Zeros Blog

A Tech Blog by Zeromsi

Kubernetes Operator; What, Why and How?

For stateless application normal kubernetes deployment is more than enough. But What about stateful applications like databases where we may need to add some business logic to restore them from where they were unavailable. Cluster scaling, disaster recovery type jobs need human intervention as normal kubernetes deployment can't handle this. Operator is the perfect tool to automate these kind of jobs.

Posted by Zeromsi on Tuesday, January 14, 2020

A conceptual start to containerization

Containerization is the next level of primitive virtualization. In virtualization, we used to create virtual instance of computers where every instance will have it’s very own operating system, necessary libraries and other processes(programs), access to certain amount of memory, disk, CPU of host machine.

Posted by Zeromsi on Friday, April 5, 2019

N-Queens with backtracking

The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.

Posted by Zeromsi on Thursday, October 3, 2019

Iptable Basics

Iptables firewall is used to manage packet filtering and NAT rules. IPTables comes with all Linux distributions. Understanding how to setup and configure iptables will help you manage your Linux firewall effectively.

Posted by Zeromsi on Saturday, June 26, 2021

Network address and broadcast address

You cannot use first and last address of a network as host address. Network Address is the first address of a network. For example, if 10.0.0.0/8 is a network, 10.0.0.1 is network address.

Posted by Zeromsi on Saturday, June 26, 2021