目录
Nove简介：
1、登录数据库配置（在controller执行）
1.1登录数据库
1.2数据库里创建nova-api
1.3数据库登录授权
1.4创建nova用户
1.5添加admin用户为nova用户
1.6创建nova服务端点
1.7创建compute API 服务端点
1.8创建一个placement服务用户
1.9添加placement用户为项目服务admin角色
1.10创建在服务目录创建Placement API服务
1.11创建Placement API服务端点
2、安装nova（在controller执行）
2.1安装软件包
2.2编辑 /etc/nova/nova.conf
2.3重启HTTP服务、同步数据库
2.4开启计算各种服务
2.5做一个重启脚本
3、然后再计算节点上配置（在compute执行）
3.1计算节点上安装nova
3.2修改/etc/nova/nova.conf配置
3.3启动服务
4、在controller节点上验证
4.1在controller节点上验证有没有计算节点
4.2发现计算节点
4.3配置自动发现节点
Nove简介：
nova组件是用来建虚拟机的（功能：负责响应虚拟机创建请求、调度、销毁云主机）
nova主要组成：
- (1).nova api service------安装在controller节点：接受和相应客户端发送的请求，nova-api负责接收和响应终端用户由管虚拟机和云硬盘的请求。就是说我想在openstack中创建个虚拟机(创建虚拟机最终在nova中完成)，我发出的请求就被nova-api接收并发送到nova中去，然后在进行下一步具体操作，nova-api是整个nova的入口。它接收用户请求，将指令发送到消息队列，由相应的服务执行相关的指令消息，他提供了openstack API，亚马逊EC2 API，以及管理员控制API。
- (2)nova-api-metadata service：接受从实例元数据发来的请求，该服务通常于nova-network服务在对主机模式下运行，也就说由多个nova节点才会用得到
- (3)nova compute------安装在compute节点:是nova组件中最核心的服务，它实现了管理虚拟机的功能，实现了在计算节点上创建，启动，暂停，关闭，和删除虚拟机。
- (4)nova Scheduler：主要起到调度作用，假如现在又多台nova计算节点，当用户发起创建虚拟机的请求时，nova Scheduler会决定把虚拟机创建放在那个计算节点上。
- (5)nova conductor：主要提供数据查询功能，提供nova compute和Database之间的交互数据，那为啥nova compute不直接去访问数据库呢？只是为防止nova compute被攻击后，数据库就会不安全，所以需要有nova conductor去调度
1、登录数据库配置（在controller执行）
1.1登录数据库
[root@controller ~]# mysql -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 18
Server version: 10.3.20-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> 1.2数据库里创建nova-api
MariaDB [(none)]> CREATE DATABASE nova_api;
Query OK, 1 row affected (0.001 sec)
MariaDB [(none)]> CREATE DATABASE nova;
Query OK, 1 row affected (0.002 sec)
MariaDB [(none)]> CREATE DATABASE nova_cell0;
Query OK, 1 row affected (0.001 sec)
1.3数据库登录授权
GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY '000000';
GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY '000000';
GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY '000000';
GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY '000000';
GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY '000000';
GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY '000000';【记得退出数据库】
MariaDB [(none)]> quit;
Bye
1.4创建nova用户
openstack user create --domain default --password nova nova 
1.5添加admin用户为nova用户
openstack role add --project service --user nova admin
1.6创建nova服务端点
openstack service create --name nova --description "OpenStack Compute" compute
1.7创建compute API 服务端点
openstack endpoint create --region RegionOne compute public http://controller:8774/v2.1 
1.8创建一个placement服务用户
openstack user create --domain default --password-prompt placement 
1.9添加placement用户为项目服务admin角色
openstack role add --project service --user placement admin1.10创建在服务目录创建Placement API服务
openstack service create --name placement --description "Placement API" placement1.11创建Placement API服务端点
openstack endpoint create --region RegionOne placement public http://controller:8778 
2、安装nova（在controller执行）
2.1安装软件包
yum install openstack-nova-api openstack-nova-conductor openstack-nova-console openstack-nova-novncproxy openstack-nova-scheduler openstack-nova-placement-api -y2.2编辑 /etc/nova/nova.conf
[root@controller ~]# cp /etc/nova/nova.conf{,.bak}
[root@controller ~]# grep -Ev "^$|#" /etc/nova/nova.conf.bak > /etc/nova/nova.conf
[root@controller ~]# vi /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:123456@controller
my_ip = 172.16.21.37
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api_database]
connection = mysql+pymysql://nova:000000@controller/nova_api
[database]
connection = mysql+pymysql://nova:000000@controller/nova
[api]
auth_strategy = keystone
[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = 000000
[vnc]
enabled = true
server_listen = $my_ip
server_proxyclient_address = $my_ip
[glance]
api_servers = http://controller:9292
[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:35357/v3
username = placement
password = 000000##由于软件包的一个bug在/etc/httpd/conf.d/00-nova-placement-api.conf文件中添加如下配置
<Directory /usr/bin>
<IfVersion >= 2.4>
Require all granted
</IfVersion>
<IfVersion < 2.4>
Order allow,deny
Allow from all
</IfVersion>
</Directory>2.3重启HTTP服务、同步数据库
systemctl restart httpd[root@controller ~]# su -s /bin/sh -c "nova-manage api_db sync" nova
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
2e46e668-cfaf-4034-b6a8-154dc925c12d
[root@controller ~]# su -s /bin/sh -c "nova-manage db sync" nova
/usr/lib/python2.7/site-packages/pymysql/cursors.py:170: Warning: (1831, u'Duplicate index `block_device_mapping_instance_uuid_virtual_name_device_name_idx`. This is deprecated and will be disallowed in a future release')
result = self._query(query)
/usr/lib/python2.7/site-packages/pymysql/cursors.py:170: Warning: (1831, u'Duplicate index `uniq_instances0uuid`. This is deprecated and will be disallowed in a future release')
result = self._query(query)
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova
+-------+--------------------------------------+------------------------------------------+-------------------------------------------------+----------+
| Name | UUID | Transport URL | Database Connection | Disabled |
+-------+--------------------------------------+------------------------------------------+-------------------------------------------------+----------+
| cell0 | 00000000-0000-0000-0000-000000000000 | none:/ | mysql+pymysql://nova:****@controller/nova_cell0 | False |
| cell1 | 2e46e668-cfaf-4034-b6a8-154dc925c12d | rabbit://openstack:****@controller:5672/ | mysql+pymysql://nova:****@controller/nova | False |
+-------+--------------------------------------+------------------------------------------+-------------------------------------------------+----------+
2.4开启计算各种服务
[root@controller ~]# systemctl enable \
openstack-nova-api.service \
openstack-nova-scheduler.service \
openstack-nova-conductor.service \
openstack-nova-novncproxy.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-api.service to /usr/lib/systemd/system/openstack-nova-api.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-scheduler.service to /usr/lib/systemd/system/openstack-nova-scheduler.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-conductor.service to /usr/lib/systemd/system/openstack-nova-conductor.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-novncproxy.service to /usr/lib/systemd/system/openstack-nova-novncproxy.service.2.5做一个重启脚本
[root@controller ~]# vi nova-restart.sh
#!/bin/bash
systemctl restart openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
[root@controller ~]# bash nova-restart.sh
3、然后再计算节点上配置（在compute执行）
3.1计算节点上安装nova
[root@computer ~]# yum install openstack-nova-compute -y 3.2修改/etc/nova/nova.conf配置
[root@computer ~]# yum install openstack-nova-compute -y^C
[root@computer ~]# cp /etc/nova/nova.conf{,.bak}
[root@computer ~]# grep -Ev "^$|#" /etc/nova/nova.conf.bak > /etc/nova/nova.conf
[root@computer ~]# vi /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:000000@controller
my_ip = 172.16.21.37
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
auth_strategy = keystone
[keystone_authtoken]
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = 000000
[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 = /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:35357/v3
username = placement
password = 0000003.3启动服务
[root@computer ~]# 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@computer ~]# systemctl start libvirtd
[root@computer ~]# systemctl start libvirtd.service openstack-nova-compute.service
4、在controller节点上验证
4.1在controller节点上验证有没有计算节点
[root@controller ~]# openstack compute service list --service nova-compute
+----+--------------+----------+------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+--------------+----------+------+---------+-------+----------------------------+
| 9 | nova-compute | computer | nova | enabled | up | 2023-02-10T15:15:29.000000 |
+----+--------------+----------+------+---------+-------+----------------------------+
4.2发现计算节点
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
Found 2 cell mappings.
Skipping cell0 since it does not contain hosts.
Getting computes from cell 'cell1': 87c82cc2-68f4-41d2-8427-5c959215ef1d
Checking host mapping for compute host 'computer': 833f408b-d646-483e-80eb-6f67c390fd43
Creating host mapping for compute host 'computer': 833f408b-d646-483e-80eb-6f67c390fd43
Found 1 unmapped computes in cell: 87c82cc2-68f4-41d2-8427-5c959215ef1d4.3配置自动发现节点
[root@controller ~]# vi /etc/nova/nova.conf
[scheduler]
discover_hosts_in_cells_interval = 300
nova部署完成
