企业自建私有云-openstack-Nova计算服务(控制节点)

1. 数据库创库授权

   #创建nova数据库：
   CREATE DATABASE nova_api;
   CREATE DATABASE nova;
   create database nova_cell0;
   
   #授予恰当的权限	
   grant all privileges on nova_api.* to 'nova'@'localhost' 				identified by 'NOVA_CXK_DBPASS'; 
   grant all privileges on nova_api.* to 'nova'@'%' 						identified by 'NOVA_CXK_DBPASS'; 
   
   grant all privileges on nova.* to 'nova'@'localhost' 					identified by 'NOVA_CXK_DBPASS'; 
   grant all privileges on nova.* to 'nova'@'%' 							identified by 'NOVA_CXK_DBPASS'; 
   
   grant all privileges on nova_cell0.* to 'nova'@'localhost' 			identified by 'NOVA_CXK_DBPASS'; 
   grant all privileges on nova_cell0.* to 'nova'@'%' 					identified by 'NOVA_CXK_DBPASS'; 
   flush privileges;
   

2. 在keystone创建Nova用户，授权关联角色在任意一个控制节点上

   source /sh/admin-openstack.sh
   #创建用户
   #创建nova用户
   openstack user create --domain default --password NOVA_CXK_PASS nova 
   
   #关联
   在service 项目（租户）上，给nova 用户赋予admin角色
   openstack role add --project service --user nova admin
   
   #查看
   openstack role  assignment list
   

3. 在keystone创建服务，注册api在任意一个控制节点上

   #创建nova服务实体
   openstack service create --name nova --description "OpenStack Compute" compute
   
   #创建Nova服务API端点
   openstack endpoint create --region RegionOne  compute public http://vip:8774/v2.1
   openstack endpoint create --region RegionOne  compute internal http://vip:8774/v2.1
   openstack endpoint create --region RegionOne  compute admin http://vip:8774/v2.1
   

4. 安装服务相关的软件包(控制节点)

   yum install -y openstack-nova-api openstack-nova-conductor openstack-nova-novncproxy openstack-nova-scheduler openstack-utils python-openstackclient  python2-PyMySQL python-memcached
   

5. 修改配置文件(控制节点)

   判断计算节点是否支持虚拟机的硬件加速
   egrep -c '(vmx|svm)' /proc/cpuinfo
   #如果此命令返回值不是0，则计算节点支持硬件加速
   #如果此命令返回值是0，则计算节点不支持硬件加速
   

   #备份配置文件
   cp -a /etc/nova/nova.conf{,.bak}
   grep -Ev '^$|#' /etc/nova/nova.conf.bak > /etc/nova/nova.conf
   

   vi /etc/nova/nova.conf
   [DEFAULT]
   #nova-compute在并发创建虚拟机过程中，有并发任务限制
   max_concurrent_builds = 10　
   #物理 CPU 超售比例，默认是 16 倍，超线程也算作一个物理 CPU，需要根据具体负载和物理 CPU 能力进行综合判断后确定具体的配置
   cpu_allocation_ratio = 4.0
   initial_cpu_allocation_ratio = 16.0 
   #内存分配超售比例，默认是 1.5 倍，生产环境不建议开启超售。
   ram_allocation_ratio = 1.0 
   initial_ram_allocation_ratio = 1.5
   #内存预留量，这部分内存不能被虚拟机使用
   reserved_host_memory_mb = 4096 
   #磁盘预留空间，这部分空间不能被虚拟机使用
   reserved_host_disk_mb = 10240 
   #服务下线时间阈值，默认60，如果一个节点上的 nova 服务超过这个时间没有上报心跳到数据库，api 服务会认为该服务已经下线，如果配置过短或过长，都会导致误判。
   service_down_time = 120 
   my_ip = 管理网卡ip
   #rootwrap daemon方式运行命令，缩短nova/neutron等组件调用系统命令的时间
   use_rootwrap_daemon = True
   transport_url = rabbit://openstack:RABBIT_CXK_PASS@openstack-controller01:5672,openstack:RABBIT_CXK_PASS@openstack-controller02:5672,openstack:RABBIT_CXK_PASS@openstack-controller03:5672
   #启用对网络服务的支持
   use_neutron = true
   firewall_driver = nova.virt.firewall.NoopFirewallDriver
   #仅启用计算和元数据 API
   enabled_apis = osapi_compute,metadata
   metadata_host = $my_ip
   metadata_listen_port = 8775
   metadata_listen= 0.0.0.0
   metadata_cache_expiration= 15
   osapi_compute_listen = $my_ip
   osapi_compute_listen_port = 8774
   log_dir = /var/log/nova
   #有时候碰到硬盘太大，会失败,vif超时参数
   vif_plugging_timeout = 0
   vif_plugging_is_fatal = false
   debug=true
   
   [api]
   auth_strategy = keystone
   
   [api_database]
   connection = mysql+pymysql://nova:[email protected]/nova_api
   
   [cache]
   backend = oslo_cache.memcache_pool
   enabled = True
   cache = memcache_servers 
   memcache_servers = openstackcontroller1ip:11211,openstackcontroller2ip:11211,openstackcontroller3ip:11211
   
   [database]
   connection = mysql+pymysql://nova:[email protected]/nova
   
   [filter_scheduler]
   #主机组配置
   #关联：实例创建在同一个计算节点上，当该计算节点资源不够就会失败。
   #不关联：实例创建在不同计算节点上，当计算节点数不够时失败。
   #软关联：实例尽量创建在同一个计算节点上，当计算节点资源不够不会失败，会落在另一个计算节点上
   #软不关联：实例尽量创建在不同计算节点上，当计算节点数量不够时，实力会落在同一个计算节点上
   vailable_filters=nova.scheduler.filters.all_filters
   enabled_filters=AvailabilityZoneFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,ServerGroupAntiAffinityFilter,ServerGroupAffinityFilter
   
   [glance]
   api_servers = http://vip:9292
   
   [keystone_authtoken]
   auth_url = http://vip:5000/v3
   cache = true
   token_cache_time = 3600
   memcached_servers = openstackcontroller1ip:11211,openstackcontroller2ip:11211,openstackcontroller3ip:11211
   auth_type = password
   project_domain_name = Default
   user_domain_name = Default
   project_name = service
   username = nova
   password = NOVA_CXK_PASS
   
   [oslo_concurrency]
   #配置锁路径
   lock_path = /var/lib/nova/tmp
   
   [placement]
   os_region_name = RegionOne
   project_domain_name = Default
   project_name = service
   auth_type = password
   user_domain_name = Default
   auth_url = http://vip:5000/v3
   username = placement
   password = PLACEMENT_CXK_PASS
   
   
   
   [scheduler]
   #间隔性注册新计算节点
   discover_hosts_in_cells_interval = 300
   
   [vnc]
   enabled = true
   server_listen = $my_ip
   server_proxyclient_address = $my_ip
   novncproxy_host = $my_ip
   novncproxy_port = 6080
   
   #支持网络，等待网络安装
   [neutron]
   url = http://vip:9696
   auth_url = http://vip:5000
   auth_type = password
   project_domain_name = default
   user_domain_name = default
   region_name = RegionOne
   project_name = service
   username = neutron
   password = NEUTRON_CXK_PASS
   #启用元数据代理和配置密钥
   service_metadata_proxy = true
   metadata_proxy_shared_secret = METADATA_SECRET
   
   #支持cinder块存储，等待块存储安装
   [cinder]
   os_region_name = RegionOne
   

6. 初始化数据在任意一个控制节点上

   #同步nova-api数据库
   su -s /bin/sh -c "nova-manage api_db sync" nova
   
   #注册cell0数据库
   su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
   
   #创建cell1原件
   su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 
   --verbose" nova
   9ecbb8b7-0235-4446-9d93-54db77d18dd5
   
   #同步nova数据库
   su -s /bin/sh -c "nova-manage db sync" nova
   
   #验证novacell0和cell1注册情况
   su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova
   
   #检测数据
   mysql -u nova -pNOVA_CXK_DBPASS -e "use nova_api;show tables;"
   mysql -u nova -pNOVA_CXK_DBPASS -e "use nova;show tables;" 
   mysql -u nova -pNOVA_CXK_DBPASS -e "use nova_cell0;show tables;" 
   

7. 启动服务(控制节点)

   systemctl start openstack-nova-api.service openstack-nova-scheduler.service	openstack-nova-conductor.service openstack-nova-novncproxy.service
   systemctl status openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
   systemctl enable openstack-nova-api.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
   

8. 验证在任意一个控制节点上

   #列出各服务控制组件，查看状态；
   openstack compute service list
   
   #展示api端点;
   openstack catalog list
   
   #检查cell与placement api；都为success为正常
   nova-status upgrade check
   

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