5. 安装nova（计算节点）— OpenStack Queens 三节点部署

本操作通常在计算节点上完成。

安装nova-kvm软件包

root@compute:~# apt install nova-compute-kvm nova-compute -y

配置nova

由于官方配置文件修改较为麻烦，这里直接创建一个新的配置文件

root@compute:~# mv /etc/nova/nova.conf /etc/nova/nova.conf.org
root@compute:~# vi /etc/nova/nova.conf

# 添加以下内容，保存退出
[DEFAULT]
# 设置控制节点IP
my_ip = 10.0.0.7
state_path = /var/lib/nova
enabled_apis = osapi_compute,metadata
log_dir = /var/log/nova
transport_url = rabbit://openstack:root@controller

[api]
auth_strategy = keystone

[vnc]
enabled = True
server_listen = 0.0.0.0
server_proxyclient_address = $my_ip
novncproxy_base_url = http://controller:6080/vnc_auto.html

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

[oslo_concurrency]
lock_path = $state_path/tmp

[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:5000
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = root

[placement]
auth_url = http://controller:5000
os_region_name = RegionOne
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = placement
password = root

[wsgi]
api_paste_config = /etc/nova/api-paste.ini

因为配置文件是新建的，这里把权限加回去

root@compute:~# chmod 640 /etc/nova/nova.conf
root@compute:~# chgrp nova /etc/nova/nova.conf

重启nova-compute

root@compute:~# systemctl restart nova-compute

检查虚拟化开启状态

检查虚拟化是否开启，如返回非0则为开启

root@compute:~# egrep -c '(vmx|svm)' /proc/cpuinfo
2

如果上面命令执行结果不为0，则跳过这一步，如果为0，则需要执行下面这一步

root@compute:~# vi /etc/nova/nova-compute.conf
# 找到[libvirt]这一项，将其中的virt_type修改为以下样式，没有这一项则手动添加

[libvirt]
virt_type = qemu

初始化数据库并查看服务列表

注意本操作在控制节点上运行

root@controller ~(keystone)# su -s /bin/bash nova -c "nova-manage cell_v2 discover_hosts"

查看nova服务状态

root@controller ~(keystone)# openstack compute service list
+----+------------------+------------+----------+---------+-------+----------------------------+
| ID | Binary           | Host       | Zone     | Status  | State | Updated At                 |
+----+------------------+------------+----------+---------+-------+----------------------------+
|  3 | nova-conductor   | controller | internal | enabled | up    | 2020-04-26T07:36:56.000000 |
|  4 | nova-scheduler   | controller | internal | enabled | up    | 2020-04-26T07:36:57.000000 |
|  5 | nova-consoleauth | controller | internal | enabled | up    | 2020-04-26T07:36:54.000000 |
|  6 | nova-compute     | compute    | nova     | enabled | up    | 2020-04-26T07:36:55.000000 |
+----+------------------+------------+----------+---------+-------+----------------------------+

创建flavor，供后续创建虚机使用

root@controller ~(keystone)# openstack flavor create --id 0 --vcpus 1 --ram 2048 --disk 10 m1.small
+----------------------------+----------+
| Field                      | Value    |
+----------------------------+----------+
| OS-FLV-DISABLED:disabled   | False    |
| OS-FLV-EXT-DATA:ephemeral  | 0        |
| disk                       | 10       |
| id                         | 0        |
| name                       | m1.small |
| os-flavor-access:is_public | True     |
| properties                 |          |
| ram                        | 2048     |
| rxtx_factor                | 1.0      |
| swap                       |          |
| vcpus                      | 1        |
+----------------------------+----------+

参考

• Server World
• DennisCai's blog