Category: Virtualization

VT-x is not available caused by Docker for Windows


If you are trying to run Virtualbox on Windows, and received the error 'VT-x is not available (VERR_VMX_NO_VMX)'. Normally, the first thing is to check if the processor supports VT-x. If yes, then to see whether it has been enabled in BIOS? If yes, but you are still seeing this error. Then another possible reason … Continue reading VT-x is not available caused by Docker for Windows →

Akamai-Bot


I received good feedbacks since shared the SSSG-Ninja in Akamai community, so I decided to share another useful tool that I ever built before. Akamai-Bot is a Hubot based automation bot that allows users to perform some Akamai daily tasks simply by chatting. Here are some examples. If you are interested, here is the git … Continue reading Akamai-Bot →

Error response from daemon: Get https://index.docker.io/v1/…: x509: certificate signed by unknown authority


Error response from daemon: Get https://index.docker.io/v1/...: x509: certificate signed by unknown authority You have probably seen similar errors as above when trying to access dockerhub registry behind a corp proxy. I have the same issue here. And I think the issue may be caused by two reasons: 1) index.docker.io now is redirected to registry.hub.docker.com 2) Your … Continue reading Error response from daemon: Get https://index.docker.io/v1/…: x509: certificate signed by unknown authority →

Understanding Kubernetes


Continue with my previous post 'Docker Infrastructure V1.1', I want to share some my understanding of how Kubernetes works. Logically, there are 3 basic components in Kubernetes. Pod, Relication-controller and Service: Pod: it is the smallest unit in Kubernetes. It contains one or more containers. Replication-controller: It controls and also guarantees the instance numbers of … Continue reading Understanding Kubernetes →