Annotation of loncom/loncron, revision 1.85

1.1       albertel    1: #!/usr/bin/perl
                      2: 
1.47      albertel    3: # Housekeeping program, started by cron, loncontrol and loncron.pl
                      4: #
1.85    ! raeburn     5: # $Id: loncron,v 1.84 2010/07/17 20:01:56 raeburn Exp $
1.47      albertel    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/
1.1       albertel   28: #
1.24      www        29: 
                     30: $|=1;
1.48      albertel   31: use strict;
1.1       albertel   32: 
1.26      harris41   33: use lib '/home/httpd/lib/perl/';
                     34: use LONCAPA::Configuration;
1.72      albertel   35: use Apache::lonnet;
1.79      raeburn    36: use Apache::loncommon;
1.26      harris41   37: 
1.1       albertel   38: use IO::File;
                     39: use IO::Socket;
1.48      albertel   40: use HTML::Entities;
1.49      albertel   41: use Getopt::Long;
1.46      albertel   42: #globals
                     43: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
                     44: 
                     45: my $statusdir="/home/httpd/html/lon-status";
                     46: 
1.1       albertel   47: 
                     48: # --------------------------------------------------------- Output error status
                     49: 
1.46      albertel   50: sub log {
                     51:     my $fh=shift;
                     52:     if ($fh) {	print $fh @_  }
                     53: }
                     54: 
1.1       albertel   55: sub errout {
                     56:    my $fh=shift;
1.46      albertel   57:    &log($fh,(<<ENDERROUT));
1.48      albertel   58:      <table border="2" bgcolor="#CCCCCC">
1.1       albertel   59:      <tr><td>Notices</td><td>$notices</td></tr>
                     60:      <tr><td>Warnings</td><td>$warnings</td></tr>
                     61:      <tr><td>Errors</td><td>$errors</td></tr>
1.48      albertel   62:      </table><p><a href="#top">Top</a></p>
1.1       albertel   63: ENDERROUT
                     64: }
                     65: 
1.73      albertel   66: sub rotate_logfile {
                     67:     my ($file,$fh,$description) = @_;
                     68:     my $size=(stat($file))[7];
                     69:     if ($size>40000) {
                     70: 	&log($fh,"<p>Rotating $description ...</p>");
                     71: 	rename("$file.2","$file.3");
                     72: 	rename("$file.1","$file.2");
                     73: 	rename("$file","$file.1");
                     74:     } 
                     75: }
                     76: 
1.42      albertel   77: sub start_daemon {
1.50      albertel   78:     my ($fh,$daemon,$pidfile,$args) = @_;
1.44      albertel   79:     my $progname=$daemon;
1.71      albertel   80:     if ($daemon eq 'lonc') {
1.44      albertel   81: 	$progname='loncnew'; 
                     82:     }
1.51      albertel   83:     my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
1.73      albertel   84:     &rotate_logfile($error_fname,$fh,'error logs');
1.74      albertel   85:     if ($daemon eq 'lonc') {
                     86: 	&clean_sockets($fh);
                     87:     }
1.51      albertel   88:     system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
1.60      albertel   89:     sleep 1;
1.42      albertel   90:     if (-e $pidfile) {
1.48      albertel   91: 	&log($fh,"<p>Seems like it started ...</p>");
1.42      albertel   92: 	my $lfh=IO::File->new("$pidfile");
                     93: 	my $daemonpid=<$lfh>;
                     94: 	chomp($daemonpid);
1.62      albertel   95: 	if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
1.42      albertel   96: 	    return 1;
                     97: 	} else {
                     98: 	    return 0;
                     99: 	}
                    100:     }
1.48      albertel  101:     &log($fh,"<p>Seems like that did not work!</p>");
1.42      albertel  102:     $errors++;
                    103:     return 0;
                    104: }
                    105: 
                    106: sub checkon_daemon {
1.59      albertel  107:     my ($fh,$daemon,$maxsize,$send,$args)=@_;
1.42      albertel  108: 
1.63      albertel  109:     my $result;
1.48      albertel  110:     &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
1.57      albertel  111:     printf("%-15s ",$daemon);
1.42      albertel  112:     if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
                    113: 	open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
1.46      albertel  114: 	while (my $line=<DFH>) { 
                    115: 	    &log($fh,"$line");
1.42      albertel  116: 	    if ($line=~/INFO/) { $notices++; }
                    117: 	    if ($line=~/WARNING/) { $notices++; }
                    118: 	    if ($line=~/CRITICAL/) { $warnings++; }
                    119: 	};
                    120: 	close (DFH);
                    121:     }
1.48      albertel  122:     &log($fh,"</tt></p>");
1.42      albertel  123:     
                    124:     my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
                    125:     
                    126:     my $restartflag=1;
1.46      albertel  127:     my $daemonpid;
1.42      albertel  128:     if (-e $pidfile) {
                    129: 	my $lfh=IO::File->new("$pidfile");
1.46      albertel  130: 	$daemonpid=<$lfh>;
1.42      albertel  131: 	chomp($daemonpid);
1.62      albertel  132: 	if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
1.46      albertel  133: 	    &log($fh,"<h3>$daemon at pid $daemonpid responding");
1.59      albertel  134: 	    if ($send) { &log($fh,", sending $send"); }
1.46      albertel  135: 	    &log($fh,"</h3>");
1.59      albertel  136: 	    if ($send eq 'USR1') { kill USR1 => $daemonpid; }
                    137: 	    if ($send eq 'USR2') { kill USR2 => $daemonpid; }
1.42      albertel  138: 	    $restartflag=0;
1.59      albertel  139: 	    if ($send eq 'USR2') {
1.63      albertel  140: 		$result = 'reloaded';
1.59      albertel  141: 		print "reloaded\n";
                    142: 	    } else {
1.63      albertel  143: 		$result = 'running';
1.59      albertel  144: 		print "running\n";
                    145: 	    }
1.42      albertel  146: 	} else {
                    147: 	    $errors++;
1.46      albertel  148: 	    &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.42      albertel  149: 	    $restartflag=1;
1.46      albertel  150: 	    &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
1.42      albertel  151: 	}
                    152:     }
                    153:     if ($restartflag==1) {
                    154: 	$simplestatus{$daemon}='off';
                    155: 	$errors++;
1.57      albertel  156: 	my $kadaemon=$daemon;
                    157: 	if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
1.46      albertel  158: 	&log($fh,'<br><font color="red">Killall '.$daemon.': '.
1.57      albertel  159: 	    `killall $kadaemon 2>&1`.' - ');
1.60      albertel  160: 	sleep 1;
1.46      albertel  161: 	&log($fh,unlink($pidfile).' - '.
1.57      albertel  162: 	    `killall -9 $kadaemon 2>&1`.
1.46      albertel  163: 	    '</font><br>');
                    164: 	&log($fh,"<h3>$daemon not running, trying to start</h3>");
1.42      albertel  165: 	
1.50      albertel  166: 	if (&start_daemon($fh,$daemon,$pidfile,$args)) {
1.46      albertel  167: 	    &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
1.42      albertel  168: 	    $simplestatus{$daemon}='restarted';
1.63      albertel  169: 	    $result = 'started';
1.42      albertel  170: 	    print "started\n";
                    171: 	} else {
                    172: 	    $errors++;
1.46      albertel  173: 	    &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.48      albertel  174: 	    &log($fh,"<p>Give it one more try ...</p>");
1.42      albertel  175: 	    print " ";
1.50      albertel  176: 	    if (&start_daemon($fh,$daemon,$pidfile,$args)) {
1.46      albertel  177: 		&log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
1.42      albertel  178: 		$simplestatus{$daemon}='restarted';
1.63      albertel  179: 		$result = 'started';
1.42      albertel  180: 		print "started\n";
                    181: 	    } else {
1.63      albertel  182: 		$result = 'failed';
1.42      albertel  183: 		print " failed\n";
                    184: 		$simplestatus{$daemon}='failed';
                    185: 		$errors++; $errors++;
1.46      albertel  186: 		&log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.48      albertel  187: 		&log($fh,"<p>Unable to start $daemon</p>");
1.42      albertel  188: 	    }
                    189: 	}
                    190: 
                    191: 	if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
1.46      albertel  192: 	    &log($fh,"<p><pre>");
1.42      albertel  193: 	    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|");
1.46      albertel  194: 	    while (my $line=<DFH>) { 
                    195: 		&log($fh,"$line");
1.42      albertel  196: 		if ($line=~/WARNING/) { $notices++; }
                    197: 		if ($line=~/CRITICAL/) { $notices++; }
                    198: 	    };
                    199: 	    close (DFH);
1.48      albertel  200: 	    &log($fh,"</pre></p>");
1.42      albertel  201: 	}
                    202:     }
                    203:     
1.46      albertel  204:     my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
1.73      albertel  205:     &rotate_logfile($fname,$fh,'logs');
1.42      albertel  206: 
                    207:     &errout($fh);
1.63      albertel  208:     return $result;
1.42      albertel  209: }
1.1       albertel  210: 
1.46      albertel  211: # --------------------------------------------------------------------- Machine
                    212: sub log_machine_info {
                    213:     my ($fh)=@_;
1.48      albertel  214:     &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
1.46      albertel  215:     &log($fh,"<h3>loadavg</h3>");
                    216: 	
                    217:     open (LOADAVGH,"/proc/loadavg");
                    218:     my $loadavg=<LOADAVGH>;
                    219:     close (LOADAVGH);
                    220:     
                    221:     &log($fh,"<tt>$loadavg</tt>");
                    222:     
                    223:     my @parts=split(/\s+/,$loadavg);
                    224:     if ($parts[1]>4.0) {
                    225: 	$errors++;
                    226:     } elsif ($parts[1]>2.0) {
                    227: 	$warnings++;
                    228:     } elsif ($parts[1]>1.0) {
                    229: 	$notices++;
                    230:     }
1.13      harris41  231: 
1.46      albertel  232:     &log($fh,"<h3>df</h3>");
                    233:     &log($fh,"<pre>");
1.14      harris41  234: 
1.46      albertel  235:     open (DFH,"df|");
                    236:     while (my $line=<DFH>) { 
1.48      albertel  237: 	&log($fh,&encode_entities($line,'<>&"')); 
1.46      albertel  238: 	@parts=split(/\s+/,$line);
                    239: 	my $usage=$parts[4];
                    240: 	$usage=~s/\W//g;
                    241: 	if ($usage>90) { 
                    242: 	    $warnings++;
                    243: 	    $notices++; 
                    244: 	} elsif ($usage>80) {
                    245: 	    $warnings++;
                    246: 	} elsif ($usage>60) {
                    247: 	    $notices++;
1.31      albertel  248: 	}
1.46      albertel  249: 	if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
1.1       albertel  250:     }
1.46      albertel  251:     close (DFH);
                    252:     &log($fh,"</pre>");
1.1       albertel  253: 
                    254: 
1.46      albertel  255:     &log($fh,"<h3>ps</h3>");
                    256:     &log($fh,"<pre>");
                    257:     my $psproc=0;
1.1       albertel  258: 
1.53      albertel  259:     open (PSH,"ps aux --cols 140 |");
1.46      albertel  260:     while (my $line=<PSH>) { 
1.48      albertel  261: 	&log($fh,&encode_entities($line,'<>&"')); 
1.46      albertel  262: 	$psproc++;
                    263:     }
                    264:     close (PSH);
                    265:     &log($fh,"</pre>");
1.1       albertel  266: 
1.46      albertel  267:     if ($psproc>200) { $notices++; }
                    268:     if ($psproc>250) { $notices++; }
1.1       albertel  269: 
1.61      albertel  270:     &log($fh,"<h3>distprobe</h3>");
                    271:     &log($fh,"<pre>");
                    272:     open(DSH,"$perlvar{'lonDaemons'}/distprobe |");
                    273:     while (my $line=<DSH>) { 
                    274: 	&log($fh,&encode_entities($line,'<>&"')); 
                    275: 	$psproc++;
                    276:     }
                    277:     close(DSH);
                    278:     &log($fh,"</pre>");
                    279: 
1.46      albertel  280:     &errout($fh);
                    281: }
1.1       albertel  282: 
1.46      albertel  283: sub start_logging {
1.43      albertel  284:     my $fh=IO::File->new(">$statusdir/newstatus.html");
                    285:     my %simplestatus=();
1.46      albertel  286:     my $now=time;
                    287:     my $date=localtime($now);
1.43      albertel  288:     
1.46      albertel  289: 
                    290:     &log($fh,(<<ENDHEADERS));
1.1       albertel  291: <html>
                    292: <head>
                    293: <title>LON Status Report $perlvar{'lonHostID'}</title>
                    294: </head>
1.3       www       295: <body bgcolor="#AAAAAA">
1.48      albertel  296: <a name="top" />
1.1       albertel  297: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
                    298: <h2>$date ($now)</h2>
                    299: <ol>
1.48      albertel  300: <li><a href="#configuration">Configuration</a></li>
                    301: <li><a href="#machine">Machine Information</a></li>
                    302: <li><a href="#tmp">Temporary Files</a></li>
                    303: <li><a href="#tokens">Session Tokens</a></li>
                    304: <li><a href="#httpd">httpd</a></li>
                    305: <li><a href="#lonsql">lonsql</a></li>
                    306: <li><a href="#lond">lond</a></li>
                    307: <li><a href="#lonc">lonc</a></li>
                    308: <li><a href="#lonnet">lonnet</a></li>
                    309: <li><a href="#connections">Connections</a></li>
                    310: <li><a href="#delayed">Delayed Messages</a></li>
                    311: <li><a href="#errcount">Error Count</a></li>
1.1       albertel  312: </ol>
1.48      albertel  313: <hr />
                    314: <a name="configuration" />
1.1       albertel  315: <h2>Configuration</h2>
                    316: <h3>PerlVars</h3>
1.48      albertel  317: <table border="2">
1.1       albertel  318: ENDHEADERS
                    319: 
1.46      albertel  320:     foreach my $varname (sort(keys(%perlvar))) {
1.48      albertel  321: 	&log($fh,"<tr><td>$varname</td><td>".
                    322: 	     &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
1.43      albertel  323:     }
1.48      albertel  324:     &log($fh,"</table><h3>Hosts</h3><table border='2'>");
1.72      albertel  325:     my %hostname = &Apache::lonnet::all_hostnames();
                    326:     foreach my $id (sort(keys(%hostname))) {
                    327: 	my $role = (&Apache::lonnet::is_library($id) ? 'library'
                    328: 		                                     : 'access');
1.46      albertel  329: 	&log($fh,
1.72      albertel  330: 	    "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
                    331: 	    "</td><td>".$role.
                    332: 	    "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
                    333:     }
                    334:     &log($fh,"</table><h3>Spare Hosts</h3><ul>");
                    335:     foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
                    336: 	&log($fh,"<li>$type\n<ol>");
                    337: 	foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
                    338: 	    &log($fh,"<li>$id</li>\n");
                    339: 	}
                    340: 	&log($fh,"</ol>\n</li>\n");
1.43      albertel  341:     }
1.72      albertel  342:     &log($fh,"</ul>\n");
1.46      albertel  343:     return $fh;
                    344: }
1.11      www       345: 
                    346: # --------------------------------------------------------------- clean out tmp
1.46      albertel  347: sub clean_tmp {
                    348:     my ($fh)=@_;
1.48      albertel  349:     &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
1.82      raeburn   350:     my ($cleaned,$old,$removed) = (0,0,0);
                    351:     my %errors = (
                    352:                      dir       => [],
                    353:                      file      => [],
                    354:                      failopen  => [],
                    355:                  );
                    356:     my %error_titles = (
                    357:                          dir       => 'failed to remove empty directory:',
                    358:                          file      => 'failed to unlike stale file',
                    359:                          failopen  => 'failed to open file or directory'
                    360:                        );
                    361:     ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
                    362:     &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
                    363:     foreach my $key (sort(keys(%errors))) {
                    364:         if (ref($errors{$key}) eq 'ARRAY') {
                    365:             if (@{$errors{$key}} > 0) {
                    366:                 &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
                    367:                      join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
                    368:             }
                    369:         }
                    370:     }
                    371: }
                    372: 
                    373: sub recursive_clean_tmp {
                    374:     my ($subdir,$cleaned,$old,$removed,$errors) = @_;
                    375:     my $base = "$perlvar{'lonDaemons'}/tmp";
                    376:     my $path = $base;
                    377:     next if ($subdir =~ m{\.\./});
                    378:     next unless (ref($errors) eq 'HASH');
                    379:     unless ($subdir eq '') {
                    380:         $path .= '/'.$subdir;
                    381:     }
                    382:     if (opendir(my $dh,"$path")) {
                    383:         while (my $file = readdir($dh)) {
                    384:             next if ($file =~ /^\.\.?$/);
                    385:             my $fname = "$path/$file";
                    386:             if (-d $fname) {
                    387:                 my $innerdir;
                    388:                 if ($subdir eq '') {
                    389:                     $innerdir = $file;
                    390:                 } else {
                    391:                     $innerdir = $subdir.'/'.$file;
                    392:                 }
                    393:                 ($cleaned,$old,$removed) = 
                    394:                      &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
                    395:                 my @doms = &Apache::lonnet::current_machine_domains();
                    396:                 
                    397:                 if (open(my $dirhandle,$fname)) {
                    398:                     unless (($innerdir eq 'helprequests') ||
                    399:                             (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
                    400:                         my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
                    401:                                       join('&&',@contents)."\n";    
                    402:                         if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
                    403:                             closedir($dirhandle);
                    404:                             if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
                    405:                                 if (rmdir($fname)) {
                    406:                                     $removed ++;
                    407:                                 } elsif (ref($errors->{dir}) eq 'ARRAY') {
                    408:                                     push(@{$errors->{dir}},$fname);
                    409:                                 }
                    410:                             }
                    411:                         }
                    412:                     } else {
                    413:                         closedir($dirhandle);
                    414:                     }
                    415:                 }
                    416:             } else {
                    417:                 my ($dev,$ino,$mode,$nlink,
                    418:                     $uid,$gid,$rdev,$size,
                    419:                     $atime,$mtime,$ctime,
                    420:                     $blksize,$blocks)=stat($fname);
                    421:                 my $now=time;
                    422:                 my $since=$now-$mtime;
                    423:                 if ($since>$perlvar{'lonExpire'}) {
                    424:                     if ($subdir eq '') {
                    425:                         my $line='';
                    426:                         if ($fname =~ /\.db$/) {
                    427:                             if (unlink($fname)) {
                    428:                                 $cleaned++;
                    429:                             } elsif (ref($errors->{file}) eq 'ARRAY') {
                    430:                                 push(@{$errors->{file}},$fname);
                    431:                             }
                    432:                         } elsif (open(PROBE,$fname)) {
                    433:                             my $line='';
                    434:                             $line=<PROBE>;
                    435:                             close(PROBE);
                    436:                             if ($line=~/^CHECKOUTTOKEN\&/) {
                    437:                                 if ($since>365*$perlvar{'lonExpire'}) {
                    438:                                     if (unlink($fname)) {
                    439:                                         $cleaned++; 
                    440:                                     } elsif (ref($errors->{file}) eq 'ARRAY') {
                    441:                                         push(@{$errors->{file}},$fname);
                    442:                                     }
                    443:                                 } else {
                    444:                                     $old++;
                    445:                                 }
                    446:                             } else {
                    447:                                 if (unlink($fname)) {
                    448:                                     $cleaned++;
                    449:                                 } elsif (ref($errors->{file}) eq 'ARRAY') {
                    450:                                     push(@{$errors->{file}},$fname);
                    451:                                 }
                    452:                             }
                    453:                         } elsif (ref($errors->{failopen}) eq 'ARRAY') {
                    454:                             push(@{$errors->{failopen}},$fname); 
                    455:                         }
                    456:                     } else {
                    457:                         if (unlink($fname)) {
                    458:                             $cleaned++;
                    459:                         } elsif (ref($errors->{file}) eq 'ARRAY') {
                    460:                             push(@{$errors->{file}},$fname);
                    461:                         }
                    462:                     }
                    463:                 }
                    464:             }
                    465:         }
                    466:         closedir($dh);
                    467:     } elsif (ref($errors->{failopen}) eq 'ARRAY') {
                    468:         push(@{$errors->{failopen}},$path);
1.43      albertel  469:     }
1.82      raeburn   470:     return ($cleaned,$old,$removed);
1.46      albertel  471: }
1.11      www       472: 
                    473: # ------------------------------------------------------------ clean out lonIDs
1.46      albertel  474: sub clean_lonIDs {
                    475:     my ($fh)=@_;
1.48      albertel  476:     &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
1.46      albertel  477:     my $cleaned=0;
                    478:     my $active=0;
                    479:     while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
1.43      albertel  480: 	my ($dev,$ino,$mode,$nlink,
                    481: 	    $uid,$gid,$rdev,$size,
                    482: 	    $atime,$mtime,$ctime,
                    483: 	    $blksize,$blocks)=stat($fname);
1.46      albertel  484: 	my $now=time;
                    485: 	my $since=$now-$mtime;
1.43      albertel  486: 	if ($since>$perlvar{'lonExpire'}) {
                    487: 	    $cleaned++;
1.46      albertel  488: 	    &log($fh,"Unlinking $fname<br>");
1.43      albertel  489: 	    unlink("$fname");
                    490: 	} else {
                    491: 	    $active++;
                    492: 	}
1.46      albertel  493:     }
1.48      albertel  494:     &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
1.46      albertel  495:     &log($fh,"<h3>$active open session(s)</h3>");
                    496: }
1.43      albertel  497: 
1.74      albertel  498: # ----------------------------------------------------------- clean out sockets
                    499: sub clean_sockets {
                    500:     my ($fh)=@_;
                    501:     my $cleaned=0;
                    502:     opendir(SOCKETS,$perlvar{'lonSockDir'});
                    503:     while (my $fname=readdir(SOCKETS)) {
                    504: 	next if (-d $fname 
1.80      www       505: 		 || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
1.74      albertel  506: 	$cleaned++;
                    507: 	&log($fh,"Unlinking $fname<br />");
                    508: 	unlink("/home/httpd/sockets/$fname");
                    509:     }
                    510:     &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
                    511: }
                    512: 
1.11      www       513: 
1.1       albertel  514: # ----------------------------------------------------------------------- httpd
1.46      albertel  515: sub check_httpd_logs {
                    516:     my ($fh)=@_;
1.48      albertel  517:     &log($fh,'<hr /><a name="httpd" /><h2>httpd</h2><h3>Access Log</h3><pre>');
1.43      albertel  518:     
                    519:     open (DFH,"tail -n25 /etc/httpd/logs/access_log|");
1.48      albertel  520:     while (my $line=<DFH>) { &log($fh,&encode_entities($line,'<>&"')) };
1.43      albertel  521:     close (DFH);
1.46      albertel  522: 	
                    523:     &log($fh,"</pre><h3>Error Log</h3><pre>");
                    524: 	
1.43      albertel  525:     open (DFH,"tail -n25 /etc/httpd/logs/error_log|");
1.46      albertel  526:     while (my $line=<DFH>) { 
                    527: 	&log($fh,"$line");
1.43      albertel  528: 	if ($line=~/\[error\]/) { $notices++; } 
1.46      albertel  529:     }
1.43      albertel  530:     close (DFH);
1.46      albertel  531:     &log($fh,"</pre>");
1.43      albertel  532:     &errout($fh);
1.46      albertel  533: }
1.1       albertel  534: 
                    535: # ---------------------------------------------------------------------- lonnet
                    536: 
1.48      albertel  537: sub rotate_lonnet_logs {
1.46      albertel  538:     my ($fh)=@_;
1.48      albertel  539:     &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
1.43      albertel  540:     print "checking logs\n";
                    541:     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
                    542: 	open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
1.46      albertel  543: 	while (my $line=<DFH>) { 
1.48      albertel  544: 	    &log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  545: 	}
1.43      albertel  546: 	close (DFH);
                    547:     }
1.46      albertel  548:     &log($fh,"</pre><h3>Perm Log</h3><pre>");
1.43      albertel  549:     
                    550:     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
                    551: 	open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
1.46      albertel  552: 	while (my $line=<DFH>) { 
1.48      albertel  553: 	    &log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  554: 	}
1.43      albertel  555: 	close (DFH);
1.46      albertel  556:     } else { &log($fh,"No perm log\n") }
1.43      albertel  557: 
1.46      albertel  558:     my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
1.73      albertel  559:     &rotate_logfile($fname,$fh,'lonnet log');
1.1       albertel  560: 
1.46      albertel  561:     &log($fh,"</pre>");
1.43      albertel  562:     &errout($fh);
1.46      albertel  563: }
                    564: 
1.73      albertel  565: sub rotate_other_logs {
                    566:     my ($fh) = @_;
1.83      raeburn   567:     my %logs = (
                    568:                   autoenroll          => 'Auto Enroll log',
                    569:                   autocreate          => 'Create Course log',
                    570:                   searchcat           => 'Search Cataloguing log',
                    571:                   autoupdate          => 'Auto Update log',
                    572:                   refreshcourseids_db => 'Refresh CourseIDs db log',
                    573:                );
                    574:     foreach my $item (keys(%logs)) {
                    575:         my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
                    576:         &rotate_logfile($fname,$fh,$logs{$item});
                    577:     }
1.73      albertel  578: }
                    579: 
1.43      albertel  580: # ----------------------------------------------------------------- Connections
1.46      albertel  581: sub test_connections {
1.72      albertel  582:     my ($fh)=@_;
1.48      albertel  583:     &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
1.43      albertel  584:     print "testing connections\n";
1.48      albertel  585:     &log($fh,"<table border='2'>");
1.49      albertel  586:     my ($good,$bad)=(0,0);
1.72      albertel  587:     my %hostname = &Apache::lonnet::all_hostnames();
                    588:     foreach my $tryserver (sort(keys(%hostname))) {
1.43      albertel  589: 	print(".");
1.46      albertel  590: 	my $result;
1.72      albertel  591: 	my $answer=&Apache::lonnet::reply("ping",$tryserver);
1.43      albertel  592: 	if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
                    593: 	    $result="<b>ok</b>";
1.49      albertel  594: 	    $good++;
1.43      albertel  595: 	} else {
                    596: 	    $result=$answer;
                    597: 	    $warnings++;
1.49      albertel  598: 	    if ($answer eq 'con_lost') {
                    599: 		$bad++;
                    600: 		$warnings++;
1.50      albertel  601: 	    } else {
                    602: 		$good++; #self connection
1.49      albertel  603: 	    }
1.43      albertel  604: 	}
                    605: 	if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
1.46      albertel  606: 	&log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
1.1       albertel  607:     }
1.46      albertel  608:     &log($fh,"</table>");
1.49      albertel  609:     print "\n$good good, $bad bad connections\n";
1.43      albertel  610:     &errout($fh);
1.46      albertel  611: }
                    612: 
                    613: 
1.1       albertel  614: # ------------------------------------------------------------ Delayed messages
1.46      albertel  615: sub check_delayed_msg {
1.72      albertel  616:     my ($fh)=@_;
1.48      albertel  617:     &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
1.43      albertel  618:     print "checking buffers\n";
1.46      albertel  619:     
                    620:     &log($fh,'<h3>Scanning Permanent Log</h3>');
1.1       albertel  621: 
1.46      albertel  622:     my $unsend=0;
1.1       albertel  623: 
1.46      albertel  624:     my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log");
                    625:     while (my $line=<$dfh>) {
                    626: 	my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line);
                    627: 	if ($sdf eq 'F') { 
                    628: 	    my $local=localtime($time);
                    629: 	    &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br>");
                    630: 	    $warnings++;
1.43      albertel  631: 	}
1.46      albertel  632: 	if ($sdf eq 'S') { $unsend--; }
                    633: 	if ($sdf eq 'D') { $unsend++; }
1.1       albertel  634:     }
1.46      albertel  635: 
1.48      albertel  636:     &log($fh,"<p>Total unsend messages: <b>$unsend</b></p>\n");
1.43      albertel  637:     $warnings=$warnings+5*$unsend;
1.1       albertel  638: 
1.43      albertel  639:     if ($unsend) { $simplestatus{'unsend'}=$unsend; }
1.48      albertel  640:     &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
1.68      www       641: # list directory with delayed messages and remember offline servers
                    642:     my %servers=();
1.43      albertel  643:     open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
1.68      www       644:     while (my $line=<DFH>) {
                    645:         my ($server)=($line=~/\.(\w+)$/);
                    646:         if ($server) { $servers{$server}=1; }
1.48      albertel  647: 	&log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  648:     }
1.48      albertel  649:     &log($fh,"</pre>\n");
1.43      albertel  650:     close (DFH);
1.68      www       651: # pong to all servers that have delayed messages
                    652: # this will trigger a reverse connection, which should flush the buffers
                    653:     foreach my $tryserver (keys %servers) {
1.72      albertel  654: 	my $answer=&Apache::lonnet::reply("pong",$tryserver);
1.69      www       655: 	&log($fh,"Pong to $tryserver: $answer<br />");
1.68      www       656:     }
1.46      albertel  657: }
1.1       albertel  658: 
1.46      albertel  659: sub finish_logging {
                    660:     my ($fh)=@_;
1.48      albertel  661:     &log($fh,"<a name='errcount' />\n");
1.43      albertel  662:     $totalcount=$notices+4*$warnings+100*$errors;
                    663:     &errout($fh);
1.46      albertel  664:     &log($fh,"<h1>Total Error Count: $totalcount</h1>");
                    665:     my $now=time;
                    666:     my $date=localtime($now);
1.48      albertel  667:     &log($fh,"<hr />$date ($now)</body></html>\n");
1.43      albertel  668:     print "lon-status webpage updated\n";
                    669:     $fh->close();
1.46      albertel  670: 
                    671:     if ($errors) { $simplestatus{'errors'}=$errors; }
                    672:     if ($warnings) { $simplestatus{'warnings'}=$warnings; }
                    673:     if ($notices) { $simplestatus{'notices'}=$notices; }
                    674:     $simplestatus{'time'}=time;
1.1       albertel  675: }
                    676: 
1.46      albertel  677: sub log_simplestatus {
1.73      albertel  678:     rename("$statusdir/newstatus.html","$statusdir/index.html");
1.46      albertel  679:     
1.43      albertel  680:     my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
                    681:     foreach (keys %simplestatus) {
                    682: 	print $sfh $_.'='.$simplestatus{$_}.'&';
                    683:     }
                    684:     print $sfh "\n";
                    685:     $sfh->close();
1.41      www       686: }
1.46      albertel  687: 
1.84      raeburn   688: sub write_loncaparevs {
                    689:     if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
                    690:         my %hostname = &Apache::lonnet::all_hostnames();
                    691:         foreach my $id (sort(keys(%hostname))) {
                    692:             if ($id ne '') {
                    693:                 my $loncaparev = &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
                    694:                 if ($loncaparev =~ /^[\d.\-]+$/) {
                    695:                     print $fh $id.':'.$loncaparev."\n";
                    696:                 }
                    697:             }
                    698:         }
                    699:         close($fh);
                    700:     }
                    701:     return;
                    702: }
                    703: 
1.85    ! raeburn   704: sub write_serverhomeIDs {
        !           705:     if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
        !           706:         my %name_to_host = &Apache::lonnet::all_names();
        !           707:         foreach my $name (sort(keys(%name_to_host))) {
        !           708:             if ($name ne '') {
        !           709:                 if (ref($name_to_host{$name}) eq 'ARRAY') {
        !           710:                     my $serverhomeID = &Apache::lonnet::get_server_homeID($name,1,'loncron');
        !           711:                     if ($serverhomeID ne '') {
        !           712:                         print $fh $name.':'.$serverhomeID."\n";
        !           713:                     } else {
        !           714:                         print $fh $name.':'.$name_to_host{$name}->[0]."\n";
        !           715:                     }
        !           716:                 }
        !           717:             }
        !           718:         }
        !           719:         close($fh);
        !           720:     }
        !           721:     return;
        !           722: }
        !           723: 
1.46      albertel  724: sub send_mail {
1.43      albertel  725:     print "sending mail\n";
1.79      raeburn   726:     my $defdom = $perlvar{'lonDefDomain'};
                    727:     my $origmail = $perlvar{'lonAdmEMail'};
1.78      raeburn   728:     my $emailto = &Apache::loncommon::build_recipient_list(undef,
                    729:                                    'lonstatusmail',$defdom,$origmail);
1.54      www       730:     if ($totalcount>2500) {
1.43      albertel  731: 	$emailto.=",$perlvar{'lonSysEMail'}";
                    732:     }
1.46      albertel  733:     my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; 
1.52      albertel  734: 
1.58      albertel  735:     my $result=system("metasend -b -S 4000000 -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
1.52      albertel  736:     if ($result != 0) {
                    737: 	$result=system("mail -s '$subj' $emailto < $statusdir/index.html");
                    738:     }
1.1       albertel  739: }
1.46      albertel  740: 
1.49      albertel  741: sub usage {
                    742:     print(<<USAGE);
                    743: loncron - housekeeping program that checks up on various parts of Lon-CAPA
                    744: 
                    745: Options:
1.71      albertel  746:    --help     Display 
1.49      albertel  747:    --noemail  Do not send the status email
                    748:    --justcheckconnections  Only check the current status of the lonc/d
                    749:                                 connections, do not send emails do not
                    750:                                 check if the daemons are running, do not
                    751:                                 generate lon-status
                    752:    --justcheckdaemons      Only check that all of the Lon-CAPA daemons are
                    753:                                 running, do not send emails do not
                    754:                                 check the lonc/d connections, do not
                    755:                                 generate lon-status
1.59      albertel  756:    --justreload            Only tell the daemons to reload the config files,
                    757: 				do not send emails do not
                    758:                                 check if the daemons are running, do not
                    759:                                 generate lon-status
1.49      albertel  760:                            
                    761: USAGE
                    762: }
                    763: 
1.46      albertel  764: # ================================================================ Main Program
                    765: sub main () {
1.71      albertel  766:     my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
1.59      albertel  767: 	$justreload);
1.49      albertel  768:     &GetOptions("help"                 => \$help,
                    769: 		"justcheckdaemons"     => \$justcheckdaemons,
                    770: 		"noemail"              => \$noemail,
1.59      albertel  771: 		"justcheckconnections" => \$justcheckconnections,
                    772: 		"justreload"           => \$justreload
1.49      albertel  773: 		);
                    774:     if ($help) { &usage(); return; }
1.46      albertel  775: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
                    776:     my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
                    777:     %perlvar=%{$perlvarref};
                    778:     undef $perlvarref;
                    779:     delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
                    780:     delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1.75      albertel  781:     chdir($perlvar{'lonDaemons'});
1.46      albertel  782: # --------------------------------------- Make sure that LON-CAPA is configured
                    783: # I only test for one thing here (lonHostID).  This is just a safeguard.
                    784:     if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
                    785: 	print("Unconfigured machine.\n");
                    786: 	my $emailto=$perlvar{'lonSysEMail'};
                    787: 	my $hostname=`/bin/hostname`;
                    788: 	chop $hostname;
                    789: 	$hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell
                    790: 	my $subj="LON: Unconfigured machine $hostname";
                    791: 	system("echo 'Unconfigured machine $hostname.' |\
                    792:  mailto $emailto -s '$subj' > /dev/null");
                    793: 	exit 1;
                    794:     }
                    795: 
                    796: # ----------------------------- Make sure this process is running from user=www
                    797:     my $wwwid=getpwnam('www');
                    798:     if ($wwwid!=$<) {
                    799: 	print("User ID mismatch.  This program must be run as user 'www'\n");
                    800: 	my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
                    801: 	my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
                    802: 	system("echo 'User ID mismatch.  loncron must be run as user www.' |\
                    803:  mailto $emailto -s '$subj' > /dev/null");
                    804: 	exit 1;
                    805:     }
                    806: 
1.72      albertel  807: # -------------------------------------------- Force reload of host information
                    808:     &Apache::lonnet::load_hosts_tab(1);
                    809:     &Apache::lonnet::load_domain_tab(1);
                    810:     &Apache::lonnet::get_iphost(1);
1.46      albertel  811: 
1.81      raeburn   812: # ----------------------------------------- Force firewall update for lond port  
                    813: 
                    814:     if ((!$justcheckdaemons) && (!$justreload)) {
                    815:         my $now = time;
                    816:         my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
                    817:                       $now.$$.int(rand(10000));
                    818:         if (open(my $fh,">$tmpfile")) {
                    819:             my %iphosts = &Apache::lonnet::get_iphost();
                    820:             foreach my $key (keys(%iphosts)) {
                    821:                 print $fh "$key\n";
                    822:             }
                    823:             close($fh);
                    824:             my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
                    825:             system("$execpath $tmpfile");
                    826:             unlink($fh);
                    827:         }
                    828:     }
                    829: 
1.46      albertel  830: # ---------------------------------------------------------------- Start report
                    831: 
                    832:     $errors=0;
                    833:     $warnings=0;
                    834:     $notices=0;
                    835: 
                    836: 	
1.49      albertel  837:     my $fh;
1.59      albertel  838:     if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1.72      albertel  839: 	$fh=&start_logging();
1.49      albertel  840: 
                    841: 	&log_machine_info($fh);
                    842: 	&clean_tmp($fh);
                    843: 	&clean_lonIDs($fh);
                    844: 	&check_httpd_logs($fh);
                    845: 	&rotate_lonnet_logs($fh);
1.73      albertel  846: 	&rotate_other_logs($fh);
1.49      albertel  847:     }
1.59      albertel  848:     if (!$justcheckconnections && !$justreload) {
1.76      albertel  849: 	&checkon_daemon($fh,'lonmemcached',40000);
1.49      albertel  850: 	&checkon_daemon($fh,'lonsql',200000);
1.63      albertel  851: 	if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
                    852: 	    &checkon_daemon($fh,'lond',40000,'USR2');
                    853: 	}
1.71      albertel  854: 	&checkon_daemon($fh,'lonc',40000,'USR1');
1.70      raeburn   855:         &checkon_daemon($fh,'lonmaxima',40000);
1.80      www       856:         &checkon_daemon($fh,'lonr',40000);
1.49      albertel  857:     }
1.59      albertel  858:     if ($justreload) {
                    859: 	&checkon_daemon($fh,'lond',40000,'USR2');
1.71      albertel  860: 	&checkon_daemon($fh,'lonc',40000,'USR2');
1.59      albertel  861:     }
1.63      albertel  862:     if ($justcheckconnections) {
1.72      albertel  863: 	&test_connections($fh);
1.49      albertel  864:     }
1.59      albertel  865:     if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1.72      albertel  866: 	&check_delayed_msg($fh);
1.49      albertel  867: 	&finish_logging($fh);
                    868: 	&log_simplestatus();
                    869: 	
                    870: 	if ($totalcount>200 && !$noemail) { &send_mail(); }
                    871:     }
1.84      raeburn   872:     if (!$justcheckconnections && !$justreload) {
                    873:         &write_loncaparevs();
1.85    ! raeburn   874:         &write_serverhomeIDs();
1.84      raeburn   875:     }
1.46      albertel  876: }
                    877: 
                    878: &main();
1.1       albertel  879: 1;
                    880: 
                    881: 
                    882: 
                    883: 
                    884: 
                    885: 
                    886: 
                    887: 

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