Configure Aliases¶

The following example sets the xCAT properties for compute node cn1 to create:

Compute node cn1 with one physical NIC: eth2

User wants to configure aliases aliases1-1 and aliases1-2

Assign ip 11.1.0.100 to aliases1-1 and 12.1.0.100 to aliases1-2

Add network object into the networks table¶

Add/modify the networks in the networks table

chdef -t network -o 11_1_0_0-255_255_0_0 net=11.1.0.0 mask=255.255.0.0
chdef -t network -o 12_1_0_0-255_255_0_0 net=12.1.0.0 mask=255.255.0.0

Define attributes in the `nics` table¶

Compute node cn1 has one physical NICs: eth2
```
chdef cn1 nictypes.eth2=ethernet
```

Define nicips, nicaliases, nichostnamesuffixes

chdef cn1 nicips.eth2="11.1.0.100|12.1.0.100" nicaliases.eth2="aliases1-1|aliases1-2" nichostnamesuffixes.eth2="-eth2|-eth2-1"

Define nicnetworks

chdef cn1 nicnetworks.eth2="11_1_0_0-255_255_0_0|12_1_0_0-255_255_0_0"

Update /etc/hosts¶

Update the /etc/hosts file
```
makehosts cn1
```

Check the /etc/hosts file

11.1.0.100 cn1-eth2 cn1-eth2.cluster.com aliases1-1
12.1.0.100 cn1-eth2-1 cn1-eth2-1.cluster.com aliases1-2

Enable `confignetwork` to configure aliases¶

Add confignetwork into the node’s postscripts list, confignetwork will be executed during OS deployment on compute node
```
chdef cn1 -p postscripts=confignetwork
```
Or if the compute node is already running, use updatenode command to run confignetwork postscript
```
updatenode cn1 -P confignetwork
```

Check the result¶

Check if eth2 is configured correctly

xdsh cn1 "ip addr show eth2"