CentOS7安装OpenStack-04.安装Nova计算服务

nova相关端口：

api:8774
metadata:8775
novncproxy:6080

4.1.在控制节点安装nova计算服务 

1）创建nova相关数据库

# 登录数据库
mysql -u root -p

# 创建用户并授权
CREATE DATABASE nova_api;
CREATE DATABASE nova;
CREATE DATABASE nova_cell0;
CREATE DATABASE placement;

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

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

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

GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'localhost' IDENTIFIED BY 'placement';
GRANT ALL PRIVILEGES ON placement.* TO 'placement'@'%' IDENTIFIED BY 'placement';

# 刷新权限
flush privileges;

4.2.在keystone上面注册nova服务

1）在keystone上创建nova用户

openstack user create --domain default --password=nova nova
openstack user list

2）在keystone上将nova用户配置为admin角色并添加进service项目

# 以下命令无输出

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

3）创建nova计算服务的实体

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

4）创建计算服务的API端点（endpoint）

# 计算服务compute

openstack endpoint create --region RegionOne compute public http://controller:8774/v2.1
openstack endpoint create --region RegionOne compute internal http://controller:8774/v2.1
openstack endpoint create --region RegionOne compute admin http://controller:8774/v2.1
openstack endpoint list

5）这个版本的nova增加了placement项目

# 同样，创建并注册该项目的服务证书

openstack user create --domain default --password=placement placement
openstack role add --project service --user placement admin
openstack service create --name placement --description "Placement API" placement

# 创建placement项目的endpoint（API端口）

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
openstack endpoint list

4.3.在控制节点安装nova相关服务 

1）安装nova相关软件包

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

2）快速修改nova配置

openstack-config --set  /etc/nova/nova.conf DEFAULT enabled_apis  osapi_compute,metadata
openstack-config --set  /etc/nova/nova.conf DEFAULT my_ip 192.168.182.143
openstack-config --set  /etc/nova/nova.conf DEFAULT use_neutron  true 
openstack-config --set  /etc/nova/nova.conf DEFAULT firewall_driver  nova.virt.firewall.NoopFirewallDriver
openstack-config --set  /etc/nova/nova.conf DEFAULT transport_url  rabbit://openstack:openstack@controller
openstack-config --set  /etc/nova/nova.conf api_database connection  mysql+pymysql://nova:nova@controller/nova_api
openstack-config --set  /etc/nova/nova.conf database connection  mysql+pymysql://nova:nova@controller/nova
openstack-config --set  /etc/nova/nova.conf placement_database connection  mysql+pymysql://placement:placement@controller/placement
openstack-config --set  /etc/nova/nova.conf api auth_strategy  keystone 
openstack-config --set  /etc/nova/nova.conf keystone_authtoken auth_url  http://controller:5000/v3
openstack-config --set  /etc/nova/nova.conf keystone_authtoken memcached_servers  controller:11211
openstack-config --set  /etc/nova/nova.conf keystone_authtoken auth_type  password
openstack-config --set  /etc/nova/nova.conf keystone_authtoken project_domain_name  default 
openstack-config --set  /etc/nova/nova.conf keystone_authtoken user_domain_name  default
openstack-config --set  /etc/nova/nova.conf keystone_authtoken project_name  service 
openstack-config --set  /etc/nova/nova.conf keystone_authtoken username  nova 
openstack-config --set  /etc/nova/nova.conf keystone_authtoken password  nova

openstack-config --set  /etc/nova/nova.conf vnc vncserver_listen 192.168.182.143
openstack-config --set  /etc/nova/nova.conf vnc vncserver_proxyclient_address 192.168.182.143
openstack-config --set  /etc/nova/nova.conf vnc vnc_enabled True
openstack-config --set  /etc/nova/nova.conf vnc novncproxy_host 0.0.0.0
openstack-config --set  /etc/nova/nova.conf vnc novncproxy_port 6080
openstack-config --set  /etc/nova/nova.conf vnc novncproxy_base_url http://192.168.182.143:6080/vnc_auto.html

openstack-config --set  /etc/nova/nova.conf glance api_servers  http://controller:9292
openstack-config --set  /etc/nova/nova.conf oslo_concurrency lock_path  /var/lib/nova/tmp 
openstack-config --set  /etc/nova/nova.conf placement region_name RegionOne
openstack-config --set  /etc/nova/nova.conf placement project_domain_name Default
openstack-config --set  /etc/nova/nova.conf placement project_name service
openstack-config --set  /etc/nova/nova.conf placement auth_type password
openstack-config --set  /etc/nova/nova.conf placement user_domain_name Default
openstack-config --set  /etc/nova/nova.conf placement auth_url http://controller:5000/v3
openstack-config --set  /etc/nova/nova.conf placement username placement
openstack-config --set  /etc/nova/nova.conf placement password placement
openstack-config --set  /etc/nova/nova.conf scheduler discover_hosts_in_cells_interval 300

# 默认情况下，计算服务使用内置的防火墙服务。由于网络服务包含了防火墙服务，必须使用``nova.virt.firewall.NoopFirewallDriver``防火墙服务来禁用掉计算服务内置的防火墙服务

# 检查生效的nova配置

egrep -v "^#|^$" /etc/nova/nova.conf

3）修改nova的虚拟主机配置文件（vim /etc/httpd/conf.d/00-nova-placement-api.conf）

Listen 8778

<VirtualHost *:8778>
  WSGIProcessGroup nova-placement-api
  WSGIApplicationGroup %{GLOBAL}
  WSGIPassAuthorization On
  WSGIDaemonProcess nova-placement-api processes=3 threads=1 user=nova group=nova
  WSGIScriptAlias / /usr/bin/nova-placement-api
  <IfVersion >= 2.4>
    ErrorLogFormat "%M"
  </IfVersion>
  ErrorLog /var/log/nova/nova-placement-api.log
  #SSLEngine On
  #SSLCertificateFile ...
  #SSLCertificateKeyFile ...
</VirtualHost>

Alias /nova-placement-api /usr/bin/nova-placement-api
<Location /nova-placement-api>
  SetHandler wsgi-script
  Options +ExecCGI
  WSGIProcessGroup nova-placement-api
  WSGIApplicationGroup %{GLOBAL}
  WSGIPassAuthorization On
</Location>

<Directory /usr/bin>
   <IfVersion >= 2.4>
      Require all granted
   </IfVersion>
   <IfVersion < 2.4>
      Order allow,deny
      Allow from all
   </IfVersion>
</Directory>

# 修改完毕重启httpd服务

systemctl restart httpd
systemctl status httpd 

# 至此，nova计算服务的软件包安装完成

4.4.同步nova数据（注意同步顺序）

1）初始化nova-api和placement数据库

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

# 验证数据库

mysql -h192.168.182.143 -unova -pnova -e "use nova_api;show tables;"
mysql -h192.168.182.143 -uplacement -pplacement -e "use placement;show tables;"

2）初始化nova_cell0和nova数据库

# 注册cell0数据库

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

# 创建cell1单元

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

# 初始化nova数据库

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

# 检查确认cell0和cell1注册成功

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

# 验证数据库

mysql -h192.168.182.143 -unova -pnova -e "use nova_cell0;show tables;"
mysql -h192.168.182.143 -unova -pnova -e "use nova;show tables;"

5）检查确认cell0和cell1注册成功

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

# 返回的数据存储在nova_api数据库的cell_mappings表中

4.5.启动nova服务

1）启动nova服务并设置为开机自启动

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

systemctl status openstack-nova-api.service openstack-nova-consoleauth.service 
  openstack-nova-scheduler.service openstack-nova-conductor.service 
  openstack-nova-novncproxy.service

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

systemctl list-unit-files |grep openstack-nova* |grep enabled

~~~至此，在控制节点安装nova计算服务就完成了~~~