OpenStack Vskills 5

Question 1

Which OpenStack service is used to manage TLS certificates and secrets?

Accepted Answer

Barbican

Answer

Barbican is the OpenStack Key Manager service, providing secure storage and management of secrets, certificates, and encryption keys.

Question 2

In Neutron's ML2 plugin architecture, what is the role of a 'mechanism driver'?

Accepted Answer

Binding logical network resources to physical network infrastructure

Answer

Mechanism drivers in ML2 translate Neutron's logical network model into actual network configurations on physical or virtual infrastructure.

Question 3

What is the function of OpenStack Octavia?

Accepted Answer

Load Balancing as a Service (LBaaS)

Answer

Octavia is OpenStack's Load Balancing as a Service (LBaaS) implementation, managing load balancers via dedicated Amphora instances.

Question 4

Which OpenStack project provides a container orchestration engine service?

Accepted Answer

Magnum

Answer

Magnum is the OpenStack Container Infrastructure Management Service that provisions Kubernetes, Docker Swarm, and other COE clusters.

Question 5

What happens when the Nova scheduler cannot find a valid host for an instance?

Accepted Answer

The instance is placed in ERROR state

Answer

When no suitable compute host is found after applying all filters, Nova transitions the instance to an ERROR state with a 'No valid host' message.

OpenStack Practice Test