xcat-core/xCAT-client-2.0/pods/man8/makehosts.8.pod
2008-05-03 11:25:22 +00:00

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=head1 NAME
B<makedns> - sets up /etc/hosts from the xCAT hosts table.
=head1 SYNOPSIS
B<makehosts> [B<-n>] [I<noderange>]
B<makehosts> {B<-h>|B<--help>}
=head1 DESCRIPTION
B<makehosts> updates the /etc/hosts file based on entries in the hosts table in the xCAT database.
If your node hostnames and IP addresses follow a regular pattern, you can use just a few regular expressions
in the hosts table and then easily generate /etc/hosts using makehosts.
=head1 OPTIONS
=over 6
=item B<-n>
Completely replace the /etc/hosts file, losing any previous content. If this option is not specified,
it will only replace the lines in the file that correspond to the nodes in the specified noderange.
=back
=head1 EXAMPLES
=over 2
=item *
If the xCAT hosts table contains:
"compute","|node(\d+)|1.2.3.($1+0)|","|(.*)|($1).cluster.net|",,
Assuming the group "compute" contains node01, node02, etc., then in /etc/hosts they will be given
IP addresses of 1.2.3.1, 1.2.3.2, etc.
=back
=head1 SEE ALSO
hosts(5)
=head1 AUTHOR
Egan Ford E<lt>egan@us.ibm.comE<gt>