {
1229: my $count = 0;
1230: foreach my $key (sort(keys(%connectssl))) {
1231: print $fh "$key=$connectssl{$key}\n";
1232: if (exists($currconf{$key})) {
1233: unless ($currconf{$key} eq $connectssl{$key}) {
1234: $changes{$key} = 1;
1235: }
1236: } else {
1237: $changes{$key} = 1;
1238: }
1239: $count ++;
1240: }
1241: close($fh);
1242: print "Completed writing SSL options for lonc/lond for $count items.\n";
1243: }
1244: } else {
1245: print "Writing of SSL options skipped - no connection rules in domain configuration.\n";
1246: }
1247: } else {
1248: print "Retrieval of SSL options for lonc/lond skipped - no configuration data available for domain.\n";
1249: }
1250: return %changes;
1251: }
1252:
1253: sub get_domain_config {
1254: my ($dom,$primlibserv,$isprimary,$url,%confhash);
1255: $dom = $perlvar{'lonDefDomain'};
1256: $primlibserv = &Apache::lonnet::domain($dom,'primary');
1257: if ($primlibserv eq $perlvar{'lonHostID'}) {
1258: $isprimary = 1;
1259: } elsif ($primlibserv ne '') {
1260: my $protocol = $Apache::lonnet::protocol{$primlibserv};
1261: my $hostname = &Apache::lonnet::hostname($primlibserv);
1262: unless ($protocol eq 'https') {
1263: $protocol = 'http';
1264: }
1265: $url = $protocol.'://'.$hostname.'/cgi-bin/listdomconfig.pl?primary='.$primlibserv.'&format=raw';
1266: }
1267: if ($isprimary) {
1268: my $lonusersdir = $perlvar{'lonUsersDir'};
1269: my $fname = $lonusersdir.'/'.$dom.'/configuration.db';
1270: if (-e $fname) {
1271: my $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER());
1272: if (ref($dbref) eq 'HASH') {
1273: foreach my $key (sort(keys(%{$dbref}))) {
1274: my $value = $dbref->{$key};
1275: if ($value =~ s/^__FROZEN__//) {
1276: $value = thaw(&LONCAPA::unescape($value));
1277: } else {
1278: $value = &LONCAPA::unescape($value);
1279: }
1280: $confhash{$key} = $value;
1281: }
1282: &LONCAPA::locking_hash_untie($dbref);
1283: }
1284: }
1285: } else {
1286: my $request=new HTTP::Request('GET',$url);
1287: my $response=&LONCAPA::LWPReq::makerequest($primlibserv,$request,'',\%perlvar,5);
1288: unless ($response->is_error()) {
1289: my $content = $response->content;
1290: if ($content) {
1291: my @pairs=split(/\&/,$content);
1292: foreach my $item (@pairs) {
1293: my ($key,$value)=split(/=/,$item,2);
1294: my $what = &LONCAPA::unescape($key);
1295: if ($value =~ s/^__FROZEN__//) {
1296: $value = thaw(&LONCAPA::unescape($value));
1297: } else {
1298: $value = &LONCAPA::unescape($value);
1299: }
1300: $confhash{$what}=$value;
1301: }
1302: }
1303: }
1304: }
1305: return \%confhash;
1306: }
1307:
1308: sub write_hosttypes {
1309: my %intdom = &Apache::lonnet::all_host_intdom();
1310: my %hostdom = &Apache::lonnet::all_host_domain();
1311: my $dom = $hostdom{$perlvar{'lonHostID'}};
1312: my $internetdom = $intdom{$perlvar{'lonHostID'}};
1313: my %changes;
1314: if (($dom ne '') && ($internetdom ne '')) {
1315: if (keys(%hostdom)) {
1316: my %currhosttypes;
1317: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/hosttypes.tab")) {
1318: while (my $line = <$fh>) {
1319: chomp($line);
1320: my ($name,$value) = split(/:/,$line);
1321: if (($name ne '') && ($value =~ /^(dom|intdom|other)$/)) {
1322: $currhosttypes{$name} = $value;
1323: }
1324: }
1325: close($fh);
1326: }
1327: if (open(my $fh,'>',"$perlvar{'lonTabDir'}/hosttypes.tab")) {
1328: my $count = 0;
1329: foreach my $lonid (sort(keys(%hostdom))) {
1330: my $type = 'other';
1331: if ($hostdom{$lonid} eq $dom) {
1332: $type = 'dom';
1333: } elsif ($intdom{$lonid} eq $internetdom) {
1334: $type = 'intdom';
1335: }
1336: print $fh "$lonid:$type\n";
1337: if (exists($currhosttypes{$lonid})) {
1338: if ($type ne $currhosttypes{$lonid}) {
1339: $changes{$lonid} = 1;
1340: }
1341: } else {
1342: $changes{$lonid} = 1;
1343: }
1344: $count ++;
1345: }
1346: close($fh);
1347: print "Completed writing host type data for $count hosts.\n";
1348: }
1349: } else {
1350: print "Writing of host types skipped - no hosts found.\n";
1351: }
1352: } else {
1353: print "Writing of host types skipped - could not determine this host's LON-CAPA domain or 'internet' domain.\n";
1354: }
1355: return %changes;
1356: }
1357:
1358: sub update_revocation_list {
1359: my ($result,$changed) = &Apache::lonnet::fetch_crl_pemfile();
1360: if ($result eq 'ok') {
1361: print "Certificate Revocation List (from CA) updated.\n";
1362: } else {
1363: print "Certificate Revocation List from (CA) not updated.\n";
1364: }
1365: return $changed;
1366: }
1367:
1368: sub reset_nosslverify_pids {
1369: my ($fh,%sslrem) = @_;
1370: &checkon_daemon($fh,'lond',40000,'USR2');
1371: my $loncpidfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
1372: my $loncppid;
1373: if ((-e $loncpidfile) && (open(my $pfh,'<',$loncpidfile))) {
1374: $loncppid=<$pfh>;
1375: chomp($loncppid);
1376: close($pfh);
1377: if ($loncppid =~ /^\d+$/) {
1378: my %pids_by_host;
1379: my $docdir = $perlvar{'lonDocRoot'};
1380: if (-d "$docdir/lon-status/loncchld") {
1381: if (opendir(my $dh,"$docdir/lon-status/loncchld")) {
1382: while (my $file = readdir($dh)) {
1383: next if ($file =~ /^\./);
1384: if (open(my $fh,'<',"$docdir/lon-status/loncchld/$file")) {
1385: my $record = <$fh>;
1386: chomp($record);
1387: close($fh);
1388: my ($remotehost,$authmode) = split(/:/,$record);
1389: $pids_by_host{$remotehost}{$authmode}{$file} = 1;
1390: }
1391: }
1392: closedir($dh);
1393: if (keys(%pids_by_host)) {
1394: foreach my $host (keys(%pids_by_host)) {
1395: if ($sslrem{$host}) {
1396: if (ref($pids_by_host{$host}) eq 'HASH') {
1397: if (ref($pids_by_host{$host}{'insecure'}) eq 'HASH') {
1398: if (keys(%{$pids_by_host{$host}{'insecure'}})) {
1399: foreach my $pid (keys(%{$pids_by_host{$host}{'insecure'}})) {
1400: if (open(PIPE,"ps -o ppid= -p $pid |")) {
1401: my $ppid = <PIPE>;
1402: chomp($ppid);
1403: close(PIPE);
1404: $ppid =~ s/(^\s+|\s+$)//g;
1405: if (($ppid == $loncppid) && (kill 0 => $pid)) {
1406: kill QUIT => $pid;
1407: }
1408: }
1409: }
1410: }
1411: }
1412: }
1413: }
1414: }
1415: }
1416: }
1417: }
1418: }
1419: }
1420: return;
1421: }
1422:
1423: sub get_permcount_settings {
1424: my ($domconf) = @_;
1425: my ($defaults,$names) = &Apache::loncommon::lon_status_items();
1426: my (%weights,$threshold,$sysmail,$reportstatus,%exclusions);
1427: foreach my $type ('E','W','N','U') {
1428: $weights{$type} = $defaults->{$type};
1429: }
1430: $threshold = $defaults->{'threshold'};
1431: $sysmail = $defaults->{'sysmail'};
1432: $reportstatus = 1;
1433: if (ref($domconf) eq 'HASH') {
1434: if (ref($domconf->{'contacts'}) eq 'HASH') {
1435: if ($domconf->{'contacts'}{'reportstatus'} == 0) {
1436: $reportstatus = 0;
1437: }
1438: if (ref($domconf->{'contacts'}{'lonstatus'}) eq 'HASH') {
1439: if (ref($domconf->{'contacts'}{'lonstatus'}{weights}) eq 'HASH') {
1440: foreach my $type ('E','W','N','U') {
1441: if (exists($domconf->{'contacts'}{'lonstatus'}{weights}{$type})) {
1442: $weights{$type} = $domconf->{'contacts'}{'lonstatus'}{weights}{$type};
1443: }
1444: }
1445: }
1446: if (ref($domconf->{'contacts'}{'lonstatus'}{'excluded'}) eq 'ARRAY') {
1447: my @excluded = @{$domconf->{'contacts'}{'lonstatus'}{'excluded'}};
1448: if (@excluded) {
1449: map { $exclusions{$_} = 1; } @excluded;
1450: }
1451: }
1452: if (exists($domconf->{'contacts'}{'lonstatus'}{'threshold'})) {
1453: $threshold = $domconf->{'contacts'}{'lonstatus'}{'threshold'};
1454: }
1455: if (exists($domconf->{'contacts'}{'lonstatus'}{'sysmail'})) {
1456: $sysmail = $domconf->{'contacts'}{'lonstatus'}{'sysmail'};
1457: }
1458: }
1459: }
1460: }
1461: return ($threshold,$sysmail,$reportstatus,\%weights,\%exclusions);
1462: }
1463:
1464: sub read_serverhomeIDs {
1465: my %server;
1466: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
1467: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
1468: while (<$fh>) {
1469: my($host,$id) = split(/:/);
1470: chomp($id);
1471: $server{$host} = $id;
1472: }
1473: close($fh);
1474: }
1475: }
1476: return %server;
1477: }
1478:
1479: sub send_mail {
1480: my ($sysmail,$reportstatus) = @_;
1481: my $defdom = $perlvar{'lonDefDomain'};
1482: my $origmail = $perlvar{'lonAdmEMail'};
1483: my $emailto = &Apache::loncommon::build_recipient_list(undef,
1484: 'lonstatusmail',$defdom,$origmail);
1485: if (($totalcount>$sysmail) && ($reportstatus)) {
1486: $emailto.=",$perlvar{'lonSysEMail'}";
1487: }
1488: my $from;
1489: my $hostname=`/bin/hostname`;
1490: chop($hostname);
1491: $hostname=~s/[^\w\.]//g;
1492: if ($hostname) {
1493: $from = 'www@'.$hostname;
1494: }
1495: my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices";
1496: my $loncronmail = "To: $emailto\n".
1497: "From: $from\n".
1498: "Subject: ".$subj."\n".
1499: "Content-type: text/html\; charset=UTF-8\n".
1500: "MIME-Version: 1.0\n\n";
1501: if (open(my $fh,"<$statusdir/index.html")) {
1502: while (<$fh>) {
1503: $loncronmail .= $_;
1504: }
1505: close($fh);
1506: } else {
1507: $loncronmail .= "Failed to read from http://$hostname/lon-status/index.html\n";
1508: }
1509: $loncronmail .= "\n\n";
1510: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
1511: print $mailh $loncronmail;
1512: close($mailh);
1513: print "Sending mail.\n";
1514: } else {
1515: print "Sending mail failed.\n";
1516: }
1517: }
1518:
1519: sub usage {
1520: print(<<USAGE);
1521: loncron - housekeeping program that checks up on various parts of LON-CAPA
1522:
1523: Options:
1524: --help Display
1525: --noemail Do not send the status email
1526: --justcheckconnections Only check the current status of the lonc/d
1527: connections, do not send emails do not
1528: check if the daemons are running, do not
1529: generate lon-status
1530: --justcheckdaemons Only check that all of the Lon-CAPA daemons are
1531: running, do not send emails do not
1532: check the lonc/d connections, do not
1533: generate lon-status
1534: --justreload Only tell the daemons to reload the config files,
1535: do not send emails do not
1536: check if the daemons are running, do not
1537: generate lon-status
1538: --justiptables Only update the dynamic iptables rules for the
1539: lond port; do not send emails, do not
1540: check if the daemons are running, do not
1541: generate lon-status
1542: USAGE
1543: }
1544:
1545: # ================================================================ Main Program
1546: sub main () {
1547: my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
1548: $justreload,$justiptables);
1549: &GetOptions("help" => \$help,
1550: "justcheckdaemons" => \$justcheckdaemons,
1551: "noemail" => \$noemail,
1552: "justcheckconnections" => \$justcheckconnections,
1553: "justreload" => \$justreload,
1554: "justiptables" => \$justiptables
1555: );
1556: if ($help) { &usage(); return; }
1557: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
1558: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1559: %perlvar=%{$perlvarref};
1560: undef $perlvarref;
1561: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
1562: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1563: chdir($perlvar{'lonDaemons'});
1564: # --------------------------------------- Make sure that LON-CAPA is configured
1565: # I only test for one thing here (lonHostID). This is just a safeguard.
1566: if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
1567: print("Unconfigured machine.\n");
1568: my $emailto=$perlvar{'lonSysEMail'};
1569: my $hostname = Sys::Hostname::FQDN::fqdn();
1570: $hostname=~s/\.+/./g;
1571: $hostname=~s/\-+/-/g;
1572: $hostname=~s/[^\w\.-]//g; # make sure is safe to pass through shell
1573: my $subj="LON: Unconfigured machine $hostname";
1574: system("echo 'Unconfigured machine $hostname.' |".
1575: " mail -s '$subj' $emailto > /dev/null");
1576: exit 1;
1577: }
1578:
1579: # ----------------------------- Make sure this process is running from user=www
1580: my $wwwid=getpwnam('www');
1581: if ($wwwid!=$<) {
1582: print("User ID mismatch. This program must be run as user 'www'.\n");
1583: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
1584: my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
1585: system("echo 'User ID mismatch. loncron must be run as user www.' |".
1586: " mail -s '$subj' $emailto > /dev/null");
1587: exit 1;
1588: }
1589:
1590: # -------------------------------------------- Force reload of host information
1591: my $nomemcache;
1592: if ($justcheckdaemons) {
1593: $nomemcache=1;
1594: my $memcachepidfile="$perlvar{'lonDaemons'}/logs/memcached.pid";
1595: my $memcachepid;
1596: if (-e $memcachepidfile) {
1597: my $memfh=IO::File->new($memcachepidfile);
1598: $memcachepid=<$memfh>;
1599: chomp($memcachepid);
1600: if ($memcachepid =~ /^\d+$/ && kill 0 => $memcachepid) {
1601: undef($nomemcache);
1602: }
1603: }
1604: }
1605: if (!$justiptables) {
1606: &Apache::lonnet::load_hosts_tab(1,$nomemcache);
1607: &Apache::lonnet::load_domain_tab(1,$nomemcache);
1608: &Apache::lonnet::get_iphost(1,$nomemcache);
1609: }
1610:
1611: # ----------------------------------------- Force firewall update for lond port
1612:
1613: if ((!$justcheckdaemons) && (!$justreload)) {
1614: my $now = time;
1615: my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
1616: $now.$$.int(rand(10000));
1617: if (open(my $fh,">$tmpfile")) {
1618: my %iphosts = &Apache::lonnet::get_iphost();
1619: foreach my $key (keys(%iphosts)) {
1620: print $fh "$key\n";
1621: }
1622: close($fh);
1623: if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) {
1624: my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
1625: system("$execpath $tmpfile");
1626: unlink('/tmp/lock_lciptables'); # Remove the lock file.
1627: }
1628: unlink($tmpfile);
1629: }
1630: }
1631:
1632: # ---------------------------------------------------------------- Start report
1633:
1634: $errors=0;
1635: $warnings=0;
1636: $notices=0;
1637:
1638:
1639: my $fh;
1640: if (!$justcheckdaemons && !$justcheckconnections && !$justreload && !$justiptables) {
1641: $fh=&start_logging();
1642:
1643: &log_machine_info($fh);
1644: &clean_tmp($fh);
1645: &clean_lonIDs($fh);
1646: &clean_balanceIDs($fh);
1647: &clean_webDAV_sessionIDs($fh);
1648: &clean_ltiIDs($fh);
1649: &check_httpd_logs($fh);
1650: &rotate_lonnet_logs($fh);
1651: &rotate_other_logs($fh);
1652: }
1653: if (!$justcheckconnections && !$justreload && !$justiptables) {
1654: &checkon_daemon($fh,'lonmemcached',40000);
1655: &checkon_daemon($fh,'lonsql',200000);
1656: if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
1657: &checkon_daemon($fh,'lond',40000,'USR2');
1658: }
1659: &checkon_daemon($fh,'lonc',40000,'USR1');
1660: &checkon_daemon($fh,'lonmaxima',40000);
1661: &checkon_daemon($fh,'lonr',40000);
1662: }
1663: if ($justreload) {
1664: &clean_nosslverify($fh);
1665: &write_connection_config();
1666: &write_hosttypes();
1667: &update_revocation_list();
1668: &checkon_daemon($fh,'lond',40000,'USR2');
1669: &checkon_daemon($fh,'lonc',40000,'USR2');
1670: }
1671: if ($justcheckconnections) {
1672: &test_connections($fh);
1673: }
1674: if (!$justcheckdaemons && !$justcheckconnections && !$justreload && !$justiptables) {
1675: my $domconf = &get_domain_config();
1676: my ($threshold,$sysmail,$reportstatus,$weightsref,$exclusionsref) =
1677: &get_permcount_settings($domconf);
1678: &check_delayed_msg($fh,$weightsref,$exclusionsref);
1679: &write_loncaparevs();
1680: &write_serverhomeIDs();
1681: &write_checksums();
1682: &write_hostips();
1683: my %sslrem = &clean_nosslverify($fh);
1684: my %conchgs = &write_connection_config();
1685: my %hosttypechgs = &write_hosttypes();
1686: my $hadcrlchg = &update_revocation_list();
1687: if ((keys(%conchgs) > 0) || (keys(%hosttypechgs) > 0) ||
1688: $hadcrlchg || (keys(%sslrem) > 0)) {
1689: &checkon_daemon($fh,'lond',40000,'USR2');
1690: &reset_nosslverify_pids($fh,%sslrem);
1691: }
1692: &finish_logging($fh,$weightsref);
1693: &log_simplestatus();
1694: if ($totalcount>$threshold && !$noemail) { &send_mail($sysmail,$reportstatus); }
1695: }
1696: }
1697:
1698: &main();
1699: 1;
1700:
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