OpenStack服务-Nova(控制节点)
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本章目录
1、概述
2、架构
3、安装配置控制节点
一、概述
使用OpenStack计算服务来托管和管理云计算系统。OpenStack计算服务是基础设施即服务(IaaS)系统的主要部分，模块主要由Python实现。
-
OpenStack计算组件请求OpenStack Identity服务进行认证；
-
请求OpenStack Image服务提供磁盘镜像；
-
为OpenStack dashboard提供用户与管理员接口。磁盘镜像访问限制在项目与用户上；
-
配额以每个项目进行设定（例如，每个项目下可以创建多少实例）。OpenStack组件可以在标准硬件上水平大规模扩展，并且下载磁盘镜像启动虚拟机实例。
二、架构
三、安装配置
1、创建数据库并授权
1、创建数据库：
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)]> CREATE DATABASE nova_api;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]> CREATE DATABASE placement;
Query OK, 1 row affected (0.00 sec)
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| glance |
| information_schema |
| keystone |
| mysql |
| nova |
| nova_api |
| nova_cell0 |
| performance_schema |
| placement |
+--------------------+
9 rows in set (0.00 sec)
2、授权：
MariaDB [(none)]> grant all on nova.* to ‘nova‘@‘localhost‘ identified by ‘nova‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on nova.* to ‘nova‘@‘%‘ identified by ‘nova‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on nova_api.* to ‘nova‘@‘localhost‘ identified by ‘nova‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on nova_api.* to ‘nova‘@‘%‘ identified by ‘nova‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on nova_cell0.* to ‘nova‘@‘%‘ identified by ‘nova‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on nova_cell0.* to ‘nova‘@‘localhost‘ identified by ‘nova‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on placement.* to ‘placement‘@‘localhost‘ identified by ‘placement‘;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> grant all on placement.* to ‘placement‘@‘%‘ identified by ‘placement‘;
Query OK, 0 rows affected (0.00 sec)
3、查看数据库：
[root@controller ~]# mysql -unova -pnova -e "show databases;"
+--------------------+
| Database |
+--------------------+
| information_schema |
| nova |
| nova_api |
| nova_cell0 |
+--------------------+
2、创建用户nova、关联角色
1、创建用户
[root@controller ~]# . admin-openrc
[root@controller ~]# openstack user create --domain default --password-prompt nova
User Password:nova
Repeat User Password:nova
+---------------------+----------------------------------+
| Field | Value |
+---------------------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | cec4534f7ef84ab788be4e8fcaeef156 |
| name | nova |
| options | {} |
| password_expires_at | None |
+---------------------+----------------------------------+
2、角色添加
[root@controller ~]# openstack role add --project service --user nova admin
3、在keystone上创建服务和注册api（服务目录）
nova的api端口是8774
1、创建nova服务（不能出现多个）
[root@controller ~]# openstack service #可以查看帮助
[root@controller ~]# openstack service create --name nova --description "OpenStack Compute" compute
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | OpenStack Compute |
| enabled | True |
| id | 654777c6bd1547bb839df4d2459eaf26 |
| name | nova |
| type | compute |
+-------------+----------------------------------+
2、创建注册api
[root@controller ~]# openstack endpoint create --region RegionOne compute public http://controller:8774/v2.1
+--------------+-------------------------------------------+
| Field | Value |
+--------------+-------------------------------------------+
| enabled | True |
| id | 3c1caa473bfe4390a11e7177894bcc7b |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 060d59eac51b4594815603d75a00aba2 |
| service_name | nova |
| service_type | compute |
| url | http://controller:8774/v2.1 |
+--------------+-------------------------------------------+
[root@controller ~]# openstack endpoint create --region RegionOne compute internal http://controller:8774/v2.1
+--------------+-------------------------------------------+
| Field | Value |
+--------------+-------------------------------------------+
| enabled | True |
| id | e3c918de680746a586eac1f2d9bc10ab |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 060d59eac51b4594815603d75a00aba2 |
| 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 | 38f7af91666a47cfb97b4dc790b94424 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 060d59eac51b4594815603d75a00aba2 |
| service_name | nova |
| service_type | compute |
| url | http://controller:8774/v2.1 |
+--------------+-------------------------------------------+
4、创建placement相关
4.1创建placement用户
1、创建placement用户
[root@controller ~]# openstack user create --domain default --password-prompt placement
User Password: placement
Repeat User Password:placement
+---------------------+----------------------------------+
| Field | Value |
+---------------------+----------------------------------+
| domain_id | default |
| enabled | True |
| id | 842853f62c8d47b8bf7c0019f4de349d |
| name | placement |
| options | {} |
| password_expires_at | None |
+---------------------+----------------------------------+
2、添加角色
[root@controller ~]# openstack role add --project service --user placement admin
3、创建Placement API
[root@controller ~]# openstack service create --name placement --description "Placement API" placement
+-------------+----------------------------------+
| Field | Value |
+-------------+----------------------------------+
| description | Placement API |
| enabled | True |
| id | a62cb64d8e3f44f5b4665c18f87dae88 |
| name | placement |
| type | placement |
+-------------+----------------------------------+
4.2 创建api计算节点
[root@controller ~]#$ openstack endpoint create --region RegionOne placement public http://controller:8778
+--------------+----------------------------------+
| Field | Value |
+--------------+----------------------------------+
| enabled | True |
| id | 2b1b2637908b4137a9c2e0470487cbc0 |
| interface | public |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 2d1a27022e6e4185b86adac4444c495f |
| 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 | 02bcda9a150a4bd7993ff4879df971ab |
| interface | internal |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 2d1a27022e6e4185b86adac4444c495f |
| 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 | 3d71177b9e0f406f98cbff198d74b182 |
| interface | admin |
| region | RegionOne |
| region_id | RegionOne |
| service_id | 2d1a27022e6e4185b86adac4444c495f |
| service_name | placement |
| service_type | placement |
| url | http://controller:8778 |
+--------------+----------------------------------+
查看方法：
[root@controller ~]# openstack user list
+----------------------------------+-----------+
| ID | Name |
+----------------------------------+-----------+
| 31be40e20245472da1e5a6da135777f6 | glance |
| 842853f62c8d47b8bf7c0019f4de349d | placement |
| cec4534f7ef84ab788be4e8fcaeef156 | nova |
| e1011877fc5d4275b7e4394463883ee0 | myuser |
| ef761eff8f434c558b42ed37406dd217 | admin |
+----------------------------------+-----------+
[root@controller ~]# openstack service list
+----------------------------------+-----------+-----------+
| ID | Name | Type |
+----------------------------------+-----------+-----------+
| 654777c6bd1547bb839df4d2459eaf26 | nova | compute |
| a62cb64d8e3f44f5b4665c18f87dae88 | placement | placement |
| b9548ac6836c423e98ad347ce2fe22bf | keystone | identity |
| c287094b556c44b5b72438eccebd9726 | glance | image |
+----------------------------------+-----------+-----------+
[root@controller ~]# openstack endpoint list
+----------------------------------+-----------+--------------+--------------+---------+-----------+----------------------------------+
| ID | Region | Service Name | Service Type | Enabled | Interface | URL |
+----------------------------------+-----------+--------------+--------------+---------+-----------+----------------------------------+
........
5、安装nova
5.1、安装包：
[root@controller ~]# yum install openstack-nova-api openstack-nova-conductor openstack-nova-console openstack-nova-novncproxy openstack-nova-scheduler openstack-nova-placement-api
5.2 修改配置文件
vim /etc/nova/nova.conf
1）
[DEFAULT]
# ...
enabled_apis = osapi_compute,metadata
#表示启用两个api
2）
[api_database]
# ...
connection = mysql+pymysql://nova:nova@controller/nova_api
3）
[database]
# ...
connection = mysql+pymysql://nova:nova@controller/nova
4）
[placement_database]
# ...
connection = mysql+pymysql://placement:placement@controller/placement
5）
[DEFAULT]
# ...
3130行
transport_url = rabbit://openstack:openstack@controller
6）
[api]
# ...
auth_strategy = keystone
7）
[keystone_authtoken]
# ...
auth_url = http://controller:5000/v3
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = nova
8）暂时先不配置
[DEFAULT]
# ...
my_ip = 192.168.223.157
9）
[DEFAULT]
# ...
use_neutron = true #把neutron服务打开
firewall_driver = nova.virt.firewall.NoopFirewallDriver #关闭防火墙驱动
#默认情况下，计算服务使用的防火墙服务。由于网络服务包包含了防火墙服务，你必须使用#“nova.virt.firewall.NoopFirewallDriver”防火墙服务来禁用掉计算服务内置的防火墙服务，它是一个python类
10）
[vnc]
enabled = true
# ...
server_listen = $my_ip
server_proxyclient_address = $my_ip
11）
[glance]
# ...配置镜像下载地址
api_servers = http://controller:9292
12）配置锁路径
[oslo_concurrency]
# ...
lock_path = /var/lib/nova/tmp
#放置脚本重复执行
13）
[placement]
# ...
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller:5000/v3
username = placement
password = placement
添加新的计算节点时候加入如下内（直接添加到nova的配置文件中）：When you add new compute nodes, you must run nova-manage cell_v2 discover_hosts on the controller node to register those new compute nodes. Alternatively, you can set an appropriate interval in /etc/nova/nova.conf:
14）
[scheduler]
discover_hosts_in_cells_interval = 300
修改文件：
[root@controller ~]# cat /etc/nova/nova.conf
[DEFAULT]
enabled_apis=osapi_compute,metadata
transport_url = rabbit://openstack:openstack@controller
my_ip = 192.168.223.170
se_neutron = true
firewall_driver = nova.virt.firewall.NoopFirewallDriver
[api]
auth_strategy = keystone
[api_database]
connection = mysql+pymysql://nova:nova@controller/nova_api
[barbican]
[cache]
[cells]
[cinder]
[compute]
[conductor]
[console]
[consoleauth]
[cors]
[database]
connection = mysql+pymysql://nova:nova@controller/nova
[devices]
[ephemeral_storage_encryption]
[filter_scheduler]
[glance]
api_servers = http://controller:9292
[guestfs]
[healthcheck]
[hyperv]
[ironic]
[key_manager]
[keystone]
[keystone_authtoken]
auth_url = http://controller:5000/v3
memcached_servers = controller:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = nova
password = nova
[libvirt]
[matchmaker_redis]
[metrics]
[mks]
[neutron]
[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]
region_name = RegionOne
project_domain_name = Default
project_name = service
auth_type = password
user_domain_name = Default
auth_url = http://controller:5000/v3
username = placement
password = placement
[placement_database]
connection = mysql+pymysql://placement:placement@controller/placement
[powervm]
[profiler]
[quota]
[rdp]
[remote_debug]
[scheduler]
[serial_console]
[service_user]
[spice]
[upgrade_levels]
[vault]
[vendordata_dynamic_auth]
[vmware]
[vnc]
enabled = true
# ...
server_listen = $my_ip
server_proxyclient_address = $my_ip
[workarounds]
[wsgi]
[xenserver]
[xvp]
[zvm]
注释：
firewall_driver = nova.virt.firewall.NoopFirewallDriver
#默认情况下，计算服务使用的防火墙服务。由于网络服务包包含了防火墙服务，你必须使用#“nova.virt.firewall.NoopFirewallDriver”防火墙服务来禁用掉计算服务内置的防火墙服务，它是一个python类
#[root@controller ~]# cd /lib/python2.7/site-packages/nova/virt/
#[root@controller virt]# vim firewall.py
5.3 修改http配置文件
[root@controller ~]# vim /etc/httpd/conf.d/00-nova-placement-api.conf
<VirtualHost *:8778>
WSGIProcessGroup nova-placement-api
WSGIApplicationGroup %{GLOBAL}
WSGIPassAuthorization On
WSGIDaemonProcess nova-placement-api processes=3 threads=1 user=nova group=nova
WSGIScriptAlias / /usr/bin/nova-placement-api
<IfVersion >= 2.4>
ErrorLogFormat "%M"
</IfVersion>
ErrorLog /var/log/nova/nova-placement-api.log
#SSLEngine On
#SSLCertificateFile ...
#SSLCertificateKeyFile ...
<Directory /usr/bin>
<IfVersion >= 2.4>
Require all granted
</IfVersion>
<IfVersion < 2.4>
Order allow,deny
Allow from all
</IfVersion>
</Directory>
</VirtualHost>
[root@controller ~]# systemctl restart httpd
5.4 同步数据库：
[root@controller ~]# su -s /bin/sh -c "nova-manage api_db sync" nova
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 map_cell0" nova
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 create_cell --name=cell1 --verbose" nova
10d6dd1f-aa14-45d5-b6f9-f8e768fec97c
[root@controller ~]# su -s /bin/sh -c "nova-manage db sync" nova
/usr/lib/python2.7/site-packages/pymysql/cursors.py:170: 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:170: Warning: (1831, u‘Duplicate index `uniq_instances0uuid`. This is deprecated and will be disallowed in a future release.‘)
result = self._query(query)
[root@controller ~]# su -s /bin/sh -c "nova-manage db sync" nova
[root@controller ~]# su -s /bin/sh -c "nova-manage cell_v2 list_cells" nova
+-------+--------------------------------------+-----------------------------------------+------------------------------------------------------+----------+
| 名称 | UUID | Transport URL | 数据库连接 | Disabled |
+-------+--------------------------------------+-----------------------------------------+------------------------------------------------------+----------+
| cell0 | 00000000-0000-0000-0000-000000000000 | none:/ | mysql+pymysql://nova:****@controller/nova_cell0 | False |
| cell1 | 10d6dd1f-aa14-45d5-b6f9-f8e768fec97c | rabbit://openstack:****@controller | mysql+pymysql://nova:****@controller/nova | False |
+-------+--------------------------------------+-----------------------------------------+------------------------------------------------------+----------+
登录每个数据库检查表是否创建成功：
[root@controller ~]# mysql -unova -pnova
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| nova |
| nova_api |
| nova_cell0 |
+--------------------+
5 rows in set (0.00 sec)
[root@controller ~]# mysql -unova -pnova -e "use nova;show tables"
+--------------------------------------------+
| Tables_in_nova |
+--------------------------------------------+
| agent_builds |
...................................
When you add new compute nodes, you must run nova-manage cell_v2 discover_hosts on the controller node to register those new compute nodes. Alternatively, you can set an appropriate interval in /etc/nova/nova.conf:
[scheduler]
discover_hosts_in_cells_interval = 300
5.5 启动并检查服务状态：
1、启动服务
[root@controller ~]# systemctl enable openstack-nova-api.service openstack-nova-consoleauth openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
[root@controller ~]# systemctl start openstack-nova-api.service openstack-nova-consoleauth openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service
2、检查服务是否启动
验证：
[root@controller ~]# nova service-list （可以看到三个服务，启动nova-api就是提供此查询结果的服务，能查询，证明nova-api已经启动，如果stop就不能查询）
+--------------------------------------+------------------+------------+----------+---------+-------+----------------------------+-----------------+-------------+
| Id | Binary | Host | Zone | Status | State | Updated_at | Disabled Reason | Forced down |
+--------------------------------------+------------------+------------+----------+---------+-------+----------------------------+-----------------+-------------+
| aab81bd2-6b01-4825-83e2-e0a2571df5f0 | nova-consoleauth | controller | internal | enabled | up | 2020-02-22T09:17:02.000000 | - | False |
| 0056aea6-b275-4284-8db2-b98015867876 | nova-scheduler | controller | internal | enabled | up | 2020-02-22T09:16:52.000000 | - | False |
| ccd742e2-e33c-4501-a37d-01aa5084aed6 | nova-conductor | controller | internal | enabled | up | 2020-02-22T09:16:57.000000 | - | False |
+--------------------------------------+------------------+------------+----------+---------+-------+----------------------------+-----------------+-------------+
通过下边的验证openstack-nova-novncproxy是否启动
[root@controller ~]# netstat -tunlp|grep 6080
tcp 0 0 0.0.0.0:6080 0.0.0.0:* LISTEN 8981/python2
[root@controller ~]# ps -ef |grep 8981
nova 8981 1 0 10:25 ? 00:00:21 /usr/bin/python2 /usr/bin/nova-novncproxy --web /usr/share/novnc/
root 24789 13874 0 17:19 pts/1 00:00:00 grep --color=auto 8981
web界面的VNC：http://192.168.223.170:6080/
6、日志存在位置
[root@controller ~]# ll /var/log/nova/
总用量 124
-rw-r--r-- 1 nova nova 3786 12月 15 22:05 nova-api.log
-rw-r--r-- 1 nova nova 1432 12月 15 22:05 nova-conductor.log
-rw-r--r-- 1 nova nova 1652 12月 15 22:05 nova-consoleauth.log
-rw-r--r-- 1 nova nova 106423 12月 15 22:03 nova-manage.log
-rw-r--r-- 1 nova nova 638 12月 15 22:05 nova-novncproxy.log
-rw-r--r-- 1 root root 0 12月 15 21:55 nova-placement-api.log
-rw-r--r-- 1 nova nova 2230 12月 15 22:05 nova-scheduler.log
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