In Internet world all services listen and worked on a port. Without specifying a correct port a service might not accessible from outer world. For a Sysadmin/SRE/DevOps it’s always a main task to check and close unused port in an Instance/Server. There are few most important ports everyone is aware…

From very old days Samba is opted as a secure file transfer protocol native to Linux Operating system. In this article I will setup a basic samba server in AWS public Subnet and access the share from a Linux server in the private subnet. First thing first, Let’s create an…

Puppet Enterprise is an old yet powerful Configuration management tool that allows working on various platforms like Unix, Linux and Windows. The main advantage of puppet is it works on a pull-based mechanism and needs an agent to communicate unlike Ansible which is push-based and work on SSH which is…

Before the Cloud computing and SaaS era, all the database are hosted in the instance itself. This cause slowness and outage of the database. If the database service went down it directly impact the business. In this tutorial, we will learn how to migrate database from on-promise i.e. instance to…

Kubernetes bring reliability and stability to our infrastructure and how our applications deployed onto it. But what would happen if the master itself goes down or crashes? The application deployed on the worker node still run as they run previously but we will lose control over them as well as…

In the previous demo, I have created a multi-node Kubernetes setup in AWS. In this example, we will add a Dashboard to monitor the service offered by Kubernetes. Kubernetes Dashboard is a feature provided by Kubernetes ref. GitHubURL: https://github.com/kubernetes/dashboard In this demo, we will explore how to set the dashboard…

In my previous post, I created a production-ready VPC using terraform(Link). In this demo, we will be implementing production-ready servers using terraform. Just a brief summary of what we are going to achieve in this demo, First, we will instruct our Terraform that the below code is to create Infrastructure…

What is VPC? A VPC is a private network within AWS. In Layman term, we can say it’s a private datacenter inside AWS platform. It can be configured as public, private or mixture. It’s region-specific i.e. a single VPC can’t place across regions. We can connect our private data centres…

Terraform is the best Infrastructure As Code tool in the current market. In my previous post I Created a complete web page setup using terraform. The best part of terraform is minimal human interference so no more errors :-p. In this post I will use the previous setup for setting…