First, the compiler needs to compile .java text files into .class bytecode, and then the JVM executes the .class bytecode files. The process is not complicated; this article mainly records some of the related steps during compilation and runtime. 1. A Single Source File Create a text file Hello.java 1

With the Operator approach, Kubernetes functionality can be extended in a friendly way. Operator = CRD + Controller. First you generate the CRD from a yaml definition, then the Controller continuously watches the data in etcd and performs the corresponding actions. There is a lot of tedious and repetitive work involved in developing an Operator.

1. What Problem S2I Solves It is foreseeable that a large number of applications will be deployed as containers in the future. Container platforms care about images and containers, while application development cares about business code, and ultimately the code needs to be deployed as an image. From code to image — that is Source To Image, or S2I.

Compiled from the “Development Tips” series, gathering the common problems and solutions from day-to-day Kubernetes cluster operations. 1. Configuring Multiple Clusters with Kubectl When doing Kubernetes-related development you usually end up managing several clusters. Kubectl provides multi-cluster context management. Kubectl’s configuration usually lives in $HOME/.kube/config or /etc/kubernetes/admin.conf. Log into the machine, look at the cluster configuration, and edit it using the format below.

1. Who Needs SonarQube Code review is an indispensable part of high-quality software development. It helps developers spot bugs in the code in time and improves code quality and maintainability. The dimensions of code review include language conventions, code style, and soundness of design. Checking these things by hand consumes