4.2. 在 Compute 服务中创建单元

流程

1. 获取 control plane 和单元控制器的 IP 地址：

   $ CTRL_IP=$(openstack server list -f value -c Networks --name overcloud-controller-0 | sed 's/ctlplane=//')
   $ CELL_CTRL_IP=$(openstack server list -f value -c Networks --name cell1-cellcontroller-0 | sed 's/ctlplane=//')

2. 在所有 Controller 节点中添加单元信息。此信息用于从 undercloud 连接到单元端点。以下示例使用前缀 cell1 来只指定单元系统并排除控制器系统：

   (undercloud)$ CELL_INTERNALAPI_INFO=$(ssh heat-admin@${CELL_CTRL_IP} \
    egrep cell1.*\.internalapi /etc/hosts)
   (undercloud)$ ansible -i /usr/bin/tripleo-ansible-inventory \
    Controller -b -m lineinfile -a "dest=/etc/hosts line=\"$CELL_INTERNALAPI_INFO\""

3. 从 transport_url 参数获取控制器单元的消息队列端点，以及来自 database.connection 参数的控制器单元的数据库连接：

   (undercloud)$ CELL_TRANSPORT_URL=$(ssh tripleo-admin@${CELL_CTRL_IP} \
    sudo crudini --get /var/lib/config-data/puppet-generated/nova/etc/nova/nova.conf \
    DEFAULT transport_url)
   (undercloud)$ CELL_MYSQL_VIP=$(ssh tripleo-admin@${CELL_CTRL_IP} \
    sudo crudini --get /var/lib/config-data/puppet-generated/nova/etc/nova/nova.conf \
    database connection | awk -F[@/] '{print $4}')

4. 登录到其中一个全局 Controller 节点并创建单元：

   $ ssh heat-admin@${CTRL_IP} sudo podman \
    exec -i -u root nova_api \
    nova-manage cell_v2 create_cell --name cell1 \
    --database_connection "{scheme}://{username}:{password}@$CELL_MYSQL_VIP/nova?{query}" \
    --transport-url "$CELL_TRANSPORT_URL"

5. 检查单元是否已创建并出现在单元列表中：

   $ ssh heat-admin@${CTRL_IP} sudo podman \
    exec -i -u root nova_api \
    nova-manage cell_v2 list_cells --verbose

6. 重启 Controller 节点上的 Compute 服务：

   $ ansible -i /usr/bin/tripleo-ansible-inventory Controller -b -a \
   "systemctl restart tripleo_nova_api tripleo_nova_conductor tripleo_nova_scheduler"

7. 检查单元控制器服务是否已置备：

   (overcloud)$ openstack compute service list -c Binary -c Host -c Status -c State
   +----------------+-------------------------+---------+-------+
   | Binary         | Host                    | Status  | State |
   +----------------+-------------------------+---------+-------+
   | nova-conductor | controller-0.ostest     | enabled | up    |
   | nova-scheduler | controller-0.ostest     | enabled | up    |
   | nova-conductor | cellcontroller-0.ostest | enabled | up    |
   | nova-compute   | compute-0.ostest        | enabled | up    |
   | nova-compute   | compute-1.ostest        | enabled | up    |
   +----------------+-------------------------+---------+-------+