Howto configure Virtual Hostname

[Rahul Sharma_4]

HI folks - Im not aware how to set up a virtual hostname for a hpux 11.23 system. I need a virtual hostname for my machine inorder to install Oracle Cluster Ready Service for PA. Any assistance appreciated!

[Jannik · Accepted solution]

are you looking for the way to configure a virtual IP on a host it is done by ifconfig:
/usr/sbin/ifconfig lan0:1 172.0.0.2 netmask 255.255.255.0

or in the file /etc/rc.config.d/netconf that will work over reboots:
INTERFACE_NAME[1]=lan1:1
IP_ADDRESS[1]=172.0.0.2
SUBNET_MASK[1]=255.255.255.0
BROADCAST_ADDRESS[1]=""
INTERFACE_STATE[1]=""
DHCP_ENABLE[1]=0

or as a script (this is on solaris):
LOGICAL_IP=172.0.0.2
MASK=255.255.255.0
BOROADCAST=172.0.0.255

case "$1" in
start)
ifconfig bge0 addif $LOGICAL_IP netmask $MASK broadcast $BOROADCAST up
;;
stop)
ifconfig bge0 removeif $LOGICAL_IP
;;
*)
echo "Unknown positional parameter ! - no action taken."
;;
Esac

Remember that the interfase lan1 and lan1:1 is the same and then is on the same subnet it is just to virtualise a IP (hostname)

[Rajesh SB]

Hi,

I understand Virtual hostname in two way.

1. Virtual IP address with Virtual hostname:
You can define the virtual IP address

in the file /etc/rc.config.d/netconf that will work over reboots:
INTERFACE_NAME[1]=lan1:1
IP_ADDRESS[1]=10.0.0.1
SUBNET_MASK[1]=255.255.255.0
BROADCAST_ADDRESS[1]=""
INTERFACE_STATE[1]=""
DHCP_ENABLE[1]=0

This means single Lan interface host, identified by multiple IP Addresses.

2. Alias/another hostname for same IP node. This can be achived by putting the CNAME entry for existing IP and hostname in the DNS Server.
This is like one IP address and multiple name.

Regards,
Rajesh

[Matthew Ghofrani]

If you have ServiecGuard installed, use this command;
cmmodnet -a -i ip_address subnet_address

Boston, MA

[Rahul Sharma_4]

solved! thanx a ton!
PS: Im not using MCSG but Veritas Cluster Server