Technology Archive

14 Feb 2019

How to rename the network interface in CentOS/RHEL7

I think everyone noticed that in Linux 7 network interface name has been changed from eth[0,1..] to ens. But in some organization they what to use eth as a standard network interface name. In this article we
12 Feb 2019

How to block Denial of Service (DoS) with null route

On a Linux/Unix system you can mitigate the effects of an attack by blocking the communication with the attacking ip addresses. You can either do this by creating IPTables Rules or via a null route also known
8 Feb 2019

List all IP addresses connected to your Server

We have multiple methods to list all the IP addressed, but below is a Unix command to list all the IP addresses connected to your server on port 80. List all the IP Address # netstat -tn
7 Feb 2019

About the chef-repo Directory Structure

A chef is a configuration management system designed to allow you to automate and control large numbers of computers in an automated and reliable manner. The chef works with three core components: The Chef server, workstations, and
17 Jan 2019

How To Install Docker on Ubuntu 18.04 & 16.04 LTS

Docker is a container-based application framework that allows deploying programs that are run as containers. They’re similar to virtual machines, but containers are more portable, more resource-friendly, and more dependent on the host operating system. See Also:
16 Jan 2019

How To Install Docker CE on CentOS/RHEL 7/6

Docker is an application that makes it simple and easy to run application processes in a container, which are like virtual machines, only more portable, more resource-friendly, and more dependent on the host operating system. See Also:
15 Jan 2019

What is Docker & Docker Container ?

What is Docker & Docker Container Docker is an open-source software platform to create, deploy and manage virtualized application containers on a common operating system. Docker enables developers to run any application as a lightweight, which can
4 Sep 2017

How to connect Chef Server with Nodes on Linux

The main part of chef that allows you to connect a node to a chef server is called chef-client. A node is any physical, virtual, or cloud machine that is configured to be maintained by a chef-client.
21 Aug 2017

Install and Configure a Chef Workstation on CentOS/RHEL 7/6

A Chef workstation is a system, which we use to develop recipes and cookbooks and interact with a chef nodes. It helps in configuring organizational policy, including defining roles & environments and ensuring that critical data is
15 Aug 2017

How to Install the Chef Server on CentOS/RHEL 5/6/7

A chef is a Ruby-based configuration management engine. Chef server acts as a single point of contact for agents to pull configurations that are applicable to them. Chef server stores cookbooks, metadata of the nodes, environment and