--- loncom/loncron 2004/06/09 13:30:41 1.53
+++ loncom/loncron 2006/10/25 21:33:54 1.68
@@ -2,7 +2,7 @@
# Housekeeping program, started by cron, loncontrol and loncron.pl
#
-# $Id: loncron,v 1.53 2004/06/09 13:30:41 albertel Exp $
+# $Id: loncron,v 1.68 2006/10/25 21:33:54 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -45,13 +45,13 @@ my $statusdir="/home/httpd/html/lon-stat
# -------------------------------------------------- Non-critical communication
sub reply {
- my ($cmd,$server)=@_;
- my $peerfile="$perlvar{'lonSockDir'}/$server";
+ my ($cmd,$server,$hostname)=@_;
+ my $peerfile="$perlvar{'lonSockDir'}/".$hostname->{$server};
my $client=IO::Socket::UNIX->new(Peer =>"$peerfile",
Type => SOCK_STREAM,
Timeout => 10)
or return "con_lost";
- print $client "$cmd\n";
+ print $client "sethost:$server:$cmd\n";
my $answer=<$client>;
chomp($answer);
if (!$answer) { $answer="con_lost"; }
@@ -92,14 +92,13 @@ sub start_daemon {
rename("$error_fname","$error_fname.1");
}
system("$perlvar{'lonDaemons'}/$progname 2>$perlvar{'lonDaemons'}/logs/${daemon}_errors");
- sleep 2;
+ sleep 1;
if (-e $pidfile) {
&log($fh,"<p>Seems like it started ...</p>");
my $lfh=IO::File->new("$pidfile");
my $daemonpid=<$lfh>;
chomp($daemonpid);
- sleep 2;
- if (kill 0 => $daemonpid) {
+ if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
return 1;
} else {
return 0;
@@ -111,10 +110,11 @@ sub start_daemon {
}
sub checkon_daemon {
- my ($fh,$daemon,$maxsize,$sendusr1,$args)=@_;
+ my ($fh,$daemon,$maxsize,$send,$args)=@_;
+ my $result;
&log($fh,'<hr /><a name="'.$daemon.'" /><h2>'.$daemon.'</h2><h3>Log</h3><p style="white-space: pre;"><tt>');
- printf("%-10s ",$daemon);
+ printf("%-15s ",$daemon);
if (-e "$perlvar{'lonDaemons'}/logs/$daemon.log"){
open (DFH,"tail -n25 $perlvar{'lonDaemons'}/logs/$daemon.log|");
while (my $line=<DFH>) {
@@ -135,13 +135,20 @@ sub checkon_daemon {
my $lfh=IO::File->new("$pidfile");
$daemonpid=<$lfh>;
chomp($daemonpid);
- if (kill 0 => $daemonpid) {
+ if ($daemonpid =~ /^\d+$/ && kill 0 => $daemonpid) {
&log($fh,"<h3>$daemon at pid $daemonpid responding");
- if ($sendusr1) { &log($fh,", sending USR1"); }
+ if ($send) { &log($fh,", sending $send"); }
&log($fh,"</h3>");
- if ($sendusr1) { kill USR1 => $daemonpid; }
+ if ($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 {
$errors++;
&log($fh,"<h3>$daemon at pid $daemonpid not responding</h3>");
@@ -152,17 +159,20 @@ sub checkon_daemon {
if ($restartflag==1) {
$simplestatus{$daemon}='off';
$errors++;
+ my $kadaemon=$daemon;
+ if ($kadaemon eq 'lonmemcached') { $kadaemon='memcached'; }
&log($fh,'<br><font color="red">Killall '.$daemon.': '.
- `killall $daemon 2>&1`.' - ');
- sleep 2;
+ `killall $kadaemon 2>&1`.' - ');
+ sleep 1;
&log($fh,unlink($pidfile).' - '.
- `killall -9 $daemon 2>&1`.
+ `killall -9 $kadaemon 2>&1`.
'</font><br>');
&log($fh,"<h3>$daemon not running, trying to start</h3>");
if (&start_daemon($fh,$daemon,$pidfile,$args)) {
&log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
$simplestatus{$daemon}='restarted';
+ $result = 'started';
print "started\n";
} else {
$errors++;
@@ -172,8 +182,10 @@ sub checkon_daemon {
if (&start_daemon($fh,$daemon,$pidfile,$args)) {
&log($fh,"<h3>$daemon at pid $daemonpid responding</h3>");
$simplestatus{$daemon}='restarted';
+ $result = 'started';
print "started\n";
} else {
+ $result = 'failed';
print " failed\n";
$simplestatus{$daemon}='failed';
$errors++; $errors++;
@@ -210,6 +222,7 @@ sub checkon_daemon {
}
&errout($fh);
+ return $result;
}
# --------------------------------------------------------------------- Machine
@@ -271,6 +284,16 @@ sub log_machine_info {
if ($psproc>200) { $notices++; }
if ($psproc>250) { $notices++; }
+ &log($fh,"<h3>distprobe</h3>");
+ &log($fh,"<pre>");
+ open(DSH,"$perlvar{'lonDaemons'}/distprobe |");
+ while (my $line=<DSH>) {
+ &log($fh,&encode_entities($line,'<>&"'));
+ $psproc++;
+ }
+ close(DSH);
+ &log($fh,"</pre>");
+
&errout($fh);
}
@@ -463,7 +486,7 @@ sub test_connections {
foreach my $tryserver (sort(keys(%{$hostname}))) {
print(".");
my $result;
- my $answer=reply("pong",$tryserver);
+ my $answer=&reply("ping",$tryserver,$hostname);
if ($answer eq "$tryserver:$perlvar{'lonHostID'}") {
$result="<b>ok</b>";
$good++;
@@ -488,7 +511,7 @@ sub test_connections {
# ------------------------------------------------------------ Delayed messages
sub check_delayed_msg {
- my ($fh)=@_;
+ my ($fh,$hostname)=@_;
&log($fh,'<hr /><a name="delayed" /><h2>Delayed Messages</h2>');
print "checking buffers\n";
@@ -513,13 +536,22 @@ sub check_delayed_msg {
if ($unsend) { $simplestatus{'unsend'}=$unsend; }
&log($fh,"<h3>Outgoing Buffer</h3>\n<pre>");
-
+# list directory with delayed messages and remember offline servers
+ my %servers=();
open (DFH,"ls -lF $perlvar{'lonSockDir'}/delayed|");
- while (my $line=<DFH>) {
+ while (my $line=<DFH>) {
+ my ($server)=($line=~/\.(\w+)$/);
+ if ($server) { $servers{$server}=1; }
&log($fh,&encode_entities($line,'<>&"'));
}
&log($fh,"</pre>\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 (keys %servers) {
+ my $answer=&reply("pong",$tryserver,$hostname);
+ &log($fh,"Pong to $tryserver: $answer");
+ }
}
sub finish_logging {
@@ -554,12 +586,12 @@ sub log_simplestatus {
sub send_mail {
print "sending mail\n";
my $emailto="$perlvar{'lonAdmEMail'}";
- if ($totalcount>1000) {
+ if ($totalcount>2500) {
$emailto.=",$perlvar{'lonSysEMail'}";
}
my $subj="LON: $perlvar{'lonHostID'} E:$errors W:$warnings N:$notices";
- my $result=system("metasend -b -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
+ my $result=system("metasend -b -S 4000000 -t $emailto -s '$subj' -f $statusdir/index.html -m text/html >& /dev/null");
if ($result != 0) {
$result=system("mail -s '$subj' $emailto < $statusdir/index.html");
}
@@ -581,18 +613,24 @@ Options:
running, do not send emails do not
check the lonc/d connections, do not
generate lon-status
+ --justreload Only tell the daemons to reload the config files,
+ do not send emails do not
+ check if the daemons are running, do not
+ generate lon-status
USAGE
}
# ================================================================ Main Program
sub main () {
- my ($oldlonc,$help,$justcheckdaemons,$noemail,$justcheckconnections);
+ my ($oldlonc,$help,$justcheckdaemons,$noemail,$justcheckconnections,
+ $justreload);
&GetOptions("help" => \$help,
"oldlonc" => \$oldlonc,
"justcheckdaemons" => \$justcheckdaemons,
"noemail" => \$noemail,
- "justcheckconnections" => \$justcheckconnections
+ "justcheckconnections" => \$justcheckconnections,
+ "justreload" => \$justreload
);
if ($help) { &usage(); return; }
# --------------------------------- Read loncapa_apache.conf and loncapa.conf
@@ -633,8 +671,9 @@ sub main () {
my (%hostname,%hostdom,%hostrole,%spareid);
while (my $configline=<$config>) {
next if ($configline =~ /^(\#|\s*\$)/);
- my ($id,$domain,$role,$name,$ip,$domdescr)=split(/:/,$configline);
- if ($id && $domain && $role && $name && $ip) {
+ my ($id,$domain,$role,$name)=split(/:/,$configline);
+ if ($id && $domain && $role && $name) {
+ $name=~s/\s//g;
$hostname{$id}=$name;
$hostdom{$id}=$domain;
$hostrole{$id}=$role;
@@ -661,7 +700,7 @@ sub main () {
my $fh;
- if (!$justcheckdaemons && !$justcheckconnections) {
+ if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
$fh=&start_logging(\%hostdom,\%hostrole,\%hostname,\%spareid);
&log_machine_info($fh);
@@ -670,19 +709,28 @@ sub main () {
&check_httpd_logs($fh);
&rotate_lonnet_logs($fh);
}
- if (!$justcheckconnections) {
+ if (!$justcheckconnections && !$justreload) {
&checkon_daemon($fh,'lonsql',200000);
- &checkon_daemon($fh,'lond',40000,1);
+ if ( &checkon_daemon($fh,'lond',40000,'USR1') eq 'running') {
+ &checkon_daemon($fh,'lond',40000,'USR2');
+ }
my $args='new';
if ($oldlonc) { $args = ''; }
- &checkon_daemon($fh,'lonc',40000,1,$args);
+ &checkon_daemon($fh,'lonc',40000,'USR1',$args);
&checkon_daemon($fh,'lonhttpd',40000);
+ &checkon_daemon($fh,'lonmemcached',40000);
+ }
+ if ($justreload) {
+ &checkon_daemon($fh,'lond',40000,'USR2');
+ my $args='new';
+ if ($oldlonc) { $args = ''; }
+ &checkon_daemon($fh,'lonc',40000,'USR2',$args);
}
- if (!$justcheckdaemons) {
+ if ($justcheckconnections) {
&test_connections($fh,\%hostname);
}
- if (!$justcheckdaemons && !$justcheckconnections) {
- &check_delayed_msg($fh);
+ if (!$justcheckdaemons && !$justcheckconnections && !$justreload) {
+ &check_delayed_msg($fh,\%hostname);
&finish_logging($fh);
&log_simplestatus();