Author Archive: Saheetha Shameer

I'm working as a Senior System Administrator. I'm quick learner and have a slight inclination towards following the current and emerging trends in the industry.

My hobbies include hearing music, playing strategy computer games, reading and gardening. I also have a high passion for experimenting with various culinary delights :)

rss feed

Securely Download Files using Https from Nginx Docker Containers

As  system administrators, we have situations where we need to download large files such as backup files, database backups, emails, log files etc securely between our servers. Usually we use SFTP, SSH or SCP for this purposes. But these processes slow down comparatively, when it comes to a remote backup download. In this article, I'm explaining a […]

August 10, 2016 | By in SECURITY
| Reply More

How to Monitor Docker Containers using Grafana on Ubuntu

Grafana is an open source feature rich metrics dashboard. It is very useful for visualizing large-scale measurement data. It provides a powerful and elegant way to create, share, and explore data and dashboards from your disparate metric databases. It supports a wide variety of graphing options for ultimate flexibility. Furthermore, it supports many different storage backends for your […]

August 3, 2016 | By in MONITORING
| Reply More

How to Install Visual Studio Code 1.3 on Ubuntu 16.04

Visual Studio Code is a lightweight, free and open source software. It provides developers with new choice of tooling, one which combines with simplicity and the streamline experiences with the code editor with more features. It is a powerful source code editor which runs on your desktop environment, available for OS like for Windows, OS X and Linux. […]

August 1, 2016 | By
| Reply More

Install and Configure Git on Ubuntu 16.04

Git is an open source, distributed, version control system designed to handle every type of projects from small to big with speed and efficiency. It is easy to learn and has a low memory consumption with lightning speed performance. It surpasses several other SCM tools like Subversion, CVS, Perforce and ClearCase with features like cheap local […]

July 18, 2016 | By
| Reply More

How to Install Go on Ubuntu Linux and CentOS

GO is a general purpose system programming language which means that you can build wide variety of application using it. It is purely an open source language developed by Google. It has cross platform, which supports all major operating systems. Go source code is compared to a binary executable or library, this results in a very […]

July 6, 2016 | By
| Reply More

How to Add Host and Manage Services in Icinga2

In my previous article, I've explained how to install and configure an Icinga2 with Icinga Web2 interface. Now it's time to introduce some hosts to our monitoring system.  Unlike Nagios, we can add the hosts automatically to the Icinga2 systems. The configuration is quite simple and easy compared to other monitoring systems. As stated before,  the […]

July 1, 2016 | By in MONITORING
| 1 Reply More

How to Install Icinga2 on Ubuntu 16.04

ICINGA2 is an open source monitoring system which checks the availability of your network resources, services, notifies users of outages and generates performance data for reporting. It is an advanced form of Nagios and it has a better web interface compared to it. It is developed with a much user-friendly web interface with more options and it is more […]

June 29, 2016 | By in MONITORING
| 5 Replies More

How to Install FFMPEG on CentOS 7

FFMPEG is a major multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play various audio and video files in different formats.  FFMPEG is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and re-size video on […]

June 28, 2016 | By
| 1 Reply More

How to Setup Postfix Mail Server on Ubuntu 16.04 (Dovecot - MySQL)

Generally, all mailservers consist of three main components: MTA, MDA and MUA.  Each components plays a specific role in the process of moving and managing email messages and is important for ensuring proper email delivery.  Hence, setting up a Mail server is a difficult process involving the proper configuration of these components. The best way is to […]

June 22, 2016 | By
| 6 Replies More

How to Run Single-Node Cassandra Cluster in Ubuntu 16.04

Apache Cassandra is a open source distributed, high performance, extremely scalable and fault tolerant post-relational database solution. It can serve as both real-time data store for online/transactional applications, and as read-intensive database for business intelligence systems. Relational DB Vs Cassandra Relational database systems handles moderate incoming data velocity and fetches data from one or few locations. […]

June 15, 2016 | By
| Reply More

How to Run Puppet on Container Infrastructure using Docker

Docker is an Opensource Container based technology. It is giving us a workflow around containers which is much easy to use. Docker separates application from underlying operating system using container technology, similar to how Virtual Machines separate the operating system from underlying hardware. Docker Container Vs Virtual Machines The Virtual Machines includes applications, necessary binaries […]

June 13, 2016 | By
| 1 Reply More

How to Install Jenkins on Ubuntu 16.04

Jenkins is an open source continuous integration tool, which is used for continuous build, continuous deployment and Testing across multiple servers faster.  It is a self-contained web-based program, ready to run out-of-the-box, with packages for Windows, Mac OS X and Linux operating systems.  It is a Web application build in Java. It performs these tasks automatically when […]

June 8, 2016 | By
| Reply More

How to Install RainLoop Webmail on Ubuntu 16.04

RainLoop Webmail is an Open Source Web Application software written in PHP. It is a simple, fast and web-based email client. It provides a fast web interface to access your emails on almost all major mail providers like Yahoo, GMail, Outlook and many others as well as your own mail servers. These are some of the […]

June 6, 2016 | By
| Reply More

How to Install Tomcat 8 on Ubuntu 16.04 (Multiple Instances)

Apache Tomcat commonly called as Tomcat is an open source Webserver and Servlet container developed by Apache Software Foundation. It is written in Java and released under Apache 2.0 License. This is a cross platform application. Tomcat is actually composed of a number of components, including a Tomcat JSP engine and a variety of different […]

May 25, 2016 | By
| Reply More