linux – Page 4 – Blog by Jay Mutkawoa (Nitin)

Puppet already installed ? What Next ? – Part 1

Post Author By Nitin J Mutkawoa
Post Date October 12, 2019
Post Comment 0 comments

3 min read

A few days back, we have seen the installation of the Puppet server and Puppet Agent on the RHEL7 environment. In this article, we will focus on the technical part to administer and write manifests in the Puppet server to [Read More…]

Linux System Networking and Hardware Security

35 commands to understand Firewalld in RHEL7 environment

Post Author By Nitin J Mutkawoa
Post Date October 10, 2019
Post Comment 0 comments

8 min read

Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges, and IP sets. There is a separation of runtime [Read More…]

Linux Application

10 steps to install Puppet configuration management tool

Post Author By Nitin J Mutkawoa
Post Date October 9, 2019
Post Comment 0 comments

3 min read

Some days ago a guy asked me why I do not blog anything on Puppet configuration management tool and prefer Ansible over Puppet. True it is that I prefer Ansible because it is agentless and very easy to use. However, [Read More…]

Networking and Hardware Security

Diving into the basics of IPv6

Post Author By Nitin J Mutkawoa
Post Date April 21, 2019
Post Comment 2 comments

10 min read

The Internet is growing. In case you are not on IPv6, for sure one day, you might need to migrate from IPv4 to IPv6. Now what kind of methodology you would apply whether a dual stack or a direct changeover [Read More…]

Linux Application Linux System

Recover logical volumes data from deleted LVM partition

Post Author By Nitin J Mutkawoa
Post Date April 18, 2019
Post Comment 0 comments

3 min read

Have you ever deleted a logical volume by accident? Can you recover it looking into the backups? Well, the answer is YES. For those who are not familiar with Logical Volume Management (LVM) is a device mapper target that provides [Read More…]

Linux System

Overlay Union Filesystems in Linux

Returning to the world of blogging after nearly a month’s hiatus, I find myself intrigued by the concept of Overlay Filesystems. This article has piqued my curiosity, and I am convinced it will offer valuable insights for my future endeavors. [Read More…]

Posted on February 18, 2024February 18, 2024 by Nitin J Mutkawoa

Uncategorized AKA Non-Tech-Stuffs

My indoor plants in Winter 2024

I used to have a cool indoor greenhouse in my living room growing lettuce, arugula, and thyme. However, since I work from home most of the time and need a dedicated office space, I decided to make some changes. I [Read More…]

Posted on January 19, 2024 by Nitin J Mutkawoa

Cloud Computing

Playing around with SSM, Tags, and Resource Group in AWS

AWS Systems Manager is a service provided by Amazon Web Services (AWS) that helps you automate and manage your infrastructure at scale. It provides a unified user interface so that you can view operational data from multiple AWS services and [Read More…]

Posted on January 18, 2024 by Nitin J Mutkawoa

Blockchain and Fintech

Smart Contracts and Tokens in Ethereum

Smart contracts in Ethereum are self-executing contracts with the terms of the agreement directly written into code. They are computer programs that run on the Ethereum blockchain and automatically enforce the rules and conditions defined within their code. If you [Read More…]

Posted on January 17, 2024January 18, 2024 by Nitin J Mutkawoa

Blockchain and Fintech

Ethereum, Solidity and Decentralization

Ethereum can be considered a technology that is more capable than Bitcoin. In a traditional Blockchain technology like Bitcoin, I mentioned how Bitcoin is mostly focused on a ledger system with records and algorithms backing up the transactions. But Ethereum [Read More…]

Posted on January 16, 2024 by Nitin J Mutkawoa

Blockchain and Fintech

Proof of Stake in Blockchain

In some of my previous articles, I wrote about the Consensus protocol. If you had been following closely, you would have come across the term several times. I explained how Consensus is a mechanism by which participants in a distributed [Read More…]

Posted on January 15, 2024 by Nitin J Mutkawoa