DevOps is known as Development Operations which has a large extent of applicability in Automation, Continuous Integration and Continuous Deployment. I will cover the most popular tools like Ansible, Puppet, Helm Charts, Salt, Docker, Kubernetes, Terraform, Git etc under this Category.
In this article, we will look into how to setup and use Atlantis for Terraform Pull Request Automation in Linux. According to Official website, Atlantis is an advanced application for automating Terraform via pull requests. It is deployed as a standalone application into your infrastructure. It is so secure that no third-party will be able ... Read more
In this article, I will take you through step by step guide to create and use a Kubernetes persistent volume. Volumes are required mostly by Stateful applications which generates data that needs to be stored somewhere. In this tutorial we will focus on PV and PVC creation and see how a Pod can use PV ... Read more
In this article, we will see how to deal with the error "unable to drain node" in case you are getting it while trying to drain out the Cluster node for maintenance. Maintenance is a periodic activity which every organization regularly perform to keep the Cluster healthy, secure and up to date. In the last ... Read more
![How to Backup and Restore Kubernetes ETCD database [Step by Step] 13](https://www.cyberithub.com/wp-content/uploads/2022/01/bacres.jpg)
In this article, I will take you through the steps to backup and restore Kubernetes ETCD database but before that let's try to understand what is etcd and why it is important to backup etcd database. According to official documentation, etcd is a strongly consistent, distributed key-value store that provides a reliable way to store ... Read more
In this article, we will understand how to take a Kubernetes Cluster node out for Maintenance. Performing node maintenance is a standard task which needs to be done periodically. Sometimes taking the node out from a Cluster and joining it back to the Cluster can become tricky and cumbersome. Fortunately it is very easy to ... Read more
![How to Deploy Metrics Server on a Kubernetes Cluster [Step by Step] 15](https://www.cyberithub.com/wp-content/uploads/2021/12/deplom.jpg)
In this article I will take you through a step by step guide to deploy metrics server. According to Github, Metrics Server is a scalable, efficient source of container resource metrics for Kubernetes built-in autoscaling pipelines. Metrics Server collects resource metrics from Kubelets and exposes them in Kubernetes apiserver through Metrics API for use by ... Read more
In this article, we will look into how to connect Replicaset to a Pod in a Kubernetes Cluster but before that it is important to understand the purpose of Replicaset in Kubernetes. According to Kubernetes official documentation, A ReplicaSet's purpose is to maintain a stable set of replica Pods running at any given time. As ... Read more
Docker is one of the most useful and powerful tools for administrators and developers to tackle complicated application development projects consisting of applications with many microservices. It gives the ability to develop, test, and deploy software products continuously. This post will look at some of the best practices that developers and administrators can use when ... Read more
In this article, we will see the difference between Docker CMD and ENTRYPOINT with the help of examples. According to Docker official documentation, both CMD and ENTRYPOINT instructions define what command gets executed when running a container. But often it becomes very confusing for lot of people to understand the difference and usage of both ... Read more
In this article, I will explain you how to quickly deploy Kubernetes Cluster using vagrant in 7 Simple Steps. As you might be aware that deploying a full fledge Kubernetes Cluster requires a lot of pre work to be done before you actually make it work. This gets even more problematic when you have to ... Read more