topic Re: Creating a VIP (virtual IP) in Operating System - HP-UX

Creating a VIP (virtual IP)

Bob Carback — Tue, 08 Aug 2006 11:39:21 GMT

How is a virtual IP created, that is, one IP to failover from one server to another. I created using ifconfig lan0:1...... on one of the servers. Do I do the same (with the same IP) on the other server?

Re: Creating a VIP (virtual IP)

IT_2007 — Tue, 08 Aug 2006 11:43:31 GMT

Edit netconf file reflecting Virtual IP. You can duplicate what it has for lan0. But make sure that you change instance nos like this

INTERFACE_NAME[0]=lan0
IP_ADDRESS[0]=XXXXXXXXXXXX
SUBNET_MASK[0]=255.255.255.0
BROADCAST_ADDRESS[0]=XXXXXXXXXXX
INTERFACE_STATE[0]=up
DHCP_ENABLE[0]=0

INTERFACE_NAME[1]=lan0:1
IP_ADDRESS[1]=XXXXXXXXXXXXX
SUBNET_MASK[1]=255.255.255.0
BROADCAST_ADDRESS[1]=XXXXXXXXXXXX
INTERFACE_STATE[1]=up
DHCP_ENABLE[1]=0

Re: Creating a VIP (virtual IP)

Patrick Wallek — Tue, 08 Aug 2006 11:46:38 GMT

The virtual IPs actually should be created / configured within your SG packages. You don't manually create the virtual IP on the server.

Each package should have its own IP address configured in the package control script. That way the appropriate IP address is configured on whichever machine the package is starting on.

Re: Creating a VIP (virtual IP)

Torsten. — Tue, 08 Aug 2006 13:45:58 GMT

You must use serviceguard to use this functionality of a IP address failover to another host. Without this software, you will simply duplicate the IP address and generate a lot of trouble.

Re: Creating a VIP (virtual IP)

Bob Carback — Tue, 08 Aug 2006 14:22:58 GMT

I've modified the package control script and this worked. Thanks