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超詳細Openstack核心元件——nova部署

阿新 • • 發佈：2021-02-19

技術標籤：筆記及專案linuxopenstack

目錄

OpenStack-nova元件部署

繼之前Placement部署之後，繼續部署nova

nova元件部署位置

  • 控制節點ct
    ​nova-api（nova主服務）
    ​nova-scheduler（nova排程服務）
    ​nova-conductor（nova資料庫服務，提供資料庫訪問）
    ​nova-novncproxy（nova的vnc服務，提供例項的控制檯）

  • 計算節點c1、c2
    nova-compute（nova計算服務）

計算節點Nova服務配置(CT配置)

1. 建立nova資料庫，並執行授權操作

[[email protected] ~]# mysql -uroot -p
Enter password: 
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 55
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)]> CREATE DATABASE nova_api;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> CREATE DATABASE nova;
Query OK, 1 row affected (0.000 sec)

MariaDB [(none)]> CREATE
 
 DATABASE nova_cell0;
Query OK, 1 row affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.000 sec)

MariaDB [(none)]> exit
Bye

2. 管理Nova使用者及服務

  • 建立nova使用者
[[email protected] ~]# openstack user create --domain default --password NOVA_PASS nova
+---------------------+----------------------------------+
| Field               | Value                            |
+---------------------+----------------------------------+
| domain_id           | default                          |
| enabled             | True                             |
| id                  | 93e904c4063545de83350cd21b7c6b44 |
| name                | nova                             |
| options             | {}                               |
| password_expires_at | None                             |
+---------------------+----------------------------------+
//把nova使用者新增到service專案，擁有admin許可權

[[email protected] ~]# openstack role add --project service --user nova admin
  • 建立nova服務
[[email protected] ~]# openstack service create --name nova --description "OpenStack Compute" compute
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Compute                |
| enabled     | True                             |
| id          | 721156ee0ff54b468f8e9ff1b65af18c |
| name        | nova                             |
| type        | compute                          |
+-------------+----------------------------------+
  • 給Nova服務關聯endpoint（端點）
[[email protected] ~]# openstack endpoint create --region RegionOne compute public http://ct:8774/v2.1
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | cb13f505671a453ab7c1be84e8774bfc |
| interface    | public                           |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 721156ee0ff54b468f8e9ff1b65af18c |
| service_name | nova                             |
| service_type | compute                          |
| url          | http://ct:8774/v2.1              |
+--------------+----------------------------------+

[[email protected] ~]# openstack endpoint create --region RegionOne compute internal http://ct:8774/v2.1
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | f769cea83d5343a787203bb5da4de4b0 |
| interface    | internal                         |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 721156ee0ff54b468f8e9ff1b65af18c |
| service_name | nova                             |
| service_type | compute                          |
| url          | http://ct:8774/v2.1              |
+--------------+----------------------------------+

[[email protected] ~]# openstack endpoint create --region RegionOne compute admin http://ct:8774/v2.1
+--------------+----------------------------------+
| Field        | Value                            |
+--------------+----------------------------------+
| enabled      | True                             |
| id           | d9bfe772d4ab4a6c9cd3fb2b3a93533d |
| interface    | admin                            |
| region       | RegionOne                        |
| region_id    | RegionOne                        |
| service_id   | 721156ee0ff54b468f8e9ff1b65af18c |
| service_name | nova                             |
| service_type | compute                          |
| url          | http://ct:8774/v2.1              |
+--------------+----------------------------------+
  • 安裝nova元件（nova-api、nova-conductor、nova-novncproxy、nova-scheduler）
[[email protected] ~]# yum -y install openstack-nova-api openstack-nova-conductor openstack-nova-novncproxy openstack-nova-scheduler

3. 修改nova配置檔案(nova.conf)

  • 拷貝備份配置檔案
[[email protected] ~]# cp -a /etc/nova/nova.conf{,.bak}
[[email protected] ~]# grep -Ev '^$|#' /etc/nova/nova.conf.bak > /etc/nova/nova.conf
  • 修改nova.conf
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.100.10
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron true
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf api_database connection mysql+pymysql://nova:NOVA_DBPASS@ct/nova_api
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf database connection mysql+pymysql://nova:NOVA_DBPASS@ct/nova
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement_database connection mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://ct:5000/v3
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers ct:11211
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc enabled true
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc server_listen ' $my_ip'
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address ' $my_ip'
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf glance api_servers http://ct:9292
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement region_name RegionOne
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement project_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement project_name service
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement auth_type password
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement user_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement auth_url http://ct:5000/v3
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement username placement
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement password PLACEMENT_PASS
  • 檢視nova.conf
[[email protected] ~]# cat /etc/nova/nova.conf

[DEFAULT]
enabled_apis = osapi_compute,metadata		//指定支援的api型別
my_ip = 192.168.100.10				//定義本地IP
use_neutron = true					//通過neutron獲取IP地址
firewall_driver = nova.virt.firewall.NoopFirewallDriver
transport_url = rabbit://openstack:RABBIT_PASS@ct	#指定連線的rabbitmq

[api]
auth_strategy = keystone				//指定使用keystone認證

[api_database]
connection = mysql+pymysql://nova:NOVA_DBPASS@ct/nova_api

[barbican]
[cache]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]

[database]
connection = mysql+pymysql://nova:NOVA_DBPASS@ct/nova

[devices]
[ephemeral_storage_encryption]
[filter_scheduler]

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

[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]

[keystone_authtoken]				//配置keystone的認證資訊
auth_url = http://ct:5000/v3				//到此url去認證
memcached_servers = ct:11211			//memcache資料庫地址:埠
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = NOVA_PASS

[libvirt]
[metrics]
[mks]
[neutron]
[notifications]
[osapi_v21]

[oslo_concurrency]					//指定鎖路徑
lock_path = /var/lib/nova/tmp			//鎖的作用是建立虛擬機器時，在執行某個操作的時候，需要等此步驟執行完後才能執行下一個步驟，不能並行執行，保證操作是一步一步的執行

[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]

[pci]
[placement]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://ct:5000/v3
username = placement
password = PLACEMENT_PASS

[powervm]
[privsep]
[profiler]
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]						//此處如果配置不正確，則連線不上虛擬機器的控制檯
enabled = true		
server_listen =  $my_ip				//指定vnc的監聽地址
server_proxyclient_address =  $my_ip			//server的客戶端地址為本機地址；此地址是管理網的地址

[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]

[placement_database]
connection = mysql+pymysql://placement:PLACEMENT_DBPASS@ct/placement

4. 初始化資料庫

  • 初始化nova_api資料庫
[[email protected] ~]# su -s /bin/sh -c "nova-manage api_db sync" nova

5. 註冊cell0資料庫；nova服務內部把資源劃分到不同的cell中，把計算節點劃分到不同的cell中；openstack內部基於cell把計算節點進行邏輯上的分組

[[email protected] ~]# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
  • 建立cell1單元格
[[email protected] ~]# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
bffae239-c193-421d-80a1-b894767a098c
  • 初始化nova資料庫；可以通過 /var/log/nova/nova-manage.log 日誌判斷是否初始化成功
[[email protected] ~]# 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)
  • 可使用以下命令驗證cell0和cell1是否註冊成功
[[email protected] ~]# su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova  //驗證cell0和cell1元件是否註冊成功
+-------+--------------------------------------+----------------------------+-----------------------------------------+----------+
|  名稱 |                 UUID                 |       Transport URL        |                資料庫連線               | Disabled |
+-------+--------------------------------------+----------------------------+-----------------------------------------+----------+
| cell0 | 00000000-0000-0000-0000-000000000000 |           none:/           | mysql+pymysql://nova:****@ct/nova_cell0 |  False   |
| cell1 | bffae239-c193-421d-80a1-b894767a098c | rabbit://openstack:****@ct |    mysql+pymysql://nova:****@ct/nova    |  False   |
+-------+--------------------------------------+----------------------------+-----------------------------------------+----------+
  1. 啟動Nova服務
[[email protected] ~]# systemctl enable openstack-nova-api.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-api.service to /usr/lib/systemd/system/openstack-nova-api.service.
[[email protected] ~]# systemctl enable openstack-nova-scheduler.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-scheduler.service to /usr/lib/systemd/system/openstack-nova-scheduler.service.
[[email protected] ~]# systemctl enable openstack-nova-conductor.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-conductor.service to /usr/lib/systemd/system/openstack-nova-conductor.service.
[[email protected] ~]# systemctl enable openstack-nova-novncproxy.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-novncproxy.service to /usr/lib/systemd/system/openstack-nova-novncproxy.service.

[[email protected] ~]# systemctl start openstack-nova-api.service
[[email protected] ~]# systemctl start openstack-nova-scheduler.service 
[[email protected] ~]# systemctl start openstack-nova-conductor.service
[[email protected] ~]# systemctl start openstack-nova-novncproxy.service

6. 檢查nova服務埠

[[email protected] ~]# netstat -tnlup|egrep '8774|8775'
tcp        0      0 0.0.0.0:8775            0.0.0.0:*               LISTEN      89211/python2       
tcp        0      0 0.0.0.0:8774            0.0.0.0:*               LISTEN      89211/python2       
[[email protected] ~]# curl http://ct:8774
{"versions": [{"status": "SUPPORTED", "updated": "2011-01-21T11:33:21Z", "links": [{"href": "http://ct:8774/v2/", "rel": "self"}], "min_version": "", "version": "", "id": "v2.0"}, {"status": "CURRENT", "updated": "2013-07-23T11:33:21Z", "links": [{"href": "http://ct:8774/v2.1/", "rel": "self"}], "min_version": "2.1", "version": "2.79", "id": "v2.1"}]}[[email protected] ~]#

在這裡插入圖片描述

計算節點配置Nova服務-c1節點配置

1. 安裝nova-compute元件

[[email protected] ~]# yum -y install openstack-nova-compute
  • 修改配置檔案
[[email protected] ~]# cp -a /etc/nova/nova.conf{,.bak}
[[email protected] ~]# grep -Ev '^$|#' /etc/nova/nova.conf.bak > /etc/nova/nova.conf

[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT transport_url rabbit://openstack:RABBIT_PASS@ct
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT my_ip 192.168.100.11
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron true
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf api auth_strategy keystone
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://ct:5000/v3
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers ct:11211
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc enabled true
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc server_listen 0.0.0.0
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc server_proxyclient_address ' $my_ip'
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf vnc novncproxy_base_url http://192.168.100.11:6080/vnc_auto.html
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf glance api_servers http://ct:9292
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement region_name RegionOne
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement project_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement project_name service
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement auth_type password
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement user_domain_name Default
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement auth_url http://ct:5000/v3
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement username placement
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf placement password PLACEMENT_PASS
[[email protected] ~]# openstack-config --set /etc/nova/nova.conf libvirt virt_type qemu
  • 檢視配置檔案
[[email protected] ~]# cd /etc/nova/
[[email protected] nova]# cat nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:RABBIT_PASS@ct
my_ip = 192.168.100.11
use_neutron = true
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
auth_strategy = keystone
[api_database]
[barbican]
[cache]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[database]
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://ct:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[keystone_authtoken]
auth_url = http://ct:5000/v3
memcached_servers = ct:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = NOVA_PASS
[libvirt]
virt_type = qemu
[metrics]
[mks]
[neutron]
[notifications]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]
[pci]
[placement]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://ct:5000/v3
username = placement
password = PLACEMENT_PASS
[powervm]
[privsep]
[profiler]
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = true
server_listen = 0.0.0.0
server_proxyclient_address =  $my_ip
novncproxy_base_url = http://192.168.100.11:6080/vnc_auto.html
[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]
  • 開啟服務
[[email protected] ~]# 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.
[[email protected] ~]# systemctl start libvirtd.service openstack-nova-compute.service

計算節點-c2（與c1相同）（除了IP地址）

controller節點操作

1. 檢視compute節點是否註冊到controller上，通過訊息佇列；需要在controller節點執行

[[email protected] ~]# openstack compute service list --service nova-compute
+----+--------------+------+------+---------+-------+----------------------------+
| ID | Binary       | Host | Zone | Status  | State | Updated At                 |
+----+--------------+------+------+---------+-------+----------------------------+
|  9 | nova-compute | c1   | nova | enabled | up    | 2021-02-18T14:11:26.000000 |
| 10 | nova-compute | c2   | nova | enabled | up    | 2021-02-18T14:11:23.000000 |
+----+--------------+------+------+---------+-------+----------------------------+

2. 掃描當前openstack中有哪些計算節點可用，發現後會把計算節點建立到cell中，後面就可以在cell中建立虛擬機器；相當於openstack內部對計算節點進行分組，把計算節點分配到不同的cell中

[[email protected] ~]# 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': bffae239-c193-421d-80a1-b894767a098c
Checking host mapping for compute host 'c1': 93382dce-69da-46a7-95a8-0e4331db8da1
Creating host mapping for compute host 'c1': 93382dce-69da-46a7-95a8-0e4331db8da1
Checking host mapping for compute host 'c2': d5c3816b-467a-4ecf-a36e-ffbc917521d4
Creating host mapping for compute host 'c2': d5c3816b-467a-4ecf-a36e-ffbc917521d4
Found 2 unmapped computes in cell: bffae239-c193-421d-80a1-b894767a098c

3. 預設每次添加個計算節點，在控制端就需要執行一次掃描，這樣會很麻煩，所以可以修改控制端nova的主配置檔案

[[email protected] ~]# vim /etc/nova/nova.conf
[scheduler]
discover_hosts_in_cells_interval = 300		//每300秒掃描一次

在這裡插入圖片描述
4. 驗證計算節點服務

  • 檢查 nova 的各個服務是否都是正常，以及 compute 服務是否註冊成功
[[email protected] ~]# openstack compute service list
+----+----------------+------+----------+---------+-------+----------------------------+
| ID | Binary         | Host | Zone     | Status  | State | Updated At                 |
+----+----------------+------+----------+---------+-------+----------------------------+
|  4 | nova-scheduler | ct   | internal | enabled | up    | 2021-02-18T14:15:29.000000 |
|  8 | nova-conductor | ct   | internal | enabled | up    | 2021-02-18T14:15:20.000000 |
|  9 | nova-compute   | c1   | nova     | enabled | up    | 2021-02-18T14:15:26.000000 |
| 10 | nova-compute   | c2   | nova     | enabled | up    | 2021-02-18T14:15:23.000000 |
+----+----------------+------+----------+---------+-------+----------------------------+
  • 檢視各個元件的 api 是否正常
[[email protected] ~]# openstack catalog list
+-----------+-----------+---------------------------------+
| Name      | Type      | Endpoints                       |
+-----------+-----------+---------------------------------+
| nova      | compute   | RegionOne                       |
|           |           |   public: http://ct:8774/v2.1   |
|           |           | RegionOne                       |
|           |           |   admin: http://ct:8774/v2.1    |
|           |           | RegionOne                       |
|           |           |   internal: http://ct:8774/v2.1 |
|           |           |                                 |
| keystone  | identity  | RegionOne                       |
|           |           |   internal: http://ct:5000/v3/  |
|           |           | RegionOne                       |
|           |           |   public: http://ct:5000/v3/    |
|           |           | RegionOne                       |
|           |           |   admin: http://ct:5000/v3/     |
|           |           |                                 |
| glance    | image     | RegionOne                       |
|           |           |   admin: http://ct:9292         |
|           |           | RegionOne                       |
|           |           |   public: http://ct:9292        |
|           |           | RegionOne                       |
|           |           |   internal: http://ct:9292      |
|           |           |                                 |
| placement | placement | RegionOne                       |
|           |           |   admin: http://ct:8778         |
|           |           | RegionOne                       |
|           |           |   public: http://ct:8778        |
|           |           | RegionOne                       |
|           |           |   internal: http://ct:8778      |
|           |           |                                 |
+-----------+-----------+---------------------------------+
  • 檢視是否能夠拿到映象
[[email protected] ~]# openstack image list
+--------------------------------------+--------+--------+
| ID                                   | Name   | Status |
+--------------------------------------+--------+--------+
| a4ff4b8f-4c46-4bc3-9c0c-2de82b257447 | cirros | active |
+--------------------------------------+--------+--------+
  • 檢視cell的api和placement的api是否正常，只要其中一個有誤，後期無法建立虛擬機器
[[email protected] ~]# nova-status upgrade check
+--------------------------------+
| Upgrade Check Results          |
+--------------------------------+
| Check: Cells v2                |
| Result: Success                |
| Details: None                  |
+--------------------------------+
| Check: Placement API           |
| Result: Success                |
| Details: None                  |
+--------------------------------+
| Check: Ironic Flavor Migration |
| Result: Success                |
| Details: None                  |
+--------------------------------+
| Check: Cinder API              |
| Result: Success                |
| Details: None                  |
+--------------------------------+

至此，nova配置完成

總結

  • Nova分為控制節點、計算節點
  • Nova元件核心功能是排程資源，在配置檔案中需要體現的部分：指向認證節點位置(URL、ENDPOINT)、呼叫服務、註冊、提供支援等，配置檔案中的所有配置引數基本都是圍繞此範圍(對例項生命週期管理）進行設定

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