DevOps Hunter Security Automation

Hello, Dear DevOps Automation enthusiast! This post is intended targeted to those who have just started the journey in the Continuous Integration and Continuous Deployment on the Cloud Platforms or On-premises environments. Pre-requisites Latest Stable version of Jenkins installed   Jenkins Master is in  running state  on your machine/VM/Cloud instance Able to login to the Jenkins Console In the left pane, you can click on 'New Item' or Click on the 'Start Using Jenkins' link. The welcome screen shows a link to create a new job! Jenkins First Job Project creation You need to enter the value for  Name for the build project Type of project Freestyle Project Pipeline Multi-configuration Project Folder GitHub Organization Multibranch Pipeline Enter the name of the project, Select the ' Freestyle project ' for the first time and click on the 'OK' button. New page loads with 6 sections/tabs for build project inputs. Job Configuration Sections In ...

Microk8s is the most happening thing in Kubernetes World. Here I would like to share my exploration of microk8s. Earlier there was 'Minikube' which is targets to Developers community to reduce the operations. Assumption You know how to create a VM using Vagrant, VirtualBox that we had discussed in the other blogposts already so here I'm skipping it. Microk8s installation on Ubuntu  To install you should be super user on your Ubuntu VM sudo -i The snap is a package manager available in all Linux distributions. Here in the Ubuntu 18.04 validating is it available. Check snap package tool available snap version Now we all set, run the install the microk8s command here the --classic is must snap install microk8s --classic --edge Check the version microk8s.kubectl version --short Create an alias to simplify your command alias k="microk8s.kubectl" Let's use k now k get nodes k get nodes -o wide # check the namespaces list k get namespaces k get a...

Greetings of the day dear Orchestrator!! In this post, we will discuss exploring the Kubernetes StatefulSet( sts )  What is the purpose of Stateful deployment? Kubernetes' basic unit is Pod, which will be ephemeral in nature and it was designed in such a way that it cannot store the state. To store and maintain the state of the application, Kubernetes introduced a new type of deployment manifestation called it as StatefulSet. Here in this post, we will be experimenting with the most important deployment model that is StatefulSet which will be interconnected with the multiple storage related objects PersistantVolume(PV) and PersistentVolumeClaim (PVC).    Assumptions To work on this experiment you must have Kubernetes cluster running on single node or multi-node and it should have a NFS remote storage access that depends on your platform. Here I've EC2 instance having  NFS service configured and run: Kubernetes Cluster configured and Up Prepare a NFS...

Hello, Dear DevOps enthusiasts, In this post, we are going to explore the emptyDir Volume, which is going to work as local data share between containers in a Pod. I had read the book titled ' Kubernetes in action ', from that book I want to understand Persistance Volumes and Persistence Volume Claims in detail. will run the following example for PV that uses emptyDir volume type. Every new learning is like a game! if you take each trouble as a game level it will be a wonderful game. Once you finish the desired state it's winning the game! why to wait let's jump on this game Kubernetes emptyDir Volume Assumptions Docker installed Kubernetes Installed and configured Cluster AWS access to EC2 instances We need to create a Tomcat container and Logstash container in the Kubernetes pod. In the below diagram, it will share the log file using Kubernetes volume that is empty dir. The tomcat and Logstash cant use the network via loc...

Hello DevOps enthuiast, In this psot we would like to explore the options available on Kubernetes Storage and Volume configurations. Especially in AWS environment if we have provisioned the Kubernetes Cluster then how we can use the storage effectively, need to know all the options. In the sequence of learning on 'Kubernetes Storage' experimenting on the NFS server on AWS EC2 instance creation and using it as Persistent Volume. In the later part, we would use the PVC to claim the required space from the available PV. That in turn used inside the Pod as specifying a Volume.  Assumptions Assuming that you have AWS Console access to create EC2 instances.  Basic awareness of the Docker Container Volumes Understand the need for Persistency requirements Login to your aws console Go to EC2 Dashboard, click on the Launch instance button Step 1: Choose an AMI: "CentOS 7 (x86_64) - with updates HVM" Continue from Marketplace Step 2: Choose instance type: Step 3: Add stora...

In this post, I would like to share the manual steps that work to build a Kubernetes Cluster on Ubuntu 18.04 LTS. We will be using the Docker to install Kubernetes. The three-node cluster that we will be forming in this post will consist of one Master node and two Slave nodes. Therefore, follow the steps described below to install Kubernetes on Ubuntu nodes. Kubernetes Cluster configured on Ubuntu EC2 instances AWS setup for Kubernetes Step 1 :  Install three Ec2 instances in AWS console. The AMI we are choosing here is Ubuntu 18.04 LTS (HVM). Choose AMI In this step, we can choose any instances types with your own perspective. I have taken a general-purpose instance type. Click on "Next:Configure Instance Details". Instance Types  In configuring instance details we can directly create more instances if u give the number in the number of instances section. You can see in the below figure.Click on "Next:Add Storage". Instance d...