--- loncom/cgi/clusterstatus.pl	2003/07/31 15:35:02	1.9
+++ loncom/cgi/clusterstatus.pl	2003/08/01 19:20:26	1.14
@@ -3,7 +3,7 @@ $|=1;
 # The LearningOnline Network with CAPA
 # Cluster Status
 #
-# $Id: clusterstatus.pl,v 1.9 2003/07/31 15:35:02 www Exp $
+# $Id: clusterstatus.pl,v 1.14 2003/08/01 19:20:26 www Exp $
 
 use lib '/home/httpd/lib/perl/';
 use LONCAPA::Configuration;
@@ -19,6 +19,7 @@ my %connectionstatus=();
 my %perlvar=();
 
 my $mode;
+my $concount=0;
 
 sub select_form {
     my ($def,$name,%hash) = @_;
@@ -47,6 +48,7 @@ sub hidden {
 
 sub request {
     my ($local,$url,$cachetime)=@_;
+    $cachetime*=(0.5+rand);
     my $key=&key($local,$url);
     my $reply='';
     if ($FORM{$key.'_time'}) {
@@ -61,7 +63,7 @@ sub request {
 	    $reply='local_unknown'; 
 	} else {
 
-	    my $ua=new LWP::UserAgent(timeout => 20);
+	    my $ua=new LWP::UserAgent(timeout => 10);
     
 	    my $request=new HTTP::Request('GET',
 					  "http://".$hostname{$local}.$url);
@@ -91,10 +93,15 @@ sub connected {
     unless ($hostname{$remote}) { return 'remote_unknown'; }
     my $url='/cgi-bin/ping.pl?'.$remote;
 #
-# Slowly phase this in: if not cached, only do 10 percent of the cases 
+# Slowly phase this in: if not cached, only do 5 percent of the cases,
+# but always do the first five. 
 #
     unless ($FORM{&key($local,$url)}) {
-	unless (rand>0.9) { return 'not_yet'; }
+	unless (($concount<=5) || (rand>0.95)) { 
+	    return 'not_yet'; 
+	} else {
+	    $concount++;
+	}
     }
 #
 # Actually do the query
@@ -169,20 +176,36 @@ sub server {
     print &otherwindow($local,'/server-status','Server Status');
 }
 
+# ========================================================= Produce a green bar
+sub bar {
+    my $parm=shift;
+    my $number=int($parm+0.5);
+    print "<table><tr><td bgcolor='#225522'><font color='#225522'>";
+    for (my $i=0;$i<$number;$i++) {
+	print "+";
+    }
+    print "</font></table>";
+}
+
 # ========================================================== Show server status
 
 sub serverstatus {
-    my $local=shift;
+    my ($local,$trouble)=@_;
     print (<<ENDHEADER);
+<a name="$local" />
 <table width="100%" bgcolor="#225522" cellspacing="2" cellpadding="2" border="0">
 <tr><td bgcolor="#BBDDBB"><font color="#225522" face="arial"><b>
 $local $hostdom{$local}</b> <tt>($hostname{$local}; $hostrole{$local})</tt>
 <br />$domaindescription{$hostdom{$local}}
-</font></th></tr><tr><td bgcolor="DDDDBB"><font color="#225522">
+</font></th></tr><tr><td bgcolor="#DDDDBB"><font color="#225522">
 ENDHEADER
     &login($local);&server($local);&users($local);&versions($local);
     &loncron($local);&lond($local);&lonc($local);&runloncron($local);
-    print "</font></td></tr><tr><td bgcolor='#BBBBBB'>";
+    print "</font></td></tr>";
+    if ($trouble) {
+	print ("<tr><td bgcolor='#DDBBBB'><font color='#552222' size='+2'>$trouble</font></td></tr>");
+    }
+    print "<tr><td bgcolor='#BBBBBB'>";
 # load
     if (($host{$local.'_load_doomed'}>0.5) || ($mode eq 'load_doomed')) {
 	print "<br />Load: ".$host{$local.'_load'}
@@ -200,6 +223,19 @@ ENDHEADER
     if ($host{$local.'_mysql'}) {
 	print "<br />MySQL Database: ".$host{$local.'_mysql'}
     }
+# connections
+    if ($host{$local.'_notconnected'}) {
+	print "<br />Not connected: ";
+	foreach (split(/ /,$host{$local.'_notconnected'})) {
+	    if ($_) {
+		print " <a href='#$_'>$_</a>";
+	    }
+	}
+    }
+# errors
+    if ($host{$local.'_errors'}) {
+	print "<br />loncron errors: ".$host{$local.'_errors'};
+    }
     print "</td></tr></table><br />";
 }
 
@@ -256,7 +292,7 @@ foreach $pair (@pairs) {
 
 # ====================================================== Determine refresh rate
 
-my $refresh=(($FORM{'refresh'}=~/^\d+$/)?$FORM{'refresh'}:60);
+my $refresh=(($FORM{'refresh'}=~/^\d+$/)?$FORM{'refresh'}:120);
 if ($refresh<30) { $refresh=30; }
 my $starttime=time;
 
@@ -271,13 +307,14 @@ my %modes=('trouble' => 'Trouble',
 	   'load_doomed' => 'Doomed: Load',
 	   'unresponsive_doomed' => 'Doomed: Status could not be determined',
 	   'users' => 'User Report',
+	   'load' => 'Load Report',
 	   'connections' => 'Connections Matrix');
 
 $mode=$FORM{'mode'};
 unless ($modes{$mode}) { $mode='trouble'; }
 # ================================================================ Send Headers
 print "Content-type: text/html\n\n".
-    "<html><body bgcolor=#FFFFFF>\n";
+    "<html><body bgcolor='#FFFFFF'>\n";
 # -------------------- Read loncapa.conf (and by default, loncapa_apache.conf).
 my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
 %perlvar=%{$perlvarref};
@@ -323,8 +360,7 @@ delete $perlvar{'lonSqlAccess'}; # remov
     }
 }
 
-
-print "<h1>Cluster Status ".localtime()."</h1>";
+print "<img src='/adm/lonIcons/lonlogos.gif' align='right' /><h1>LON-CAPA Cluster Status ".localtime()."</h1>";
 print "<form name='prgstat'>\n".
 "<input type='text' name='progress' value='Starting ...' size='100' /><br />".
 "</form>\n";;
@@ -334,6 +370,10 @@ print 'Choose next report: '.&select_for
 
 # ==================================================== Main Loop over all Hosts
 
+my $maxusers=0;
+my $maxload=0;
+my $totalusers=0;
+
 foreach $local (sort keys %hostname) {
     $host{$local.'_unresponsive_doomed'}=0;
 # -- Check general status
@@ -347,6 +387,10 @@ foreach $local (sort keys %hostname) {
 	    $host{$local.'_loncron'}='Stale.';
 	    $host{$local.'_unresponsive_doomed'}++;
 	} else {
+	    $host{$local.'_loncron_doomed'}=$loncron{'notices'}
+	                                 +4*$loncron{'warnings'}
+	                               +100*$loncron{'errors'};
+	    $host{$local.'_errors'}=$loncron{'errors'};
 	}
     }
 # -- Check user status
@@ -358,8 +402,16 @@ foreach $local (sort keys %hostname) {
     } else {
 	$host{$local.'_users_doomed'}=$userstatus{'Active'};
 	$host{$local.'_users'}=$userstatus{'Active'};
+	unless ($host{$local.'_users'}) { $host{$local.'_users'}=0; }
+	if ($host{$local.'_users'}>$maxusers) { 
+	    $maxusers=$host{$local.'_users'};
+	}
+	$totalusers+=$host{$local.'_users'};
 	my ($sload,$mload,$lload)=split(/ /,$userstatus{'loadavg'});
 	$host{$local.'_load_doomed'}=$mload;
+	if ($mload>$maxload) { 
+	    $maxload=$mload;
+	}
 	$host{$local.'_load'}=$userstatus{'loadavg'};
     }
 # -- Check mysql status
@@ -424,15 +476,131 @@ foreach $local (sort keys %hostname) {
 	foreach (&doomedness($mode)) {
 	    &serverstatus($_);
 	}
+    } elsif ($mode eq 'connections') {
+	print 
+       "<table cellspacing='3' cellpadding='3' border='0' bgcolor='#225522'>".
+       "<tr><td bgcolor='#225522'>&nbsp;</td>";
+	foreach my $remote (sort keys %hostname) {
+	    print '<th bgcolor="#DDDDBB">'.$remote.'</th>';
+	}
+	print "</tr>\n";
+# connection matrix
+	foreach my $local (sort keys %hostname) {
+	    print '<tr><th bgcolor="#DDDDBB">'.$local.'</th>';
+	    foreach my $remote (sort keys %hostname) {
+		if ($connectionstatus{$local.'_TO_'.$remote} eq 'not_yet') {
+		    my $cellcolor='#FFFFFF';
+		    if ($local eq $remote) { $cellcolor='#DDDDDD'; }
+		    print '<td bgcolor="'.$cellcolor.'"><font color="#555522" size="-2">not yet tested</font></td>';
+		} elsif ($connectionstatus{$local.'_TO_'.$remote} eq 'ok') {
+		    my $cellcolor='#BBDDBB';
+		    if ($local eq $remote) { $cellcolor='#99DD99'; }
+		    print 
+'<td bgcolor="'.$cellcolor.'"><font color="#225522" face="arial"><b>ok</b></td>';
+		} else {
+		    my $cellcolor='#DDBBBB';
+		    if ($connectionstatus{$local.'_TO_'.$remote} eq 'local_error') {
+			if ($local eq $remote) { 
+			    $cellcolor='#DD88AA'; 
+			} else {
+			    $cellcolor='#DDAACC';
+			}
+		    } else {
+			if ($local eq $remote) { $cellcolor='#DD9999'; }
+		    }
+		    print 
+		  '<td bgcolor="'.$cellcolor.'"><font color="#552222" size="-2">'.
+		  $connectionstatus{$local.'_TO_'.$remote}.'<br />';
+		    &lonc($local); &lond($remote);
+		    print '</td>';
+		}
+	    }
+	    print "</tr>\n";
+	}
+	print "</table>";
+    } elsif ($mode eq 'users') {
+# Users
+	if ($maxusers) {
+	    my $factor=50/$maxusers;
+	    print "<h3>Total active user(s): $totalusers</h3>". 
+       "<table cellspacing='3' cellpadding='3' border='0' bgcolor='#225522'>";
+
+	    foreach $local (sort keys %hostname) {
+		if (defined($host{$local.'_users'})) {
+		    print 
+'<tr><th bgcolor="#BBDDBB"><font face="arial" color="#225522" size="+1">'.$local.
+			'</font></th><td bgcolor="#DDDDBB">';
+		    &users($local);
+		    print 
+	      '</td><td bgcolor="#DDDDBB"><font face="arial" color="#225522">'.
+	      $host{$local.'_users'}.'</font></td><td bgcolor="#DDDDBB"';
+		    &bar($factor*$host{$local.'_users'});
+		    print "</td></tr>\n";
+		}
+	    }
+	    print "</table>";
+	} else {
+	    print "No active users logged in.";
+	}
+    } elsif ($mode eq 'load') {
+# Load
+	if ($maxload) {
+	    my $factor=50/$maxload; 
+	    print
+       "<table cellspacing='3' cellpadding='3' border='0' bgcolor='#225522'>";
+	    foreach $local (sort keys %hostname) {
+		if (defined($host{$local.'_load_doomed'})) {
+		    print 
+'<tr><th bgcolor="#BBDDBB"><font face="arial" color="#225522" size="+1">'.
+                        $local.
+			'</font></th><td bgcolor="#DDDDBB">';
+		    &server($local);
+		    print 
+	      '</td><td bgcolor="#DDDDBB"><font face="arial" color="#225522">'.
+	      $host{$local.'_load_doomed'}.'</font></td><td bgcolor="#DDDDBB"';
+		    &bar($factor*$host{$local.'_load_doomed'});
+		    print "</td></tr>\n";
+		}
+	    }
+	    print "</table>";
+	} else {
+	    print "No workload.";
+	}
+    } elsif ($mode eq 'trouble') {
+	my $count=0;
+	foreach $local (sort keys %hostname) {
+	    my $trouble='';
+	    if ($host{$local.'_errors'}) {
+		$trouble='Has loncron errors.<br />';
+	    } elsif ($host{$local.'_loncron_doomed'}>600) {
+		$trouble='High loncron count.<br />';
+	    }
+	    if ($host{$local.'_load_doomed'}>5) {
+		$trouble='High load.<br />';
+	    }
+	    if ($host{$local.'_users_doomed'}>200) {
+		$trouble='High user volume.<br />';
+	    }
+	    if ($host{$local.'_mysql_doomed'}>1) {
+		$trouble='MySQL database apparently offline.<br />';
+	    }
+	    if ($host{$local.'_checkrpms_doomed'}>100) {
+		$trouble='RPMs outdated.<br />';
+	    }
+	    if ($trouble) { $count++; &serverstatus($local,$trouble); }
+	}
+	unless ($count) { print "No mayor trouble."; }
     }
 # ============================================================== Close, refresh
 print "</form><script>";
 $runtime=time-$starttime;
-if ($runtime>=$refresh) {
-    print 'document.status.submit();';
+if (($refresh-$runtime)<30) {
+    print "setTimeout('document.status.submit()',30000);\n".
+          "document.prgstat.progress.value='Will automatically refresh.'";
 } else {
     $refreshtime=int(1000*($refresh-$runtime));
-    print "setTimeout('document.status.submit()',$refreshtime);";
+    print "setTimeout('document.status.submit()',$refreshtime);\n".
+          "document.prgstat.progress.value='Will automatically refresh ($refresh secs refresh cycle)'";
 }
 print "</script></body></html>";
 exit 0;
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>500 Internal Server Error</title>
</head><body>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error or
misconfiguration and was unable to complete
your request.</p>
<p>Please contact the server administrator at 
 root@localhost to inform them of the time this error occurred,
 and the actions you performed just before this error.</p>
<p>More information about this error may be available
in the server error log.</p>
</body></html>