Docker CRIU Demo tl;dr An automated, annotated, interactive demo of live container migration using Virtualbox, Vagrant and ShutIt. Currently co-authoring a book on Docker: Get 39% off with the code 39miell CRIU? CRIU is a technology designed to allow the checkpointing and restoration of programs in userspace in the Linux kernel. Containerization is a natural … Read more
Currently co-authoring a book on Docker: Get 39% off with the code 39miell tl;dr A four-step worked example of a process for creating a phoenix-deployed service fronted by haproxy, with two swappable backends deployed using Docker containers, enabling continuous delivery with minimal effort. Introduction I’ve long been interested in Phoenix deployment, and Docker as a … Read more
Currently co-authoring a book on Docker: Get 39% off with the code 39miell Overview Before we get going with Kubernetes, it’s a good idea to get a picture of Kubernetes’ high-level architecture. Kubernetes has a master-minion architecture. Master nodes are responsible for receiving orders about what should be run on the cluster and orchestrating its … Read more
Currently co-authoring a book on Docker: Get 39% off with the code 39miell OpenShift Is RedHat’s application Platform as a Service (aPaaS). It builds on Docker and Kubernetes to provide an Enterprise-level service for application provisioning. PaaSes bring a great of benefits with them: centralised resource management, quotas, isolation, OpenShift is a relatively old product … Read more
Currently co-authoring a book on Docker: Get 39% off with the code 39miell Overview ‘Source To Image’ is a means of creating Docker images by depositing source code into a separately-defined Docker image that is responsible for building the image. You may be wondering why such a build method was conceived. The principal reason is … Read more
Currently co-authoring a book on Docker: Get 39% off with the code 39miell Overview ‘Source To Image’ is a means of creating Docker images by depositing source code into a separately-defined Docker image that is responsible for building the image. You may be wondering why such a build method was conceived. The principal reason is … Read more
Currently co-authoring a book on Docker: Get 39% off with the code 39miell TL;DR These commands can tell you what key bindings you have in your bash shell by default. bind -P | grep ‘can be’ stty -a | grep ‘ = ..;’ Background I’d aways wondered what key strokes did what in bash – … Read more
A CoreOS Cluster in Two Minutes With Four Commands [adinserter block=”1″] You may have heard about CoreOS, be wondering what all the fuss is about and want to play with it. If you have a machine with over 3G memory to spare, then you can be delivered a shell on a CoreOS cluster in under … Read more