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Diff for /loncom/loncron between versions 1.4 and 1.9

-version 1.4, 2000/02/08 17:54:11
+version 1.9, 2000/12/08 23:33:36
  Line 200  while ($line=<DFH>) {
  close (DFH);
  print $fh "</pre>";
  &errout($fh);
+ # ------------------------------------------------------------------------ lonsql
+ if ($perlvar{'lonRole'} eq "library" && 1==0) {
+     print $fh '<hr><a name="lond"><h2>lonsql</h2><h3>Log</h3><pre>';
+     if (-e "$perlvar{'lonDaemons'}/logs/lonsql.log"){
+ 	open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lonsql.log|");
+ 	while ($line=<DFH>) {
+ 	    print $fh "$line";
+ 	    if ($line=~/INFO/) { $notices++; }
+ 	    if ($line=~/WARNING/) { $notices++; }
+ 	    if ($line=~/CRITICAL/) { $warnings++; }
+ 	};
+ 	close (DFH);
+     }
+     print $fh "</pre>";
+     my $lonsqlfile="$perlvar{'lonDaemons'}/logs/lonsql.pid";
+     if (-e $lonsqlfile) {
+ 	my $lfh=IO::File->new("$lonsqlfile");
+ 	my $lonsqlpid=<$lfh>;
+ 	chomp($lonsqlpid);
+ 	if (kill 0 => $lonsqlpid) {
+ 	    print $fh "<h3>lonsql at pid $lonsqlpid responding</h3>";
+ 	} else {
+ 	    $errors++; $errors++;
+ 	    print $fh "<h3>lonsql at pid $lonsqlpid not responding</h3>";
+ 	}
+     } else {
+ 	$errors++;
+ 	print $fh "<h3>lonsql not running, trying to start</h3>";
+ 	system("$perlvar{'lonDaemons'}/lonsql");
+ 	sleep 120;
+ 	if (-e $lonsqlfile) {
+ 	    print $fh "Seems like it started ...<p>";
+ 	    my $lfh=IO::File->new("$lonsqlfile");
+ 	    my $lonsqlpid=<$lfh>;
+ 	    chomp($lonsqlpid);
+ 	    sleep 30;
+ 	    if (kill 0 => $lonsqlpid) {
+ 		print $fh "<h3>lonsql at pid $lonsqlpid responding</h3>";
+ 	    } else {
+ 		$errors++; $errors++;
+ 		print $fh "<h3>lonsql at pid $lonsqlpid not responding</h3>";
+ 		print $fh "Give it one more try ...<p>";
+ 		system("$perlvar{'lonDaemons'}/lonsql");
+ 		sleep 120;
+ 	    }
+ 	} else {
+ 	    print $fh "Seems like that did not work!<p>";
+ 	    $errors++;
+ 	}
+ 	if (-e "$perlvar{'lonDaemons'}/logs/lonsql.log"){
+ 	    print $fh "<p><pre>";
+ 	    open (DFH,"tail -n100 $perlvar{'lonDaemons'}/logs/lonsql.log|");
+ 	    while ($line=<DFH>) {
+ 		print $fh "$line";
+ 		if ($line=~/WARNING/) { $notices++; }
+ 		if ($line=~/CRITICAL/) { $notices++; }
+ 	    };
+ 	    close (DFH);
+ 	    print $fh "</pre>";
+ 	}
+     }
+     $fname="$perlvar{'lonDaemons'}/logs/lonsql.log";
+     my ($dev,$ino,$mode,$nlink,
+ 	$uid,$gid,$rdev,$size,
+ 	$atime,$mtime,$ctime,
+ 	$blksize,$blocks)=stat($fname);
+     if ($size>40000) {
+ 	print $fh "Rotating logs ...<p>";
+ 	rename("$fname.2","$fname.3");
+ 	rename("$fname.1","$fname.2");
+ 	rename("$fname","$fname.1");
+     }
+     &errout($fh);
+ }
  # ------------------------------------------------------------------------ lond
  print $fh '<hr><a name="lond"><h2>lond</h2><h3>Log</h3><pre>';
- Line 218  print $fh "</pre>";
+ Line 303  print $fh "</pre>";
  my $londfile="$perlvar{'lonDaemons'}/logs/lond.pid";
- if (-e $londfile) {
+ my $restartflag=1;
+ if (-e $londfile) {
     my $lfh=IO::File->new("$londfile");
     my $londpid=<$lfh>;
     chomp($londpid);
     if (kill 0 => $londpid) {
        print $fh "<h3>lond at pid $londpid responding</h3>";
+       $restartflag=0;
     } else {
-       $errors++; $errors++;
+       $errors++;
        print $fh "<h3>lond at pid $londpid not responding</h3>";
+       # Intelligently handle this.
+       # Possibility #1: there is no process
+       # Solution: remove .pid file and restart
+       if (getpgrp($londpid)==-1) {
+ 	  unlink($londfile);
+ 	  $restartflag=1;
+       }
+       else {
+       # Possibility #2: there is a zombie process
+       # Possibility #3: there is a live process that is not responding
+       #                 for an unknown reason
+       # Solution: kill process, remove .pid and restart
+ 	  `killall -9 lond`;
+ 	  unlink($londfile);
+ 	  $restartflag=1;
+       }
+       print $fh
+ 	  "<h3>Deciding to clean up stale .pid file and restart lond</h3>";
     }
- } else {
+ }
+ if ($restartflag==1) {
     $errors++;
     print $fh "<h3>lond not running, trying to start</h3>";
     system("$perlvar{'lonDaemons'}/lond");
- Line 298  print $fh "</pre>";
+ Line 404  print $fh "</pre>";
  my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
+ $restartflag=1;
  if (-e $loncfile) {
     my $lfh=IO::File->new("$loncfile");
     my $loncpid=<$lfh>;
- Line 305  if (-e $loncfile) {
+ Line 412  if (-e $loncfile) {
     if (kill 0 => $loncpid) {
        print $fh "<h3>lonc at pid $loncpid responding, sending USR1</h3>";
        kill USR1 => $loncpid;
+       $restartflag=0;
     } else {
-       $errors++; $errors++;
+       $errors++;
        print $fh "<h3>lonc at pid $loncpid not responding</h3>";
+       # Intelligently handle this.
+       # Possibility #1: there is no process
+       # Solution: remove .pid file and restart
+       if (getpgrp($loncpid)==-1) {
+ 	  unlink($loncfile);
+ 	  $restartflag=1;
+       }
+       else {
+       # Possibility #2: there is a zombie process
+       # Possibility #3: there is a live process that is not responding
+       #                 for an unknown reason
+       # Solution: kill process, remove .pid and restart
+ 	  `killall -9 lonc`;
+ 	  unlink($loncfile);
+ 	  $restartflag=1;
+       }
+       print $fh
+ 	  "<h3>Deciding to clean up stale .pid file and restart lonc</h3>";
     }
- } else {
+ }
+ if ($restartflag==1) {
     $errors++;
     print $fh "<h3>lonc not running, trying to start</h3>";
     system("$perlvar{'lonDaemons'}/lonc");

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Removed from v.1.4
changed lines
	Added in v.1.9