41. What command manages floating IP addresses in OpenStack
nova floating-ip-*
42. Define bare-metal node.
Bare-metal node grants access to control bare-metal driver that handles the provisioning of OpenStack Compute physical hardware utilizing the standard cloud APIs and tools like Heat. It is generally used for single tenant clouds like high-performance cluster computing. For using the bare-metal driver, a network interface must be created with the bare-metal node inserted into it. Afterwards, users can launch an instance from the node. Users can also list and delete bare-metal nodes by removing the associated network instances
43. List down the components of OpenStack Compute
Nova (Compute) Cloud comprises following components:
- API server
- Message Queue (Rabbit-MQ Server)
- Compute Workers (Nova-Compute)
- Network controller (Nova-Network)
- Volume Worker
- Scheduler
44. Define the role of API Server.
It provides an interface for the external world to interact with the cloud infrastructure.
45. List the commands to generate Key pairs.
- ssh-keygen
- cd .ssh
- nova keypair-add –pub_key id_rsa.pub mykey
OPENSTACK CERTIFICATION TRAINING
Weekend / Weekday Batch
46. Define Flavor
Flavors are virtual hardware templates present in OpenStack, which define the memory sizes of RAM, hard disk, etc. Flavors illustrate a number of parameters like ID, Name, Memory_MB, Disk and others, giving a choice of Virtual Machine to the user just like having a physical server. OpenStack dashboard also allows users to modify a flavor by deleting the existing one and creating a new with the similar name and parameters.
47. How to create a user in OpenStack?
sudo nova-manage user create user-name
48. How to assign a project/tenant to a user?
By using the command sudo nova-manage user create user-name
49. Can we see the list of roles and associated IDs in OpenStack environment?
Yes, by using keystone role-list
50. What is the command used for pause and unpause an instance?
To pause an instance, command used is $ nova pause INSTANCE_NAME To unpause an instance, command used is $ nova unpause INSTANCE_NAME
