--- loncom/loncron 2003/10/14 15:36:21 1.44 +++ loncom/loncron 2019/07/07 16:15:24 1.103.2.4 @@ -1,324 +1,234 @@ #!/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 1.103.2.4 2019/07/07 16:15:24 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/ # -# 7/14,7/15,7/19,7/21,7/22,11/18, -# 2/8 Gerd Kortemeyer -# 12/23 Gerd Kortemeyer -# YEAR=2001 -# 09/04,09/06,11/26 Gerd Kortemeyer $|=1; +use strict; use lib '/home/httpd/lib/perl/'; use LONCAPA::Configuration; +use LONCAPA::Checksumming; +use LONCAPA; +use Apache::lonnet; +use Apache::loncommon; use IO::File; use IO::Socket; +use HTML::Entities; +use Getopt::Long; +use File::Copy; +#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 } +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"); + } +} + sub start_daemon { - my ($fh,$daemon,$pidfile) = @_; + my ($fh,$daemon,$pidfile,$args) = @_; my $progname=$daemon; - if ($daemon eq 'lonc' && $ARGV[0] eq 'new') { + if ($daemon eq 'lonc') { $progname='loncnew'; - print "new "; } - system("$perlvar{'lonDaemons'}/$progname 2>>$perlvar{'lonDaemons'}/logs/${daemon}_errors"); - sleep 2; + 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) { - print $fh "Seems like it started ...

"; + &log($fh,"

Seems like it started ...

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

"; + &log($fh,"

Seems like that did not work!

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

'.$daemon.'

Log

';
-    printf("%-10s ",$daemon);
-    if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
-	open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
-	while ($line=) { 
-	    print $fh "$line";
-	    if ($line=~/INFO/) { $notices++; }
-	    if ($line=~/WARNING/) { $notices++; }
-	    if ($line=~/CRITICAL/) { $warnings++; }
-	};
-	close (DFH);
+    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,"
");
     }
-    print $fh "
"; - + my $pidfile="$perlvar{'lonDaemons'}/logs/$daemon.pid"; my $restartflag=1; - + my $daemonpid; if (-e $pidfile) { my $lfh=IO::File->new("$pidfile"); - my $daemonpid=<$lfh>; + $daemonpid=<$lfh>; chomp($daemonpid); - if (kill 0 => $daemonpid) { - print $fh "

$daemon at pid $daemonpid responding"; - if ($sendusr1) { print $fh ", sending USR1"; } - print $fh "

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

$daemon at pid $daemonpid not responding

"; + &log($fh,"

$daemon at pid $daemonpid not responding

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

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

"; + &log($fh,"

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

"); } } if ($restartflag==1) { $simplestatus{$daemon}='off'; $errors++; - print $fh '
Killall '.$daemon.': '. - `killall $daemon 2>&1`.' - '; - sleep 2; - print $fh unlink($pidfile).' - '. - `killall -9 $daemon 2>&1`. - '
'; - print $fh "

$daemon not running, trying to start

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

$daemon at pid $daemonpid responding

"; + 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++; - print $fh "

$daemon at pid $daemonpid not responding

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

"; + &log($fh,"

$daemon at pid $daemonpid not responding

"); + &log($fh,"

Give it one more try ...

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

$daemon at pid $daemonpid responding

"; + 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++; - print $fh "

$daemon at pid $daemonpid not responding

"; - print $fh "Unable to start $daemon

"; + &log($fh,"

$daemon at pid $daemonpid not responding

"); + &log($fh,"

Unable to start $daemon

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

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

"); + } + } } - $fname="$perlvar{'lonDaemons'}/logs/$daemon.log"; - - my ($dev,$ino,$mode,$nlink, - $uid,$gid,$rdev,$size, - $atime,$mtime,$ctime, - $blksize,$blocks)=stat($fname); - - if ($size>$maxsize) { - print $fh "Rotating logs ...

"; - rename("$fname.2","$fname.3"); - rename("$fname.1","$fname.2"); - rename("$fname","$fname.1"); - } + my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log"; + &rotate_logfile($fname,$fh,'logs'); &errout($fh); -} -# ================================================================ Main Program - -# --------------------------------- 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 - -# --------------------------------------- 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; -} - -# ----------------------------- 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,$ip,$domdescr)=split(/:/,$configline); - if ($id && $domain && $role && $name && $ip) { - $hostname{$id}=$name; - $hostdom{$id}=$domain; - $hostip{$id}=$ip; - $hostrole{$id}=$role; - if ($domdescr) { $domaindescription{$domain}=$domdescr; } - if (($role eq 'library') && ($id ne $perlvar{'lonHostID'})) { - $libserv{$id}=$name; - } - } else { - if ($configline) { -# &logthis("Skipping hosts.tab line -$configline-"); - } - } - } + return $result; } -# ------------------------------------------------------ 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; - } - } -} - -# ---------------------------------------------------------------- Start report - -$statusdir="/home/httpd/html/lon-status"; - -$errors=0; -$warnings=0; -$notices=0; - -$now=time; -$date=localtime($now); - -{ - my $fh=IO::File->new(">$statusdir/newstatus.html"); - my %simplestatus=(); - - print $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. lonhttpd -
  10. lonnet -
  11. Connections -
  12. Delayed Messages -
  13. Error Count -
-
- -

Configuration

-

PerlVars

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

Hosts

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

Spare Hosts

    "; - foreach $id (sort(keys(%spareid))) { - print $fh "
  1. $id\n"; - } - - print $fh "
\n"; - # --------------------------------------------------------------------- Machine - - print $fh '

Machine Information

'; - print $fh "

loadavg

"; - +sub log_machine_info { + my ($fh)=@_; + &log($fh,'

Machine Information

'); + &log($fh,"

loadavg

"); + open (LOADAVGH,"/proc/loadavg"); - $loadavg=; + my $loadavg=; close (LOADAVGH); - print $fh "$loadavg"; + &log($fh,"$loadavg"); - @parts=split(/\s+/,$loadavg); + my @parts=split(/\s+/,$loadavg); if ($parts[1]>4.0) { $errors++; } elsif ($parts[1]>2.0) { @@ -327,14 +237,14 @@ ENDHEADERS $notices++; } - print $fh "

df

"; - print $fh "
";
+    &log($fh,"
df
");
+    &log($fh,"
");
 
     open (DFH,"df|");
-    while ($line=) { 
-	print $fh "$line"; 
+    while (my $line=) { 
+	&log($fh,&encode_entities($line,'<>&"')); 
 	@parts=split(/\s+/,$line);
-	$usage=$parts[4];
+	my $usage=$parts[4];
 	$usage=~s/\W//g;
 	if ($usage>90) { 
 	    $warnings++;
@@ -347,226 +257,478 @@ ENDHEADERS
 	if ($usage>95) { $warnings++; $warnings++; $simplestatus{'diskfull'}++; }
     }
     close (DFH);
-    print $fh "
";
+    &log($fh,"
"); - print $fh "

ps

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

distprobe

"); + &log($fh,"
");
+    &log($fh,&encode_entities(&LONCAPA::distro(),'<>&"'));
+    &log($fh,"
"); + &errout($fh); +} -# --------------------------------------------------------------- clean out tmp - print $fh '

Temporary Files

'; - $cleaned=0; - $old=0; - while ($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'}) { - $line=''; - if (open(PROBE,$fname)) { - $line=; - close(PROBE); - } - unless ($line=~/^CHECKOUTTOKEN\&/) { - $cleaned++; - unlink("$fname"); - } else { - if ($since>365*$perlvar{'lonExpire'}) { - $cleaned++; - unlink("$fname"); - } else { $old++; } - } - } +sub start_logging { + my $fh=IO::File->new(">$statusdir/newstatus.html"); + my %simplestatus=(); + my $now=time; + my $date=localtime($now); + + &log($fh,(< + + +LON Status Report $perlvar{'lonHostID'} + + + + +

LON Status Report $perlvar{'lonHostID'}

+

$date ($now)

+
    +
  1. Configuration
    2. +
  2. Machine Information
    3. +
  3. Temporary Files
    4. +
  4. Session Tokens
    5. +
  5. WebDAV Session Tokens
    6. +
  6. httpd
    7. +
  7. lonsql
    8. +
  8. lond
    9. +
  9. lonc
    10. +
  10. lonnet
    11. +
  11. Connections
    12. +
  12. Delayed Messages
    13. +
  13. Error Count
    14. +
+
+ +

Configuration

+

PerlVars

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

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($fh,"\n"); + } else { + &log($fh,"No spare hosts specified
\n"); } - print $fh "Cleaned up ".$cleaned." files (".$old." old checkout tokens)."; + return $fh; +} + +# --------------------------------------------------------------- clean out tmp +sub clean_tmp { + my ($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}):
'); + } + } + } +} + +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); +} # ------------------------------------------------------------ clean out lonIDs - print $fh '

Session Tokens

'; - $cleaned=0; - $active=0; - while ($fname=<$perlvar{'lonIDsDir'}/*>) { +sub clean_lonIDs { + my ($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); - $now=time; - $since=$now-$mtime; + my $now=time; + my $since=$now-$mtime; if ($since>$perlvar{'lonExpire'}) { $cleaned++; - print $fh "Unlinking $fname
"; + &log($fh,"Unlinking $fname
"); unlink("$fname"); } else { $active++; } - } - print $fh "

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

$active open session(s)

"; + &log($fh,"

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

"); + &log($fh,"

$active open session(s)

"); +} -# ----------------------------------------------------------------------- httpd +# ------------------------------------------------ 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 '

httpd

Access Log

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

Error Log

";
 
-    open (DFH,"tail -n25 /etc/httpd/logs/error_log|");
-    while ($line=) { 
-	print $fh "$line";
-	if ($line=~/\[error\]/) { $notices++; } 
-    };
-    close (DFH);
-    print $fh "
"; +# ----------------------------------------------------------------------- httpd +sub check_httpd_logs { + my ($fh)=@_; + if (open(PIPE,"./lchttpdlogs|")) { + while (my $line=) { + &log($fh,$line); + if ($line=~/\[error\]/) { $notices++; } + } + close(PIPE); + } &errout($fh); - - -# ---------------------------------------------------------------------- lonsql - - &checkon_daemon($fh,'lonsql',200000); - -# ------------------------------------------------------------------------ lond - - &checkon_daemon($fh,'lond',40000,1); - -# ------------------------------------------------------------------------ lonc - - &checkon_daemon($fh,'lonc',40000,1); - -# -------------------------------------------------------------------- lonhttpd - - &checkon_daemon($fh,'lonhttpd',40000); +} # ---------------------------------------------------------------------- lonnet - print $fh '

lonnet

Temp Log

';
-    print "checking logs\n";
+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 $perlvar{'lonDaemons'}/logs/lonnet.log|");
-	while ($line=) { 
-	    print $fh "$line";
-	};
+	while (my $line=) { 
+	    &log($fh,&encode_entities($line,'<>&"'));
+	}
 	close (DFH);
     }
-    print $fh "
Perm Log
";
+    &log($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";
-	};
+	while (my $line=) { 
+	    &log($fh,&encode_entities($line,'<>&"'));
+	}
 	close (DFH);
-    } else { print $fh "No perm log\n" }
+    } else { &log($fh,"No perm log\n") }
 
-    $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
+    my $fname="$perlvar{'lonDaemons'}/logs/lonnet.log";
+    &rotate_logfile($fname,$fh,'lonnet log');
 
-    my ($dev,$ino,$mode,$nlink,
-	$uid,$gid,$rdev,$size,
-	$atime,$mtime,$ctime,
-	$blksize,$blocks)=stat($fname);
+    &log($fh,"
");
+    &errout($fh);
+}
 
-    if ($size>40000) {
-	print $fh "Rotating logs ...
";
-	rename("$fname.2","$fname.3");
-	rename("$fname.1","$fname.2");
-	rename("$fname","$fname.1");
+sub rotate_other_logs {
+    my ($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 $fh "
"; - &errout($fh); # ----------------------------------------------------------------- Connections - - print $fh '

Connections

'; - print "testing connections\n"; - print $fh ""; - foreach $tryserver (sort(keys(%hostname))) { +sub test_connections { + my ($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("."); - $answer=reply("pong",$tryserver); + 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') { $warnings++; } + if ($answer eq 'con_lost') { + $bad++; + $warnings++; + } else { + $good++; #self connection + } } if ($answer =~ /con_lost/) { print(" $tryserver down\n"); } - print $fh "\n"; - + &log($fh,"\n"); } - print $fh "
$tryserver$result
$tryserver$result
"; - + &log($fh,""); + print "\n$good good, $bad bad connections\n"; &errout($fh); +} + + # ------------------------------------------------------------ Delayed messages +sub check_delayed_msg { + my ($fh)=@_; + &log($fh,'

Delayed Messages

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

Scanning Permanent Log

'); - print $fh '

Delayed Messages

'; - print "checking buffers\n"; + my $unsend=0; - print $fh '

Scanning Permanent Log

'; + my %hostname = &Apache::lonnet::all_hostnames(); + my $numhosts = scalar(keys(%hostname)); - $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 $fh "Failed: $time, $dserv, $dcmd
"; - $warnings++; - } - if ($sdf eq 'S') { $unsend--; } - if ($sdf eq 'D') { $unsend++; } + my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log"); + while (my $line=<$dfh>) { + my ($time,$sdf,$dserv,$dcmd)=split(/:/,$line); + if ($numhosts) { + next unless ($hostname{$dserv}); + } + 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 "Total unsend messages: $unsend

\n"; - $warnings=$warnings+5*$unsend; - if ($unsend) { $simplestatus{'unsend'}=$unsend; } - print $fh "

Outgoing Buffer

"; + &log($fh,"

Total unsend messages: $unsend

\n"); + if ($unsend > 0) { + $warnings=$warnings+5*$unsend; + } + if ($unsend) { $simplestatus{'unsend'}=$unsend; } + &log($fh,"

Outgoing Buffer

\n
");
+# list directory with delayed messages and remember offline servers
+    my %servers=();
     open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
-    while ($line=) { 
-	print $fh "$line
";
-    };
+    while (my $line=) {
+        my ($server)=($line=~/\.(\w+)$/);
+        if ($server) { $servers{$server}=1; }
+	&log($fh,&encode_entities($line,'<>&"'));
+    }
+    &log($fh,"
\n"); close (DFH); +# pong to all servers that have delayed messages +# this will trigger a reverse connection, which should flush the buffers + foreach my $tryserver (sort(keys(%servers))) { + if ($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'.
"); + } + } +} -# ------------------------------------------------------------------------- End - print $fh "\n"; +sub finish_logging { + my ($fh)=@_; + &log($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 "lon-status webpage updated\n"; + &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; } + $simplestatus{'time'}=time; } -if ($errors) { $simplestatus{'errors'}=$errors; } -if ($warnings) { $simplestatus{'warnings'}=$warnings; } -if ($notices) { $simplestatus{'notices'}=$notices; } -$simplestatus{'time'}=time; -rename ("$statusdir/newstatus.html","$statusdir/index.html"); -{ +sub log_simplestatus { + rename("$statusdir/newstatus.html","$statusdir/index.html"); + my $sfh=IO::File->new(">$statusdir/loncron_simple.txt"); foreach (keys %simplestatus) { print $sfh $_.'='.$simplestatus{$_}.'&'; @@ -574,21 +736,382 @@ rename ("$statusdir/newstatus.html","$st print $sfh "\n"; $sfh->close(); } -if ($totalcount>200) { - print "sending mail\n"; - $emailto="$perlvar{'lonAdmEMail'}"; - if ($totalcount>1000) { + +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; +} + +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; +} + +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; +} + +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; +} + +sub send_mail { + 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'}"; } - $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices"; - system("metasend -b -t $emailto -s '$subj' -f $statusdir/index.html -m text/html"); + my $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"; + } } -1; +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=`/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 $hostname.' |". + " mail -s '$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_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 && !$justiptables) { + &check_delayed_msg($fh); + &finish_logging($fh); + &log_simplestatus(); + &write_loncaparevs(); + &write_serverhomeIDs(); + &write_checksums(); + &write_hostips(); + if ($totalcount>200 && !$noemail) { &send_mail(); } + } +} +&main(); +1;