=head1 NAME

B<mknb> - creates a network boot root image for node discovery and flashing

=head1 SYNOPSIS

B<mknb> I<arch>


=head1 DESCRIPTION

The B<mknb> command is run by xCAT automatically, when xCAT is installed on the management node.
It creates a network boot root image (used for node discovery, BMC programming, and flashing)
for the same architecture that the management node is.  So you normally do not need to run the B<mknb>
command yourself.   

If you do run B<mknb> to add custom utilities to your boot root image, and you have an xCAT Hierarchical Cluster with service nodes that each have a local /tftpboot directory (site sharedtftp=0), you will also need to copy the generated root image to each service node.


Presently, only the arch x86_64 is supported.

=head1 OPTIONS

=over 12

=item I<arch>

The hardware architecture for which to build the boot image: x86_64

=back

=head1 RETURN VALUE

0 The command completed successfully.

1 An error has occurred.


=head1 SEE ALSO

L<makedhcp(8)|makedhcp.8>