企业自建私有云-openstack-Nova计算服务(控制节点)

发布时间:2024-07-05 19:01

  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:NOVA_CXK_DBPASS@192.168.188.29/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:NOVA_CXK_DBPASS@192.168.188.29/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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