This question pertains to OpenStack, a common virtualization platform in Huawei’s HCIP-Data Center Network curriculum, where components collaborate to create and manage virtual machines (VMs). Let’s analyze each component’s role in providing computing, storage, and network resources during VM creation:
A. Nova:Nova is the compute service in OpenStack, responsible for managing VM lifecycles, including provisioning CPU and memory resources. It’s essential for providing computing resources during VM creation.Required.
B. Neutron:Neutron is the networking service, handling virtual network creation, IP allocation, and connectivity (e.g., VXLAN or VLAN) for VMs. It’s critical for providing network resources during VM creation.Required.
C. Ceilometer:Ceilometer is the telemetry service, used for monitoring, metering, and collecting usage data (e.g., CPU utilization, disk I/O) of VMs. While useful for billing or optimization, it does not directly provide computing, storage, or network resources during VM creation.Not Required.
D. Cinder:Cinder is the block storage service, providing persistent storage volumes for VMs (e.g., for OS disks or data). It’s essential for providing storage resources during VM creation if a volume is attached.Required.
Thus,C (Ceilometer)is not required to provision the core resources (computing, storage, network) for VM creation, as its role is monitoring, not resource allocation.References:Huawei HCIP-Data Center Network Training – OpenStack Architecture; OpenStack Official Documentation – Service Overview.
