--- loncom/loncron 2004/05/11 19:12:50 1.46 +++ loncom/loncron 2006/11/01 21:08:06 1.69 @@ -1,26 +1,42 @@ #!/usr/bin/perl -# The LearningOnline Network -# Housekeeping program, started by cron +# Housekeeping program, started by cron, loncontrol and loncron.pl # -# (TCP networking package -# 6/1/99,6/2,6/10,6/11,6/12,6/14,6/26,6/28,6/29,6/30, -# 7/1,7/2,7/9,7/10,7/12 Gerd Kortemeyer) +# $Id: loncron,v 1.69 2006/11/01 21:08:06 www Exp $ +# +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ # -# 7/14,7/15,7/19,7/21,7/22,11/18, -# 2/8 Gerd Kortemeyer -# 12/23 Gerd Kortemeyer -# YEAR=2001 -# 09/04,09/06,11/26 Gerd Kortemeyer $|=1; +use strict; use lib '/home/httpd/lib/perl/'; use LONCAPA::Configuration; use IO::File; use IO::Socket; -use strict; +use HTML::Entities; +use Getopt::Long; #globals use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount); @@ -29,13 +45,13 @@ my $statusdir="/home/httpd/html/lon-stat # -------------------------------------------------- Non-critical communication sub reply { - my ($cmd,$server)=@_; - my $peerfile="$perlvar{'lonSockDir'}/$server"; + my ($cmd,$server,$hostname)=@_; + my $peerfile="$perlvar{'lonSockDir'}/".$hostname->{$server}; my $client=IO::Socket::UNIX->new(Peer =>"$peerfile", Type => SOCK_STREAM, Timeout => 10) or return "con_lost"; - print $client "$cmd\n"; + print $client "sethost:$server:$cmd\n"; my $answer=<$client>; chomp($answer); if (!$answer) { $answer="con_lost"; } @@ -52,45 +68,53 @@ sub log { sub errout { my $fh=shift; &log($fh,(< +
-
Notices$notices
Warnings$warnings
Errors$errors

Top

+

Top

ENDERROUT } sub start_daemon { - my ($fh,$daemon,$pidfile) = @_; + my ($fh,$daemon,$pidfile,$args) = @_; my $progname=$daemon; - if ($daemon eq 'lonc' && $ARGV[0] eq 'new') { + if ($daemon eq 'lonc' && $args eq 'new') { $progname='loncnew'; print "new "; } - system("$perlvar{'lonDaemons'}/$progname 2>>$perlvar{'lonDaemons'}/logs/${daemon}_errors"); - sleep 2; + my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors"; + my $size=(stat($error_fname))[7]; + if ($size>40000) { + &log($fh,"

Rotating error logs ...

"); + rename("$error_fname.2","$error_fname.3"); + rename("$error_fname.1","$error_fname.2"); + rename("$error_fname","$error_fname.1"); + } + system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors"); + sleep 1; if (-e $pidfile) { - &log($fh,"Seems like it started ...

"); + &log($fh,"

Seems like it started ...

"); my $lfh=IO::File->new("$pidfile"); my $daemonpid=<$lfh>; chomp($daemonpid); - sleep 2; - if (kill 0 => $daemonpid) { + if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) { return 1; } else { return 0; } } - &log($fh,"Seems like that did not work!

"); + &log($fh,"

Seems like that did not work!

"); $errors++; return 0; } sub checkon_daemon { - my ($fh,$daemon,$maxsize,$sendusr1)=@_; + my ($fh,$daemon,$maxsize,$send,$args)=@_; - &log($fh,'

'.$daemon.'

Log

');
-    printf("%-10s ",$daemon);
+    my $result;
+    &log($fh,'
'.$daemon.'
Log
');
+    printf("%-15s ",$daemon);
     if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
 	open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
 	while (my $line=) { 
@@ -101,7 +125,7 @@ sub checkon_daemon {
 	};
 	close (DFH);
     }
-    &log($fh,"
"); + &log($fh,"

"); my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid"; @@ -111,13 +135,20 @@ sub checkon_daemon { my $lfh=IO::File->new("$pidfile"); $daemonpid=<$lfh>; chomp($daemonpid); - if (kill 0 => $daemonpid) { + if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) { &log($fh,"

$daemon at pid $daemonpid responding"); - if ($sendusr1) { &log($fh,", sending USR1"); } + if ($send) { &log($fh,", sending $send"); } &log($fh,"

"); - if ($sendusr1) { kill USR1 => $daemonpid; } + if ($send eq 'USR1') { kill USR1 => $daemonpid; } + if ($send eq 'USR2') { kill USR2 => $daemonpid; } $restartflag=0; - print "running\n"; + if ($send eq 'USR2') { + $result = 'reloaded'; + print "reloaded\n"; + } else { + $result = 'running'; + print "running\n"; + } } else { $errors++; &log($fh,"

$daemon at pid $daemonpid not responding

"); @@ -128,33 +159,38 @@ sub checkon_daemon { if ($restartflag==1) { $simplestatus{$daemon}='off'; $errors++; + my $kadaemon=$daemon; + if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; } &log($fh,'
Killall '.$daemon.': '. - `killall $daemon 2>&1`.' - '); - sleep 2; + `killall $kadaemon 2>&1`.' - '); + sleep 1; &log($fh,unlink($pidfile).' - '. - `killall -9 $daemon 2>&1`. + `killall -9 $kadaemon 2>&1`. '
'); &log($fh,"

$daemon not running, trying to start

"); - if (&start_daemon($fh,$daemon,$pidfile)) { + if (&start_daemon($fh,$daemon,$pidfile,$args)) { &log($fh,"

$daemon at pid $daemonpid responding

"); $simplestatus{$daemon}='restarted'; + $result = 'started'; print "started\n"; } else { $errors++; &log($fh,"

$daemon at pid $daemonpid not responding

"); - &log($fh,"Give it one more try ...

"); + &log($fh,"

Give it one more try ...

"); print " "; - if (&start_daemon($fh,$daemon,$pidfile)) { + if (&start_daemon($fh,$daemon,$pidfile,$args)) { &log($fh,"

$daemon at pid $daemonpid responding

"); $simplestatus{$daemon}='restarted'; + $result = 'started'; print "started\n"; } else { + $result = 'failed'; print " failed\n"; $simplestatus{$daemon}='failed'; $errors++; $errors++; &log($fh,"

$daemon at pid $daemonpid not responding

"); - &log($fh,"Unable to start $daemon

"); + &log($fh,"

Unable to start $daemon

"); } } @@ -167,7 +203,7 @@ sub checkon_daemon { if ($line=~/CRITICAL/) { $notices++; } }; close (DFH); - &log($fh,""); + &log($fh,"

"); } } @@ -179,19 +215,20 @@ sub checkon_daemon { $blksize,$blocks)=stat($fname); if ($size>$maxsize) { - &log($fh,"Rotating logs ...

"); + &log($fh,"

Rotating logs ...

"); rename("$fname.2","$fname.3"); rename("$fname.1","$fname.2"); rename("$fname","$fname.1"); } &errout($fh); + return $result; } # --------------------------------------------------------------------- Machine sub log_machine_info { my ($fh)=@_; - &log($fh,'

Machine Information

'); + &log($fh,'

Machine Information

'); &log($fh,"

loadavg

"); open (LOADAVGH,"/proc/loadavg"); @@ -214,7 +251,7 @@ sub log_machine_info { open (DFH,"df|"); while (my $line=) { - &log($fh,"$line"); + &log($fh,&encode_entities($line,'<>&"')); @parts=split(/\s+/,$line); my $usage=$parts[4]; $usage=~s/\W//g; @@ -236,9 +273,9 @@ sub log_machine_info { &log($fh,"
");
     my $psproc=0;
 
-    open (PSH,"ps -aux --cols 140 |");
+    open (PSH,"ps aux --cols 140 |");
     while (my $line=) { 
-	&log($fh,"$line"); 
+	&log($fh,&encode_entities($line,'<>&"')); 
 	$psproc++;
     }
     close (PSH);
@@ -247,6 +284,16 @@ sub log_machine_info {
     if ($psproc>200) { $notices++; }
     if ($psproc>250) { $notices++; }
 
+    &log($fh,"
distprobe
");
+    &log($fh,"
");
+    open(DSH,"$perlvar{'lonDaemons'}/distprobe |");
+    while (my $line=) { 
+	&log($fh,&encode_entities($line,'<>&"')); 
+	$psproc++;
+    }
+    close(DSH);
+    &log($fh,"
");
+
     &errout($fh);
 }
 
@@ -264,35 +311,36 @@ sub start_logging {
 LON Status Report $perlvar{'lonHostID'}
 
 
-
+
 
LON Status Report $perlvar{'lonHostID'}

 
$date ($now)

 
    
-
  1. Configuration
-
  2. Machine Information
-
  3. Temporary Files
-
  4. Session Tokens
-
  5. httpd
-
  6. lonsql
-
  7. lond
-
  8. lonc
-
  9. lonhttpd
-
  10. lonnet
-
  11. Connections
-
  12. Delayed Messages
-
  13. Error Coindex.html.unt
+
  14. Configuration
    15. 
+
  15. Machine Information
    16. 
+
  16. Temporary Files
    17. 
+
  17. Session Tokens
    18. 
+
  18. httpd
    19. 
+
  19. lonsql
    20. 
+
  20. lond
    21. 
+
  21. lonc
    22. 
+
  22. lonhttpd
    23. 
+
  23. lonnet
    24. 
+
  24. Connections
    25. 
+
  25. Delayed Messages
    26. 
+
  26. Error Count
    27. 
 

-

-
+

+
 
Configuration

 
PerlVars

-
+

 ENDHEADERS
 
     foreach my $varname (sort(keys(%perlvar))) {
-	&log($fh,"\n");
+	&log($fh,"\n");
     }
-    &log($fh,"
$varname$perlvar{$varname}
$varname".
+	     &encode_entities($perlvar{$varname},'<>&"')."
Hosts
");
+    &log($fh,"
Hosts
");
     foreach my $id (sort(keys(%{$hostname}))) {
 	&log($fh,
 	    "
$id".$hostdom->{$id}.
@@ -301,7 +349,7 @@ ENDHEADERS
     }
     &log($fh,"
Spare Hosts
    ");
     foreach my $id (sort(keys(%{$spareid}))) {
-	&log($fh,"
  1. $id\n");
+	&log($fh,"
  2. $id\n
    3. ");
     }
     &log($fh,"
\n");
     return $fh;
@@ -310,7 +358,7 @@ ENDHEADERS
 # --------------------------------------------------------------- clean out tmp
 sub clean_tmp {
     my ($fh)=@_;
-    &log($fh,'
Temporary Files
');
+    &log($fh,'
Temporary Files
');
     my $cleaned=0;
     my $old=0;
     while (my $fname=<$perlvar{'lonDaemons'}/tmp/*>) {
@@ -343,7 +391,7 @@ sub clean_tmp {
 # ------------------------------------------------------------ clean out lonIDs
 sub clean_lonIDs {
     my ($fh)=@_;
-    &log($fh,'
Session Tokens
');
+    &log($fh,'
Session Tokens
');
     my $cleaned=0;
     my $active=0;
     while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
@@ -361,7 +409,7 @@ sub clean_lonIDs {
 	    $active++;
 	}
     }
-    &log($fh,"
Cleaned up ".$cleaned." stale session token(s).");
+    &log($fh,"
Cleaned up ".$cleaned." stale session token(s).
");
     &log($fh,"
$active open session(s)
");
 }
 
@@ -369,10 +417,10 @@ sub clean_lonIDs {
 # ----------------------------------------------------------------------- httpd
 sub check_httpd_logs {
     my ($fh)=@_;
-    &log($fh,'
httpd
Access Log
');
+    &log($fh,'
httpd
Access Log
');
     
     open (DFH,"tail -n25 /etc/httpd/logs/access_log|");
-    while (my $line=) { &log($fh,"$line") };
+    while (my $line=) { &log($fh,&encode_entities($line,'<>&"')) };
     close (DFH);
 	
     &log($fh,"
Error Log
");
@@ -389,14 +437,14 @@ sub check_httpd_logs {
 
 # ---------------------------------------------------------------------- lonnet
 
-sub rotate_logs {
+sub rotate_lonnet_logs {
     my ($fh)=@_;
-    &log($fh,'
lonnet
Temp Log
');
+    &log($fh,'
lonnet
Temp Log
');
     print "checking logs\n";
     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
 	open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
 	while (my $line=) { 
-	    &log($fh,"$line");
+	    &log($fh,&encode_entities($line,'<>&"'));
 	}
 	close (DFH);
     }
@@ -405,7 +453,7 @@ sub rotate_logs {
     if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
 	open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
 	while (my $line=) { 
-	    &log($fh,"$line");
+	    &log($fh,&encode_entities($line,'<>&"'));
 	}
 	close (DFH);
     } else { &log($fh,"No perm log\n") }
@@ -418,7 +466,7 @@ sub rotate_logs {
 	$blksize,$blocks)=stat($fname);
 
     if ($size>40000) {
-	&log($fh,"Rotating logs ...
");
+	&log($fh,"
Rotating logs ...
");
 	rename("$fname.2","$fname.3");
 	rename("$fname.1","$fname.2");
 	rename("$fname","$fname.1");
@@ -431,33 +479,40 @@ sub rotate_logs {
 # ----------------------------------------------------------------- Connections
 sub test_connections {
     my ($fh,$hostname)=@_;
-    &log($fh,'
Connections
');
+    &log($fh,'
Connections
');
     print "testing connections\n";
-    &log($fh,"");
+    &log($fh,"
");
+    my ($good,$bad)=(0,0);
     foreach my $tryserver (sort(keys(%{$hostname}))) {
 	print(".");
 	my $result;
-	my $answer=reply("pong",$tryserver);
+	my $answer=&reply("ping",$tryserver,$hostname);
 	if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
 	    $result="ok";
+	    $good++;
 	} else {
 	    $result=$answer;
 	    $warnings++;
-	    if ($answer eq 'con_lost') { $warnings++; }
+	    if ($answer eq 'con_lost') {
+		$bad++;
+		$warnings++;
+	    } else {
+		$good++; #self connection
+	    }
 	}
 	if ($answer =~ /con_lost/) { print(" $tryserver down\n"); }
 	&log($fh,"\n");
     }
     &log($fh,"
$tryserver$result
");
-
+    print "\n$good good, $bad bad connections\n";
     &errout($fh);
 }
 
 
 # ------------------------------------------------------------ Delayed messages
 sub check_delayed_msg {
-    my ($fh)=@_;
-    &log($fh,'
Delayed Messages
');
+    my ($fh,$hostname)=@_;
+    &log($fh,'
Delayed Messages
');
     print "checking buffers\n";
     
     &log($fh,'
Scanning Permanent Log
');
@@ -476,28 +531,38 @@ sub check_delayed_msg {
 	if ($sdf eq 'D') { $unsend++; }
     }
 
-    &log($fh,"Total unsend messages: $unsend
\n");
+    &log($fh,"
Total unsend messages: $unsend
\n");
     $warnings=$warnings+5*$unsend;
 
     if ($unsend) { $simplestatus{'unsend'}=$unsend; }
-    &log($fh,"
Outgoing Buffer
");
-
+    &log($fh,"
Outgoing Buffer
\n
");
+# list directory with delayed messages and remember offline servers
+    my %servers=();
     open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
-    while (my $line=) { 
-	&log($fh,"$line
");
+    while (my $line=) {
+        my ($server)=($line=~/\.(\w+)$/);
+        if ($server) { $servers{$server}=1; }
+	&log($fh,&encode_entities($line,'<>&"'));
     }
+    &log($fh,"
\n");
     close (DFH);
+# pong to all servers that have delayed messages
+# this will trigger a reverse connection, which should flush the buffers
+    foreach my $tryserver (keys %servers) {
+	my $answer=&reply("pong",$tryserver,$hostname);
+	&log($fh,"Pong to $tryserver: $answer
");
+    }
 }
 
 sub finish_logging {
     my ($fh)=@_;
-    &log($fh,"\n");
+    &log($fh,"\n");
     $totalcount=$notices+4*$warnings+100*$errors;
     &errout($fh);
     &log($fh,"
Total Error Count: $totalcount
");
     my $now=time;
     my $date=localtime($now);
-    &log($fh,"
$date ($now)\n");
+    &log($fh,"
$date ($now)\n");
     print "lon-status webpage updated\n";
     $fh->close();
 
@@ -521,15 +586,53 @@ sub log_simplestatus {
 sub send_mail {
     print "sending mail\n";
     my $emailto="$perlvar{'lonAdmEMail'}";
-    if ($totalcount>1000) {
+    if ($totalcount>2500) {
 	$emailto.=",$perlvar{'lonSysEMail'}";
     }
     my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; 
-    system("metasend -b -t $emailto -s '$subj' -f $statusdir/index.html -m text/html");
+
+    my $result=system("metasend -b -S 4000000 -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
+    if ($result != 0) {
+	$result=system("mail -s '$subj' $emailto < $statusdir/index.html");
+    }
+}
+
+sub usage {
+    print(< \$help,
+		"oldlonc"              => \$oldlonc,
+		"justcheckdaemons"     => \$justcheckdaemons,
+		"noemail"              => \$noemail,
+		"justcheckconnections" => \$justcheckconnections,
+		"justreload"           => \$justreload
+		);
+    if ($help) { &usage(); return; }
 # --------------------------------- Read loncapa_apache.conf and loncapa.conf
     my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
     %perlvar=%{$perlvarref};
@@ -567,15 +670,13 @@ sub main () {
     
     my (%hostname,%hostdom,%hostrole,%spareid);
     while (my $configline=<$config>) {
-	my ($id,$domain,$role,$name,$ip,$domdescr)=split(/:/,$configline);
-	if ($id && $domain && $role && $name && $ip) {
+	next if ($configline =~ /^(\#|\s*\$)/);
+	my ($id,$domain,$role,$name)=split(/:/,$configline);
+	if ($id && $domain && $role && $name) {
+	    $name=~s/\s//g;
 	    $hostname{$id}=$name;
 	    $hostdom{$id}=$domain;
 	    $hostrole{$id}=$role;
-	} else {
-	    if ($configline) {
-#		&logthis("Skipping hosts.tab line -$configline-");
-	    }
 	}
     }
     undef $config;
@@ -597,24 +698,44 @@ sub main () {
     $warnings=0;
     $notices=0;
 
-    my $fh=&start_logging(\%hostdom,\%hostrole,\%hostname,\%spareid);
-
-    &log_machine_info($fh);
-    &clean_tmp($fh);
-    &clean_lonIDs($fh);
-    &check_httpd_logs($fh);
-    &checkon_daemon($fh,'lonsql',200000);
-    &checkon_daemon($fh,'lond',40000,1);
-    &checkon_daemon($fh,'lonc',40000,1);
-    &checkon_daemon($fh,'lonhttpd',40000);
-    
-    &test_connections($fh,\%hostname);
-    &check_delayed_msg($fh);
-
-    &finish_logging($fh);
-    &log_simplestatus();
 	
-    if ($totalcount>200) { &send_mail(); }
+    my $fh;
+    if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
+	$fh=&start_logging(\%hostdom,\%hostrole,\%hostname,\%spareid);
+
+	&log_machine_info($fh);
+	&clean_tmp($fh);
+	&clean_lonIDs($fh);
+	&check_httpd_logs($fh);
+	&rotate_lonnet_logs($fh);
+    }
+    if (!$justcheckconnections && !$justreload) {
+	&checkon_daemon($fh,'lonsql',200000);
+	if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
+	    &checkon_daemon($fh,'lond',40000,'USR2');
+	}
+	my $args='new';
+	if ($oldlonc) { $args = ''; }
+	&checkon_daemon($fh,'lonc',40000,'USR1',$args);
+	&checkon_daemon($fh,'lonhttpd',40000);
+	&checkon_daemon($fh,'lonmemcached',40000);
+    }
+    if ($justreload) {
+	&checkon_daemon($fh,'lond',40000,'USR2');
+	my $args='new';
+	if ($oldlonc) { $args = ''; }
+	&checkon_daemon($fh,'lonc',40000,'USR2',$args);
+    }
+    if ($justcheckconnections) {
+	&test_connections($fh,\%hostname);
+    }
+    if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
+	&check_delayed_msg($fh,\%hostname);
+	&finish_logging($fh);
+	&log_simplestatus();
+	
+	if ($totalcount>200 && !$noemail) { &send_mail(); }
+    }
 }
 
 &main();