Verifying OpenStack Installation on Multiple Nodes

This shows how to create and access VM instances on multiple nodes and perform traffic test after the OpenStack deployment is complete.

1. On the controller node, source the keystonerc_admin file to be able to access the openstack command.

   source /root/keystonerc_admin

2. Create an OpenStack image.
   For example:

   openstack image create --disk-format qcow2 --container-format bare --public \
   --file ./Fedora-Cloud-Base-33-1.2.x86_64.qcow2 fedora_cloud_qcow

   List images to ensure the image was created successfully.

   openstack image list

   An output example:

   +--------------------------------------+-------------------+--------+
   | ID                                   | Name              | Status |
   +--------------------------------------+-------------------+--------+
   | ad51c574-a14b-4127-ad47-5bcc429fab40 | fedora_cloud_qcow | active |
   +--------------------------------------+-------------------+--------+

3. Create a flavor with huge pages.

   openstack flavor set m1.medium --property hw:mem_page_size=large

4. Create a network.

   openstack network create net1 --disable-port-security
   
   # Create a subnet
   openstack subnet create subnet1 --network net1 \
   --subnet-range 192.1.10.0/24
   
   # Create a router
   openstack router create router1
   
   # Add the subnet to the router
   openstack router add subnet router1 subnet1

5. Create a port and a VM on each compute node.

   openstack port create --network net1 --fixed-ip \
   subnet=subnet1,ip-address=<VM IP> --vnic-type virtio-forwarder <port_name>
   
   openstack server create --flavor m1.medium --image fedora_cloud_qcow \
   --availability-zone ::<compute-host-name> --port <port_name> <vm_name>

   For example:

   openstack port create --network net1 --fixed-ip \
   subnet=subnet1,ip-address=192.1.10.10 --vnic-type virtio-forwarder port10
   
   openstack server create --flavor m1.medium --image fedora_cloud_qcow \
   --availability-zone ::cmp23 --port port10 vm1
   
   openstack server show vm1 -f json
   
   openstack port create --network net1 --fixed-ip \
   subnet=subnet1,ip-address=192.1.10.20 --vnic-type virtio-forwarder port20
   
   openstack server create --flavor m1.medium --image fedora_cloud_qcow \
   --availability-zone ::cmp72 --port port20 vm1

   Check whether the server is created successfully.

   openstack server list

6. Log in to compute node 0.

   # Run command to list running VMs
   virsh list --all
   
   # Access the VM.
   virsh console <VM instance name>
   
   # From the VM command line, ping the VM on compute node 1
   ping 192.1.10.11

   Note: If the network interface does not have an IP address, configure manually.

   # Stop NetworkManager before setting an IP manually.
   systemctl stop NetworkManager
   ip a add <ip>/<netmask> dev eth0

   For example:

   ip a add 192.1.10.10/24 dev eth0

7. Log in to compute node 1.

   # Run command to list running VMs.
   virsh list --all
   
   # Access the VM.
   virsh console <VM instance name>
   
   # Ping from one VM to another VM
   ping 192.1.10.10

8. Test with traffic between multiple VM guests using iperf3.

   # On one VM
   iperf3 -s
   
   # On another VM
   iperf3 -c <iperf3_server_VM_IP>