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Channel bonding enables two or more network interfaces to act as one. The following procedure describes how to channel bond interfaces in Rocks.
We'll use the example of channel bonding two interfaces for compute-0-1. First, let's list the current configuration of the interfaces for compute-0-1:
# rocks list host interface compute-0-1 SUBNET IFACE MAC IP NETMASK MODULE NAME VLAN OPTIONS private eth0 00:1e:4f:b0:74:ef 10.1.255.253 255.255.0.0 tg3 compute-0-1 ---- ------- ------- eth1 00:10:18:31:74:43 ------------ ----------- tg3 ----------- ---- ------- |
Here's what we'll do:
Bond eth0 and eth1.
Name the bonded channel "bond0".
Give bond0 the IP address 10.1.255.253.
Associate bond0 with the private network.
# rocks add host bonded compute-0-1 channel=bond0 interfaces=eth0,eth1 ip=10.1.255.253 network=private |
The above command changes the interface configuraion for compute-0-1 in the following way:
# rocks list host interface compute-0-1 SUBNET IFACE MAC IP NETMASK MODULE NAME VLAN OPTIONS CHANNEL private bond0 ----------------- 10.1.255.253 255.255.0.0 bonding compute-0-1 ---- ------- ------- ------- eth0 00:1e:4f:b0:74:ef ------------ ----------- tg3 ----------- ---- ------- bond0 ------- eth1 00:10:18:31:74:43 ------------ ----------- tg3 ----------- ---- ------- bond0 |
To apply the configuration, execute:
# rocks sync config # rocks sync host network compute-0-1 |
There are several options that can be added to the kernel bonding module (see RedHat's documentation The Channel Bonding Module for a full description of all the options).
To set options "miimon=100" and "mode=balance-rr" for the kernel bonding module associated with bond0, execute:
# rocks set host interface options compute-0-1 bond0 options="miimon=100 mode=balance-rr" |
 | The "options" value (e.g., "miimon=100 mode=balance-rr") must be a space-separated list. |
And now we see:
SUBNET IFACE MAC IP NETMASK MODULE NAME VLAN OPTIONS CHANNEL private bond0 ----------------- 10.1.255.253 255.255.0.0 bonding compute-0-1 ---- miimon=100 mode=balance-rr ------- ------- eth0 00:1e:4f:b0:74:ef ------------ ----------- tg3 ----------- ---- -------------------------- bond0 ------- eth1 00:10:18:31:74:43 ------------ ----------- tg3 ----------- ---- -------------------------- bond0 |
To apply the options to the bond0 interface, execute:
# rocks sync host network compute-0-1 |