deda80a245
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@1980 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
110 lines
2.6 KiB
Plaintext
110 lines
2.6 KiB
Plaintext
=head1 NAME
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B<makedhcp> - Creates new dhcp configuration files and updates live dhcp configuration using omapi.
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=head1 SYNOPSIS
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B<makedhcp> B<-n>
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B<makedhcp> B<-a>
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B<makedhcp> B<-a -d>
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B<makedhcp> B<-d> I<noderange>
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B<makedhcp> I<noderange> [B<-s> I<statements>]
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B<makedhcp> [I<-h|--help>]
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=head1 DESCRIPTION
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The B<makedhcp> command configures the DHCP daemon on the local system so that xCAT
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can manage the nodes of the cluster during discovery, full install, diskless booting, and normal booting.
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With the B<-n> option, B<makedhcp> will create a dhcpd.conf file, including certain general parameters
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such as a dynamic range and omapi configuration.
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With a noderange or the B<-a> option, makedhcp will inject configuration data (via omapi) pertinent to the
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specified nodes that immediately takes effect without a restart of DHCP.
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If the B<-d> flag is used with the B<-a> flag then it will delete all nodes' dhcp host definitions.
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The B<-d> flag followed by a I<noderange> will delete the dhcp host definitons for the noderange.
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The B<makedhcp> command also uses the following attributes from the xCAT database:
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B<site.dhcpinterfaces>, B<site.domain>, B<networks.dynamicrange>, B<networks.dhcpserver>. See
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the xcatdb man page for details about the database attributes.
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=head1 OPTIONS
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=over 12
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=item B<-n>
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Create a new dhcpd.conf file with a network statement for each network dhcpd should listen on.
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The B<makedhcp> command will automatically restart dhcpd after this operation.
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=item B<-a>
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Define all nodes to the DHCP server. (Will only add nodes that can be reached, network-wise, by
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this DHCP server.) The dhcpd daemon does not have to be restarted after this.
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=item I<noderange>
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Add the specified nodes to the DHCP server configuration.
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=item [B<-s> I<statements>]
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For the input noderange, the argument will be interpreted like dhcpd.conf text.
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=item B<-a -d>
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Delete all nodes from the DHCP server configuration.
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=item B<-d> I<noderange>
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Delete all nodes in the noderange from the DHCP server configuration.
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=item B<-h>
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Display usage message.
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=back
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=head1 RETURN VALUE
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0 The command completed successfully.
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1 An error has occurred.
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=head1 EXAMPLES
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=over 3
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=item 1.
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Add the network definitions to DHCP by updating the dhcpd.conf file:
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makedhcp -n
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=item 2.
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Define all nodes to the dhcp server:
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makedhcp -a
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=item 3.
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Will cause dhcp on the next request to set root-path appropriately for only node5. Note some characters (e.g. ") must be doubly escaped (once for the shell, and once for the OMAPI layer).
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makedhcp node5 -s 'option root-path \"172.16.0.1:/install/freebsd6.2/x86_64\";'
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=back
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=head1 SEE ALSO
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L<noderange(3)|noderange.3>
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