Installing and Configuring Nova (Compute Node)

Perform the following operations on all compute nodes (x86-compute and arm-compute).

1. Install components.

   1	yum -y install openstack-nova-compute

2. Modify the /etc/nova/nova.conf file.
   1. Open the file.

      vi /etc/nova/nova.conf

   2. Press i to enter the insert mode and perform the following configurations.
      1. Enable the compute and metadata APIs.

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         [DEFAULT] enabled_apis = osapi_compute,metadata transport_url = rabbit://openstack:PASSWORD@controller my_ip = 192.168.100.121 use_neutron = true firewall_driver = nova.virt.firewall.NoopFirewallDriver

         

         Replace my_ip with the OpenStack management IP address of the compute node in Table 3.

         Replace PASSWORD with the OpenStack password 123456 described in Installing RabbitMQ.

      2. Configure Identity service access.

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         [api] auth_strategy = keystone [keystone_authtoken] auth_url = http://controller:5000/v3 memcached_servers = controller:11211 auth_type = password project_domain_name = Default user_domain_name = Default project_name = service username = nova password = PASSWORD

         

         Replace PASSWORD with the password for the nova user to access the database described in Creating the Nova Database.

      3. Add the following content to the [neutron] section in the /etc/nova/nova.conf file:

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         [neutron] url = http://controller:9696 auth_url = http://controller:5000 auth_type = password project_domain_name = default user_domain_name = default region_name = RegionOne project_name = service username = neutron password = PASSWORD

         

         Replace PASSWORD with the password for the neutron user to access the database described in Creating the Neutron Database.

      4. Enable and configure the access to the remote console.

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         [vnc] enabled = true server_listen = 0.0.0.0 server_proxyclient_address = $my_ip novncproxy_base_url = http://controller:6080/vnc_auto.html vncserver_proxyclient_address = $my_ip

         

         Set my_ip to the management IP address of the compute node described in Table 3.

      5. Configure the location of the Image service API.

         1 2	[glance] api_servers = http://controller:9292

      6. Configure the lock path.

         1 2	[oslo_concurrency] lock_path = /var/lib/nova/tmp

      7. Configure the Placement API.

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         [placement] region_name = RegionOne project_domain_name = Default project_name = service auth_type = password user_domain_name = Default auth_url = http://controller:5000/v3 username = placement password = PASSWORD

         

         Replace PASSWORD with the password for the placement user to access the database described in Creating the Placement Database.

      8. Add the following to the [libvirt] section:

         1	virt_type = kvm

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
3. Enable the Compute service and its dependencies and make them to start as the system boots.

   1 2	systemctl enable libvirtd.service openstack-nova-compute.service systemctl start libvirtd.service openstack-nova-compute.service