Cloud and DevOps

Amazon Route53 Resolver The route 53 resolvers are contactable IP addresses (endpoints) where the DNS queries from different sources can be directed. There are two types of resolvers that administrators can deploy. Inbound Resolver As the name says inbound (DNS Resolutions coming in) which will enable your resources in the on-prem network to resolve AWS resource domain names or records in a Route 53 private hosted zone by allowing your on-prem network DNS resolvers to forward queries to Route 53 Resolver. Outbound Resolver As the name says Outbound (DNS Resolutions going out) which will enable your AWS resources to resolve the domain names of your on-prem network resources using resolver rules, which would forward selected queries to the on-prem network DNS resolvers On-prem to AWS DNS Resolution for ...

What is SSM Agent AWS Systems Manager Agent is a Amazon software which can be installed on Amazon EC2 Instances. If SSM Agent is Installed in the servers then it will be easy to manage the EC2 Instances through AWS Systems manager.  By default SSM agent is pre installed for below Amazon Machine Images Amazon Linux Amazon Linux 2 Amazon Linux 2 ECS-Optimized Base AMIs macOS 10.14.x (Mojave), 10.15.x (Catalina), and 11.x (Big Sur) SUSE Linux Enterprise Server (SLES) 12 and 15 Ubuntu Server 16.04, 18.04, and 20.04 Windows Server 2008-2012 R2 AMIs published in November 2016 or later Windows Server 2016 and 2019 In this blog, I will walk you through on the ways to Install SSM Agent in the Instances which will not get SSM Agent by default. Steps to Insta...

In this blog, I will walk you through the ways to import pre-existing cloud resources in terraform. Why Import is required? There will be a scenario, where you will have a stringent timeline to setup a cloud Infrastructure and it can lead to situations where infrastructure needs to be created manually due to time pressures, emergency releases or just the fact that the infrastructure exists, and terraform was never used in the first instance. In a worst case scenario, you can lose the terraform.tfstate file. Terraform import will be essential in most of all these scenarios. Let's Import With an understanding of why Import is required, let us begin by importing a simple AWS resource S3. Firstly, we need to setup the Terraform and AWS credentials locally, we will not go into the details of installing and setting AWS credentials in...

Terraform being an Infrastructure as a Code helps us to manage a lot of infrastructure for several platforms in a consistent manner.  In this blog, I will walkthrough on deploying a terraform code using  Github actions Terraform code to create S3 bucket In this blog, I will walkthrough each blocks in terraform to create an S3 bucket in AWS in automated workflow using GitHub Actions. Lets look into the Terraform files. To understand easily, I have created separate tf files for each purpose, but you can still use all in one tf file as per your convenient. You can use any name with tf extension, for better understanding I used following names. versions.tf ...

Use Case We know that EC2 Linux instances are accessible through the private keys by default. However, SSH is allowed but you cannot use SSH password authentication to access Linux instance as it is disabled by default. So, what would happen if you lose the private key of your Linux instance? In this blog, I will walk you through the easiest ways to login when you lost the Key pair What is a key-pair file? Key-pair is a combination of a public and private key. Amazon EC2 uses public-key cryptography to encrypt and decrypt login information. Private key is only the way to get access to the instance, what if you lost the key? Is your servers lost in black hole? Thankfully nothing is lost you still can access your server, let me show you how can you solve this problem. Things that you should know before to proceed to this topic This procedure will requires s...