Docker container: Build images – Dockerfile 1
This tutorial will guide the reader to create a Docker image with apache web server running on a CentOS operating system. If you are new to Dockers, please click here to access the installation and…
DevOps
Docker: Installation and basics
This tutorial is aimed to teach one how to install Docker in CentOS 9 base host, and to perform basic tasks. Quick Notes: You cannot run a Windows based container on a Docker that is…
Kafka : Zookeeper, broker and consoles access for Producer and Consumer (lab)
In this lab, we will work on setting up a Kafka environment, where a Producer and Consumer can communicate. Prerequisite: 2 computers/vm Minimal installtion of CentOS 7 with updated kernel SElinux and firewalld should be permanently disabled…
Kafka: Running multiple instances of Kafka in the same host
In situations where you want run a cluster of brokers, but do not have spare hosts, you may run multiple brokers nodes in the same server host. For this you will require seperate copies of…
Kafka: Basics – terminologies
Kafka is a middle-ware application developed by Apache Foundation, used for building real-time data pipelines and streaming apps, which is scalable and has fault-tolerant capabilities. Posted below are the basic terminologies used by Kafka,…
Python : Basics of File Handling
In this tutorial we will be showing how to work with files stored in the host, such as reading the contents of the file, adding more lines, etc. Listed below are few of the syntax…
Python : Installing Fabric library in CentOS 7
Fabric is a Python library that can be used to execute shell commands remotely over SSH. This is a very helpful module that can be used in Python by System Administrators to execute command in local…
Jenkins : Workshop – CI/CD – Using Git, Maven and Tomcat
In this example we will first use Git CLI to upload source code to GitHub repository. Then we will use Jenkins which will check for any new code uploaded to GitHub repository every 15 minutes,…
Maven: Use Maven to package a “.war” file (Ready to deploy in Tomcat)
Tomcat is an application server that requires the jave (.jsp) and related files to be packaged in to a “.war” file before uploading then to the server. Once the war file is uploaded, the server…
Apache Tomcat : Installation and application deployment basics
Tomcat is a web application server in which you can run Java applications, or in other words used to deploy your Java Servlets and JSPs. In this tutorial we will learn to install Tomcat in…