OpenStack-liberty版Nova服务部署（三）

标签：command   path   virt   restful   interface   table   device   pack   响应   

Nova API：

nova-api组件实现了RESTful API功能，是外部访问Nova的唯一途径。
接收外部的请求并通过Message Queue将请求发送给其他的服务组件，同时也兼容EC2 API，所以也可以用EC2的管理工具对nova进行日常管理。

Nova scheduler：
Nova Scheduler模块在openstack中的作用就是决策虚拟机创建在哪个主机（计算节点）上。
决策一个虚机应该调度到某物理节点，需要分两个步骤：
过滤(Filter)
计算权值(Weight)

Nova Dashboard：
Filter Schedulter首先得到未过滤的主机列表，然后根据过滤属性，选择服务条件的计算节点主机。

经过主机过滤后，需要对主机进行权值计算，根据策略选择相应的某一台主机（对于每一个要创建的虚拟机而言）。

Nova安装：
[root@hostnamelinux-node1 ~]# yum -y install openstack-nova-api openstack-nova-cert openstack-nova-conductor openstack-nova-console openstack-nova-novncproxy openstack-nova-scheduler python-novaclient

配置nova：
[root@hostnamelinux-node1 ~]# vim /etc/nova/nova.conf 
[database]
connection=mysql://nova:nova@192.168.56.11/nova

同步数据库：
[root@hostnamelinux-node1 ~]# su -s /bin/sh -c "nova-manage db sync" nova

[root@hostnamelinux-node1 ~]# mysql -unova -pnova 
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 26
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)]> use nova;
Database changed
MariaDB [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                                |
| fixed_ips                                  |
| floating_ips                               |
| instance_actions                           |
| instance_actions_events                    |
| instance_extra                             |
| instance_faults                            |
| instance_group_member                      |
| instance_group_policy                      |
| instance_groups                            |
| instance_id_mappings                       |
| instance_info_caches                       |
| instance_metadata                          |
| instance_system_metadata                   |
| instance_type_extra_specs                  |
| instance_type_projects                     |
| instance_types                             |
| instances                                  |
| key_pairs                                  |
| migrate_version                            |
| migrations                                 |
| networks                                   |
| pci_devices                                |
| project_user_quotas                        |
| provider_fw_rules                          |
| quota_classes                              |
| quota_usages                               |
| quotas                                     |
| reservations                               |
| s3_images                                  |
| security_group_default_rules               |
| security_group_instance_association        |
| security_group_rules                       |
| security_groups                            |
| services                                   |
| shadow_agent_builds                        |
| shadow_aggregate_hosts                     |
| shadow_aggregate_metadata                  |
| shadow_aggregates                          |
| shadow_block_device_mapping                |
| shadow_bw_usage_cache                      |
| shadow_cells                               |
| shadow_certificates                        |
| shadow_compute_nodes                       |
| shadow_console_pools                       |
| shadow_consoles                            |
| shadow_dns_domains                         |
| shadow_fixed_ips                           |
| shadow_floating_ips                        |
| shadow_instance_actions                    |
| shadow_instance_actions_events             |
| shadow_instance_extra                      |
| shadow_instance_faults                     |
| shadow_instance_group_member               |
| shadow_instance_group_policy               |
| shadow_instance_groups                     |
| shadow_instance_id_mappings                |
| shadow_instance_info_caches                |
| shadow_instance_metadata                   |
| shadow_instance_system_metadata            |
| shadow_instance_type_extra_specs           |
| shadow_instance_type_projects              |
| shadow_instance_types                      |
| shadow_instances                           |
| shadow_key_pairs                           |
| shadow_migrate_version                     |
| shadow_migrations                          |
| shadow_networks                            |
| shadow_pci_devices                         |
| shadow_project_user_quotas                 |
| shadow_provider_fw_rules                   |
| shadow_quota_classes                       |
| shadow_quota_usages                        |
| shadow_quotas                              |
| shadow_reservations                        |
| shadow_s3_images                           |
| shadow_security_group_default_rules        |
| shadow_security_group_instance_association |
| shadow_security_group_rules                |
| shadow_security_groups                     |
| shadow_services                            |
| shadow_snapshot_id_mappings                |
| shadow_snapshots                           |
| shadow_task_log                            |
| shadow_virtual_interfaces                  |
| shadow_volume_id_mappings                  |
| shadow_volume_usage_cache                  |
| snapshot_id_mappings                       |
| snapshots                                  |
| tags                                       |
| task_log                                   |
| virtual_interfaces                         |
| volume_id_mappings                         |
| volume_usage_cache                         |
+--------------------------------------------+
105 rows in set (0.01 sec)

MariaDB [nova]> exit
Bye

[root@hostnamelinux-node1 ~]# vim /etc/nova/nova.conf 
[DEFAULT]
rpc_backend=rabbit
[oslo_messaging_rabbit]
rabbit_host=192.168.56.11
rabbit_port=5672
rabbit_userid=openstack
rabbit_password=openstack

创建nova用户：

[root@hostnamelinux-node1 ~]# openstack user create --domain default --password=nova nova
+-----------+----------------------------------+
| Field     | Value                            |
+-----------+----------------------------------+
| domain_id | default                          |
| enabled   | True                             |
| id        | 8120acc4fbbb4cc3a86b20f5ac6114c9 |
| name      | nova                             |
+-----------+----------------------------------+

将nova加入service项目赋予admin权限；
[root@hostnamelinux-node1 ~]# openstack role add --project service --user nova admin

[root@hostnamelinux-node1 ~]# vim /etc/nova/nova.conf 
[keystone_authtoken]
auth_uri = http://192.168.56.11:5000
auth_url = http://192.168.56.11:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = nova
password = nova
[DEFAULT]
auth_strategy=keystone
network_api_class=nova.network.neutronv2.api.API

network_api_class对应的python方法目录；

[root@hostnamelinux-node1 ~]# vim /usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py
class API(base_api.NetworkAPI):
    pass

[root@hostnamelinux-node1 ~]# vim /etc/nova/nova.conf 
[DEFAULT]
security_group_api=neutron
linuxnet_interface_driver=nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver

linuxnet_interface_driver对应的python方法目录；

[root@hostnamelinux-node1 ~]# vim /usr/lib/python2.7/site-packages/nova/network/linux_net.py
class NeutronLinuxBridgeInterfaceDriver(LinuxNetInterfaceDriver):
    pass

[root@hostnamelinux-node1 ~]# vim /etc/nova/nova.conf 
[DEFAULT]
#firewall_driver=nova.virt.libvirt.firewall.IptablesFirewallDriver
firewall_driver=nova.virt.libvirt.firewall.NoopFirewallDriver
my_ip=192.168.56.11
enabled_apis=osapi_compute,metadata
[vnc]
vncserver_listen=$my_ip
vncserver_proxyclient_address=$my_ip
[glance]
host=$my_ip
[oslo_concurrency]
lock_path=/var/lib/nova/tmp

[root@hostnamelinux-node1 ~]# grep ‘^[a-z]‘ /etc/nova/nova.conf 
my_ip=192.168.56.11
enabled_apis=osapi_compute,metadata
auth_strategy=keystone
network_api_class=nova.network.neutronv2.api.API
linuxnet_interface_driver=nova.network.linux_net.NeutronLinuxBridgeInterfaceDriver
security_group_api=neutron
firewall_driver=nova.virt.libvirt.firewall.NoopFirewallDriver
rpc_backend=rabbit
connection=mysql://nova:nova@192.168.56.11/nova
host=$my_ip
auth_uri = http://192.168.56.11:5000
auth_url = http://192.168.56.11:35357
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = service
username = nova
password = nova
lock_path=/var/lib/nova/tmp
rabbit_host=192.168.56.11
rabbit_port=5672
rabbit_userid=openstack
rabbit_password=openstack
vncserver_listen=$my_ip
vncserver_proxyclient_address=$my_ip

启动nova：

[root@hostnamelinux-node1 ~]# grep ‘^[a-z]‘ /etc/nova/nova.conf -c
25
[root@hostnamelinux-node1 ~]# systemctl enable openstack-nova-api.service openstack-nova-cert.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-cert.service to /usr/lib/systemd/system/openstack-nova-cert.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@hostnamelinux-node1 ~]# systemctl start openstack-nova-api.service openstack-nova-cert.service openstack-nova-consoleauth.service openstack-nova-scheduler.service openstack-nova-conductor.service openstack-nova-novncproxy.service

注册nova：
[root@hostnamelinux-node1 ~]# source admin-openrc.sh

创建nova服务：

[root@hostnamelinux-node1 ~]# openstack service create --name nova --description "OpenStack Compute" compute
+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Compute                |
| enabled     | True                             |
| id          | 887fca219f71485a96461ad96aabc594 |
| name        | nova                             |
| type        | compute                          |
+-------------+----------------------------------+

注册公网：

[root@hostnamelinux-node1 ~]# openstack endpoint create --region RegionOne compute public http://192.168.56.11:8774/v2/%\(tenant_id\)s
+--------------+--------------------------------------------+
| Field        | Value                                      |
+--------------+--------------------------------------------+
| enabled      | True                                       |
| id           | aacb15c952264c478632facc9953f320           |
| interface    | public                                     |
| region       | RegionOne                                  |
| region_id    | RegionOne                                  |
| service_id   | 887fca219f71485a96461ad96aabc594           |
| service_name | nova                                       |
| service_type | compute                                    |
| url          | http://192.168.56.11:8774/v2/%(tenant_id)s |
+--------------+--------------------------------------------+

注册私网：

[root@hostnamelinux-node1 ~]# openstack endpoint create --region RegionOne compute internal http://192.168.56.11:8774/v2/%\(tenant_id\)s
+--------------+--------------------------------------------+
| Field        | Value                                      |
+--------------+--------------------------------------------+
| enabled      | True                                       |
| id           | 0c5bb8ed04ff4e30bff474ab693a8e7b           |
| interface    | internal                                   |
| region       | RegionOne                                  |
| region_id    | RegionOne                                  |
| service_id   | 887fca219f71485a96461ad96aabc594           |
| service_name | nova                                       |
| service_type | compute                                    |
| url          | http://192.168.56.11:8774/v2/%(tenant_id)s |
+--------------+--------------------------------------------+

注册admin：

[root@hostnamelinux-node1 ~]# openstack endpoint create --region RegionOne compute admin http://192.168.56.11:8774/v2/%\(tenant_id\)s
+--------------+--------------------------------------------+
| Field        | Value                                      |
+--------------+--------------------------------------------+
| enabled      | True                                       |
| id           | be2392a0d3a84014b108fda8fe9c08eb           |
| interface    | admin                                      |
| region       | RegionOne                                  |
| region_id    | RegionOne                                  |
| service_id   | 887fca219f71485a96461ad96aabc594           |
| service_name | nova                                       |
| service_type | compute                                    |
| url          | http://192.168.56.11:8774/v2/%(tenant_id)s |
+--------------+--------------------------------------------+

[root@hostnamelinux-node1 ~]# openstack host list
+-------------------------------+-------------+----------+
| Host Name                     | Service     | Zone     |
+-------------------------------+-------------+----------+
| hostnamelinux-node1.smoke.com | scheduler   | internal |
| hostnamelinux-node1.smoke.com | cert        | internal |
| hostnamelinux-node1.smoke.com | consoleauth | internal |
| hostnamelinux-node1.smoke.com | conductor   | internal |
+-------------------------------+-------------+----------+

OpenStack-liberty版Nova服务部署（三）

标签：command   path   virt   restful   interface   table   device   pack   响应   

原文地址：http://blog.51cto.com/smoke520/2294329