daa650686d
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/branches/2.8@16324 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
155 lines
4.3 KiB
Plaintext
155 lines
4.3 KiB
Plaintext
=head1 NAME
|
|
|
|
B<makedhcp> - Creates and updates DHCP configuration files.
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
B<makedhcp> B<-n> [B<-l>|B<--localonly>]
|
|
|
|
B<makedhcp> B<-a> [B<-l>|B<--localonly>]
|
|
|
|
B<makedhcp> B<-a -d> [B<-l>|B<--localonly>]
|
|
|
|
B<makedhcp> B<-d> I<noderange> [B<-l>|B<--localonly>]
|
|
|
|
B<makedhcp> I<noderange> [B<-s> I<statements>] [B<-l>|B<--localonly>]
|
|
|
|
B<makedhcp> B<-q> I<noderange>
|
|
|
|
B<makedhcp> [I<-h|--help>]
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The B<makedhcp> command creates and updates the DHCP configuration on the management node and service nodes.
|
|
The B<makedhcp> command is supported for both Linux and AIX clusters.
|
|
|
|
=over 3
|
|
|
|
=item 1.
|
|
|
|
Start by filling out the L<networks(5)|networks.5> table properly.
|
|
|
|
=item 2.
|
|
|
|
Then use the B<makedhcp -n> option to create a new dhcp configuration file.
|
|
You can set the site table, dhcplease attribute to the lease time for the dhcp client. The default value is 43200.
|
|
|
|
=item 3.
|
|
|
|
Next, get the node IP addresses and MACs defined in the xCAT database.
|
|
Also, get the hostnames and IP addresses pushed to /etc/hosts (using L<makehosts(8)|makehosts.8>) and to DNS (using L<makedns(8)|makedns.8>).
|
|
|
|
=item 4.
|
|
|
|
Then run B<makedhcp> with a noderange or the B<-a> option. This will inject into dhcpd configuration data pertinent to the specified nodes.
|
|
On linux, the configuration information immediately takes effect without a restart of DHCP.
|
|
|
|
=back
|
|
|
|
If you need to delete node entries from the DHCP configuration, use the B<-d> flag.
|
|
|
|
=head1 OPTIONS
|
|
|
|
=over 12
|
|
|
|
=item B<-n>
|
|
|
|
Create a new dhcp configuration file with a network statement for each network the dhcp daemon should listen on.
|
|
(Which networks dhcpd should listen on can be controlled by the dhcpinterfaces attribute in the L<site(5)|site.5> table.)
|
|
The B<makedhcp> command will automatically restart the dhcp daemon after this operation.
|
|
This option will replace any existing configuration file (making a backup of it first).
|
|
For Linux systems the file will include network entries as well as certain general parameters such as a dynamic range and omapi configuration.
|
|
For AIX systems the file will include network entries.
|
|
On AIX systems, if there are any non-xCAT entries in the existing configuration file they will be preserved and added to the end of the new configuration file.
|
|
|
|
=item B<-a>
|
|
|
|
Define all nodes to the DHCP server. (Will only add nodes that can be reached, network-wise, by this DHCP server.)
|
|
The dhcp daemon does not have to be restarted after this.
|
|
On AIX systems B<makedhcp> will not add entries for cluster nodes that will be installed using NIM. The entries for these nodes will be managed by NIM.
|
|
|
|
=item I<noderange>
|
|
|
|
Add the specified nodes to the DHCP server configuration.
|
|
|
|
=item B<-s> I<statements>
|
|
|
|
For the input noderange, the argument will be interpreted like dhcp configuration file text.
|
|
|
|
=item B<-d> I<noderange>
|
|
|
|
Delete node entries from the DHCP server configuration. On AIX, any entries created by NIM will not be removed.
|
|
|
|
=item B<-a -d>
|
|
|
|
Delete all node entries, that were added by xCAT, from the DHCP server configuration.
|
|
|
|
=item B<-l>|B<--localonly>
|
|
|
|
Configure dhcpd on the local machine only. Without this option, makedhcp will also send this
|
|
operation to any service nodes that service the nodes in the noderange.
|
|
|
|
=item B<-q> I<noderange>
|
|
|
|
Query the node entries from the DHCP server configuration. On AIX, any entries created by NIM will not be listed.
|
|
|
|
=item B<-h|--help>
|
|
|
|
Display usage message.
|
|
|
|
=back
|
|
|
|
=head1 RETURN VALUE
|
|
|
|
0 The command completed successfully.
|
|
|
|
1 An error has occurred.
|
|
|
|
=head1 EXAMPLES
|
|
|
|
=over 3
|
|
|
|
=item 1.
|
|
|
|
Create a new DHCP configuration file and add the network definitions:
|
|
|
|
makedhcp -n
|
|
|
|
=item 2.
|
|
|
|
Define all nodes to the dhcp server:
|
|
|
|
makedhcp -a
|
|
|
|
Note: This does not add nodes that will be installed with AIX/NIM.
|
|
|
|
=item 3.
|
|
|
|
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).
|
|
|
|
makedhcp node5 -s 'option root-path \"172.16.0.1:/install/freebsd6.2/x86_64\";'
|
|
|
|
=item 4.
|
|
|
|
Query a node from the DHCP server.
|
|
|
|
# makedhcp -q node01
|
|
node01: ip-address = 91.214.34.156, hardware-address = 00:00:c9:c6:6c:42
|
|
|
|
=back
|
|
|
|
=head1 FILES
|
|
|
|
DHCP configuration files:
|
|
|
|
[AIX] /etc/dhcpsd.cnf
|
|
|
|
[SLES] /etc/dhcpd.conf
|
|
|
|
[RH] /etc/dhcp/dhcpd.conf
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<noderange(3)|noderange.3>
|
|
|