A detailed, step-by-step guide on setting up a bare-metal Kubernetes Dashboard, accessing the dashboard outside the cluster & then securing the dashboard using RBAC (role-based access control) so that users can access the dashboard & interact with the resources in their authorized namespaces only.

By the end of this article, you will…


Set up an ELK dashboard to view your Apache Kafka messages.

https://www.elastic.co/

What will we do?

In this article, we will learn how to set up the ELK stack to monitor Apache Kafka messages on the Kibana dashboard in real-time.

Please note that I am not covering how to install Apache Kafka or ELK stack. I assume that these are already installed on your machine.

Requirements

This tutorial is based on the below versions.

I am running this entire stack on macOS Catalina. …


Learn how to run a WordPress Blog with MySQL & persistent data on a bare-metal Kubernetes cluster.

Introduction

In this article, I had explained how we can deploy a WordPress Blog with MySQL database on Minikube. Minikube setup is quite simple & straightforward. It also abstracts away a few important things, like PersistentVolumes. That is why I decided to deploy the same thing on my new Kubernetes cluster running on VirtualBox VMs & write an article about it.

This tutorial will explain the process of deploying a WordPress Blog with MySQL database on a bare-metal Kubernetes cluster. …


Thank you so much for your kind words, Jonas. I am glad that you were able to follow it & get everything to work.

I was able to reproduce what you mentioned. Are you using PHP8? I ran this application on a brand new Mac with fresh Apache/PHP8 installation & I faced the same thing. To fix this, I added the below lines to my .htaccess file & I was able to access the endpoints without the PHP extension.

RewriteCond %{REQUEST_FILENAME} !-dRewriteCond %{REQUEST_FILENAME}\.php -fRewriteRule ^(.*)$ $1.php

Quickly set up a Kubernetes cluster on CentOS 7 servers from scratch using Ansible.

Kubernetes logo.

Introduction

In one of my articles, I had explained how to set up a Kubernetes cluster on CentOS 7 servers with Docker as the container runtime. I focused on explaining the various steps that are required for successfully bringing the cluster up. However, what good a DevOps Engineer is if she/he can’t automate the boring tasks?

With that in my mind, I decided to write an Ansible playbook that does the magic & starts my cluster in a 100% automated manner.

This is a single playbook with…


Learn how Ingress & Ingress Controllers are used in Kubernetes to access the applications running inside the pods in a cluster.

Introduction

In my previous article, I explained how we can set up a Kubernetes cluster on CentOS 7 servers. And taking advantage of this cluster, I’ll demonstrate how to use Ingress & Ingress Controller in this article.

I won’t focus much on what Ingress & Ingress Controller is. I will focus on how Ingress & Ingress Controller can be used to access the various applications that run inside the pods.

As you follow the steps in this article, you will…


A detailed, step-by-step tutorial on setting up a fully functional 2-node Kubernetes cluster on CentOS 7 servers with one master & one worker node using Docker as the container runtime.

https://www.logo.wine/logo/Kubernetes

Introduction

In this tutorial, I will explain how to build a Kubernetes cluster on CentOS 7 servers with one master & one worker node and then deploy an application on this cluster to see it in action. These steps apply to any type of server — virtual machines, physical machines or any cloud instance.

Follow these steps carefully & you should have a cluster ready without much trouble.

Below is what…


https://www.docker.com/sites/default/files/d8/2019-07/Moby-logo.png

This post explains how we can set up a secure Nexus instance running on HTTPS, create a Docker registry on Nexus & then configure Docker on macOS to trust this registry.

Introduction

Oftentimes, we need to use a private Docker Registry on our Mac for local testing. Sonatype Nexus lets you create a repository that can be used as a private Docker Registry. The most important benefit of using a locally running Docker Registry is that we don’t have to worry about pulling/pushing images to Docker Hub. A locally running Nexus Docker Registry is both extremely fast & convenient.

This post…


This small Python script, in just 10 lines (including comments), notifies me of the Wi-Fi my Mac is connected to by displaying a notification.

There are times when you have more than 1 Wi-Fi router and they differ in their speed/tariff or data-limit. Sometimes you want to connect to a router that has a cheaper or unlimited data plan. Sometimes you want to minimize your usage of a specific router because it has a data cap & also incurs a lot of money if that cap is crossed. Sometimes you want to connect to a different router because you need…


This simple pipeline script (Jenkinsfile) fetches the artifact from Sonatype Nexus repository & uploads that to the AWS S3 bucket securely.

Jenkins logo taken from https://jenkins.io/

Introduction.

A few months ago, I was asked to set up a Jenkins pipeline that retrieves the artifact, a zip file containing the JavaScript web application code, from a Nexus repository and then upload that zip file to an AWS S3 bucket. We were using AWS Lambdas & the web application was meant to be served from the S3 bucket.

This post explains how we can quickly set up this pipeline.

Requirements.

Shashank Srivastava

DevOps Architect, Music/Book/Photography/Fitness lover & Blogger

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