[TOC] ## 功能簡述 nova服務是openstack云計算中的最核心服務。 **常用組件：** nova-api：接受并響應所有的計算服務請求，管理虛擬機(云主機)生命周期 nova-compute：真正管理虛擬機的生命周期（多個） nova-scheduler：nova調度器，挑選出最合適的nova-compute來創建虛機 nova-conductor：幫助nova-compute代理修改數據庫中虛擬機的狀態 ~~nova-network：早期openstack版本管理虛擬機的網絡（已棄用，neutron）~~ nova-consoleauth：為web版的vnc提供訪問令牌token novncproxy：web版 vnc客戶端 nova-api-metadata：接受來自虛擬機發送的元數據請求 **openstack服務通用步驟** 1. 數據庫創庫授權 2. 在keystone創建系統用戶關聯角色 3. 在keystone上創建服務，注冊api 4. 安裝相應服務軟件包 5. 修改相應服務的配置文件 6. 同步數據庫 7. 啟動服務 ## 服務部署-控制節點 [官方部署文檔參考](https://docs.openstack.org/mitaka/zh_CN/install-guide-rdo/nova.html) ### a：數據庫創庫授權 ```sh CREATE DATABASE nova_api; CREATE DATABASE nova; GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS'; GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS'; GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'NOVA_DBPASS'; GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' IDENTIFIED BY 'NOVA_DBPASS'; ``` ### b：在keystone創建系統用戶關聯角色 ```sh openstack user create --domain default --password NOVA_PASS nova openstack role add --project service --user nova admin ``` ### c：在keystone上創建服務和注冊api ```sh openstack service create --name nova --description "OpenStack Compute" compute openstack endpoint create --region RegionOne compute public http://controller:8774/v2.1/%\(tenant_id\)s openstack endpoint create --region RegionOne compute internal http://controller:8774/v2.1/%\(tenant_id\)s openstack endpoint create --region RegionOne compute admin http://controller:8774/v2.1/%\(tenant_id\)s ``` ### d：安裝服務相應軟件包 ```sh yum install openstack-nova-api openstack-nova-conductor \ openstack-nova-console openstack-nova-novncproxy \ openstack-nova-scheduler -y ``` ### e：修改相應服務的配置文件 **備份nova配置** ```sh cp /etc/nova/nova.conf{,.bak} grep '^[a-Z\[]' /etc/nova/nova.conf.bak >/etc/nova/nova.conf my_ip=$(ip addr show dev eth0|awk -F"[ |/]+" 'NR==3 {print $3'}) ``` **非交互式配置nova** ```sh openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata openstack-config --set /etc/nova/nova.conf DEFAULT rpc_backend rabbit openstack-config --set /etc/nova/nova.conf DEFAULT auth_strategy keystone openstack-config --set /etc/nova/nova.conf DEFAULT my_ip $my_ip openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron True openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver openstack-config --set /etc/nova/nova.conf api_database connection mysql+pymysql://nova:NOVA_DBPASS@controller/nova_api openstack-config --set /etc/nova/nova.conf database connection mysql+pymysql://nova:NOVA_DBPASS@controller/nova openstack-config --set /etc/nova/nova.conf glance api_servers http://controller:9292 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_uri http://controller:5000 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://controller:35357 openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers controller:11211 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name default openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name default openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp openstack-config --set /etc/nova/nova.conf oslo_messaging_rabbit rabbit_host controller openstack-config --set /etc/nova/nova.conf oslo_messaging_rabbit rabbit_userid openstack openstack-config --set /etc/nova/nova.conf oslo_messaging_rabbit rabbit_password RABBIT_PASS openstack-config --set /etc/nova/nova.conf vnc vncserver_listen '$my_ip' openstack-config --set /etc/nova/nova.conf vnc vncserver_proxyclient_address '$my_ip' ``` **校驗** ```sh [root@controller ~]# md5sum /etc/nova/nova.conf 47ded61fdd1a79ab91bdb37ce59ef192 /etc/nova/nova.conf ``` ### f：同步數據庫 ```sh su -s /bin/sh -c "nova-manage api_db sync" nova su -s /bin/sh -c "nova-manage db sync" nova ``` ### g：啟動服務 ```sh 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 # 驗證 openstack compute service list ``` ## 服務部署-計算節點： nova-compute需要調用libvirtd來創建虛擬機,需要再計算節點上安裝配置nova-compute 如果需要讓控制節點也能夠兼做計算節點,那控制節點上也要做一下操作 ### 安裝軟件 ```sh yum install openstack-nova-compute -y yum install openstack-utils.noarch -y ``` ### 配置nova **備份配置** ```sh cp /etc/nova/nova.conf{,.bak} grep '^[a-Z\[]' /etc/nova/nova.conf.bak >/etc/nova/nova.conf my_ip=$(ip addr show dev eth0|awk -F"[ |/]+" 'NR==3 {print $3'}) ``` 非交互式配置nova ```sh openstack-config --set /etc/nova/nova.conf DEFAULT enabled_apis osapi_compute,metadata openstack-config --set /etc/nova/nova.conf DEFAULT rpc_backend rabbit openstack-config --set /etc/nova/nova.conf DEFAULT auth_strategy keystone openstack-config --set /etc/nova/nova.conf DEFAULT my_ip $my_ip openstack-config --set /etc/nova/nova.conf DEFAULT use_neutron True openstack-config --set /etc/nova/nova.conf DEFAULT firewall_driver nova.virt.firewall.NoopFirewallDriver openstack-config --set /etc/nova/nova.conf glance api_servers http://controller:9292 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_uri http://controller:5000 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_url http://controller:35357 openstack-config --set /etc/nova/nova.conf keystone_authtoken memcached_servers controller:11211 openstack-config --set /etc/nova/nova.conf keystone_authtoken auth_type password openstack-config --set /etc/nova/nova.conf keystone_authtoken project_domain_name default openstack-config --set /etc/nova/nova.conf keystone_authtoken user_domain_name default openstack-config --set /etc/nova/nova.conf keystone_authtoken project_name service openstack-config --set /etc/nova/nova.conf keystone_authtoken username nova openstack-config --set /etc/nova/nova.conf keystone_authtoken password NOVA_PASS openstack-config --set /etc/nova/nova.conf oslo_concurrency lock_path /var/lib/nova/tmp openstack-config --set /etc/nova/nova.conf oslo_messaging_rabbit rabbit_host controller openstack-config --set /etc/nova/nova.conf oslo_messaging_rabbit rabbit_userid openstack openstack-config --set /etc/nova/nova.conf oslo_messaging_rabbit rabbit_password RABBIT_PASS openstack-config --set /etc/nova/nova.conf vnc enabled True openstack-config --set /etc/nova/nova.conf vnc vncserver_listen 0.0.0.0 openstack-config --set /etc/nova/nova.conf vnc vncserver_proxyclient_address '$my_ip' openstack-config --set /etc/nova/nova.conf vnc novncproxy_base_url http://controller:6080/vnc_auto.html openstack-config --set /etc/nova/nova.conf libvirt cpu_mode none openstack-config --set /etc/nova/nova.conf libvirt virt_type qemu ``` **校驗** ```sh md5sum /etc/nova/nova.conf 50a60d9106fe15f7197ddc3a5a4efbf3 /etc/nova/nova.conf ``` **啟動** ```sh systemctl enable libvirtd.service openstack-nova-compute.service systemctl start libvirtd.service openstack-nova-compute.service ``` ### 最終驗證： ```sh openstack compute service list ```