技术标签： openstack
创建Nova 数据库
[root@controller ~]# mysql -u root -psursen@2015
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 15
Server version: 10.1.20-MariaDB MariaDB Server
Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> CREATE DATABASE nova_api;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]> CREATE DATABASE nova;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]> CREATE DATABASE nova_cell0;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' \
-> IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' \
-> IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' \
-> IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' \
-> IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'localhost' \
-> IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova_cell0.* TO 'nova'@'%' \
-> IDENTIFIED BY 'NOVA_DBPASS';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> quit
Bye
设置认证
[root@controller ~]# . admin-openstack.sh
[root@controller ~]# openstack user create --domain default --password-prompt nova
User Password:
Repeat User Password:
+---------------------+----------------------------------+
| Field | Value |
+---------------------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | a90ecafee68047b7ba438df90150b56f |
| name | nova |
| options | {} |
| password_expires_at | None |
+---------------------+----------------------------------+
[root@controller ~]# openstack role add --project service --user nova admin
[root@controller ~]# openstack service create --name nova \
> --description "OpenStack Compute" compute
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | OpenStack Compute |
| enabled | True |
| id | e2d39ba9300c4da8bd5de2ee85100123 |
| name | nova |
| type | compute |
+-------------+----------------------------------+
[root@controller ~]# openstack endpoint create --region RegionOne \
> compute public http://controller:8774/v2.1
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 6452ea7f32944f74815accbfc00ace88 |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | e2d39ba9300c4da8bd5de2ee85100123 |
| service_name | nova |
| service_type | compute |
| url | http://controller:8774/v2.1 |
+--------------+----------------------------------+
[root@controller ~]#
[root@controller ~]# openstack endpoint create --region RegionOne \
> compute internal http://controller:8774/v2.1
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 98387b877ca14d5b9f56fac2cfe66453 |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | e2d39ba9300c4da8bd5de2ee85100123 |
| service_name | nova |
| service_type | compute |
| url | http://controller:8774/v2.1 |
+--------------+----------------------------------+
[root@controller ~]# openstack endpoint create --region RegionOne \
> compute admin http://controller:8774/v2.1
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 9eb940ba738a4f8eb8893c083e234810 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | e2d39ba9300c4da8bd5de2ee85100123 |
| service_name | nova |
| service_type | compute |
| url | http://controller:8774/v2.1 |
+--------------+----------------------------------+
[root@controller ~]# openstack user create --domain default --password-prompt placement
User Password:
Repeat User Password:
+---------------------+----------------------------------+
| Field | Value |
+---------------------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | 267d9aaf42d547feab131dd9a3868df7 |
| name | placement |
| options | {} |
| password_expires_at | None |
+---------------------+----------------------------------+
[root@controller ~]# openstack role add --project service --user placement admin
[root@controller ~]# openstack service create --name placement --description "Placement API" placement
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | Placement API |
| enabled | True |
| id | a04baa56a74e48cca5d7ab01cae5e494 |
| name | placement |
| type | placement |
+-------------+----------------------------------+
[root@controller ~]# openstack endpoint create --region RegionOne placement public http://controller:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 7dc10eeab8764561b62505fb6865d056 |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | a04baa56a74e48cca5d7ab01cae5e494 |
| service_name | placement |
| service_type | placement |
| url | http://controller:8778 |
+--------------+----------------------------------+
[root@controller ~]# openstack endpoint create --region RegionOne placement internal http://controller:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 60cacf04d0424b40b1615243d829769c |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | a04baa56a74e48cca5d7ab01cae5e494 |
| service_name | placement |
| service_type | placement |
| url | http://controller:8778 |
+--------------+----------------------------------+
[root@controller ~]# openstack endpoint create --region RegionOne placement admin http://controller:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | dc3cff853ac8444e964b321cd26a50aa |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | a04baa56a74e48cca5d7ab01cae5e494 |
| service_name | placement |
| service_type | placement |
| url | http://controller:8778 |
+--------------+----------------------------------
安装nova 组件
[root@controller ~]# yum install openstack-nova-api openstack-nova-conductor \
> openstack-nova-console openstack-nova-novncproxy \
> openstack-nova-scheduler openstack-nova-placement-api -y
设置nova 配置
[root@controller ~]# cp /etc/nova/nova.conf{,.bak}
[root@controller ~]# vi /etc/nova/nova.conf
nova配置最终配置文件
[root@controller ~]# egrep -v '#|^$' /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:RABBIT_PASS@controller
my_ip = 10.10.6.11
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
auth_strategy = keystone
[api_database]
connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova_api
[barbican]
[cache]
[cells]
[cinder]
os_region_name = RegionOne
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[crypto]
[database]
connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://controller:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[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 = NOVA_PASS
[libvirt]
[matchmaker_redis]
[metrics]
[mks]
[neutron]
url = http://controller:9696
auth_url = http://controller:35357
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = NEUTRON_PASS
service_metadata_proxy = true
metadata_proxy_shared_secret = METADATA_SECRET
[notifications]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_messaging_zmq]
[oslo_middleware]
[oslo_policy]
[pci]
[placement]
os_region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller:35357/v3
username = placement
password = PLACEMENT_PASS
[quota]
[rdp]
[remote_debug]
[scheduler]
discover_hosts_in_cells_interval = 300
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = true
vncserver_listen = $my_ip
vncserver_proxyclient_address = $my_ip
[workarounds]
[wsgi]
[xenserver]
[xvp]
在 /etc/httpd/conf.d/00-nova-placement-api.conf 最后添加以下文件
vi /etc/httpd/conf.d/00-nova-placement-api.conf
<Directory /usr/bin>
<IfVersion >= 2.4>
Require all granted
</IfVersion>
<IfVersion < 2.4>
Order allow,deny
Allow from all
</IfVersion>
</Directory>
[root@controller ~]# systemctl restart httpd
同步数据库
[root@controller ~]# su -s /bin/sh -c "nova-manage api_db sync" nova
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
67b11791-c457-46a7-93be-16384afba937
[root@controller ~]# su -s /bin/sh -c "nova-manage db sync" nova
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
/usr/lib/python2.7/site-packages/pymysql/cursors.py:166: Warning: (1831, u'Duplicate index `block_device_mapping_instance_uuid_virtual_name_device_name_idx`. This is deprecated and will be disallowed in a future release.')
result = self._query(query)
/usr/lib/python2.7/site-packages/pymysql/cursors.py:166: Warning: (1831, u'Duplicate index `uniq_instances0uuid`. This is deprecated and will be disallowed in a future release.')
result = self._query(query)
确认nova cell0 和cell1 注册成功
[root@controller ~]# nova-manage cell_v2 list_cells
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
+-------+--------------------------------------+------------------------------------+-------------------------------------------------+
| Name | UUID | Transport URL | Database Connection |
+-------+--------------------------------------+------------------------------------+-------------------------------------------------+
| cell0 | 00000000-0000-0000-0000-000000000000 | none:/ | mysql+pymysql://nova:****@controller/nova_cell0 |
| cell1 | 67b11791-c457-46a7-93be-16384afba937 | rabbit://openstack:****@controller | mysql+pymysql://nova:****@controller/nova |
+-------+--------------------------------------+------------------------------------+-------------------------------------------------+
启动服务
[root@controller ~]# systemctl enable openstack-nova-api.service \
> openstack-nova-consoleauth.service openstack-nova-scheduler.service \
> openstack-nova-conductor.service openstack-nova-novncproxy.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-api.service to /usr/lib/systemd/system/openstack-nova-api.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-consoleauth.service to /usr/lib/systemd/system/openstack-nova-consoleauth.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-scheduler.service to /usr/lib/systemd/system/openstack-nova-scheduler.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-conductor.service to /usr/lib/systemd/system/openstack-nova-conductor.service.
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-novncproxy.service to /usr/lib/systemd/system/openstack-nova-novncproxy.service.
[root@controller ~]# systemctl start openstack-nova-api.service openstack-nova-consoleauth.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
Nova 节点：Compute12 上设置
[root@controller ~]# ssh 10.10.6.12
安装软件
[root@compute12 ~]# yum install openstack-nova-compute -y
Complete!
[root@compute12 ~]# cp /etc/nova/nova.conf{,.bak}
因在kvm上安装，所以libvirtd 设置为virt_type = qemu 需要注意
[root@compute12 ~]# egrep -c '(vmx|svm)' /proc/cpuinfo
0
[root@compute12 ~]# vi /etc/nova/nova.conf
设置nova 配置文件最终完整版如下
[root@compute12 ~]# egrep -v '#|^$' /etc/nova/nova.conf
[DEFAULT]
enabled_apis = osapi_compute,metadata
transport_url = rabbit://openstack:RABBIT_PASS@controller
my_ip = 10.10.6.12
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
auth_strategy = keystone
[api_database]
[barbican]
[cache]
[cells]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[crypto]
[database]
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://controller:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[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 = NOVA_PASS
[libvirt]
virt_type = qemu
[matchmaker_redis]
[metrics]
[mks]
[neutron]
url = http://controller:9696
auth_url = http://controller:35357
auth_type = password
project_domain_name = default
user_domain_name = default
region_name = RegionOne
project_name = service
username = neutron
password = NEUTRON_PASS
[notifications]
[osapi_v21]
[oslo_concurrency]
lock_path = /var/lib/nova/tmp
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_messaging_zmq]
[oslo_middleware]
[oslo_policy]
[pci]
[placement]
os_region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller:35357/v3
username = placement
password = PLACEMENT_PASS
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = True
vncserver_listen = 0.0.0.0
vncserver_proxyclient_address = $my_ip
novncproxy_base_url = http://10.10.6.11:6080/vnc_auto.html
[workarounds]
[wsgi]
[xenserver]
[xvp]
[root@compute12 ~]#
启动服务
[root@compute12 ~]# systemctl enable libvirtd.service openstack-nova-compute.service
Created symlink from /etc/systemd/system/multi-user.target.wants/openstack-nova-compute.service to /usr/lib/systemd/system/openstack-nova-compute.service.
[root@compute12 ~]# systemctl start libvirtd.service openstack-nova-compute.service
在控制节点上确认 安装是否成功
[root@controller ~]# . admin-openstack.sh
[root@controller ~]# openstack compute service list --service nova-compute
+----+--------------+-----------+------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+--------------+-----------+------+---------+-------+----------------------------+
| 9 | nova-compute | compute12 | nova | enabled | up | 2018-03-27T02:19:19.000000 |
+----+--------------+-----------+------+---------+-------+----------------------------+
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
Found 2 cell mappings.
Skipping cell0 since it does not contain hosts.
Getting compute nodes from cell 'cell1': 67b11791-c457-46a7-93be-16384afba937
Found 0 unmapped computes in cell: 67b11791-c457-46a7-93be-16384afba937
[root@controller ~]#
[root@controller ~]# openstack compute service list
+----+------------------+------------+----------+---------+-------+----------------------------+
| ID | Binary | Host | Zone | Status | State | Updated At |
+----+------------------+------------+----------+---------+-------+----------------------------+
| 1 | nova-conductor | controller | internal | enabled | up | 2018-03-27T02:20:05.000000 |
| 3 | nova-consoleauth | controller | internal | enabled | up | 2018-03-27T02:20:06.000000 |
| 4 | nova-scheduler | controller | internal | enabled | up | 2018-03-27T02:20:06.000000 |
| 9 | nova-compute | compute12 | nova | enabled | up | 2018-03-27T02:20:09.000000 |
+----+------------------+------------+----------+---------+-------+----------------------------+
[root@controller ~]# openstack catalog list
+-----------+-----------+-----------------------------------------+
| Name | Type | Endpoints |
+-----------+-----------+-----------------------------------------+
| glance | image | |
| keystone | identity | RegionOne |
| | | public: http://controller:5000/v3/ |
| | | RegionOne |
| | | admin: http://controller:35357/v3/ |
| | | RegionOne |
| | | internal: http://controller:5000/v3/ |
| | | |
| placement | placement | RegionOne |
| | | internal: http://controller:8778 |
| | | RegionOne |
| | | public: http://controller:8778 |
| | | RegionOne |
| | | admin: http://controller:8778 |
| | | |
| glance | image | RegionOne |
| | | admin: http://controller:9292 |
| | | RegionOne |
| | | internal: http://controller:9292 |
| | | RegionOne |
| | | public: http://controller:9292 |
| | | |
| nova | compute | RegionOne |
| | | public: http://controller:8774/v2.1 |
| | | RegionOne |
| | | internal: http://controller:8774/v2.1 |
| | | RegionOne |
| | | admin: http://controller:8774/v2.1 |
| | | |
+-----------+-----------+-----------------------------------------+
[root@controller ~]# openstack image list
+--------------------------------------+--------+--------+
| ID | Name | Status |
+--------------------------------------+--------+--------+
| 188515c1-c203-46d3-b2a1-88cbb8a70a44 | cirros | active |
+--------------------------------------+--------+--------+
[root@controller ~]# nova-status upgrade check
/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py:332: NotSupportedWarning: Configuration option(s) ['use_tpool'] not supported
exception.NotSupportedWarning
Option "os_region_name" from group "placement" is deprecated. Use option "region-name" from group "placement".
+------------------------------------------------------------------+
| Upgrade Check Results |
+------------------------------------------------------------------+
| Check: Cells v2 |
| Result: Failure |
| Details: No host mappings found but there are compute nodes. Run |
| command 'nova-manage cell_v2 simple_cell_setup' and then |
| retry. |
+------------------------------------------------------------------+
| Check: Placement API |
| Result: Success |
| Details: None |
+------------------------------------------------------------------+
| Check: Resource Providers |
| Result: Success |
| Details: None |
+------------------------------------------------------------------+
本文参考地址：https://docs.openstack.org/nova/pike/install/controller-install-rdo.html
文章浏览阅读3.2k次。本文研究全球与中国市场分布式光纤传感器的发展现状及未来发展趋势，分别从生产和消费的角度分析分布式光纤传感器的主要生产地区、主要消费地区以及主要的生产商。重点分析全球与中国市场的主要厂商产品特点、产品规格、不同规格产品的价格、产量、产值及全球和中国市场主要生产商的市场份额。主要生产商包括：FISO TechnologiesBrugg KabelSensor HighwayOmnisensAFL GlobalQinetiQ GroupLockheed MartinOSENSA Innovati_预计2026年中国分布式传感器市场规模有多大
文章浏览阅读1.1k次，点赞2次，收藏12次。常用组合逻辑电路结构——为IC设计的延时估计铺垫学习目的：估计模块间的delay，确保写的代码的timing 综合能给到多少HZ，以满足需求！_基4布斯算法代码
文章浏览阅读3.3k次，点赞3次，收藏5次。OpenAI Manager助手（基于SpringBoot和Vue）_chatgpt网页版
文章浏览阅读2.2k次。USACO自1992年举办，到目前为止已经举办了27届，目的是为了帮助美国信息学国家队选拔IOI的队员，目前逐渐发展为全球热门的线上赛事，成为美国大学申请条件下，含金量相当高的官方竞赛。USACO的比赛成绩可以助力计算机专业留学，越来越多的学生进入了康奈尔，麻省理工，普林斯顿，哈佛和耶鲁等大学，这些同学的共同点是他们都参加了美国计算机科学竞赛（USACO)，并且取得过非常好的成绩。适合参赛人群USACO适合国内在读学生有意向申请美国大学的或者想锻炼自己编程能力的同学，高三学生也可以参加12月的第_usaco可以多次提交吗
文章浏览阅读394次。1.1 存储程序1.2 创建存储过程1.3 创建自定义函数1.3.1 示例1.4 自定义函数和存储过程的区别1.5 变量的使用1.6 定义条件和处理程序1.6.1 定义条件1.6.1.1 示例1.6.2 定义处理程序1.6.2.1 示例1.7 光标的使用1.7.1 声明光标1.7.2 打开光标1.7.3 使用光标1.7.4 关闭光标1.8 流程控制的使用1.8.1 IF语句1.8.2 CASE语句1.8.3 LOOP语句1.8.4 LEAVE语句1.8.5 ITERATE语句1.8.6 REPEAT语句。_mysql自定义函数和存储过程
文章浏览阅读188次。半导体二极管——集成电路最小组成单元。_本征半导体电流为0
文章浏览阅读2.8k次，点赞3次，收藏18次。游戏水面特效实现方式太多。咱们这边介绍的是一最简单的UV动画（无顶点位移），整个mesh由4个顶点构成。实现了水面效果（左图），不动代码稍微修改下参数和贴图可以实现岩浆效果（右图）。有要思路是1，uv按时间去做正弦波移动2，在1的基础上加个凹凸图混合uv3，在1、2的基础上加个水流方向4，加上对雾效的支持，如没必要请自行删除雾效代码(把包含fog的几行代码删除)S..._unity 岩浆shader
文章浏览阅读5k次。广义线性模型是线性模型的扩展，它通过连接函数建立响应变量的数学期望值与线性组合的预测变量之间的关系。广义线性模型拟合的形式为：其中g(μY)是条件均值的函数（称为连接函数）。另外，你可放松Y为正态分布的假设，改为Y 服从指数分布族中的一种分布即可。设定好连接函数和概率分布后，便可以通过最大似然估计的多次迭代推导出各参数值。在大部分情况下，线性模型就可以通过一系列连续型或类别型预测变量来预测正态分布的响应变量的工作。但是，有时候我们要进行非正态因变量的分析，例如：（1）类别型.._广义线性回归模型
文章浏览阅读69次。环境保护、 保护地球、 校园环保、垃圾分类、绿色家园、等网站的设计与制作。 总结了一些学生网页制作的经验：一般的网页需要融入以下知识点：div+css布局、浮动、定位、高级css、表格、表单及验证、js轮播图、音频 视频 Flash的应用、ul li、下拉导航栏、鼠标划过效果等知识点，网页的风格主题也很全面：如爱好、风景、校园、美食、动漫、游戏、咖啡、音乐、家乡、电影、名人、商城以及个人主页等主题，学生、新手可参考下方页面的布局和设计和HTML源码（有用点赞△） 一套A+的网_垃圾分类网页设计目标怎么写
文章浏览阅读614次，点赞7次，收藏11次。之前找到一个修改 exe 中 DLL地址 的方法, 不太好使,虽然能正确启动, 但无法改变 exe 的工作目录,这就影响了.Net 中很多获取 exe 执行目录来拼接的地址 ( 相对路径 ),比如 wwwroot 和 代码中相对目录还有一些复制到目录的普通文件 等等,它们的地址都会指向原来 exe 的目录, 而不是自定义的 “lib” 目录,根本原因就是没有修改 exe 的工作目录这次来搞一个启动程序,把 .net 的所有东西都放在一个文件夹,在文件夹同级的目录制作一个 exe._.net dll 全局目录
文章浏览阅读1.5k次。本文为转载，原博客地址：http://blog.csdn.net/hujingshuang/article/details/46910259简介 BRIEF是2010年的一篇名为《BRIEF:Binary Robust Independent Elementary Features》的文章中提出，BRIEF是对已检测到的特征点进行描述，它是一种二进制编码的描述子，摈弃了利用区域灰度..._breif description calculation 特征点
文章浏览阅读4.1k次，点赞21次，收藏79次。本文是《基于SpringBoot的房屋租赁管理系统》的配套原创说明文档，可以给应届毕业生提供格式撰写参考，也可以给开发类似系统的朋友们提供功能业务设计思路。_基于spring boot的房屋租赁系统论文