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OpenStack: Difference between "nova hypervisor-list" and "nova service-list" commands ?

+3 votes
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OpenStack: Difference between "nova hypervisor-list" and "nova service-list" commands ?
posted Oct 29, 2017 by Vimal Kumar Mishra

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1 Answer

+1 vote

Hi Vimal,
Though I am new to OpenStack but I would like to share my understanding.
Command "nova hypervisor-list" gives the list of compute nodes on which compute instances (VMs) can be instantiated.
While the command "nova service-list" gives the list of nova services which are running in controller node. This also includes nova-compute services running in each host.
I am not fully confident on my question, please correct me if something is wrong.

answer Oct 30, 2017 by Harshita
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What kind of different output came out from these two commands and what is the significance of each field of the output ?

+2 votes

What is the difference between:

  1. using "the Command-line interface to the OpenStack APIs" through the command "openstack"
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+2 votes

I configured nova.conf file with:
cpu_allocation_ratio=16.0
ram_allocation_ratio=1.5
specifying CoreFilter in scheduler_default_filters.
After this configuration i can't see the overcommitment results in the CLI or in Horizon.
Why? Any tips?

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