How to Install and Configure OpenStack Nova

In this tutorial, How to Install and Configure the OpenStack compute ( Nova). In previous, My post has How to install OpenStack all in one Centos 7. If you have not yet installed OpenStack nova then step install as below

Step-by-Step Installation and Configuration of OpenStack Nova

Step 1: Create a User and Database for Nova

Use MariaDB to set up the required databases and users:

[root@DevopsRoles ~(keystone)]# mysql -u root -p

Run the following commands to create the necessary databases:

CREATE DATABASE nova;
GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'password';

CREATE DATABASE nova_api;
GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'password';

CREATE DATABASE nova_placement;
GRANT ALL PRIVILEGES ON nova_placement.* TO 'nova'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON nova_placement.* TO 'nova'@'%' IDENTIFIED BY 'password';

CREATE DATABASE nova_cell0;
GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'password';

FLUSH PRIVILEGES;
EXIT;

Step 2: Add Users and Configure Services in Keystone

1. Add the nova user to the service project:
   • openstack user create --domain default --project service --password servicepassword nova
   • openstack role add --project service --user nova admin
2. Add the placement user:
   • openstack user create --domain default --project service --password servicepassword placement
   • openstack role add --project service --user placement admin
3. Create service entries:
   • openstack service create --name nova --description "OpenStack Compute service" compute
   • openstack service create --name placement --description "OpenStack Compute Placement service" placement
4. Define the Keystone controller address:
   • export controller=10.0.2.15
5. Add endpoints:
   • openstack endpoint create --region RegionOne compute public http://$controller:8774/v2.1/%\(tenant_id\)s
   • openstack endpoint create --region RegionOne compute internal http://$controller:8774/v2.1/%\(tenant_id\)s
   • openstack endpoint create --region RegionOne compute admin http://$controller:8774/v2.1/%\(tenant_id\)s
   • openstack endpoint create --region RegionOne placement public http://$controller:8778
   • openstack endpoint create --region RegionOne placement internal http://$controller:8778
   • openstack endpoint create --region RegionOne placement admin http://$controller:8778

Step 3: Install OpenStack Nova

Install the Nova packages:

yum --enablerepo=centos-openstack-stein,epel -y install openstack-nova

Step 4: Configure OpenStack Nova

Edit the Nova configuration file:

mv /etc/nova/nova.conf /etc/nova/nova.conf.org
vi /etc/nova/nova.conf

Add the following configuration:

[DEFAULT]
my_ip = 10.0.2.15
state_path = /var/lib/nova
enabled_apis = osapi_compute,metadata
log_dir = /var/log/nova
transport_url = rabbit://openstack:password@10.0.2.15

[api]
auth_strategy = keystone

[glance]
api_servers = http://10.0.2.15:9292

[oslo_concurrency]
lock_path = $state_path/tmp

[api_database]
connection = mysql+pymysql://nova:password@10.0.2.15/nova_api

[database]
connection = mysql+pymysql://nova:password@10.0.2.15/nova

[keystone_authtoken]
www_authenticate_uri = http://10.0.2.15:5000
auth_url = http://10.0.2.15:5000
memcached_servers = 10.0.2.15:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = servicepassword

[placement]
auth_url = http://10.0.2.15:5000
os_region_name = RegionOne
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = placement
password = servicepassword

[placement_database]
connection = mysql+pymysql://nova:password@10.0.2.15/nova_placement

Apply the correct permissions:

chmod 640 /etc/nova/nova.conf
chgrp nova /etc/nova/nova.conf

Step 5: Set Up SELinux and Firewall Rules

Enable SELinux for OpenStack:

yum --enablerepo=centos-openstack-stein -y install openstack-selinux
semanage port -a -t http_port_t -p tcp 8778

Update the firewall rules:

firewall-cmd --add-port={6080/tcp,6081/tcp,6082/tcp,8774/tcp,8775/tcp,8778/tcp} --permanent
firewall-cmd --reload

Step 6: Initialize the Database

Synchronize the database:

su -s /bin/bash nova -c "nova-manage api_db sync"
su -s /bin/bash nova -c "nova-manage cell_v2 map_cell0"
su -s /bin/bash nova -c "nova-manage db sync"
su -s /bin/bash nova -c "nova-manage cell_v2 create_cell --name cell1"

Step 7: Start Nova Services

Start and enable Nova services:

systemctl start openstack-nova-api openstack-nova-consoleauth openstack-nova-conductor openstack-nova-scheduler openstack-nova-novncproxy
systemctl enable openstack-nova-api openstack-nova-consoleauth openstack-nova-conductor openstack-nova-scheduler openstack-nova-novncproxy

Step 8: Install and Configure Nova Compute

Install Nova Compute:

yum --enablerepo=centos-openstack-stein,epel -y install openstack-nova-compute

Update the Nova configuration to enable VNC:

[vnc]
enabled = True
server_listen = 0.0.0.0
server_proxyclient_address = 10.0.2.15
novncproxy_base_url = http://10.0.2.15:6080/vnc_auto.html

Restart the service:

systemctl start openstack-nova-compute
systemctl enable openstack-nova-compute

Final Steps

Verify the Nova setup:

openstack compute service list

Congratulations! You have successfully installed and configured OpenStack Nova. Thank you for reading the DevopsRoles page!