Shulou(Shulou.com)06/02 Report--

Part 6 Installing Compute Service nova (Control Node)

Compute service nova is slightly more complex than previous services (but not as complex as network service neutron), requiring installation on both control and compute nodes

The control node mainly installs nova-api (nova host service), nova-scheduler (nova scheduling service), nova-conductor (nova database service, providing database access), nova-novnc proxy (nova vnc service, providing instance console) and other services;

Compute nodes are mainly installed with nova-compute (nova computing service).

This section describes the steps for installing nova on control nodes, and the next section describes the installation on compute nodes.

Install nava compute service on control node as follows (control node)

Installation of databases (3 total databases)

mysql -u root -p

Create nova_api, nova and nova_cell0 databases

MariaDB [(none)]> CREATE DATABASE nova_api;

MariaDB [(none)]> CREATE DATABASE nova;

MariaDB [(none)]> CREATE DATABASE nova_cell0;

Grant appropriate access to the database (6 statements)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';

MariaDB [(none)]> exit;

Create Nova User

. admin-openrc

openstack user create --domain default --password NOVA_PASS nova

Add admin role to nova user

openstack role add --project service --user nova admin

Create nova service entity

openstack service create --name nova --description "OpenStack Compute" compute

Create Compute API service endpoints

openstack endpoint create --region RegionOne compute public http://ct:8774/v2.1

openstack endpoint create --region RegionOne compute internal http://ct:8774/v2.1

openstack endpoint create --region RegionOne compute admin http://ct:8774/v2.1

installation package

yum install openstack-nova-api openstack-nova-conductor openstack-nova-novncproxy openstack-nova-scheduler -y

modify the configuration file

cp /etc/nova/nova.conf /etc/nova/nova.conf.bak

grep -Ev '^$|#' /etc/nova/nova.conf.bak >/etc/nova/nova.conf

vim /etc/nova/nova.conf

Add in [DEFAULT]:

[DEFAULT]

enabled_apis = osapi_compute,metadata

transport_url = rabbit://openstack:RABBIT_PASS@ct:5672/

my_ip = 192.168.10.41

use_neutron = true

firewall_driver = nova.virt.firewall.NoopFirewallDriver

Add to [api_database] and [database]:

[api_database]

connection = mysql+pymysql://nova:NOVA_DBPASS@ct/nova_api

[database]

connection = mysql+pymysql://nova:NOVA_DBPASS@ct/nova

In [api] and [keystone_authtoken] add:

[api]

auth_strategy = keystone

[keystone_authtoken]

www_authenticate_uri = http://ct:5000/

auth_url = http://ct:5000/

memcached_servers = ct:11211

auth_type = password

project_domain_name = Default

user_domain_name = Default

project_name = service

username = nova

password = NOVA_PASS

Add at [vnc]:

[vnc]

enabled = true

server_listen = $my_ip

server_proxyclient_address = $my_ip

At [glance] add:

[glance]

api_servers = http://ct:9292

In [oslo_currency] add:

[oslo_concurrency]

lock_path = /var/lib/nova/tmp

In [placement] insert:

[placement]

region_name = RegionOne

project_domain_name = Default

project_name = service

auth_type = password

user_domain_name = Default

auth_url = http://ct:5000/v3

username = placement

password = PLACEMENT_PASS

PS: There are many changes, please carefully modify them.

populating nova-api database

su -s /bin/sh -c "nova-manage api_db sync" nova

su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova

su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova

su -s /bin/sh -c "nova-manage db sync" nova

After the database is populated, verify that nova cell0 and cell1 are registered correctly:

su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova

Start compute service nova and configure it to start at system startup

systemctl enable openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service

systemctl start openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service

Similarly, use netstat -tnlup to check the port status, such as 8774 and 8775 ports, indicating that the nova service is starting normally.

curl http://ct:8774

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