Preparing networking for fully disconnected hosts
To run MicroShift on a fully disconnected host with no external network connectivity, you prepare a persistent hostname, loopback IP addressing, DNS, and /etc/hosts entries before you apply MicroShift network configuration.
Typically this means that the device does not have an attached network interface controller (NIC) to provide a subnet. These steps can also be completed on a host with a NIC that is removed after setup. You can also automate these steps on a host that does not have a NIC by using the %post phase of a Kickstart file.
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Configuring networking settings for disconnected environments is necessary because MicroShift requires a network device to support node communication. To meet this requirement, you must configure MicroShift networking settings to use the "fake" IP address you assign to the system loopback device during setup. |