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Update 20181107 Top 30 OpenStack Interview Questions and Answers.md
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@ -81,7 +81,7 @@ vrouter
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Ans: 假设我们想在 “qdhcp-a51635b1-d023-419a-93b5-39de47755d2d” 网络命名空间中执行 “ifconfig” 命令，我们可以执行如下命令。
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格式 : ip netns exec {network-space} <command>
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命令格式 : ip netns exec {network-space} <command>
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```
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~# ip netns exec qdhcp-a51635b1-d023-419a-93b5-39de47755d2d "ifconfig"
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@ -117,47 +117,47 @@ Ans: 可使用如下命令来显示可用浮动 IP 列表：
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~]# openstack ip floating list | grep None | head -10
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```
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### Q:12 How to provision a virtual machine in specific availability zone and compute Host?
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### Q:12 如何在特定可用区域中或在计算主机上配置虚拟机？
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Ans: Let’s assume we want to provision a VM on the availability zone NonProduction in compute-02, use the beneath command to accomplish this,
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Ans: 假设我们想在 compute-02 中的可用区 NonProduction 上配置虚拟机，可以使用如下命令：
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```
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~]# openstack server create --flavor m1.tiny --image cirros --nic net-id=e0be93b8-728b-4d4d-a272-7d672b2560a6 --security-group NonProd_SG --key-name linuxtec --availability-zone NonProduction:compute-02 nonprod_testvm
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```
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### Q:13 How to get list of VMs which are provisioned on a specific Compute node?
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### Q:13 如何在特定计算节点上获取配置的虚拟机列表？
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Ans: Let’s assume we want to list the vms which are provisioned on compute-0-19, use below
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Ans: 假设我们想要获取在 compute-0-19 中配置的虚拟机列表，可以使用如下命令：
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Syntax: openstack server list –all-projects –long -c Name -c Host | grep -i {Compute-Node-Name}
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命令格式: openstack server list –all-projects –long -c Name -c Host | grep -i {Compute-Node-Name}
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```
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~# openstack server list --all-projects --long -c Name -c Host | grep -i compute-0-19
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```
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### Q:14 How to view the console log of an openstack instance from command line?
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### Q:14 如何使用命令行查看 OpenStack 实例的打印信息？
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Ans: Console logs of an instance can be viewed from the command line using the following commands,
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Ans: 使用如下命令可查看实例的命令行打印信息：
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First get the ID of an instance and then use the below command,
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首先获取实例的 ID，然后使用如下命令：
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```
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~# openstack console log show {Instance-id}
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```
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### Q:15 How to get console URL of an openstack instance?
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### Q:15 如何获取 OpenStack 实例的控制台的 URL 地址？
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Ans: Console URL of an instance can be retrieved from command line using the below openstack command,
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Ans: 可以使用以下 OpenStack 命令从命令行检索实例的控制台 URL 地址：
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```
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~# openstack console url show {Instance-id}
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```
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### Q:16 How to create a bootable cinder / block storage volume from command line?
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### Q:16 如何使用命令行创建可启动的 cinder / block 存储卷？
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Ans: To Create a bootable cinder or block storage volume (assume 8 GB) , refer the below steps:
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Ans: 假设创建一个 8GB 可启动存储卷，可参考如下步骤：
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* Get Image list using below
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* 使用如下命令获取镜像列表
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@ -166,7 +166,7 @@ Ans: To Create a bootable cinder or block storage volume (assume 8 GB) , refer t
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| 89254d46-a54b-4bc8-8e4d-658287c7ee92 | cirros | active |
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```
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* Create bootable volume of size 8 GB using cirros image
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* 使用 cirros 镜像创建 8GB 的可启动存储卷
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@ -174,41 +174,41 @@ Ans: To Create a bootable cinder or block storage volume (assume 8 GB) , refer t
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~# cinder create --image-id 89254d46-a54b-4bc8-8e4d-658287c7ee92 --display-name cirros-bootable-vol 8
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```
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### Q:17 How to list all projects or tenants that has been created in your opentstack?
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### Q:17 如何列出所有在你的 OpenStack 中创建的项目或用户？
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Ans: Projects or tenants list can be retrieved from the command using the below openstack command,
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Ans: 可以使用如下命令来检索所有项目和用户：
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```
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~# openstack project list --long
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```
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### Q:18 How to list the endpoints of openstack services?
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### Q:18 如何显示 OpenStack 服务端点列表？
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Ans: Openstack service endpoints are classified into three categories,
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Ans: OpenStack 服务端点被分为 3 类：
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* Public Endpoint
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* Internal Endpoint
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* Admin Endpoint
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* 公共端点
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* 内部端点
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* 管理端点
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Use below openstack command to view endpoints of each openstack service,
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使用如下 OpenStack 命令来查看各种 OpenStack 服务端点：
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```
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~# openstack catalog list
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```
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To list the endpoint of a specific service like keystone use below,
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可通过以下命令来显示特定服务端点（比如说 keystone）列表：
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```
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~# openstack catalog show keystone
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```
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Read More : [**Step by Step Instance Creation Flow in OpenStack**][2]
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想了解更多请访问 : [**OpenStack 中的实例创建流程**][2]
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### Q:19 In which order we should restart nova services on a controller node?
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### Q:19 在控制节点上你应该按照什么步骤来重启 nova 服务？
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Ans: Following order should be followed to restart the nova services on openstack controller node,
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Ans: 应该按照如下步骤来重启 OpenStack 控制节点的 nova 服务：
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* service nova-api restart
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* service nova-cert restart
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