計算節點安裝與設定

1. 安裝 openstack-nova-compute 套件。

   [root@ip112 ~]# yum install openstack-nova-compute
   

2. 編輯 /etc/nova/nova.conf，設定如下章節：

   [root@ip112 ~]# vim /etc/nova/nova.conf 
   [root@ip112 ~]# egrep '^(\[DEF|\[api_d|\[data|\[api|\[keyst|\[vnc|\
   \[glance|\[oslo_c|\[place|[a-z])' /etc/nova/nova.conf 
   [DEFAULT]
   enabled_apis = osapi_compute,metadata
   transport_url = rabbit://openstack:123qwe@controller
   my_ip = 163.17.10.112
   use_neutron = True
   firewall_driver = nova.virt.firewall.NoopFirewallDriver
   [api]
   auth_strategy = keystone
   [api_database]
   connection = mysql+pymysql://nova:123qwe@controller/nova_api
   [database]
   connection = mysql+pymysql://nova:123qwe@controller/nova
   [glance]
   api_servers = http://controller:9292
   [keystone]
   [keystone_authtoken]
   auth_url = http://controller:5000/v3
   memcached_servers = controller:11211
   auth_type = password
   project_domain_name = default
   user_domain_name = default
   project_name = service
   username = nova
   password = 123qwe
   [oslo_concurrency]
   lock_path = /var/lib/nova/tmp
   [placement]
   os_region_name = RegionOne
   project_domain_name = Default
   project_name = service
   auth_type = password
   user_domain_name = Default
   auth_url = http://controller:5000/v3
   username = placement
   password = 123qwe
   [vnc]
   enabled = true
   server_listen = $my_ip
   server_proxyclient_address = $my_ip
   

3. 查看主機是否支援虛擬技術，只要數字大於 1，就表示支援。

   [root@ip112 ~]# egrep -c '(vmx|svm)' /proc/cpuinfo
   40
   

4. 編輯 /etc/nova/nova.conf，在章節 libvirt 中設定虛擬化 type 為 qemu。

   [root@ip112 ~]# vim /etc/nova/nova.conf 
   [root@ip112 ~]# egrep '^(\[libvirt|v)' /etc/nova/nova.conf 
   [libvirt]
   virt_type=qemu
   

5. 啟動 libvirtd 及 openstack-nova-compute 服務，並設定開機啟動。

   [root@ip112 ~]# systemctl enable libvirtd.service openstack-nova-compute.service
   [root@ip112 ~]# systemctl start libvirtd.service openstack-nova-compute.service