Annotation of loncom/loncron, revision 1.67

1.1       albertel    1: #!/usr/bin/perl
                      2: 
1.47      albertel    3: # Housekeeping program, started by cron, loncontrol and loncron.pl
                      4: #
1.67    ! albertel    5: # $Id: loncron,v 1.66 2006/02/06 09:08:56 albertel 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;
                     35: 
1.1       albertel   36: use IO::File;
                     37: use IO::Socket;
1.48      albertel   38: use HTML::Entities;
1.49      albertel   39: use Getopt::Long;
1.46      albertel   40: #globals
                     41: use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount);
                     42: 
                     43: my $statusdir="/home/httpd/html/lon-status";
                     44: 
1.1       albertel   45: 
                     46: # -------------------------------------------------- Non-critical communication
                     47: sub reply {
1.64      albertel   48:     my ($cmd,$server,$hostname)=@_;
                     49:     my $peerfile="$perlvar{'lonSockDir'}/".$hostname->{$server};
1.1       albertel   50:     my $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",
                     51:                                      Type    => SOCK_STREAM,
                     52:                                      Timeout => 10)
                     53:        or return "con_lost";
1.64      albertel   54:     print $client "sethost:$server:$cmd\n";
1.1       albertel   55:     my $answer=<$client>;
                     56:     chomp($answer);
                     57:     if (!$answer) { $answer="con_lost"; }
                     58:     return $answer;
                     59: }
                     60: 
                     61: # --------------------------------------------------------- Output error status
                     62: 
1.46      albertel   63: sub log {
                     64:     my $fh=shift;
                     65:     if ($fh) {	print $fh @_  }
                     66: }
                     67: 
1.1       albertel   68: sub errout {
                     69:    my $fh=shift;
1.46      albertel   70:    &log($fh,(<<ENDERROUT));
1.48      albertel   71:      <table border="2" bgcolor="#CCCCCC">
1.1       albertel   72:      <tr><td>Notices</td><td>$notices</td></tr>
                     73:      <tr><td>Warnings</td><td>$warnings</td></tr>
                     74:      <tr><td>Errors</td><td>$errors</td></tr>
1.48      albertel   75:      </table><p><a href="#top">Top</a></p>
1.1       albertel   76: ENDERROUT
                     77: }
                     78: 
1.42      albertel   79: sub start_daemon {
1.50      albertel   80:     my ($fh,$daemon,$pidfile,$args) = @_;
1.44      albertel   81:     my $progname=$daemon;
1.50      albertel   82:     if ($daemon eq 'lonc' && $args eq 'new') {
1.44      albertel   83: 	$progname='loncnew'; 
                     84: 	print "new ";
                     85:     }
1.51      albertel   86:     my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors";
                     87:     my $size=(stat($error_fname))[7];
                     88:     if ($size>40000) {
                     89: 	&log($fh,"<p>Rotating error logs ...</p>");
                     90: 	rename("$error_fname.2","$error_fname.3");
                     91: 	rename("$error_fname.1","$error_fname.2");
                     92: 	rename("$error_fname","$error_fname.1");
                     93:     }
                     94:     system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
1.60      albertel   95:     sleep 1;
1.42      albertel   96:     if (-e $pidfile) {
1.48      albertel   97: 	&log($fh,"<p>Seems like it started ...</p>");
1.42      albertel   98: 	my $lfh=IO::File->new("$pidfile");
                     99: 	my $daemonpid=<$lfh>;
                    100: 	chomp($daemonpid);
1.62      albertel  101: 	if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
1.42      albertel  102: 	    return 1;
                    103: 	} else {
                    104: 	    return 0;
                    105: 	}
                    106:     }
1.48      albertel  107:     &log($fh,"<p>Seems like that did not work!</p>");
1.42      albertel  108:     $errors++;
                    109:     return 0;
                    110: }
                    111: 
                    112: sub checkon_daemon {
1.59      albertel  113:     my ($fh,$daemon,$maxsize,$send,$args)=@_;
1.42      albertel  114: 
1.63      albertel  115:     my $result;
1.48      albertel  116:     &log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
1.57      albertel  117:     printf("%-15s ",$daemon);
1.42      albertel  118:     if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
                    119: 	open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
1.46      albertel  120: 	while (my $line=<DFH>) { 
                    121: 	    &log($fh,"$line");
1.42      albertel  122: 	    if ($line=~/INFO/) { $notices++; }
                    123: 	    if ($line=~/WARNING/) { $notices++; }
                    124: 	    if ($line=~/CRITICAL/) { $warnings++; }
                    125: 	};
                    126: 	close (DFH);
                    127:     }
1.48      albertel  128:     &log($fh,"</tt></p>");
1.42      albertel  129:     
                    130:     my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid";
                    131:     
                    132:     my $restartflag=1;
1.46      albertel  133:     my $daemonpid;
1.42      albertel  134:     if (-e $pidfile) {
                    135: 	my $lfh=IO::File->new("$pidfile");
1.46      albertel  136: 	$daemonpid=<$lfh>;
1.42      albertel  137: 	chomp($daemonpid);
1.62      albertel  138: 	if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
1.46      albertel  139: 	    &log($fh,"<h3>$daemon at pid $daemonpid responding");
1.59      albertel  140: 	    if ($send) { &log($fh,", sending $send"); }
1.46      albertel  141: 	    &log($fh,"</h3>");
1.59      albertel  142: 	    if ($send eq 'USR1') { kill USR1 => $daemonpid; }
                    143: 	    if ($send eq 'USR2') { kill USR2 => $daemonpid; }
1.42      albertel  144: 	    $restartflag=0;
1.59      albertel  145: 	    if ($send eq 'USR2') {
1.63      albertel  146: 		$result = 'reloaded';
1.59      albertel  147: 		print "reloaded\n";
                    148: 	    } else {
1.63      albertel  149: 		$result = 'running';
1.59      albertel  150: 		print "running\n";
                    151: 	    }
1.42      albertel  152: 	} else {
                    153: 	    $errors++;
1.46      albertel  154: 	    &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.42      albertel  155: 	    $restartflag=1;
1.46      albertel  156: 	    &log($fh,"<h3>Decided to clean up stale .pid file and restart $daemon</h3>");
1.42      albertel  157: 	}
                    158:     }
                    159:     if ($restartflag==1) {
                    160: 	$simplestatus{$daemon}='off';
                    161: 	$errors++;
1.57      albertel  162: 	my $kadaemon=$daemon;
                    163: 	if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
1.46      albertel  164: 	&log($fh,'<br><font color="red">Killall '.$daemon.': '.
1.57      albertel  165: 	    `killall $kadaemon 2>&1`.' - ');
1.60      albertel  166: 	sleep 1;
1.46      albertel  167: 	&log($fh,unlink($pidfile).' - '.
1.57      albertel  168: 	    `killall -9 $kadaemon 2>&1`.
1.46      albertel  169: 	    '</font><br>');
                    170: 	&log($fh,"<h3>$daemon not running, trying to start</h3>");
1.42      albertel  171: 	
1.50      albertel  172: 	if (&start_daemon($fh,$daemon,$pidfile,$args)) {
1.46      albertel  173: 	    &log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
1.42      albertel  174: 	    $simplestatus{$daemon}='restarted';
1.63      albertel  175: 	    $result = 'started';
1.42      albertel  176: 	    print "started\n";
                    177: 	} else {
                    178: 	    $errors++;
1.46      albertel  179: 	    &log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.48      albertel  180: 	    &log($fh,"<p>Give it one more try ...</p>");
1.42      albertel  181: 	    print " ";
1.50      albertel  182: 	    if (&start_daemon($fh,$daemon,$pidfile,$args)) {
1.46      albertel  183: 		&log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
1.42      albertel  184: 		$simplestatus{$daemon}='restarted';
1.63      albertel  185: 		$result = 'started';
1.42      albertel  186: 		print "started\n";
                    187: 	    } else {
1.63      albertel  188: 		$result = 'failed';
1.42      albertel  189: 		print " failed\n";
                    190: 		$simplestatus{$daemon}='failed';
                    191: 		$errors++; $errors++;
1.46      albertel  192: 		&log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
1.48      albertel  193: 		&log($fh,"<p>Unable to start $daemon</p>");
1.42      albertel  194: 	    }
                    195: 	}
                    196: 
                    197: 	if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
1.46      albertel  198: 	    &log($fh,"<p><pre>");
1.42      albertel  199: 	    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|");
1.46      albertel  200: 	    while (my $line=<DFH>) { 
                    201: 		&log($fh,"$line");
1.42      albertel  202: 		if ($line=~/WARNING/) { $notices++; }
                    203: 		if ($line=~/CRITICAL/) { $notices++; }
                    204: 	    };
                    205: 	    close (DFH);
1.48      albertel  206: 	    &log($fh,"</pre></p>");
1.42      albertel  207: 	}
                    208:     }
                    209:     
1.46      albertel  210:     my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
1.42      albertel  211:     
                    212:     my ($dev,$ino,$mode,$nlink,
                    213: 	$uid,$gid,$rdev,$size,
                    214: 	$atime,$mtime,$ctime,
                    215: 	$blksize,$blocks)=stat($fname);
                    216:     
                    217:     if ($size>$maxsize) {
1.48      albertel  218: 	&log($fh,"<p>Rotating logs ...</p>");
1.42      albertel  219: 	rename("$fname.2","$fname.3");
                    220: 	rename("$fname.1","$fname.2");
                    221: 	rename("$fname","$fname.1");
                    222:     }
                    223: 
                    224:     &errout($fh);
1.63      albertel  225:     return $result;
1.42      albertel  226: }
1.1       albertel  227: 
1.46      albertel  228: # --------------------------------------------------------------------- Machine
                    229: sub log_machine_info {
                    230:     my ($fh)=@_;
1.48      albertel  231:     &log($fh,'<hr /><a name="machine" /><h2>Machine Information</h2>');
1.46      albertel  232:     &log($fh,"<h3>loadavg</h3>");
                    233: 	
                    234:     open (LOADAVGH,"/proc/loadavg");
                    235:     my $loadavg=<LOADAVGH>;
                    236:     close (LOADAVGH);
                    237:     
                    238:     &log($fh,"<tt>$loadavg</tt>");
                    239:     
                    240:     my @parts=split(/\s+/,$loadavg);
                    241:     if ($parts[1]>4.0) {
                    242: 	$errors++;
                    243:     } elsif ($parts[1]>2.0) {
                    244: 	$warnings++;
                    245:     } elsif ($parts[1]>1.0) {
                    246: 	$notices++;
                    247:     }
1.13      harris41  248: 
1.46      albertel  249:     &log($fh,"<h3>df</h3>");
                    250:     &log($fh,"<pre>");
1.14      harris41  251: 
1.46      albertel  252:     open (DFH,"df|");
                    253:     while (my $line=<DFH>) { 
1.48      albertel  254: 	&log($fh,&encode_entities($line,'<>&"')); 
1.46      albertel  255: 	@parts=split(/\s+/,$line);
                    256: 	my $usage=$parts[4];
                    257: 	$usage=~s/\W//g;
                    258: 	if ($usage>90) { 
                    259: 	    $warnings++;
                    260: 	    $notices++; 
                    261: 	} elsif ($usage>80) {
                    262: 	    $warnings++;
                    263: 	} elsif ($usage>60) {
                    264: 	    $notices++;
1.31      albertel  265: 	}
1.46      albertel  266: 	if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
1.1       albertel  267:     }
1.46      albertel  268:     close (DFH);
                    269:     &log($fh,"</pre>");
1.1       albertel  270: 
                    271: 
1.46      albertel  272:     &log($fh,"<h3>ps</h3>");
                    273:     &log($fh,"<pre>");
                    274:     my $psproc=0;
1.1       albertel  275: 
1.53      albertel  276:     open (PSH,"ps aux --cols 140 |");
1.46      albertel  277:     while (my $line=<PSH>) { 
1.48      albertel  278: 	&log($fh,&encode_entities($line,'<>&"')); 
1.46      albertel  279: 	$psproc++;
                    280:     }
                    281:     close (PSH);
                    282:     &log($fh,"</pre>");
1.1       albertel  283: 
1.46      albertel  284:     if ($psproc>200) { $notices++; }
                    285:     if ($psproc>250) { $notices++; }
1.1       albertel  286: 
1.61      albertel  287:     &log($fh,"<h3>distprobe</h3>");
                    288:     &log($fh,"<pre>");
                    289:     open(DSH,"$perlvar{'lonDaemons'}/distprobe |");
                    290:     while (my $line=<DSH>) { 
                    291: 	&log($fh,&encode_entities($line,'<>&"')); 
                    292: 	$psproc++;
                    293:     }
                    294:     close(DSH);
                    295:     &log($fh,"</pre>");
                    296: 
1.46      albertel  297:     &errout($fh);
                    298: }
1.1       albertel  299: 
1.46      albertel  300: sub start_logging {
                    301:     my ($hostdom,$hostrole,$hostname,$spareid)=@_;
1.43      albertel  302:     my $fh=IO::File->new(">$statusdir/newstatus.html");
                    303:     my %simplestatus=();
1.46      albertel  304:     my $now=time;
                    305:     my $date=localtime($now);
1.43      albertel  306:     
1.46      albertel  307: 
                    308:     &log($fh,(<<ENDHEADERS));
1.1       albertel  309: <html>
                    310: <head>
                    311: <title>LON Status Report $perlvar{'lonHostID'}</title>
                    312: </head>
1.3       www       313: <body bgcolor="#AAAAAA">
1.48      albertel  314: <a name="top" />
1.1       albertel  315: <h1>LON Status Report $perlvar{'lonHostID'}</h1>
                    316: <h2>$date ($now)</h2>
                    317: <ol>
1.48      albertel  318: <li><a href="#configuration">Configuration</a></li>
                    319: <li><a href="#machine">Machine Information</a></li>
                    320: <li><a href="#tmp">Temporary Files</a></li>
                    321: <li><a href="#tokens">Session Tokens</a></li>
                    322: <li><a href="#httpd">httpd</a></li>
                    323: <li><a href="#lonsql">lonsql</a></li>
                    324: <li><a href="#lond">lond</a></li>
                    325: <li><a href="#lonc">lonc</a></li>
                    326: <li><a href="#lonhttpd">lonhttpd</a></li>
                    327: <li><a href="#lonnet">lonnet</a></li>
                    328: <li><a href="#connections">Connections</a></li>
                    329: <li><a href="#delayed">Delayed Messages</a></li>
                    330: <li><a href="#errcount">Error Count</a></li>
1.1       albertel  331: </ol>
1.48      albertel  332: <hr />
                    333: <a name="configuration" />
1.1       albertel  334: <h2>Configuration</h2>
                    335: <h3>PerlVars</h3>
1.48      albertel  336: <table border="2">
1.1       albertel  337: ENDHEADERS
                    338: 
1.46      albertel  339:     foreach my $varname (sort(keys(%perlvar))) {
1.48      albertel  340: 	&log($fh,"<tr><td>$varname</td><td>".
                    341: 	     &encode_entities($perlvar{$varname},'<>&"')."</td></tr>\n");
1.43      albertel  342:     }
1.48      albertel  343:     &log($fh,"</table><h3>Hosts</h3><table border='2'>");
1.46      albertel  344:     foreach my $id (sort(keys(%{$hostname}))) {
                    345: 	&log($fh,
                    346: 	    "<tr><td>$id</td><td>".$hostdom->{$id}.
                    347: 	    "</td><td>".$hostrole->{$id}.
                    348: 	    "</td><td>".$hostname->{$id}."</td></tr>\n");
                    349:     }
                    350:     &log($fh,"</table><h3>Spare Hosts</h3><ol>");
                    351:     foreach my $id (sort(keys(%{$spareid}))) {
1.48      albertel  352: 	&log($fh,"<li>$id\n</li>");
1.43      albertel  353:     }
1.46      albertel  354:     &log($fh,"</ol>\n");
                    355:     return $fh;
                    356: }
1.11      www       357: 
                    358: # --------------------------------------------------------------- clean out tmp
1.46      albertel  359: sub clean_tmp {
                    360:     my ($fh)=@_;
1.48      albertel  361:     &log($fh,'<hr /><a name="tmp" /><h2>Temporary Files</h2>');
1.46      albertel  362:     my $cleaned=0;
                    363:     my $old=0;
                    364:     while (my $fname=<$perlvar{'lonDaemons'}/tmp/*>) {
1.43      albertel  365: 	my ($dev,$ino,$mode,$nlink,
                    366: 	    $uid,$gid,$rdev,$size,
                    367: 	    $atime,$mtime,$ctime,
                    368: 	    $blksize,$blocks)=stat($fname);
1.46      albertel  369: 	my $now=time;
                    370: 	my $since=$now-$mtime;
1.43      albertel  371: 	if ($since>$perlvar{'lonExpire'}) {
1.46      albertel  372: 	    my $line='';
1.43      albertel  373: 	    if (open(PROBE,$fname)) {
                    374: 		$line=<PROBE>;
                    375: 		close(PROBE);
                    376: 	    }
                    377: 	    unless ($line=~/^CHECKOUTTOKEN\&/) {
                    378: 		$cleaned++;
                    379: 		unlink("$fname");
                    380: 	    } else {
                    381: 		if ($since>365*$perlvar{'lonExpire'}) {
                    382: 		    $cleaned++;
                    383: 		    unlink("$fname");
                    384: 		} else { $old++; }
                    385: 	    }
                    386: 	}
                    387:     }
1.46      albertel  388:     &log($fh,"Cleaned up ".$cleaned." files (".$old." old checkout tokens).");
                    389: }
1.11      www       390: 
                    391: # ------------------------------------------------------------ clean out lonIDs
1.46      albertel  392: sub clean_lonIDs {
                    393:     my ($fh)=@_;
1.48      albertel  394:     &log($fh,'<hr /><a name="tokens" /><h2>Session Tokens</h2>');
1.46      albertel  395:     my $cleaned=0;
                    396:     my $active=0;
                    397:     while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
1.43      albertel  398: 	my ($dev,$ino,$mode,$nlink,
                    399: 	    $uid,$gid,$rdev,$size,
                    400: 	    $atime,$mtime,$ctime,
                    401: 	    $blksize,$blocks)=stat($fname);
1.46      albertel  402: 	my $now=time;
                    403: 	my $since=$now-$mtime;
1.43      albertel  404: 	if ($since>$perlvar{'lonExpire'}) {
                    405: 	    $cleaned++;
1.46      albertel  406: 	    &log($fh,"Unlinking $fname<br>");
1.43      albertel  407: 	    unlink("$fname");
                    408: 	} else {
                    409: 	    $active++;
                    410: 	}
1.46      albertel  411:     }
1.48      albertel  412:     &log($fh,"<p>Cleaned up ".$cleaned." stale session token(s).</p>");
1.46      albertel  413:     &log($fh,"<h3>$active open session(s)</h3>");
                    414: }
1.43      albertel  415: 
1.11      www       416: 
1.1       albertel  417: # ----------------------------------------------------------------------- httpd
1.46      albertel  418: sub check_httpd_logs {
                    419:     my ($fh)=@_;
1.48      albertel  420:     &log($fh,'<hr /><a name="httpd" /><h2>httpd</h2><h3>Access Log</h3><pre>');
1.43      albertel  421:     
                    422:     open (DFH,"tail -n25 /etc/httpd/logs/access_log|");
1.48      albertel  423:     while (my $line=<DFH>) { &log($fh,&encode_entities($line,'<>&"')) };
1.43      albertel  424:     close (DFH);
1.46      albertel  425: 	
                    426:     &log($fh,"</pre><h3>Error Log</h3><pre>");
                    427: 	
1.43      albertel  428:     open (DFH,"tail -n25 /etc/httpd/logs/error_log|");
1.46      albertel  429:     while (my $line=<DFH>) { 
                    430: 	&log($fh,"$line");
1.43      albertel  431: 	if ($line=~/\[error\]/) { $notices++; } 
1.46      albertel  432:     }
1.43      albertel  433:     close (DFH);
1.46      albertel  434:     &log($fh,"</pre>");
1.43      albertel  435:     &errout($fh);
1.46      albertel  436: }
1.1       albertel  437: 
                    438: # ---------------------------------------------------------------------- lonnet
                    439: 
1.48      albertel  440: sub rotate_lonnet_logs {
1.46      albertel  441:     my ($fh)=@_;
1.48      albertel  442:     &log($fh,'<hr /><a name="lonnet" /><h2>lonnet</h2><h3>Temp Log</h3><pre>');
1.43      albertel  443:     print "checking logs\n";
                    444:     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
                    445: 	open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
1.46      albertel  446: 	while (my $line=<DFH>) { 
1.48      albertel  447: 	    &log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  448: 	}
1.43      albertel  449: 	close (DFH);
                    450:     }
1.46      albertel  451:     &log($fh,"</pre><h3>Perm Log</h3><pre>");
1.43      albertel  452:     
                    453:     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
                    454: 	open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
1.46      albertel  455: 	while (my $line=<DFH>) { 
1.48      albertel  456: 	    &log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  457: 	}
1.43      albertel  458: 	close (DFH);
1.46      albertel  459:     } else { &log($fh,"No perm log\n") }
1.43      albertel  460: 
1.46      albertel  461:     my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
1.43      albertel  462: 
                    463:     my ($dev,$ino,$mode,$nlink,
                    464: 	$uid,$gid,$rdev,$size,
                    465: 	$atime,$mtime,$ctime,
                    466: 	$blksize,$blocks)=stat($fname);
                    467: 
                    468:     if ($size>40000) {
1.48      albertel  469: 	&log($fh,"<p>Rotating logs ...</p>");
1.43      albertel  470: 	rename("$fname.2","$fname.3");
                    471: 	rename("$fname.1","$fname.2");
                    472: 	rename("$fname","$fname.1");
                    473:     }
1.1       albertel  474: 
1.46      albertel  475:     &log($fh,"</pre>");
1.43      albertel  476:     &errout($fh);
1.46      albertel  477: }
                    478: 
1.43      albertel  479: # ----------------------------------------------------------------- Connections
1.46      albertel  480: sub test_connections {
                    481:     my ($fh,$hostname)=@_;
1.48      albertel  482:     &log($fh,'<hr /><a name="connections" /><h2>Connections</h2>');
1.43      albertel  483:     print "testing connections\n";
1.48      albertel  484:     &log($fh,"<table border='2'>");
1.49      albertel  485:     my ($good,$bad)=(0,0);
1.46      albertel  486:     foreach my $tryserver (sort(keys(%{$hostname}))) {
1.43      albertel  487: 	print(".");
1.46      albertel  488: 	my $result;
1.64      albertel  489: 	my $answer=reply("ping",$tryserver,$hostname);
1.43      albertel  490: 	if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
                    491: 	    $result="<b>ok</b>";
1.49      albertel  492: 	    $good++;
1.43      albertel  493: 	} else {
                    494: 	    $result=$answer;
                    495: 	    $warnings++;
1.49      albertel  496: 	    if ($answer eq 'con_lost') {
                    497: 		$bad++;
                    498: 		$warnings++;
1.50      albertel  499: 	    } else {
                    500: 		$good++; #self connection
1.49      albertel  501: 	    }
1.43      albertel  502: 	}
                    503: 	if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
1.46      albertel  504: 	&log($fh,"<tr><td>$tryserver</td><td>$result</td></tr>\n");
1.1       albertel  505:     }
1.46      albertel  506:     &log($fh,"</table>");
1.49      albertel  507:     print "\n$good good, $bad bad connections\n";
1.43      albertel  508:     &errout($fh);
1.46      albertel  509: }
                    510: 
                    511: 
1.1       albertel  512: # ------------------------------------------------------------ Delayed messages
1.46      albertel  513: sub check_delayed_msg {
                    514:     my ($fh)=@_;
1.48      albertel  515:     &log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
1.43      albertel  516:     print "checking buffers\n";
1.46      albertel  517:     
                    518:     &log($fh,'<h3>Scanning Permanent Log</h3>');
1.1       albertel  519: 
1.46      albertel  520:     my $unsend=0;
1.1       albertel  521: 
1.46      albertel  522:     my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log");
                    523:     while (my $line=<$dfh>) {
                    524: 	my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line);
                    525: 	if ($sdf eq 'F') { 
                    526: 	    my $local=localtime($time);
                    527: 	    &log($fh,"<b>Failed: $time, $dserv, $dcmd</b><br>");
                    528: 	    $warnings++;
1.43      albertel  529: 	}
1.46      albertel  530: 	if ($sdf eq 'S') { $unsend--; }
                    531: 	if ($sdf eq 'D') { $unsend++; }
1.1       albertel  532:     }
1.46      albertel  533: 
1.48      albertel  534:     &log($fh,"<p>Total unsend messages: <b>$unsend</b></p>\n");
1.43      albertel  535:     $warnings=$warnings+5*$unsend;
1.1       albertel  536: 
1.43      albertel  537:     if ($unsend) { $simplestatus{'unsend'}=$unsend; }
1.48      albertel  538:     &log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
1.1       albertel  539: 
1.43      albertel  540:     open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
1.46      albertel  541:     while (my $line=<DFH>) { 
1.48      albertel  542: 	&log($fh,&encode_entities($line,'<>&"'));
1.46      albertel  543:     }
1.48      albertel  544:     &log($fh,"</pre>\n");
1.43      albertel  545:     close (DFH);
1.46      albertel  546: }
1.1       albertel  547: 
1.46      albertel  548: sub finish_logging {
                    549:     my ($fh)=@_;
1.48      albertel  550:     &log($fh,"<a name='errcount' />\n");
1.43      albertel  551:     $totalcount=$notices+4*$warnings+100*$errors;
                    552:     &errout($fh);
1.46      albertel  553:     &log($fh,"<h1>Total Error Count: $totalcount</h1>");
                    554:     my $now=time;
                    555:     my $date=localtime($now);
1.48      albertel  556:     &log($fh,"<hr />$date ($now)</body></html>\n");
1.43      albertel  557:     print "lon-status webpage updated\n";
                    558:     $fh->close();
1.46      albertel  559: 
                    560:     if ($errors) { $simplestatus{'errors'}=$errors; }
                    561:     if ($warnings) { $simplestatus{'warnings'}=$warnings; }
                    562:     if ($notices) { $simplestatus{'notices'}=$notices; }
                    563:     $simplestatus{'time'}=time;
1.1       albertel  564: }
                    565: 
1.46      albertel  566: sub log_simplestatus {
                    567:     rename ("$statusdir/newstatus.html","$statusdir/index.html");
                    568:     
1.43      albertel  569:     my $sfh=IO::File->new(">$statusdir/loncron_simple.txt");
                    570:     foreach (keys %simplestatus) {
                    571: 	print $sfh $_.'='.$simplestatus{$_}.'&';
                    572:     }
                    573:     print $sfh "\n";
                    574:     $sfh->close();
1.41      www       575: }
1.46      albertel  576: 
                    577: sub send_mail {
1.43      albertel  578:     print "sending mail\n";
1.46      albertel  579:     my $emailto="$perlvar{'lonAdmEMail'}";
1.54      www       580:     if ($totalcount>2500) {
1.43      albertel  581: 	$emailto.=",$perlvar{'lonSysEMail'}";
                    582:     }
1.46      albertel  583:     my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; 
1.52      albertel  584: 
1.58      albertel  585:     my $result=system("metasend -b -S 4000000 -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
1.52      albertel  586:     if ($result != 0) {
                    587: 	$result=system("mail -s '$subj' $emailto < $statusdir/index.html");
                    588:     }
1.1       albertel  589: }
1.46      albertel  590: 
1.49      albertel  591: sub usage {
                    592:     print(<<USAGE);
                    593: loncron - housekeeping program that checks up on various parts of Lon-CAPA
                    594: 
                    595: Options:
                    596:    --help     Display help
                    597:    --oldlonc  When starting the lonc daemon use 'lonc' not 'loncnew'
                    598:    --noemail  Do not send the status email
                    599:    --justcheckconnections  Only check the current status of the lonc/d
                    600:                                 connections, do not send emails do not
                    601:                                 check if the daemons are running, do not
                    602:                                 generate lon-status
                    603:    --justcheckdaemons      Only check that all of the Lon-CAPA daemons are
                    604:                                 running, do not send emails do not
                    605:                                 check the lonc/d connections, do not
                    606:                                 generate lon-status
1.59      albertel  607:    --justreload            Only tell the daemons to reload the config files,
                    608: 				do not send emails do not
                    609:                                 check if the daemons are running, do not
                    610:                                 generate lon-status
1.49      albertel  611:                            
                    612: USAGE
                    613: }
                    614: 
1.46      albertel  615: # ================================================================ Main Program
                    616: sub main () {
1.59      albertel  617:     my ($oldlonc,$help,$justcheckdaemons,$noemail,$justcheckconnections,
                    618: 	$justreload);
1.49      albertel  619:     &GetOptions("help"                 => \$help,
                    620: 		"oldlonc"              => \$oldlonc,
                    621: 		"justcheckdaemons"     => \$justcheckdaemons,
                    622: 		"noemail"              => \$noemail,
1.59      albertel  623: 		"justcheckconnections" => \$justcheckconnections,
                    624: 		"justreload"           => \$justreload
1.49      albertel  625: 		);
                    626:     if ($help) { &usage(); return; }
1.46      albertel  627: # --------------------------------- Read loncapa_apache.conf and loncapa.conf
                    628:     my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
                    629:     %perlvar=%{$perlvarref};
                    630:     undef $perlvarref;
                    631:     delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
                    632:     delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
                    633: 
                    634: # --------------------------------------- Make sure that LON-CAPA is configured
                    635: # I only test for one thing here (lonHostID).  This is just a safeguard.
                    636:     if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) {
                    637: 	print("Unconfigured machine.\n");
                    638: 	my $emailto=$perlvar{'lonSysEMail'};
                    639: 	my $hostname=`/bin/hostname`;
                    640: 	chop $hostname;
                    641: 	$hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell
                    642: 	my $subj="LON: Unconfigured machine $hostname";
                    643: 	system("echo 'Unconfigured machine $hostname.' |\
                    644:  mailto $emailto -s '$subj' > /dev/null");
                    645: 	exit 1;
                    646:     }
                    647: 
                    648: # ----------------------------- Make sure this process is running from user=www
                    649:     my $wwwid=getpwnam('www');
                    650:     if ($wwwid!=$<) {
                    651: 	print("User ID mismatch.  This program must be run as user 'www'\n");
                    652: 	my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
                    653: 	my $subj="LON: $perlvar{'lonHostID'} User ID mismatch";
                    654: 	system("echo 'User ID mismatch.  loncron must be run as user www.' |\
                    655:  mailto $emailto -s '$subj' > /dev/null");
                    656: 	exit 1;
                    657:     }
                    658: 
                    659: # ------------------------------------------------------------- Read hosts file
                    660:     my $config=IO::File->new("$perlvar{'lonTabDir'}/hosts.tab");
                    661:     
                    662:     my (%hostname,%hostdom,%hostrole,%spareid);
                    663:     while (my $configline=<$config>) {
1.49      albertel  664: 	next if ($configline =~ /^(\#|\s*\$)/);
1.56      albertel  665: 	my ($id,$domain,$role,$name)=split(/:/,$configline);
                    666: 	if ($id && $domain && $role && $name) {
                    667: 	    $name=~s/\s//g;
1.46      albertel  668: 	    $hostname{$id}=$name;
                    669: 	    $hostdom{$id}=$domain;
                    670: 	    $hostrole{$id}=$role;
                    671: 	}
                    672:     }
                    673:     undef $config;
                    674: 
                    675: # ------------------------------------------------------ Read spare server file
                    676:     $config=IO::File->new("$perlvar{'lonTabDir'}/spare.tab");
                    677:     
                    678:     while (my $configline=<$config>) {
                    679: 	chomp($configline);
                    680: 	if (($configline) && ($configline ne $perlvar{'lonHostID'})) {
                    681: 	    $spareid{$configline}=1;
                    682: 	}
                    683:     }
                    684:     undef $config;
                    685: 
                    686: # ---------------------------------------------------------------- Start report
                    687: 
                    688:     $errors=0;
                    689:     $warnings=0;
                    690:     $notices=0;
                    691: 
                    692: 	
1.49      albertel  693:     my $fh;
1.59      albertel  694:     if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1.49      albertel  695: 	$fh=&start_logging(\%hostdom,\%hostrole,\%hostname,\%spareid);
                    696: 
                    697: 	&log_machine_info($fh);
                    698: 	&clean_tmp($fh);
                    699: 	&clean_lonIDs($fh);
                    700: 	&check_httpd_logs($fh);
                    701: 	&rotate_lonnet_logs($fh);
                    702:     }
1.59      albertel  703:     if (!$justcheckconnections && !$justreload) {
1.49      albertel  704: 	&checkon_daemon($fh,'lonsql',200000);
1.63      albertel  705: 	if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
                    706: 	    &checkon_daemon($fh,'lond',40000,'USR2');
                    707: 	}
1.50      albertel  708: 	my $args='new';
                    709: 	if ($oldlonc) { $args = ''; }
1.67    ! albertel  710: 	&checkon_daemon($fh,'lonc',40000,'USR1',$args);
1.49      albertel  711: 	&checkon_daemon($fh,'lonhttpd',40000);
1.57      albertel  712: 	&checkon_daemon($fh,'lonmemcached',40000);
1.49      albertel  713:     }
1.59      albertel  714:     if ($justreload) {
                    715: 	&checkon_daemon($fh,'lond',40000,'USR2');
                    716: 	my $args='new';
                    717: 	if ($oldlonc) { $args = ''; }
                    718: 	&checkon_daemon($fh,'lonc',40000,'USR2',$args);
                    719:     }
1.63      albertel  720:     if ($justcheckconnections) {
1.49      albertel  721: 	&test_connections($fh,\%hostname);
                    722:     }
1.59      albertel  723:     if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
1.49      albertel  724: 	&check_delayed_msg($fh);
                    725: 	&finish_logging($fh);
                    726: 	&log_simplestatus();
                    727: 	
                    728: 	if ($totalcount>200 && !$noemail) { &send_mail(); }
                    729:     }
1.46      albertel  730: }
                    731: 
                    732: &main();
1.1       albertel  733: 1;
                    734: 
                    735: 
                    736: 
                    737: 
                    738: 
                    739: 
                    740: 
                    741: 

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