nova-compute一般运行在计算节点上，通过message Queue接收管理VM的生命周期
nova-compute通过Libvirt管理KVM，通过XenAPI管理Xen等
一、安装OpenStack仓库
yum install -y centos-release-openstack-queens
二、安装openstack-nova-compute
[root@linux-node2 ~]# yum install -y openstack-nova-compute sysfsutils
三、拷贝控制节点配置文件
[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
四、删除多余的数据配置
connection= mysql+pymysql://nova:nova@192.168.56.11/nova
connection= mysql+pymysql://nova:nova@192.168.56.11/nova_api
五、修改vnc配置
[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
六、虚拟化适配
[root@linux-node2 ~]# egrep -c '(vmx|svm)' /proc/cpuinfo
2
[root@linux-node2 ~]# vim /etc/nova/nova.conf
[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
生产环境一点要设置virt_type=kvm
七、启动nova-compute
[root@linux-node2 ~]# systemctl enable libvirtd.service openstack-nova-compute.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service to /usr/lib/systemd/system/openstack-nova-compute.service.
[root@linux-node2 ~]# systemctl start libvirtd.service openstack-nova-compute.service
八、设置控制节点和计算节点的时间一致
[root@linux-node1 ~]# yum install ntpdate -y
[root@linux-node1 ~]# ntpdate time1.aliyun.com
Sep :: ntpdate[]: adjust time server 203.107.6.88 offset 0.018686 sec
[root@linux-node2 ~]# yum install ntpdate -y
[root@linux-node2 ~]# ntpdate time1.aliyun.com
Sep :: ntpdate[]: adjust time server 203.107.6.88 offset 0.018686 sec
九、验证
控制节点执行
[root@linux-node1 ~]# source admin-openstack.sh
[root@linux-node1 ~]# openstack host list
+-------------------------+-------------+----------+
| Host Name | Service | Zone |
+-------------------------+-------------+----------+
| linux-node1.example.com | conductor | internal |
| linux-node1.example.com | consoleauth | internal |
| linux-node1.example.com | scheduler | internal |
| linux-node2.example.com | compute | nova |
+-------------------------+-------------+----------+
[root@linux-node1 ~]#
[root@linux-node1 ~]# openstack compute service list
+----+------------------+-------------------------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+------------------+-------------------------+----------+---------+-------+----------------------------+
| 1 | nova-conductor | linux-node1.example.com | internal | enabled | up | 2018-09-19T08:59:22.000000 |
| 2 | nova-consoleauth | linux-node1.example.com | internal | enabled | up | 2018-09-19T08:59:22.000000 |
| 3 | nova-scheduler | linux-node1.example.com | internal | enabled | up | 2018-09-19T08:59:22.000000 |
| 6 | nova-compute | linux-node2.example.com | nova | enabled | up | 2018-09-19T08:59:13.000000 |
+----+------------------+-------------------------+----------+---------+-------+----------------------------+
[root@linux-node1 ~]#
[root@linux-node1 ~]# openstack catalog list
+-----------+-----------+--------------------------------------------+
| Name | Type | Endpoints |
+-----------+-----------+--------------------------------------------+
| keystone | identity | RegionOne |
| | | admin: http://192.168.56.11:35357/v3/ |
| | | RegionOne |
| | | public: http://192.168.56.11:5000/v3/ |
| | | RegionOne |
| | | internal: http://192.168.56.11:35357/v3/ |
| | | |
| placement | placement | RegionOne |
| | | public: http://192.168.56.11:8778 |
| | | RegionOne |
| | | admin: http://192.168.56.11:8778 |
| | | RegionOne |
| | | internal: http://192.168.56.11:8778 |
| | | |
| nova | compute | RegionOne |
| | | internal: http://192.168.56.11:8774/v2.1 |
| | | RegionOne |
| | | public: http://192.168.56.11:8774/v2.1 |
| | | RegionOne |
| | | admin: http://192.168.56.11:8774/v2.1 |
| | | |
| glance | image | RegionOne |
| | | public: http://192.168.56.11:9292 |
| | | RegionOne |
| | | admin: http://192.168.56.11:9292 |
| | | RegionOne |
| | | internal: http://192.168.56.11:9292 |
| | | |
+-----------+-----------+--------------------------------------------+
[root@linux-node1 ~]#
十、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
/usr/lib/python2./site-packages/oslo_db/sqlalchemy/enginefacade.py:: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
Found cell mappings.
Skipping cell0 since it does not contain hosts.
Getting computes from cell 'cell1': 6cc05670-542c-4aca-a9c4-dc4219a19cf2
Checking host mapping for compute host 'linux-node2.example.com': 7a3cec97-0ddf-49eb-b96c-e8b280c73095
Creating host mapping for compute host 'linux-node2.example.com': 7a3cec97-0ddf-49eb-b96c-e8b280c73095
Found unmapped computes in cell: 6cc05670-542c-4aca-a9c4-dc4219a19cf2
如果不想手动加的话，可以修改vim /etc/nova/nova.conf 并重启
discover_hosts_in_cells_interval=300 ##表示每5分钟检查一次
到此计算节点安装完成！！！！！