Tag: DevOps

Bind and DNS tools Linux Application Scripts and codes

Analyzing Nginx Logs with Python: Reverse DNS Lookup, IP Enumeration, and Counting

Estimated read time 4 min read

While experimenting with parsing my Nginx access logs in Python a while ago, it occurred to me that this could serve as the basis for another blog post. My goal was to identify the most frequently occurring IP address and [Read More…]

Linux Application

Running Jenkins on Docker Container

Estimated read time 2 min read

Time is very precious. Back in the year 2016, I have published an article on installing Tomcat and Jenkins. During those days, I was not familiar with Docker containers. However, with Docker, everything is now quickly deployed, destroyed and re-recreated [Read More…]

Linux Application Scripts and codes

Deploy AWS EC2 instances using Ansible

Estimated read time 3 min read

We have seen in the past how to use Terraform to deploy AWS EC2 instance. But, this is also possible using Ansible. In this blog post, we will focus on the deployment of AWS EC2 instance using Ansible. I assume [Read More…]

Linux Application

Puppet already installed ? What Next ? – Part 1

Estimated read time 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

firewalld
Photo credits: cloudflare.com
Estimated read time 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…]