Openstack Questions | PrepOps.Dev

#1

What components/projects of OpenStack are you familiar with?

#2

Can you tell me what each of the following services/projects is responsible for?:

Nova
- Neutron
- Cinder
- Glance
- Keystone

#3

Identify the service/project used for each of the following:

Copy or snapshot instances
- GUI for viewing and modifying resources
- Block Storage
- Manage virtual instances

#4

What is a tenant/project?

#5

Determine true or false:

OpenStack is free to use
- The service responsible for networking is Glance
- The purpose of tenant/project is to share resources between different projects and users of OpenStack

#6

Describe in detail how you bring up an instance with a floating IP

#7

You get a call from a customer saying: "I can ping my instance but can't connect (ssh) it". What might be the problem?

#8

What types of networks OpenStack supports?

#9

How do you debug OpenStack storage issues? (tools, logs, ...)

#10

How do you debug OpenStack compute issues? (tools, logs, ...)

#11

Have you deployed OpenStack in the past? If yes, can you describe how you did it?

#12

Are you familiar with TripleO? How is it different from Devstack or Packstack?

#13

Can you describe Nova in detail?

#14

What do you know about Nova architecture and components?

#15

Explain Neutron in detail

#16

Explain each of the following components:

neutron-dhcp-agent
- neutron-l3-agent
- neutron-metering-agent
- neutron-*-agtent
- neutron-server

#17

Explain these network types:

Management Network
- Guest Network
- API Network
- External Network

#18

In which order should you remove the following entities:

Network
- Port
- Router
- Subnet

#19

What is a provider network?

#20

What components and services exist for L2 and L3?

#21

What is the ML2 plug-in? Explain its architecture

#22

What is the L2 agent? How does it works and what is it responsible for?

#23

What is the L3 agent? How does it works and what is it responsible for?

#24

Explain what the Metadata agent is responsible for

#25

What networking entities Neutron supports?

#26

How do you debug OpenStack networking issues? (tools, logs, ...)

#27

Explain Glance in detail

#28

Describe Glance architecture

#29

Explain Swift in detail

#30

Can users store by default an object of 100GB in size?

#31

Explain the following in regards to Swift:

Container
- Account
- Object

#32

True or False? there can be two objects with the same name in the same container but not in two different containers

#33

Explain Cinder in detail

#34

Describe Cinder's components

#35

Can you describe the following concepts in regards to Keystone?

Role
- Tenant/Project
- Service
- Endpoint
- Token

#36

What are the properties of a service? In other words, how a service is identified?

#37

Explain the following:

PublicURL
- InternalURL
- AdminURL

#38

What is a service catalog?

#39

Describe each of the following services

Swift
- Sahara
- Ironic
- Trove
- Aodh
- Ceilometer

#40

Identify the service/project used for each of the following:

Database as a service which runs on OpenStack
- Bare Metal Provisioning
- Track and monitor usage
- Alarms Service
- Manage Hadoop Clusters
- highly available, distributed, eventually consistent object/blob store

#41

Can you describe Keystone service in detail?

#42

Describe Keystone architecture

#43

Describe the Keystone authentication process

#44

What each of the following does?:

nova-api
- nova-compuate
- nova-conductor
- nova-cert
- nova-consoleauth
- nova-scheduler

#45

What types of Nova proxies are you familiar with?

#46

Explain BGP dynamic routing

#47

What is the role of network namespaces in OpenStack?

#48

Can you describe Horizon in detail?

#49

What can you tell about Horizon architecture?