--- loncom/loncron 2002/05/11 21:18:14 1.26 +++ loncom/loncron 2021/02/02 21:17:47 1.103.2.11 @@ -1,708 +1,1473 @@ #!/usr/bin/perl -# The LearningOnline Network -# Housekeeping program, started by cron +# Housekeeping program, started by cron, loncontrol and loncron.pl +# +# $Id: loncron,v 1.103.2.11 2021/02/02 21:17:47 raeburn 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/ # -# (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) -# -# 7/14,7/15,7/19,7/21,7/22,11/18, -# 2/8 Gerd Kortemeyer -# 12/6/2000,12/8 Scott Harrison -# 12/23 Gerd Kortemeyer -# YEAR=2001 -# 1/10/2001, 2/12/, 2/26, 3/15, 04/11, 04/21,8/27 Scott Harrison -# 09/04,09/06,11/26 Gerd Kortemeyer -# YEAR=2002 -# 5/11/2002 Scott Harrison $|=1; +use strict; use lib '/home/httpd/lib/perl/'; use LONCAPA::Configuration; +use LONCAPA::Checksumming; +use LONCAPA; +use Apache::lonnet; +use Apache::loncommon; +use LWP::UserAgent(); +use HTTP::Request(); use IO::File; use IO::Socket; +use HTML::Entities; +use Getopt::Long; +use GDBM_File qw(GDBM_READER); +use Storable qw(thaw nfreeze); +use File::ReadBackwards; +use File::Copy; +use Sys::Hostname::FQDN(); + +#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 - -# ------------------------------------------- Read access.conf and loncapa.conf -my $perlvarref=LONCAPA::Configuration::read_conf('access.conf','loncapa.conf'); -my %perlvar=%{$perlvarref}; -undef $perlvarref; -delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed -delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed - -# --------------------------------------- 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"); - $emailto=$perlvar{'lonSysEMail'}; - $hostname=`/bin/hostname`; - chop $hostname; - $hostname=~s/[^\w\.]//g; # make sure is safe to pass through shell - $subj="LON: Unconfigured machine $hostname"; - system("echo 'Unconfigured machine $hostname.' |\ - mailto $emailto -s '$subj' > /dev/null"); - exit 1; +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"); + } } -# ----------------------------- 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"); - $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; - $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; -} - -# ------------------------------------------------------------- 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}=$name; - } +sub start_daemon { + my ($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 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; - } +sub checkon_daemon { + my ($fh,$daemon,$maxsize,$send,$args)=@_; + + my $result; + &log($fh,'

'.$daemon.'

Log

'); + printf("%-15s ",$daemon); + if ($fh) { + if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){ + if (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

"); + } + } + if ($fh) { + if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){ + &log($fh,"

");
+	        if (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

"); + + my $cpucount; + if (open(PIPE,"lscpu |grep '^CPU(s)' 2>&1 |")) { + my $info = ; + chomp($info); + ($cpucount) = ($info =~ /^\QCPU(s):\E\s+(\d+)$/); + close(PIPE); + } + if (!$cpucount) { + $cpucount = 1; + } + my %loadtarget = ( + error => 4.0*$cpucount, + warn => 2.0*$cpucount, + note => 1.0*$cpucount, + ); + open (LOADAVGH,"/proc/loadavg"); + my $loadavg=; + close (LOADAVGH); + + &log($fh,"$loadavg"); + + my @parts=split(/\s+/,$loadavg); + if ($parts[1]>$loadtarget{'error'}) { + $errors++; + } elsif ($parts[1]>$loadtarget{'warn'}) { + $warnings++; + } elsif ($parts[1]>$loadtarget{'note'}) { + $notices++; + } + + &log($fh,"

df

"); + &log($fh,"
");
+
+    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) { $notices++; } -$statusdir="/home/httpd/html/lon-status"; + &log($fh,"

distprobe

"); + &log($fh,"
");
+    &log($fh,&encode_entities(&LONCAPA::distro(),'<>&"'));
+    &log($fh,"
"); -$errors=0; -$warnings=0; -$notices=0; + &errout($fh); +} -$now=time; -$date=localtime($now); +sub start_logging { + my $fh=IO::File->new(">$statusdir/newstatus.html"); + my %simplestatus=(); + my $now=time; + my $date=localtime($now); -{ -my $fh=IO::File->new(">$statusdir/newstatus.html"); -print $fh (< + &log($fh,(< + 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. lonnet -
  10. Connections -
  11. Delayed Messages -
  12. Error Count +
  13. Configuration
    14. +
  14. Machine Information
    15. +
  15. Temporary Files
    16. +
  16. Session Tokens
    17. +
  17. WebDAV Session Tokens
    18. +
  18. httpd
    19. +
  19. lonsql
    20. +
  20. lond
    21. +
  21. lonc
    22. +
  22. lonnet
    23. +
  23. Connections
    24. +
  24. Delayed Messages
    25. +
  25. 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

    "); + if (keys(%Apache::lonnet::spareid) > 0) { + &log($fh,"
      "); + 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($fh,"
    \n"); + } else { + &log($fh,"No spare hosts specified
    \n"); + } + return $fh; } -print $fh "
\n"; - -# --------------------------------------------------------------------- Machine - -print $fh '

Machine Information

'; -print $fh "

loadavg

"; - -open (LOADAVGH,"/proc/loadavg"); -$loadavg=; -close (LOADAVGH); +# --------------------------------------------------------------- clean out tmp +sub clean_tmp { + my ($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}):
'); + } + } + } +} -print $fh "$loadavg"; +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,$removed); +} -@parts=split(/\s+/,$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++;
-      $notices++; 
-   } elsif ($usage>80) {
-      $warnings++;
-   } elsif ($usage>60) {
-      $notices++;
-   }
-   if ($usage>95) { $warnings++; $warnings++ }
-}
-close (DFH);
-print $fh "
"; - - -print $fh "

ps

"; -print $fh "
";
-$psproc=0;
-
-open (PSH,"ps -aux|");
-while ($line=) { 
-   print $fh "$line"; 
-   $psproc++;
+# ------------------------------------------------------------ clean out lonIDs
+sub clean_lonIDs {
+    my ($fh)=@_;
+    &log($fh,'
Session Tokens
');
+    my $cleaned=0;
+    my $active=0;
+    while (my $fname=<$perlvar{'lonIDsDir'}/*>) {
+        my $now=time;
+        if (-l $fname) {
+            my $linkfname = readlink($fname);
+            if (-f $linkfname) {
+                if ($linkfname =~ m{^$perlvar{'lonIDsDir'}/[^/]+\.id$}) {
+                    my @data = stat($linkfname);
+                    my $mtime = $data[9];
+                    my $since=$now-$mtime;
+                    if ($since>$perlvar{'lonExpire'}) {
+                        if (unlink($linkfname)) {
+                            $cleaned++;
+                            &log($fh,"Unlinking $linkfname
");
+                            unlink($fname);
+                        }
+                    }
+                }
+            } else {
+               unlink($fname);
+            }
+        } elsif (-f $fname) {
+            my @data = stat($fname);
+            my $mtime = $data[9];
+            my $since=$now-$mtime;
+            if ($since>$perlvar{'lonExpire'}) {
+                if (unlink($fname)) {
+                    $cleaned++;
+                    &log($fh,"Unlinking $fname
");
+                }
+            } else {
+                $active++;
+            }
+        }
+    }
+    &log($fh,"
Cleaned up ".$cleaned." stale session token(s).
");
+    &log($fh,"
$active open session(s)
");
 }
-close (PSH);
-print $fh "
"; -if ($psproc>200) { $notices++; } -if ($psproc>250) { $notices++; } +# -------------------------------------------------------- clean out balanceIDs -&errout($fh); +sub clean_balanceIDs { + my ($fh)=@_; + &log($fh,'

Session Tokens

'); + my $cleaned=0; + my $active=0; + if (-d $perlvar{'lonBalanceDir'}) { + while (my $fname=<$perlvar{'lonBalanceDir'}/*.id>) { + 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 balancer files

"); + &log($fh,"

$active unexpired balancer files

"); +} -# --------------------------------------------------------------- clean out tmp -print $fh '

Temporary Files

'; -$cleaned=0; -while ($fname=<$perlvar{'lonDaemons'}/tmp/*>) { - my ($dev,$ino,$mode,$nlink, - $uid,$gid,$rdev,$size, - $atime,$mtime,$ctime, - $blksize,$blocks)=stat($fname); - $now=time; - $since=$now-$mtime; - if ($since>$perlvar{'lonExpire'}) { - $cleaned++; - unlink("$fname"); - } - +# ------------------------------------------------ clean out webDAV Session IDs +sub clean_webDAV_sessionIDs { + my ($fh)=@_; + if ($perlvar{'lonRole'} eq 'library') { + &log($fh,'

WebDAV Session Tokens

'); + my $cleaned=0; + my $active=0; + my $now = time; + if (-d $perlvar{'lonDAVsessDir'}) { + while (my $fname=<$perlvar{'lonDAVsessDir'}/*>) { + my @stats = stat($fname); + my $since=$now-$stats[9]; + if ($since>$perlvar{'lonExpire'}) { + $cleaned++; + &log($fh,"Unlinking $fname
"); + unlink("$fname"); + } else { + $active++; + } + } + &log($fh,"

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

"); + &log($fh,"

$active open webDAV session(s)

"); + } + } } -print $fh "Cleaned up ".$cleaned." files."; -# ------------------------------------------------------------ clean out lonIDs -print $fh '

Session Tokens

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

Cleaned up ".$cleaned." stale session token(s)."; -print $fh "

$active open session(s)

"; + # ----------------------------------------------------------------------- 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

';
+# ---------------------------------------------------------------------- lonnet
 
-open (DFH,"tail -n25 /etc/httpd/logs/access_log|");
-while ($line=) { print $fh "$line" };
-close (DFH);
-
-print $fh "

Error Log

";
-
-open (DFH,"tail -n25 /etc/httpd/logs/error_log|");
-while ($line=) { 
-   print $fh "$line";
-   if ($line=~/\[error\]/) { $notices++; } 
-};
-close (DFH);
-print $fh "
"; -&errout($fh); - - -# ---------------------------------------------------------------------- lonsql - -my $restartflag=1; -if ($perlvar{'lonRole'} eq "library") { - - print $fh '

lonsql

Log

';
-    print "lonsql\n";
-    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/) { $warnings++; }
-	};
+sub rotate_lonnet_logs {
+    my ($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);
     }
-    print $fh "
";
-    
-    my $lonsqlfile="$perlvar{'lonDaemons'}/logs/lonsql.pid";
- 
-    $restartflag=1;
-   
-    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
";
-	    $restartflag=0;
-	} else {
-	    $errors++; $errors++;
-	    print $fh "
lonsql at pid $lonsqlpid not responding
";
-		$restartflag=1;
-	print $fh 
-	    "
Decided to clean up stale .pid file and restart lonsql
";
+    &log($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") }
+
+    my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
+    &rotate_logfile($fname,$fh,'lonnet log');
+
+    &log($fh,"
"); + &errout($fh); +} + +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{$item}); } - if ($restartflag==1) { - $errors++; - print $fh '
Killall lonsql: '. - system('killall lonsql').' - '; - sleep 60; - print $fh unlink($lonsqlfile).' - '. - system('killall -9 lonsql'). - '
'; - print $fh "

lonsql not running, trying to start

"; - system( - "$perlvar{'lonDaemons'}/lonsql 2>>$perlvar{'lonDaemons'}/logs/lonsql_errors"); - sleep 10; - 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

"; +} + +# ----------------------------------------------------------------- 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 { + $result=$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( - "$perlvar{'lonDaemons'}/lonsql 2>>$perlvar{'lonDaemons'}/logs/lonsql_errors"); - sleep 10; + $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,$weightsref,$exclusionsref)=@_; + &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; + my $ignored=0; - &errout($fh); -} -# ------------------------------------------------------------------------ lond + my %hostname = &Apache::lonnet::all_hostnames(); + my $numhosts = scalar(keys(%hostname)); + my $checkbackwards = 0; + my $checkfrom = 0; + my $checkexcluded = 0; + my (%bymachine,%weights,%exclusions,%serverhomes); + if (ref($weightsref) eq 'HASH') { + %weights = %{$weightsref}; + } + if (ref($exclusionsref) eq 'HASH') { + %exclusions = %{$exclusionsref}; + if (keys(%exclusions)) { + $checkexcluded = 1; + %serverhomes = &read_serverhomeIDs(); + } + } -print $fh '

lond

Log

';
-print "lond\n";
+#
+# For LON-CAPA 1.2.0 to 2.1.3 (release dates: 8/31/2004 and 3/31/2006) any
+# entry logged in lonnet.perm.log for completion of a delayed (critical)
+# transaction lacked the hostID for the remote node to which the command
+# to be completed was sent.
+#
+# Because of this, exclusion of items in lonnet.perm.log for nodes which are
+# no longer part of the cluster from adding to the overall "unsend" count
+# needs additional effort besides the changes made in loncron rev. 1.105.
+#
+# For "S" (completion) events logging in LON-CAPA 1.2.0 through 2.1.3 included
+# "LondTransaction=HASH(hexadecimal)->getClient() :$cmd, where the hexadecimal
+# is a memory location, and $cmd is the command sent to the remote node.
+#
+# Starting with 2.2.0 (released 8/21/2006) logging for "S" (completion) events
+# had sethost:$host_id:$cmd after LondTransaction=HASH(hexadecimal)->getClient()
+#
+# Starting with 2.4.1 (released 6/13/2007) logging for "S" replaced echoing the
+# getClient() call with the result of the Transaction->getClient() call itself
+# undef for completion of delivery of a delayed message.
+#
+# The net effect of these changes is that lonnet.perm.log is now accessed three
+# times: (a) oldest record is checked, if earlier than release date for 2.5.0
+# then (b) file is read backwards, with timestamp recorded for most recent
+# instance of logged "S" event for "update" command without "sethost:$host_id:"
+# then (c) file is read forward with records ignored which predate the timestamp
+# recorded in (b), if one was found.
+#
+# In (c), when calculating the unsend total, i.e., the difference between delayed
+# transactions ("D") and sent transactions ("S"), transactions are ignored if the
+# target node is no longer in the cluster, and also (for "update" commands), if
+# the target node is in the list of nodes excluded from the count, in the domain
+# configuration for this machine's default domain.  The idea here is to remove
+# delayed "update" commands for nodes for which inbound access to port 5663,
+# is blocked, but are still part of the LON-CAPA network, (i.e., they can still
+# replicate content from other nodes).
+#
 
-if (-e "$perlvar{'lonDaemons'}/logs/lond.log"){
-open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/lond.log|");
-while ($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"; - -$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, sending USR1

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

lond at pid $londpid not responding

"; - $restartflag=1; - print $fh - "

Decided to clean up stale .pid file and restart lond

"; - } -} -if ($restartflag==1) { - $errors++; - print $fh '
Killall lond: '. - system('killall lond').' - '; - sleep 60; - print $fh unlink($londfile).' - '.system('killall -9 lond'). - '
'; - print $fh "

lond not running, trying to start

"; - system( - "$perlvar{'lonDaemons'}/lond 2>>$perlvar{'lonDaemons'}/logs/lond_errors"); - sleep 10; - 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( - "$perlvar{'lonDaemons'}/lond 2>>$perlvar{'lonDaemons'}/logs/lond_errors"); - sleep 10; - } - } 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++; }
-    };
-    close (DFH);
-    print $fh "
"; - } -} + my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r"); + if (defined($dfh)) { + while (my $line=<$dfh>) { + my ($time,$sdf,$rest)=split(/:/,$line,3); + if ($time < 1541185772) { + $checkbackwards = 1; + } + last; + } + undef $dfh; + } -$fname="$perlvar{'lonDaemons'}/logs/lond.log"; + if ($checkbackwards) { + if (tie *BW, 'File::ReadBackwards', "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") { + while(my $line=) { + if ($line =~ /\QLondTransaction=HASH\E[^:]+:update:/) { + ($checkfrom) = split(/:/,$line,2); + last; + } + } + close(BW); + } + } + $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r"); + if (defined($dfh)) { + while (my $line=<$dfh>) { + my ($time,$sdf,$rest)=split(/:/,$line,3); + next unless (($sdf eq 'F') || ($sdf eq 'S') || ($sdf eq 'D')); + next if (($checkfrom) && ($time <= $checkfrom)); + my ($dserv,$dcmd); + if ($sdf eq 'S') { + my ($serva,$cmda,$servb,$cmdb) = split(/:/,$rest); + if ($cmda eq 'sethost') { + chomp($cmdb); + $dcmd = $cmdb; + } else { + $dcmd = $cmda; + } + if (($serva =~ /^LondTransaction/) || ($serva eq '')) { + unless (($servb eq '') || ($servb =~ m{^/})) { + $dserv = $servb; + } + } else { + $dserv = $serva; + } + } else { + ($dserv,$dcmd) = split(/:/,$rest); + } + if ($sdf eq 'F') { + my $local=localtime($time); + &log($fh,"Failed: $time, $dserv, $dcmd
"); + $warnings++; + } + next if ((($dserv eq '') || ($dcmd eq '')) && ($sdf ne 'F')); + if ($sdf eq 'S') { + if ($dcmd eq 'update') { + if ($hostname{$dserv}) { + if ($exclusions{$serverhomes{$hostname{$dserv}}}) { + $ignored --; + } else { + $unsend --; + } + } + if (exists($bymachine{$dserv})) { + $bymachine{$dserv} --; + } else { + $bymachine{$dserv} = -1; + } + } else { + if ($hostname{$dserv}) { + $unsend --; + } + } + } elsif ($sdf eq 'D') { + if ($dcmd eq 'update') { + if ($hostname{$dserv}) { + if ($exclusions{$serverhomes{$hostname{$dserv}}}) { + $ignored ++; + } else { + $unsend ++; + } + } + if (exists($bymachine{$dserv})) { + $bymachine{$dserv} ++; + } else { + $bymachine{$dserv} = 1; + } + } else { + if ($hostname{$dserv}) { + $unsend ++; + } + } + } + } + undef $dfh; + my $nodest = 0; + my $retired = 0; + my %active; + if (keys(%bymachine)) { + unless ($checkexcluded) { + %serverhomes = &read_serverhomeIDs(); + } + foreach my $key (keys(%bymachine)) { + if ($bymachine{$key} > 0) { + if ($hostname{$key}) { + $active{$serverhomes{$hostname{$key}}} += $bymachine{$key}; + } else { + $retired ++; + $nodest += $bymachine{$key}; + } + } + } + } + if (keys(%active)) { + &log($fh,"

Unsend messages by node, active (undegraded) nodes in cluster

\n"); + foreach my $key (sort(keys(%active))) { + &log($fh,&encode_entities("$key => $active{$key}",'<>&"')."\n"); + } + } + &log($fh,"

Total unsend messages: $unsend for ".scalar(keys(%active))." active (undegraded) nodes in cluster.

\n"); + if (keys(%exclusions) > 0) { + &log($fh,"

Total incomplete updates $ignored for ".scalar(keys(%exclusions))." degraded nodes in cluster.

\n"); + } + if ($retired) { + &log($fh,"

Total unsent $nodest for $retired nodes no longer in cluster.

\n"); + } + if ($unsend > 0) { + $warnings=$warnings+$weights{'U'}*$unsend; + } + } - 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

';
-print "lonc\n";
-
-if (-e "$perlvar{'lonDaemons'}/logs/lonc.log"){
-open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/lonc.log|");
-while ($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

"; - # Solution: kill parent and children processes, remove .pid and restart - $restartflag=1; - print $fh - "

Decided to clean up stale .pid file and restart lonc

"; - } -} -if ($restartflag==1) { - $errors++; - print $fh '
Killall lonc: '. - system('killall lonc').' - '; - sleep 60; - print $fh unlink($loncfile).' - '.system('killall -9 lonc'). - '
'; - print $fh "

lonc not running, trying to start

"; - system( - "$perlvar{'lonDaemons'}/lonc 2>>$perlvar{'lonDaemons'}/logs/lonc_errors"); - sleep 10; - 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( - "$perlvar{'lonDaemons'}/lonc 2>>$perlvar{'lonDaemons'}/logs/lonc_errors"); - sleep 10; - } - } 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/) { $notices++; }
-    };
+    if ($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 "
"; - } +# 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="$perlvar{'lonDaemons'}/logs/lonc.log"; - - my ($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 finish_logging { + my ($fh,$weightsref)=@_; + my %weights; + if (ref($weightsref) eq 'HASH') { + %weights = %{$weightsref}; + } + &log($fh,"\n"); + $totalcount=($weights{'N'}*$notices)+($weights{'W'}*$warnings)+($weights{'E'}*$errors); + &errout($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; } + $simplestatus{'time'}=time; } - -&errout($fh); -# ---------------------------------------------------------------------- lonnet +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(); +} -print $fh '

lonnet

Temp Log

';
-print "lonnet\n";
-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";
+    my %hostname = &Apache::lonnet::all_hostnames();
+    my $output;
+    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.\-]+$/) {
+                $output .= $id.':'.$loncaparev."\n";
+            }
+        }
+    }
+    if ($output) {
+        if (open(my $fh,">$perlvar{'lonTabDir'}/loncaparevs.tab")) {
+            print $fh $output;
+            close($fh);
+            &Apache::lonnet::load_loncaparevs();
+        }
+    }
+    return;
 }
 
-print $fh "
"; -&errout($fh); -# ----------------------------------------------------------------- Connections +sub write_serverhomeIDs { + print "Retrieving LON-CAPA lonHostID information.\n"; + my %name_to_host = &Apache::lonnet::all_names(); + my $output; + 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 '') { + $output .= $name.':'.$serverhomeID."\n"; + } else { + $output .= $name.':'.$name_to_host{$name}->[0]."\n"; + } + } + } + } + if ($output) { + if (open(my $fh,">$perlvar{'lonTabDir'}/serverhomeIDs.tab")) { + print $fh $output; + close($fh); + &Apache::lonnet::load_serverhomeIDs(); + } + } + return; +} -print $fh '

Connections

'; +sub write_checksums { + my $distro = &LONCAPA::distro(); + if ($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})); + } + 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 ""; -foreach $tryserver (keys %hostname) { +sub write_hostips { + my $lontabdir = $perlvar{'lonTabDir'}; + my $defdom = $perlvar{'lonDefDomain'}; + my $lonhost = $perlvar{'lonHostID'}; + my $newfile = "$lontabdir/currhostips.tab"; + my $oldfile = "$lontabdir/prevhostips.tab"; + my (%prevhosts,%currhosts,%ipchange); + if ((-e $newfile) && (-s $newfile)) { + move($newfile,$oldfile); + chmod(0644,$oldfile); + if (open(my $fh,'<',$oldfile)) { + while (my $line=<$fh>) { + chomp($line); + if ($line =~ /^([^:]+):([\d.]+)$/) { + $prevhosts{$1} = $2; + } + } + close($fh); + } + } + my ($ip_info,$cached) = + &Apache::lonnet::is_cached_new('iphost','iphost'); + if (!$cached) { + &Apache::lonnet::get_iphost(); + ($ip_info,$cached) = + &Apache::lonnet::is_cached_new('iphost','iphost'); + } + if (ref($ip_info) eq 'ARRAY') { + %currhosts = %{$ip_info->[1]}; + if (open(my $fh,'>',$newfile)) { + foreach my $key (keys(%currhosts)) { + print $fh "$key:$currhosts{$key}\n"; + } + close($fh); + chmod(0644,$newfile); + } + } + if (keys(%prevhosts) && keys(%currhosts)) { + foreach my $key (keys(%prevhosts)) { + unless ($currhosts{$key} eq $prevhosts{$key}) { + $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key}; + } + } + foreach my $key (keys(%currhosts)) { + unless ($currhosts{$key} eq $prevhosts{$key}) { + $ipchange{$key} = $prevhosts{$key}.' | '.$currhosts{$key}; + } + } + } + if (&Apache::lonnet::domain($defdom,'primary') eq $lonhost) { + if (keys(%ipchange)) { + if (open(my $fh,'>>',$perlvar{'lonDaemons'}.'/logs/hostip.log')) { + print $fh "********************\n".localtime(time).' Changes --'."\n". + "| Hostname | Previous IP | New IP |\n". + " --------------------------------- \n"; + foreach my $hostname (sort(keys(%ipchange))) { + print $fh "| $hostname | $ipchange{$hostname} |\n"; + } + print $fh "\n*******************\n\n"; + close($fh); + } + my $emailto = &Apache::loncommon::build_recipient_list(undef, + 'hostipmail',$defdom); + if ($emailto) { + my $subject = "LON-CAPA Hostname to IP change ($perlvar{'lonHostID'})"; + my $chgmail = "To: $emailto\n". + "Subject: $subject\n". + "Content-type: text/plain\; charset=UTF-8\n". + "MIME-Version: 1.0\n\n". + "Host/IP changes\n". + " \n". + "| Hostname | Previous IP | New IP |\n". + " --------------------------------- \n"; + foreach my $hostname (sort(keys(%ipchange))) { + $chgmail .= "| $hostname | $ipchange{$hostname} |\n"; + } + $chgmail .= "\n\n"; + if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) { + print $mailh $chgmail; + close($mailh); + print "Sending mail notification of hostname/IP changes.\n"; + } + } + } + } + return; +} - $answer=reply("pong",$tryserver); - if ($answer eq "$tryserver:$perlvar{'lonHostID'}") { - $result="ok"; +sub get_domain_config { + my ($dom,$primlibserv,$isprimary,$url,%confhash); + $dom = $perlvar{'lonDefDomain'}; + $primlibserv = &Apache::lonnet::domain($dom,'primary'); + if ($primlibserv eq $perlvar{'lonHostID'}) { + $isprimary = 1; + } elsif ($primlibserv ne '') { + my $protocol = $Apache::lonnet::protocol{$primlibserv}; + my $hostname = &Apache::lonnet::hostname($primlibserv); + unless ($protocol eq 'https') { + $protocol = 'http'; + } + $url = $protocol.'://'.$hostname.'/cgi-bin/listdomconfig.pl?primary='.$primlibserv.'&format=raw'; + } + if ($isprimary) { + my $lonusersdir = $perlvar{'lonUsersDir'}; + my $fname = $lonusersdir.'/'.$dom.'/configuration.db'; + if (-e $fname) { + my $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER()); + if (ref($dbref) eq 'HASH') { + foreach my $key (sort(keys(%{$dbref}))) { + my $value = $dbref->{$key}; + if ($value =~ s/^__FROZEN__//) { + $value = thaw(&LONCAPA::unescape($value)); + } else { + $value = &LONCAPA::unescape($value); + } + $confhash{$key} = $value; + } + &LONCAPA::locking_hash_untie($dbref); + } + } } else { - $result=$answer; - $warnings++; - if ($answer eq 'con_lost') { $warnings++; } + my $ua=new LWP::UserAgent; + $ua->timeout(5); + my $request=new HTTP::Request('GET',$url); + my $response=$ua->request($request); + unless ($response->is_error()) { + my $content = $response->content; + if ($content) { + my @pairs=split(/\&/,$content); + foreach my $item (@pairs) { + my ($key,$value)=split(/=/,$item,2); + my $what = &LONCAPA::unescape($key); + if ($value =~ s/^__FROZEN__//) { + $value = thaw(&LONCAPA::unescape($value)); + } else { + $value = &LONCAPA::unescape($value); + } + $confhash{$what}=$value; + } + } + } } - print $fh "\n"; - + return \%confhash; } -print $fh "
$tryserver$result
"; -&errout($fh); -# ------------------------------------------------------------ Delayed messages +sub get_permcount_settings { + my ($domconf) = @_; + my ($defaults,$names) = &Apache::loncommon::lon_status_items(); + my (%weights,$threshold,$sysmail,$reportstatus,%exclusions); + foreach my $type ('E','W','N','U') { + $weights{$type} = $defaults->{$type}; + } + $threshold = $defaults->{'threshold'}; + $sysmail = $defaults->{'sysmail'}; + $reportstatus = 1; + if (ref($domconf) eq 'HASH') { + if (ref($domconf->{'contacts'}) eq 'HASH') { + if ($domconf->{'contacts'}{'reportstatus'} == 0) { + $reportstatus = 0; + } + if (ref($domconf->{'contacts'}{'lonstatus'}) eq 'HASH') { + if (ref($domconf->{'contacts'}{'lonstatus'}{weights}) eq 'HASH') { + foreach my $type ('E','W','N','U') { + if (exists($domconf->{'contacts'}{'lonstatus'}{weights}{$type})) { + $weights{$type} = $domconf->{'contacts'}{'lonstatus'}{weights}{$type}; + } + } + } + if (ref($domconf->{'contacts'}{'lonstatus'}{'excluded'}) eq 'ARRAY') { + my @excluded = @{$domconf->{'contacts'}{'lonstatus'}{'excluded'}}; + if (@excluded) { + map { $exclusions{$_} = 1; } @excluded; + } + } + if (exists($domconf->{'contacts'}{'lonstatus'}{'threshold'})) { + $threshold = $domconf->{'contacts'}{'lonstatus'}{'threshold'}; + } + if (exists($domconf->{'contacts'}{'lonstatus'}{'sysmail'})) { + $sysmail = $domconf->{'contacts'}{'lonstatus'}{'sysmail'}; + } + } + } + } + return ($threshold,$sysmail,$reportstatus,\%weights,\%exclusions); +} -print $fh '

Delayed Messages

'; -print "buffers\n"; +sub read_serverhomeIDs { + my %server; + if (-e "$perlvar{'lonTabDir'}/serverhomeIDs.tab") { + if (open(my $fh,'<',"$perlvar{'lonTabDir'}/serverhomeIDs.tab")) { + while (<$fh>) { + my($host,$id) = split(/:/); + chomp($id); + $server{$host} = $id; + } + close($fh); + } + } + return %server; +} -print $fh '

Scanning Permanent Log

'; +sub send_mail { + my ($sysmail,$reportstatus) = @_; + my $defdom = $perlvar{'lonDefDomain'}; + my $origmail = $perlvar{'lonAdmEMail'}; + my $emailto = &Apache::loncommon::build_recipient_list(undef, + 'lonstatusmail',$defdom,$origmail); + if (($totalcount>$sysmail) && ($reportstatus)) { + $emailto.=",$perlvar{'lonSysEMail'}"; + } + my $from; + my $hostname=`/bin/hostname`; + chop($hostname); + $hostname=~s/[^\w\.]//g; + if ($hostname) { + $from = 'www@'.$hostname; + } + my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; + my $loncronmail = "To: $emailto\n". + "From: $from\n". + "Subject: ".$subj."\n". + "Content-type: text/html\; charset=UTF-8\n". + "MIME-Version: 1.0\n\n"; + if (open(my $fh,"<$statusdir/index.html")) { + while (<$fh>) { + $loncronmail .= $_; + } + close($fh); + } else { + $loncronmail .= "Failed to read from http://$hostname/lon-status/index.html\n"; + } + $loncronmail .= "\n\n"; + if (open(my $mailh, "|/usr/lib/sendmail -oi -t -odb")) { + print $mailh $loncronmail; + close($mailh); + print "Sending mail.\n"; + } else { + print "Sending mail failed.\n"; + } +} -$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
"; - $warnings++; - } - if ($sdf eq 'S') { $unsend--; } - if ($sdf eq 'D') { $unsend++; } - } -} -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"; -print "writing done\n"; -} - -rename ("$statusdir/newstatus.html","$statusdir/index.html"); - -if ($totalcount>200) { - print "mailing\n"; - $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; - $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; - system( - "metasend -b -t $emailto -s '$subj' -f $statusdir/index.html -m text/html"); +sub usage { + print(< \$help, + "justcheckdaemons" => \$justcheckdaemons, + "noemail" => \$noemail, + "justcheckconnections" => \$justcheckconnections, + "justreload" => \$justreload, + "justiptables" => \$justiptables + ); + if ($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 = Sys::Hostname::FQDN::fqdn(); + $hostname=~s/\.+/./g; + $hostname=~s/\-+/-/g; + $hostname=~s/[^\w\.-]//g; # make sure is safe to pass through shell + my $subj="LON: Unconfigured machine $hostname"; + system("echo 'Unconfigured machine $hostname.' |". + " mail -s '$subj' $emailto > /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: $perlvar{'lonHostID'} User ID mismatch"; + system("echo 'User ID mismatch. loncron must be run as user www.' |". + " mail -s '$subj' $emailto > /dev/null"); + exit 1; + } +# -------------------------------------------- Force reload of host information + my $nomemcache; + if ($justcheckdaemons) { + $nomemcache=1; + my $memcachepidfile="$perlvar{'lonDaemons'}/logs/memcached.pid"; + my $memcachepid; + if (-e $memcachepidfile) { + my $memfh=IO::File->new($memcachepidfile); + $memcachepid=<$memfh>; + chomp($memcachepid); + if ($memcachepid =~ /^\d+$/ && kill 0 => $memcachepid) { + undef($nomemcache); + } + } + } + if (!$justiptables) { + &Apache::lonnet::load_hosts_tab(1,$nomemcache); + &Apache::lonnet::load_domain_tab(1,$nomemcache); + &Apache::lonnet::get_iphost(1,$nomemcache); + } +# ----------------------------------------- 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 && !$justiptables) { + $fh=&start_logging(); + + &log_machine_info($fh); + &clean_tmp($fh); + &clean_lonIDs($fh); + &clean_balanceIDs($fh); + &clean_webDAV_sessionIDs($fh); + &check_httpd_logs($fh); + &rotate_lonnet_logs($fh); + &rotate_other_logs($fh); + } + if (!$justcheckconnections && !$justreload && !$justiptables) { + &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 && !$justreload && !$justiptables) { + my $domconf = &get_domain_config(); + my ($threshold,$sysmail,$reportstatus,$weightsref,$exclusionsref) = + &get_permcount_settings($domconf); + &check_delayed_msg($fh,$weightsref,$exclusionsref); + &finish_logging($fh,$weightsref); + &log_simplestatus(); + &write_loncaparevs(); + &write_serverhomeIDs(); + &write_checksums(); + &write_hostips(); + if ($totalcount>$threshold && !$noemail) { &send_mail($sysmail,$reportstatus); } + } +} +&main(); +1;