Owner's Manual

Configuring Your Network 13
Configuring the Private Network Using Bonding
Before you deploy the cluster, configure the private cluster network to allow
the nodes to communicate with each other. This involves configuring
network bonding and assigning a private IP address and host name to each
node in the cluster.
To set up network bonding for Broadcom
®
or Intel
®
NICs, and to configure
the private network on each node:
1
Log in as root .
2 Add the following line to the /etc/modprobe.conf file:
alias bond0 bonding
3
For high availability, edit the /etc/modprobe.conf file and set the option
for
link monitoring .
The default value for
miimon is 0 . The default value disables link
monitoring. Change the value to
100 milliseconds initially. Adjust the link
monitoring value as needed to improve performance. For example, type:
options bonding miimon=100 mode=6 max_bonds=2
4
In the /etc/sysconfig/network-scripts/ directory, create or edit
the
ifcfg-bond0 configuration file.
For example, using sample network parameters, the file appears as:
DEVICE=bond0
IPADDR=192.168.0.1
NETMASK=255.255.255.0
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
The entries for NETMASK , NETWORK , and BROADCAST are optional.
DEVICE=bondn is the name required for the bond, where n specifies
the bond number. IPADDR is the private IP address.
To use
bond0 as a virtual device, you must specify the devices that are
bonded as slaves.