OpenStack install Nova(计算服务)
2020-09-02虚拟化90root126°c
A+ A-一、nova(计算服务)介绍
Nova是OpenStack云中的计算组织控制器。支持OpenStack云中实例（instances）生命周期的所有活动都由Nova处理。这样使得Nova成为一个负责管理计算资源、网络、认证、所需可扩展性的平台。但是，Nova自身并没有提供任何虚拟化能力，相反它使用libvirt API来与被支持的Hypervisors交互。Nova 通过一个与Amazon Web Services（AWS）EC2 API兼容的web services API来对外提供服务。
nova api： 负责介绍和响应外部请求. 支持OpenStack API，EC2API
nova cert：负责身份认证
nova Scheduler：用于云主机调度
nova Conductor：计算节点访问数据库的中间件
nova Consoleatuh：用于控制台的授权验证
nova Novncproxy：vnc代理
Nova scheduler模块在openstack中的作用是决策虚拟机创建在那个主机(计算节点)上。
决策一个虚拟机应该调度到某物理节点，需要分为两个步骤：
过滤(Fliter)
计算权值(Weight)
二、yum install nova(控制节点)
[[email protected] ~]# yum install -y openstack-nova-api openstack-nova-cert openstack-nova-conductor openstack-nova-console openstack-nova-novncproxy openstack-nova-scheduler python-novaclient #在控制节点安装
三、配置nova
3.1 设置数据库链接地址
[[email protected] ~]# vim /etc/nova/nova.confconnection=mysql://nova:[email protected]/nova [[email protected] ~]# nova-manage db sync #同步nova数据库[[email protected] ~]# mysql -h192.168.15.11 -unova -pnova -e"use nova;show tables"+--------------------------------------------+ | Tables_in_nova | +--------------------------------------------+ | agent_builds | | aggregate_hosts | | aggregate_metadata | | aggregates | | block_device_mapping | | bw_usage_cache | | cells | | certificates | | compute_nodes | | console_pools | | consoles | | dns_domains | | .................. | +--------------------------------------------+### 共108张表
3.2 设置nova链接RabbitMQ地址
[[email protected] ~]# vim /etc/nova/nova.confrpc_backend=rabbit rabbit_host=192.168.15.11 rabbit_port=5672 rabbit_use_ssl=falserabbit_userid=guest rabbit_password=guest
3.3 创建注册用户nova
[[email protected] ~]# keystone user-create --name=nova --pass=nova+----------+----------------------------------+ | Property | Value | +----------+----------------------------------+ | email | | | enabled | True | | id | 5dc27ec3e47d4dc98f8ba6c61aa7bdec | | name | nova | | username | nova | +----------+----------------------------------+ [[email protected] ~]# keystone user-role-add --user=nova --tenant=admin --role=admin
3.3 设置keystone相关配置
[[email protected] ~]# vim /etc/nova/nova.conf[keystone_authtoken] #keystone认证auth_host=192.168.15.11 auth_port=35357 auth_protocol=http auth_uri=http://192.168.15.11:5000 auth_version=v2.0 admin_user=nova admin_password=nova admin_tenant_name=admin #租户auth_strategy=keystone
3.5 设置vnc
[[email protected] ~]# vim /etc/nova/nova.confnovncproxy_base_url=http://192.168.15.11:6080/vnc_auto.html vncserver_listen=0.0.0.0 vncserver_proxyclient_address=192.168.15.11 vnc_enabled=truevnc_keymap=en-us my_ip=192.168.15.11 compute_driver=libvirt.LibvirtDriver
四、创建nova service 和 endpoint
[[email protected] ~]# source /root/keystone-admin[[email protected] ~]# keystone service-create --name=nova --type=compute+-------------+----------------------------------+ | Property | Value | +-------------+----------------------------------+ | description | | | enabled | True | | id | fa7da98bb9584e48801f0b8716eb762a | | name | nova | | type | compute | +-------------+----------------------------------+ [[email protected] ~]# keystone endpoint-create \> --service-id=fa7da98bb9584e48801f0b8716eb762a \ > --publicurl=http://192.168.15.11:8774/v2/%\(tenant_id\)s \ > --internalurl=http://192.168.15.11:8774/v2/%\(tenant_id\)s \ > --adminurl=http://192.168.15.11:8774/v2/%\(tenant_id\)s +-------------+--------------------------------------------+ | Property | Value | +-------------+--------------------------------------------+ | adminurl | http://192.168.15.11:8774/v2/%(tenant_id)s | | id | 4947486d54ed4bd2a0760bec321b9a34 | | internalurl | http://192.168.15.11:8774/v2/%(tenant_id)s | | publicurl | http://192.168.15.11:8774/v2/%(tenant_id)s | | region | regionOne | | service_id | fa7da98bb9584e48801f0b8716eb762a | +-------------+--------------------------------------------+ [[email protected] ~]# keystone service-list+----------------------------------+----------+----------+--------------------+ | id | name | type | description | +----------------------------------+----------+----------+--------------------+ | c0fe6a5ef1fb4bbeaf795ea7fef00748 | glance | image | | | e39a683d743340dea051005c3ae35046 | keystone | identity | Openstack Identity | | fa7da98bb9584e48801f0b8716eb762a | nova | compute | | +----------------------------------+----------+----------+--------------------+ [[email protected] ~]# keystone endpoint-list+----------------------------------+-----------+--------------------------------------------+--------------------------------------------+--------------------------------------------+----------------------------------+ | id | region | publicurl | internalurl | adminurl | service_id | +----------------------------------+-----------+--------------------------------------------+--------------------------------------------+--------------------------------------------+----------------------------------+ | 135732ad0fd34da79cbca5b8fe93b15f | regionOne | http://192.168.15.11:9292 | http://192.168.15.11:9292 | http://192.168.15.11:9292 | c0fe6a5ef1fb4bbeaf795ea7fef00748 | | 4947486d54ed4bd2a0760bec321b9a34 | regionOne | http://192.168.15.11:8774/v2/%(tenant_id)s | http://192.168.15.11:8774/v2/%(tenant_id)s | http://192.168.15.11:8774/v2/%(tenant_id)s | fa7da98bb9584e48801f0b8716eb762a | | 7b923b2e790b43ee8b5be99d5c8262d6 | regionOne | http://192.168.15.11:5000/v2.0 | http://192.168.15.11:5000/v2.0 | http://192.168.15.11:35357/v2.0 | e39a683d743340dea051005c3ae35046 | +----------------------------------+-----------+--------------------------------------------+--------------------------------------------+--------------------------------------------+----------------------------------+
五、启动nova
[[email protected] ~]# pip install websockify==0.5.1 #安装websockitf,否则novncproxy无法启动[[email protected] ~]# for i in {api,cert,conductor,console,consoleauth,novncproxy,scheduler};do chkconfig --add openstack-nova-$i;done #将服务加入到开启启动[[email protected] ~]# for i in {api,cert,conductor,console,consoleauth,novncproxy,scheduler};do chkconfig openstack-nova-$i on;done #开启自启动[[email protected] ~]# for i in {api,cert,conductor,console,consoleauth,novncproxy,scheduler};do service openstack-nova-$i start;done #启动nova服务
六、测试nova
[[email protected] src]# nova host-list+------------------+-------------+----------+ | host_name | service | zone | +------------------+-------------+----------+ | node1.90root.com | conductor | internal | | node1.90root.com | console | internal | | node1.90root.com | scheduler | internal | | node1.90root.com | cert | internal | | node1.90root.com | consoleauth | internal | +------------------+-------------+----------+ [[email protected] src]# nova flavor-list+----+-----------+-----------+------+-----------+------+-------+-------------+-----------+ | ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public | +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+ | 1 | m1.tiny | 512 | 1 | 0 | | 1 | 1.0 | True | | 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True | | 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True | | 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True | | 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True | +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+