9.2.3 Changing the IP Address of CF over IP

This section describes how to change the IP address of CF over IP.

Operation Procedure

Edit the /etc/default/cluster file on all the nodes in the cluster to change the IP address and the broadcast address.
Edit the file appropriately depending on if the cluster nodes are located in the same network segment or they are located in different network segments.

If the cluster nodes are located in the same network segment:

nodename <CF node name>
clustername <cluster name>
device <IP device 1> <IP address 1> <broadcast address 1>
device <IP device 2> <IP address 2> <broadcast address 2>

If the cluster nodes are located in different network segments:

nodename <CF node name>
clustername <cluster name>
device <IP device 1> <IP address 1> <broadcast address 1> <IP address of the remote node 1>
device <IP device 2> <IP address 2> <broadcast address 2> <IP address of the remote node 2>

Restart the system on all the nodes in the cluster.
Check the CF settings.
Check the following settings:
- Make sure that all the nodes have joined the cluster.
  Execute the following command on any one node in the cluster system and make sure that all the CF node names are displayed in "Node" field. Also make sure that UP is displayed in "State" field.
```
# cftool -n
```
  Example
```
# cftool -n
Node   Number   State   Os     Cpu
node1      1    UP      Linux  EM64T
node2      2    UP      Linux  EM64T
```
  Make sure that all the CF node names are displayed in "Node" field, and UP is displayed in "State" field.
- Make sure that the settings of CF over IP are enabled.
  Execute the following command on all the nodes in the cluster system and make sure that the settings of CF over IP are enabled.
```
# cftool -d
```
  Example: The number of cluster interconnects are 2.
```
# cftool -d
Number  Device    Type   Speed   Mtu   State   Configured   Address
 4      /dev/ip0   6      n/a    1392  UP      YES          0a.00.00.c9.00.00
 5      /dev/ip1   6      n/a    1392  UP      YES          0a.00.00.ca.00.00
```
  Make sure that only /dev/ipX is displayed in "Device" field (X indicates the number of cluster interconnects ranged from 0 to 3).