OpenStack provides tools to check various parts of Compute Services, and we'll use common system commands to check whether our environment is running as expected.
To check our OpenStack Compute host we must log in to that server, so do this now before following the given steps.
To check that Nova is running the required services, we invoke the
nova-manage tool and ask it various questions of the environment as follows:
sudo nova-manage service list
You will see the following output. The :-) icons are indicative that everything is fine.
If you see XXX where the :-) icon should be, then you have a problem.