CentOS 7
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OpenStack Rocky : Configure Nova#3
2018/08/31
 
Install OpenStack Compute Service (Nova).
This example is based on the emvironment like follows.
If you'd like to install Nova Compute on another Computer, refer to here.
        eth0|10.0.0.30 
+-----------+-----------+
|    [ Control Node ]   |
|                       |
|  MariaDB    RabbitMQ  |
|  Memcached  httpd     |
|  Keystone   Glance    |
|   Nova API,Compute    |
+-----------------------+

[1]
Install KVM HyperVisor on Compute Host, refer to here.
It's unnecessarry to set Bridge networking on the section [2] of the link.
[2] Install Nova Compute.
# install from Rocky, EPEL

[root@dlp ~(keystone)]#
yum --enablerepo=centos-openstack-rocky,epel -y install openstack-nova-compute
[3] In addition to basic settings of Nova, add following settings.
[root@dlp ~(keystone)]#
vi /etc/nova/nova.conf
# add follows (enable VNC)

[vnc]
enabled = True
server_listen = 0.0.0.0
server_proxyclient_address = 10.0.0.30
novncproxy_base_url = http://10.0.0.30:6080/vnc_auto.html 
[4] If SELinux is enabled, change policy like follows.
[root@dlp ~(keystone)]#
yum --enablerepo=centos-openstack-queens -y install openstack-selinux

[5] If Firewalld is running, allow service ports.
[root@dlp ~(keystone)]#
firewall-cmd --add-port=5900-5999/tcp --permanent

success
[root@dlp ~(keystone)]#
firewall-cmd --reload

success
[6] Start Nova Compute.
[root@dlp ~(keystone)]#
systemctl start openstack-nova-compute

[root@dlp ~(keystone)]#
systemctl enable openstack-nova-compute
# discover Compute Node

[root@dlp ~(keystone)]#
su -s /bin/bash nova -c "nova-manage cell_v2 discover_hosts"
# show status

[root@dlp ~(keystone)]#
openstack compute service list

+----+------------------+---------------+----------+---------+-------+----------------------------+
| ID | Binary           | Host          | Zone     | Status  | State | Updated At                 |
+----+------------------+---------------+----------+---------+-------+----------------------------+
|  3 | nova-consoleauth | dlp.srv.world | internal | enabled | up    | 2018-08-31T02:42:19.000000 |
|  4 | nova-conductor   | dlp.srv.world | internal | enabled | up    | 2018-08-31T02:42:19.000000 |
|  5 | nova-scheduler   | dlp.srv.world | internal | enabled | up    | 2018-08-31T02:42:19.000000 |
|  6 | nova-compute     | dlp.srv.world | nova     | enabled | up    | 2018-08-31T02:42:16.000000 |
+----+------------------+---------------+----------+---------+-------+----------------------------+
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