When an instance is launched, in most cases, the scheduler determines which host will run it. There are times, however, when it is good to be able to directly assign an instance to a host, for example, when helping to troubleshoot or perhaps when the orchestration is managing resource allocation.
Ensure you are logged in to an Ubuntu host that has access to our OpenStack environment on the 192.168.100.0/24 public network. This host will be used to run client tools against the OpenStack environment created. If you are using the accompanying Vagrant environment, as described in the Preface, you can use the controller node. This node has the python-novaclient package that provides the nova command-line client.
If you created this node with Vagrant, you can execute the following command:
vagrant ssh controller
Ensure that you have set the following credentials (adjust the path to your certificates and key file to match your environment...