New tool to collate all information to form a good error report for NDB.

It will copy from each node the logs and trace dumps (if any) and create
a tarball. Having this tarball attached to a bug report greatly helps
troubleshooting and avoids user error.

It will (optionally) also get the filesystem.


ndb/tools/ndb_error_reporter:
  New BitKeeper file ``ndb/tools/ndb_error_reporter''

ndb/tools/ndb_error_reporter

+#!/usr/bin/perl -w
+
+use strict;
+
+if(@ARGV < 1)
+{
+    print STDERR "Usage:\n";
+    print STDERR "\tndb_error_reporter config.ini [username] [--fs]\n\n";
+    print STDERR "\tusername is a user that you can use to ssh into\n";
+    print STDERR "\t  all of your nodes with.\n\n";
+    print STDERR "\t--fs means include the filesystems in the report\n";
+    print STDERR "\t WARNING: This may require a lot of disk space.\n";
+    print STDERR "\t          Only use this option when asked to.\n\n";
+    exit(1);
+}
+
+my $config_file= $ARGV[0];
+my $config_get_fs= 0;
+my $config_username= '';
+if(defined($ARGV[1]))
+{
+    $config_get_fs= 1 if $ARGV[1] eq '--fs';
+    $config_username= $ARGV[1].'@' if $ARGV[1] ne '--fs';
+    $config_get_fs= (defined $ARGV[2] && $ARGV[2] eq '--fs')?1:$config_get_fs;
+}
+
+if(!stat($config_file))
+{
+    print STDERR "Cannot open configuration file.\n\n";
+    exit(1);
+}
+
+my @nodes= split ' ',`ndb_config --config-file=$ARGV[0] --nodes --query=id --type=ndbd`;
+
+push @nodes, split ' ',`ndb_config --config-file=$ARGV[0] --nodes --query=id --type=ndb_mgmd`;
+
+sub config {
+    my $nodeid= shift;
+    my $query= shift;
+    my $res= `ndb_config --config-file=$ARGV[0] --id=$nodeid --query=$query`;
+    chomp $res;
+    $res;
+}
+
+my @t= localtime();
+my $reportdir= sprintf('ndb_error_report_%u%02u%02u%02u%02u%02u',
+		       ($t[5]+1900),($t[4]+1),$t[3],$t[2],$t[1],$t[0]);
+
+if(stat($reportdir) || stat($reportdir.'tar.bz2'))
+{
+    print STDERR "It looks like another ndb_error_report process is running.\n";
+    print STDERR "If that is not the case, remove the ndb_error_report directory";
+    print STDERR " and run ndb_error_report again.\n\n";
+    exit(1);
+}
+
+mkdir($reportdir);
+
+foreach my $node (@nodes)
+{
+    print "\n\n Copying data from node $node".
+	(($config_get_fs)?" with filesystem":"").
+	"\n\n";
+    my $recurse= ($config_get_fs)?'-r ':'';
+    system 'scp '.$recurse.$config_username.config($node,'host').
+	':'.config($node,'datadir')."/ndb_".$node."* ".
+	"$reportdir/\n";
+}
+
+print "\n\n Copying configuration file...\n\n\t$config_file\n\n";
+system "cp $config_file $reportdir/";
+
+my $r = system 'bzip2 2>&1 > /dev/null  < /dev/null';
+my $outfile;
+if($r==0)
+{
+    $outfile= "$reportdir.tar.bz2";
+    system "tar c $reportdir|bzip2 > $outfile";
+}
+else
+{
+    $outfile= "$reportdir.tar.gz";
+    system "tar c $reportdir|gzip > $outfile";
+}
+
+system "rm -rf $reportdir";
+
+print "\n\nPlease attach $outfile to your error report\n\n";