1: #!/usr/bin/perl
2:
3: # Housekeeping program, started by cron, loncontrol and loncron.pl
4: #
5: # $Id: loncron,v 1.103.2.12 2021/02/02 21:27:34 raeburn Exp $
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
29:
30: $|=1;
31: use strict;
32:
33: use lib '/home/httpd/lib/perl/';
34: use LONCAPA::Configuration;
35: use LONCAPA::Checksumming;
36: use LONCAPA;
37: use Apache::lonnet;
38: use Apache::loncommon;
39:
40: use LWP::UserAgent();
41: use HTTP::Request();
42: use IO::File;
43: use IO::Socket;
44: use HTML::Entities;
45: use Getopt::Long;
46: use GDBM_File qw(GDBM_READER);
47: use Storable qw(thaw);
48: use File::ReadBackwards;
49: use File::Copy;
50: use Sys::Hostname::FQDN();
51:
52: #globals
53: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
54:
55: my $statusdir="/home/httpd/html/lon-status";
56:
57:
58: # --------------------------------------------------------- Output error status
59:
60: sub log {
61: my $fh=shift;
62: if ($fh) { print $fh @_ }
63: }
64:
65: sub errout {
66: my $fh=shift;
67: &log($fh,(<<ENDERROUT));
68: <table border="2" bgcolor="#CCCCCC">
69: <tr><td>Notices</td><td>$notices</td></tr>
70: <tr><td>Warnings</td><td>$warnings</td></tr>
71: <tr><td>Errors</td><td>$errors</td></tr>
72: </table><p><a href="#top">Top</a></p>
73: ENDERROUT
74: }
75:
76: sub rotate_logfile {
77: my ($file,$fh,$description) = @_;
78: my $size=(stat($file))[7];
79: if ($size>40000) {
80: &log($fh,"<p>Rotating $description ...</p>");
81: rename("$file.2","$file.3");
82: rename("$file.1","$file.2");
83: rename("$file","$file.1");
84: }
85: }
86:
87: sub start_daemon {
88: my ($fh,$daemon,$pidfile,$args) = @_;
89: my $progname=$daemon;
90: if ($daemon eq 'lonc') {
91: $progname='loncnew';
92: }
93: my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
94: &rotate_logfile($error_fname,$fh,'error logs');
95: if ($daemon eq 'lonc') {
96: &clean_sockets($fh);
97: }
98: system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
99: sleep 1;
100: if (-e $pidfile) {
101: &log($fh,"<p>Seems like it started ...</p>");
102: my $lfh=IO::File->new("$pidfile");
103: my $daemonpid=<$lfh>;
104: chomp($daemonpid);
105: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
106: return 1;
107: } else {
108: return 0;
109: }
110: }
111: &log($fh,"<p>Seems like that did not work!</p>");
112: $errors++;
113: return 0;
114: }
115:
116: sub checkon_daemon {
117: my ($fh,$daemon,$maxsize,$send,$args)=@_;
118:
119: my $result;
120: &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
121: printf("%-15s ",$daemon);
122: if ($fh) {
123: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
124: if (open(DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
125: while (my $line=<DFH>) {
126: &log($fh,"$line");
127: if ($line=~/INFO/) { $notices++; }
128: if ($line=~/WARNING/) { $notices++; }
129: if ($line=~/CRITICAL/) { $warnings++; }
130: }
131: close (DFH);
132: }
133: }
134: &log($fh,"</tt></p>");
135: }
136:
137: my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
138:
139: my $restartflag=1;
140: my $daemonpid;
141: if (-e $pidfile) {
142: my $lfh=IO::File->new("$pidfile");
143: $daemonpid=<$lfh>;
144: chomp($daemonpid);
145: if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
146: &log($fh,"<h3>$daemon at pid $daemonpid responding");
147: if ($send) { &log($fh,", sending $send"); }
148: &log($fh,"</h3>");
149: if ($send eq 'USR1') { kill USR1 => $daemonpid; }
150: if ($send eq 'USR2') { kill USR2 => $daemonpid; }
151: $restartflag=0;
152: if ($send eq 'USR2') {
153: $result = 'reloaded';
154: print "reloaded\n";
155: } else {
156: $result = 'running';
157: print "running\n";
158: }
159: } else {
160: $errors++;
161: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
162: $restartflag=1;
163: &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
164: }
165: }
166: if ($restartflag==1) {
167: $simplestatus{$daemon}='off';
168: $errors++;
169: my $kadaemon=$daemon;
170: if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
171: &log($fh,'<br /><font color="red">Killall '.$daemon.': '.
172: `killall $kadaemon 2>&1`.' - ');
173: sleep 1;
174: &log($fh,unlink($pidfile).' - '.
175: `killall -9 $kadaemon 2>&1`.
176: '</font><br />');
177: &log($fh,"<h3>$daemon not running, trying to start</h3>");
178:
179: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
180: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
181: $simplestatus{$daemon}='restarted';
182: $result = 'started';
183: print "started\n";
184: } else {
185: $errors++;
186: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
187: &log($fh,"<p>Give it one more try ...</p>");
188: print " ";
189: if (&start_daemon($fh,$daemon,$pidfile,$args)) {
190: &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
191: $simplestatus{$daemon}='restarted';
192: $result = 'started';
193: print "started\n";
194: } else {
195: $result = 'failed';
196: print " failed\n";
197: $simplestatus{$daemon}='failed';
198: $errors++; $errors++;
199: &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
200: &log($fh,"<p>Unable to start $daemon</p>");
201: }
202: }
203: if ($fh) {
204: if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
205: &log($fh,"<p><pre>");
206: if (open(DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|")) {
207: while (my $line=<DFH>) {
208: &log($fh,"$line");
209: if ($line=~/WARNING/) { $notices++; }
210: if ($line=~/CRITICAL/) { $notices++; }
211: }
212: close (DFH);
213: }
214: &log($fh,"</pre></p>");
215: }
216: }
217: }
218:
219: my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
220: &rotate_logfile($fname,$fh,'logs');
221:
222: &errout($fh);
223: return $result;
224: }
225:
226: # --------------------------------------------------------------------- Machine
227: sub log_machine_info {
228: my ($fh)=@_;
229: &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
230: &log($fh,"<h3>loadavg</h3>");
231:
232: my $cpucount;
233: if (open(PIPE,"lscpu |grep '^CPU(s)' 2>&1 |")) {
234: my $info = <PIPE>;
235: chomp($info);
236: ($cpucount) = ($info =~ /^\QCPU(s):\E\s+(\d+)$/);
237: close(PIPE);
238: }
239: if (!$cpucount) {
240: $cpucount = 1;
241: }
242: my %loadtarget = (
243: error => 4.0*$cpucount,
244: warn => 2.0*$cpucount,
245: note => 1.0*$cpucount,
246: );
247: open (LOADAVGH,"/proc/loadavg");
248: my $loadavg=<LOADAVGH>;
249: close (LOADAVGH);
250:
251: &log($fh,"<tt>$loadavg</tt>");
252:
253: my @parts=split(/\s+/,$loadavg);
254: if ($parts[1]>$loadtarget{'error'}) {
255: $errors++;
256: } elsif ($parts[1]>$loadtarget{'warn'}) {
257: $warnings++;
258: } elsif ($parts[1]>$loadtarget{'note'}) {
259: $notices++;
260: }
261:
262: &log($fh,"<h3>df</h3>");
263: &log($fh,"<pre>");
264:
265: open (DFH,"df|");
266: while (my $line=<DFH>) {
267: &log($fh,&encode_entities($line,'<>&"'));
268: @parts=split(/\s+/,$line);
269: my $usage=$parts[4];
270: $usage=~s/\W//g;
271: if ($usage>90) {
272: $warnings++;
273: $notices++;
274: } elsif ($usage>80) {
275: $warnings++;
276: } elsif ($usage>60) {
277: $notices++;
278: }
279: if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
280: }
281: close (DFH);
282: &log($fh,"</pre>");
283:
284:
285: &log($fh,"<h3>ps</h3>");
286: &log($fh,"<pre>");
287: my $psproc=0;
288:
289: open (PSH,"ps aux --cols 140 |");
290: while (my $line=<PSH>) {
291: &log($fh,&encode_entities($line,'<>&"'));
292: $psproc++;
293: }
294: close (PSH);
295: &log($fh,"</pre>");
296:
297: if ($psproc>200) { $notices++; }
298: if ($psproc>250) { $notices++; }
299:
300: &log($fh,"<h3>distprobe</h3>");
301: &log($fh,"<pre>");
302: &log($fh,&encode_entities(&LONCAPA::distro(),'<>&"'));
303: &log($fh,"</pre>");
304:
305: &errout($fh);
306: }
307:
308: sub start_logging {
309: my $fh=IO::File->new(">$statusdir/newstatus.html");
310: my %simplestatus=();
311: my $now=time;
312: my $date=localtime($now);
313:
314:
315: &log($fh,(<<ENDHEADERS));
316: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
317: <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
318: <head>
319: <title>LON Status Report $perlvar{'lonHostID'}</title>
320: <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
321: </head>
322: <body bgcolor="#AAAAAA">
323: <a name="top" />
324: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
325: <h2>$date ($now)</h2>
326: <ol>
327: <li><a href="#configuration">Configuration</a></li>
328: <li><a href="#machine">Machine Information</a></li>
329: <li><a href="#tmp">Temporary Files</a></li>
330: <li><a href="#tokens">Session Tokens</a></li>
331: <li><a href="#webdav">WebDAV Session Tokens</a></li>
332: <li><a href="#httpd">httpd</a></li>
333: <li><a href="#lonsql">lonsql</a></li>
334: <li><a href="#lond">lond</a></li>
335: <li><a href="#lonc">lonc</a></li>
336: <li><a href="#lonnet">lonnet</a></li>
337: <li><a href="#connections">Connections</a></li>
338: <li><a href="#delayed">Delayed Messages</a></li>
339: <li><a href="#errcount">Error Count</a></li>
340: </ol>
341: <hr />
342: <a name="configuration" />
343: <h2>Configuration</h2>
344: <h3>PerlVars</h3>
345: <table border="2">
346: ENDHEADERS
347:
348: foreach my $varname (sort(keys(%perlvar))) {
349: &log($fh,"<tr><td>$varname</td><td>".
350: &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
351: }
352: &log($fh,"</table><h3>Hosts</h3><table border='2'>");
353: my %hostname = &Apache::lonnet::all_hostnames();
354: foreach my $id (sort(keys(%hostname))) {
355: my $role = (&Apache::lonnet::is_library($id) ? 'library'
356: : 'access');
357: &log($fh,
358: "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
359: "</td><td>".$role.
360: "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
361: }
362: &log($fh,"</table><h3>Spare Hosts</h3>");
363: if (keys(%Apache::lonnet::spareid) > 0) {
364: &log($fh,"<ul>");
365: foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
366: &log($fh,"<li>$type\n<ol>");
367: foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
368: &log($fh,"<li>$id</li>\n");
369: }
370: &log($fh,"</ol>\n</li>\n");
371: }
372: &log($fh,"</ul>\n");
373: } else {
374: &log($fh,"No spare hosts specified<br />\n");
375: }
376: return $fh;
377: }
378:
379: # --------------------------------------------------------------- clean out tmp
380: sub clean_tmp {
381: my ($fh)=@_;
382: &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
383: my ($cleaned,$old,$removed) = (0,0,0);
384: my %errors = (
385: dir => [],
386: file => [],
387: failopen => [],
388: );
389: my %error_titles = (
390: dir => 'failed to remove empty directory:',
391: file => 'failed to unlike stale file',
392: failopen => 'failed to open file or directory'
393: );
394: ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
395: &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
396: foreach my $key (sort(keys(%errors))) {
397: if (ref($errors{$key}) eq 'ARRAY') {
398: if (@{$errors{$key}} > 0) {
399: &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
400: join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
401: }
402: }
403: }
404: }
405:
406: sub recursive_clean_tmp {
407: my ($subdir,$cleaned,$old,$removed,$errors) = @_;
408: my $base = "$perlvar{'lonDaemons'}/tmp";
409: my $path = $base;
410: next if ($subdir =~ m{\.\./});
411: next unless (ref($errors) eq 'HASH');
412: unless ($subdir eq '') {
413: $path .= '/'.$subdir;
414: }
415: if (opendir(my $dh,"$path")) {
416: while (my $file = readdir($dh)) {
417: next if ($file =~ /^\.\.?$/);
418: my $fname = "$path/$file";
419: if (-d $fname) {
420: my $innerdir;
421: if ($subdir eq '') {
422: $innerdir = $file;
423: } else {
424: $innerdir = $subdir.'/'.$file;
425: }
426: ($cleaned,$old,$removed) =
427: &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
428: my @doms = &Apache::lonnet::current_machine_domains();
429:
430: if (open(my $dirhandle,$fname)) {
431: unless (($innerdir eq 'helprequests') ||
432: (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
433: my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
434: join('&&',@contents)."\n";
435: if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
436: closedir($dirhandle);
437: if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
438: if (rmdir($fname)) {
439: $removed ++;
440: } elsif (ref($errors->{dir}) eq 'ARRAY') {
441: push(@{$errors->{dir}},$fname);
442: }
443: }
444: }
445: } else {
446: closedir($dirhandle);
447: }
448: }
449: } else {
450: my ($dev,$ino,$mode,$nlink,
451: $uid,$gid,$rdev,$size,
452: $atime,$mtime,$ctime,
453: $blksize,$blocks)=stat($fname);
454: my $now=time;
455: my $since=$now-$mtime;
456: if ($since>$perlvar{'lonExpire'}) {
457: if ($subdir eq '') {
458: my $line='';
459: if ($fname =~ /\.db$/) {
460: if (unlink($fname)) {
461: $cleaned++;
462: } elsif (ref($errors->{file}) eq 'ARRAY') {
463: push(@{$errors->{file}},$fname);
464: }
465: } elsif (open(PROBE,$fname)) {
466: my $line='';
467: $line=<PROBE>;
468: close(PROBE);
469: if ($line=~/^CHECKOUTTOKEN\&/) {
470: if ($since>365*$perlvar{'lonExpire'}) {
471: if (unlink($fname)) {
472: $cleaned++;
473: } elsif (ref($errors->{file}) eq 'ARRAY') {
474: push(@{$errors->{file}},$fname);
475: }
476: } else {
477: $old++;
478: }
479: } else {
480: if (unlink($fname)) {
481: $cleaned++;
482: } elsif (ref($errors->{file}) eq 'ARRAY') {
483: push(@{$errors->{file}},$fname);
484: }
485: }
486: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
487: push(@{$errors->{failopen}},$fname);
488: }
489: } else {
490: if (unlink($fname)) {
491: $cleaned++;
492: } elsif (ref($errors->{file}) eq 'ARRAY') {
493: push(@{$errors->{file}},$fname);
494: }
495: }
496: }
497: }
498: }
499: closedir($dh);
500: } elsif (ref($errors->{failopen}) eq 'ARRAY') {
501: push(@{$errors->{failopen}},$path);
502: }
503: return ($cleaned,$old,$removed);
504: }
505:
506: # ------------------------------------------------------------ clean out lonIDs
507: sub clean_lonIDs {
508: my ($fh)=@_;
509: &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
510: my $cleaned=0;
511: my $active=0;
512: while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
513: my $now=time;
514: if (-l $fname) {
515: my $linkfname = readlink($fname);
516: if (-f $linkfname) {
517: if ($linkfname =~ m{^$perlvar{'lonIDsDir'}/[^/]+\.id$}) {
518: my @data = stat($linkfname);
519: my $mtime = $data[9];
520: my $since=$now-$mtime;
521: if ($since>$perlvar{'lonExpire'}) {
522: if (unlink($linkfname)) {
523: $cleaned++;
524: &log($fh,"Unlinking $linkfname<br />");
525: unlink($fname);
526: }
527: }
528: }
529: } else {
530: unlink($fname);
531: }
532: } elsif (-f $fname) {
533: my @data = stat($fname);
534: my $mtime = $data[9];
535: my $since=$now-$mtime;
536: if ($since>$perlvar{'lonExpire'}) {
537: if (unlink($fname)) {
538: $cleaned++;
539: &log($fh,"Unlinking $fname<br />");
540: }
541: } else {
542: $active++;
543: }
544: }
545: }
546: &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
547: &log($fh,"<h3>$active open session(s)</h3>");
548: }
549:
550: # -------------------------------------------------------- clean out balanceIDs
551:
552: sub clean_balanceIDs {
553: my ($fh)=@_;
554: &log($fh,'<hr /><a name="balcookies" /><h2>Session Tokens</h2>');
555: my $cleaned=0;
556: my $active=0;
557: if (-d $perlvar{'lonBalanceDir'}) {
558: while (my $fname=<$perlvar{'lonBalanceDir'}/*.id>) {
559: my ($dev,$ino,$mode,$nlink,
560: $uid,$gid,$rdev,$size,
561: $atime,$mtime,$ctime,
562: $blksize,$blocks)=stat($fname);
563: my $now=time;
564: my $since=$now-$mtime;
565: if ($since>$perlvar{'lonExpire'}) {
566: $cleaned++;
567: &log($fh,"Unlinking $fname<br />");
568: unlink("$fname");
569: } else {
570: $active++;
571: }
572: }
573: }
574: &log($fh,"<p>Cleaned up ".$cleaned." stale balancer files</p>");
575: &log($fh,"<h3>$active unexpired balancer files</h3>");
576: }
577:
578: # ------------------------------------------------ clean out webDAV Session IDs
579: sub clean_webDAV_sessionIDs {
580: my ($fh)=@_;
581: if ($perlvar{'lonRole'} eq 'library') {
582: &log($fh,'<hr /><a name="webdav" /><h2>WebDAV Session Tokens</h2>');
583: my $cleaned=0;
584: my $active=0;
585: my $now = time;
586: if (-d $perlvar{'lonDAVsessDir'}) {
587: while (my $fname=<$perlvar{'lonDAVsessDir'}/*>) {
588: my @stats = stat($fname);
589: my $since=$now-$stats[9];
590: if ($since>$perlvar{'lonExpire'}) {
591: $cleaned++;
592: &log($fh,"Unlinking $fname<br />");
593: unlink("$fname");
594: } else {
595: $active++;
596: }
597: }
598: &log($fh,"<p>Cleaned up ".$cleaned." stale webDAV session token(s).</p>");
599: &log($fh,"<h3>$active open webDAV session(s)</h3>");
600: }
601: }
602: }
603:
604: # ----------------------------------------------------------- clean out sockets
605: sub clean_sockets {
606: my ($fh)=@_;
607: my $cleaned=0;
608: opendir(SOCKETS,$perlvar{'lonSockDir'});
609: while (my $fname=readdir(SOCKETS)) {
610: next if (-d $fname
611: || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
612: $cleaned++;
613: &log($fh,"Unlinking $fname<br />");
614: unlink("/home/httpd/sockets/$fname");
615: }
616: &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
617: }
618:
619:
620: # ----------------------------------------------------------------------- httpd
621: sub check_httpd_logs {
622: my ($fh)=@_;
623: if (open(PIPE,"./lchttpdlogs|")) {
624: while (my $line=<PIPE>) {
625: &log($fh,$line);
626: if ($line=~/\[error\]/) { $notices++; }
627: }
628: close(PIPE);
629: }
630: &errout($fh);
631: }
632:
633: # ---------------------------------------------------------------------- lonnet
634:
635: sub rotate_lonnet_logs {
636: my ($fh)=@_;
637: &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
638: print "Checking logs.\n";
639: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
640: open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
641: while (my $line=<DFH>) {
642: &log($fh,&encode_entities($line,'<>&"'));
643: }
644: close (DFH);
645: }
646: &log($fh,"</pre><h3>Perm Log</h3><pre>");
647:
648: if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
649: open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
650: while (my $line=<DFH>) {
651: &log($fh,&encode_entities($line,'<>&"'));
652: }
653: close (DFH);
654: } else { &log($fh,"No perm log\n") }
655:
656: my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
657: &rotate_logfile($fname,$fh,'lonnet log');
658:
659: &log($fh,"</pre>");
660: &errout($fh);
661: }
662:
663: sub rotate_other_logs {
664: my ($fh) = @_;
665: my %logs = (
666: autoenroll => 'Auto Enroll log',
667: autocreate => 'Create Course log',
668: searchcat => 'Search Cataloguing log',
669: autoupdate => 'Auto Update log',
670: refreshcourseids_db => 'Refresh CourseIDs db log',
671: );
672: foreach my $item (keys(%logs)) {
673: my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
674: &rotate_logfile($fname,$fh,$logs{$item});
675: }
676: }
677:
678: # ----------------------------------------------------------------- Connections
679: sub test_connections {
680: my ($fh)=@_;
681: &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
682: print "Testing connections.\n";
683: &log($fh,"<table border='2'>");
684: my ($good,$bad)=(0,0);
685: my %hostname = &Apache::lonnet::all_hostnames();
686: foreach my $tryserver (sort(keys(%hostname))) {
687: print(".");
688: my $result;
689: my $answer=&Apache::lonnet::reply("ping",$tryserver);
690: if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
691: $result="<b>ok</b>";
692: $good++;
693: } else {
694: $result=$answer;
695: $warnings++;
696: if ($answer eq 'con_lost') {
697: $bad++;
698: $warnings++;
699: } else {
700: $good++; #self connection
701: }
702: }
703: if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
704: &log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
705: }
706: &log($fh,"</table>");
707: print "\n$good good, $bad bad connections\n";
708: &errout($fh);
709: }
710:
711:
712: # ------------------------------------------------------------ Delayed messages
713: sub check_delayed_msg {
714: my ($fh,$weightsref,$exclusionsref)=@_;
715: &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
716: print "Checking buffers.\n";
717:
718: &log($fh,'<h3>Scanning Permanent Log</h3>');
719:
720: my $unsend=0;
721: my $ignored=0;
722:
723: my %hostname = &Apache::lonnet::all_hostnames();
724: my $numhosts = scalar(keys(%hostname));
725: my $checkbackwards = 0;
726: my $checkfrom = 0;
727: my $checkexcluded = 0;
728: my (%bymachine,%weights,%exclusions,%serverhomes);
729: if (ref($weightsref) eq 'HASH') {
730: %weights = %{$weightsref};
731: }
732: if (ref($exclusionsref) eq 'HASH') {
733: %exclusions = %{$exclusionsref};
734: if (keys(%exclusions)) {
735: $checkexcluded = 1;
736: %serverhomes = &read_serverhomeIDs();
737: }
738: }
739:
740: #
741: # For LON-CAPA 1.2.0 to 2.1.3 (release dates: 8/31/2004 and 3/31/2006) any
742: # entry logged in lonnet.perm.log for completion of a delayed (critical)
743: # transaction lacked the hostID for the remote node to which the command
744: # to be completed was sent.
745: #
746: # Because of this, exclusion of items in lonnet.perm.log for nodes which are
747: # no longer part of the cluster from adding to the overall "unsend" count
748: # needs additional effort besides the changes made in loncron rev. 1.105.
749: #
750: # For "S" (completion) events logging in LON-CAPA 1.2.0 through 2.1.3 included
751: # "LondTransaction=HASH(hexadecimal)->getClient() :$cmd, where the hexadecimal
752: # is a memory location, and $cmd is the command sent to the remote node.
753: #
754: # Starting with 2.2.0 (released 8/21/2006) logging for "S" (completion) events
755: # had sethost:$host_id:$cmd after LondTransaction=HASH(hexadecimal)->getClient()
756: #
757: # Starting with 2.4.1 (released 6/13/2007) logging for "S" replaced echoing the
758: # getClient() call with the result of the Transaction->getClient() call itself
759: # undef for completion of delivery of a delayed message.
760: #
761: # The net effect of these changes is that lonnet.perm.log is now accessed three
762: # times: (a) oldest record is checked, if earlier than release date for 2.5.0
763: # then (b) file is read backwards, with timestamp recorded for most recent
764: # instance of logged "S" event for "update" command without "sethost:$host_id:"
765: # then (c) file is read forward with records ignored which predate the timestamp
766: # recorded in (b), if one was found.
767: #
768: # In (c), when calculating the unsend total, i.e., the difference between delayed
769: # transactions ("D") and sent transactions ("S"), transactions are ignored if the
770: # target node is no longer in the cluster, and also (for "update" commands), if
771: # the target node is in the list of nodes excluded from the count, in the domain
772: # configuration for this machine's default domain. The idea here is to remove
773: # delayed "update" commands for nodes for which inbound access to port 5663,
774: # is blocked, but are still part of the LON-CAPA network, (i.e., they can still
775: # replicate content from other nodes).
776: #
777:
778: my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
779: if (defined($dfh)) {
780: while (my $line=<$dfh>) {
781: my ($time,$sdf,$rest)=split(/:/,$line,3);
782: if ($time < 1541185772) {
783: $checkbackwards = 1;
784: }
785: last;
786: }
787: undef $dfh;
788: }
789:
790: if ($checkbackwards) {
791: if (tie *BW, 'File::ReadBackwards', "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
792: while(my $line=<BW>) {
793: if ($line =~ /\QLondTransaction=HASH\E[^:]+:update:/) {
794: ($checkfrom) = split(/:/,$line,2);
795: last;
796: }
797: }
798: close(BW);
799: }
800: }
801: $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
802: if (defined($dfh)) {
803: while (my $line=<$dfh>) {
804: my ($time,$sdf,$rest)=split(/:/,$line,3);
805: next unless (($sdf eq 'F') || ($sdf eq 'S') || ($sdf eq 'D'));
806: next if (($checkfrom) && ($time <= $checkfrom));
807: my ($dserv,$dcmd);
808: if ($sdf eq 'S') {
809: my ($serva,$cmda,$servb,$cmdb) = split(/:/,$rest);
810: if ($cmda eq 'sethost') {
811: chomp($cmdb);
812: $dcmd = $cmdb;
813: } else {
814: $dcmd = $cmda;
815: }
816: if (($serva =~ /^LondTransaction/) || ($serva eq '')) {
817: unless (($servb eq '') || ($servb =~ m{^/})) {
818: $dserv = $servb;
819: }
820: } else {
821: $dserv = $serva;
822: }
823: } else {
824: ($dserv,$dcmd) = split(/:/,$rest);
825: }
826: if ($sdf eq 'F') {
827: my $local=localtime($time);
828: &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br />");
829: $warnings++;
830: }
831: next if ((($dserv eq '') || ($dcmd eq '')) && ($sdf ne 'F'));
832: if ($sdf eq 'S') {
833: if ($dcmd eq 'update') {
834: if ($hostname{$dserv}) {
835: if ($exclusions{$serverhomes{$hostname{$dserv}}}) {
836: $ignored --;
837: } else {
838: $unsend --;
839: }
840: }
841: if (exists($bymachine{$dserv})) {
842: $bymachine{$dserv} --;
843: } else {
844: $bymachine{$dserv} = -1;
845: }
846: } else {
847: if ($hostname{$dserv}) {
848: $unsend --;
849: }
850: }
851: } elsif ($sdf eq 'D') {
852: if ($dcmd eq 'update') {
853: if ($hostname{$dserv}) {
854: if ($exclusions{$serverhomes{$hostname{$dserv}}}) {
855: $ignored ++;
856: } else {
857: $unsend ++;
858: }
859: }
860: if (exists($bymachine{$dserv})) {
861: $bymachine{$dserv} ++;
862: } else {
863: $bymachine{$dserv} = 1;
864: }
865: } else {
866: if ($hostname{$dserv}) {
867: $unsend ++;
868: }
869: }
870: }
871: }
872: undef $dfh;
873: my $nodest = 0;
874: my $retired = 0;
875: my %active;
876: if (keys(%bymachine)) {
877: unless ($checkexcluded) {
878: %serverhomes = &read_serverhomeIDs();
879: }
880: foreach my $key (keys(%bymachine)) {
881: if ($bymachine{$key} > 0) {
882: if ($hostname{$key}) {
883: $active{$serverhomes{$hostname{$key}}} += $bymachine{$key};
884: } else {
885: $retired ++;
886: $nodest += $bymachine{$key};
887: }
888: }
889: }
890: }
891: if (keys(%active)) {
892: &log($fh,"<p>Unsend messages by node, active (undegraded) nodes in cluster</p>\n");
893: foreach my $key (sort(keys(%active))) {
894: &log($fh,&encode_entities("$key => $active{$key}",'<>&"')."\n");
895: }
896: }
897: &log($fh,"<p>Total unsend messages: <b>$unsend</b> for ".scalar(keys(%active))." active (undegraded) nodes in cluster.</p>\n");
898: if (keys(%exclusions) > 0) {
899: &log($fh,"<p>Total incomplete updates <b>$ignored</b> for ".scalar(keys(%exclusions))." degraded nodes in cluster.</p>\n");
900: }
901: if ($retired) {
902: &log($fh,"<p>Total unsent <b>$nodest</b> for $retired nodes no longer in cluster.</p>\n");
903: }
904: if ($unsend > 0) {
905: $warnings=$warnings+$weights{'U'}*$unsend;
906: }
907: }
908:
909: if ($unsend) { $simplestatus{'unsend'}=$unsend; }
910: &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
911: # list directory with delayed messages and remember offline servers
912: my %servers=();
913: open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
914: while (my $line=<DFH>) {
915: my ($server)=($line=~/\.(\w+)$/);
916: if ($server) { $servers{$server}=1; }
917: &log($fh,&encode_entities($line,'<>&"'));
918: }
919: &log($fh,"</pre>\n");
920: close (DFH);
921: # pong to all servers that have delayed messages
922: # this will trigger a reverse connection, which should flush the buffers
923: foreach my $tryserver (sort(keys(%servers))) {
924: if ($hostname{$tryserver} || !$numhosts) {
925: my $answer;
926: eval {
927: local $SIG{ ALRM } = sub { die "TIMEOUT" };
928: alarm(20);
929: $answer = &Apache::lonnet::reply("pong",$tryserver);
930: alarm(0);
931: };
932: if ($@ && $@ =~ m/TIMEOUT/) {
933: &log($fh,"Attempted pong to $tryserver timed out<br />");
934: print "Time out while contacting: $tryserver for pong.\n";
935: } else {
936: &log($fh,"Pong to $tryserver: $answer<br />");
937: }
938: } else {
939: &log($fh,"$tryserver has delayed messages, but is not part of the cluster -- skipping 'Pong'.<br />");
940: }
941: }
942: }
943:
944: sub finish_logging {
945: my ($fh,$weightsref)=@_;
946: my %weights;
947: if (ref($weightsref) eq 'HASH') {
948: %weights = %{$weightsref};
949: }
950: &log($fh,"<a name='errcount' />\n");
951: $totalcount=($weights{'N'}*$notices)+($weights{'W'}*$warnings)+($weights{'E'}*$errors);
952: &errout($fh);
953: &log($fh,"<h1>Total Error Count: $totalcount</h1>");
954: my $now=time;
955: my $date=localtime($now);
956: &log($fh,"<hr />$date ($now)</body></html>\n");
957: print "lon-status webpage updated.\n";
958: $fh->close();
959:
960: if ($errors) { $simplestatus{'errors'}=$errors; }
961: if ($warnings) { $simplestatus{'warnings'}=$warnings; }
962: if ($notices) { $simplestatus{'notices'}=$notices; }
963: $simplestatus{'time'}=time;
964: }
965:
966: sub log_simplestatus {
967: rename("$statusdir/newstatus.html","$statusdir/index.html");
968:
969: my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
970: foreach (keys %simplestatus) {
971: print $sfh $_.'='.$simplestatus{$_}.'&';
972: }
973: print $sfh "\n";
974: $sfh->close();
975: }
976:
977: sub write_loncaparevs {
978: print "Retrieving LON-CAPA version information.\n";
979: my %hostname = &Apache::lonnet::all_hostnames();
980: my $output;
981: foreach my $id (sort(keys(%hostname))) {
982: if ($id ne '') {
983: my $loncaparev;
984: eval {
985: local $SIG{ ALRM } = sub { die "TIMEOUT" };
986: alarm(10);
987: $loncaparev =
988: &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
989: alarm(0);
990: };
991: if ($@ && $@ =~ m/TIMEOUT/) {
992: print "Time out while contacting lonHost: $id for version.\n";
993: }
994: if ($loncaparev =~ /^[\w.\-]+$/) {
995: $output .= $id.':'.$loncaparev."\n";
996: }
997: }
998: }
999: if ($output) {
1000: if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
1001: print $fh $output;
1002: close($fh);
1003: &Apache::lonnet::load_loncaparevs();
1004: }
1005: }
1006: return;
1007: }
1008:
1009: sub write_serverhomeIDs {
1010: print "Retrieving LON-CAPA lonHostID information.\n";
1011: my %name_to_host = &Apache::lonnet::all_names();
1012: my $output;
1013: foreach my $name (sort(keys(%name_to_host))) {
1014: if ($name ne '') {
1015: if (ref($name_to_host{$name}) eq 'ARRAY') {
1016: my $serverhomeID;
1017: eval {
1018: local $SIG{ ALRM } = sub { die "TIMEOUT" };
1019: alarm(10);
1020: $serverhomeID =
1021: &Apache::lonnet::get_server_homeID($name,1,'loncron');
1022: alarm(0);
1023: };
1024: if ($@ && $@ =~ m/TIMEOUT/) {
1025: print "Time out while contacting server: $name\n";
1026: }
1027: if ($serverhomeID ne '') {
1028: $output .= $name.':'.$serverhomeID."\n";
1029: } else {
1030: $output .= $name.':'.$name_to_host{$name}->[0]."\n";
1031: }
1032: }
1033: }
1034: }
1035: if ($output) {
1036: if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
1037: print $fh $output;
1038: close($fh);
1039: &Apache::lonnet::load_serverhomeIDs();
1040: }
1041: }
1042: return;
1043: }
1044:
1045: sub write_checksums {
1046: my $distro = &LONCAPA::distro();
1047: if ($distro) {
1048: print "Retrieving file version and checksumming.\n";
1049: my $numchksums = 0;
1050: my ($chksumsref,$versionsref) =
1051: &LONCAPA::Checksumming::get_checksums($distro,$perlvar{'lonDaemons'},
1052: $perlvar{'lonLib'},
1053: $perlvar{'lonIncludes'},
1054: $perlvar{'lonTabDir'});
1055: if (ref($chksumsref) eq 'HASH') {
1056: $numchksums = scalar(keys(%{$chksumsref}));
1057: }
1058: print "File version retrieved and checksumming completed for $numchksums files.\n";
1059: } else {
1060: print "File version retrieval and checksumming skipped - could not determine Linux distro.\n";
1061: }
1062: return;
1063: }
1064:
1065: sub write_hostips {
1066: my $lontabdir = $perlvar{'lonTabDir'};
1067: my $defdom = $perlvar{'lonDefDomain'};
1068: my $lonhost = $perlvar{'lonHostID'};
1069: my $newfile = "$lontabdir/currhostips.tab";
1070: my $oldfile = "$lontabdir/prevhostips.tab";
1071: my (%prevhosts,%currhosts,%ipchange);
1072: if ((-e $newfile) && (-s $newfile)) {
1073: move($newfile,$oldfile);
1074: chmod(0644,$oldfile);
1075: if (open(my $fh,'<',$oldfile)) {
1076: while (my $line=<$fh>) {
1077: chomp($line);
1078: if ($line =~ /^([^:]+):([\d.]+)$/) {
1079: $prevhosts{$1} = $2;
1080: }
1081: }
1082: close($fh);
1083: }
1084: }
1085: my ($ip_info,$cached) =
1086: &Apache::lonnet::is_cached_new('iphost','iphost');
1087: if (!$cached) {
1088: &Apache::lonnet::get_iphost();
1089: ($ip_info,$cached) =
1090: &Apache::lonnet::is_cached_new('iphost','iphost');
1091: }
1092: if (ref($ip_info) eq 'ARRAY') {
1093: %currhosts = %{$ip_info->[1]};
1094: if (open(my $fh,'>',$newfile)) {
1095: foreach my $key (keys(%currhosts)) {
1096: print $fh "$key:$currhosts{$key}\n";
1097: }
1098: close($fh);
1099: chmod(0644,$newfile);
1100: }
1101: }
1102: if (keys(%prevhosts) && keys(%currhosts)) {
1103: foreach my $key (keys(%prevhosts)) {
1104: unless ($currhosts{$key} eq $prevhosts{$key}) {
1105: $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key};
1106: }
1107: }
1108: foreach my $key (keys(%currhosts)) {
1109: unless ($currhosts{$key} eq $prevhosts{$key}) {
1110: $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key};
1111: }
1112: }
1113: }
1114: if (&Apache::lonnet::domain($defdom,'primary') eq $lonhost) {
1115: if (keys(%ipchange)) {
1116: if (open(my $fh,'>>',$perlvar{'lonDaemons'}.'/logs/hostip.log')) {
1117: print $fh "********************\n".localtime(time).' Changes --'."\n".
1118: "| Hostname | Previous IP | New IP |\n".
1119: " --------------------------------- \n";
1120: foreach my $hostname (sort(keys(%ipchange))) {
1121: print $fh "| $hostname | $ipchange{$hostname} |\n";
1122: }
1123: print $fh "\n*******************\n\n";
1124: close($fh);
1125: }
1126: my $emailto = &Apache::loncommon::build_recipient_list(undef,
1127: 'hostipmail',$defdom);
1128: if ($emailto) {
1129: my $subject = "LON-CAPA Hostname to IP change ($perlvar{'lonHostID'})";
1130: my $chgmail = "To: $emailto\n".
1131: "Subject: $subject\n".
1132: "Content-type: text/plain\; charset=UTF-8\n".
1133: "MIME-Version: 1.0\n\n".
1134: "Host/IP changes\n".
1135: " \n".
1136: "| Hostname | Previous IP | New IP |\n".
1137: " --------------------------------- \n";
1138: foreach my $hostname (sort(keys(%ipchange))) {
1139: $chgmail .= "| $hostname | $ipchange{$hostname} |\n";
1140: }
1141: $chgmail .= "\n\n";
1142: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
1143: print $mailh $chgmail;
1144: close($mailh);
1145: print "Sending mail notification of hostname/IP changes.\n";
1146: }
1147: }
1148: }
1149: }
1150: return;
1151: }
1152:
1153: sub get_domain_config {
1154: my ($dom,$primlibserv,$isprimary,$url,%confhash);
1155: $dom = $perlvar{'lonDefDomain'};
1156: $primlibserv = &Apache::lonnet::domain($dom,'primary');
1157: if ($primlibserv eq $perlvar{'lonHostID'}) {
1158: $isprimary = 1;
1159: } elsif ($primlibserv ne '') {
1160: my $protocol = $Apache::lonnet::protocol{$primlibserv};
1161: my $hostname = &Apache::lonnet::hostname($primlibserv);
1162: unless ($protocol eq 'https') {
1163: $protocol = 'http';
1164: }
1165: $url = $protocol.'://'.$hostname.'/cgi-bin/listdomconfig.pl?primary='.$primlibserv.'&format=raw';
1166: }
1167: if ($isprimary) {
1168: my $lonusersdir = $perlvar{'lonUsersDir'};
1169: my $fname = $lonusersdir.'/'.$dom.'/configuration.db';
1170: if (-e $fname) {
1171: my $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER());
1172: if (ref($dbref) eq 'HASH') {
1173: foreach my $key (sort(keys(%{$dbref}))) {
1174: my $value = $dbref->{$key};
1175: if ($value =~ s/^__FROZEN__//) {
1176: $value = thaw(&LONCAPA::unescape($value));
1177: } else {
1178: $value = &LONCAPA::unescape($value);
1179: }
1180: $confhash{$key} = $value;
1181: }
1182: &LONCAPA::locking_hash_untie($dbref);
1183: }
1184: }
1185: } else {
1186: my $ua=new LWP::UserAgent;
1187: $ua->timeout(5);
1188: my $request=new HTTP::Request('GET',$url);
1189: my $response=$ua->request($request);
1190: unless ($response->is_error()) {
1191: my $content = $response->content;
1192: if ($content) {
1193: my @pairs=split(/\&/,$content);
1194: foreach my $item (@pairs) {
1195: my ($key,$value)=split(/=/,$item,2);
1196: my $what = &LONCAPA::unescape($key);
1197: if ($value =~ s/^__FROZEN__//) {
1198: $value = thaw(&LONCAPA::unescape($value));
1199: } else {
1200: $value = &LONCAPA::unescape($value);
1201: }
1202: $confhash{$what}=$value;
1203: }
1204: }
1205: }
1206: }
1207: return \%confhash;
1208: }
1209:
1210: sub get_permcount_settings {
1211: my ($domconf) = @_;
1212: my ($defaults,$names) = &Apache::loncommon::lon_status_items();
1213: my (%weights,$threshold,$sysmail,$reportstatus,%exclusions);
1214: foreach my $type ('E','W','N','U') {
1215: $weights{$type} = $defaults->{$type};
1216: }
1217: $threshold = $defaults->{'threshold'};
1218: $sysmail = $defaults->{'sysmail'};
1219: $reportstatus = 1;
1220: if (ref($domconf) eq 'HASH') {
1221: if (ref($domconf->{'contacts'}) eq 'HASH') {
1222: if ($domconf->{'contacts'}{'reportstatus'} == 0) {
1223: $reportstatus = 0;
1224: }
1225: if (ref($domconf->{'contacts'}{'lonstatus'}) eq 'HASH') {
1226: if (ref($domconf->{'contacts'}{'lonstatus'}{weights}) eq 'HASH') {
1227: foreach my $type ('E','W','N','U') {
1228: if (exists($domconf->{'contacts'}{'lonstatus'}{weights}{$type})) {
1229: $weights{$type} = $domconf->{'contacts'}{'lonstatus'}{weights}{$type};
1230: }
1231: }
1232: }
1233: if (ref($domconf->{'contacts'}{'lonstatus'}{'excluded'}) eq 'ARRAY') {
1234: my @excluded = @{$domconf->{'contacts'}{'lonstatus'}{'excluded'}};
1235: if (@excluded) {
1236: map { $exclusions{$_} = 1; } @excluded;
1237: }
1238: }
1239: if (exists($domconf->{'contacts'}{'lonstatus'}{'threshold'})) {
1240: $threshold = $domconf->{'contacts'}{'lonstatus'}{'threshold'};
1241: }
1242: if (exists($domconf->{'contacts'}{'lonstatus'}{'sysmail'})) {
1243: $sysmail = $domconf->{'contacts'}{'lonstatus'}{'sysmail'};
1244: }
1245: }
1246: }
1247: }
1248: return ($threshold,$sysmail,$reportstatus,\%weights,\%exclusions);
1249: }
1250:
1251: sub read_serverhomeIDs {
1252: my %server;
1253: if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") {
1254: if (open(my $fh,'<',"$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
1255: while (<$fh>) {
1256: my($host,$id) = split(/:/);
1257: chomp($id);
1258: $server{$host} = $id;
1259: }
1260: close($fh);
1261: }
1262: }
1263: return %server;
1264: }
1265:
1266: sub send_mail {
1267: my ($sysmail,$reportstatus) = @_;
1268: my $defdom = $perlvar{'lonDefDomain'};
1269: my $origmail = $perlvar{'lonAdmEMail'};
1270: my $emailto = &Apache::loncommon::build_recipient_list(undef,
1271: 'lonstatusmail',$defdom,$origmail);
1272: if (($totalcount>$sysmail) && ($reportstatus)) {
1273: $emailto.=",$perlvar{'lonSysEMail'}";
1274: }
1275: my $from;
1276: my $hostname=`/bin/hostname`;
1277: chop($hostname);
1278: $hostname=~s/[^\w\.]//g;
1279: if ($hostname) {
1280: $from = 'www@'.$hostname;
1281: }
1282: my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices";
1283: my $loncronmail = "To: $emailto\n".
1284: "From: $from\n".
1285: "Subject: ".$subj."\n".
1286: "Content-type: text/html\; charset=UTF-8\n".
1287: "MIME-Version: 1.0\n\n";
1288: if (open(my $fh,"<$statusdir/index.html")) {
1289: while (<$fh>) {
1290: $loncronmail .= $_;
1291: }
1292: close($fh);
1293: } else {
1294: $loncronmail .= "Failed to read from http://$hostname/lon-status/index.html\n";
1295: }
1296: $loncronmail .= "\n\n";
1297: if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) {
1298: print $mailh $loncronmail;
1299: close($mailh);
1300: print "Sending mail.\n";
1301: } else {
1302: print "Sending mail failed.\n";
1303: }
1304: }
1305:
1306: sub usage {
1307: print(<<USAGE);
1308: loncron - housekeeping program that checks up on various parts of LON-CAPA
1309:
1310: Options:
1311: --help Display
1312: --noemail Do not send the status email
1313: --justcheckconnections Only check the current status of the lonc/d
1314: connections, do not send emails do not
1315: check if the daemons are running, do not
1316: generate lon-status
1317: --justcheckdaemons Only check that all of the Lon-CAPA daemons are
1318: running, do not send emails do not
1319: check the lonc/d connections, do not
1320: generate lon-status
1321: --justreload Only tell the daemons to reload the config files,
1322: do not send emails do not
1323: check if the daemons are running, do not
1324: generate lon-status
1325: --justiptables Only update the dynamic iptables rules for the
1326: lond port; do not send emails, do not
1327: check if the daemons are running, do not
1328: generate lon-status
1329: USAGE
1330: }
1331:
1332: # ================================================================ Main Program
1333: sub main () {
1334: my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
1335: $justreload,$justiptables);
1336: &GetOptions("help" => \$help,
1337: "justcheckdaemons" => \$justcheckdaemons,
1338: "noemail" => \$noemail,
1339: "justcheckconnections" => \$justcheckconnections,
1340: "justreload" => \$justreload,
1341: "justiptables" => \$justiptables
1342: );
1343: if ($help) { &usage(); return; }
1344: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
1345: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1346: %perlvar=%{$perlvarref};
1347: undef $perlvarref;
1348: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
1349: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1350: chdir($perlvar{'lonDaemons'});
1351: # --------------------------------------- Make sure that LON-CAPA is configured
1352: # I only test for one thing here (lonHostID). This is just a safeguard.
1353: if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
1354: print("Unconfigured machine.\n");
1355: my $emailto=$perlvar{'lonSysEMail'};
1356: my $hostname = Sys::Hostname::FQDN::fqdn();
1357: $hostname=~s/\.+/./g;
1358: $hostname=~s/\-+/-/g;
1359: $hostname=~s/[^\w\.-]//g; # make sure is safe to pass through shell
1360: my $subj="LON: Unconfigured machine $hostname";
1361: system("echo 'Unconfigured machine $hostname.' |".
1362: " mail -s '$subj' $emailto > /dev/null");
1363: exit 1;
1364: }
1365:
1366: # ----------------------------- Make sure this process is running from user=www
1367: my $wwwid=getpwnam('www');
1368: if ($wwwid!=$<) {
1369: print("User ID mismatch. This program must be run as user 'www'.\n");
1370: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
1371: my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
1372: system("echo 'User ID mismatch. loncron must be run as user www.' |".
1373: " mail -s '$subj' $emailto > /dev/null");
1374: exit 1;
1375: }
1376:
1377: # -------------------------------------------- Force reload of host information
1378: my $nomemcache;
1379: if ($justcheckdaemons) {
1380: $nomemcache=1;
1381: my $memcachepidfile="$perlvar{'lonDaemons'}/logs/memcached.pid";
1382: my $memcachepid;
1383: if (-e $memcachepidfile) {
1384: my $memfh=IO::File->new($memcachepidfile);
1385: $memcachepid=<$memfh>;
1386: chomp($memcachepid);
1387: if ($memcachepid =~ /^\d+$/ && kill 0 => $memcachepid) {
1388: undef($nomemcache);
1389: }
1390: }
1391: }
1392: if (!$justiptables) {
1393: &Apache::lonnet::load_hosts_tab(1,$nomemcache);
1394: &Apache::lonnet::load_domain_tab(1,$nomemcache);
1395: &Apache::lonnet::get_iphost(1,$nomemcache);
1396: }
1397:
1398: # ----------------------------------------- Force firewall update for lond port
1399:
1400: if ((!$justcheckdaemons) && (!$justreload)) {
1401: my $now = time;
1402: my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
1403: $now.$$.int(rand(10000));
1404: if (open(my $fh,">$tmpfile")) {
1405: my %iphosts = &Apache::lonnet::get_iphost();
1406: foreach my $key (keys(%iphosts)) {
1407: print $fh "$key\n";
1408: }
1409: close($fh);
1410: if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) {
1411: my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
1412: system("$execpath $tmpfile");
1413: unlink('/tmp/lock_lciptables'); # Remove the lock file.
1414: }
1415: unlink($tmpfile);
1416: }
1417: }
1418:
1419: # ---------------------------------------------------------------- Start report
1420:
1421: $errors=0;
1422: $warnings=0;
1423: $notices=0;
1424:
1425:
1426: my $fh;
1427: if (!$justcheckdaemons && !$justcheckconnections && !$justreload && !$justiptables) {
1428: $fh=&start_logging();
1429:
1430: &log_machine_info($fh);
1431: &clean_tmp($fh);
1432: &clean_lonIDs($fh);
1433: &clean_balanceIDs($fh);
1434: &clean_webDAV_sessionIDs($fh);
1435: &check_httpd_logs($fh);
1436: &rotate_lonnet_logs($fh);
1437: &rotate_other_logs($fh);
1438: }
1439: if (!$justcheckconnections && !$justreload && !$justiptables) {
1440: &checkon_daemon($fh,'lonmemcached',40000);
1441: &checkon_daemon($fh,'lonsql',200000);
1442: if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
1443: &checkon_daemon($fh,'lond',40000,'USR2');
1444: }
1445: &checkon_daemon($fh,'lonc',40000,'USR1');
1446: &checkon_daemon($fh,'lonmaxima',40000);
1447: &checkon_daemon($fh,'lonr',40000);
1448: }
1449: if ($justreload) {
1450: &checkon_daemon($fh,'lond',40000,'USR2');
1451: &checkon_daemon($fh,'lonc',40000,'USR2');
1452: }
1453: if ($justcheckconnections) {
1454: &test_connections($fh);
1455: }
1456: if (!$justcheckdaemons && !$justcheckconnections && !$justreload && !$justiptables) {
1457: my $domconf = &get_domain_config();
1458: my ($threshold,$sysmail,$reportstatus,$weightsref,$exclusionsref) =
1459: &get_permcount_settings($domconf);
1460: &check_delayed_msg($fh,$weightsref,$exclusionsref);
1461: &finish_logging($fh,$weightsref);
1462: &log_simplestatus();
1463: &write_loncaparevs();
1464: &write_serverhomeIDs();
1465: &write_checksums();
1466: &write_hostips();
1467: if ($totalcount>$threshold && !$noemail) { &send_mail($sysmail,$reportstatus); }
1468: }
1469: }
1470:
1471: &main();
1472: 1;
1473:
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