Have you ever wanted to automate Docker container deployment on an EC2 instance. That was exactly what I wanted to do last week and instead of doing it the old-fashioned way with SSH and manual scripts, I decided to automate it using Ansible and run it through GitHub Actions (CI/CD). The result? A super clean…
If you’ve been managing your Terraform state in AWS S3, you’ve probably been using DynamoDB to enable state locking. Well, here’s some great news: Terraform 1.10 lets you ditch DynamoDB and handle state locking directly in S3! No extra tables, no extra costs, and no more unnecessary complexity. So, how does it work? Let me…
Imagine a scenario where you might prefer to provision the resources manually in Cloud because it’s quick and easy. Maybe you needed a Cloud resource such as security group in a hurry, or someone on the team just created it without thinking about Terraform. Fast forward a few weeks, and now you’ve ended with a…
In this article, I will guide you with the steps on how to provision an instance (VM) in AWS Cloud by using Terraform code and a CICD pipeline that is GitHub Action. But before proceeding further, let me give you a brief overview of Terraform and GitHub Action. Terraform Terraform is an open-source Infrastructure…
As a Linux System Admin, we have come across such requirement multiple times for Vertical scaling of Linux VMs in VMware infrastructure. Vertical scaling means adding of additional resources like CPU, memory, Storage to server or VM for increasing its capacity to address more load of Application or DB hosted on Linux VM but what…
I am working as a Linux Administrator and supporting customer environment which have SAP BW Application and HANA DB services hosted on SUSE Linux Enterprise Server (SLES) 12 for SAP Application SP3. One day I got a request from my customer SAP application team to tune the OS that is SLES 12 for SAP Application…
Ubuntu 20.04 LTS has released on April 23, 2020 (with code name “Focal Fossa”) by succeeding its Ubuntu 19.10 as a Latest Stable Linux OS. As Ubuntu 20.04 LTS has suffix “LTS” that’s means it has Long Term Support for 5 years from Ubuntu. Ubuntu 20.04 LTS has come with many features some key features…
Transparent Huge Pages (THP) is a feature available in mostly Linux distributions or distro which optimizes large memory of the systems as now days systems (computer systems) are coming with large memory. THP can enhance system performance by mapping memory with large physical pages this can be useful in case system is computing multiple processes,…
Corruption of initramfs can be occur by many ways for example after patching CentOS 7 Linux OS or installing a buggy device driver in server you found CentOS 7 Linux server has become unbootable. You may also encouter below kernel panic error because server initramfs got damaged . CentOS 7 Linux Kernel Panic screen Now…
Linux is known for one of most secure Unix Operating System (OS) in world. But that is not mean it is 100% secure there is say in Information Technology (IT) no technology is a completely secure that is why from a System Administrator to CIO they take measure for securing IT infrastructure on regular basis…
