Annotation of loncom/cgi/clusterstatus.pl, revision 1.5
1.1 www 1: #!/usr/bin/perl
2: $|=1;
3: # The LearningOnline Network with CAPA
4: # Cluster Status
5: # (Versions
6: # (Running loncron
7: # 09/06/01 Gerd Kortemeyer)
1.2 www 8: # 02/18/02,02/19/02 Gerd Kortemeyer)
1.3 harris41 9: # 5/11/2002 Scott Harrison
10:
11: use lib '/home/httpd/lib/perl/';
12: use LONCAPA::Configuration;
13:
1.1 www 14: use LWP::UserAgent();
15: use HTTP::Headers;
16: use IO::File;
1.2 www 17: use Net::Ping;
18:
19: sub online {
20: my $host=shift;
1.5 ! www 21: return 1;
! 22: # ping is broken
1.2 www 23: my $p=Net::Ping->new("tcp",10);
24: my $online=$p->ping("$host");
25: $p->close();
26: undef ($p);
27: return $online;
28: }
1.1 www 29:
30: sub connected {
31: my ($local,$remote)=@_;
32: $local=~s/\W//g;
33: $remote=~s/\W//g;
34:
35: unless ($hostname{$local}) { return 'local_unknown'; }
36: unless ($hostname{$remote}) { return 'remote_unknown'; }
37:
1.2 www 38: unless (&online($hostname{$local})) { return 'local_offline'; }
39:
1.1 www 40: my $ua=new LWP::UserAgent;
41:
42: my $request=new HTTP::Request('GET',
43: "http://".$hostname{$local}.'/cgi-bin/ping.pl?'.$remote);
44:
45: my $response=$ua->request($request);
46:
1.2 www 47: unless ($response->is_success) { return 'local_error'; }
1.1 www 48:
49: my $reply=$response->content;
50: $reply=(split("\n",$reply))[0];
51: $reply=~s/\W//g;
52: if ($reply ne $remote) { return $reply; }
53: return 'ok';
54: }
55:
56:
57: print "Content-type: text/html\n\n".
58: "<html><body bgcolor=#FFFFFF>\n";
1.4 harris41 59: # -------------------- Read loncapa.conf (and by default, loncapa_apache.conf).
60: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.3 harris41 61: my %perlvar=%{$perlvarref};
62: undef $perlvarref; # remove since sensitive and not needed
63: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
64: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
1.1 www 65:
66: # ------------------------------------------------------------- Read hosts file
67: {
68: my $config=IO::File->new("$perlvar{'lonTabDir'}/hosts.tab");
69:
1.2 www 70: $total=0;
1.1 www 71: while (my $configline=<$config>) {
72: my ($id,$domain,$role,$name,$ip)=split(/:/,$configline);
73: $hostname{$id}=$name;
74: $hostdom{$id}=$domain;
75: $hostrole{$id}=$role;
76: $hostip{$id}=$ip;
1.2 www 77: $total++;
1.1 www 78: if (($role eq 'library') && ($id ne $perlvar{'lonHostID'})) {
79: $libserv{$id}=$name;
80: }
81: }
82: }
83:
1.2 www 84: print
85: "<h1>Cluster Status</h1>";
86: print "Please be patient while building cluster status ...<p>\n";
87: $table='';
88:
89: $table.="<table border=2><tr><th rowspan=2>From (local)</th>".
90: "<th colspan=$total>To (remote)</th></tr><tr>";
91: foreach $remote (sort keys %hostname) {
92: $table.="<th";
93: if ($remote eq $perlvar{'lonHostID'}) {
94: $table.=" bgcolor=#CCFFBB";
95: } else {
96: if ($libserv{$remote}) { $table.=" bgcolor=#FFFF99"; }
97: }
98: $table.=
99: "><a href=http://".$hostname{$remote}."/lon-status/>$remote</a></th>";
100: }
101: $table.="</tr>";
102: foreach $local (sort keys %hostname) {
103: print "Checking $local ";
104: $table.="<tr><td";
105: if ($local eq $perlvar{'lonHostID'}) {
106: $table.=" bgcolor=#CCFFBB";
107: } else {
108: if ($libserv{$local}) { $table.=" bgcolor=#FFFF99"; }
109: }
110: $table.=
111: "><b><a href=http://".$hostname{$local}."/lon-status/>$local</a></b><br>".
112: $hostrole{$local}.' '.$hostdom{$local}.'<br>'.
113: "<tt><a href=http://".$hostname{$local}."/server-status/>".
114: $hostname{$local}."</a></tt><br>".
115: "<a href=http://".$hostname{$local}."/cgi-bin/loncron.pl>New Report</a>".
116: "</td>";
117: if (&online($hostname{$local})) {
118: foreach $remote (sort keys %hostname) {
119: $status=&connected($local,$remote);
120: if ($status eq 'ok') {
121: $table.="<td";
122: if ($libserv{$remote}) {
123: if ($libserv{$local}) {
124: $table.=" bgcolor=#FFFF44";
125: } else {
126: $table.=" bgcolor=#FFFF99";
127: }
128: } elsif ($libserv{$local}) {
129: $table.=" bgcolor=#FFFF99";
130: }
131: $table.="><b><font color=#00FF00>OK</font></b></td>";
132: print ".";
133: } else {
134: print "X";
135: $table.="<td><b><font color=#FF0000>".$status."</font></b><br>".
136: "<a href=http://".$hostname{$local}.
137: "/lon-status/loncstatus.txt>lonc</a>";
138: if (&online($hostname{$remote})) {
139: $table.=" <a href=http://".$hostname{$remote}.
140: "/lon-status/londstatus.txt>lond</a>".
141: "</td>";
142: } else {
143: $table.=' offline';
144: }
145:
146: }
147: }
148: } else {
149: print "offline";
150: $table.='<th colspan='.$total.'><font color=#FF0000>Offline</font></th>';
151: }
152: $table.="</tr>\n";
153: print "<br>\n";
154: }
155: $table.="</table>";
156: print $table;
1.1 www 157: print "</body></html>";
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