Annotation of loncom/loncron, revision 1.90

1.1       albertel    1: #!/usr/bin/perl
                      2: 
1.47      albertel    3: # Housekeeping program, started by cron, loncontrol and loncron.pl
                      4: #
1.90    ! raeburn     5: # $Id: loncron,v 1.89 2011/05/14 16:12:53 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;
1.89      raeburn    35: use LONCAPA;
1.72      albertel   36: use Apache::lonnet;
1.79      raeburn    37: use Apache::loncommon;
1.26      harris41   38: 
1.1       albertel   39: use IO::File;
                     40: use IO::Socket;
1.48      albertel   41: use HTML::Entities;
1.49      albertel   42: use Getopt::Long;
1.46      albertel   43: #globals
                     44: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
                     45: 
                     46: my $statusdir="/home/httpd/html/lon-status";
                     47: 
1.1       albertel   48: 
                     49: # --------------------------------------------------------- Output error status
                     50: 
1.46      albertel   51: sub log {
                     52:     my $fh=shift;
                     53:     if ($fh) {	print $fh @_  }
                     54: }
                     55: 
1.1       albertel   56: sub errout {
                     57:    my $fh=shift;
1.46      albertel   58:    &log($fh,(<<ENDERROUT));
1.48      albertel   59:      <table border="2" bgcolor="#CCCCCC">
1.1       albertel   60:      <tr><td>Notices</td><td>$notices</td></tr>
                     61:      <tr><td>Warnings</td><td>$warnings</td></tr>
                     62:      <tr><td>Errors</td><td>$errors</td></tr>
1.48      albertel   63:      </table><p><a href="#top">Top</a></p>
1.1       albertel   64: ENDERROUT
                     65: }
                     66: 
1.73      albertel   67: sub rotate_logfile {
                     68:     my ($file,$fh,$description) = @_;
                     69:     my $size=(stat($file))[7];
                     70:     if ($size>40000) {
                     71: 	&log($fh,"<p>Rotating $description ...</p>");
                     72: 	rename("$file.2","$file.3");
                     73: 	rename("$file.1","$file.2");
                     74: 	rename("$file","$file.1");
                     75:     } 
                     76: }
                     77: 
1.42      albertel   78: sub start_daemon {
1.50      albertel   79:     my ($fh,$daemon,$pidfile,$args) = @_;
1.44      albertel   80:     my $progname=$daemon;
1.71      albertel   81:     if ($daemon eq 'lonc') {
1.44      albertel   82: 	$progname='loncnew'; 
                     83:     }
1.51      albertel   84:     my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
1.73      albertel   85:     &rotate_logfile($error_fname,$fh,'error logs');
1.74      albertel   86:     if ($daemon eq 'lonc') {
                     87: 	&clean_sockets($fh);
                     88:     }
1.51      albertel   89:     system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
1.60      albertel   90:     sleep 1;
1.42      albertel   91:     if (-e $pidfile) {
1.48      albertel   92: 	&log($fh,"<p>Seems like it started ...</p>");
1.42      albertel   93: 	my $lfh=IO::File->new("$pidfile");
                     94: 	my $daemonpid=<$lfh>;
                     95: 	chomp($daemonpid);
1.62      albertel   96: 	if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
1.42      albertel   97: 	    return 1;
                     98: 	} else {
                     99: 	    return 0;
                    100: 	}
                    101:     }
1.48      albertel  102:     &log($fh,"<p>Seems like that did not work!</p>");
1.42      albertel  103:     $errors++;
                    104:     return 0;
                    105: }
                    106: 
                    107: sub checkon_daemon {
1.59      albertel  108:     my ($fh,$daemon,$maxsize,$send,$args)=@_;
1.42      albertel  109: 
1.63      albertel  110:     my $result;
1.48      albertel  111:     &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
1.57      albertel  112:     printf("%-15s ",$daemon);
1.42      albertel  113:     if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
                    114: 	open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
1.46      albertel  115: 	while (my $line=<DFH>) { 
                    116: 	    &log($fh,"$line");
1.42      albertel  117: 	    if ($line=~/INFO/) { $notices++; }
                    118: 	    if ($line=~/WARNING/) { $notices++; }
                    119: 	    if ($line=~/CRITICAL/) { $warnings++; }
                    120: 	};
                    121: 	close (DFH);
                    122:     }
1.48      albertel  123:     &log($fh,"</tt></p>");
1.42      albertel  124:     
                    125:     my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
                    126:     
                    127:     my $restartflag=1;
1.46      albertel  128:     my $daemonpid;
1.42      albertel  129:     if (-e $pidfile) {
                    130: 	my $lfh=IO::File->new("$pidfile");
1.46      albertel  131: 	$daemonpid=<$lfh>;
1.42      albertel  132: 	chomp($daemonpid);
1.62      albertel  133: 	if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
1.46      albertel  134: 	    &log($fh,"<h3>$daemon at pid $daemonpid responding");
1.59      albertel  135: 	    if ($send) { &log($fh,", sending $send"); }
1.46      albertel  136: 	    &log($fh,"</h3>");
1.59      albertel  137: 	    if ($send eq 'USR1') { kill USR1 => $daemonpid; }
                    138: 	    if ($send eq 'USR2') { kill USR2 => $daemonpid; }
1.42      albertel  139: 	    $restartflag=0;
1.59      albertel  140: 	    if ($send eq 'USR2') {
1.63      albertel  141: 		$result = 'reloaded';
1.59      albertel  142: 		print "reloaded\n";
                    143: 	    } else {
1.63      albertel  144: 		$result = 'running';
1.59      albertel  145: 		print "running\n";
                    146: 	    }
1.42      albertel  147: 	} else {
                    148: 	    $errors++;
1.46      albertel  149: 	    &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.42      albertel  150: 	    $restartflag=1;
1.46      albertel  151: 	    &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
1.42      albertel  152: 	}
                    153:     }
                    154:     if ($restartflag==1) {
                    155: 	$simplestatus{$daemon}='off';
                    156: 	$errors++;
1.57      albertel  157: 	my $kadaemon=$daemon;
                    158: 	if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
1.46      albertel  159: 	&log($fh,'<br><font color="red">Killall '.$daemon.': '.
1.57      albertel  160: 	    `killall $kadaemon 2>&1`.' - ');
1.60      albertel  161: 	sleep 1;
1.46      albertel  162: 	&log($fh,unlink($pidfile).' - '.
1.57      albertel  163: 	    `killall -9 $kadaemon 2>&1`.
1.46      albertel  164: 	    '</font><br>');
                    165: 	&log($fh,"<h3>$daemon not running, trying to start</h3>");
1.42      albertel  166: 	
1.50      albertel  167: 	if (&start_daemon($fh,$daemon,$pidfile,$args)) {
1.46      albertel  168: 	    &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
1.42      albertel  169: 	    $simplestatus{$daemon}='restarted';
1.63      albertel  170: 	    $result = 'started';
1.42      albertel  171: 	    print "started\n";
                    172: 	} else {
                    173: 	    $errors++;
1.46      albertel  174: 	    &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.48      albertel  175: 	    &log($fh,"<p>Give it one more try ...</p>");
1.42      albertel  176: 	    print " ";
1.50      albertel  177: 	    if (&start_daemon($fh,$daemon,$pidfile,$args)) {
1.46      albertel  178: 		&log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
1.42      albertel  179: 		$simplestatus{$daemon}='restarted';
1.63      albertel  180: 		$result = 'started';
1.42      albertel  181: 		print "started\n";
                    182: 	    } else {
1.63      albertel  183: 		$result = 'failed';
1.42      albertel  184: 		print " failed\n";
                    185: 		$simplestatus{$daemon}='failed';
                    186: 		$errors++; $errors++;
1.46      albertel  187: 		&log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.48      albertel  188: 		&log($fh,"<p>Unable to start $daemon</p>");
1.42      albertel  189: 	    }
                    190: 	}
                    191: 
                    192: 	if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
1.46      albertel  193: 	    &log($fh,"<p><pre>");
1.42      albertel  194: 	    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|");
1.46      albertel  195: 	    while (my $line=<DFH>) { 
                    196: 		&log($fh,"$line");
1.42      albertel  197: 		if ($line=~/WARNING/) { $notices++; }
                    198: 		if ($line=~/CRITICAL/) { $notices++; }
                    199: 	    };
                    200: 	    close (DFH);
1.48      albertel  201: 	    &log($fh,"</pre></p>");
1.42      albertel  202: 	}
                    203:     }
                    204:     
1.46      albertel  205:     my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
1.73      albertel  206:     &rotate_logfile($fname,$fh,'logs');
1.42      albertel  207: 
                    208:     &errout($fh);
1.63      albertel  209:     return $result;
1.42      albertel  210: }
1.1       albertel  211: 
1.46      albertel  212: # --------------------------------------------------------------------- Machine
                    213: sub log_machine_info {
                    214:     my ($fh)=@_;
1.48      albertel  215:     &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
1.46      albertel  216:     &log($fh,"<h3>loadavg</h3>");
                    217: 	
                    218:     open (LOADAVGH,"/proc/loadavg");
                    219:     my $loadavg=<LOADAVGH>;
                    220:     close (LOADAVGH);
                    221:     
                    222:     &log($fh,"<tt>$loadavg</tt>");
                    223:     
                    224:     my @parts=split(/\s+/,$loadavg);
                    225:     if ($parts[1]>4.0) {
                    226: 	$errors++;
                    227:     } elsif ($parts[1]>2.0) {
                    228: 	$warnings++;
                    229:     } elsif ($parts[1]>1.0) {
                    230: 	$notices++;
                    231:     }
1.13      harris41  232: 
1.46      albertel  233:     &log($fh,"<h3>df</h3>");
                    234:     &log($fh,"<pre>");
1.14      harris41  235: 
1.46      albertel  236:     open (DFH,"df|");
                    237:     while (my $line=<DFH>) { 
1.48      albertel  238: 	&log($fh,&encode_entities($line,'<>&"')); 
1.46      albertel  239: 	@parts=split(/\s+/,$line);
                    240: 	my $usage=$parts[4];
                    241: 	$usage=~s/\W//g;
                    242: 	if ($usage>90) { 
                    243: 	    $warnings++;
                    244: 	    $notices++; 
                    245: 	} elsif ($usage>80) {
                    246: 	    $warnings++;
                    247: 	} elsif ($usage>60) {
                    248: 	    $notices++;
1.31      albertel  249: 	}
1.46      albertel  250: 	if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
1.1       albertel  251:     }
1.46      albertel  252:     close (DFH);
                    253:     &log($fh,"</pre>");
1.1       albertel  254: 
                    255: 
1.46      albertel  256:     &log($fh,"<h3>ps</h3>");
                    257:     &log($fh,"<pre>");
                    258:     my $psproc=0;
1.1       albertel  259: 
1.53      albertel  260:     open (PSH,"ps aux --cols 140 |");
1.46      albertel  261:     while (my $line=<PSH>) { 
1.48      albertel  262: 	&log($fh,&encode_entities($line,'<>&"')); 
1.46      albertel  263: 	$psproc++;
                    264:     }
                    265:     close (PSH);
                    266:     &log($fh,"</pre>");
1.1       albertel  267: 
1.46      albertel  268:     if ($psproc>200) { $notices++; }
                    269:     if ($psproc>250) { $notices++; }
1.1       albertel  270: 
1.61      albertel  271:     &log($fh,"<h3>distprobe</h3>");
                    272:     &log($fh,"<pre>");
                    273:     open(DSH,"$perlvar{'lonDaemons'}/distprobe |");
                    274:     while (my $line=<DSH>) { 
                    275: 	&log($fh,&encode_entities($line,'<>&"')); 
                    276: 	$psproc++;
                    277:     }
                    278:     close(DSH);
                    279:     &log($fh,"</pre>");
                    280: 
1.46      albertel  281:     &errout($fh);
                    282: }
1.1       albertel  283: 
1.46      albertel  284: sub start_logging {
1.43      albertel  285:     my $fh=IO::File->new(">$statusdir/newstatus.html");
                    286:     my %simplestatus=();
1.46      albertel  287:     my $now=time;
                    288:     my $date=localtime($now);
1.43      albertel  289:     
1.46      albertel  290: 
                    291:     &log($fh,(<<ENDHEADERS));
1.1       albertel  292: <html>
                    293: <head>
                    294: <title>LON Status Report $perlvar{'lonHostID'}</title>
                    295: </head>
1.3       www       296: <body bgcolor="#AAAAAA">
1.48      albertel  297: <a name="top" />
1.1       albertel  298: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
                    299: <h2>$date ($now)</h2>
                    300: <ol>
1.48      albertel  301: <li><a href="#configuration">Configuration</a></li>
                    302: <li><a href="#machine">Machine Information</a></li>
                    303: <li><a href="#tmp">Temporary Files</a></li>
                    304: <li><a href="#tokens">Session Tokens</a></li>
                    305: <li><a href="#httpd">httpd</a></li>
                    306: <li><a href="#lonsql">lonsql</a></li>
                    307: <li><a href="#lond">lond</a></li>
                    308: <li><a href="#lonc">lonc</a></li>
                    309: <li><a href="#lonnet">lonnet</a></li>
                    310: <li><a href="#connections">Connections</a></li>
                    311: <li><a href="#delayed">Delayed Messages</a></li>
                    312: <li><a href="#errcount">Error Count</a></li>
1.1       albertel  313: </ol>
1.48      albertel  314: <hr />
                    315: <a name="configuration" />
1.1       albertel  316: <h2>Configuration</h2>
                    317: <h3>PerlVars</h3>
1.48      albertel  318: <table border="2">
1.1       albertel  319: ENDHEADERS
                    320: 
1.46      albertel  321:     foreach my $varname (sort(keys(%perlvar))) {
1.48      albertel  322: 	&log($fh,"<tr><td>$varname</td><td>".
                    323: 	     &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
1.43      albertel  324:     }
1.48      albertel  325:     &log($fh,"</table><h3>Hosts</h3><table border='2'>");
1.72      albertel  326:     my %hostname = &Apache::lonnet::all_hostnames();
                    327:     foreach my $id (sort(keys(%hostname))) {
                    328: 	my $role = (&Apache::lonnet::is_library($id) ? 'library'
                    329: 		                                     : 'access');
1.46      albertel  330: 	&log($fh,
1.72      albertel  331: 	    "<tr><td>$id</td><td>".&Apache::lonnet::host_domain($id).
                    332: 	    "</td><td>".$role.
                    333: 	    "</td><td>".&Apache::lonnet::hostname($id)."</td></tr>\n");
                    334:     }
                    335:     &log($fh,"</table><h3>Spare Hosts</h3><ul>");
                    336:     foreach my $type (sort(keys(%Apache::lonnet::spareid))) {
                    337: 	&log($fh,"<li>$type\n<ol>");
                    338: 	foreach my $id (@{ $Apache::lonnet::spareid{$type} }) {
                    339: 	    &log($fh,"<li>$id</li>\n");
                    340: 	}
                    341: 	&log($fh,"</ol>\n</li>\n");
1.43      albertel  342:     }
1.72      albertel  343:     &log($fh,"</ul>\n");
1.46      albertel  344:     return $fh;
                    345: }
1.11      www       346: 
                    347: # --------------------------------------------------------------- clean out tmp
1.46      albertel  348: sub clean_tmp {
                    349:     my ($fh)=@_;
1.48      albertel  350:     &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
1.82      raeburn   351:     my ($cleaned,$old,$removed) = (0,0,0);
                    352:     my %errors = (
                    353:                      dir       => [],
                    354:                      file      => [],
                    355:                      failopen  => [],
                    356:                  );
                    357:     my %error_titles = (
                    358:                          dir       => 'failed to remove empty directory:',
                    359:                          file      => 'failed to unlike stale file',
                    360:                          failopen  => 'failed to open file or directory'
                    361:                        );
                    362:     ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors);
                    363:     &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)");
                    364:     foreach my $key (sort(keys(%errors))) {
                    365:         if (ref($errors{$key}) eq 'ARRAY') {
                    366:             if (@{$errors{$key}} > 0) {
                    367:                 &log($fh,"Error during cleanup ($error_titles{$key}):<ul><li>".
                    368:                      join('</li><li><tt>',@{$errors{$key}}).'</tt></li></ul><br />');
                    369:             }
                    370:         }
                    371:     }
                    372: }
                    373: 
                    374: sub recursive_clean_tmp {
                    375:     my ($subdir,$cleaned,$old,$removed,$errors) = @_;
                    376:     my $base = "$perlvar{'lonDaemons'}/tmp";
                    377:     my $path = $base;
                    378:     next if ($subdir =~ m{\.\./});
                    379:     next unless (ref($errors) eq 'HASH');
                    380:     unless ($subdir eq '') {
                    381:         $path .= '/'.$subdir;
                    382:     }
                    383:     if (opendir(my $dh,"$path")) {
                    384:         while (my $file = readdir($dh)) {
                    385:             next if ($file =~ /^\.\.?$/);
                    386:             my $fname = "$path/$file";
                    387:             if (-d $fname) {
                    388:                 my $innerdir;
                    389:                 if ($subdir eq '') {
                    390:                     $innerdir = $file;
                    391:                 } else {
                    392:                     $innerdir = $subdir.'/'.$file;
                    393:                 }
                    394:                 ($cleaned,$old,$removed) = 
                    395:                      &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors);
                    396:                 my @doms = &Apache::lonnet::current_machine_domains();
                    397:                 
                    398:                 if (open(my $dirhandle,$fname)) {
                    399:                     unless (($innerdir eq 'helprequests') ||
                    400:                             (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) {
                    401:                         my @contents = grep {!/^\.\.?$/} readdir($dirhandle);
                    402:                                       join('&&',@contents)."\n";    
                    403:                         if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) {
                    404:                             closedir($dirhandle);
                    405:                             if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) {
                    406:                                 if (rmdir($fname)) {
                    407:                                     $removed ++;
                    408:                                 } elsif (ref($errors->{dir}) eq 'ARRAY') {
                    409:                                     push(@{$errors->{dir}},$fname);
                    410:                                 }
                    411:                             }
                    412:                         }
                    413:                     } else {
                    414:                         closedir($dirhandle);
                    415:                     }
                    416:                 }
                    417:             } else {
                    418:                 my ($dev,$ino,$mode,$nlink,
                    419:                     $uid,$gid,$rdev,$size,
                    420:                     $atime,$mtime,$ctime,
                    421:                     $blksize,$blocks)=stat($fname);
                    422:                 my $now=time;
                    423:                 my $since=$now-$mtime;
                    424:                 if ($since>$perlvar{'lonExpire'}) {
                    425:                     if ($subdir eq '') {
                    426:                         my $line='';
                    427:                         if ($fname =~ /\.db$/) {
                    428:                             if (unlink($fname)) {
                    429:                                 $cleaned++;
                    430:                             } elsif (ref($errors->{file}) eq 'ARRAY') {
                    431:                                 push(@{$errors->{file}},$fname);
                    432:                             }
                    433:                         } elsif (open(PROBE,$fname)) {
                    434:                             my $line='';
                    435:                             $line=<PROBE>;
                    436:                             close(PROBE);
                    437:                             if ($line=~/^CHECKOUTTOKEN\&/) {
                    438:                                 if ($since>365*$perlvar{'lonExpire'}) {
                    439:                                     if (unlink($fname)) {
                    440:                                         $cleaned++; 
                    441:                                     } elsif (ref($errors->{file}) eq 'ARRAY') {
                    442:                                         push(@{$errors->{file}},$fname);
                    443:                                     }
                    444:                                 } else {
                    445:                                     $old++;
                    446:                                 }
                    447:                             } else {
                    448:                                 if (unlink($fname)) {
                    449:                                     $cleaned++;
                    450:                                 } elsif (ref($errors->{file}) eq 'ARRAY') {
                    451:                                     push(@{$errors->{file}},$fname);
                    452:                                 }
                    453:                             }
                    454:                         } elsif (ref($errors->{failopen}) eq 'ARRAY') {
                    455:                             push(@{$errors->{failopen}},$fname); 
                    456:                         }
                    457:                     } else {
                    458:                         if (unlink($fname)) {
                    459:                             $cleaned++;
                    460:                         } elsif (ref($errors->{file}) eq 'ARRAY') {
                    461:                             push(@{$errors->{file}},$fname);
                    462:                         }
                    463:                     }
                    464:                 }
                    465:             }
                    466:         }
                    467:         closedir($dh);
                    468:     } elsif (ref($errors->{failopen}) eq 'ARRAY') {
                    469:         push(@{$errors->{failopen}},$path);
1.43      albertel  470:     }
1.82      raeburn   471:     return ($cleaned,$old,$removed);
1.46      albertel  472: }
1.11      www       473: 
                    474: # ------------------------------------------------------------ clean out lonIDs
1.46      albertel  475: sub clean_lonIDs {
                    476:     my ($fh)=@_;
1.48      albertel  477:     &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
1.46      albertel  478:     my $cleaned=0;
                    479:     my $active=0;
                    480:     while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
1.43      albertel  481: 	my ($dev,$ino,$mode,$nlink,
                    482: 	    $uid,$gid,$rdev,$size,
                    483: 	    $atime,$mtime,$ctime,
                    484: 	    $blksize,$blocks)=stat($fname);
1.46      albertel  485: 	my $now=time;
                    486: 	my $since=$now-$mtime;
1.43      albertel  487: 	if ($since>$perlvar{'lonExpire'}) {
                    488: 	    $cleaned++;
1.46      albertel  489: 	    &log($fh,"Unlinking $fname<br>");
1.43      albertel  490: 	    unlink("$fname");
                    491: 	} else {
                    492: 	    $active++;
                    493: 	}
1.46      albertel  494:     }
1.48      albertel  495:     &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
1.46      albertel  496:     &log($fh,"<h3>$active open session(s)</h3>");
                    497: }
1.43      albertel  498: 
1.74      albertel  499: # ----------------------------------------------------------- clean out sockets
                    500: sub clean_sockets {
                    501:     my ($fh)=@_;
                    502:     my $cleaned=0;
                    503:     opendir(SOCKETS,$perlvar{'lonSockDir'});
                    504:     while (my $fname=readdir(SOCKETS)) {
                    505: 	next if (-d $fname 
1.80      www       506: 		 || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/);
1.74      albertel  507: 	$cleaned++;
                    508: 	&log($fh,"Unlinking $fname<br />");
                    509: 	unlink("/home/httpd/sockets/$fname");
                    510:     }
                    511:     &log($fh,"<p>Cleaned up ".$cleaned." stale sockets.</p>");
                    512: }
                    513: 
1.11      www       514: 
1.1       albertel  515: # ----------------------------------------------------------------------- httpd
1.46      albertel  516: sub check_httpd_logs {
                    517:     my ($fh)=@_;
1.48      albertel  518:     &log($fh,'<hr /><a name="httpd" /><h2>httpd</h2><h3>Access Log</h3><pre>');
1.43      albertel  519:     
                    520:     open (DFH,"tail -n25 /etc/httpd/logs/access_log|");
1.48      albertel  521:     while (my $line=<DFH>) { &log($fh,&encode_entities($line,'<>&"')) };
1.43      albertel  522:     close (DFH);
1.46      albertel  523: 	
                    524:     &log($fh,"</pre><h3>Error Log</h3><pre>");
                    525: 	
1.43      albertel  526:     open (DFH,"tail -n25 /etc/httpd/logs/error_log|");
1.46      albertel  527:     while (my $line=<DFH>) { 
                    528: 	&log($fh,"$line");
1.43      albertel  529: 	if ($line=~/\[error\]/) { $notices++; } 
1.46      albertel  530:     }
1.43      albertel  531:     close (DFH);
1.46      albertel  532:     &log($fh,"</pre>");
1.43      albertel  533:     &errout($fh);
1.46      albertel  534: }
1.1       albertel  535: 
                    536: # ---------------------------------------------------------------------- lonnet
                    537: 
1.48      albertel  538: sub rotate_lonnet_logs {
1.46      albertel  539:     my ($fh)=@_;
1.48      albertel  540:     &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
1.43      albertel  541:     print "checking logs\n";
                    542:     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
                    543: 	open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
1.46      albertel  544: 	while (my $line=<DFH>) { 
1.48      albertel  545: 	    &log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  546: 	}
1.43      albertel  547: 	close (DFH);
                    548:     }
1.46      albertel  549:     &log($fh,"</pre><h3>Perm Log</h3><pre>");
1.43      albertel  550:     
                    551:     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
                    552: 	open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
1.46      albertel  553: 	while (my $line=<DFH>) { 
1.48      albertel  554: 	    &log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  555: 	}
1.43      albertel  556: 	close (DFH);
1.46      albertel  557:     } else { &log($fh,"No perm log\n") }
1.43      albertel  558: 
1.46      albertel  559:     my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
1.73      albertel  560:     &rotate_logfile($fname,$fh,'lonnet log');
1.1       albertel  561: 
1.46      albertel  562:     &log($fh,"</pre>");
1.43      albertel  563:     &errout($fh);
1.46      albertel  564: }
                    565: 
1.73      albertel  566: sub rotate_other_logs {
                    567:     my ($fh) = @_;
1.83      raeburn   568:     my %logs = (
                    569:                   autoenroll          => 'Auto Enroll log',
                    570:                   autocreate          => 'Create Course log',
                    571:                   searchcat           => 'Search Cataloguing log',
                    572:                   autoupdate          => 'Auto Update log',
                    573:                   refreshcourseids_db => 'Refresh CourseIDs db log',
                    574:                );
                    575:     foreach my $item (keys(%logs)) {
                    576:         my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
                    577:         &rotate_logfile($fname,$fh,$logs{$item});
                    578:     }
1.73      albertel  579: }
                    580: 
1.43      albertel  581: # ----------------------------------------------------------------- Connections
1.46      albertel  582: sub test_connections {
1.72      albertel  583:     my ($fh)=@_;
1.48      albertel  584:     &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
1.43      albertel  585:     print "testing connections\n";
1.48      albertel  586:     &log($fh,"<table border='2'>");
1.49      albertel  587:     my ($good,$bad)=(0,0);
1.72      albertel  588:     my %hostname = &Apache::lonnet::all_hostnames();
                    589:     foreach my $tryserver (sort(keys(%hostname))) {
1.43      albertel  590: 	print(".");
1.46      albertel  591: 	my $result;
1.72      albertel  592: 	my $answer=&Apache::lonnet::reply("ping",$tryserver);
1.43      albertel  593: 	if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
                    594: 	    $result="<b>ok</b>";
1.49      albertel  595: 	    $good++;
1.43      albertel  596: 	} else {
                    597: 	    $result=$answer;
                    598: 	    $warnings++;
1.49      albertel  599: 	    if ($answer eq 'con_lost') {
                    600: 		$bad++;
                    601: 		$warnings++;
1.50      albertel  602: 	    } else {
                    603: 		$good++; #self connection
1.49      albertel  604: 	    }
1.43      albertel  605: 	}
                    606: 	if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
1.46      albertel  607: 	&log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
1.1       albertel  608:     }
1.46      albertel  609:     &log($fh,"</table>");
1.49      albertel  610:     print "\n$good good, $bad bad connections\n";
1.43      albertel  611:     &errout($fh);
1.46      albertel  612: }
                    613: 
                    614: 
1.1       albertel  615: # ------------------------------------------------------------ Delayed messages
1.46      albertel  616: sub check_delayed_msg {
1.72      albertel  617:     my ($fh)=@_;
1.48      albertel  618:     &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
1.43      albertel  619:     print "checking buffers\n";
1.46      albertel  620:     
                    621:     &log($fh,'<h3>Scanning Permanent Log</h3>');
1.1       albertel  622: 
1.46      albertel  623:     my $unsend=0;
1.1       albertel  624: 
1.46      albertel  625:     my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log");
                    626:     while (my $line=<$dfh>) {
                    627: 	my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line);
                    628: 	if ($sdf eq 'F') { 
                    629: 	    my $local=localtime($time);
                    630: 	    &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br>");
                    631: 	    $warnings++;
1.43      albertel  632: 	}
1.46      albertel  633: 	if ($sdf eq 'S') { $unsend--; }
                    634: 	if ($sdf eq 'D') { $unsend++; }
1.1       albertel  635:     }
1.46      albertel  636: 
1.48      albertel  637:     &log($fh,"<p>Total unsend messages: <b>$unsend</b></p>\n");
1.43      albertel  638:     $warnings=$warnings+5*$unsend;
1.1       albertel  639: 
1.43      albertel  640:     if ($unsend) { $simplestatus{'unsend'}=$unsend; }
1.48      albertel  641:     &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
1.68      www       642: # list directory with delayed messages and remember offline servers
                    643:     my %servers=();
1.43      albertel  644:     open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
1.68      www       645:     while (my $line=<DFH>) {
                    646:         my ($server)=($line=~/\.(\w+)$/);
                    647:         if ($server) { $servers{$server}=1; }
1.48      albertel  648: 	&log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  649:     }
1.48      albertel  650:     &log($fh,"</pre>\n");
1.43      albertel  651:     close (DFH);
1.68      www       652: # pong to all servers that have delayed messages
                    653: # this will trigger a reverse connection, which should flush the buffers
                    654:     foreach my $tryserver (keys %servers) {
1.72      albertel  655: 	my $answer=&Apache::lonnet::reply("pong",$tryserver);
1.69      www       656: 	&log($fh,"Pong to $tryserver: $answer<br />");
1.68      www       657:     }
1.46      albertel  658: }
1.1       albertel  659: 
1.46      albertel  660: sub finish_logging {
                    661:     my ($fh)=@_;
1.48      albertel  662:     &log($fh,"<a name='errcount' />\n");
1.43      albertel  663:     $totalcount=$notices+4*$warnings+100*$errors;
                    664:     &errout($fh);
1.46      albertel  665:     &log($fh,"<h1>Total Error Count: $totalcount</h1>");
                    666:     my $now=time;
                    667:     my $date=localtime($now);
1.48      albertel  668:     &log($fh,"<hr />$date ($now)</body></html>\n");
1.43      albertel  669:     print "lon-status webpage updated\n";
                    670:     $fh->close();
1.46      albertel  671: 
                    672:     if ($errors) { $simplestatus{'errors'}=$errors; }
                    673:     if ($warnings) { $simplestatus{'warnings'}=$warnings; }
                    674:     if ($notices) { $simplestatus{'notices'}=$notices; }
                    675:     $simplestatus{'time'}=time;
1.1       albertel  676: }
                    677: 
1.46      albertel  678: sub log_simplestatus {
1.73      albertel  679:     rename("$statusdir/newstatus.html","$statusdir/index.html");
1.46      albertel  680:     
1.43      albertel  681:     my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
                    682:     foreach (keys %simplestatus) {
                    683: 	print $sfh $_.'='.$simplestatus{$_}.'&';
                    684:     }
                    685:     print $sfh "\n";
                    686:     $sfh->close();
1.41      www       687: }
1.46      albertel  688: 
1.84      raeburn   689: sub write_loncaparevs {
1.90    ! raeburn   690:     print "Retrieving LON-CAPA version information\n";
1.84      raeburn   691:     if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
                    692:         my %hostname = &Apache::lonnet::all_hostnames();
                    693:         foreach my $id (sort(keys(%hostname))) {
                    694:             if ($id ne '') {
1.90    ! raeburn   695:                 my $loncaparev;
        !           696:                 eval {
        !           697:                     local $SIG{ ALRM } = sub { die "TIMEOUT" };
        !           698:                     alarm(10);
        !           699:                     $loncaparev =
        !           700:                         &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron');
        !           701:                     alarm(0);
        !           702:                 };
        !           703:                 if ($@ && $@ =~ m/TIMEOUT/) {
        !           704:                     print "time out while contacting lonHost: $id for version\n";   
        !           705:                 }
1.86      raeburn   706:                 if ($loncaparev =~ /^[\w.\-]+$/) {
1.84      raeburn   707:                     print $fh $id.':'.$loncaparev."\n";
                    708:                 }
                    709:             }
                    710:         }
                    711:         close($fh);
                    712:     }
                    713:     return;
                    714: }
                    715: 
1.85      raeburn   716: sub write_serverhomeIDs {
1.90    ! raeburn   717:     print "Retrieving LON-CAPA lonHostID information\n";
1.85      raeburn   718:     if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) {
                    719:         my %name_to_host = &Apache::lonnet::all_names();
                    720:         foreach my $name (sort(keys(%name_to_host))) {
                    721:             if ($name ne '') {
                    722:                 if (ref($name_to_host{$name}) eq 'ARRAY') {
1.90    ! raeburn   723:                     my $serverhomeID;
        !           724:                     eval {
        !           725:                         local $SIG{ ALRM } = sub { die "TIMEOUT" };
        !           726:                         alarm(10);
        !           727:                         $serverhomeID = 
        !           728:                             &Apache::lonnet::get_server_homeID($name,1,'loncron');
        !           729:                         alarm(0);
        !           730:                     };
        !           731:                     if ($@ && $@ =~ m/TIMEOUT/) {
        !           732:                         print "Time out while contacting server: $name\n"; 
        !           733:                     }
1.85      raeburn   734:                     if ($serverhomeID ne '') {
                    735:                         print $fh $name.':'.$serverhomeID."\n";
                    736:                     } else {
                    737:                         print $fh $name.':'.$name_to_host{$name}->[0]."\n";
                    738:                     }
                    739:                 }
                    740:             }
                    741:         }
                    742:         close($fh);
                    743:     }
                    744:     return;
                    745: }
                    746: 
1.46      albertel  747: sub send_mail {
1.43      albertel  748:     print "sending mail\n";
1.79      raeburn   749:     my $defdom = $perlvar{'lonDefDomain'};
                    750:     my $origmail = $perlvar{'lonAdmEMail'};
1.78      raeburn   751:     my $emailto = &Apache::loncommon::build_recipient_list(undef,
                    752:                                    'lonstatusmail',$defdom,$origmail);
1.54      www       753:     if ($totalcount>2500) {
1.43      albertel  754: 	$emailto.=",$perlvar{'lonSysEMail'}";
                    755:     }
1.46      albertel  756:     my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; 
1.52      albertel  757: 
1.58      albertel  758:     my $result=system("metasend -b -S 4000000 -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
1.52      albertel  759:     if ($result != 0) {
                    760: 	$result=system("mail -s '$subj' $emailto < $statusdir/index.html");
                    761:     }
1.1       albertel  762: }
1.46      albertel  763: 
1.49      albertel  764: sub usage {
                    765:     print(<<USAGE);
                    766: loncron - housekeeping program that checks up on various parts of Lon-CAPA
                    767: 
                    768: Options:
1.71      albertel  769:    --help     Display 
1.49      albertel  770:    --noemail  Do not send the status email
                    771:    --justcheckconnections  Only check the current status of the lonc/d
                    772:                                 connections, do not send emails do not
                    773:                                 check if the daemons are running, do not
                    774:                                 generate lon-status
                    775:    --justcheckdaemons      Only check that all of the Lon-CAPA daemons are
                    776:                                 running, do not send emails do not
                    777:                                 check the lonc/d connections, do not
                    778:                                 generate lon-status
1.59      albertel  779:    --justreload            Only tell the daemons to reload the config files,
                    780: 				do not send emails do not
                    781:                                 check if the daemons are running, do not
                    782:                                 generate lon-status
1.49      albertel  783:                            
                    784: USAGE
                    785: }
                    786: 
1.46      albertel  787: # ================================================================ Main Program
                    788: sub main () {
1.71      albertel  789:     my ($help,$justcheckdaemons,$noemail,$justcheckconnections,
1.59      albertel  790: 	$justreload);
1.49      albertel  791:     &GetOptions("help"                 => \$help,
                    792: 		"justcheckdaemons"     => \$justcheckdaemons,
                    793: 		"noemail"              => \$noemail,
1.59      albertel  794: 		"justcheckconnections" => \$justcheckconnections,
                    795: 		"justreload"           => \$justreload
1.49      albertel  796: 		);
                    797:     if ($help) { &usage(); return; }
1.46      albertel  798: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
                    799:     my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
                    800:     %perlvar=%{$perlvarref};
                    801:     undef $perlvarref;
                    802:     delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
                    803:     delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1.75      albertel  804:     chdir($perlvar{'lonDaemons'});
1.46      albertel  805: # --------------------------------------- Make sure that LON-CAPA is configured
                    806: # I only test for one thing here (lonHostID).  This is just a safeguard.
                    807:     if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
                    808: 	print("Unconfigured machine.\n");
                    809: 	my $emailto=$perlvar{'lonSysEMail'};
                    810: 	my $hostname=`/bin/hostname`;
                    811: 	chop $hostname;
                    812: 	$hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell
                    813: 	my $subj="LON: Unconfigured machine $hostname";
                    814: 	system("echo 'Unconfigured machine $hostname.' |\
                    815:  mailto $emailto -s '$subj' > /dev/null");
                    816: 	exit 1;
                    817:     }
                    818: 
                    819: # ----------------------------- Make sure this process is running from user=www
                    820:     my $wwwid=getpwnam('www');
                    821:     if ($wwwid!=$<) {
                    822: 	print("User ID mismatch.  This program must be run as user 'www'\n");
                    823: 	my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
                    824: 	my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
                    825: 	system("echo 'User ID mismatch.  loncron must be run as user www.' |\
                    826:  mailto $emailto -s '$subj' > /dev/null");
                    827: 	exit 1;
                    828:     }
                    829: 
1.72      albertel  830: # -------------------------------------------- Force reload of host information
                    831:     &Apache::lonnet::load_hosts_tab(1);
                    832:     &Apache::lonnet::load_domain_tab(1);
                    833:     &Apache::lonnet::get_iphost(1);
1.46      albertel  834: 
1.81      raeburn   835: # ----------------------------------------- Force firewall update for lond port  
                    836: 
                    837:     if ((!$justcheckdaemons) && (!$justreload)) {
                    838:         my $now = time;
                    839:         my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'.
                    840:                       $now.$$.int(rand(10000));
                    841:         if (open(my $fh,">$tmpfile")) {
                    842:             my %iphosts = &Apache::lonnet::get_iphost();
                    843:             foreach my $key (keys(%iphosts)) {
                    844:                 print $fh "$key\n";
                    845:             }
                    846:             close($fh);
1.89      raeburn   847:             if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) {
                    848:                 my $execpath = $perlvar{'lonDaemons'}.'/lciptables';
                    849:                 system("$execpath $tmpfile");
                    850:                 unlink('/tmp/lock_lciptables');  # Remove the lock file. 
                    851:             }
1.88      raeburn   852:             unlink($tmpfile);
1.81      raeburn   853:         }
                    854:     }
                    855: 
1.46      albertel  856: # ---------------------------------------------------------------- Start report
                    857: 
                    858:     $errors=0;
                    859:     $warnings=0;
                    860:     $notices=0;
                    861: 
                    862: 	
1.49      albertel  863:     my $fh;
1.59      albertel  864:     if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1.72      albertel  865: 	$fh=&start_logging();
1.49      albertel  866: 
                    867: 	&log_machine_info($fh);
                    868: 	&clean_tmp($fh);
                    869: 	&clean_lonIDs($fh);
                    870: 	&check_httpd_logs($fh);
                    871: 	&rotate_lonnet_logs($fh);
1.73      albertel  872: 	&rotate_other_logs($fh);
1.49      albertel  873:     }
1.59      albertel  874:     if (!$justcheckconnections && !$justreload) {
1.76      albertel  875: 	&checkon_daemon($fh,'lonmemcached',40000);
1.49      albertel  876: 	&checkon_daemon($fh,'lonsql',200000);
1.63      albertel  877: 	if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
                    878: 	    &checkon_daemon($fh,'lond',40000,'USR2');
                    879: 	}
1.71      albertel  880: 	&checkon_daemon($fh,'lonc',40000,'USR1');
1.70      raeburn   881:         &checkon_daemon($fh,'lonmaxima',40000);
1.80      www       882:         &checkon_daemon($fh,'lonr',40000);
1.49      albertel  883:     }
1.59      albertel  884:     if ($justreload) {
                    885: 	&checkon_daemon($fh,'lond',40000,'USR2');
1.71      albertel  886: 	&checkon_daemon($fh,'lonc',40000,'USR2');
1.59      albertel  887:     }
1.63      albertel  888:     if ($justcheckconnections) {
1.72      albertel  889: 	&test_connections($fh);
1.49      albertel  890:     }
1.59      albertel  891:     if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1.72      albertel  892: 	&check_delayed_msg($fh);
1.49      albertel  893: 	&finish_logging($fh);
                    894: 	&log_simplestatus();
1.87      raeburn   895:         &write_loncaparevs();
                    896:         &write_serverhomeIDs();
1.49      albertel  897: 	
                    898: 	if ($totalcount>200 && !$noemail) { &send_mail(); }
                    899:     }
1.46      albertel  900: }
                    901: 
                    902: &main();
1.1       albertel  903: 1;
                    904: 
                    905: 
                    906: 
                    907: 
                    908: 
                    909: 
                    910: 
                    911: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>