Configuring DNS

Perform the following operations on all OpenStack nodes (controller, x86-compute, and arm-compute) to modify the hosts files of all nodes.

1. Open the /etc/hosts file.

   1	vi /etc/hosts

2. Press i to enter the insert mode and add the following content in the blank area:

   1 2 3

   NIC IP address of the management node controller NIC IP address of the x86 compute node x86-compute NIC IP address of the Arm compute node arm-compute

   The following figure shows the modified hosts file.

   

3. Press Esc, type :wq!, and press Enter to save the file and exit.