OpenStack Vskills 4

Question 1

In OpenStack, what does 'live migration' require that 'cold migration' does not?

Accepted Answer

Shared storage or block migration support between compute hosts

Answer

Live migration moves a running instance and requires either shared storage or block migration to transfer the disk state without downtime.

Question 2

Which configuration file controls Nova's scheduler behavior, including filters and weights?

Accepted Answer

/etc/nova/nova.conf

Answer

nova.conf contains all Nova service configuration including scheduler_driver, enabled_filters, and weight settings under [filter_scheduler].

Question 3

What is the purpose of OpenStack Ironic?

Accepted Answer

Deploying bare-metal servers as if they were virtual machines

Answer

Ironic is the OpenStack bare-metal provisioning service that treats physical servers similarly to how Nova treats virtual machines.

Question 4

Which OpenStack CLI command creates a new Neutron network?

Accepted Answer

openstack network create

Answer

The 'openstack network create' command creates a new virtual network in Neutron using the unified OpenStack client.

Question 5

What is Zaqar in the OpenStack ecosystem?

Accepted Answer

A multi-tenant message queuing service

Answer

Zaqar is the OpenStack Message Queuing service, providing multi-tenant, cloud-native messaging for applications.

OpenStack Practice Test