OpenStack 面试题与答案
问题 16. Explain the role of Zaqar in OpenStack.
Zaqar is the messaging and notification service in OpenStack, providing a scalable and multi-tenant messaging API. It allows communication between different components and services.
问题 17. What is the purpose of the 'swift-ring-builder' tool in Swift?
The 'swift-ring-builder' tool is used to manage the partitioning and distribution of data across the Swift object storage cluster. It helps in maintaining and updating the ring structure.
问题 18. Explain the concept of 'Roles' in Keystone.
In Keystone, roles are a way to define a set of permissions or access rights. Users are assigned roles, and roles are associated with specific operations or resources in OpenStack.
问题 19. What is the purpose of the 'OS-EXT-SRV-ATTR' extension in Nova?
The 'OS-EXT-SRV-ATTR' extension in Nova provides additional attributes and information about a server instance, including details about the host, instance name, and hypervisor.
问题 20. Explain the concept of 'Keypair' in Nova.
A Keypair in Nova is a security feature used for secure communication with instances. It consists of a public key that is injected into the instance during its creation.
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