=head1 NAME

B<cfghost> - Configure the RHEV hosts for a virtual environment.

=head1 SYNOPSIS

B<cfghost> I<noderange> [B<-a>]

B<cfghost> I<noderange> [B<-n>]

B<cfghost> I<noderange> [B<-p>]

B<cfghost> I<noderange> [B<-e>]

B<cfghost> I<noderange> [B<-d>]

B<cfghost> I<noderange> [B<-r> B<-f>]

=head1 DESCRIPTION

The B<cfghost> command can be used to configure the RHEV-h host.

The rhev-h host will register to the rhev-m automatically, but admin needs to 
approve the host can be added to the 'cluster' with B<-a> flag .

After registering, the network interfaces of host need to be added to the 'network' of 
RHEV. And the power management for the host should be configured so that
rhev-m could make proper decision when certain host encountered error.

For each host, an entry should be added to the hypervisor table:

The columns of hypervisor table:

=over 2

B<hypervisor.node> - rhev-h host name.

B<hypervisor.type> - Must be set to 'rhevh'.

B<hypervisor.mgr> - The rhev manager (The FQDN of rhev-m server) for the host.

B<hypervisor.interface> - The configuration for the nics. Refer to B<-n>.

B<hypervisor.cluster> - The cluster that the host will be added to. The 
default is 'Default' cluster if not specified. 

=back

=head1 OPTIONS

=over 2

=item B<-a>
Approve the host that to be added to cluster.

Before approve, the status of the host must be 'pending_approval'.

=item B<-n>
Configure the network interfaces for the host.

Note: This operation only can be run when host is in 'maintenance mode'. 
Use B<-d> to switch the host to 'maintenance' mode.

The interfaces which configured in hypervisor.interface will be added
to the network of RHEV.

The format of hypervisor.interface is multiple [network:interfacename:
protocol:IP:netmask:gateway] sections separated with '|'. For example: 
[rhevm2:eth0:static:10.1.0.236:255.255.255.0:0.0.0.0].

=over 2

B<network> - The logic network which has been created by 'cfgve -t nw' 
or the default management network 'rhevm'.

B<interfacename> - Physical network name: 'eth0','eth1'...

B<protocol> - To identify which boot protocol to use for the interface: dhcp 
or static.

B<IP> - The IP address for the interface.

B<netmask> - The network mask for the interface.

B<gateway> - The gateay for the interface. This field only can be set when 
the interface is added to 'rhevm' network. 

=back

=item B<-p>
Configure the power management for the host.

The power management must be configured for the rhev-h host to make the 
rhev-m to monitor the power status of the host, so that when certain host 
failed to function, rhev-m will fail over certain role like SPM to other active host.

For rack mounted server, the bmc IP and user:password need to be set for the 
power management (These parameters are gotten from ipmi table). rhev-m uses the 
ipmi protocol to get the power status of the host. 

=item B<-e>
To activate the host.

=item B<-d>
To deactivate the host to maintenance mode.

=item B<-r>
To remove hosts from the rhev-m.

The host should be deactivate to maintenance mode before the removing.

=item B<-f>
It can be used with B<-r> to remove the target object by force.

For removing of host, if B<-f> is specified, the host will be deactivated to maintenance before the removing.

=item B<-h>
Display usage message.

=back

=head1 RETURN VALUE

0  The command completed successfully.

1  An error has occurred.

=head1 EXAMPLES

=over 2

=item 1.
To approve the host 'host1', enter:

 cfghost host1 -a

=item 2.
To configure the network interface for the host 'host1', enter:

 cfghost host1 -n

=item 3.
To configure the power management for the host 'host1', enter:

 cfghost host1 -p

=item 4.
To activate the host 'host1', enter:

 cfghost host1 -e

=item 5.
To deactivate the host 'host1', enter:

 cfghost host1 -d

=item 6.
To remove the host 'host1', enter:

 cfghost host1 -r -f
 
=back

=head1 FILES

/opt/xcat/bin/cfghost