Oracle Tutorial: Oracle Real Application Clusters and Oracle Clusterware

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Oracle Tutorials: How to configure high availability in oracle?

What is high availability? High availability (HA) refers to the ability of a system or service to remain operational and accessible to users, even in the event…

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What is major difference between RHEL 7, RHEL 8 and RHEL 9?

RHEL 7 and RHEL 9 are both major releases of the Red Hat Enterprise Linux operating system. The major differences between RHEL 7 and RHEL 9 are…

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Packer Tutorials: Packer Install and configurations

Mac Windows https://releases.hashicorp.com/packer/1.8.6/packer_1.8.6_windows_amd64.zip Step 1 – Download and Extract at c:/tools/packer Step 2 – Add “c:/tools/packer” into env PATH variable Ubuntu Centos Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert…

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Packer Tutorials: Hashipcorp Packer workflow

The workflow for using HashiCorp Packer typically involves the following steps: Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus….

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Packer Tutorials: Packer Commands reference with its use cases & Example

HashiCorp Packer is a tool for creating machine images that can be used with various cloud providers, virtualization platforms, or container systems. Here are some of the…

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Packer Tutorials: List of Provisioner in hashicorp packer Post-processors

In HashiCorp Packer, post-processors are used to perform additional actions after the machine image has been created by the builder and provisioners. These actions can include compressing…

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Packer Tutorials: List of Provisioner in Hashicorp Packer?

HashiCorp Packer is a tool for creating machine images that can be used with various cloud providers, virtualization platforms, or container systems. In addition to the builders,…

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Packer Tutorials: List of Builder in Hashicorp Packer?

HashiCorp Packer is a tool for creating machine images that can be used with various cloud providers, virtualization platforms, or container systems. Packer uses a builder to…

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Github Tutorials: How to Generate PAT in Github?

What is Github PAT? GitHub PAT (Personal Access Token) is a type of authentication token that provides a secure way to access GitHub’s API and perform actions…

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AWS Tutorials: 𝐀 Design & S𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐟𝐨𝐫 𝐚𝐜𝐭𝐢𝐯𝐞/𝐩𝐚𝐬𝐬𝐢𝐯𝐞 𝐦𝐮𝐥𝐭𝐢-𝐬𝐢𝐭𝐞 𝐢𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Container Runtime Interface (CRI-O) workflow

Let’s break the workflow : ✅ When a request comes to start a #container, #kubelet calls the CRI that invokes the internal CRI-O daemon in the #kernel✅…

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Git Tutorial: Git Basic Workflow Working with Local Repo

Step 1 – Install git client [ONE TIME] Step 2 – Create git repo [ONE TIME] Step 3 – Decide which files you want to version OR…

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What is Git and How it works? An Overview and Its Use Cases?

What is Git? Git is a free and open-source distributed versions control system use to handle small to very laravel projects code enabling multiple developers to work…

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Types of Databases

To make the best decision for our projects, it is essential to understand the various types of databases available in the market. Popular relational databases include MySQL,…

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API Tutorials: List API architecture styles

Architecture styles define how different components of an application programming interface (API) interact with one another. As a result, they ensure efficiency, reliability, and ease of integration…

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Datadog Tutorials: Events API Emails

Events API emails give you the ability to send events via email. If your application does not have an existing Datadog integration, and you don’t want to…

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Protected: Advance Datadog Tutorial 2023

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Most popular Tools for Software Development and Testing

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Datadog Tutorials: List of all datadog-agent commands with examples

Commands Descriptions datadog-agent check            Run the specified check datadog-agent completion     Generate the autocompletion script for the specified shell datadog-agent config     Print the runtime configuration of a running…

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AWS Tutorials: How to create AWS ec2 Instance?

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Complete Guide for Anomaly Detection in Monitoring & Observability

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Dynatrace Tutorials: OneAgent

What is Dynatrace Oneagent? Dynatrace OneAgent is an intelligent, all-in-one monitoring solution designed for modern, complex IT environments. It is a software agent that can be installed…

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Newrelic Tutorials: Newrelic command to troubleshoot Agent

General Commands New Relic is a tool used for application performance monitoring. To troubleshoot an agent in New Relic, there are several commands you can use depending…

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Introduction of AWS Config & RDK

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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Popular Quora Space for DevOps, DevSecOps, SRE, Cloud & Containers

Spaces is basically a platform that allows group of people to create Web space based on shared interests, allowing people to post/follow/search within these communities or “Spaces”…

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Kapitan Tutorial: How to install Kapitan?

Install Kapitan in Ubuntu Install Kapitan using Docker Container Create Kapitan Project from Scratch If you want to start off with a clean kapitan project, you can run kapitan init…

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Newrelic Tutorials: How to Integrate Apache2 in ubuntu

Config file Confirmation Confrimation Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School,…

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Introduction of Oracle RAC

Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…

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AWS Tutorials: AWS VPC endpoints AKA AWS PrivateLink & AWS VPC endpoint services

AWS VPC endpoints AKA AWS PrivateLink A VPC endpoint enables connections between a virtual private cloud (VPC) and supported services, without requiring that you use an internet…

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