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Install MERN Stack for JS Based Applications on Ubuntu 20.04 - Step by step guide ?

This article covers how to install the MERN stack on your Ubuntu 20.04 system. In fact, The MERN Stack is made from four components: MongoDB, Express, React, and Node. It provides a bundle of JavaScript technologies used for building dynamic JS websites.

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Install WordPress on Rocky Linux 8 using the LAMP stack - Step by step guide ?

This article covers how to install WordPress on Rocky Linux 8. In fact, WordPress  is open-source, written in PHP and use a MariaDB/MySQL as a database backend. WordPress is the most popular content management system used to host static and dynamic websites on the Internet. You are now ready to create your blog or website.

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Install Harbor Image Registry on Ubuntu 20.04 - Best Method ?

This article covers how to install harbor on Ubuntu. The process is the same for all the other distribution of Linux. Harbor is a component of vSphere with Kubernetes. Harbor provides an enterprise-class registry service. 

Harbor is deployed in a dedicated system namespace on the Supervisor Cluster and is composed of several vSphere Pods. 

Image registries provide a centralized repository for an organization to store container images. 

Public image registries can be used to store container images. However, for security reasons, it is better to use an on-premises image registry. 

You use an on-premises image registry for the following purposes: 

Store container images securely. 

Control access to container images. 

vSphere with Kubernetes is integrated with Harbor and is also compatible with other container image registries. 


Harbor key features includes:

  • Security and vulnerability analysis.
  • Content signing and validation.
  • Extensible API and web UI.
  • Image replication.
  • Role-based access control.
  • Multitenant.


After Harbor installation has succeeded, access Harbor web console on https://registry_domain.

Then Login with:

  • Username: admin
  • Password: Set-in-harbor.yml

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Install s3cmd in Linux and Manage Amazon s3 Buckets

This article covers an overview of the s3cmd command-line tool and how you can use it to manage your Amazon S3 storage feature. S3cmd is an Open Source tool that is free for both commercial and private use, but you need to pay only for Amazon resources. so most of the users are using this tool for managing AWS S3 Buckets. S3cmd is a free command-line tool written in Python


How to use the s3cmd command line to manage the Amazon s3 bucket in Linux ?

To use s3cmd command to list s3 bucket, run the command:

# s3cmd ls

This command will list s3bucket from Amazon S3, If you are unable to get the list of the bucket then there will be the following reasons:

  • There is no bucket created in Amazon s3.
  • As you have used IAM user Access Key and Secret Key while configuring the s3cmd tool, please verify IAM user has required permission to access the s3 bucket.
  • If you are using an IAM role then check whether the s3 bucket policy is attached to the EC2 instance or not.

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Check CentOS Version - Using Different methods ?

This article covers how to get CentOS version using different methods. There are several ways on how to check what version of CentOS is running on your system. The simplest way to check for the CentOS version number is to execute the cat /etc/centos-release command. Identifying the accurate CentOS version may be required to help you or your support team to troubleshoot your CentOS system.


Different commands to check CentOS version:

  • $ rpm -q centos-release - CentOS version valid for CentOS 6 and higher. Causes to reveal major, minor and asynchronous CentOS version.
  • $ lsb_release -d - Requires redhat-lsb package to be installed before execution.
  • $ rpm -E %{rhel} - RPM macro to reveal a major CentOS version.
  • $ rpm --eval %{centos_ver} - RPM macro to display a major version of CentOS.
  • $ cat /etc/centos-release - Linux cat command to output content of the /etc/centos-release .to query CentOS version. Works with CentOS 6 and higher.

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