簡介

　　本次部署nova組件，分別部署nova和nova-compute，nova部署到controller節點，nova-compute部署到另一臺設備，這樣部署說明nova-compute是可以部署多個進行橫向擴展的。下邊開始部署nova組件，controller節點IP 192.168.46.130，nova-compute節點IP 192.168.46.133

部署controller nova

創建數據庫

　　與其他組件的部署一樣，首先需要創建nova需要的數據庫，操作如下：

$ mysql -u root -p

　　創建nova_api、nova、nova_cell0數據庫

MariaDB [(none)]> CREATE DATABASE nova_api;
MariaDB [(none)]> CREATE DATABASE nova;
MariaDB [(none)]> CREATE DATABASE nova_cell0;

　　授權數據庫

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'nova';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'nova';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'nova';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'nova';

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'nova';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'nova';

組件部署

　　首先設置所需要的環境變量，這個在前邊組件的部署中有過說明：

[root@localhost ~]# source admin-openstack.sh

1、創建nova user

$ openstack user create --domain default --password-prompt nova

User Password:
Repeat User Password:
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 8a7dbf5279404537b1c7b86c033620fe |
| name                | nova                             |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

2、爲nova用戶設置admin角色和項目

$ openstack role add --project service --user nova admin

3、註冊服務

$ openstack service create --name nova --description "OpenStack Compute" compute

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Compute                |
| enabled     | True                             |
| id          | 060d59eac51b4594815603d75a00aba2 |
| name        | nova                             |
| type        | compute                          |
+-------------+----------------------------------+

4、註冊endpoints

$ openstack endpoint create --region RegionOne compute public http://192.168.46.130:8774/v2.1

+--------------+-------------------------------------------+
| Field        | Value                                     |
+--------------+-------------------------------------------+
| enabled      | True                                      |
| id           | 3c1caa473bfe4390a11e7177894bcc7b          |
| interface    | public                                    |
| region       | RegionOne                                 |
| region_id    | RegionOne                                 |
| service_id   | 060d59eac51b4594815603d75a00aba2          |
| service_name | nova                                      |
| service_type | compute                                   |
| url          | http://192.168.46.130:8774/v2.1           |
+--------------+-------------------------------------------+

$ openstack endpoint create --region RegionOne compute internal http://192.168.46.130:8774/v2.1

+--------------+-------------------------------------------+
| Field        | Value                                     |
+--------------+-------------------------------------------+
| enabled      | True                                      |
| id           | e3c918de680746a586eac1f2d9bc10ab          |
| interface    | internal                                  |
| region       | RegionOne                                 |
| region_id    | RegionOne                                 |
| service_id   | 060d59eac51b4594815603d75a00aba2          |
| service_name | nova                                      |
| service_type | compute                                   |
| url          | http://192.168.46.130:8774/v2.1           |
+--------------+-------------------------------------------+

$ openstack endpoint create --region RegionOne compute admin http://192.168.46.130:8774/v2.1

+--------------+-------------------------------------------+
| Field        | Value                                     |
+--------------+-------------------------------------------+
| enabled      | True                                      |
| id           | 38f7af91666a47cfb97b4dc790b94424          |
| interface    | admin                                     |
| region       | RegionOne                                 |
| region_id    | RegionOne                                 |
| service_id   | 060d59eac51b4594815603d75a00aba2          |
| service_name | nova                                      |
| service_type | compute                                   |
| url          | http://192.168.46.130:8774/v2.1           |
+--------------+-------------------------------------------+

5、創建Placement service

$ openstack user create --domain default --password-prompt placement

User Password:
Repeat User Password:
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | fa742015a6494a949f67629884fc7ec8 |
| name                | placement                        |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+

6、爲Placement service添加項目和角色

$ openstack role add --project service --user placement admin

7、註冊Placement服務

$ openstack service create --name placement --description "Placement API" placement
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | Placement API                    |
| enabled     | True                             |
| id          | 2d1a27022e6e4185b86adac4444c495f |
| name        | placement                        |
| type        | placement                        |
+-------------+----------------------------------+

8、爲Placement服務註冊endpoints

$ openstack endpoint create --region RegionOne placement public http://192.168.46.130:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 2b1b2637908b4137a9c2e0470487cbc0 |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 2d1a27022e6e4185b86adac4444c495f |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://192.168.46.130:8778       |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne placement internal http://192.168.46.130:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 02bcda9a150a4bd7993ff4879df971ab |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 2d1a27022e6e4185b86adac4444c495f |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://192.168.46.130:8778       |
+--------------+----------------------------------+

$ openstack endpoint create --region RegionOne placement admin http://192.168.46.130:8778
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | 3d71177b9e0f406f98cbff198d74b182 |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 2d1a27022e6e4185b86adac4444c495f |
| service_name | placement                        |
| service_type | placement                        |
| url          | http://192.168.46.130:8778       |
+--------------+----------------------------------+

配置組件

安裝組件包

# yum install openstack-nova-api openstack-nova-conductor \
  openstack-nova-console openstack-nova-novncproxy \
  openstack-nova-scheduler openstack-nova-placement-api

修改/etc/nova/nova.conf配置文件

1、設置對外的API

[DEFAULT]
# ...
enabled_apis = osapi_compute,metadata

2、配置數據庫

[api_database]
# ...
connection = mysql+pymysql://nova:[email protected]/nova_api

[database]
# ...
connection = mysql+pymysql://nova:[email protected]/nova

3、配置RabbitMQ

[DEFAULT]
# ...
transport_url = rabbit://openstack:[email protected]

4、打開keystone認證和配置認證token

[api]
# ...
auth_strategy = keystone

[keystone_authtoken]
auth_uri = http://192.168.46.130:5000
auth_url = http://192.168.46.130:35357
memcached_servers = 192.168.46.130:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = nova

5、關閉防火牆配置

[DEFAULT]
# ...
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver

6、vnc配置

[vnc]
enabled = true
# ...
vncserver_listen = 192.168.46.130
vncserver_proxyclient_address = 192.168.46.130

7、配置本地鏡像服務API

[glance]
# ...
api_servers= http://192.168.46.130:9292

8、鎖文件路徑

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

9、配置Placement API

[placement]
os_region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://192.168.46.130:35357/v3
username = placement
password = placement

10、修改當前版本bug，編輯/etc/httpd/conf.d/00-nova-placement-api.conf文件，增加以下代碼

<Directory /usr/bin>
   <IfVersion >= 2.4>
      Require all granted
   </IfVersion>
   <IfVersion < 2.4>
      Order allow,deny
      Allow from all
   </IfVersion>
</Directory>

11、啓動httpd服務

# systemctl restart httpd

最後的配置

1、同步cell0數據庫

# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova

2、創建cell1

# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
109e1d4b-536a-40d0-83c6-5f121b82b650

3、同步nova數據庫

# su -s /bin/sh -c "nova-manage db sync" nova

4、驗證cell0和cell1

# nova-manage cell_v2 list_cells
+-------+--------------------------------------+
| Name  | UUID                                 |
+-------+--------------------------------------+
| cell1 | 109e1d4b-536a-40d0-83c6-5f121b82b650 |
| cell0 | 00000000-0000-0000-0000-000000000000 |
+-------+--------------------------------------+

配置服務自動啓動

# 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

部署compute node

1、安裝包

# yum install openstack-nova-compute

2、編輯/etc/nova/nova.conf配置文件

打開API

[DEFAULT]
# ...
enabled_apis = osapi_compute,metadata

配置RabbitMQ

[DEFAULT]
# ...
transport_url= rabbit://openstack:[email protected]

配置keystone認證

[api]
# ...
auth_strategy = keystone

[keystone_authtoken]
auth_uri = http://192.168.46.130:5000
auth_url = http://192.168.46.130:35357
memcached_servers = 192.168.46.130:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = nova

關閉防火牆驅動

[DEFAULT]
# ...
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver

vnc配置

[vnc]
# ...
enabled = True
vncserver_listen= 192.168.46.133
vncserver_proxyclient_address= 192.168.46.133
novncproxy_base_url=http://192.168.46.130:6080/vnc_auto.html

配置Glance服務API

[glance]
# ...
api_servers= http://192.168.46.130:9292

鎖文件路徑

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

配置Placement API

[placement]
os_region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://192.168.46.130:35357/v3
username = placement
password = placement

配置libvirt，在生產環境中一般使用kvm

[libvirt]
# ...
virt_type = qemu

啓動服務

# systemctl enable libvirtd.service openstack-nova-compute.service  //設置自動啓動
# systemctl start libvirtd.service openstack-nova-compute.service   //啓動服務

問題記錄

在以上執行啓動服務時，命令行長時間卡住，一般說明連接RabbitMQ失敗，可以在/var/log/nova/nova-compute.log文件中查看詳細報錯，報錯如下：

2019-05-11 12:02:57.432 5308 ERROR oslo.messaging._drivers.impl_rabbit [req-503bd955-7075-44a8-b553-f70b9437ff3b - - - - -] [84517112-2f15-4dfa-b9f0-e195a80a67c2] AMQP server on 192.168.46.130:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds.: error: [Errno 113] EHOSTUNREACH
2019-05-11 12:03:29.606 5308 ERROR oslo.messaging._drivers.impl_rabbit [req-503bd955-7075-44a8-b553-f70b9437ff3b - - - - -] [84517112-2f15-4dfa-b9f0-e195a80a67c2] AMQP server on 192.168.46.130:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds.: error: [Errno 113] EHOSTUNREACH
2019-05-11 12:04:01.792 5308 ERROR oslo.messaging._drivers.impl_rabbit [req-503bd955-7075-44a8-b553-f70b9437ff3b - - - - -] [84517112-2f15-4dfa-b9f0-e195a80a67c2] AMQP server on 192.168.46.130:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 32 seconds.: error: [Errno 113] EHOSTUNREACH

以上錯誤說明nova-compute節點連接controller節點的RabbitMQ失敗了，一般原因是controller上配置了iptables，需要設置iptables把RabbitMQ的5672端口打開。設置如下：

# iptables -I INPUT -p tcp --dport 5672 -j ACCEPT
#添加規則
# service iptables save
#保存設置
# service iptables restart
# 重啓iptables，生效規則

添加compute node到cell數據庫

在controller node上查看，確定在數據庫中有nova-compute

[root@localhost ~]# source admin-openstack.sh

[root@localhost ~]# openstack compute service list
+----+------------------+-----------------------+----------+---------+-------+----------------------------+
| ID | Binary           | Host                  | Zone     | Status  | State | Updated At                 |
+----+------------------+-----------------------+----------+---------+-------+----------------------------+
|  1 | nova-consoleauth | localhost.localdomain | internal | enabled | up    | 2019-05-12T10:36:09.000000 |
|  2 | nova-conductor   | localhost.localdomain | internal | enabled | up    | 2019-05-12T10:36:09.000000 |
|  3 | nova-scheduler   | localhost.localdomain | internal | enabled | up    | 2019-05-12T10:36:10.000000 |
|  8 | nova-compute     | node2                 | nova     | enabled | up    | 2019-05-12T10:36:07.000000 |
+----+------------------+-----------------------+----------+---------+-------+----------------------------+

發現compute node，每次添加新的compute nodes時，都需要在controller node上執行nova-manage cell_v2 discover_hosts註冊新的compute nodes

# 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 compute nodes from cell 'cell1': ad5a5985-a719-4567-98d8-8d148aaae4bc
Found 1 computes in cell: ad5a5985-a719-4567-98d8-8d148aaae4bc
Checking host mapping for compute host 'compute': fe58ddc1-1d65-4f87-9456-bc040dc106b3
Creating host mapping for compute host 'compute': fe58ddc1-1d65-4f87-9456-bc040dc106b3

　　通過以上的組件部署，nova-compute可以有多個，並且當配置完一個nova-compute時，其他的與此類似。

openstack部署之nova

簡介

部署controller nova

創建數據庫

組件部署

配置組件

最後的配置

配置服務自動啓動

部署compute node

問題記錄

添加compute node到cell數據庫

移位操作搞定兩數之商

如何基於surging跨網關跨語言進行緩存降級

2024合集

程序員天天 CURD，怎麼才能成長，職業發展的思考(2)

教你用Perl實現Smgp協議

如何通過前端表格控件在10分鐘內完成一張分組報表？

win11關閉自動檢測病毒刪文件

通用代碼生成器簡介

lightdb 單機模式下數據庫平移

千兆寬帶實際網速能到達多少？

雲ids的設計方案

使用Wireshark解密SSL/TLS數據包並調試

ALPN協議

六數字簽名 - 消息到底是誰寫的

使用開源庫libuuid庫生成隨機串

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結