1. Basic Concepts 1.1 Kubernetes Kubernetes (K8s for short), the successor to Google’s Borg, is an open-source system for automatically deploying, scaling, and managing containerized applications. The features it provides: Automated deployment of containers Automated scaling up and down Automated application/service upgrades Grouping containers to serve traffic externally, with load balancing support Health checks for services, with automatic restarts 1.

1. Customizing the docker-machine Location When using Docker on Windows 7, docker-machine is stored by default in the C:\users\your name\.docker\machine\machines directory. To avoid taking up storage space on the system drive, you can change this as follows. If you have not created a virtual machine yet, you can specify the location by setting the MACHINE_STORAGE_PATH environment variable.

While working on servers recently, I ran into a few concepts I wasn’t clear about, so I looked up some references and organized them as follows. 1. The BLP Security Model The model divides the entities in an information system into two parts: Subject: the entity performing the operations, such

1. Introduction Flask was born in 2010 and is a lightweight Web application framework written in Python. Flask depends on two libraries. Jinja2, a template engine similar to mako Werkzeug, a Python library that follows the WSGI protocol and implements much of what sits underneath a Web framework, such as the request and response objects.

To make it easier for CI to integrate UI automation tests, the Robot Framework runtime needs to be packaged as a Docker image. This post covers the configuration and scripts involved in the packaging process. 1. Packaging Directory Structure 1 2 3 4 5 6 tree . ├──