在VirtualBox的Ubuntu虚拟机里试图本地安装Kyma（一个基于Kubernetes的开源框架）时，遇到下面的错误信息：

E0827 11:19:38.972489 3093 start.go:174] Error starting host: Error creating host: Error executing step: Running precreate checks.

: This computer doesn’t have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory.

Retrying.

E0827 11:19:38.972667 3093 start.go:180] Error starting host: Error creating host: Error executing step: Running precreate checks.

: This computer doesn’t have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory

E0827 11:19:39.162741 3093 util.go:151] Error uploading error message: : Post https://clouderrorreporting.googleapis.com/v1beta1/projects/k8s-minikube/events:report?key=AIzaSyACUwzG0dEPcl-eOgpDKnyKoUFgHdfoFuA: read tcp 10.0.2.15:59216->172.217.160.74:443: read: connection reset by peer

i042416@ubuntu:~/kyma/kyma/installation$ E0827 11:19:38.972489 3093 start.go:174] Error starting host: Error creating host: Error executing step: Running precreate checks.

: This computer doesn’t have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory.

Retrying.

我使用的虚拟机软件是VirtualBox, 里面已经设置了启用虚拟化技术 VT-x/AMD-V:

根据这个错误信息在Stack Overflow上查询，发现一条线索：

https://superuser.com/questions/1138980/this-computer-doesnt-have-vt-x-amd-v-enabled-enabling-it-in-the-bios-is-mandat

简单得说，VirtualBox不支持在虚拟机里开启另一个嵌套的虚拟机。如果确实需要运行这种嵌套的虚拟化场景，需要尝试VMWare Workstation 11.

费了好大力气从Docker官网下载了Docker Community Editor的安装镜像，Docker.dmg, 总共将近500MB，双击进行安装：

命令行里使用docker version查看版本：

然后使用命令行docker run hello-world，遇到错误信息：Error response from daemon: unauthorized: incorrect username or password:

解决方案

使用命令docker login首先进行登录：

然后hello world的Docker 容器就能正常工作了：

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