Adding a virtual IP address to the cluster using Red Hat cluster manager

Answer

The example of an existing service called "NPS" illustrates the remaining steps for adding a virtual IP address.  The text in bold face indicates user input.

To add a floating IP that fails over with the cluster in a Red Hat 4 server environment, do the following:

1. Log in as root.
2. Run the cluster manager:

cluadmin

3. Before making changes, review the settings for the NPS service so that you can revert to these settings if needed :

cluadmin> service show NPS
  1) state
  2) config
  3) services
service show what? 2
  0) NPS
  c) cancel 
Choose service: 0

name: NPS
preferred node: ha1
relocate: yes
user script: /nzlocal/scripts/cluster.service.NPS
monitor interval: 0
IP address 0: 10.0.0.1
  netmask 0: 255.255.0.0
  broadcast 0: 10.0.255.255
IP address 1: 172.16.103.191
  netmask 1: 255.255.252.0
  broadcast 1: 172.16.103.255
IP address 2: 172.16.103.190
  netmask 2: 255.255.252.0
  broadcast 2: 172.16.103.255
device 0: /dev/cciss/c0d1p7
  mount point, device 0: /nz
  mount fstype, device 0: ext3
  mount options, device 0: rw,suid,dev,exec,nouser,async,noauto
  force unmount, device 0: yes
  samba share, device 0: None
device 1: /dev/cciss/c0d1p2
  mount point, device 1: /nzdata
  mount fstype, device 1: ext3
  mount options, device 1: rw,suid,dev,exec,nouser,async,noauto
more: return, or q

4. Add the virtual IP address by modifying the service which is called NPS:


cluadmin> service modify NPS
Modifying: NPS
Preferred member [ha1]: <enter>

Relocate when the preferred member joins the cluster (yes/no/?) [yes]: <enter>

User script (e.g., /usr/foo/script or None) [/nzlocal/scripts/cluster.service.NPS]: <enter>

Status check interval [0]: <enter>

Do you want to (a)dd, (m)odify, (d)elete or (s)how an IP address, or are you (f)inished adding IP addresses [f]:a

IP address: 10.0.0.3

Netmask (e.g. 255.255.255.0 or None) [None]: 255.255.0.0

Broadcast (e.g. X.Y.Z.255 or None) [None]: 10.0.255.255

Do you want to (a)dd, (m)odify, (d)elete or (s)how an IP address, or are you (f)inished adding IP addresses [f]:f

Do you want to (a)dd, (m)odify, (d)elete or (s)how DEVICES, or are you (f)inished adding DEVICES [f]: <enter>

name: NPS
preferred node: ha1
relocate: yes
user script: /nzlocal/scripts/cluster.service.NPS
monitor interval: 0
IP address 0: 10.0.0.1
  netmask 0: 255.255.0.0
  broadcast 0: 10.0.255.255
IP address 1: 172.16.103.191
  netmask 1: 255.255.252.0
  broadcast 1: 172.16.103.255
IP address 2: 172.16.103.190
  netmask 2: 255.255.252.0
  broadcast 2: 172.16.103.255
IP address 3: 10.0.0.3
  netmask 3: 255.255.0.0
  broadcast 3: 10.0.255.255
device 0: /dev/cciss/c0d1p7
  mount point, device 0: /nz
  mount fstype, device 0: ext3
  mount options, device 0: rw,suid,dev,exec,nouser,async,noauto
  force unmount, device 0: yes
  samba share, device 0: None
device 1: /dev/cciss/c0d1p2
more: return, or q
  mount fstype, device 2: ext3 
  mount options, device 2: rw,suid,dev,exec,nouser,async,noauto
  force unmount, device 2: yes

  samba share, device 2: None

5.  To exit the cluster manager, type q followed by the Enter key.

In the above output, you can see the addition of the floating IP address.

Your virtual IP should now fail over with the cluster when you relocate NPS.