KinD K8s cluster

KinD is good tool to if we want to run kubernetes in docker. Good for development activities related to kubernetes. 

quick start

sample steps to create multiple clusters

Create 2 clusters with single node: 

$ kind create cluster --image myimages/external/kindest/node:v1.20.7  --name cluster-alpha

$ kind create cluster --image myimages/external/kindest/node:v1.20.7  --name cluster-beta

$ kubectl get no

NAME                                                           STATUS   ROLES                  AGE     VERSION

cluster-beta-control-plane   Ready    control-plane,master   5m27s   v1.20.7

$ kind get clusters

cluster-alpha

cluster-beta

List cluster contexts

$ kubectl config  get-contexts

CURRENT   NAME                                                  CLUSTER                                               AUTHINFO                                              NAMESPACE

          kind-cluster-alpha                 kind-cluster-alpha                    kind-cluster-alpha  

          kind-cluster-beta                   kind-cluster-beta                      kind-cluster-beta

Switch to the desired cluster context

$ kubectl config  use-context kind-cluster-alpha

Switched to context "kind-cluster-alpha".

$ kubectl get no

NAME                                             STATUS   ROLES                  AGE    VERSION

cluster-alpha-control-plane   Ready    control-plane,master   119m   v1.20.7

Gradle

Gradle commands

you could specify a single test with: 

gradle clean test --tests "org.gradle.MyFirstTest.testA"

Or all tests in a class: 

gradle clean test --tests "org.gradle.MyFirstTest" 

Or all tests in a package: 

gradle clean test --tests "org.gradle.*"

Devops tools and useful stacks

Here is a list of tools and stacks that will be useful in DevOps project.

terraform

https://www.terraform.io/ 
Infrastructure defined as text files. Product by HashiCorp.
Terraform is an open-source infrastructure as code software tool created by HashiCorp. It enables users to define and provision a data center infrastructure using a high-level configuration language known as Hashicorp Configuration Language, or optionally JSON.

sonarqube

https://www.sonarqube.org/
Continuous code quality checks tool.

kibana

https://www.elastic.co/products/kibana
A data visualization plugin for Elasticsearch. It provides visualization capabilities on top of the content indexed on an Elasticsearch cluster.

mesos

http://mesos.apache.org
Distributed OS. Uses for orchestrating clusters.

zipkin

https://zipkin.io/
Zipkin is a distributed tracing system

helm

https://helm.sh/
Helm helps you manage Kubernetes applications — Helm Charts helps you define, install, and upgrade even the most complex Kubernetes application.

quarkus

https://quarkus.io/
A Kubernetes Native Java stack tailored for GraalVM & OpenJDK HotSpot.

gradle

https://gradle.org/
Gradle is an open-source build automation system that builds upon the concepts of Apache Ant and Apache Maven and introduces a Groovy-based domain-specific language instead of the XML form used by Apache Maven for declaring the project configuration.

groovy

Apache Groovy is a Java-syntax-compatible object-oriented programming language for the Java platform. It is both a static and dynamic language with features similar to those of Python, Ruby, Perl, and Smalltalk.

jenkins

Jenkins is an free and open source automation server written in Java. Jenkins helps to automate the non-human part of the software development process, with continuous integration and facilitating technical aspects of continuous delivery.

gitlab CI

GitLab CI (Continuous Integration) service is a part of GitLab that build and test the software whenever developer pushes code to application.

prometheus

An open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

ansible 

https://www.ansible.com/

Ansible is the simplest way to automate apps and IT infrastructure. Application Deployment + Configuration Management + Continuous Delivery. Ansible is an open-source software provisioning, configuration management, and application-deployment tool. It runs on many Unix-like systems, and can configure both Unix-like systems as well as Microsoft Windows. It includes its own declarative language to describe system configuration.

kubernetes

Container orchestration tool.

docker

Enterprise container platform. Docker is a set of platform-as-a-service products that use operating-system-level virtualization to deliver software in packages called containers

NiFi

Designed to automate the flow of data between software systems.

docker-compose

Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application's services.

cypress.io

E2E testing framework. Fast, easy and reliable testing for anything that runs in a browser.

salt

https://www.saltstack.com/
Salt is Python-based, open-source software for event-driven IT automation, remote task execution, and configuration management.

vault

https://www.vaultproject.io/
Secure, store and tightly control access to tokens, passwords, certificates, encryption keys for protecting secrets and other sensitive data using a UI, CLI, or HTTP API.

Bazel

https://bazel.build/

In software development, Bazel is a free software tool that allows for the automation of building and testing of software. The company Google uses the build tool Blaze internally and released and open-sourced part of the Blaze tool as Bazel, named as an anagram of Blaze.

Jaegar

open-source, end-to-end distributed tracing

Monitor and troubleshoot transactions in complex distributed systems

Ansible

https://www.ansible.com/

In computing, Ansible is an open-source software provisioning, configuration management, and application-deployment tool. It runs on many Unix-like systems, and can configure both Unix-like systems as well as Microsoft Windows. It includes its own declarative language to describe system configuration.

Helm.sh

https://helm.sh/

Helm helps you manage Kubernetes applications — Helm Charts help you define, install, and upgrade even the most complex Kubernetes application.

Zipkin

https://zipkin.apache.org/

Zipkin is a distributed tracing system. It helps gather timing data needed to troubleshoot latency problems in microservice architectures. It manages both the collection and lookup of this data. Zipkin’s design is based on the Google Dapper paper.

Sonarqube

SonarQube Continous code quality checks tool

https://www.sonarqube.org/

SonarQube is an open-source platform developed by SonarSource for continuous inspection of code quality to perform automatic reviews with static analysis of code to detect bugs, code smells, and security vulnerabilities on 20+ programming languages. 

Conan

Conan : C++ package manager

https://conan.io/

The open source, decentralized and multi-platform package manager to create and share all your native binaries.