ubuntu 16.04 上安装OpenStack Mitaka （all-in-one）：Nova 安装与配置

      
本文介绍在ubuntu 16.04下单点安装Mitaka Nova的过程

       步骤1：root身份进入mysql，创建两个数据库

                     CREATE DATABASE nova_api;

                     CREATE DATABASE nova;

       步骤2：依然在数据库中，创建nova用户并赋予权限，下面命令中自行设置一致的NOVA_DBPASS值，之后退出mysql

                      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';

       步骤3：运行脚本. admin-openrc以保证接下来以admin身份运行命令

       步骤4：创建nova用户：openstack user create --domain default --password-prompt nova

       步骤5：nova用户赋予对service project的admin权限：openstack role add --project service --user nova admin

       步骤6：创建nova服务：openstack service create --name nova --description "OpenStack Compute" compute

       步骤7：国际惯例，为nova服务创建三个API URL，这三个URL仅类型不同

                     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
       步骤8：安装nova服务所有安装包

                     apt-get install nova-api nova-conductor nova-consoleauth nova-novncproxy nova-scheduler

       步骤9：编辑或创建文件 /etc/nova/nova.conf，在我机器上是没有这个文件的，得自行创建，添加或修改内容如下

                     [DEFAULT]

                      enabled_apis = osapi_compute,metadata

                      rpc_backend = rabbit

                      auth_strategy = keystone

                      my_ip = 192.168.1.110 #enp3s0的IP地址

                      use_neutron = True

                      firewall_driver = nova.virt.firewall.NoopFirewallDriver

                     #logdir=/var/log/nova 一定要将这个注释掉

                     [api_database]

                     connection = mysql+pymysql://nova:YOURPASSWORD@controller/nova_api

                     [database]

                     connection = mysql+pymysql://nova:YOURPASSWORD@controller/nova

                     [oslo_messaging_rabbit]

                     rabbit_host = controller

                     rabbit_userid = openstack

                     rabbit_password = YOURPASSWORD #环境配置时安装rabbitmq时创建的openstack用户名密码

                    

                     [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 = YOURPASSWORD

                     [vnc]

                     vncserver_listen = $my_ip

                     vncserver_proxyclient_address = $my_ip

                     [oslo_concurrency]

                     lock_path = /var/lib/nova/tmp

   

       步骤10：同步数据库

                       su -s /bin/sh -c "nova-manage api_db sync" nova

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

       步骤11：重启服务

                       service nova-api restart

                       service nova-consoleauth restart

                       service nova-scheduler restart

                       service nova-conductor restart

                       service nova-novncproxy restart

       步骤12：如果是分布式安装，安装官网文档，对另一台作为compute节点的机器再进行一系列配置。但是单节点安装中，直接在controller所在机器继续进行compute节点配置。

                       安装：apt-get install nova-compute

       步骤13：再次打开/etc/nova/nova.conf进行修改

                       官网安装文档中，compute节点nova.conf文件中的[vnc]段落内容如下

                       [vnc]

                       enabled = True

                       vncserver_listen = 0.0.0.0

                       vncserver_proxyclient_address = $my_ip

                       novncproxy_base_url = http://controller:6080/vnc_auto.html
                       而在刚才步骤9中，我们将[vnc]写成这样

                      [vnc]

                       vncserver_listen = $my_ip

                       vncserver_proxyclient_address = $my_ip

                       可以看到，两个配置中vncserver_listen值不一样，于是我最终将[vnc]写成了这样：

                       [vnc]

                       #vncserver_listen = $my_ip

                       vncserver_proxyclient_address = $my_ip

                       enabled = True

                       vncserver_listen = 0.0.0.0

                       vncserver_proxyclient_address = $my_ip

                       novncproxy_base_url = http://controller:6080/vnc_auto.html
                       继续，添加glance段落

                       [glance]

                       api_servers = http://controller:9292
       步骤14：测试机器能否支持虚拟机硬件加速，运行命令egrep -c '(vmx|svm)' /proc/cpuinfo，返回值大于0则什么也不做，反之，在/etc/nova/nova-compute.conf文件的[libvirt]中设置virt_type = qemu；

       步骤15：重启服务 service nova-compute restart

       步骤16：验证一下，admin用户身份运行 openstack compute service list，显示如下信息。注意，zopen是我controller所在主机的hostname。因为是单点安装，下面四个服务都显示运行在zopen Host上。