--- loncom/loncron 2000/12/08 22:08:57 1.8 +++ loncom/loncron 2013/02/02 14:42:01 1.97 @@ -1,607 +1,946 @@ #!/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 1.97 2013/02/02 14:42:01 raeburn Exp $ # -# 7/14,7/15,7/19,7/21,7/22,11/18, -# 2/8 Gerd Kortemeyer +# 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/ +# + +$|=1; +use strict; + +use lib '/home/httpd/lib/perl/'; +use LONCAPA::Configuration; +use LONCAPA::Checksumming; +use LONCAPA; +use Apache::lonnet; +use Apache::loncommon; use IO::File; use IO::Socket; +use HTML::Entities; +use Getopt::Long; +#globals +use vars qw (%perlvar %simplestatus $errors $warnings $notices $totalcount); + +my $statusdir="/home/httpd/html/lon-status"; -# -------------------------------------------------- Non-critical communication -sub reply { - my ($cmd,$server)=@_; - my $peerfile="$perlvar{'lonSockDir'}/$server"; - my $client=IO::Socket::UNIX->new(Peer =>"$peerfile", - Type => SOCK_STREAM, - Timeout => 10) - or return "con_lost"; - print $client "$cmd\n"; - my $answer=<$client>; - chomp($answer); - if (!$answer) { $answer="con_lost"; } - return $answer; -} # --------------------------------------------------------- Output error status +sub log { + my $fh=shift; + if ($fh) { print $fh @_ } +} + sub errout { my $fh=shift; - print $fh (< + &log($fh,(< -
Notices$notices
Warnings$warnings
Errors$errors

Top

+

Top

ENDERROUT } -# ================================================================ Main Program - +sub rotate_logfile { + my ($file,$fh,$description) = @_; + my $size=(stat($file))[7]; + if ($size>40000) { + &log($fh,"

Rotating $description ...

"); + rename("$file.2","$file.3"); + rename("$file.1","$file.2"); + rename("$file","$file.1"); + } +} -# ------------------------------------------------------------ Read access.conf -{ - my $config=IO::File->new("/etc/httpd/conf/access.conf"); - - while (my $configline=<$config>) { - if ($configline =~ /PerlSetVar/) { - my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); - $perlvar{$varname}=$varvalue; - } +sub start_daemon { + my ($fh,$daemon,$pidfile,$args) = @_; + my $progname=$daemon; + if ($daemon eq 'lonc') { + $progname='loncnew'; } + my $error_fname="$perlvar{'lonDaemons'}/logs/${daemon}_errors"; + &rotate_logfile($error_fname,$fh,'error logs'); + if ($daemon eq 'lonc') { + &clean_sockets($fh); + } + system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors"); + sleep 1; + if (-e $pidfile) { + &log($fh,"

Seems like it started ...

"); + my $lfh=IO::File->new("$pidfile"); + my $daemonpid=<$lfh>; + chomp($daemonpid); + if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) { + return 1; + } else { + return 0; + } + } + &log($fh,"

Seems like that did not work!

"); + $errors++; + return 0; } -# ------------------------------------------------------------- Read hosts file -{ - my $config=IO::File->new("$perlvar{'lonTabDir'}/hosts.tab"); - - while (my $configline=<$config>) { - my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); - $hostname{$id}=$name; - $hostdom{$id}=$domain; - $hostrole{$id}=$role; - $hostip{$id}=$ip; - if (($role eq 'library') && ($id ne $perlvar{'lonHostID'})) { - $libserv{$id}=$name; - } +sub checkon_daemon { + my ($fh,$daemon,$maxsize,$send,$args)=@_; + + 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 $line=) { + &log($fh,"$line"); + if ($line=~/INFO/) { $notices++; } + if ($line=~/WARNING/) { $notices++; } + if ($line=~/CRITICAL/) { $warnings++; } + }; + close (DFH); } -} + &log($fh,"

"); + + my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid"; + + my $restartflag=1; + my $daemonpid; + if (-e $pidfile) { + my $lfh=IO::File->new("$pidfile"); + $daemonpid=<$lfh>; + chomp($daemonpid); + if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) { + &log($fh,"

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

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

$daemon at pid $daemonpid not responding

"); + $restartflag=1; + &log($fh,"

Decided to clean up stale .pid file and restart $daemon

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

$daemon not running, trying to start

"); + + 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 ...

"); + print " "; + 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

"); + } + } -# ------------------------------------------------------ Read spare server file -{ - my $config=IO::File->new("$perlvar{'lonTabDir'}/spare.tab"); - - while (my $configline=<$config>) { - chomp($configline); - if (($configline) && ($configline ne $perlvar{'lonHostID'})) { - $spareid{$configline}=1; - } + if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){ + &log($fh,"

");
+	    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/$daemon.log|");
+	    while (my $line=) { 
+		&log($fh,"$line");
+		if ($line=~/WARNING/) { $notices++; }
+		if ($line=~/CRITICAL/) { $notices++; }
+	    };
+	    close (DFH);
+	    &log($fh,"

"); + } } + + my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log"; + &rotate_logfile($fname,$fh,'logs'); + + &errout($fh); + return $result; } -# ---------------------------------------------------------------- Start report +# --------------------------------------------------------------------- Machine +sub log_machine_info { + my ($fh)=@_; + &log($fh,'

Machine Information

'); + &log($fh,"

loadavg

"); + + open (LOADAVGH,"/proc/loadavg"); + my $loadavg=; + close (LOADAVGH); + + &log($fh,"$loadavg"); + + my @parts=split(/\s+/,$loadavg); + if ($parts[1]>4.0) { + $errors++; + } elsif ($parts[1]>2.0) { + $warnings++; + } elsif ($parts[1]>1.0) { + $notices++; + } + + &log($fh,"

df

"); + &log($fh,"
");
 
-$statusdir="/home/httpd/html/lon-status";
+    open (DFH,"df|");
+    while (my $line=) { 
+	&log($fh,&encode_entities($line,'<>&"')); 
+	@parts=split(/\s+/,$line);
+	my $usage=$parts[4];
+	$usage=~s/\W//g;
+	if ($usage>90) { 
+	    $warnings++;
+	    $notices++; 
+	} elsif ($usage>80) {
+	    $warnings++;
+	} elsif ($usage>60) {
+	    $notices++;
+	}
+	if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
+    }
+    close (DFH);
+    &log($fh,"
"); + + + &log($fh,"

ps

"); + &log($fh,"
");
+    my $psproc=0;
+
+    open (PSH,"ps aux --cols 140 |");
+    while (my $line=) { 
+	&log($fh,&encode_entities($line,'<>&"')); 
+	$psproc++;
+    }
+    close (PSH);
+    &log($fh,"
"); + + if ($psproc>200) { $notices++; } + if ($psproc>250) { $notices++; } -$errors=0; -$warnings=0; -$notices=0; + &log($fh,"

distprobe

"); + &log($fh,"
");
+    &get_distro($perlvar{'lonDaemons'},$fh);
+    &log($fh,"
"); -$now=time; -$date=localtime($now); + &errout($fh); +} -{ -my $fh=IO::File->new(">$statusdir/newstatus.html"); +sub start_logging { + my $fh=IO::File->new(">$statusdir/newstatus.html"); + my %simplestatus=(); + my $now=time; + my $date=localtime($now); + -print $fh (< LON Status Report $perlvar{'lonHostID'} - +

LON Status Report $perlvar{'lonHostID'}

$date ($now)

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

Configuration

PerlVars

- +
ENDHEADERS -foreach $varname (keys %perlvar) { - print $fh "\n"; -} -print $fh "
$varname$perlvar{$varname}

Hosts

"; -foreach $id (keys %hostname) { -print $fh - ""; -print $fh "\n"; -} -print $fh "
$id$hostdom{$id}$hostrole{$id}$hostname{$id}$hostip{$id}

Spare Hosts

    "; -foreach $id (keys %spareid) { - print $fh "
  1. $id\n"; + foreach my $varname (sort(keys(%perlvar))) { + &log($fh,"$varname". + &encode_entities($perlvar{$varname},'<>&"')."\n"); + } + &log($fh,"

    Hosts

    "); + my %hostname = &Apache::lonnet::all_hostnames(); + foreach my $id (sort(keys(%hostname))) { + my $role = (&Apache::lonnet::is_library($id) ? 'library' + : 'access'); + &log($fh, + "\n"); + } + &log($fh,"
    $id".&Apache::lonnet::host_domain($id). + "".$role. + "".&Apache::lonnet::hostname($id)."

    Spare Hosts

      "); + foreach my $type (sort(keys(%Apache::lonnet::spareid))) { + &log($fh,"
    • $type\n
        "); + foreach my $id (@{ $Apache::lonnet::spareid{$type} }) { + &log($fh,"
      1. $id
        2. \n"); + } + &log($fh,"
      \n
      • \n"); + } + &log($fh,"
    \n"); + return $fh; } -print $fh "
\n"; +# --------------------------------------------------------------- clean out tmp +sub clean_tmp { + my ($fh)=@_; + &log($fh,'

Temporary Files

'); + my ($cleaned,$old,$removed) = (0,0,0); + my %errors = ( + dir => [], + file => [], + failopen => [], + ); + my %error_titles = ( + dir => 'failed to remove empty directory:', + file => 'failed to unlike stale file', + failopen => 'failed to open file or directory' + ); + ($cleaned,$old,$removed) = &recursive_clean_tmp('',$cleaned,$old,$removed,\%errors); + &log($fh,"Cleaned up: ".$cleaned." files; removed: $removed empty directories; (found: $old old checkout tokens)"); + foreach my $key (sort(keys(%errors))) { + if (ref($errors{$key}) eq 'ARRAY') { + if (@{$errors{$key}} > 0) { + &log($fh,"Error during cleanup ($error_titles{$key}):
'); + } + } + } +} -# --------------------------------------------------------------------- Machine +sub recursive_clean_tmp { + my ($subdir,$cleaned,$old,$removed,$errors) = @_; + my $base = "$perlvar{'lonDaemons'}/tmp"; + my $path = $base; + next if ($subdir =~ m{\.\./}); + next unless (ref($errors) eq 'HASH'); + unless ($subdir eq '') { + $path .= '/'.$subdir; + } + if (opendir(my $dh,"$path")) { + while (my $file = readdir($dh)) { + next if ($file =~ /^\.\.?$/); + my $fname = "$path/$file"; + if (-d $fname) { + my $innerdir; + if ($subdir eq '') { + $innerdir = $file; + } else { + $innerdir = $subdir.'/'.$file; + } + ($cleaned,$old,$removed) = + &recursive_clean_tmp($innerdir,$cleaned,$old,$removed,$errors); + my @doms = &Apache::lonnet::current_machine_domains(); + + if (open(my $dirhandle,$fname)) { + unless (($innerdir eq 'helprequests') || + (($innerdir =~ /^addcourse/) && ($innerdir !~ m{/\d+$}))) { + my @contents = grep {!/^\.\.?$/} readdir($dirhandle); + join('&&',@contents)."\n"; + if (scalar(grep {!/^\.\.?$/} readdir($dirhandle)) == 0) { + closedir($dirhandle); + if ($fname =~ m{^\Q$perlvar{'lonDaemons'}\E/tmp/}) { + if (rmdir($fname)) { + $removed ++; + } elsif (ref($errors->{dir}) eq 'ARRAY') { + push(@{$errors->{dir}},$fname); + } + } + } + } else { + closedir($dirhandle); + } + } + } else { + my ($dev,$ino,$mode,$nlink, + $uid,$gid,$rdev,$size, + $atime,$mtime,$ctime, + $blksize,$blocks)=stat($fname); + my $now=time; + my $since=$now-$mtime; + if ($since>$perlvar{'lonExpire'}) { + if ($subdir eq '') { + my $line=''; + if ($fname =~ /\.db$/) { + if (unlink($fname)) { + $cleaned++; + } elsif (ref($errors->{file}) eq 'ARRAY') { + push(@{$errors->{file}},$fname); + } + } elsif (open(PROBE,$fname)) { + my $line=''; + $line=; + close(PROBE); + if ($line=~/^CHECKOUTTOKEN\&/) { + if ($since>365*$perlvar{'lonExpire'}) { + if (unlink($fname)) { + $cleaned++; + } elsif (ref($errors->{file}) eq 'ARRAY') { + push(@{$errors->{file}},$fname); + } + } else { + $old++; + } + } else { + if (unlink($fname)) { + $cleaned++; + } elsif (ref($errors->{file}) eq 'ARRAY') { + push(@{$errors->{file}},$fname); + } + } + } elsif (ref($errors->{failopen}) eq 'ARRAY') { + push(@{$errors->{failopen}},$fname); + } + } else { + if (unlink($fname)) { + $cleaned++; + } elsif (ref($errors->{file}) eq 'ARRAY') { + push(@{$errors->{file}},$fname); + } + } + } + } + } + closedir($dh); + } elsif (ref($errors->{failopen}) eq 'ARRAY') { + push(@{$errors->{failopen}},$path); + } + return ($cleaned,$old,$removed); +} -print $fh '

Machine Information

'; -print $fh "

loadavg

"; +# ------------------------------------------------------------ clean out lonIDs +sub clean_lonIDs { + my ($fh)=@_; + &log($fh,'

Session Tokens

'); + my $cleaned=0; + my $active=0; + while (my $fname=<$perlvar{'lonIDsDir'}/*>) { + my ($dev,$ino,$mode,$nlink, + $uid,$gid,$rdev,$size, + $atime,$mtime,$ctime, + $blksize,$blocks)=stat($fname); + my $now=time; + my $since=$now-$mtime; + if ($since>$perlvar{'lonExpire'}) { + $cleaned++; + &log($fh,"Unlinking $fname
"); + unlink("$fname"); + } else { + $active++; + } + } + &log($fh,"

Cleaned up ".$cleaned." stale session token(s).

"); + &log($fh,"

$active open session(s)

"); +} -open (LOADAVGH,"/proc/loadavg"); -$loadavg=; -close (LOADAVGH); +# ----------------------------------------------------------- clean out sockets +sub clean_sockets { + my ($fh)=@_; + my $cleaned=0; + opendir(SOCKETS,$perlvar{'lonSockDir'}); + while (my $fname=readdir(SOCKETS)) { + next if (-d $fname + || $fname=~/(mysqlsock|maximasock|rsock|\Q$perlvar{'lonSockDir'}\E)/); + $cleaned++; + &log($fh,"Unlinking $fname
"); + unlink("/home/httpd/sockets/$fname"); + } + &log($fh,"

Cleaned up ".$cleaned." stale sockets.

"); +} -print $fh "$loadavg"; -@parts=split(/\s+/,$loadavg); -if ($parts[1]>4.0) { - $errors++; -} elsif ($parts[1]>2.0) { - $warnings++; -} elsif ($parts[1]>1.0) { - $notices++; -} - -print $fh "

df

"; -print $fh "
";
-
-open (DFH,"df|");
-while ($line=) { 
-   print $fh "$line"; 
-   @parts=split(/\s+/,$line);
-   $usage=$parts[4];
-   $usage=~s/\W//g;
-   if ($usage>90) { 
-      $warnings++; 
-   } elsif ($usage>80) {
-      $warnings++;
-   } elsif ($usage>60) {
-      $notices++;
-   }
-   if ($usage>95) { $warnings++; $warnings++ }
-}
-close (DFH);
-print $fh "
"; -&errout($fh); # ----------------------------------------------------------------------- httpd +sub check_httpd_logs { + my ($fh)=@_; + if (open(PIPE,"./lchttpdlogs|")) { + while (my $line=) { + &log($fh,$line); + if ($line=~/\[error\]/) { $notices++; } + } + close(PIPE); + } + &errout($fh); +} -print $fh '

httpd

Access Log

';
-
-open (DFH,"tail -n40 /etc/httpd/logs/access_log|");
-while ($line=) { print $fh "$line" };
-close (DFH);
-
-print $fh "

Error Log

";
-
-open (DFH,"tail -n50 /etc/httpd/logs/error_log|");
-while ($line=) { 
-   print $fh "$line";
-   if ($line=~/\[error\]/) { $notices++; } 
-};
-close (DFH);
-print $fh "
"; -&errout($fh); +# ---------------------------------------------------------------------- lonnet +sub rotate_lonnet_logs { + my ($fh)=@_; + &log($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,&encode_entities($line,'<>&"'));
+	}
+	close (DFH);
+    }
+    &log($fh,"

Perm Log

");
+    
+    if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
+	open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|");
+	while (my $line=) { 
+	    &log($fh,&encode_entities($line,'<>&"'));
+	}
+	close (DFH);
+    } else { &log($fh,"No perm log\n") }
 
-# ------------------------------------------------------------------------ lonsql
+    my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
+    &rotate_logfile($fname,$fh,'lonnet log');
 
-if ($perlvar{'lonRole'} eq "library" && 1==0) {
+    &log($fh,"
"); + &errout($fh); +} - print $fh '

lonsql

Log

';
-    
-    if (-e "$perlvar{'lonDaemons'}/logs/lonsql.log"){
-	open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lonsql.log|");
-	while ($line=) { 
-	    print $fh "$line";
-	    if ($line=~/INFO/) { $notices++; }
-	    if ($line=~/WARNING/) { $notices++; }
-	    if ($line=~/CRITICAL/) { $warnings++; }
-	};
-	close (DFH);
+sub rotate_other_logs {
+    my ($fh) = @_;
+    my %logs = (
+                  autoenroll          => 'Auto Enroll log',
+                  autocreate          => 'Create Course log',
+                  searchcat           => 'Search Cataloguing log',
+                  autoupdate          => 'Auto Update log',
+                  refreshcourseids_db => 'Refresh CourseIDs db log',
+               );
+    foreach my $item (keys(%logs)) {
+        my $fname=$perlvar{'lonDaemons'}.'/logs/'.$item.'.log';
+        &rotate_logfile($fname,$fh,$logs{$item});
     }
-    print $fh "
"; - - my $lonsqlfile="$perlvar{'lonDaemons'}/logs/lonsql.pid"; - - if (-e $lonsqlfile) { - my $lfh=IO::File->new("$lonsqlfile"); - my $lonsqlpid=<$lfh>; - chomp($lonsqlpid); - if (kill 0 => $lonsqlpid) { - print $fh "

lonsql at pid $lonsqlpid responding

"; +} + +# ----------------------------------------------------------------- Connections +sub test_connections { + my ($fh)=@_; + &log($fh,'

Connections

'); + print "testing connections\n"; + &log($fh,""); + my ($good,$bad)=(0,0); + my %hostname = &Apache::lonnet::all_hostnames(); + foreach my $tryserver (sort(keys(%hostname))) { + print("."); + my $result; + my $answer=&Apache::lonnet::reply("ping",$tryserver); + if ($answer eq "$tryserver:$perlvar{'lonHostID'}") { + $result="ok"; + $good++; } else { - $errors++; $errors++; - print $fh "

lonsql at pid $lonsqlpid not responding

"; - } - } else { - $errors++; - print $fh "

lonsql not running, trying to start

"; - system("$perlvar{'lonDaemons'}/lonsql"); - sleep 120; - if (-e $lonsqlfile) { - print $fh "Seems like it started ...

"; - my $lfh=IO::File->new("$lonsqlfile"); - my $lonsqlpid=<$lfh>; - chomp($lonsqlpid); - sleep 30; - if (kill 0 => $lonsqlpid) { - print $fh "

lonsql at pid $lonsqlpid responding

"; + $result=$answer; + $warnings++; + if ($answer eq 'con_lost') { + $bad++; + $warnings++; } else { - $errors++; $errors++; - print $fh "

lonsql at pid $lonsqlpid not responding

"; - print $fh "Give it one more try ...

"; - system("$perlvar{'lonDaemons'}/lonsql"); - sleep 120; + $good++; #self connection } - } else { - print $fh "Seems like that did not work!

"; - $errors++; - } - if (-e "$perlvar{'lonDaemons'}/logs/lonsql.log"){ - print $fh "

";
-	    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lonsql.log|");
-	    while ($line=) { 
-		print $fh "$line";
-		if ($line=~/WARNING/) { $notices++; }
-		if ($line=~/CRITICAL/) { $notices++; }
-	    };
-	    close (DFH);
-	    print $fh "
"; } + if ($answer =~ /con_lost/) { print(" $tryserver down\n"); } + &log($fh,"\n"); } + &log($fh,"
$tryserver$result
"); + print "\n$good good, $bad bad connections\n"; + &errout($fh); +} - $fname="$perlvar{'lonDaemons'}/logs/lonsql.log"; - my ($dev,$ino,$mode,$nlink, - $uid,$gid,$rdev,$size, - $atime,$mtime,$ctime, - $blksize,$blocks)=stat($fname); +# ------------------------------------------------------------ Delayed messages +sub check_delayed_msg { + my ($fh)=@_; + &log($fh,'

Delayed Messages

'); + print "checking buffers\n"; + + &log($fh,'

Scanning Permanent Log

'); - if ($size>40000) { - print $fh "Rotating logs ...

"; - rename("$fname.2","$fname.3"); - rename("$fname.1","$fname.2"); - rename("$fname","$fname.1"); - } + my $unsend=0; - &errout($fh); -} -# ------------------------------------------------------------------------ lond + my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log"); + while (my $line=<$dfh>) { + my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line); + if ($sdf eq 'F') { + my $local=localtime($time); + &log($fh,"Failed: $time, $dserv, $dcmd
"); + $warnings++; + } + if ($sdf eq 'S') { $unsend--; } + if ($sdf eq 'D') { $unsend++; } + } -print $fh '

lond

Log

';
+    &log($fh,"
Total unsend messages: $unsend
\n");
+    if ($unsend > 0) {
+        $warnings=$warnings+5*$unsend;
+    }
 
-if (-e "$perlvar{'lonDaemons'}/logs/lond.log"){
-open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lond.log|");
-while ($line=) { 
-   print $fh "$line";
-   if ($line=~/INFO/) { $notices++; }
-   if ($line=~/WARNING/) { $notices++; }
-   if ($line=~/CRITICAL/) { $warnings++; }
-};
-close (DFH);
-}
-print $fh "
"; - -my $londfile="$perlvar{'lonDaemons'}/logs/lond.pid"; - -my $restartflag=1; -if (-e $londfile) { - my $lfh=IO::File->new("$londfile"); - my $londpid=<$lfh>; - chomp($londpid); - if (kill 0 => $londpid) { - print $fh "

lond at pid $londpid responding

"; - $restartflag=0; - } else { - $errors++; - print $fh "

lond at pid $londpid not responding

"; - # Intelligently handle this. - # Possibility #1: there is no process - # Solution: remove .pid file and restart - if (getpgrp($londpid)==-1) { - unlink($londfile); - $restartflag=1; - } - else { - # Possibility #2: there is a zombie process - # Possibility #3: there is a live process that is not responding - # for an unknown reason - # Solution: kill process, remove .pid and restart - kill 2 => $londpid; - unlink($londfile); - $restartflag=1; - } - print $fh - "

Deciding to clean up stale .pid file and restart lond

"; - } -} -if ($restartflag==1) { - $errors++; - print $fh "

lond not running, trying to start

"; - system("$perlvar{'lonDaemons'}/lond"); - sleep 120; - if (-e $londfile) { - print $fh "Seems like it started ...

"; - my $lfh=IO::File->new("$londfile"); - my $londpid=<$lfh>; - chomp($londpid); - sleep 30; - if (kill 0 => $londpid) { - print $fh "

lond at pid $londpid responding

"; - } else { - $errors++; $errors++; - print $fh "

lond at pid $londpid not responding

"; - print $fh "Give it one more try ...

"; - system("$perlvar{'lonDaemons'}/lond"); - sleep 120; - } - } else { - print $fh "Seems like that did not work!

"; - $errors++; - } - if (-e "$perlvar{'lonDaemons'}/logs/lond.log"){ - print $fh "

";
-    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lond.log|");
-    while ($line=) { 
-      print $fh "$line";
-      if ($line=~/WARNING/) { $notices++; }
-      if ($line=~/CRITICAL/) { $notices++; }
-    };
+    if ($unsend) { $simplestatus{'unsend'}=$unsend; }
+    &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 $line=) {
+        my ($server)=($line=~/\.(\w+)$/);
+        if ($server) { $servers{$server}=1; }
+	&log($fh,&encode_entities($line,'<>&"'));
+    }
+    &log($fh,"
\n");
     close (DFH);
-    print $fh "
"; - } + my %hostname = &Apache::lonnet::all_hostnames(); + my $numhosts = scalar(keys(%hostname)); +# pong to all servers that have delayed messages +# this will trigger a reverse connection, which should flush the buffers + foreach my $tryserver (sort(keys(%servers))) { + if ($hostname{$tryserver} || !$numhosts) { + my $answer; + eval { + local $SIG{ ALRM } = sub { die "TIMEOUT" }; + alarm(20); + $answer = &Apache::lonnet::reply("pong",$tryserver); + alarm(0); + }; + if ($@ && $@ =~ m/TIMEOUT/) { + &log($fh,"Attempted pong to $tryserver timed out
"); + print "time out while contacting: $tryserver for pong\n"; + } else { + &log($fh,"Pong to $tryserver: $answer
"); + } + } else { + &log($fh,"$tryserver has delayed messages, but is not part of the cluster -- skipping 'Pong'.
"); + } + } } -$fname="$perlvar{'lonDaemons'}/logs/lond.log"; - - my ($dev,$ino,$mode,$nlink, - $uid,$gid,$rdev,$size, - $atime,$mtime,$ctime, - $blksize,$blocks)=stat($fname); - -if ($size>40000) { - print $fh "Rotating logs ...

"; - rename("$fname.2","$fname.3"); - rename("$fname.1","$fname.2"); - rename("$fname","$fname.1"); -} - -&errout($fh); -# ------------------------------------------------------------------------ lonc - -print $fh '

lonc

Log

';
-
-if (-e "$perlvar{'lonDaemons'}/logs/lonc.log"){
-open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lonc.log|");
-while ($line=) { 
-   print $fh "$line";
-   if ($line=~/INFO/) { $notices++; }
-   if ($line=~/WARNING/) { $notices++; }
-   if ($line=~/CRITICAL/) { $warnings++; }
-};
-close (DFH);
-}
-print $fh "
"; - -my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid"; - -$restartflag=1; -if (-e $loncfile) { - my $lfh=IO::File->new("$loncfile"); - my $loncpid=<$lfh>; - chomp($loncpid); - if (kill 0 => $loncpid) { - print $fh "

lonc at pid $loncpid responding, sending USR1

"; - kill USR1 => $loncpid; - $restartflag=0; - } else { - $errors++; - print $fh "

lonc at pid $loncpid not responding

"; - # Intelligently handle this. - # Possibility #1: there is no process - # Solution: remove .pid file and restart - if (getpgrp($loncpid)==-1) { - unlink($loncfile); - $restartflag=1; - } - else { - # Possibility #2: there is a zombie process - # Possibility #3: there is a live process that is not responding - # for an unknown reason - # Solution: kill process, remove .pid and restart - kill 2 => $loncpid; - unlink($loncfile); - $restartflag=1; - } - print $fh - "

Deciding to clean up stale .pid file and restart lonc

"; - } -} -if ($restartflag==1) { - $errors++; - print $fh "

lonc not running, trying to start

"; - system("$perlvar{'lonDaemons'}/lonc"); - sleep 120; - if (-e $loncfile) { - print $fh "Seems like it started ...

"; - my $lfh=IO::File->new("$loncfile"); - my $loncpid=<$lfh>; - chomp($loncpid); - sleep 30; - if (kill 0 => $loncpid) { - print $fh "

lonc at pid $loncpid responding

"; - } else { - $errors++; $errors++; - print $fh "

lonc at pid $loncpid not responding

"; - print $fh "Give it one more try ...

"; - system("$perlvar{'lonDaemons'}/lonc"); - sleep 120; - } - } else { - print $fh "Seems like that did not work!

"; - $errors++; - } - if (-e "$perlvar{'lonDaemons'}/logs/lonc.log") { - print $fh "

";
-    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lonc.log|");
-    while ($line=) { 
-      print $fh "$line";
-      if ($line=~/WARNING/) { $notices++; }
-      if ($line=~/CRITICAL/) { $notices++; }
-    };
-    close (DFH);
-    print $fh "
"; - } +sub finish_logging { + my ($fh)=@_; + &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"); + print "lon-status webpage updated\n"; + $fh->close(); + + if ($errors) { $simplestatus{'errors'}=$errors; } + if ($warnings) { $simplestatus{'warnings'}=$warnings; } + if ($notices) { $simplestatus{'notices'}=$notices; } + $simplestatus{'time'}=time; } -$fname="$perlvar{'lonDaemons'}/logs/lonc.log"; - - my ($dev,$ino,$mode,$nlink, - $uid,$gid,$rdev,$size, - $atime,$mtime,$ctime, - $blksize,$blocks)=stat($fname); - -if ($size>40000) { - print $fh "Rotating logs ...

"; - rename("$fname.2","$fname.3"); - rename("$fname.1","$fname.2"); - rename("$fname","$fname.1"); +sub log_simplestatus { + rename("$statusdir/newstatus.html","$statusdir/index.html"); + + my $sfh=IO::File->new(">$statusdir/loncron_simple.txt"); + foreach (keys %simplestatus) { + print $sfh $_.'='.$simplestatus{$_}.'&'; + } + print $sfh "\n"; + $sfh->close(); } - -&errout($fh); -# ---------------------------------------------------------------------- lonnet - -print $fh '

lonnet

Temp Log

';
-if (-e "$perlvar{'lonDaemons'}/logs/lonnet.log"){
-open (DFH,"tail -n50 $perlvar{'lonDaemons'}/logs/lonnet.log|");
-while ($line=) { 
-    print $fh "$line";
-};
-close (DFH);
-}
-print $fh "

Perm Log

"; - -if (-e "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") { - open(DFH,"tail -n10 $perlvar{'lonDaemons'}/logs/lonnet.perm.log|"); -while ($line=) { - print $fh "$line"; -}; -close (DFH); -} else { print $fh "No perm log\n" } - -$fname="$perlvar{'lonDaemons'}/logs/lonnet.log"; - - my ($dev,$ino,$mode,$nlink, - $uid,$gid,$rdev,$size, - $atime,$mtime,$ctime, - $blksize,$blocks)=stat($fname); - -if ($size>40000) { - print $fh "Rotating logs ...

"; - rename("$fname.2","$fname.3"); - rename("$fname.1","$fname.2"); - rename("$fname","$fname.1"); +sub write_loncaparevs { + print "Retrieving LON-CAPA version information\n"; + if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) { + my %hostname = &Apache::lonnet::all_hostnames(); + foreach my $id (sort(keys(%hostname))) { + if ($id ne '') { + my $loncaparev; + eval { + local $SIG{ ALRM } = sub { die "TIMEOUT" }; + alarm(10); + $loncaparev = + &Apache::lonnet::get_server_loncaparev('',$id,1,'loncron'); + alarm(0); + }; + if ($@ && $@ =~ m/TIMEOUT/) { + print "time out while contacting lonHost: $id for version\n"; + } + if ($loncaparev =~ /^[\w.\-]+$/) { + print $fh $id.':'.$loncaparev."\n"; + } + } + } + close($fh); + } + return; } -print $fh ""; -&errout($fh); -# ----------------------------------------------------------------- Connections - -print $fh '

Connections

'; - -print $fh ""; -foreach $tryserver (keys %hostname) { - - $answer=reply("pong",$tryserver); - if ($answer eq "$tryserver:$perlvar{'lonHostID'}") { - $result="ok"; - } else { - $result=$answer; - $warnings++; - if ($answer eq 'con_lost') { $warnings++; } +sub write_serverhomeIDs { + print "Retrieving LON-CAPA lonHostID information\n"; + if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) { + my %name_to_host = &Apache::lonnet::all_names(); + foreach my $name (sort(keys(%name_to_host))) { + if ($name ne '') { + if (ref($name_to_host{$name}) eq 'ARRAY') { + my $serverhomeID; + eval { + local $SIG{ ALRM } = sub { die "TIMEOUT" }; + alarm(10); + $serverhomeID = + &Apache::lonnet::get_server_homeID($name,1,'loncron'); + alarm(0); + }; + if ($@ && $@ =~ m/TIMEOUT/) { + print "Time out while contacting server: $name\n"; + } + if ($serverhomeID ne '') { + print $fh $name.':'.$serverhomeID."\n"; + } else { + print $fh $name.':'.$name_to_host{$name}->[0]."\n"; + } + } + } + } + close($fh); } - print $fh "\n"; - + return; } -print $fh "
$tryserver$result
"; - -&errout($fh); -# ------------------------------------------------------------ Delayed messages -print $fh '

Delayed Messages

'; - -print $fh '

Scanning Permanent Log

'; - -$unsend=0; -{ - my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log"); - while ($line=<$dfh>) { - ($time,$sdf,$dserv,$dcmd)=split(/:/,$line); - if ($sdf eq 'F') { - $local=localtime($time); - print "Failed: $time, $dserv, $dcmd
"; - $warnings++; +sub write_checksums { + my $distro = &get_distro($perlvar{'lonDaemons'}); + if ($distro) { + print "Retrieving file version and checksumming.\n"; + my $numchksums = 0; + my ($chksumsref,$versionsref) = + &LONCAPA::Checksumming::get_checksums($distro,$perlvar{'lonDaemons'}, + $perlvar{'lonLib'}, + $perlvar{'lonIncludes'}, + $perlvar{'lonTabDir'}); + if (ref($chksumsref) eq 'HASH') { + $numchksums = scalar(keys(%{$chksumsref})); } - if ($sdf eq 'S') { $unsend--; } - if ($sdf eq 'D') { $unsend++; } + print "File version retrieved and checksumming completed for $numchksums files.\n"; + } else { + print "File version retrieval and checksumming skipped - could not determine Linux distro.\n"; } + return; } -print $fh "Total unsend messages: $unsend

\n"; -$warnings=$warnings+5*$unsend; - -print $fh "

Outgoing Buffer

"; - -open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|"); -while ($line=) { - print $fh "$line
"; -}; -close (DFH); -# ------------------------------------------------------------------------- End -print $fh "\n"; -$totalcount=$notices+4*$warnings+100*$errors; -&errout($fh); -print $fh "

Total Error Count: $totalcount

"; -$now=time; -$date=localtime($now); -print $fh "
$date ($now)\n"; +sub send_mail { + print "sending mail\n"; + my $defdom = $perlvar{'lonDefDomain'}; + my $origmail = $perlvar{'lonAdmEMail'}; + my $emailto = &Apache::loncommon::build_recipient_list(undef, + 'lonstatusmail',$defdom,$origmail); + if ($totalcount>2500) { + $emailto.=",$perlvar{'lonSysEMail'}"; + } + my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; + 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 < $statusdir/index.html"); + } } -rename ("$statusdir/newstatus.html","$statusdir/index.html"); - -if ($totalcount>200) { - $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; - $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; - system( - "metasend -b -t $emailto -s '$subj' -f $statusdir/index.html -m text/html"); +sub get_distro { + my ($dir,$fh) = @_; + my $distro; + if (open(my $disth,"$dir/distprobe |")) { + while (my $line=<$disth>) { + if ($fh) { + &log($fh,&encode_entities($line,'<>&"')); + } + $distro .= $line; + } + close($disth); + } + return $distro; } -1; +sub usage { + print(< \$help, + "justcheckdaemons" => \$justcheckdaemons, + "noemail" => \$noemail, + "justcheckconnections" => \$justcheckconnections, + "justreload" => \$justreload + ); + if ($help) { &usage(); return; } +# --------------------------------- Read loncapa_apache.conf and loncapa.conf + my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf'); + %perlvar=%{$perlvarref}; + undef $perlvarref; + delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed + delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed + chdir($perlvar{'lonDaemons'}); +# --------------------------------------- Make sure that LON-CAPA is configured +# I only test for one thing here (lonHostID). This is just a safeguard. + if ('{[[[[lonHostID]]]]}' eq $perlvar{'lonHostID'}) { + print("Unconfigured machine.\n"); + my $emailto=$perlvar{'lonSysEMail'}; + my $hostname=`/bin/hostname`; + chop $hostname; + $hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell + my $subj="LON: Unconfigured machine $hostname"; + system("echo 'Unconfigured machine $hostname.' |\ + mailto $emailto -s '$subj' > /dev/null"); + exit 1; + } +# ----------------------------- Make sure this process is running from user=www + my $wwwid=getpwnam('www'); + if ($wwwid!=$<) { + print("User ID mismatch. This program must be run as user 'www'\n"); + my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; + my $subj="LON: $perlvar{'lonHostID'} User ID mismatch"; + system("echo 'User ID mismatch. loncron must be run as user www.' |\ + mailto $emailto -s '$subj' > /dev/null"); + exit 1; + } +# -------------------------------------------- Force reload of host information + &Apache::lonnet::load_hosts_tab(1); + &Apache::lonnet::load_domain_tab(1); + &Apache::lonnet::get_iphost(1); + +# ----------------------------------------- Force firewall update for lond port + + if ((!$justcheckdaemons) && (!$justreload)) { + my $now = time; + my $tmpfile = $perlvar{'lonDaemons'}.'/tmp/lciptables_iphost_'. + $now.$$.int(rand(10000)); + if (open(my $fh,">$tmpfile")) { + my %iphosts = &Apache::lonnet::get_iphost(); + foreach my $key (keys(%iphosts)) { + print $fh "$key\n"; + } + close($fh); + if (&LONCAPA::try_to_lock('/tmp/lock_lciptables')) { + my $execpath = $perlvar{'lonDaemons'}.'/lciptables'; + system("$execpath $tmpfile"); + unlink('/tmp/lock_lciptables'); # Remove the lock file. + } + unlink($tmpfile); + } + } +# ---------------------------------------------------------------- Start report + $errors=0; + $warnings=0; + $notices=0; + + + my $fh; + if (!$justcheckdaemons && !$justcheckconnections && !$justreload) { + $fh=&start_logging(); + + &log_machine_info($fh); + &clean_tmp($fh); + &clean_lonIDs($fh); + &check_httpd_logs($fh); + &rotate_lonnet_logs($fh); + &rotate_other_logs($fh); + } + if (!$justcheckconnections && !$justreload) { + &checkon_daemon($fh,'lonmemcached',40000); + &checkon_daemon($fh,'lonsql',200000); + if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') { + &checkon_daemon($fh,'lond',40000,'USR2'); + } + &checkon_daemon($fh,'lonc',40000,'USR1'); + &checkon_daemon($fh,'lonmaxima',40000); + &checkon_daemon($fh,'lonr',40000); + } + if ($justreload) { + &checkon_daemon($fh,'lond',40000,'USR2'); + &checkon_daemon($fh,'lonc',40000,'USR2'); + } + if ($justcheckconnections) { + &test_connections($fh); + } + if (!$justcheckdaemons && !$justcheckconnections && !$justreload) { + &check_delayed_msg($fh); + &finish_logging($fh); + &log_simplestatus(); + &write_loncaparevs(); + &write_serverhomeIDs(); + &write_checksums(); + if ($totalcount>200 && !$noemail) { &send_mail(); } + } +} +&main(); +1;