基于OpenStack构建企业私有云（4）Nova

在中小型部署中，我们常常把除nova-compute之外的其它组件部署到一台服务器上，称之为控制节点。将nova-compute部署到单独的一台服务器上，称之为计算节点。

1.控制节点安装

[root@linux-node1 ~]# yum install -y openstack-nova-api openstack-nova-placement-api \
openstack-nova-conductor openstack-nova-console \
openstack-nova-novncproxy openstack-nova-scheduler

2.数据库配置

[root@linux-node1 ~]# vim /etc/nova/nova.conf
[api_database]
connection= mysql+pymysql://nova:nova@192.168.56.11/nova_api
[database]
connection= mysql+pymysql://nova:nova@192.168.56.11/nova

3.RabbitMQ配置

[root@linux-node1 ~]# vim /etc/nova/nova.conf
[DEFAULT]
transport_url = rabbit://openstack:openstack@192.168.56.11

4.Keystone相关配置

[root@linux-node1 ~]# vim /etc/nova/nova.conf
[api]
auth_strategy=keystone
[keystone_authtoken]
auth_uri = http://192.168.56.11:5000
auth_url = http://192.168.56.11:35357
memcached_servers = 192.168.56.11:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = nova

5.关闭Nova的防火墙功能

[DEFAULT]
use_neutron=true
firewall_driver = nova.virt.firewall.NoopFirewallDriver

6.VNC配置

[root@linux-node1 ~]# vim /etc/nova/nova.conf
[vnc]
enabled=true
server_listen = 0.0.0.0
server_proxyclient_address = 192.168.56.11

7.设置glance

[glance]
api_servers = http://192.168.56.11:9292

8.在 [oslo_concurrency] 部分，配置锁路径：

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

9.设置启用的api

[DEFAULT]
enabled_apis=osapi_compute,metadata

10.设置placement

[placement]
os_region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://192.168.56.11:35357/v3
username = placement
password = placement

11.修改nova-placement-api.conf

[root@linux-node1 ~]# vim /etc/httpd/conf.d/00-nova-placement-api.conf
<Directory /usr/bin>
   <IfVersion >= 2.4>
      Require all granted
   </IfVersion>
   <IfVersion < 2.4>
      Order allow,deny
      Allow from all
   </IfVersion>
</Directory>
</VirtualHost>
# systemctl restart httpd

12.同步数据库

[root@linux-node1 ~]# su -s /bin/sh -c "nova-manage api_db sync" nova

注册cell0数据库
[root@linux-node1 ~]# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova

13.创建cell1的cell

[root@linux-node1 ~]# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova

14.同步nova数据库

[root@linux-node1 ~]# su -s /bin/sh -c "nova-manage db sync" nova

15.验证cell0和cell1的注册是否正确

[root@linux-node1 ~]# nova-manage cell_v2 list_cells

16.测试数据库同步情况

[root@linux-node1 ~]#mysql -h 192.168.56.11 -unova -pnova -e " use nova;show tables;"
[root@linux-node1 ~]#mysql -h 192.168.56.11 -unova -pnova -e " use nova_api;show tables;"

17.启动Nova Service

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

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

18.Nova服务注册

# source admin-openstack.sh
# openstack service create --name nova --description "OpenStack Compute" compute
# openstack endpoint create --region RegionOne compute public http://192.168.56.11:8774/v2.1
# openstack endpoint create --region RegionOne compute internal http://192.168.56.11:8774/v2.1
# openstack endpoint create --region RegionOne compute admin http://192.168.56.11:8774/v2.1

# openstack service create --name placement --description "Placement API" placement
# openstack endpoint create --region RegionOne placement public http://192.168.56.11:8778
# openstack endpoint create --region RegionOne placement internal http://192.168.56.11:8778
# openstack endpoint create --region RegionOne placement admin http://192.168.56.11:8778
验证控制节点服务
[root@linux-node1 ~]# openstack host list

计算节点安装

[root@linux-node2 ~]# yum install -y openstack-nova-compute sysfsutils

[root@linux-node1 ~]# scp /etc/nova/nova.conf 192.168.56.12:/etc/nova/nova.conf
[root@linux-node2 ~]# chown root:nova /etc/nova/nova.conf

1.删除多余的数据配置

2.修改VNC配置
计算节点需要监听所有IP，同时设置novncproxy的访问地址

[vnc]
enabled=true
server_listen = 0.0.0.0
server_proxyclient_address = 192.168.56.12
novncproxy_base_url = http://192.168.56.11:6080/vnc_auto.html

3.虚拟化适配

[root@linux-node2 ~]# egrep -c '(vmx|svm)' /proc/cpuinfo
[libvirt]
virt_type=qemu
如果返回的是非0的值，那么表示计算节点服务器支持硬件虚拟化，需要在nova.conf里面设置
[libvirt]
virt_type=kvm

启动nova-compute
# systemctl enable libvirtd.service openstack-nova-compute.service
# systemctl start libvirtd.service openstack-nova-compute.service

验证计算节点
[root@linux-node1 ~]# openstack host list

计算节点加入控制节点
[root@linux-node1 ~]# su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova