OpenStackstein安裝（六）novaoncompute

Install and configure components
  1. Install the packages: 
    # yum install openstack-nova-compute

  2. Edit the /etc/nova/nova.conf file and complete the following actions:

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    ○ In the [DEFAULT] section, enable only the compute and metadata APIs:
    [DEFAULT]
    # ...
    enabled_apis = osapi_compute,metadata

○ In the [DEFAULT] section, configure RabbitMQ message queue access:
    [DEFAULT]
    # …
    transport_url=rabbit://openstack:openstack123@dbs.flex.net

○ In the [api] and [keystone_authtoken] sections, configure Identity service access::
    [api]
    # ...
    auth_strategy = keystone

    [keystone_authtoken]
    # ...
    auth_url = http://stack.flex.net:5000/v3
    memcached_servers = dbs.flex.net:11211
    auth_type = password
    project_domain_name = Default
    user_domain_name = Default
    project_name = service
    username = nova
    password = nova123
    注意: 注釋或移除在掉在[keystone_authtoken]區(qū)域中的其它的選項

○ In the [DEFAULT] section, configure the my_ip option:
    [DEFAULT]
    # ...
    my_ip = 192.168.205.187
注意：使用管理接口的IP在你的計算節(jié)點上.

○ In the [DEFAULT] section, enable support for the Networking service:
    [DEFAULT]
    # ...
    use_neutron = true
    firewall_driver = nova.virt.firewall.NoopFirewallDriver
注意：缺省的，計算節(jié)點使用一內部的防火墻驅動，因為網(wǎng)絡服務包含了一個防火墻驅動，你必須禁用防火墻驅動并使用nova.virt.firewall.NoopFirewallDriver firewall driver

○ In the [vnc] section, enable and configure remote console access:
    [vnc]
    # ...
    enabled = true
    server_listen = 0.0.0.0
    server_proxyclient_address = $my_ip
    novncproxy_base_url = http://stack.flex.net:6080/vnc_auto.html

    服務器組件監(jiān)聽所有IP地址，代理組件只監(jiān)聽計算節(jié)點的管理接口IP地址?；綰RL指示可以使用web瀏覽器訪問此計算節(jié)點上實例的遠程控制臺的位置。
注意：如果要訪問遠程控制臺的web瀏覽器駐留在無法解析控制器主機名的主機上，則必須使用控制器節(jié)點的管理接口IP地址替換控制器。

○ In the [glance] section, configure the location of the Image service API:
    [glance]
    # ...
    api_servers = http://stack.flex.net:9292

○ In the [oslo_concurrency] section, configure the lock path:
    [oslo_concurrency]
    # ...
    lock_path = /var/lib/nova/tmp

○ In the [placement] section, configure the Placement API:
    [placement]
    # ...
    region_name = RegionOne
    project_domain_name = Default
    project_name = service
    auth_type = password
    user_domain_name = Default
    auth_url = http://stack.flex.net:5000/v3
    username = placement
    password = placement123
    Finalize installation

  3. Determine whether your compute node supports hardware acceleration for virtual machines:

    $ egrep -c '(vmx|svm)' /proc/cpuinfo

如果這個命令返回1或大于1的值，你的計算節(jié)點支持硬件加速，通常不需要額外的配置，通常如果你的計算節(jié)點使用的是Vmware Workstation虛擬機，你可以充許virtuallze Intel VT-x/EPT or AMD-V/RVI這樣打開虛擬化設置

如果這個命令返回一個0值，你的計算節(jié)點不支持硬件加速，并且你必須配置libvirt使用QEMU取代KVM, 編輯文件/etc/nova/nova.conf文件如下：
[libvirt]
# ...
virt_type = qemu

  4. Start the Compute service including its dependencies and configure them to start automatically when the system boots:

    # systemctl enable libvirtd.service openstack-nova-compute.service
# systemctl start libvirtd.service openstack-nova-compute.service

注意:如果nova-compute服務無法啟動，請檢查/var/log/nova/nova- computer .log。controller:5672上的錯誤消息AMQP服務器不可訪問，這可能表明控制器節(jié)點上的防火墻正在阻止對端口5672的訪問。將防火墻配置為打開控制器節(jié)點上的端口5672并在計算節(jié)點上重新啟動nova-compute服務。
    Add the compute node to the cell database

  5. Source the admin credentials to enable admin-only CLI commands, then confirm there are compute hosts in the database:

    $ . admin-openrc

$ openstack compute service list --service nova-compute
+----+-------+--------------+------+-------+---------+----------------------------+
| ID | Host  | Binary       | Zone | State | Status  | Updated At                 |
+----+-------+--------------+------+-------+---------+----------------------------+
| 1  | node1 | nova-compute | nova | up    | enabled | 2017-04-14T15:30:44.000000 |
+----+-------+--------------+------+-------+---------+----------------------------+

  6. Discover compute hosts:

    # su -s /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova

Found 2 cell mappings.
Skipping cell0 since it does not contain hosts.
Getting compute nodes from cell 'cell1': ad5a5985-a719-4567-98d8-8d148aaae4bc
Found 1 computes in cell: ad5a5985-a719-4567-98d8-8d148aaae4bc
Checking host mapping for compute host 'compute': fe58ddc1-1d65-4f87-9456-bc040dc106b3
Creating host mapping for compute host 'compute': fe58ddc1-1d65-4f87-9456-bc040dc106b3
注意：當你添加新的計算節(jié)點，你必須運行nova-manage cell_v2 discover_hosts在控制器上注冊新的計算節(jié)點，替代方法為你可以在/etc/nova/nova.conf中設置一個適當?shù)拈g間隔自動發(fā)現(xiàn)計算節(jié)點:
[scheduler]
discover_hosts_in_cells_interval = 300
    Verify operation

    Verify operation of the Compute service.
    Note: Perform these commands on the controller node.

  7. Source the admin credentials to gain access to admin-only CLI commands: 
    $ . admin-openrc

  8. List service components to verify successful launch and registration of each process:

    $ openstack compute service list

+----+--------------------+------------+----------+---------+-------+----------------------------+
| Id | Binary             | Host       | Zone     | Status  | State | Updated At                 |
+----+--------------------+------------+----------+---------+-------+----------------------------+
|  1 | nova-scheduler     | controller | internal | enabled | up    | 2016-02-09T23:11:15.000000 |
|  2 | nova-conductor     | controller | internal | enabled | up    | 2016-02-09T23:11:16.000000 |
|  3 | nova-compute       | compute1   | nova     | enabled | up    | 2016-02-09T23:11:20.000000 |
+----+--------------------+------------+----------+---------+-------+----------------------------+

Note: This output should indicate two service components enabled on the controller node and one service component enabled on the compute node.
  9. List API endpoints in the Identity service to verify connectivity with the Identity service: 
    $ openstack catalog list
+-----------+-----------+---------------------------------------------+
| Name      | Type      | Endpoints                                   |
+-----------+-----------+---------------------------------------------+
| placement | placement | RegionOne                                   |
|           |           |   admin: http://stack.flex.net:8778         |
|           |           | RegionOne                                   |
|           |           |   internal: http://stack.flex.net:8778      |
|           |           | RegionOne                                   |
|           |           |   public: http://stack.flex.net:8778        |
|           |           |                                             |
| glance    | image     | RegionOne                                   |
|           |           |   admin: http://stack.flex.net:9292         |
|           |           | RegionOne                                   |
|           |           |   public: http://stack.flex.net:9292        |
|           |           | RegionOne                                   |
|           |           |   internal: http://stack.flex.net:9292      |
|           |           |                                             |
| nova      | compute   | RegionOne                                   |
|           |           |   public: http://stack.flex.net:8774/v2.1   |
|           |           | RegionOne                                   |
|           |           |   internal: http://stack.flex.net:8774/v2.1 |
|           |           | RegionOne                                   |
|           |           |   admin: http://stack.flex.net:8774/v2.1    |
|           |           |                                             |
| keystone  | identity  | RegionOne                                   |
|           |           |   public: http://stack.flex.net:5000/v3/    |
|           |           | RegionOne                                   |
|           |           |   admin: http://stack.flex.net:5000/v3/     |
|           |           | RegionOne                                   |
|           |           |   internal: http://stack.flex.net:5000/v3/  |
|           |           |                                             |
+-----------+-----------+---------------------------------------------+

  10. List images in the Image service to verify connectivity with the Image service:

    $ openstack image list

+--------------------------------------+-------------+-------------+
| ID                                   | Name        | Status      |
+--------------------------------------+-------------+-------------+
| 9a76d9f9-9620-4f2e-8c69-6c5691fae163 | cirros      | active      |
+--------------------------------------+-------------+-------------+

  11. Check the cells and placement API are working successfully and that other necessary prerequisites are in place:

    # nova-status upgrade check

+--------------------------------------------------------------------+
| Upgrade Check Results                                              |
+--------------------------------------------------------------------+
| Check: Cells v2                                                    |
| Result: Success                                                    |
| Details: None                                                      |
+--------------------------------------------------------------------+
| Check: Placement API                                               |
| Result: Success                                                    |
| Details: None                                                      |
+--------------------------------------------------------------------+
| Check: Ironic Flavor Migration                                     |
| Result: Success                                                    |
| Details: None                                                      |
+--------------------------------------------------------------------+
| Check: Request Spec Migration                                      |
| Result: Success                                                    |
| Details: None                                                      |
+--------------------------------------------------------------------+
| Check: Console Auths                                               |
| Result: Success                                                    |
| Details: None                                                      |
+--------------------------------------------------------------------+

文章名稱：OpenStackstein安裝（六）novaoncompute
URL鏈接：http://bm7419.com/article26/gocecg.html

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